Military reference books and manuals (2009-2023, Volume 5)

Procedure for Authorization

Page 18 of 21

APPENDIX E: ELECTRICAL ASSESSMENT CHECKLIST

Areas of Assessment

AIP

AEP

SAEP

REP

Comments

Electrical Isolation Standard

Electrical Safety Guidance

Safe Systems of Work (ICC, PTW, TRA)

Appropriate Site Knowledge

Interpretation of drawings

Comp‟Ex EX Certificate (for hydrocarbon sites)

Isolation of LV supplies up to 50V

LV electrical testing up to 50V

LV fault finding up to 50V

First Aid Certificate covering CPR and electric shock

treatment

Electrical protection

Switching programs

Distribution switching

Isolation of LV supplies

LV electrical testing

LV fault finding

HV switching

Isolation of HV supplies

HV electrical testing

HV fault finding

Specific equipment training for competent isolators

* These areas will be site dependant given the maximum voltage level of the site

The assessment process will consist of both a written and practical assessment elements.

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Procedure for Authorization

Page 19 of 21

APPENDIX F: PROCEDURE SUMMARY

¾ Responsible Electrical Person

( highest level of

The assessment process will consist of both a written and

authorisation for electrical systems, approves switching

practical assessment elements. (see table)

programs, countersigns permits for electrical content,

AUTHORIZATION

assesses and recommend facility personnel for

Areas of Assessment

AIP

AEP

SAEP

authorisation to AEP, AIP and CI)

Electrical Isolation

Key Functions

NOTE: Authorised functions are only assigned to personnel

Standard

Key functions are those positions that must be fulfilled in order

who have completed the necessary training and have been

Electrical Safety

to ensure that the proper controls are in place to provide the

properly authorised.

Guidance

safe execution of specific activities.

Safe Systems of Work

Authorisation Process

(ICC, PTW, TRA)

These functions include:

No person shall be authorised under this procedure until they

Appropriate Site

¾ Site Managers / Site Controllers / Offshore Installation

have completed the required training and a competency

Knowledge

Managers (are responsible for the safety of all personnel

evaluation conducted, as identified in Table 1.

Interpretation of

at the site / installation and for the safe execution of all

drawings

Letter of Authorisation and Statement of Competency

work carried out, with specific regard to this procedure)

Comp‟Ex EX Certificate

¾ Area Authority (safety of personnel and safe execution of

(for hydrocarbon sites)

Authorization is recognised by a letter to the individual, clearly

work, operation of the PTW and supporting procedures)

stating the level and duration of authorisation. If required, the

Isolation of LV supplies

¾ Performing Authority (senior person in charge of the

competency assessor shall supply a written statement of

up to 50V

work)

competency to the authoriser.

LV electrical testing up

¾ Authorized Gas Tester Level 1 (can test for flammable

to 50V

gas or vapour, toxic gas and oxygen, confined space entry)

Authorisation Validity

LV fault finding up to

¾ Authorized Gas Tester Level 2 (can test for flammable

50V

Authorisation shall be valid for the maximum duration stated

gas or vapour)

First Aid Certificate

in Table

1, which corresponds with the refresher training

¾ Authorised gas Tester Level 3 (interpretation of results

covering CPR and

requirements associated with the duties.

from both portable and personal gas monitors)

electric shock

¾ Authorised leak Tester (test for presence of leaks)

NOTE: Authorisation shall cease if the person moves to a

treatment

¾ Isolating Authority-Process (perform process/mechanical

new post, even if the new post is on the same site

Electrical protection

isolations)

installation.

Switching programs

¾ Isolating Authority-Electrical (perform controls / electrical

/ telecom isolations)

Authorisation Register

Distribution switching

¾ Senior Authorised Electrical Person (to switch, isolate

Isolation of LV supplies

The Site Manager / Site Controller / Offshore Installation

and test electrical equipment with voltage levels up to and

Manager shall maintain a register of all personnel authorised

LV electrical testing

greater than 1000v)

at their site

/ installation. The register will be stored on

¾ Authorised Electrical Person (to switch, isolate and test

LV fault finding

Documentum and accessed via the AzSPU web site. This

electrical equipment with voltage levels less than 1000v)

HV switching

¾ Authorised Instrument Person (assessed competent to

from where permits are normally issued.

Isolation of HV supplies

switch, isolate and test control, instrument and telecom

HV electrical testing

equipment with voltage levels less than 50v)

Records

¾ Competent Isolator

(assessed competent for specific

HV fault finding

items of equipment providing they have completed formal

The site / installation will retain the assessment record sheets

Specific equipment

training and assessed competent)

and its attachments. The assessor will issue Competence

training for competent

¾ Firewatcher

(competent in the use of fire fighting

Certificates to the candidate and the Site Manager, Site

isolators

equipment)

Controller, Offshore Installation Manager as appropriate and

¾ PTW Coordinator (person authorised to act as PTW

a copy issued to the successful candidate. The site

Coordinator)

installation will retain the original certificate.

¾ Radiological Protection Supervisor

(authorised to

Electrical Assessment Areas

supervise the handling of radioactive sources and test for

These areas will be site / installation dependant given the

radiation levels)

maximum voltage level of the site / installation.

Control Tier:

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Procedure for Authorization

Page 21 of 21

Revision/Review Log

Revision Date

Authority

Custodian

Revision Details

21 October 2005

Alan McNulty

Esmira Akhundova

Initial Issue

12 March 2008

Alan McNulty

Abbas Islamov

Tabe of Contents changed as follows:

(AzSPU CH&S

(Central Safety TL)

8 new points are added to Section 1: Legislation

Manager)

& Standards, Company Requirements, Stopping

Unsafe Work, Deviations, Document Review,

SSOW specific cross references, Language

facilitation, Procedure Summary.

Added new section No.2 - Definitions.

Section 3 is now Functions and Responsibilities;

New point is included in it - Authorized Gas

Tester 3.

Section 4 is now Training and Competency

Requirements.

Section 5 is now Authorization Process.

Added 2 new appendices: F - Procedure

Summary, G - Feedback & Improvement

Suggestions

25 April 2008

Alan McNulty

Abbas Islamov

The Section 4 Training and Competency

(AzSPU CH&S

(Central Safety TL)

Requirements - is considerably reviewed and

Manager)

changed.

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Procedure for Confined Space Entry

Page 2 of 37

TABLE OF CONTENTS

INTRODUCTION

1.1 PURPOSE

1.2 SCOPE

1.3 LEGISLATION & STANDARDS

1.4 COMPANY REQUIREMENTS

1.5 STOPPING UNSAFE WORK

1.6 DEVIATIONS

1.7 SSOW SPECIFIC CROSS REFERENCES

1.8 CONFINED SPACE ENTRY GOLDEN RULES OF SAFETY

1.9 LANGUAGE FACILITATION

1.10 PROCEDURE SUMMARY

DEFINITIONS

2.1 DEFINITIONS

2.2 ABBREVIATIONS

RESPONSIBILITIES

3.1 SITE MANAGER (SM)/SITE CONTROLLER (SC)/OFFSHORE INSTALLATION MANAGER (OIM) 8

3.2 AREA AUTHORITY (AA)

3.3 PERFORMING AUTHORITY (PA)

3.4 AUTHORISED GAS TESTERS (AGT)

3.5 AUTHORISED ENTRANTS

3.6 CONFINED SPACE ATTENDANT

DEFINITION OF A CONFINED SPACE

4.1 EXAMPLES OF CONFINED SPACES

4.2 EXCAVATIONS AND TRENCHES DEEPER THAN 1.2M

HAZARDS ASSOCIATED WITH CONFINED SPACES

CONFINED SPACE PERSONAL PROTECTIVE EQUIPMENT (PPE)

6.1 PERSONAL PROTECTION

6.2 RESPIRATORY PROTECTION

6.3 BREATHING AIR STANDARDS

6.4 AIR LINE MASKS

6.5 USING PORTABLE AIR COMPRESSORS

6.6 SELF CONTAINED COMPRESSED AIR BREATHING APPARATUS (SCCABA)

6.7 ESCAPE BREATHING APPARATUS

AUDITING AND MONITORING

COMPETENCY, TRAINING AND AWARENESS

8.1 TRAINING

8.2 REGISTERS

PLANNING AND PROCEDURES

9.1 PLANNING PROCESS

9.2 HAZARD IDENTIFICATION AND LEVEL 2 RISK ASSESSMENT (L2RA)

9.3 GAS TESTING

9.4 GAS TEST REQUIREMENTS

9.5 TEST EQUIPMENT

9.6 CRITERIA FOR CONFINED SPACE ENTRY

9.7 ENTRY PERMIT ISSUE AND VALIDITY

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Procedure for Confined Space Entry

Page 4 of 37

1 INTRODUCTION

1.1

PURPOSE

The purpose of this procedure is to:

 Identify and define confined spaces

 Describe the proper procedures and preparations to protect the health and safety

of all personnel who must work in confined spaces

1.2

SCOPE

The contents of this procedure are applicable to all BP owned and managed sites /

installations in Azerbaijan and Georgia. Contractors working on BP owned or managed

sites / installations are also responsible for alignment with this procedure.

This document does not replace the procedures prepared and adopted by specialist

contractors. Neither does it supersede any national and local regulatory requirements.

This procedure contributes to compliance with the

“HSE expectations” contained in

“getting HSE right”, the „Golden Rules of Safety‟ and the Control of Work (CoW) standard

that the Hazards associated with BP activities are identified and that the risks are

assessed and managed.

All guidelines contained shall be regarded as the minimum requirements for BP owned or

managed sites / installations in Azerbaijan and Georgia.

The scope covers defined activities of BP and Contractors at all BP AzSPU sites and

installations.

1.3

LEGISLATION & STANDARDS

The aim of this Safe System of Work is to achieve” “no accidents”, “no harm to people”

and “no damage to the environment”. To achieve this aim, this SSOW complies with

National Legislation, the terms of the Production Sharing Agreement

(PSA) and

mandatory BP Standards.

The best International Oil Industry practice and relevant goal setting legislation have been

adopted to reduce the level of risk to as low as reasonably practicable and therefore well

below that mandated by applicable statutory laws and regulations.

In the absence of local regulations, BP Group Standards will apply. In addition,

appropriate UK and US regulations and industry best practice have been considered in

setting suitable goals and targets.

1.4

COMPANY REQUIREMENTS

It is a company requirement that all tasks are subjected to an assessment of risk to

demonstrate that risks have been reduced to as low a level as reasonably practicable

(ALARP). This can be achieved by complying with the Company‟s existing standards.

Where compliance with Company standards cannot reasonably be achieved, a formal

level

2 Risk Assessment will be undertaken to identify any additional controls and

demonstrate that risks remain as low as reasonably practicable. Whether by compliance

with Company Standards or through level 2 Risk Assessment, the Company‟s Golden

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Procedure for Confined Space Entry

Page 5 of 37

Rules of Safety must be complied with. Golden Rules are non-negotiable.

1.5

STOPPING UNSAFE WORK

To stop the continuation of potentially unsafe work at the earliest possible stage the

Control of Work (CoW) Policy and this Confined Space Entry procedure make it very clear

that all personnel are obliged and have the authority to

“STOP” the work that they

consider to be unsafe.

1.6

DEVIATIONS

This procedure is written in sufficient detail that they should be able to be applied

consistently at all sites / installations. There may still be the requirement for some local

rules covering site / installation specific logistical / administrative arrangements and local

variations in responsibilities to reflect differences in organisational arrangements. These

local rules should not deviate from the core processes within this document. Any form of

deviation from this procedure, including but not limited to local rules, shall be requested

and authorised in accordance with the SSOW Deviations from Regulations and

Procedures (Doc. No: AZSPU-HSSE-DOC-00011-2)

1.7

SSOW SPECIFIC CROSS REFERENCES

This procedure shall, where appropriate, be used in conjunction with this suite of AzSPU

Procedures referenced below.

Document Number

Title of Procedure

AZSPU-HSSE-DOC-00011-2

Deviations from Regulations and Procedures

AZSPU-HSSE-DOC-00054-2

Incident Investigation and Reporting

AZSPU-HSSE-DOC-00060-2

Permit To Work

AZSPU-HSSE-DOC-00012-2

Authorization

AZSPU-HSSE-DOC-00063-2

Task Risk Assessment

AZSPU-HSSE-DOC-00048-2

Energy Isolations-Electrical

AZSPU-HSSE-DOC-00049-2

Energy Isolations-Process

AZSPU-HSSE-DOC-00055-2

Leak Testing

AZSPU-HSSE-DOC-00002-2

BP Control of Work

1.8

CONFINED SPACE ENTRY GOLDEN RULES OF SAFETY

Entry to Confined Spaces is covered specifically by one of BP‟s 8 Golden Rules, which

states:

Entry into any confined space cannot proceed unless:

 All other options have been ruled out

 A permit has been issued

 All sources of energy hazards affecting the space have been positively isolated or

removed

 Testing of atmospheres is conducted by a competent person and repeated as often

as defined by the risk assessment

 The oxygen, flammable and toxic levels are maintained within acceptable ranges or

special control measures are applied

 Safe means of access, egress and communication are established and maintained

 A competent stand-by person is stationed,

 Unauthorized entry is prevented

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Procedure for Confined Space Entry

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 A means of rescue is available that has been proved effective

“Entry to such spaces must be controlled, and only authorised following a risk

assessment and the establishment of controls over the hazards. The actual detailed

permitting requirements will be based on local rules and national regulatory requirements,

the frequency of entry, and full knowledge of the hazards present”.

1.9

LANGUAGE FACILITATION

Due to the various languages spoken at sites / installations, there is a necessity to assist

all with “an ease of understanding”. Therefore, the development and use of information

tools are available.

1.10

PROCEDURE SUMMARY

A Procedure Summary has been developed in a form of a leaflet, which can be carried by

the Line Supervisors while conducting their day-to-day work tasks. The Leaflet

summarizes the contents of this Confined Space Entry procedure. The Procedure

Summary can also be used as a guideline for Line Supervisors to deliver their daily

toolbox talk. (See Appendix C)

2 DEFINITIONS

2.1

DEFINITIONS

A confined space is any enclosed area that is large enough for a

Confined Space

person to enter or insert their head, has limited or restricted means of

access and exit and Is not designed for normal or continuous

occupation.

Acceptable

Conditions that must exist in a Confined Space to ensure that

Entry

employees can safely enter and perform work.

Conditions

Confined Space

An individual stationed outside the confined space who monitors the

Attendant

authorised entrant(s) and performs attendant‟s duties defined in this

procedure.

Authorised

An employee who is authorised by BP or a competent contractor and

Entrant

trained to enter a confined space.

Authorised Gas

An individual designated by the OIM/SC/SM to undertake gas testing

Tester 1

in confined spaces.

Breathing

A device, which ensures that the wearer has a continuously available

Apparatus (BA

supply of uncontaminated air through a face mask, helmet or

set)

mouthpiece. SCCABA or airline mask

Entry

The action by which a person passes through an opening into a

permit-required confined space. Entry includes ensuing work activities

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Procedure for Confined Space Entry

Page 7 of 37

in that space and is considered to have occurred as soon as any part

of the entrant's body breaks the plane of an opening into the space

Engulfment

The surrounding and effective capture of a person by a liquid or finely

divided

(flowable) solid substance that can be aspirated to cause

death by filling or plugging the respiratory system or that can exert

enough force on the body to cause death by strangulation, constriction

or crushing.

Entry Permit

A document that is provided by BP or contractor to allow and control

entry into an entry permit controlled confined space.

Hazardous

An atmosphere that may expose authorised entrant(s) to the risk of

Atmosphere

death, impairment of ability to self-rescue, injury or acute illness

Ionising

Gamma rays, X-rays or corpuscular radiation, such as alpha and beta,

Radiation

which are capable of producing ions either directly or indirectly.

Naturally

Radioactive material produced in conjunction with oil and gas as

Occurring

deposits within process equipment. Sometimes known as Low

Radioactive

Specific Activity (LSA) scale

Material

(NORM)

Performing

A designated supervisor appointed by area authority to accept the

Authority (Entry

Confined Space Entry Permit and subsequently be in charge of the

Supervisor)

confined space entry work. This person is responsible for ensuring

that all precautionary measures stipulated on the Confined Space

Entry Permit and accompanying documentation are followed

Permit To Work

Describes the task to be undertaken, equipment to be used and the

(PTW)

hazards and control measures to be taken while completing work

inside a Confined Space

Rescue Team

The personnel designated to rescue entrants from confined space.

2.2

ABBREVIATIONS

Area Authority

AGT

Authorised Gas Tester

ALARP

As Low as Reasonably Practicable

AzSPU

Azerbaijan Strategic Performance Unit

Breathing Apparatus

British Standards

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Procedure for Confined Space Entry

Page 8 of 37

COW

Control of Work

CPR

Cardio-Pulmonary Resuscitation

CSE

Confined Space Entry

CoW

Control of Work

H₂S

Hydrogen Sulphide

L2RA

Level 2 Risk Assessment

LEL

Lower Explosive Limit

LTEL

Long Term Exposure Limit

MIG

Metal Inert Gas

MSDS

Material Safety Data Sheets

OIM

Offshore Installation Manager

Performing Authority

PPE

Personal protective Equipment

PSA

Production Sharing Agreement

PTW

Permit to Work

Site Controller

SCCABA

Self Contained Compressed Air Breathing Apparatus

Site Manager

SSOW

Safe System of Work

STEL

Short Term Exposure Limit

TIG

Tungsten Inert Gas

TRA

Task Risk Assessment

3 RESPONSIBILITIES

Note: For all confined space work, the responsibility for safety, during

the

entire

operation, rests with the Performing Authority, Confined Space Attendant, Authorised

Entrants and Rescue Team personnel. These personnel must ensure that adequate steps

have been taken to eliminate or control the hazards present.

