[Code of Federal Regulations]

[Title 46, Volume 4]

[Revised as of October 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 46CFR112.50-1]



[Page 260-261]

 

                            TITLE 46_SHIPPING



                  (This book contains parts 90 to 139)

 

   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)

 

PART 112_EMERGENCY LIGHTING AND POWER SYSTEMS--Table of Contents

 

Subpart 112.50_Emergency Diesel and Gas Turbine Engine Driven Generator 

                                  Sets

 

Sec.  112.50-1  General.





    (a) The prime mover of a generator set must have:

    (1) All accessories necessary for operation and protection of the 

prime mover; and

    (2) A self-contained cooling system of a size that ensures 

continuous operation with 100 degrees F (37 degrees C) air.

    (b) The fuel used must have a flashpoint of not less than 110 

degrees F (43 degrees C).

    (c) The room that has the generator set must have intake and exhaust 

ducts to supply adequate cooling air.

    (d) The generator set must be capable of carrying its full rated 

load within 45 seconds after cranking is started with the intake air, 

room ambient temperature, and starting equipment at O[deg]C. The 

generator's prime mover must not have a starting aid to meet this 

requirement, except that a thermostatically-controlled electric water-

jacket heater connected to the final emergency bus is permitted.

    (e) The generator set must start by hydraulic, compressed air, or 

electrical means.

    (f) The generator set must maintain proper lubrication when inclined 

to the angles specified in Sec.  112.05-5(c), and must be arranged so 

that it does not spill oil under a vessel roll of 30 degrees to each 

side of the vertical.

    (g) The generator set must shut down automatically upon loss of 

lubricating oil pressure, overspeed, or operation of a fixed fire 

extinguishing system in the emergency generator room (see Sec.  111.12-

1(b) for detailed overspeed trip requirements).

    (h) If the prime mover is a diesel engine, there must be an audible 

alarm that sounds on low oil pressure and high cooling water 

temperature.

    (i) If the prime mover is a gas turbine, it must meet the shutdown 

and alarm requirements in Sec.  58.10-15(f) of this chapter.

    (j) An independent fuel supply must be provided for the prime mover.

    (k) Each emergency generator that is arranged to be automatically 

started must be equipped with a starting device with an energy-storage 

capability of at least six consecutive starts. A second, separate source 

of starting energy may provide three of the required



[[Page 261]]



six starts. If a second source is provided, the system need only provide 

three consecutive starts.



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

28287, June 4, 1996; USCG-2004-18884, 69 FR 58348, Sept. 30, 2004]