Document No:
Chapter –8 Fuel & Lubricants
Version No: 1.0-d0
Date Issued: dd/mm/yyyy
Document Title: MANUAL MAINTENANCE FOR DIESEL LOCOMOTIVES
Revised 2013
Printed: 2015/03/08
Page 160 of 303
8.5.2
Pump Capacity: The following capacities are recommended:
a. 2000 – 2500 liters per minute at major RCDs and mainline servicing points
where fast fuelling rates are required.
b. 1000-1500 liters per minutes for smaller RCDs and shunting loco fuelling
points.
8.5.3
Number of Pumping Units:
Either separate pumps can be provided for unloading fuel from tank wagons into
storage tanks and for feeding fuel from the storage tanks to the locos or the same
pumping unit can be so connected that it can be used either for unloading fuel from
tank wagons or for feeding the locos from the storage tanks. Whereas at bigger
RCDs, separate pumping units would be justified, at small consumption RCDs one
unit to serve both the purposes is all that is needed.
8.5.4
Housing of Pumping Equipments: Pumping equipments should be protected
against bad weather and also unnecessary meddling by unauthorized persons. The
pump house should also have a proper office for the RCD in-charge and for keeping
records concerning the RCD.
8.5.5
Pumping Plant Accessories:
8.5.5.1 In addition to the pumps, the proper handling of diesel fuel requires use of certain
accessories such as fuel flow-meters, filters and strainers, air eliminators,
electrical facilities, etc. These are described in brief below:
8.5.5.2 Fuel Meters:
a. They are necessary to gauge the amount of fuel oil supplied each time. Fuel meter
is necessary between the storage tanks and the loco being fuelled to record the fuel
supply made to each individual diesel loco. Fuel meter is required to be installed in
motor room. Since in some cases simultaneous fuelling of two locos (e.g. one in Up
direction and other in Dn direction) may be required, two fuelling system with both
having separate pump and separate pipeline may be provided. Both these separate
pipe lines should be provided with fuel metering arrangements. It is good practice
to have a common pipe also which is connected to these two independent fuelling
pipes. This common outlet shall also be provided with fuel meter. This common
outlet can be used in case any of the two flow meters become defective. The fuel
flow-meter should have a rated capacity somewhat greater than the maximum
pumping rate. Fuel oil meters are generally of the positive displacement type and
should cause little resistance to flow of oil. Unless provided with automatic
temperature compensation, meter readings will require correction for oil
temperature.
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