3.1 SITE MANAGER (SM)/SITE CONTROLLER (SC)/OFFSHORE INSTALLATION MANAGER (OIM)

The Site Manager / Site Controller / Offshore Installation Manager shall be responsible and

accountable for the application of this procedure in his area of responsibility, He shall

ensure:

 That adequate numbers of Competent responsible persons are appointed to

manage and maintain the requirements of this procedure

 That this procedure is strictly adhered to for all occasions when it is identified that

confined space entry is to take place.

 That formal records of all risk assessments are maintained in accordance with this

procedure

 The arrangements for training of staff and contractors in the use of the procedure

and the keeping of records.

 Ensuring the competence of all authorities involved in Confined Space Entry.

 Approve the outcome of Level 2 Risk Assessments

3.2

AREA AUTHORITY (AA)

The Area Authority shall be responsible for ensuring that the requirements of this

procedure are adhered to for all confined space entry within his area of responsibility. He

shall be responsible for ensuring:

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Procedure for Confined Space Entry

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 That confined space entry has been risk assessed and planned

 That all persons involved in confined space entry are instructed on the requirements

of risk assessment, permit to work conditions, and any risks or hazards associated

with the work activity

 That regular inspection is performed on all confined space entry activities to confirm

that conditions are suitable and sufficient and, that all personnel are in compliance

with this procedure

 That the Performing Authority performs Risk Assessments, and conducts Toolbox

Talks associated with confined space entry requirements.

 That all persons involved in confined space entry have received appropriate training

and certification

 That they lead Level 2 Risk Assessments for Confined Space Entry (CSE) to ensure

personnel are protected from confined space hazards, using a Level

2 Risk

Assessment

 That they authorise entry for the work to begin (provided that the requirements of

this procedure have been met)

 That the CSE certificate is cancelled or suspended when the job is complete or

when unacceptable conditions arise

3.3

PERFORMING AUTHORITY (PA)

The Performing Authority shall ensure;



Compliance with this procedure by all personnel under their supervision when

involved in CSE activities



That a risk assessment has been performed and a toolbox talk conducted



That all personnel are informed of, and understand, the risks associated with the

task they are performing, and any associated works that may affect their work

activity



That the activity is executed in accordance with this procedure



That confined space entry is halted if an unsafe situation occurs.



That good housekeeping practices are implemented at all work areas



That work activities have been reviewed and pertinent information exchanged with

all other affected parties.



That they know and recognise the hazards that have been identified in the Level 2

RA and that all of the control measures that are identified as being essential to

eliminating or mitigating the risks are fully implemented prior to work commencing



That they understands all the conditions on the PTW and cross-referenced

Certificates and signs to confirm his responsibility for complying with all the

conditions on the confined space entry permit



That personnel entering a confined space have all necessary personal protective

equipment



That rescue services are informed about the entry and that they are readily available

in an emergency



That the necessary rescue and resuscitation equipment are readily available



That acceptable safe entry conditions are maintained consistent with the terms of

the Confined Space Entry (CSE) permit



That work is stopped and all personnel exit the confined space if the conditions of

entry, including the scope of work, change

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Procedure for Confined Space Entry

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3.4

AUTHORISED GAS TESTERS (AGT‟S)

An Authorised Gas Tester is a person who has been trained and certified. Training and

certification covers 3 levels, AGT 1, 2 and 3, with Level 1 being the highest level. Only AGT

Level 1 trained personnel have the required level of training to test confined spaces.

Level 1 AGT‟s are competent to carry out gas testing on all activities including Confined

Space Entry (CSE). For confined space work the Level 1 AGT must retest the atmosphere

at the start of each shift, or when the work has been suspended for an extended period

within the shift.

The AGT1 shall:

 Prove the safe atmosphere (i.e. free of toxic and flammable gases) in the confined

space using correctly calibrated gas testing equipment in his charge with an

understanding of the limitations of the equipment

 Prove Oxygen Levels within levels required

 Enter the readings obtained while testing the atmosphere in the Confined Space

onto the Confined Space Entry Permit

 If the atmosphere is within the acceptable limits for entry, sign section 8 of the Work

Permit

 Where the gas concentrations are outside the acceptable limits the AGT1 should

NOT sign the permit, but discuss with the AA and PA measures to further purge the

space

 Observe and record any sludge or scale in the Confined Space and record it on the

Confined Space Permit ensuring that the findings are clear and easy to read

Level 2 AGT‟s are qualified to carry out gas tests in support of all activities “excluding”

Confined Space Entry & carry out continuous monitoring during ongoing work.

Level 3 AGT‟s are individuals, usually the PA, who are approved by the Site Controller as

having undergone practical instruction by a Level 1 or 2 AGT on the use and interpretation

of the results from both portable and personal gas monitors. The AGT3 has no authority to

record gas test results on PTW; their responsibility is only for continuous monitoring.

3.5

AUTHORISED ENTRANTS

The authorised entrants shall:

 Follow established safety standards and practices

 Participate in a Toolbox Talk

 Understand the conditions required by the Confined Space Entry Permit and the

associated Permit to Work

 Know and recognise the hazards that may be faced during entry including signs or

symptoms, and consequences of the exposure

 Inspect, test and make proper use of equipment and protective devices

 Maintain communication with the Confined Space Attendant to enable the

attendant to monitor the entrants‟ status

 Alert the attendant if an unsafe condition exists or when symptoms of exposure

appear

 Come out from the confined space as soon as possible when:

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Procedure for Confined Space Entry

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o Ordered by the attendant

o The entrant recognises the warning signs or symptoms of exposure

o An unsafe condition exists

3.6

CONFINED SPACE ATTENDANT

The Confined Space Attendant has a vital function to perform. Under no circumstance

may the Confined Space Attendant enter the confined space or leave his post

whilst there are personnel inside. The Area Authority must ensure that the Confined

Space Attendant understands his duties and is competent to perform them.

The attendant must be properly trained to carry out his duties and must attend the toolbox

talk before the start of work. He must remain outside the confined space, in a safe

atmosphere and safe physical position, at all times during a confined entry operation and

perform the assigned duties under this procedure. He must also:



Maintain an accurate count of all persons in the space by:

o Using a tally board on which the name, entry and exit times for all personnel

entering or leaving the confined space shall be recorded

o Marking airlines and / or safety lines so that each individual inside the tank is

clearly identified in the event of a problem



Be aware of the hazards that may be faced during entry, including the mode, signs

or symptoms, and consequences of any exposure



Monitor conditions and activities inside and outside the space to determine if it is

safe for entrants



Remain outside the confined space during entry operations until relieved by

another Attendant



Keep entrants under effective surveillance and maintain effective and continuous

communication with them during entry by one or more of the following methods:

o Line-of-sight (not always possible)

o Voice contact (allowing for distance and ambient noise)

o Radio with agreed periodic contact

o Pre-arranged signals on air-klaxons, whistles etc

o Pre-arranged lifeline signals

o Distress signal unit



Order authorised entrants to evacuate the confined space immediately if:

o A condition is observed that is not allowed

o Behavioural effects of hazard exposure are detected

o A situation occurs outside the confined space that could endanger the entrants

o An uncontrolled hazard is detected inside the confined space

o The attendant must leave the work station



Ensure unauthorised persons are not allowed to approach or enter a confined

space while entry is underway



Be equipped with a device (e.g. radio, telephone) to summon assistance rapidly if

Entrants get into trouble.

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Procedure for Confined Space Entry

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Notes:

Rescue and resuscitation equipment shall be near to the worksite and personnel trained

in its use will be readily available and aware of the entry.

Consideration must be given to having the rescue team attend the pre-job briefing to

ensure familiarity with the proposed work.

Ensure that an adequate supply of respirable air is maintained whilst Entrants are inside

the confined space.

4 DEFINITION OF A CONFINED SPACE

A confined space is any enclosed area that is:

 Large enough for a person to enter, or insert their head

and….

 Has limited or restricted means of access and exit

and….

 Is not designed for normal or continuous occupation.

This definition includes any space of an enclosed nature where there is risk of death or

serious injury from hazardous substances or dangerous conditions, e.g. lack of oxygen. A

confined space is a place which is substantially, though not always entirely, enclosed and

where serious injury can occur from hazardous substances or conditions within the space

or nearby.

The hazards that this document addresses arise through the confined nature of the place

of work in combination with one or more of the following:

 The possible presence of flammable and/ or toxic substances

 An oxygen-deficient atmosphere

 An oxygen-enriched atmosphere

 Ingress of solids or liquids

 The presence of excessive heat

4.1

EXAMPLES OF CONFINED SPACES

A Confined Space may be any place included in the following example list, in which by

virtue of its enclosed nature, there arises a reasonable foreseeable specified risk. The list

below is not a complete listing; therefore do not assume if not on the list that it is not a

Confined Space.

Some confined spaces are easy to identify and include:

 Storage tanks

 Silos

 Process vessels and exchangers

 Road and rail tankers

 Enclosed drains and sewers

 Sumps

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Procedure for Confined Space Entry

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Other confined spaces can be less obvious but just as dangerous. Examples include:

 Ductwork

 Void spaces

 Trenches & excavations

 Vessel skirts

 Rooms with limited ventilation

 Temporary tented areas (unless ventilation is specifically designed for worst-case

leakage inside the area).

Note: - A confined space may not necessarily be enclosed on all sides.

For all confined space work, the responsibility for safety, during the entire operation, rests

with the Performing Authority, Confined Space Attendant, Authorised Entrants and

Rescue Team personnel. These personnel must ensure that adequate steps have been

taken to eliminate or control the hazards present.

4.2

EXCAVATIONS AND TRENCHES DEEPER THAN 1.2M

All excavations and trenches deeper than 1.2 metres in “hazardous areas” as defined by

the site / installation are classified as confined spaces.

In “non hazardous areas” where there are no significant hazards identified prior to entry,

the following criteria must be established before determining the requirement for a

“Confined Space Entry permit”:

 No risk of atmospeheric hazards either from surrounding area or from the task

being performed.

 The excavation does not require any form of isolation prior to entry.

 No risk of engulfment from Ingress of solids or liquids.

 No risk from excessive heat.

 Safe means of access and egress for work party

 Safe means of aceess and egress for rescue purposes

 Excavations benched or shored to reduce risk of collapse (See - AZSPU-HSSE-

DOC-00055-2 - Procedure for Excavation.)

 Continuous monitoring of O2, LEL and other toxic gasses are carried out inside

the excavation / trench

The excavation / trench may be classified as “not a confined space” if all the above

criteria can be established and a Level 2 Risk Assessment is conducted.

Note: A Permit to Work and Level 2 Risk Assessment are mandatory for “all work” in

excavations and trenches deeper than 1.2m.

5 HAZARDS ASSOCIATED WITH CONFINED SPACES

Dangerous concentrations of gases and vapours can arise from sources inside or

outside a confined space. These include:

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 Toxic substances in hazardous concentrations, e.g., hydrogen sulphide (H₂S),

benzene and hydrocarbon gases that remains from the process or enters from

adjoining plant because it has not been effectively isolated

 Flammable gases, vapours and liquids with potential for fire or explosion

 Gas or vapour emitted from scale or sludge, particularly resulting from mechanical

disturbance during access or cleaning or due to the heat from welding operations

 Gas, vapour or fumes produced by operations being carried out in the confined

space such as welding and cutting, brush and spray painting and the use of

adhesives and solvents

 Exhaust gases drawn into the confined space from prime movers or heating

equipment

Dangerous situations can arise from sources inside or outside a confined space.

These include:



Failure to positively isolate the confined space



Mechanical equipment in the space



The ingress of steam, hot water or other liquids which may cause scalding or

drowning



Communication difficulties



Poor access and egress restricting movement for normal work and escape



Poor access and egress for rescue



Slippery surfaces



Sources of ionising radiation (e.g. level gauges, sludge and LSA scale or NORM)



Any confined space that might normally contain naturally occurring radioactive

material shall be checked by a certified Radiological Protection Supervisor and

shall be subject to the requirements of procedure AZSPU-HSSE-DOC-00058-2 -

Management of Radioactive Materials and Radiation Generators



Where vessels are fitted with Nucleonic Gauges for measuring levels or product

density, the source must be disarmed or retracted, the source must be made safe

in accordance with procedure AZSPU-HSSE-DOC-00058-2

- Management of

Radioactive Materials and Radiation Generators



Vessel boots and sumps full of liquid which could be fallen into



Pyrophoric scale formed in systems



Systems which may contain H₂S



Excessive noise



Inadequate visibility



Excessive temperature in the confined space (causing heat stress to personnel)



Possible ingress of fumes from drain systems etc



Possible collapse of excavations



Inadequate shoring; appropriate shoring shall be in place prior to entry

Dangerous situations can arise from oxygen enriched or deficient atmospheres

The special dangers of working in oxygen-enriched atmospheres cannot be over

emphasised. Oxygen enrichment may occur by leakage of oxygen supplies or by build-up

of oxygen during oxygen-rich flame cutting processes.

Enrichment of only a few percent will make materials that will normally only burn slowly or

with difficulty, burn fiercely with catastrophic results for the occupants of the confined

space.

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Procedure for Confined Space Entry

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Every precaution shall be taken to avoid oxygen enrichment. In particular:

 Oxygen cylinders shall be kept outside the confined space where practicable.

 Oxygen supplies shall be isolated outside the space during work breaks

 Hoses supplying oxygen shall be removed from the space during work breaks.

 Oxygen shall never be used to 'sweeten' the atmosphere of a confined space.

 The space shall be adequately ventilated at all times

There is also a danger of oxygen deficiency due to combustion processes, purging with

inert gas, inert gas welding (MIG/TIG) or oxidation processes (e.g. rusting) occurring in

steel vessels left completely closed for some time.

Other potential risks include:

 Electric shock or ignition of flammable gases from portable lights, tools, or

associated electrical equipment.

 Possibility of static electricity build-up due to a lack of proper bonding and

grounding procedures.

 Injury from mechanical equipment such as mixers, conveyors, etc., inadvertently

activated.

 Direct contact with corrosives or irritants.

 Contaminants entering from other areas through ducts, piping, etc

 Ignition from static electricity.

 General safety hazards, including communication problems and physical hazards.

For example:

o Falling objects, inadequate visibility, excessive temperature / noise / vibration,

etc

o Possible collapse of excavation

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6 CONFINED SPACE PERSONAL PROTECTIVE EQUIPMENT (PPE)

6.1

PERSONAL PROTECTION

Appropriate personal protection, e.g., head, foot, hand, eye, ear, face, body and

respiratory protection, must be worn when entering an Entry Permit Controlled

Confined Space.

Where required by the Risk Assessment a life-line attached to a full body harness

should be used by all entrants during entry into a confined space.

6.2

RESPIRATORY PROTECTION

Dependent upon the type and concentration of contaminants, respiratory protection

may range from a simple cartridge respirator to air-supplied breathing apparatus.

When the level of airborne contaminants is beyond the filtration capability of a

respirator, as defined by the vendor, or where there is an oxygen deficiency, then

breathing apparatus must be used.

6.3

BREATHING AIR STANDARDS

The need to ensure a continued provision of good quality breathing air relies on

regular changing of air filters and maintenance of dryers, supported by periodical

analysis of the breathing air supply.

Under no circumstances shall Instrument or Plant Air be used for breathing duty

Note: Breathing air shall conform to BS 4275, 1974, "Recommendations for the

Selection, Use and Maintenance of Respiratory Protective Equipment".

6.4

AIR LINE MASKS

Air line breathing apparatus shall be approved and conform to EN 139. The full face

mask enables the wearer to work for long periods in harmful atmospheres, whilst

breathing air is supplied by either portable air compressors fitted with reservoir air

tanks, or a battery of compressed air bottles.

Connections to the air line mask hose are made via instantaneous bayonet spring

couplings. These couplings must be kept in good condition and must not be used for

any purpose other than supplying air to breathing apparatus.

6.5

USING PORTABLE AIR COMPRESSORS

Where no compressed air bottle supply is available, portable air compressors having

a reservoir air tank may be used. In such cases:

 The compressor air intake(s) must be upwind of any known source of

contamination to ensure clear air being fed to the user (a wind sock indicating

wind direction should be flown in the vicinity of the intake to the compressor)

 The system of air supply employed should incorporate a receiver of sufficient

capacity to enable persons to escape from an irrespirable atmosphere in the

event of a failure of the prime mover supplying the air

 The air must be passed through suitable filters to remove excess moisture and

oil mist.

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Procedure for Confined Space Entry

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Note: To ensure that an adequate supply of air is available and being received by

the wearers, a suitably competent person must be appointed who is

responsible for checking the pressure in the air receiver, and for ensuring the

filters are functioning properly.

6.6

SELF CONTAINED COMPRESSED AIR BREATHING APPARATUS (SCCABA)

SCCABA shall conform to EN

137 "Self Contained Compressed Breathing

Apparatus". These sets are provided where a portable supply of air is required for a

short period of time.

The air for this apparatus is supplied under pressure either from compressed air

cylinders carried by the wearer or from trolley sets.

6.7

ESCAPE BREATHING APPARATUS

Any person entering a Confined Space using an airline Breathing Apparatus shall be

provided with an Escape Breathing Apparatus set with a bottle capable of supplying

an emergency air supply for approximately 10 minutes. This set shall also conform to

EN 137 "Self Contained Compressed Breathing Apparatus".

