[Code of Federal Regulations]
[Title 46, Volume 4]
[Revised as of October 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR112.50-7]

[Page 263]
 
                           TITLE 46--SHIPPING
 
    CHAPTER I--COAST GUARD, DEPARTMENT OF TRANSPORTATION (CONTINUED)
 
PART 112--EMERGENCY LIGHTING AND POWER SYSTEMS--Table of Contents
 
Subpart 112.50--Emergency Diesel and Gas Turbine Engine Driven Generator 
                                  Sets
 
Sec. 112.50-7  Compressed air starting.

    A compressed air starting system must meet the following:
    (a) The starting, charging, and energy storing devices must be in 
the emergency generator room, except for the main or auxiliary air 
compressors addressed in paragraph (c)(3)(i) of this section.
    (b) The compressed air starting system must provide the cranking 
torque and engine starting RPM recommended by the engine manufacturer.
    (c) The compressed air starting system must have an air receiver 
that meets the following:
    (1) Has a capacity for at least six consecutive starts. A second, 
separate source of starting energy may provide three of the required 
consecutive starts. If a second source is provided, the compressed air 
starting system need only provide three consecutive starts.
    (2) Supplies no other system.
    (3) Is supplied from one of the following:
    (i) The main or auxiliary compressed air receivers with a nonreturn 
valve in the emergency generator room and a handcranked, diesel-powered 
air compressor for recharging the air receiver.
    (ii) An electrically driven air compressor that is automatically 
operated and is powered from the emergency power source. If this 
compressor supplies other auxiliaries, there must be a non-return valve 
at the inlet of the starting air receiver and there must be a 
handcranked, diesel-powered air compressor for recharging the air 
receiver.

[CGD 74-125A, 47 FR 15267, Apr. 8, 1982, as amended by CGD 94-108, 61 FR 
28288, June 4, 1996]