day tanks. Also, select between applications where
the main fuel storage tank is located above the day
tank and applications where the main fuel storage
tank is located below the day tank. The location of
all tanks, piping, and valves should also be
indicated on the drawings.
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[Integral day tanks may allow gravity flow into the engine. Gravity flow
tanks shall be provided with an internal or external valve located as near
as possible to the shell of the tank. The valve shall close when the
engine is not operating. Integral day tanks shall be provided with any
necessary pumps to supply fuel to the engine as recommended by the
generator set manufacturer. The overflow connection and the fuel supply
line for integral day tanks which do not rely upon gravity flow shall be
arranged so that the highest possible fuel level is below the fuel
injectors.] [Self-supporting day tank shall either be arranged so that the
fuel level in the day tank remains above the suction port of the engine
driven fuel pump or be provided with a transfer pump to provide fuel to the
engine driven pump. The overflow connection and fuel supply line shall be
arranged so that the highest possible fuel level is below the fuel
injectors.] [When the main fuel storage tanks are located below the day
tank, a check valve shall be provided in the fuel supply line entering the
day tank.] [When the main fuel storage tanks are located above the day
tank, a solenoid valve shall be installed in the fuel supply line entering
the day tank. The solenoid valve shall be in addition to the automatic
fuel shut off valve.]The fuel supply line from the day tank to the
manufacturer's standard engine connection shall be welded pipe.
2.3.6
Fuel Supply System
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NOTE: Delete this paragraph if an integral main
fuel storage tank is used.
**************************************************************************
The fuel supply from the main storage of fuel to the day tank shall be as
specified in Section 13202 FUEL STORAGE SYSTEMS.
2.4
LUBRICATION
Each engine shall have a separate lube-oil system conforming to NFPA 30 and
NFPA 37. Each system shall be pressurized by engine-driven oil pumps.
Each system shall be furnished with a relief valve for oil pressure
regulation (for closed systems) and a dip-stick for oil level indications.
The crankcase shall be vented in accordance with the manufacturer's
recommendation except that it shall not be vented to the engine exhaust
system. Crankcase breathers, if provided on engines installed in buildings
or enclosures, shall be piped to vent to the outside. The system shall be
readily accessible for service such as draining, refilling, etc. Each
system shall permit addition of oil and have oil-level indication with the
set operating. The system shall utilize an oil cooler as recommended by
the engine manufacturer.
2.4.1
Filter
One full-flow filter shall be provided for each pump. The filter shall be
readily accessible and capable of being changed without disconnecting the
SECTION 16264A
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