GENERAL ELECTRIC GENERATING PLANTS Part 6 pdf

MIL-HDBK-1003/11

fuel oil centrifuging of all fuels delivered by water transport as fuels can

be easily contaminated with water or solids. Provide heating for heavy fuel

oils, and in cold climates for all fuels. Filtration shall be provided for

all types of fuel. Comply with applicable state and local regulations

concerning storage and treatment of fuels.

5.4.5.3 Conversion Fuel. On prime duty, Design 2 plants, provide

additional space for installing future additions to the fuel handling

equipment, for example, fuel storage for residual fuel and pilot diesel fuel

if required, plus residual fuel heaters and centrifuges, dirty fuel tanks

and similar items.

5.4.6 Fuel Storage and Day Tank Volumes. Use above-ground storage tanks

within diked areas. Provide 30-day storage capacity for prime duty plants

and 7-day storage for standby/emergency duty plants unless local conditions

will allow less or require greater volume. Storage tank volume shall be

based on the rate of fuel consumption of all engines including spares, at

100 percent load, multiplied by a 0.75 operating factor. Tanks should be

selected in standard manufactured sizes and should be vertical or

horizontal, as best suits the site conditions. The use of underground

storage tanks may be considered for small plants if leak detection and

double containment provisions are provided. Day tank volumes shall be

determined based on the following:

5.4.6.1 Prime Duty Plants. Provide a day tank for each engine with storage

for not less than 2 hours full load operation and with automatic transfer

pumps and level controls.

5.4.6.2 Standby/Emergency Duty Plants in Standby Service. Provide

manually-filled day tanks, each of a capacity able to satisfy 8 hours of

full load operations.

5.4.6.3 Standby/Emergency Duty Plants in Emergency Service. Provide a day

tank and transfer pump unit for each engine, as recommended by the engine

manufacturer. Interior tank capacities shall not exceed the requirements

given in the National Fire Protection Association (NFPA) No. 37, Stationary

Combustion Engines and Gas Turbines.

5.4.6.4 Bulk Fuel Storage and Handling. Storing and receiving of fuel oil

outside the generating plant is covered in NAVFAC DM-22 and in the

definitive designs and guide specifications of the oil-fired definitive

power plants listed in NAVFAC P-272, Part II, which includes handling the

fuel in plants. For rules and regulations, refer to NFPA No. 31, Oil

Burning Equipment.

5.4.7 Air Intake Systems. Use an outdoor air intake for all prime and

standby/emergency duty plant designs, except for very small units in warm

climates. Intake velocities and pressure drops should be selected in

keeping with engine limitations. In frigid temperature zones, air

preheating, or a bypass of outside air sources should be provided to

facilitate engine starting. Four-stroke engines require approximately 3 to

3.5 cfm of free air

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