MIL-HDBK-1003/11
5.4.11.3 Lubricant Pumps. Normally, main lubricant pumps are mechanically
driven from the engine. Warm-up and bypass filter pumps may be driven
separately with electric motors.
5.4.11.4 Waste Oil. Provisions must be made for removing and holding waste
oil from the generating plant.
5.4.11.5 Special Lubricant Treatment. For prime duty plants, lubricating
oil should be reclaimed by removing dilutants and insoluble contaminants.
Acidity should be controlled by means of a combination absorption and
vaporizing process, and possibly centrifugal purifiers and clarifiers in
either a batch or continuous operation. Packaged reclaiming systems
designed specifically for this purpose are available. The heat source for
these systems can be from direct fired equipment, reclaimed heat, or
electric power. Provisions must be made for the removal of waste solids
from these systems. All diesel-electric plants using heavy fuel oil or
blends of heavy and light oils should be provided with lubricating oil
reclaiming systems. Lubricating oil treatment systems shall be of the type
approved by the engine manufacturer and suitable for the type of lubricating
oil recommended by the engine manufacturer. Some types of treatment remove
desirable additives required by the engine manufacturers, and removal of
these additives may nullify engine manufacturer's guarantees.
5.4.12
Starting Systems.
5.4.12.1 Air Starting. The method used for starting shall be the standard
design of the engine manufacturer. Direct injection of compressed air into
cylinders is the preferred method of starting large diesel engines in prime
duty and standby/emergency duty plants. Air motors are optional for smaller
units. Where engine size requires the use of more than one starting air
motor as indicated by the manufacturer's standard instruction, the extra
motors, controls and assembly shall be provided as part of the engine
package.
5.4.12.2 Compressors for Air Starting. Where compressed air is used for
starting, two starting-air compressor units should be provided. One unit
should have an electric-motor drive, and one unit should have a dual
electric-motor/diesel-engine drive with battery start for the engine drive.
5.4.12.3 Starting Air Receivers. Where air starting is to be used, air
receivers shall be sized to provide multiple starts based on the following:
a) For prime and standby duty plants with 2 engines, a minimum of
3 starts shall be provided for each engine. This requires a minimum of 6
starts. For each additional engine air receiver capacity shall be added to
provide 3 starts for each engine added up to a total of 12 starts. One
receiver should be sized to provide a minimum of 3 starts for the largest
unit installed.
b) Receivers shall be manifolded in parallel, each with safety
valves, isolating and flow check valves, and automatic condensate drain trap
assemblies. For normal operating each engine has its own starting air tank
so that unsuccessful start of a specific engine does not deplete the
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