All persons required to use breathing apparatus must receive initial training and

refresher training at intervals not exceeding one year. The training shall be recorded.

7 AUDITING AND MONITORING

Each Business Asset shall undertake internal audits of the operation of Confined

Space Entry. The auditing process including; frequency, checklist, register, actions,

tracking and close out may be included in the audit program of the Permit to Work

System at each site.

These audits must examine the detailed reviews of Confined Space Entry, and check

compliance with this procedure and any deviations in place."

8 COMPETENCY, TRAINING AND AWARENESS

BP and its Contractors must provide adequate training for all personnel likely to be

involved in confined space entry, either as entrants, attendants, rescue team

members or gas testers, to ensure that they possess the understanding, knowledge

and skills necessary to safely perform their assigned duties.

8.1

TRAINING

Training shall include, but not be limited to:

 AGT1 shall be fully trained and certified in gas testing for confined space entry

purposes. Assessed and confirmed competent in accordance with (Doc. No:

AZSPU-HSSE-DOC-00060-2) Permit to Work System

 Confined Space Entry Attendants shall be formally briefed on all aspects of the

proposed entry activities and on their particular duties

 Entrants shall be briefed by the Performing Authority Supervisor or Confined

Space Attendant to ensure that they understand the hazards of the task in

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Procedure for Confined Space Entry

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hand, signs, symptoms and consequences of exposure; and are aware of the

emergency signal to be used by the attendant, if evacuation becomes

necessary.

 The Rescue Team Members shall receive approved PPE and rescue

equipment (including BA sets) and be trained in their use. In addition to rescue

training, each team member must undergo basic first aid and resuscitation

training.

 Employees and Contractors‟ personnel who will be involved in the entry must

also be fully conversant with the scope of work, Emergency Response Plan

and response actions

New personnel shall not be assigned to the above tasks, unless under training and

accompanied by a competent person (maximum 2 new starts to 1 supervisor) who is

familiar with the hazards of confined space entry.

8.2

REGISTERS

A register will be held on site of all personnel deemed competent for all the roles

associated with Confined Space Entry, and will be managed by the Site Manager /

Site Controller / Offshore Installation Manager.

9 PLANNING AND PROCEDURES

All alternatives to entry must be considered before starting to plan for

Confined Space Entry.

Prior to entry into a confined space, the equipment shall be positively isolated,

emptied, cleaned and gas freed as necessary.

A Confined Space Entry Permit form (See Doc. No: AZSPU-HSSE-DOC-00060-2)

shall be completed to allow the Gas Tester (Level 1) to test the atmosphere in the

Confined Space. He will sign the permit after the test to indicate the atmosphere is

safe for the work to be done. The Confined Space Entry Permit is then attached to

the Permit to Work.

Positive isolation (See Doc. No: AZSPU-HSSE-DOC-00049-2), Energy Isolation -

Process must be effected on all live process, utility and service lines and

electrical/control equipment for any task requiring entry to a vessel or confined

space. Spool removal is preferred, although spade isolation may be used where it is

not reasonably practicable to remove pipe work sections. It should be noted that in

some cases it may not be reasonably practicable to comply with this requirement

when making entry to mud tanks, pump pits, ballast tanks, or other utility systems.

Here, a Level 2 Risk Assessment must be undertaken and approval obtained from

the Site Manager, Site Controller or Offshore Installation Manager before entry can

be permitted under work control.

Vessel nozzles should normally be left open to assist with free ventilation. Air movers

or ducted fans may also be used to create a flow of clean air through the vessel. If

there is any likelihood of fumes, water or other contaminant entering the vessel from

sources other than the isolated pipe work while persons are inside, the need to blank

off any affected nozzles must be considered. Blanks used for this purpose do not

need to be pressure-rated. However non-pressure rated blanks must be clearly

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Procedure for Confined Space Entry

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identified by a tag, painted circumference or other marking. In the case of tanks with

'swan necks', mechanical plugs may be an option, to prevent ingress of fumes, etc.

The „man-way‟ doors on a vessel being prepared for entry, must be removed

last, and reinstalled first to reduce the risk of unauthorised entry.

9.1

PLANNING PROCESS

Planning for confined space entry shall include the following:



Confined space hazard identification and Level

2 Risk Assessment

(mandatory)



Positive Isolation to ensure no process or utility fluids or gases may enter

during the entry



Entry Permit preparation to enable Gas Tester to enter the vessel



Gas testing and confined space inspection:



Prior to any entry into a confined space, the atmosphere shall be tested to

determine the precautions necessary, and an Entry Permit issued.



Throughout the period of entry into confined spaces, the atmosphere in the

space must be strictly controlled to prevent persons being exposed to risks

associated with toxic and/or flammable fumes and vapours in the atmosphere,

and with atmospheres that may be deficient (or enriched) in oxygen.



Entry Permit issue and duration of validity



Procedures for control of work including procedures for any non-compliance

with normal standards based on the Level 2 Risk Assessment



The resources available to deal with any potential emergency that may arise

should limit the number of personnel entering a confined space.



An Entry Permit is not a permit to work and for all work in the Confined Space

a relevant Permit to Work shall be issued



Gas tests required for hot work shall be carried out separately (i.e. the tests

done for entry are not valid for the hot work permit).



Emergency response arrangements:

o Access and egress arrangements should take into consideration the

possibility that a casualty may need to be evacuated in an emergency. It

would require a winch to vertically hoist an average person from a space

below. Wearing a harness and lifeline shall only be considered practicable

if the nature of the confined space is such that the attendant could hoist or

drag out the person from the space if the latter were immobilised, and if the

rope would not impede an unassisted exit. Wearing only the harness

should also be considered - a rescuer could attach the lifeline to effect

evacuation of the person

o Procedures for entering confined spaces with and without Breathing

Apparatus (BA) are described in Paragraphs 9.8 and 9.9.

9.2

HAZARD IDENTIFICATION AND LEVEL 2 RISK ASSESSMENT (L2RA)

A Level 2 Risk Assessment shall be prepared to establish whether the proposed

confined space entry and the work to be done can be performed safely.

The main hazards associated with entering and working in confined spaces, are

listed in Section 5.0 as a checklist for the Risk Assessment.

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9.3

GAS TESTING

Only approved persons who have been fully trained and certified in gas testing for

confined space entry purposes, i.e. Authorised Gas Tester Level 1 (AGT1), shall

carry out gas testing for entry,

The AGT1 shall request an Entry Permit from the Area Authority to confirm that the

confined space is isolated and to authorise entry (if required) for the AGT1. Any

special operational conditions inside or outside the space will be conveyed to the

AGT1 on the permit.

Where practicable, the gas test shall be carried out from outside the confined space

(e.g. using extension probes). In some circumstances it may not be possible to

sample a representative portion of the space from the entrance, taking into account

ventilation arrangements and the possibility of heavier than air gas remaining in low

areas. In this event, the AGT1 may have to enter the space in order to complete his

tests.

The conditions for the entry of the AGT1 shall include:

 The AGT1 shall not enter if the conditions at the entrance are outside the

criteria for entry with BA (refer to Table 1).

 A Confined Space Attendant (refer to Paragraph 3.6) shall be stationed at the

entrance so that he is able to see the AGT1 and equipped to raise the alarm if

the AGT1 should get into trouble and also to warn the AGT1 of an external

emergency.

 The AGT1 shall wear BA. He shall only enter the confined space without BA if

he is updating a valid Entry Permit that has already certified the space fit for

entry without BA.

 If practicable, the AGT 1 shall wear a harness and a lifeline. This shall only

be considered practicable if the nature of the confined space is such that the

attendant could hoist or drag out the AGT 1 from the space if the latter were

immobilised, and if the rope would not impede the AGT 1 in making an

unassisted emergency exit

Note: It would require a winch to vertically hoist an average person from a space

below.

Resuscitation equipment ready for immediate use shall be kept close at hand.

9.4

GAS TEST REQUIREMENTS

Testing must be carried out in accordance with the following requirements:

 Ventilation equipment must be shut off before the tests commence.

 The atmosphere must be tested at the bottom, top, and the middle of all

confined spaces.

 The atmosphere inside must be continuously monitored while work is being

conducted in the confined space.

 If the confined space is left for any reason, the atmosphere shall be re-tested

before re-entry may be permitted

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9.5

TEST EQUIPMENT

Testing instruments must be within their calibration dates and operationally checked

before and after use in accordance with manufacturer specifications. Test records

must be held on site.

9.6

CRITERIA FOR CONFINED SPACE ENTRY

The space shall only be classed as fit for entry without BA if:

 The oxygen and flammable gas levels are the same as measured outside in

fresh air, and

 Toxic contaminants do not exceed current occupational exposure limits

 Also, the AGT1 shall confirm that there are no materials left inside which in his

judgement may give off sufficient quantities of vapour and fumes if disturbed,

such that the atmosphere would cease to be classed as fit for entry without

BA.

Table 1 Permitted Limits for Confined Space Entry and Work

Criteria

ENTRY WITHOUT BA

Entry with BA

(Refer to paragraph 9.8)

(Refer to paragraph 9.9)

Oxygen Content (%)

20.8 to 22.5%

19 to 20.8%

(Same as in fresh air)

Toxicity

<LTEL (8 hours)

<STEL (15 minutes)

(Occupational

(Long-term Exposure Limit) (Note

(Short-term Exposure Limit)

Exposure Limits (Note

1))

Hydrocarbon Vapour

<1% LEL

>4 to <25% LEL

(% Lower Explosive

Inspection, Hot and Cold Work

Only Inspection and Cold

Limit - measured on

Permitted (Note 4)

Work Permitted (Note 4)

a combustible gas

indicator)

1 to 4% LEL

> 25% LEL entry NOT

(Note 3)

Only Inspection and Cold Work

permitted under any

Permitted (Note 4)

circumstance

Notes:

(1)Occupational Exposure Limits for various toxic substances are defined in the UK HSE

Guidance Document EH40

(2) For longer work shifts (e.g. 12 hours) LTEL must be extrapolated to give 12-hour Time

Weighted Average (TWA).

(3) Lower Explosive Limit (LEL) synonymous with Lower Flammable Limit (LFL).

(4) Continuous gas monitoring must be performed throughout confined space occupancy.

9.7

ENTRY PERMIT ISSUE AND VALIDITY

When the gas test has been completed, the Area Authority shall consider the results.

He shall then issue the appropriate Work Permit, cross-referenced to the Confined

Space Entry Permit on which is specified the period in which he considers it safe to

enter the space, taking into account the nature of the space, possible contaminants,

type of isolations and the type of work proposed.

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An Entry Permit on its own does not authorise entry for any purposes other

than testing by AGT1.

The Entry permit shall be displayed at the job site. Entry points shall be barriered off

when the confined space is not manned.

Entry to the confined space shall commence and continue at any time during the

period for which the permit is valid. If the space is vacated during the period of

validity, a gas test shall be undertaken before re-entry. Alternatively, if continuous

gas monitoring equipment has been in use throughout the vacated period, entry may

proceed without the gas test. The period of validity shall not normally exceed one

shift.

In appropriate circumstances, the Site Manager, Site Controller, Offshore Installation

Manager (or his formally delegated nominee) in consultation with the Site HSE

Advisor, may permit the validity of an entry permit to be extended beyond a single

shift to a specified period of time, if the nature of the isolations and the degree of

cleanliness of the confined space are such that conditions within the space will not

change significantly during that period.

A proprietary Entry tag System shall be used to supplement the Entry permit to

enhance the control of entry into confined spaces. The advantages are:

 It can be prominently displayed at the entrance to a confined space

 It clearly indicates „DO NOT ENTER‟ or details the conditions of entry

 It is easily updated

9.8

PROCEDURE FOR ENTRY INTO CONFINED SPACES WITHOUT BA

CONFINED SPACE ATTENDANT

A suitably trained Confined Space Attendant shall be stationed at the designated

entrance to the confined space and shall perform the duties outlined in Section 3.6

ENTRANTS

Entrants to the confined space shall:

 Wear suitable PPE, as required

 Wear a harness and lifeline, if specified on the Level 2 Risk Assessment

 According to the type of work and the risk, take adequate rest periods out in

the open air

 Continuously monitor for oxygen, hydrocarbons and H₂S. This may be

achieved by one of the Entrants monitoring Crowcon Triple meter (or similar)

to ensure that the conditions are not worsening. If this should occur, the space

should be vacated, ventilated and re-tested until conditions have improved to

within the limits set out on the Entry Permit.

WORK ACTIVITY AFFECTING ENTRY WITHOUT BA

Even though a gas test may indicate that a confined space is fit for entry without BA,

if work is to take place within that is likely to generate toxic or flammable vapours to

such an extent that the atmosphere cannot be kept free of contaminants by forced or

natural ventilation (e.g. application of paint coatings), the space shall be treated as

not fit for entry without BA

Control Tier:

<<2>>

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Procedure for Confined Space Entry

Page 23 of 37

9.9

ADDITIONAL PROCEDURE FOR ENTRY INTO CONFINED SPACES WITH BA

CONFINED SPACE ATTENDANT

The Confined Space Attendant shall perform the duties listed in Section

3.0

paragraph 3.6. Additionally, where the space contains residual fluids (e.g. water) into

which a person might fall so that his face and BA are submerged, he shall be

assisted by a rescue person who shall be stationed at the opening in addition to the

Confined Space Attendant, equipped to make an entry wearing BA so as to give

immediate help, if he considers it safe to do so.

ENTRANTS

Entrants shall perform the duties listed in Section 3.0 paragraph 3.5. In addition, they

shall wear approved positive pressure BA and be trained in its use.

Note:

 Canister respirators shall not be used in any circumstances. Air-supplied

apparatus shall be used.

 All personnel expected to wear BA and carry out work at the same time are

recommended to be clean-shaven in order to provide a good seal between

mask and face.

 If it is not possible to class the space as „fit for entry without BA‟, entry WITH

BA may be permitted, subject to the criteria in Table 1 and in accordance with

the additional precautions below:

o Approved positive pressure BA is worn.

o Authorisation for ENTRY WITH BA has been given.

o Where practicable, retrieval gear is worn.

o The Entry Attendant must be stationed outside the space entrance at all

times.

o Rescue and reviving equipment and qualified personnel shall be readily

available.

9.10

CLEANING

REMOVAL OF SLUDGE, SCALE AND HARD DEPOSITS

After a tank or vessel has been opened up, as much oil, sludge and scale as possible

shall be removed by means of bailers, squeegees etc, aided, if convenient, by

adequately earthed water hoses. As much removal as possible should be carried out

from the open manhole door, but invariably it will be necessary to enter the

tank/vessel to remove all sludge and scale.

Earth sumps or suitable containers shall be provided for the reception of oil or oily

sludge. This material shall be contained and disposed of in a safe and

environmentally acceptable manner.

All pyrophoric scale shall be disposed of in an approved manner. During the time that

it is exposed to the air after removal, it shall be kept wet. Pyrophoric scale is removed

from offshore installations in sealed drums, the scale being 'slurried' with water.

Where there are hard deposits, necessitating the use of chipping tools, the PTW shall

specify that the surface being chipped must be kept thoroughly wetted during the

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Procedure for Confined Space Entry

Page 24 of 37

operation.

Where high-pressure water jets are used in the removal of sludge and scale, only

specifically trained operators shall be used. Where standard water hose and nozzles

are used to wash out, the nozzles shall be earthed.

USE OF CHEMICAL CLEANERS

If chemical cleaners are to be used then the MSDS for the chemical shall be

consulted and a risk assessment (CARA) conducted prior to use. In particular,

additional ventilation or respiratory protection may be required.

When introducing a chemical into a confined space, the compatibility of that chemical

with the contents of the confined space must be checked. If any doubts exist

regarding the compatibility of a chemical, the HSE Department shall be consulted.

Sludge and spent cleaning fluids must be contained and disposed of in a safe and

environmentally acceptable manner.

When chemical cleaning takes place there is a possibility for the production of toxic

gases, including H₂S. Therefore a closed drain system, outside the confined space,

shall be used for the disposal of effluent from these operations. Personnel engaged

in these operations shall wear suitable chemical protective clothing/equipment and

suitable toxic gas monitoring/warning devices shall be provided.

REMOVAL OF TRAPPED OIL OR VAPOUR

When repairs are to be carried out within a tank or vessel, care shall be taken to

ensure that oil is not trapped inside internal structural members. Any hollow supports

or bracing steelwork exposed to hydrocarbon should be carefully drilled at the lowest

and highest point to detect the presence of oil. If it is found, the hollow member must

be purged by one of the methods discussed above before work on the tank or vessel

is allowed to proceed.

Any linings or wear plates attached to the shell of a tank or vessel may trap liquid

hydrocarbons behind them. This liquid can percolate into the vessel or tank by way of

minute cracks. Therefore, the vessel or tank shall frequently be tested to ensure that

it remains gas free.

9.11

VENTILATION

„CLEANING-OUT‟ DOORS

Where confined spaces are provided with clean out doors, these doors shall be

opened after purging, and the confined space thoroughly ventilated.

USE OF VENTILATION EQUIPMENT

Ventilation shall preferably be accomplished using a positive method of mechanical

ventilation that is arranged to:

 Introduce sufficient fresh air and remove contaminants from all pockets or

corners of the confined space

 Avoid re-circulating contaminated air

Even after the confined space is cleaned and ventilated, the mechanical ventilation

equipment must be kept operating to provide secondary protection:

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Procedure for Confined Space Entry

Page 25 of 37

 In case of accidental introduction of harmful substances

 To remove contamination or heat that may be produced by the work

(e.g., welding and cutting, painting, coating)

The atmosphere must continue to be monitored for hazardous atmospheres while

personnel are inside the confined space.

