Fig. No.
24
FUEL TANK ARRANGEMENT
engine fuel
inlet and
return
manifolds
union
coupling
fuel pipe
straight
coupling
feed
return
flexible
pipes
diesel
pump set
fuel tank
vent assy.
lift lug
½
" nipple
½
" npt ball valve
½
" npt plug
4" nipple
2" nipple
½
" nipple
fuel from engine
ø2.5" removable leg
minimum 500mm
expansion
volume 5%
sump
volume 5%
fuel filling
drain
fuel gauge
fuel to engine
19
of
46
Subject to change without prior notice
INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS
FIRE PUMPS - NF-VTP SERIES
Ref. No. NFVTP-IOM/
2016
/V.
02
5.14. Fuel Tank Arrangement
If the fuel tank is supplied separately, it is intended to be positioned it in a safe location with convenient filling access
and giving short and direct fuel line runs.
When a fuel tank stand is supplied it is normally designed to be fixed on a floor having the same level as the pump
house. If the stand is not supplied or when special conditions apply, reference should be made to the diesel engine
manufacturer’s instructions for guidance on the correct level to mount the fuel tank. Fuel and vent pipe must be
adequately supported. It is important that fire pump engines should be provided with gravity fuel feed hence fuel tank
bypass valves in the cooling line to enable the flow of water to the engine.
The raw water strainers (one on the normal line and another one on the bypass line) should be cleaned weekly, to
remove sediment.
Engine cooling line - outlet discharge location:
An outlet shall be provided for the waste water line from the heat exchanger, and the discharge line shall not be less
than one size larger than the Inlet Line.
The wastewater line piping must be sized to handle the flow of cooling water leaving the discharge outlet. The Size of
the diesel Engine drive will determine the size of the piping and drain. Hence the engine data sheet should be referred
to determine the required flow rate of the cooling water to keep the engine temperature at the correct level; and the
wastewater line piping must be sized accordingly.
The outlet line shall be as short as practical, shall provide discharge into a visible open waste cone, and shall have no
valves in it.
When the waste outlet piping is longer than
15
ft. (
4
.
6
m) and/or its outlet discharge are more than
4
ft. (
1
.
2
m) higher
than the heat exchanger, the pipe size shall be increased by at least one size.