VENTILATION AIR SOURCE

The ventilation air used will be from either:

 An electrical blower approved for a Zone 1 hazardous area, or

 An air driven blower

The air intakes for these devices shall be located where no contaminants may enter

the stream.

DISPOSAL OF CONFINED SPACE ATMOSPHERE

Outlets for power driven blowers, pneumatic air inductors, or air/steam inductors

used to draw vapours out of a confined space must be directed to a safe place far

from possible sources of ignition.

GENERAL VENTILATION

When welding (especially MIG/TIG) or other work is to be carried out in a confined

space, precautions shall be taken to ensure that an adequate flow of fresh air is

available and that welding fumes are removed. Great care shall be taken to ensure

that the airflow is always away from the breathing zone of the welder and that

contaminated air does not 'short circuit' back to the welder.

Where exhaust ventilation is used in a confined space, the extracted air shall be

diverted well away from the confined space so that replacement air shall be fresh.

When adequate ventilation cannot be provided, approved breathing apparatus or a

suitable facemask supplied with fresh air shall be worn.

Compressed oxygen or instrument air shall never be used to ventilate a confined

space.

9.12

LIGHTING AND PORTABLE TOOLS

TEMPORARY LIGHTING

The following precautions shall be observed when using temporary lighting:

 Where the confined space has not been declared gas free, air driven

flameproof lights or certified battery powered torches shall be used. Lights

must be certified for a Zone 1 (Division 1) area.

 Confined spaces, which have been certified gas free but where flammable

residues could remain, may be illuminated as above; or by extra low voltage

(25V ac) portable lighting equipment, approved for use in a Zone 1 (Division 1)

area.

 Where the confined space has been cleaned of all flammable residues and

certified gas free, or is a confined space by virtue of restricted access alone

and there has never been the possibility of it containing a flammable

atmosphere, standard low voltage industrial lighting may be used.

Control Tier:

<<2>>

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Procedure for Confined Space Entry

Page 26 of 37

 The supply cables to the (approved for use in a Zone 1 (Division 1) Area)

transformers, for extra low voltage portable lights, must always be supported

above ground and the transformers never taken inside the Confined Space.

 Particular attention must be paid to the protection of cables passing through

doors and entry points

TOOLS

If the atmosphere inside the confined space requires BA to be worn (see Table 1)

because of the presence of hydrocarbon, no electrical tools must be used by the

entrants. Air-driven tools only may be used. Tools with the potential to produce

sparks, e.g., grinders or needle guns, shall not be used.

10 WELDING

Before any welding, cutting and grinding may be carried out in a confined space; the

space shall be proved completely gas free, and free of all flammable residuals.

11 CONFINED SPACE PLANNING FLOW-SHEET

A schematic diagram to show the sequence of planning for Confined Space Entry is

shown in Appendix A.

12 JOB COMPLETION

If the vessel is unmanned for any period of time the entry points shall be barriered

off. The Entry Permit must be cancelled upon completion of the entry and after all

entrants have exited. At the end of a job, a thorough check must be made by Area

and Performing Authority to ensure that no personnel, tools or equipment have been

left behind.

13 RESCUE

Emergency Response arrangements shall be considered in the Risk Assessment

and shall cover, rescue, resuscitation, and treatment of casualties.

13.1

THE RESCUE TEAM

The Rescue Team should respond immediately to rescue calls from the Attendant or

any other person recognising a need for rescue from the confined space.

The Rescue Team must be trained to perform the assigned rescue functions. In

particular, members must be trained in the proper use of personal protective and

rescue equipment, including breathing apparatus. Also, at least two Rescue Team

members shall be certified in first aid and in Cardio-Pulmonary Resuscitation (CPR).

13.2

THE RESCUE TEAM

The rescue plan should be written to include as a minimum:

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Procedure for Confined Space Entry

Page 27 of 37

 A means of raising the alarm by the Confined Space Attendant or other person

observing an emergency situation

 An assessment of the hazards associated with the confined space

 The required gas testing/monitoring equipment

 The personnel required to perform the rescue

 All precautions to be taken while in the confined space

 The required personnel protective equipment (PPE)

 The required rescue equipment

 The required tools and any other special equipment

 First aid and resuscitation equipment

A means of communication shall be provided and a system of signals (agreed in

writing) and understood by all personnel involved. These communication

arrangements shall be maintained throughout the duration of the entry.

In all cases of confined space entry, a trained attendant shall be posted outside the

entry/exit in order to handle emergencies. Circumstances may require an assistant to

the attendant or more than one attendant posted at different access/entry points. The

attendant(s) must be aware of their responsibilities and be trained as rescue team

members.

14 APPENDICES

14.1

CONFINED SPACE ENTRY PLANNING CHART

14.2

EXAMPLE OF A RESCUE PLAN

14.3

PROCEDURE SUMMARY

14.4

FEEDBACK & IMPROVEMENT SUGGESTIONS

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Procedure for Confined Space Entry

Page 28 of 37

Appendix A: Confined Space Entry Planning Chart

Planning Process identifies need

to work in Confined Space

Isolating Authority prepares

Positive Isolation for

Confined Space Entry

Approved by Area Authority

Area Authority sets up

Team to Perform Level 2

Risk Assessment to

Define Controls to minimise

risk to ALARP

Identify safer

Is Risk

engineering/administrative

Acceptable

controls

Yes

Performing Authority

Requests Confined Space

Gas Tester

Yes

Carries out Gas Tests

Gas Tester

Extra Controls

against the Entry with

Carries out Gas Tests

successful

BA criteria

Risk Assessment

Team

Are results within criteria

Re-examine controls

Are results within

for entry without BA

to improve

the criteria for entry

atmosphere in Vessel

with BA

Yes

Gas Tester

Signs Entry Permit to signify

safe to enter without BA

safe to enter only with BA

Performing Authority applies

Performing Authority

for Permit to Work

applies for Permit to Work

incorporating controls identified

incorporating controls

in Risk Assessment

identified in Risk

Plus additional controls

Assessment

required by use of BA

Area Authority

Work performed to original

Issues PTW

Area Authority

scope and with all the

Issues PTW

Performing Authority

controls in place

If Work Scope or conditions

Performing Authority

Accepts PTW, puts in

in the confined space

Accepts PTW, puts in place

place all the controls and

change

all the controls and carries

carries out Toolbox talk

Stop work and go back to a

out Toolbox talk with

with workforce

New Risk Assessment

workforce

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Procedure for Confined Space Entry

Page 29 of 37

Appendix B: Example of a Rescue Plan

This is an example of a basic Rescue Plan for Confined Space Entry. Exact details

must be developed on each occurrence. The HSE Administrator in a shared location

shall retain a master set of Rescue Plans. Any revisions should be distributed

accordingly.

Confined Space Rescue Plan

WORK LOCATION/TAG No.

DATE WORK STARTS

PERSON(S) IN CHARGE

COMPANIES INVOLVED

COMMUNICATION METHOD

DESCRIPTION OF WORK

MAIN SAFETY PRECAUTIONS



Entry points and local vicinity must be kept clear to

All persons involved to ensure they

ensure unrestricted access for Emergency Services.

are familiar with and observe these



Single Man-way only

requirements



ALL conditions of the Task Risk Assessment and Permit

to Work must be applied with and in force.



Entrants made aware of hazards within vessel



Gas monitors to be sited at each entry point throughout

the duration of the Entry.



Site Rescue Team and Control Room operator to be

informed of work taking place and informed at point of

entry / exit to / from the Confined Space.

EMERGENCY ACTION



Stand-by attendant to raise the alarm by informing

control-room personnel giving details of situation.



Control room operator to contact Rescue Team



In the case of a casualty being completely immobile,

any movement of the person will be under the control of

the Site Rescue Team.



The Site Medic will determine the best method and

equipment to be used to remove the injured person

from the vessel.



The Site Medic will review the extent of the injuries and

on the removal of casualty from structure decide to

either treat in the First Aid Room, or transport to

appropriate hospital.

Name

Signature

Date

Prepared By:

OIM / SC / SM:

Site Rescue Team:

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Procedure for Confined Space Entry

Page 30 of 37

the confined nature of the place of work in combination

should be considered as confined spaces. In contrast,

Appendix C: Procedure Summary

with one or more of the following:

more open areas of low ground, tank bunds, and other

¾ The possible presence of flammable and/ or toxic

areas where natural ventilation will prevent slow

substances

accumulation of heavy gases, are not included in this

¾ An oxygen-deficient atmosphere

definition.

CONFINED SPACE ENTRY

¾ An oxygen-enriched atmosphere

¾ Ingress of solids or liquids

There may also be instances where there are no

BP Golden Rule

¾ The presence of excessive heat

significant risks of atmospheric hazards, and that all

Entry into any confined space cannot proceed unless:

hazards within the space can be eliminated prior to entry.

Examples of Confined Space

Cases such as these must follow the following criteria:

¾ All other options have been ruled out

¾ No risk of atmospeheric hazards either from

¾ Permit has been issued with authorisation by a

A Confined Space may be any place included in the

surrounding area or from the task being performed.

responsible person

following example list, in which by virtue of its enclosed

¾ Excavation is outwith areas identified as being

¾ All sources of energy hazards affecting the space have

nature, there arises a reasonable foreseeable specified

hazardous.

been positively isolated or removed

risk. The list below is not a complete listing; therefore do

¾ The excavation does not require any form of isolation

¾ Testing of atmospheres is conducted by an Authorised

not assume if not on the list that it is not a Confined

prior to entry.

Gas tester (level 1)and repeated as often as defined by

Space.

¾ No risk of engulfment from Ingress of solids or liquids.

the Risk Assessment

¾ No risk from excessive heat.

¾ The oxygen, flammable and toxic levels are maintained

Some confined spaces are easy to identify and include:

¾ Safe means of access and egress.

within acceptable limits or special control measures are

¾ Storage tanks

¾ Excavations benched or shored to reduce risk of

applied

¾ Silos

collapse

(See

- AZSPU-HSSE-DOC-00055-2

¾ Safe means of access, egress and communication are

¾ Process vessels and exchangers

Procedure for Excavation.)

established and maintained

¾ Road and rail tankers

¾ Continuous monitoring of O2, LEL and other toxic

¾ A competent stand-by person is stationed

¾ Enclosed drains and sewers

gasses are carried out inside the excavation

¾ Unauthorized entry is prevented

¾ Sumps

¾ A means of rescue is available that has been proved

The mandatory Level 2 risk assessment for the above

effective

Other confined spaces can be less obvious but just as

mentioned cases, must ensure a practical application of

dangerous. Examples include:

mitigations based on the hazards that are

‟„actually”

BP Definition of a Confined Space

¾ Ductwork

present, then, providing that the above criteria is satisfied,

¾ Void spaces

the excavation may be classified as

“not a confined

A confined space is any enclosed area that is:

¾ Trenches & excavations

¾ Large enough for a person to enter, or insert their head

space”.

¾ Vessel skirts

¾ Has limited or restricted means of access and exit

¾ Rooms with limited ventilation

Hazards Associated with Confined Spaces

¾ Is not designed for normal or continuous occupation

¾ Temporary tented areas

(unless ventilation is

specifically designed for worst-case leakage inside

Dangerous concentrations of gases and vapours;

This definition includes any space of an enclosed nature where

the area).

there is risk of death or serious injury from hazardous

These include:

¾ Toxic substances in hazardous concentrations, e.g.,

substances or dangerous conditions, e.g. lack of oxygen. A

Note: - A confined space may not necessarily be enclosed

confined space is a place which is substantially, though not

hydrogen sulphide (H2S), benzene and hydrocarbon

on all sides.

gases that remains from the process or enters from

always entirely, enclosed and where serious injury can occur

adjoining plant because it has not been effectively

from hazardous substances or conditions within the space or

For all confined space work, the responsibility for safety,

nearby. This includes large pipelines, tanks, vessels,

isolated

during the entire operation, rests with the Performing

¾ Flammable gases, vapours and liquids with potential

separators, silos, ducts, sewers, pits, flues, manholes and voids

Authority, Confined Space Attendant, Authorised Entrants

for fire or explosion

between modules and in legs on offshore Installations. It also

and Rescue Team personnel. These personnel must

¾ Gas or vapour emitted from scale or sludge,

includes any space in which dangerous levels of contaminants

ensure that adequate steps have been taken to eliminate

particularly resulting from mechanical disturbance

can accumulate and ventilation is restricted, eg the space

or control the hazards present.

above floating roofs on floating roof tanks, open-topped tanks,

during access or cleaning or due to the heat from

welding operations

closed or unventilated rooms, deep excavations (see section

Trenches and Excavations

2.2), sumps and culverts and any other poorly ventilated areas.

The hazards that this document addresses arise through

All excavations and trenches deeper than

1.2 metres

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Procedure for Confined Space Entry

Page 31 of 37

CONFINED SPACE ENTRY (cont)

Dangerous situations can arise from oxygen enriched

Roles & Responsibilities

or deficient atmospheres:

The special dangers of working in oxygen-enriched

SM / SC / OIM shall ensure:

atmospheres cannot be over emphasised. Oxygen

¾ That adequate numbers of Competent responsible

¾ Gas, vapour or fumes produced by operations being

enrichment may occur by leakage of oxygen supplies or by

persons are appointed to manage and maintain the

carried out in the confined space such as welding and

build-up of oxygen during oxygen-rich flame cutting

requirements of this procedure

cutting, brush and spray painting and the use of adhesives

processes.

¾ That this procedure is strictly adhered to for all

and solvents

occasions when it is identified that confined space

¾ Exhaust gases drawn into the confined space from prime

Enrichment of only a few percent will make materials that

entry is to take place.

movers or heating equipment

will normally only burn slowly or with difficulty, burn fiercely

¾ That formal records of all risk assessments are

with catastrophic results for the occupants of the confined

maintained in accordance with this procedure

Dangerous situations can arise from sources inside or

space.

¾ The arrangements for training of staff and contractors

outside a confined space. These include:

in the use of the procedure and the keeping of

¾ Failure to positively isolate the confined space

Every precaution shall be taken to avoid oxygen

records.

¾ Mechanical equipment in the space

enrichment. In particular:

¾ Ensuring the competence of all authorities involved in

¾ The ingress of steam, hot water or other liquids which may

¾ Oxygen cylinders shall be kept outside the confined

Confined Space Entry.

cause scalding or drowning

space where practicable.

¾ Approve the outcome of Level 2 Risk Assessments

¾ Communication difficulties

¾ Oxygen supplies shall be isolated outside the space

¾ Poor access and egress restricting movement for normal

during work breaks

The Area Authority shall be responsible for ensuring:

work and escape

¾ Hoses supplying oxygen shall be removed from the

¾ That confined space entry has been risk assessed

¾ Poor access and egress for rescue

space during work breaks.

and planned

¾ Slippery surfaces

¾ Oxygen shall never be used to 'sweeten' the

¾ That all persons involved in confined space entry are

¾ Sources of ionising radiation (e.g. level gauges, sludge

atmosphere of a confined space.

instructed on the requirements of risk assessment,

and LSA scale or NORM)

¾ The space shall be adequately ventilated at all times

permit to work conditions, and any risks or hazards

¾ Any confined space that might normally contain naturally

associated with the work activity

occurring radioactive material shall be checked by a

There is also a danger of oxygen deficiency due to

¾ That regular inspection is performed on all confined

certified Radiological Protection Supervisor and shall be

combustion processes, purging with inert gas, inert gas

space entry activities to confirm that conditions are

subject to the requirements of procedure AZSPU-HSSE-

welding (MIG/TIG) or oxidation processes (e.g. rusting)

suitable and sufficient and, that all personnel are in

DOC-00058-2 - Management of Radioactive Materials and

occurring in steel vessels left completely closed for some

compliance with this procedure

Radiation Generators

time.

¾ That the Performing Authority performs Risk

¾ Where vessels are fitted with Nucleonic Gauges for

Assessments, and conducts Toolbox Talks

measuring levels or product density, or where the source

Other potential risks include:

associated with confined space entry requirements.

must be disarmed or retracted, the source must be made

¾ Electric shock or ignition of flammable gases from

¾ Ensuring all persons involved in confined space entry

safe in accordance with procedure AZSPU-HSSE-DOC-

portable lights, tools, or associated electrical

have received appropriate training and certification

00058-2

- Management of Radioactive Materials and

equipment.

¾ Leading the Level 2 Risk Assessments for Confined

Radiation Generators

¾ Possibility of static electricity build-up due to a lack of

Space Entry (CSE) to ensure personnel are protected

¾ Vessel boots and sumps full of liquid which could be fallen

proper bonding and grounding procedures.

from confined space hazards, using a Level 2 Risk

into

¾ Injury from mechanical equipment such as mixers,

Assessment

¾ Pyrophoric scale formed in systems which may contain

conveyors, etc., inadvertently activated.

¾ Authorising entry for the work to begin (provided that

H2S

¾ Direct contact with corrosives or irritants.

the requirements of this procedure have been met)

¾ Excessive noise

¾ Contaminants entering from other areas through

¾ Cancelling or suspending the Confined Space Entry

¾ Inadequate visibility

ducts, piping, etc

(CSE) when the job is complete or when

¾ Excessive temperature in the confined space

(causing

¾ Ignition from static electricity.

unacceptable conditions arise

heat stress to personnel)

¾ General safety hazards, including communication

¾ Possible ingress of fumes from drain systems etc

problems and physical hazards. For example:

The Performing Authority shall ensure:

¾ Possible collapse of excavations

¾ Falling objects, inadequate visibility, excessive

¾ The compliance of all personnel under their

¾ Inadequate shoring; appropriate shoring shall be in place

temperature / noise / vibration, etc

supervision with this procedure when involved in

prior to entry

¾ Possible collapse of excavations

confined space entry activities

Control Tier:

<<2>>

Revision Date: 14 Sept 2007

Document Number: << AZSPU-HSSE-DOC-00013-2>>

Print Date: 7/24/2010

PAPER COPIES ARE UNCONTROLLED. THIS COPY VALID ONLY AT THE TIME OF PRINTING. THE CONTROLLED VERSION OF THIS DOCUMENT CAN BE FOUND AT

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Procedure for Confined Space Entry

Page 32 of 37

CONFINED SPACE ENTRY (cont)

¾ Enter the readings obtained while testing the

Confined Space Attendant:

atmosphere in the Confined Space onto the Confined

The Confined Space Attendant has a vital function to

Space Entry Permit

perform.

¾ If the atmosphere is within the acceptable limits for

¾ That a risk assessment has been performed and a toolbox

entry, sign section 8 of the Work Permit.

Under no circumstance may the Confined Space

talk conducted

¾ Where the gas concentrations are outside the

Attendant enter the confined space or leave his post

¾ That all personnel are informed of, and understand, the

acceptable limits the AGT1 should NOT sign the

whilst there are personnel inside.

risks associated with the task they are performing, and any

permit, but discuss measures to further purge the

He must also:

associated works that may affect their work activity

space with the Area and Performing Authorities.

¾ Maintain an accurate count of all persons in the

¾ That the activity is executed in accordance with this

¾ Observe and record any sludge or scale in the

space by:

procedure

Confined Space and record it on the Confined Space

o Using a tally board on which the name, entry and

¾ That confined space entry is halted if an unsafe situation

Permit ensuring that the findings are clear and easy

exit times for all personnel entering or leaving the

occurs.

to read.

confined space shall be recorded

¾ That good housekeeping practices are implemented at all

o Marking airlines and / or safety lines so that each

work areas

Level 2 AGT‟s are qualified to carry out gas tests in

individual inside the tank is clearly identified in the

¾ That work activities have been reviewed and pertinent

support of all activities „excluding‟ Confined Space Entry

event of a problem

information exchanged with all other affected parties.

& carry out continuous monitoring during ongoing work.

¾ Be aware of the hazards that may be faced during

¾ That they know and recognise hazards that may be faced

entry, including the mode, signs or symptoms, and

during entry by participating in a Level 2 Risk Assessment

Level 3 AGT‟s are individuals, usually the PA, who is

consequences of any exposure

before entry

approved by the Site Manager, Site Controller or Offshore

¾ Monitor conditions and activities inside and outside

¾ That he understands all the conditions on the PTW and

Installation Manager as having undergone practical

the space to determine if it is safe for entrants

cross-referenced Certificates and signs to confirm his

instruction on the use and interpretation of the results from

¾ Remain outside the confined space during entry

responsibility for complying with all the conditions on the

both portable and personal gas monitors. The AGT 3 has

operations until relieved by another Attendant

confined space entry certificate

no authority to record gas test results on the PTW, their

¾ Keep entrants under effective surveillance and

¾ Ensure that personnel entering a confined space have all

responsibility is only for continuous monitoring.

maintain effective and continuous communication

necessary personal protective equipment

with them during entry by one or more of the following

¾ Ensure that rescue services are informed about the entry

Authorised Entrants:

methods:

and that they are readily available in an emergency

The authorised entrants shall:

o Line-of-sight (not always possible)

¾ Ensure that the necessary rescue and resuscitation

¾ Follow established safety standards and practices

o Voice contact (allowing for distance and ambient

equipment are readily available

¾ Participate in a Toolbox Talk

noise)

¾ Ensure acceptable safe entry conditions are maintained

¾ Read the conditions required by the Confined Space

o Radio with agreed periodical contact

consistent with the terms of the Confined Space Entry

Entry Permit and the associated Permit to Work

o Pre-arranged signals on air-klaxons, whistles etc

(CSE) certificate

¾ Know and recognise the hazards that may be faced

o Pre-arranged lifeline signals

¾ Stop work and remove everyone from the confined space

during entry including signs or symptoms, and

o Distress signal unit

if the conditions of entry, including the scope of work,

consequences of the exposure

¾ Order authorised entrants to evacuate the confined

change

¾ Inspect, test and make proper use of equipment and

space immediately if:

protective devices

o A condition is observed that is not allowed

Authorised Gas Testers:

¾ Maintain communication with the Confined Space

o Behavioural effects of hazard exposure are

AGT‟s are approved persons who have been fully trained

Attendant to enable the attendant to monitor the

detected

and certified in gas testing. There are three levels of AGT,

entrants‟ status

o A situation occurs outside the confined space that

1, 2 & 3. Authorised Gas Tester Level 1 (AGT1) is trained

¾ Alert the attendant if an unsafe condition exists or

could endanger the entrants

to gas test prior to work in confined spaces. Only AGT1

when symptoms of exposure appear

o An uncontrolled hazard is detected inside the

can test for Confined Space Entry.

¾ Come out from the confined space as soon as

confined space

possible when:

o The attendant must leave the work station

The AGT1 shall:

o Ordered by the attendant

¾ Ensure unauthorised persons are not allowed to

¾ Prove the safe atmosphere

(i.e. free of toxic and

o The entrant recognises the warning signs or

approach or enter a confined space while entry is

flammable gases) in the confined space using correctly

symptoms of exposure

underway

calibrated gas testing equipment in his charge with an

o Any unsafe conditions exist

¾ Be equipped

(e.g. radio, telephone) to summon

understanding of the limitations of the equipment

assistance rapidly if Entrants get into trouble.

¾ Prove Oxygen Levels within levels required

Control Tier:

<<2>>

Revision Date: 14 Sept 2007

Document Number: << AZSPU-HSSE-DOC-00013-2>>

Print Date: 7/24/2010

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Procedure for Confined Space Entry

Page 33 of 37

CONFINED SPACE ENTRY (cont)

New personnel shall not be assigned to these tasks,

need to be evacuated in an emergency. It would

Notes:

unless under training and accompanied by a competent

require a winch to vertically hoist an average person

Rescue and resuscitation equipment shall be near to the

person (maximum 2 new starts to 1 supervisor) who is

from a space below. Wearing a harness and lifeline

worksite and personnel trained in its use will be readily

familiar with the hazards of confined space entry.

shall only be considered practicable if the nature of

available and aware of the entry.

the confined space is such that the attendant could

Registers will be held on site of all personnel deemed

hoist or drag out the person from the space if the

Confined Space PPE

competent for all the roles associated with Confined Space

latter were immobilised, and if the rope would not

Entry, and will be managed by the Site Manager / Site

impede an unassisted exit. Wearing only the harness

Appropriate personal protection, e.g., head, foot, hand, eye,

Controller / Offshore Installation Manager.

should also be considered - a rescuer could attach

ear, face, body and respiratory protection, must be worn when

the lifeline to effect evacuation of the person

entering an Entry Permit Controlled Confined Space.

Planning Process

o Procedures for entering confined spaces with and

without Breathing Apparatus (BA) are described in

Where required by the Risk Assessment a life-line attached to a

Planning for confined space entry shall include the

Paragraphs 5.6 and 5.7.

full body harness should be used by all entrants during entry

following:

into a confined space.

¾ Confined space hazard identification and Level 2 Risk

Risk Assessment

Assessment (mandatory)

Competency, Training & Awareness

¾ Positive Isolation to ensure no process or utility fluids

A Level 2 Risk Assessment must be completed before any

or gases may enter during the entry

entry into a confined space, and must identify:

BP and its Contractors must provide adequate training for all

¾ Entry Permit preparation to enable Gas Tester to

¾ The sequence of work to be performed in the

personnel likely to be involved in confined space entry, either as

enter the vessel

confined space

entrants, attendants, rescue team members or gas testers, to

¾ Gas testing and confined space inspection:

¾ The specific hazards known or anticipated

ensure that they possess the understanding, knowledge and

¾ Prior to any entry into a confined space, the

¾ Control measures to be implemented to eliminate or

skills necessary to safely perform their assigned duties.

atmosphere shall be tested to determine the

reduce each of the hazards to an acceptable level

precautions necessary, and an Entry Permit issued.

Training shall include, but not be limited to:

¾ Throughout the period of entry into confined spaces,

The Level 2 Risk Assessment must be available “at the

¾ AGT1 shall be fully trained and certified in gas testing for

the atmosphere in the space must be strictly

work site” for review.

confined space entry purposes. Assessed and confirmed

controlled to prevent persons being exposed to risks

competent in accordance with (Doc. No: AZSPU-HSSE-

associated with toxic and/or flammable fumes and

Atmosphere Testing

DOC-00060-2) Permit to Work System

vapours in the atmosphere, and with atmospheres

¾ Confined Space Entry Attendants shall be formally briefed

that may be deficient (or enriched) in oxygen.

The atmosphere must be tested every time to determine:

on all aspects of the proposed entry activities and on their

¾ Entry Permit issue and duration of validity

¾ Oxygen Deficiency ( it must be checked first) and

particular duties

¾ Procedures for control of work including procedures

must be between 20.8% and 22.5%

¾ Entrants shall be briefed by the Performing Authority

for any non-compliance with normal standards based

¾ Lower Explosive Limit (LEL) Flammability

Supervisor or Confined Space Attendant to ensure that

on the Level 2 Risk Assessment

¾ H2S - Toxic

they understand the hazards of the task in hand, signs,

¾ The resources available to deal with any potential

symptoms and consequences of exposure; and are aware

emergency that may arise should limit the number of

Methods of Communication

of the emergency signal to be used by the attendant, if

personnel entering a confined space.

evacuation becomes necessary.

¾ An Entry Permit is not a permit to work and for all

There must always be constant means of communication

¾ The Rescue Team Members shall receive approved PPE

work in the Confined Space a relevant Permit to Work

between the entrant and the attendant. The means of

and rescue equipment (including BA sets) and be trained

shall be issued

communication are:

in their use. In addition to rescue training, each team

¾ Gas tests required for hot work shall be carried out

¾ Radio with agreed periodical contact

member must undergo basic first aid and resuscitation

separately (i.e. the tests done for entry are not valid

¾ Visual (not always possible)

training.

for the hot work permit).

¾ Verbal (allowing for distance and ambient noise)

¾ Employees and Contractors‟ personnel who will be

¾ Emergency response arrangements:

¾ Pre-arranged signals on air-klaxons, whistles, etc

involved in the entry must also be fully conversant with the

o Access and egress arrangements should take

¾ Pre-arranged lifeline signals

scope of work, Emergency Response Plan and response

into consideration the possibility that a casualty may

¾ Distress signal unit

actions

Control Tier:

<<2>>

Revision Date: 14 Sept 2007

Document Number: << AZSPU-HSSE-DOC-00013-2>>

Print Date: 7/24/2010

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Procedure for Confined Space Entry

Page 34 of 37

CONFINED SPACE ENTRY (cont)

A means of communication shall be provided and a

Confined Space Entry Checklist

system of signals (agreed in writing) and understood by all

personnel involved. These communication arrangements

Checklist

YES

Job Completion

shall be maintained throughout the duration of the entry.

Is there is no other way to do the job

PTW has been completed and at site /

If the vessel is unmanned for any period of time the entry

In all cases of confined space entry, a trained attendant

installation for reference

points shall be barriered off. The Entry Permit must be

shall be posted outside the entry/exit in order to handle

Risk Assessment is attached to PTW

cancelled upon completion of the entry and after all

emergencies. Circumstances may require an assistant to

Performing Authority has notified

entrants have exited. At the end of a job, a thorough check

the attendant or more than one attendant posted at

Emergency Response Team

must be made by Area and Performing Authority to ensure

different access/entry points. The attendant(s) must be

All personnel have received Confined

that no personnel, tools or equipment have been left

aware of their responsibilities and be trained as rescue

Space Entry training

behind.

team members.

Toolbox meeting has been held and

documented prior to commencement

Emergency Response

Auditing & Monitoring

of work

Confined Space Attendant is on site

Emergency Response arrangements shall be considered

Each Asset shall undertake internal audits of the operation

and in communication with entrants

in the Risk Assessment and shall cover, rescue,

of Confined Space Entry. The auditing process including;

Gas readings have been taken before

resuscitation, and treatment of casualties

frequency, checklist, register, actions, tracking and close

work commenced and periodically

out may be included in the audit program of the Permit to

there after

The Rescue Team:

Work System at each site.

Attendant is aware of the hazards

The Rescue Team should respond immediately to rescue

associated with the confined space

calls from the Attendant or any other person recognising a

These audits must examine the detailed reviews of

Attendant is aware that they cannot

need for rescue from the confined space.

Confined Space Entry, and check compliance with this

attempt to enter confined space for

procedure and any deviations in place."

any reason

The Rescue Team must be trained to perform the

Housekeeping in the area of a

assigned rescue functions. In particular, members must be

confined space operation is to an

trained in the proper use of personal protective and rescue

acceptable standard

equipment, including breathing apparatus. Also, at least

Correct PPE is available and being

two Rescue Team members shall be certified in first aid

worn

and in Cardio-Pulmonary Resuscitation (CPR).

There are no other activities in the

area that could have an adverse

The Rescue Plan:

effect on confined space operation

The rescue plan should be written to include as a

All types of energy have been isolated

minimum:

¾ A means of raising the alarm by the Confined Space

Attendant or other person observing an emergency

situation

¾ An assessment of the hazards associated with the

confined space

¾ The required gas testing/monitoring equipment

¾ The personnel required to perform the rescue

¾ All precautions to be taken while in the confined

space

¾ The required personnel protective equipment (PPE)

¾ The required rescue equipment

¾ The required tools and any other special equipment

¾ First aid and resuscitation equipment

Control Tier:

<<2>>

Revision Date: 14 Sept 2007

Document Number: << AZSPU-HSSE-DOC-00013-2>>

Print Date: 7/24/2010

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Procedure for Confined Space Entry

Page 36 of 37

Revision/Review Log

Revision Date

Authority

Custodian

Revision Details

09 Sept 2004

CHSSE Manager

CHSSE Team

Initial Issue as controlled document

Leader

07 Sept 2007

Alan McNulty

Esmira

General:

(CHSSE Manager)

Akhundova

Throughout the procedure the document

(CHSSE Team

numbering for referred procedures has been

Leader

changed from UNIF to AzSPU.

Section 1. Introduction:

1.1Purpose; Wording changes. 1.2 Scope;

Wording changes. The following are inclusion to

Section 1 are 1.3 Legislation & Standards, 1.4

Company Requirements, 1.5 Stopping Unsafe

Work, 1.6 Deviations, 1.7 SSOW Specific Cross

References (new doc control numbers), 1.8

Confined Space Entry BP Golden Rules of Safety,

1.9 Language Facilitation, 1.10 Procedure

Summary

Section 2. Roles & Responsibilities:

Is now “Definitions and Abbreviations”

Section 3. Auditing and Monitoring:

Is now “Roles and Responsibilities”. Changes

made to the responsibilities of SM, SC, OIM, Area

Authority, Performing Authority, Authorised Gas

Tester.

Section 4. Competency, Training and

Awareness:

Is now “Definition of a Confined Space”. New

Section.

Section 5. Planning and Procedure:

Is now “Hazards Associated with Confined

Spaces”. Moved from Appendix B of previous

revision.

Section 6. Welding:

Is now “Confined Space Personal Protective

Equipment (PPE)”. Moved from Appendix C of

previous revision.

Section 7. Confined Space Planning Flow-

Sheet:

Is now “Auditing and Monitoring”. Confined Space

Planning Flow-Sheet is now Appendix A.

Section 8. Job Completion:

Is now “Competency, Training and Awareness”

Section 9. Rescue:

Is now “Planning and Procedure”. Additional

paragraph added to 9.0

Section 10. Is now “Welding”

Section 11. Is now “Confined Space Planning

Flow-Sheet”

Section 12. Is now “Job Completion”

Section 13. Is now “Rescue”

Appendices.

Confined Space Entry Planning Chart, Figure 1

Control Tier:

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Document Number: << AZSPU-HSSE-DOC-00013-2>>

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Procedure for Transportable Compressed Gas Cylinders

Page 2 of 20

TABLE OF CONTENTS

INTRODUCTION

1.1

PURPOSE

1.2

SCOPE

1.3

LEGISLATION & STANDARDS

1.4

COMPANY REQUIREMENTS

1.5

STOPPING UNSAFE WORK

1.6

DEVIATIONS

1.7

DOCUMENT REVIEW

1.8

SSOW SPECIFIC CROSS REFERENCES

1.9

LANGUAGE FACILITATION

1.10

PROCEDURE SUMMARY

DEFINITIONS

RESPONSIBILITIES

3.1

SITE MANAGER (SM)/SITE CONTROLLER (SC)/OFFSHORE INSTALLATION MANAGER (OIM)5

3.2

AREA AUTHORITY (AA)

3.3

PERFORMING AUTHORITY (PA)

3.4

PERSONS RESPONSIBLE FOR INSPECTION AND MAINTENANCE

GAS CYLINDER PROCUREMENT

4.1

DESIGN, MANUFACTURE AND TESTING

4.2

FILLING OF CYLINDERS

4.3

PERIODIC INSPECTION

RECEIPT OF CYLINDERS ON SITE

5.1

DESIGN, FABRICATION AND TESTING OF MULTIPLE CYLINDER TRANSPORT

5.2

CYLINDER IDENTIFICATION

5.3

CYLINDER MARKINGS

CYLINDER STORAGE

6.1

ALL CYLINDERS

6.2

OXYGEN CYLINDERS

6.3

CYLINDERS FOR LIQUEFIED OR DISSOLVED GASES

6.4

DAMAGED CYLINDERS

CYLINDERS EXPOSED TO FIRE

CYLINDER HANDLING

8.1

TRANSPORT

8.2

LIFTING

8.3

MOVEMENT OF CYLINDERS ON SITE

8.3.1

Cylinder Trolleys

8.3.2

Electric Cables

CYLINDER USE

REFERENCES

APPENDIX B: FEEDBACK & IMPROVEMENT SUGGESTIONS

Control Tier:

<<2>>

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Procedure for Transportable Compressed Gas Cylinders

Page 3 of 20

1 INTRODUCTION

1.1

PURPOSE

This procedure specifies the requirements necessary for the safe procurement, handling, use,

storage, and transportation of gas cylinders for compressed gases and gases liquefied under

pressure.

1.2

SCOPE

The contents of this procedure are applicable to all BP owned and managed sites / installations

in Azerbaijan and Georgia. Contractors working on BP owned or managed sites / installations

are also responsible for alignment with this procedure.

This document does not replace the procedures prepared and adopted by specialist

contractors. Neither does it supersede any national and local regulatory requirements.

This procedure contributes to compliance with the “HSE expectations” contained in “getting

HSE right”, the „Golden Rules of Safety‟ and the Control of Work (CoW) standard that the

Hazards associated with BP activities are identified and that the Risks are assessed and

managed.

All guidelines contained shall be regarded as the minimum requirements for BP owned or

managed sites / installations in Azerbaijan and Georgia.

The scope covers defined activities of BP and Contractors at all BP AzSPU sites and

installations.

The contents of this procedure apply to gas cylinders that contain pressures greater than 10 psi

(0.5bar) on all BP managed and owned sites in Azerbaijan and Georgia.

Where necessary, this procedure should be used in conjunction with procedure AZSPU-HSSE-

DOC-00064-2: Welding and Cutting, which provides advice specifically for the storage and use

of compressed gas cylinders for welding and cutting activities.

1.3

LEGISLATION & STANDARDS

The aim of this Safe System of Work is to achieve ”no accidents”, “no harm to people” and “no

damage to the environment”. To achieve this aim, this SSOW complies with applicable

Azerbaijanian and Georgian Legislation (Ref. Law of the Azerbaijan Republic on Technical

Safety, 02.11.1999.), the terms of the Production Sharing Agreement (PSA) and mandatory BP

Standards.

In the absence of local regulations, BP Group Standards will apply. In addition, appropriate UK

and US regulations and industry best practice have been considered in setting suitable goals

and targets.

1.4

COMPANY REQUIREMENTS

It is a company requirement that all tasks are subjected to an assessment of risk to

demonstrate that risks have been reduced to as low a level as reasonably practicable (ALARP).

Control Tier:

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Procedure for Transportable Compressed Gas Cylinders

Page 4 of 20

This can be achieved by complying with the Company‟s existing standards. Where compliance

with Company standards cannot reasonably be achieved, a formal level 2 Risk Assessment will

be undertaken to identify any additional controls and demonstrate that risks remain as low as

reasonably practicable. Whether by compliance with Company Standards or through level 2

Risk Assessment, the Company‟s Golden Rules of Safety must be complied with. Golden Rules

are non-negotiable.

1.5

STOPPING UNSAFE WORK

To stop the continuation of potentially unsafe work at the earliest possible stage the Control of

Work (CoW) Policy and this Procedure for Transportable Compressed Gas Cylinders make it

very clear that all personnel are obliged and have the authority to “STOP” the work that they

consider to be unsafe.

1.6

DEVIATIONS

This procedure is written in sufficient detail that it should be able to be applied consistently at all

sites

/ installations. There may still be the requirement for some local rules covering site /

installation specific logistical / administrative arrangements and local variations in responsibilities

to reflect differences in organisational arrangements. These local rules should not deviate from

the core processes within this document. Any form of deviation from this procedure, including

but not limited to local rules, shall be requested and authorised in accordance with SSOW,

Deviations from Regulations and Procedures procedure (Doc. No: AZSPU-HSSE-DOC-00011-

2).

1.7

DOCUMENT REVIEW

This document will be reviewed on an annual basis when users from the sites / installations will

have an opportunity to propose changes to the existing processes and procedures. The

document Technical Authority will be responsible for coordinating this review.

1.8

SSOW SPECIFIC CROSS REFERENCES

This procedure shall, where appropriate, be used in conjunction with this suite of AzSPU

Procedures referenced below.

Document Number

Title of Procedure

AZSPU-HSSE-DOC-00053-2

Hot Work Policy

AZSPU-HSSE-DOC-00061-2

Personal Protective Equipment

AZSPU-HSSE-DOC-00060-2

Permit To Work

AZSPU-HSSE-DOC-00064-2

Welding & Cutting

AZSPU-HSSE-DOC-00063-2

Task Risk Assessment

AZSPU-HSSE-DOC- 00002-2

BP Control of Work Standards

Further information available:

This document has been updated to include selected international standards referenced by

“The European Agreement Concerning the International Carriage of Dangerous Goods by

Road” (ADR). Azerbaijan became signatory to ADR in September 2000.

In addition to the referenced standards stated here, other requirements of ADR may be useful

as additional detailed guidance on e.g. cylinder securing and transport aspects.

Control Tier:

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Document Number: << AZSPU-HSSE-DOC-00014-2>>

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Procedure for Transportable Compressed Gas Cylinders

Page 5 of 20

1.9

LANGUAGE FACILITATION

Due to the various languages spoken at sites / installations, there is a necessity to assist all with

“an ease of understanding”. Therefore, the development and use of information tools are

available.

1.10 PROCEDURE SUMMARY

A Procedure Summary has been developed in a form of a leaflet, which can be carried by the

Line Supervisors while conducting their day-to-day work tasks. The Leaflet summarizes the

contents of this Procedure for Transportable Compressed Gas Cylinders. The Procedure

Summary can also be used as a guideline for Line Supervisors to deliver their daily toolbox talk.

(See Appendix A)

2 DEFINITIONS

Site Manager

Site Controller

OIM

Offshore Installation Manager

Area Authority

Performing Authority

ALARP

As Low as Reasonably Practicable

CoW

Control of Work

L2RA

Level 2 Risk Assessment

PTW

Permit to Work

SSOW

Safe System of Work

TRA

Task Risk Assessment

TBT

Toolbox Talk

gHSEr

Getting HSE Right

AzSPU

Azerbaijan Strategic Performance Unit

PSA

Production Sharing Agreement

MEWP

Mobile Elevated Work Platform

IRATA

Industrial Rope Access Trade Association

PSCM

Procurement Supply Chain Management

3 RESPONSIBILITIES

3.1 SITE MANAGER (SM) / SITE CONTROLLER (SC) / OFFSHORE INSTALLATION MANAGER (OIM)

Site Managers, Site Controllers and Offshore Installation Managers have overall responsibility

for the receipt, safe storage and use of gas cylinders on their site / Installation and shall ensure

that:

 Procedures for procurement, receipt, safe use and storage of gas cylinders are

established and observed on site

 Gas cylinders are procured and stored in accordance with these guidelines

 Receipt, storage and use of gas cylinders are carried out by suitably competent and

qualified personnel

 That no compressed gases, gas hoses or associated equipment is allowed or used on

site unless it has been designed and tested for use and, where necessary, is

Control Tier:

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Document Number: << AZSPU-HSSE-DOC-00014-2>>

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Procedure for Transportable Compressed Gas Cylinders

Page 6 of 20

accompanied by all relevant certification and in date test certificates

 That, where necessary, adequate records are maintained for all compressed gases, gas

hoses or associated equipment including, certification, examination and test reports.

 That Competent Person‟s are appointed to control the issue and inspection of

compressed gases, gas hoses or associated equipment

 That Competent Person‟s are appointed to control the use and storage of all compressed

gases, gas hoses and associated equipment

3.2 AREA AUTHORITY (AA)

The Area Authority shall be responsible for ensuring that the requirements of this procedure are

adhered to within his area of responsibility. He shall be responsible for ensuring:

 That the use of gas cylinders have been risk assessed and planned

 That all persons involved in the use of gas cylinders are instructed on the risks or

hazards associated with their work activity

 That regular inspection is performed on all works associated with gas cylinder activities to

confirm that conditions are suitable and sufficient and, that all personnel are in

compliance with this procedure

 That the Performing Authority performs Risk Assessments, and conducts Toolbox Talks

associated with the use of gas cylinders

3.3 PERFORMING AUTHORITY (PA)

Personnel involved in the use of compressed gas cylinders, gas hoses and associated

equipment shall ensure:

 That all equipment is inspected prior to use

 That all equipment is used according to manufacturers and suppliers instructions, best

recognised practice, and with regard to safe working practices, procedures and risk

assessments

 That all equipment in use is placed in safe positions and that all gas hoses are run to

avoid slip and tripping hazards

 That all equipment is inspected after use and returned to appropriate storage locations.

 That all equipment is isolated, disconnected and stored safely and correctly at the end of

each shift

3.4 PERSONS RESPONSIBLE FOR INSPECTION AND MAINTENANCE

Personnel responsible for the inspection and maintenance of gas hoses and associated

equipment shall ensure:

 That a record is kept of all equipment on site detailing issue, use, repair, inspection and

maintenance

 That all equipment on site is colour coded for ease of identification and, that details of the

colour code in present use is displayed around the facility and at the point of issue

 That all equipment on site is inspected and maintained to manufactures and suppliers

instructions and recommendations, best practice and, company policy

 That any equipment on site taken out of service is placed in secure quarantine to prevent

use

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Procedure for Transportable Compressed Gas Cylinders

Page 7 of 20

4 GAS CYLINDER PROCUREMENT

4.1 DESIGN, MANUFACTURE AND TESTING

Gas cylinders shall be designed, manufactured and tested according to recognised standards.

Generally accepted standards for refillable cylinders are:

 Seamless steel gas cylinders: ISO 9809,

EN 1964

 Welded cylinders for LPG:

ISO 22991, EN 1442

 Welded cylinders:

ISO 4706,

EN 13322

Or to a equivalent standard.

The cylinders shall be subject to initial certification as required by chapter 6.2.1.4 of Annex A to

“The European Agreement concerning the International Carriage of Dangerous Goods by Road

(ADR)” or alternatively according to ADR chapter 6.2.5.6. Cylinders conforming to EC directive

1999/36/EC and bearing the mark of conformity are also acceptable.

Cylinders shall be colour labelled and stamped in accordance with Tables 1a, 1b.

4.2 FILLING OF CYLINDERS

Gas cylinders shall only be filled by BP approved suppliers according to Procurement Supply

Chain Management (PSCM) practice requirements. Cylinders must only be filled with the type of

gas for which they are intended. In no case shall cylinders be filled in excess of the limit

permitted by ADR chapter 4.1, Packing instructions P200.

During filling, the filling centre shall carry out inspections in accordance with the requirements of

Regulation of

“Structure

(working principles) and Safe Operation of Pressure Vessels”

Moscow 1976 or/and one of the following standards:

 Liquefied gases:

EN 1919

 Compressed gases:

EN 1920

 LPG

EN 1439

4.3 PERIODIC INSPECTION

The cylinders shall be subject to periodic inspection at regular intervals not exceeding the

intervals required by ADR chapter 4.1, Packing instructions P200. The inspection shall be

carried out in accordance with one of the following standards:

 Seamless steel cylinders

EN 1968

 Welded LPG Cylinders

EN 1440

Or a equivalent standard.

The tests shall be carried out by a Testing and Certification body approved by BP.

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Procedure for Transportable Compressed Gas Cylinders

Page 8 of 20

5 RECEIPT OF CYLINDERS ON SITE

5.1 DESIGN, FABRICATION AND TESTING OF MULTIPLE CYLINDER TRANSPORT

Gas cylinders shipped to any BP site shall be thoroughly inspected by qualified and competent

personnel before being accepted.

Containers / Frames:

 The owner shall ensure that the transport containers are properly designed and tested

 The design should ensure the security of the bottles as they should not move and stress

the manifold piping during transport

 The structure of the container frame should be properly designed and fabricated to an

approved drawing. The drawings should detail the materials of construction, welding of

the members and coating required

 The lifting lugs shall be designed by a qualified competent person and should include the

details of welding and calculation of the strength of the lugs. There should be approved

drawings and calculations showing this detail

 The fabrication should be carried out to the drawings by a properly qualified and

approved contractor

 The container shall be marked with its unique number, the name of the owner and have

the appropriate Test Plate fitted

 Testing of the container shall be carried out by a properly certified test authority and their

plate shall be fitted to the tested unit

 Regular inspections are to be carried out at period not exceeding 6 months and the

inspection stamp applied to the Test Plate

 Inspected for corrosion, dents, general distortion, scorch marks, defacing, illicit repairs,

modification, or any defect

Manifolds, piping and Valves:

 The manifolds and piping shall be designed, fabricated and tested to an appropriate

international code. The owner should indicate the code used for the fabrication

 Design, fabrication and testing shall be properly documented and these documents held

by the owner

 Normally the design drawings should be appropriately approved by a competent

authority and these must be signed off and issued in a controlled manner

 Valves used in the construction shall be of an approved type and all relevant documents

such as, data sheets, material certification, test certification shall be held by the owner.

The threads and connections used should be shown on the drawings and should be to

internationally known standards

 The management of these small bore systems shall be controlled by a regular

maintenance and inspection regime. There is good guidance in documents such as

UKOOA “Guidelines for the management of Small bore Tubing Systems

 Inspected for, dents, general distortion, scorch marks, defacing, illicit repairs,

modification, or any defect

There is guidance to good design in documents such as BCGA Code of Practice CP4

“Industrial Gas Cylinder Manifolds and Gas Distribution Pipework”. It also indicates the codes

and standards used for all aspects of the design.

The requirements of ASME B16.3 “Chemical Plant and Refinery Piping” should be used as

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Procedure for Transportable Compressed Gas Cylinders

Page 9 of 20

guidance for test pressures and durations, it also gives guidance on design and stress

calculations.

Note: Defective cylinders shall be returned to the supplier / manufacturer.

Cylinders with faulty outlet valve connections, e.g., damaged threads, seized valve spindles,

etc., must be returned immediately to stores with a note stating the cylinder number, the nature

of the fault and whether the cylinder is charged.

Note: Under no circumstances may the user of the cylinder attempt any repair.

5.2 CYLINDER IDENTIFICATION

Compressed gas cylinders are painted in accordance with the National Colour Coding System

to properly identify their contents. The required colour codes for Azerbaijan and Georgia are

listed in Tables 1a and 1b. A cross reference to the European coding system defined by EN

1089-3:2004 is included.

Note 1:

If cylinders cannot be identified in accordance with this colour coding standard,

they shall not be accepted or used on site, but shall be returned to the supplier.

Note 2:

This colour coding system does not apply to Diving Gases which are covered

under separate standards and practices applicable to diving and sub-sea

operations.

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Procedure for Transportable Compressed Gas Cylinders

Page 10 of 20

Table 1a: Compressed Gas Cylinder Identification

ADR Classification

Marking according to local standard ¹

EN1089-3 ^{2, 3}

Classification

Gas name

Bottle

Label Text

Label

Stripe

Colour on

Number

code

Colour

shoulder

1002

Air

Black

COMPRESSED AIR

White

Bright green

(technical)

1046

Helium

Brown

HELIUM

White

Brown

1049

Hydrogen

Dark

HYDROGEN

Red

green

1072

Medical Oxygen

Blue

MEDICAL OXYGEN

Black

1066

Nitrogen

Black

NITROGEN

Yellow

Brown

Black

1072

Oxygen

Blue

OXYGEN

Black

White

1006

Technical Argon

Black

TECHNICAL ARGON

Dark blue

Dark green

Notes:

1. Reference: Regulation of “Structure (working principles) and Safe Operation of Pressure Vessels” - Moscow 1976

2. Note that according to EN 1089-3, colour coding applies to cylinder shoulders. Manufacturers may select the colour for the main cylinder body.

3. Cylinders coded in accordance with EN 1089-3 2004 requirements will be marked with “N” twice on the cylinder shoulders.

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Procedure for Transportable Compressed Gas Cylinders

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Table 1b: Liquefied and Dissolved Gas Cylinder Identification

ADR Classification

Marking according to local standard ¹

EN1089-3 ^{2, 3}

Classification

Gas name

Bottle

Label Text

Label

Stripe

Colour on

Number

code

Colour

shoulder

1001

Acetylene

White

ACETYLENE

Red

Maroon

1005

2TC

Ammonia

Yellow

AMMONIA

Black

Yellow

1011

Butane

Red

BUTANE

White

Red

1013

Carbon dioxide

Black

CARBON DIOXIDE

Yellow

Grey

1017

2TC

Chlorine

Khaki

CHLORINE

Green

Yellow

1965

Hydrocarbon gas

N.A.

mixture, liquefied,

n.o.s.

1053

2TF

Hydrogen Sulfide

White

HYDROGEN SULPHIDE

Red

Yellow

1978

Propane

Red

PROPANE

White

Red

1079

2TC

Sulphur Dioxide

Black

SULPHUR DIOXIDE

White

Yellow

Notes:

1. Reference: Regulation of “Structure (working principles) and Safe Operation of Pressure Vessels” - Moscow 1976

2. Note that according to EN 1089-3, colour coding applies to cylinder shoulders. Manufacturers may select the colour for the main cylinder body.

3. Cylinders coded in accordance with EN 1089-3 2004 requirements shall be marked with “N” twice on the cylinder shoulders.

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Procedure for Transportable Compressed Gas Cylinders

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5.3 CYLINDER MARKINGS

All cylinders shall be permanently and legibly labelled or stamped in accordance with the applied

standard. The marking shall include, at minimum, the following elements:

 Trade symbol of manufacturer

 Serial number

 Calculated quantity (tare) of empty mass

 Manufacturing date (month, year)

 Marking of inspection body, date of next inspection/test date, adjacent to the previous

inspection date (month, year)

 Service pressure (psi/bar)

 Test pressure (psi/bar)

 Capacity (cubic feet/litres)

All markings shall be stamped on the shoulder of cylinders near valves.

Note: Do not remove or change any numbers or marks stamped on cylinders. Any cylinders

that do not comply with this system or show tampered cylinder markings shall not be

accepted or used on site but shall be returned to the manufacturer/supplier.

6 CYLINDER STORAGE

6.1 ALL CYLINDERS

All cylinders shall be stored in a cool, well ventilated area, preferably in the open air and at least

3 metres (10 feet) from combustible materials.

Cylinders shall be chained or otherwise secured, in an upright position with valves shut and

valve caps in place when cylinders are not in use.

Cylinders shall not be stored in enclosed spaces such as workshops, accommodation or

enclosed modules on offshore installations.

All cylinders shall be stored away from:

 The direct rays of the sun or from radiant heat, e.g., flares

 Locations where the temperature may exceed 45C (113F)

 Locations exposed to adverse weather

Note: Weather protection shall be provided if required

 Possible sources of ignition

 Flammable materials

 Corrosive liquids

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Procedure for Transportable Compressed Gas Cylinders

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 Any direct contact with soft or damp ground, or any other location where water can

accumulate, thereby increasing exposure to the possible effects of corrosion

 Locations where cylinders are vulnerable to impact, e.g. fork lift trucks

Cylinders containing different gases must be stored separately and in accordance with

established spacing requirements. Oxygen cylinders shall be separated from the cylinders

containing flammable gas by at least 3 metres or by non-combustible barrier at least 2 metres

high.

Empty cylinders shall be marked with “EMPTY” or “MT”, and stored separately from full

cylinders.

Leaking cylinders or cylinders with leaking valves that cannot be shut off must be removed to a

safe area away from any possible source of ignition and drainage, where they shall be allowed

to vent off slowly until empty. Stores shall be advised of the fault.

Note: Propane and Butane are heavier than air and may therefore accumulate in dips and

hollows.

Note: Regardless of whether or not cylinders have been marked / empty, all cylinders shall

be handled and treated as if they were full.

6.2 OXYGEN CYLINDERS

Warning: Oils and greases are spontaneously combustible in the presence of oxygen.

Oxygen cylinders and their fittings, including hoses, must not be stored or used

where they can come into contact with oil or grease. This includes handling the

equipment with oily hands, gloves or rags.

Oxygen cylinders must be stored apart from fuel gas cylinders by a minimum distance of 3

metres (10 feet). Separation by using cylinders of non-flammable gases is acceptable. This

separation must be maintained.

The preferred practice is to store oxygen cylinders vertically, valve end up. However, it is

acceptable to store oxygen cylinders horizontally provided that:

 The stacks shall not exceed a maximum height of three cylinders

 The largest cylinders must be at the bottom

 The row must be securely wedged.

6.3 CYLINDERS FOR LIQUEFIED OR DISSOLVED GASES

Warning: Cylinders must not be stored or used in a horizontal position. All Acetylene

cylinders, full or empty, shall be stored and used in the vertical, valve end up

position.

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Procedure for Transportable Compressed Gas Cylinders

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6.4 DAMAGED CYLINDERS

Cylinders that may have been damaged in any way shall be returned to the supplier.

Leaking cylinders shall immediately be moved to a freely ventilated area away from any source

of ignition or places where leaking gas will become trapped.

7 CYLINDERS EXPOSED TO FIRE

In the event of gas cylinders being involved in a fire, they must be kept cool with water spray,

e.g., a fog nozzle, and where possible, removed to a safe area. Such cylinders must be

returned to the manufacturer for checking prior to re-use.

In the case of acetylene cylinders that have been so exposed, prolonged cooling is necessary

for several hours after the incident to prevent exothermic decomposition.

8 CYLINDER HANDLING

8.1 TRANSPORT

The transport shall, at minimum, comply with the national regulations applicable for the relevant

mode of transport. The following shall be observed:

 Gas cylinders shall only be transported in properly ventilated cylinder containers

 Suitable valve protection caps shall be fitted

 Ensure cylinders are securely stowed to prevent moving, e.g. by use of baskets

 Cylinders shall be stowed in the upright position unless instructions for transport

specifically say otherwise

 Do not let gas cylinders project beyond the sides or end of a vehicle

8.2 LIFTING

If cylinders are lifted by crane, a suitable cradle or similar device should be used.

Trolleys should not be used as lifting cradles unless they have been specifically designed for

that purpose and are certified and checked on a six monthly basis.

Cylinders shall not be lifted using:

 The cylinder valves

 Chain or wire rope slings (these can allow the cylinder to slip during lifting)

 Lifting magnets

8.3 MOVEMENT OF CYLINDERS ON SITE

Note: Cylinders shall not be dropped, dragged, rolled, used as supports or for any other

purpose than the storage and transport of gas, and must be protected from damage at all

times.

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Procedure for Transportable Compressed Gas Cylinders

Page 15 of 20

8.3.1 Cylinder Trolleys

Cylinders shall be transferred to, and moved within, the working area on trolleys specifically

designed for that purpose, or in suitable containers providing stable and secure positioning of

the cylinders.

All valves must be closed before a cylinder is moved and, if the correct trolley is not being used,

regulators and hoses should be detached from the cylinders.

8.3.2 Electric Cables

Cylinders and gas hoses shall not be allowed to come into contact with current carrying wires.

Therefore:

 Special attention should be paid to the places where electro-welding and gas burning of

metals are carried out simultaneously

 The distance from oxygen or fuel gas cylinders to electro-welding cables shall be not less

that 1 m

When in use, hoses should be protected from damage, and laid out in such a manner as to

avoid being a tripping hazard.

9 CYLINDER USE

Many of the specific uses of gases will vary from gas to gas but there are several points that

apply to all of them:



Do not use a cylinder that appears to be damaged or defective in any way



Keep the cylinders away from operations that create sparks, heat, fire and electrical

circuits



Do not use oil or grease on cylinders or handle them with oily hands or gloves. Do not let

oxygen spray on an oily or greasy surface, or on your clothes



Use cylinders in ventilated areas only



Keep cylinders secured upright in cylinder racks



Open valves by hand, not with a wrench or other tool. If they cannot be opened by hand,

notify the supplier/manufacturer



Do not tamper with safety devices



Check that the regulator is rated for the correct pressure and service, is in date, stamped,

and does not show signs of damage or temporary repair (e.g. jointing compound or tape)



If a cylinder has a leaky valve or fitting which cannot be stopped by closing the valve, the

cylinder must be taken outdoors away from sources of ignition. Tag the cylinder as in bad

order and promptly notify the supplier. Do not try to fix a leaking cylinder or valve. Dented

cylinders should never be used



Ensure that all equipment, including hosing / tubing, for use in oxygen service is designed

for this purpose and is completely degreased and dust free before each use



Always open valves slowly. If a valve cannot be opened by hand with the key or hand

wheel provided, the cylinder shall be returned to the supplier / manufacturer. Do not

attempt to force the valve open using wrenches or other hand tools



Do not empty gas cylinders completely. If appropriate, cylinders should be fitted with

residual pressure valves

(non-return valves) to prevent backflow of air or other

contaminants

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Procedure for Transportable Compressed Gas Cylinders

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10 REFERENCES

Standard No

Title

Transportable gas cylinders - Gas cylinder identification

EN 1089-3, edition 2, 2004

(excluding LPG) - Part 3: Colour coding

Transportable refillable welded steel cylinders for liquefied

EN 1439, edition 1, 1997

petroleum gas (LPG) - Procedure for checking before, during and

after filling

Transportable refillable welded steel cylinders for liquefied

EN 1440, edition 1, 1997

petroleum gas (LPG) - Periodic re-qualification (Corrigendum

AC:1999 incorporated

Transportable refillable welded steel cylinders for liquefied

EN 1442, edition 1, 1999

petroleum gas (LPG) - Design and construction (Corrigendum

AC:1999 incorporated

Transportable gas cylinders - Cylinders for liquefied gases

EN 1919, edition 1, 2000

(excluding acetylene and LPG) - Inspection at time of filling

Transportable gas cylinders - Cylinders for compressed gases

EN 1920, edition 1, 2000

(excluding acetylene) - Inspection at time of filling

Transportable gas cylinders - Specification for the design and

construction of refillable transportable seamless steel gas

EN 1964-1, edition 1, 1999

cylinders of water capacities from 0,5 litre up to and including 150

litres - Part 1: Cylinders made of seamless steel with an Rm value

of less than 1100 Mpa

Transportable gas cylinders - Specification for the design and

construction of refillable transportable seamless steel gas

EN 1964-2, edition 1, 2002

cylinders of water capacities from 0,5 litre up to and including 150

litres - Part 2: Cylinders made of seamless steel with an Rm value

of 1100 MPa and above

Transportable gas cylinders - Specification for the design and

construction of refillable transportable seamless steel gas

EN 1964-3, edition 1, 2000

cylinders of water capacities from 0,5 litre up to and including 150

litres - Part 3: Cylinders made of seamless stainless steel with an

Rm value of less than 1100 MPa

Transportable gas cylinders - Periodic inspection and testing of

EN 1968, edition 1, 2002

seamless steel gas cylinders

Transportable gas cylinders - Refillable welded steel gas cylinders

EN 13322-1, edition 1, 2003

- Design and construction - Part 1: Carbon steel

Transportable gas cylinders - Refillable welded steel gas cylinders

EN 13322-2, edition 1, 2003

- Design and construction - Part 2: Stainless steel

ISO 4706:1989, edition 1, 1989

Refillable welded steel gas cylinders

Gas cylinders -- Refillable seamless steel gas cylinders -- Design,

construction and testing -

ISO 9809-1:1999, edition 1, 1999

Part 1: Quenched and tempered steel cylinders with tensile

strength less than 1 100 MPa

Part 2: Quenched and tempered steel cylinders with tensile

ISO 9809-2:2000, edition 1, 2000

strength greater than or equal to 1 100 MPa

ISO 9809-3:2000, edition 1, 2000

Part 3: Normalized steel cylinders

Gas cylinders -- Transportable refillable welded steel cylinders for

ISO 22991:2004, edition 1, 2004

liquefied petroleum gas (LPG) -- Design and construction

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Procedure for Transportable Compressed Gas Cylinders

Page 17 of 20

APPENDIX A: PROCEDURE SUMMARY

Area Authority (AA)

¾ That all equipment on site is inspected and maintained to

manufactures and suppliers instructions and

The Area Authority shall be responsible for ensuring that the

recommendations, best practice and, company policy

TRANSPORTABLE COMPRESSED

requirements of this procedure are adhered to within his area

¾ That any equipment on site taken out of service is placed in

of responsibility. He shall be responsible for ensuring:

GAS CYLINDERS

secure quarantine to prevent use

¾ That the use of gas cylinders have been risk assessed

and planned

Receipt of Cylinders on Site

Purpose

¾ That all persons involved in the use of gas cylinders

are instructed on the risks or hazards associated with

Gas cylinders shipped to any BP site shall be thoroughly inspected

This procedure specifies the requirements necessary for the safe

their work activity

by qualified and competent personnel before being accepted.

procurement, handling, use, storage, and transportation of gas

¾ That regular inspection is performed on all works

cylinders for compressed gases and gases liquefied under

associated with gas cylinder activities to confirm that

Containers / Frames:

pressure.

conditions are suitable and sufficient and, that all

The owner shall ensure that the transport containers are

personnel are in compliance with this procedure

properly designed and tested

Scope

¾ That the Performing Authority performs Risk

The design should ensure the security of the bottles as they

The contents of this procedure apply to gas cylinders that contain

Assessments, and conducts Toolbox Talks associated

should not move and stress the manifold piping during

pressures greater than 10 psi (0.5 bar) on all BP managed and

with the use of gas cylinders

transport

owned sites in Azerbaijan and Georgia.

The structure of the container frame should be properly

Performing Authority (PA)

designed and fabricated to an approved drawing. The

Responsibilities

drawings should detail the materials of construction,

Personnel involved in the use of Compressed Gases

welding of the members and coating required

Site Manager

(SM)

/ Site Controller

(SC)

/ Offshore

Cylinders, Gas Hoses and Associated Equipment shall

The lifting lugs shall be designed by a qualified competent

Installation Manager (OIM)

ensure:

person and should include the details of welding and

¾ That all equipment is inspected prior to use

Site Managers, Site Controllers and Offshore Installation

calculation of the strength of the lugs. There should be

¾ That all equipment is used according to manufacturers

Managers have overall responsibility for the receipt, safe

approved drawings and calculations showing this detail

and suppliers instructions, best recognised practice,

storage and use of gas cylinders on their site / Installation

The fabrication should be carried out to the drawings by a

and with regard to safe working practices, procedures

and shall ensure that:

properly qualified and approved contractor

and risk assessments

¾ Procedures for procurement, receipt, safe use and

The container shall be marked with its unique number, the

¾ That all equipment in use is placed in safe positions

storage of gas cylinders are established and

name of the owner and have the appropriate Test Plate

and that all gas hoses are run to avoid slip and tripping

observed on site

fitted

hazards

¾ Gas cylinders are procured and stored in accordance

Testing of the container shall be carried out by a properly

¾ That all equipment is inspected after use and returned

with these guidelines

certified test authority and their plate shall be fitted to the

to appropriate storage locations

¾ Receipt, storage and use of gas cylinders are carried

tested unit

¾ That all equipment is isolated, disconnected and

Regular inspections are to be carried out at period not

out by suitably competent and qualified personnel

¾ That no compressed gases, gas hoses or associated

stored safely and correctly at the end of each

exceeding 6 months and the inspection stamp applied to

equipment is allowed or used on site unless it has

the Test Plate

shift

been designed and tested for use and, where

Inspected for corrosion, dents, general distortion, scorch

necessary, is accompanied by all relevant

marks, defacing, illicit repairs, modification, or any defect

Persons Responsible for Inspection and Maintenance

certification and in date test certificates

¾ That, where necessary, adequate records are

Manifolds, piping and Valves:

Personnel responsible for the inspection and maintenance of

maintained for all compressed gases, gas hoses or

¾ The manifolds and piping shall be designed, fabricated and

gas hoses and associated equipment shall ensure:

associated equipment including, certification,

tested to an appropriate international code. The owner

¾ That a record is kept of all equipment on site detailing

examination and test reports.

should indicate the code used for the fabrication

issue, use, repair, inspection and maintenance

¾ That Competent Person‟s are appointed to control

¾ Design, fabrication and testing shall be properly

¾ That all equipment on site is colour coded for ease of

the issue and inspection of compressed gases, gas

documented and these documents held by the owner

identification and that the detail of the colour code in

hoses or associated equipment

present use is displayed around the facility and at the

¾ That Competent Person‟s are appointed to control

point of issue

the use and storage of all compressed gases, gas

hoses and associated equipment

¾ Normally the design drawings should be appropriately

Control Tier:

<<2>>

Revision Date: 25 January 2008

Document Number: << AZSPU-HSSE-DOC-00014-2>>

Print Date: 7/24/2010

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Procedure for Transportable Compressed Gas Cylinders

Page 18 of 20

approved by a competent authority and these must

Many of the specific uses of gases will vary from gas to gas

be signed off and issued in a controlled manner

All cylinders shall be stored in a cool, well ventilated area in

but there are several points that apply to all of them:

¾ Valves used in the construction shall be of an

open air and at least 3m from combustible materials.

Do not use a cylinder that appears to be damaged or

approved type and all relevant documents such as,

defective in any way

data sheets, material certification, test certification

Cylinders shall be chained or secured, with valves shut and

Keep the cylinders away from operations that create

shall be held by the owner. The threads and

valve caps in place when not in use.

sparks, heat, fire and electrical circuits

connections used should be shown on the drawings

Do not use oil or grease on cylinders or handle them with

and should be to internationally known standards

All cylinders shall be stored away from direct sun light,

oily hands or gloves. Do not let oxygen spray on an oily or

¾ The management of these small bore systems shall

where temperatures exceed 45C, locations exposed to

greasy surface, or on your clothes

be controlled by a regular maintenance and

adverse weather, possible sources of ignition, corrosive

Use cylinders in ventilated areas only

inspection regime. There is good guidance in

liquids, or damp ground where water can accumulate.

Keep cylinders secured upright in cylinder racks

documents such as UKOOA

“Guidelines for the

Open valves by hand, not with a wrench or other tool. If

management of Small bore Tubing Systems

Oxygen Cylinders

they cannot be opened by hand, notify the

¾ Inspected for, dents, general distortion, scorch

supplier/manufacturer

marks, defacing, illicit repairs, modification, or any

Oxygen cylinders must be stored away from flammable gas

Do not tamper with safety devices

defect

cylinders by a minimum distance of 3m.

Check that the regulator is rated for the correct pressure

and service, is in date, stamped, and does not show signs

There is guidance to good design in documents such as BCGA

Oxygen cylinders and their fittings, including hoses, must not

of damage or temporary repair (e.g. jointing compound or

Code of Practice CP4 “Industrial Gas Cylinder Manifolds and

be stored or used where they can come into contact with oil

tape)

Gas Distribution Pipework”. It also indicates the codes and

or grease. Oils and greases are spontaneously combustible

If a cylinder has a leaky valve or fitting which cannot be

standards used for all aspects of the design.

in the presence of oxygen.

stopped by closing the valve, the cylinder must be taken

outdoors away from sources of ignition. Tag the cylinder as

The requirements of ASME B16.3 “Chemical Plant and Refinery

Transportation of Cylinders

in bad order and promptly notify the supplier. Do not try to

Piping” should be used as guidance for test pressures and

fix a leaking cylinder or valve. Dented cylinders should

durations, it also gives guidance on design and stress

Gas cylinders shall only be transported in properly ventilated

never be used

calculations.

cylinder containers, with valve caps fitted.

Ensure that all equipment, including hosing / tubing, for use

in oxygen service is designed for this purpose and is

Note: Defective cylinders shall be returned to the supplier /

Ensuring cylinders are securely stowed to prevent moving.

completely degreased and dust free before each use

manufacturer.

Cylinders should be stowed in an upright position unless

Always open valves slowly. If a valve cannot be opened by

instructions for transport specifically say otherwise.

hand with the key or hand wheel provided, the cylinder shall

Cylinders with faulty outlet valve connections, e.g., damaged

be returned to the supplier / manufacturer. Do not attempt

threads, seized valve spindles, etc., must be returned

Lifting of Cylinders

to force the valve open using wrenches or other hand tools

immediately to stores with a note stating the cylinder number, the

If cylinders are lifted by crane, a suitable cradle should be

¾ Do not empty gas cylinders completely. If appropriate,

nature of the fault and whether the cylinder is charged.

used. If a trolley is used as a cradle during lifting, care

cylinders should be fitted with residual pressure valves

should be taken to ensure that its base is strong enough to

(non-return valves) to prevent backflow of air or other

Note: Under no circumstances may the user of the cylinder

take the weight of the cylinders.

contaminants

attempt any repair.

NOTE: Trolleys should not be used as lifting cradles unless

Cylinder Identification

they have been specifically designed for that purpose.

Compressed gas cylinders are painted in accordance with the

Movement of Cylinders at Sites / Installations

National Colour Coding System to properly identify their

contents. The required colour codes for Azerbaijan and Georgia

Cylinders should be transferred to, and within, the working

are listed in Table 1 of this procedure.

area on trolleys specifically designed for that purpose, or in

NOTE: If cylinders cannot be identified in accordance with this

suitable containers providing stable and secure positioning

colour coding standard, they shall not be accepted or used on

of cylinders.

sites / installations and shall be returned to the supplier.

Cylinder Use

Gas Cylinder Storage

Control Tier:

<<2>>

Revision Date: 25 January 2008

Document Number: << AZSPU-HSSE-DOC-00014-2>>

Print Date: 7/24/2010

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Procedure for Transportable Compressed Gas Cylinders

Page 20 of 20

Revision/Review Log

Revision Date

Authority

Custodian

Revision Details

08 February 2005

Alan McNulty

Esmira

Initial Issue as controlled document

(CHSSE

Akhundova

Manager)

25 January 2008

Alan McNulty

Abbas Islamov

General:

(AzSPU CH&S

(Central Safety

Throughout the procedure the document

Manager)

TL)

numbering for referred procedures has been

changed from UNIF to AzSPU.

Section 1. Introduction:

1.2 Scope; Wording changes. The following are

inclusion to Section 1. They are: 1.3 Legislation

& Standards, 1.4 Company Requirements, 1.5

Stopping Unsafe Work, 1.6 Deviations, 1.7

Document Review, 1.8 SSOW Specific Cross

References (new doc control numbers), 1.9

Language Facilitation, 1.10 Procedure Summary

Section 2. Definitions:

New section

Section 3. Roles & Responsibilities:

3.1 Site Manager; Site Controller and Offshore

Installation Manager added. 4 additional bullet

points added. 3.2 Area Authority; 4 bullet points

added. 3.3 Performing Authority; This is an

addition to the procedure. 3.4 Persons

Responsible for Inspection and Maintenance;

This is also an addition to the procedure.

Section 4. Gas Cylinder Procurement:

4.2 Filling of Cylinders; Procurement Supply

Chain Management (PSCM) added to first

paragraph

Section 5. Receipt of Cylinders on Site:

4.1 Cylinder Inspection has been change to

Design, Fabrication and Testing of Multiple

Cylinder Transport

Appendices.

2 new appendices included to the document as

follows:

Appendix A: Procedure Summary

Appendix B: Feedback & Improvement

Suggestions

Control Tier:

<<2>>

Revision Date: 25 January 2008

Document Number: << AZSPU-HSSE-DOC-00014-2>>

Print Date: 7/24/2010

PAPER COPIES ARE UNCONTROLLED. THIS COPY VALID ONLY AT THE TIME OF PRINTING. THE CONTROLLED

VERSION OF THIS DOCUMENT CAN BE FOUND AT http://docs.bpweb.bp.com/dkazspu/component/hssesms

Control Of Over Control Of Over-rides, Inhibits

Page 2 of 18

And Alarm Disables

Table of Contents

Introduction

1.1

Purpose

1.2

Deviations

1.3

Scope

1.4

Document Review

1.5

SSOW Specific Cross references

Roles and Responsibilities

2.1

Responsible Person (RP)

2.2

Performing Authority (PA)

2.3

Site Managers (SM) / Site Controllers (SC) / Offshore Installation

Managers (OIM)

Over-Ride / Inhibit Definition

Procedure

Categorisation Of Over-rides / Inhibits

5.1

Category A

5.2

Category B

5.3

Category C

Application Of Over-Rides / Inhibits

Removal Of Over-Rides / Inhibits

Audit Of Over-Rides / Inhibits

Alarm Disabling

Registers and Review Log

Appendix A - Abbreviations and Definitions

Appendix B - Applicable to

Appendix C - Over-Rides and Inhibits Register

Appendix D - Alarm Disables Register

Appendix E - Over-Rides and Inhibits and Alarm Disables Review Log

Appendix F - Audit Checklist

Control Tier:

<<2>>

Revision Date: <<28 December 2004>>

Document Number: << AZSPU-HSSE-DOC-00015-2>>

Print Date: 7/24/2010

PAPER COPIES ARE UNCONTROLLED. THIS COPY VALID ONLY AT THE TIME OF PRINTING. THE

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Control Of Over Control Of Over-rides, Inhibits

Page 3 of 18

And Alarm Disables

Introduction

1.1

Purpose

The purpose of this document is to describe the roles and responsibilities for all

personnel involved in the Risk Assessment, Application, and Sanction of trip over-

rides/inhibits during operation and maintenance activities. To ensure the audit trail for

the application, sanction, approval, removal of trip over-rides or inhibits. To ensure that

the application of plant overrides is managed and assessed to reduce risks to a level

that is as low as reasonably practicable.

There are numerous examples of accidents and incidents in oil, gas and condensate

processing and transportation activities due to the uncontrolled use of trip over-

rides/inhibits on running plant. It is equally true that in some instances, it is necessary

to use over-rides/inhibits as a temporary means of maintaining operation and

conducting essential maintenance intervention activity. This is acceptable only with the

appropriate controls in place to reduce any risks generated to As Low As Reasonably

Practicable.

Additionally this document describes the procedure for the disabling of control systems

alarms.

1.2

Deviations

The procedures are written in sufficient detail that they should be able to be applied

consistently at all sites. There may still be the requirement for some local rules covering

site-specific logistical/administrative arrangements and local variations in

responsibilities to reflect differences in organisational arrangements. These local rules

should not deviate from the core processes within this document. Any form of deviation

from this procedure, including but not limited to local rules, shall be requested and

authorised in accordance with the SSOW Deviations from Regulations and Procedures

procedure (Doc. No. UNIF-HSE-PRO-101)

1.3

Scope

This procedure applies to ESD, Fire and Gas, Software and all hard-wired over-

rides/inhibits and alarms, on all existing and new Caspian region assets.

1.4

Document Review

This document will be reviewed on an annual basis when users from the sites will have

an opportunity to propose changes to the existing processes and procedures. The

document Technical Authority will be responsible for coordinating this review.

Control Tier:

<<2>>

Revision Date: <<28 December 2004>>

Document Number: << AZSPU-HSSE-DOC-00015-2>>

Print Date: 7/24/2010

PAPER COPIES ARE UNCONTROLLED. THIS COPY VALID ONLY AT THE TIME OF PRINTING. THE

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Control Of Over Control Of Over-rides, Inhibits

Page 5 of 18

And Alarm Disables

Roles and Responsibilities

The key roles and responsibilities within the control of over-rides and inhibits and alarm

disables are described below.

2.1

Responsible Person (RP)

This shall be the person designated by OIM/Site Controller as accountable for the

management of overrides and alarm disables.

2.2

Performing Authority (PA)

This will be any person who is defined as a Competent Person by systems in use on

his particular work site for application of the override and alarm disables.

2.3

Site Managers (SM) / Site Controllers (SC) / Offshore Installation Managers

(OIM)

Offshore Installation Managers/ Site Managers and Site Controllers are responsible for:

 Overall operation of the Control of inhibits on their site and ensuring that the

procedures described in this document are consistently followed.

 Ensuring that the Control of inhibits process is subject to regular monitoring and

auditing, acting upon the results of these audits to maintain the integrity of the

system and proposing any recommendations for system improvement.

 Authorising the Responsible Person (RP) and Performing Authority as competent

to carry out their duties, as described in this document, and ensuring that a

controlled log of all authorised personnel is maintained.

Over-Ride / Inhibit Definition

Over-rides and Inhibits are all hard wire links, software over-rides/inhibits, software

force, DCS override and all forms of disabling protective devices.

Control Tier:

<<2>>

Revision Date: <<28 December 2004>>

Document Number: << AZSPU-HSSE-DOC-00015-2>>

Print Date: 7/24/2010

PAPER COPIES ARE UNCONTROLLED. THIS COPY VALID ONLY AT THE TIME OF PRINTING. THE

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Control Of Over Control Of Over-rides, Inhibits

Page 6 of 18

And Alarm Disables

Procedure

The application of any overrides, inhibits, links etc may be applied after due

consideration and consultation to assess the risks. This may take the form of a permit,

a formal level 2 risk assessment or an ORA (Operational Risk Assessment) but the RP

must ensure that there are valid reasons to effect any disablement. The results and

outcome of any assessment must be documented and retained for future reference.

The RP must also record and document any subsequent amendments to the

assessment that were not originally considered.

No override or inhibits will be put into place without an appropriate level of risk

assessment, to ensure that appropriate control remains and that safety is not

compromised. The assessment must take account of the possible cumulative effect of

existing overrides or inhibits.

The assessment should detail any particular control or mitigation measures that need

to be in place, in addition reference should be made to the future resolution of the

problem that has caused the over-ride to be applied, ie, MOC (Management of Change

Procedure), etc. It must also consider the duration that the disablement shall be in

place for. This RA must be conducted by suitably qualified and experienced operations

and maintenance staff, HSE and or specialist input shall be sought where relevant.

Risk assessments should all be registered and must be retained and be readily

accessible, for Auditing of the process.

After seven days the override, inhibit is deemed to be long term and will be subject to

the audit process. After 28 days the RP must be able to demonstrate that a process to

remove the disablement is underway.

All personnel involved in the use of the PTW shall be both trained and proven to be

competent to the appropriate level.

Control Tier:

<<2>>

Revision Date: <<28 December 2004>>

Document Number: << AZSPU-HSSE-DOC-00015-2>>

Print Date: 7/24/2010

PAPER COPIES ARE UNCONTROLLED. THIS COPY VALID ONLY AT THE TIME OF PRINTING. THE

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Control Of Over Control Of Over-rides, Inhibits

Page 7 of 18

And Alarm Disables

Categorisation Of Over-rides / Inhibits

There are three primary categories of over-ride

5.1

Category A

(To prevent production loss/process upset)

These are classified as over-rides inhibits which are applied:

To maintain production / drilling / pumping / transportation activities.

To ensure that online maintenance operations do not trip any running plant/equipment.

To allow the plant start up from a shutdown condition.

To carry out any commissioning function checks that may be required.

To apply a Category A over-ride the following steps must be adhered to:

The PA must seek authorisation from the RP. The RP may only give permission after

he has conducted the appropriate level of Risk Assessment.

Note:

Drilling areas which are not the responsibility of the Senior Tool pusher for the

purposes of override tracking, will be captured by the RP, and all overrides will be

recorded in the Inhibit register similar to all other over-rides/inhibits. Drilling areas,

which are the responsibility of the Senior Toolpusher, must have a robust system in

place for the control of overrides. Regular communication between the RP and Senior

Toolpusher must take place to ensure all possible conflicts are addressed

5.2

Category B

(Safety systems where no mitigation is available)

These are classified as over-rides / inhibits which are applied:

To safety critical items and covers, but is not limited to: riser valves; sub-sea valves;

down hole safety valves; ESDV’s and ESD systems.

To apply a Category B over-ride the following steps must be adhered to:

Any overrides to this system will require a risk assessment approved by the OIM/Site

Controller.

In the case of routine maintenance activities the risk assessment will be by a specific

work permit or work control certificate for that activity. This ensures any override is

applied and removed in accordance with that specific work activity.

In all other cases a specific level

2 risk assessment approved by the OIM/Site

Controller is to be recorded on each occasion the override is put in place and logged.

Note:

Drilling areas which are not the responsibility of the Senior Tool pusher for the

purposes of override tracking, will be captured by the RP, and all overrides will be

recorded in the Inhibit register similar to all other over-rides/inhibits. Drilling areas,

Control Tier:

<<2>>

Revision Date: <<28 December 2004>>

Document Number: << AZSPU-HSSE-DOC-00015-2>>

Print Date: 7/24/2010

PAPER COPIES ARE UNCONTROLLED. THIS COPY VALID ONLY AT THE TIME OF PRINTING. THE

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Control Of Over Control Of Over-rides, Inhibits

Page 8 of 18

And Alarm Disables

which are the responsibility of the Senior Toolpusher, must have a robust system in

place for the control of overrides. Regular communication between the RP and Senior

Toolpusher must take place to ensure all possible conflicts are addressed.

5.3

Category C

(Safety systems where mitigations are possible)

These are classified as over-rides / inhibits which are applied:

To the Fire and Gas System.

To apply a Category C over-ride the following steps must be adhered to:

The PA must seek authorisation from the RP. The RP may only give permission after

he has conducted the appropriate level of Risk Assessment.

However, in instances where excessive loss of coverage may occur, particular

consideration must be given to additional mitigation measures to provide alternative

means of detection.

If any areas are to be inhibited for particular tests, sampling or work routines then an

assessment for that task must be carried out. This may take the form of a procedure, a

permit or a formal risk assessment and the overrides must be recorded on the Over-

ride/Inhibit Register.

Note:

Drilling areas which are not the responsibility of the Senior Tool pusher for the

purposes of override tracking, will be captured by the RP, and all overrides will be

recorded in the Inhibit register similar to all other over-rides/inhibits. Drilling areas,

which are the responsibility of the Senior Toolpusher, must have a robust system in

place for the control of overrides. Regular communication between the RP and Senior

Toolpusher must take place to ensure all possible conflicts are addressed.

Control Tier:

<<2>>

Revision Date: <<28 December 2004>>

Document Number: << AZSPU-HSSE-DOC-00015-2>>

Print Date: 7/24/2010

PAPER COPIES ARE UNCONTROLLED. THIS COPY VALID ONLY AT THE TIME OF PRINTING. THE

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Control Of Over Control Of Over-rides, Inhibits

Page 9 of 18

And Alarm Disables

Application Of Over-Rides / Inhibits

Application of over-rides/inhibits will be the responsibility of the PA. He will also be

responsible for updating of the comments section of the Over-ride/Inhibit Register, and

shall make reference to the specific Risk Assessment that applies. This will form part of

the shift handover report. The RP shall review the register and sign the review log at

every shift handover.

Hardwired over-rides/inhibits will be controlled by the normal Work Control Certificate

or permit and risk assessment procedure, sanctioned by the RP and recorded on an

Isolation Certificate. An ICC label must be displayed on the outside of a cabinet along

with any labels attached to the cable.

Removal Of Over-Rides / Inhibits

Over-rides/inhibits should be removed from the systems as quickly as possible, when

the reason for its application has been resolved

Audit Of Over-Rides / Inhibits

A process shall be conducted on a weekly basis to perform an audit of the over-ride

for the over-rides/inhibits being in place. A suitably qualified and competent person,

designated by the OIM/Site Controller, shall conduct this audit. The weekly audit shall

also include a check of the entries over-ride log against actual inhibits applied to the

systems to ensure all over-rides are accountable for and with valid reasons for being in

place.

The RP’s responsibility is to ensure that there is a process in place to ensure that all

long term requirements for over-rides/inhibits are engineered out as rapidly and

effectively as possible.

In addition to the weekly Audit by OIM/Site controller, there will be an Annual Audit.

Purpose of the Annual audit will be to ensure compliance of the use of over-rides and

inhibits with this procedure.

The HSE Manager or Nominee, and the Control Systems technical Authority or

Nominee shall carry out the Annual Audit.

Control Tier:

<<2>>

Revision Date: <<28 December 2004>>

Document Number: << AZSPU-HSSE-DOC-00015-2>>

Print Date: 7/24/2010

PAPER COPIES ARE UNCONTROLLED. THIS COPY VALID ONLY AT THE TIME OF PRINTING. THE

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Military reference books and manuals (2009-2023, Volume 5) - page 30