[Code of Federal Regulations]
[Title 46, Volume 2]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR61.35-3]

[Page 295-296]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 61_PERIODIC TESTS AND INSPECTIONS--Table of Contents
 
  Subpart 61.35_Design Verification and Periodic Testing for Automatic 
                            Auxiliary Boilers
 
Sec. 61.35-3  Required tests and checks.

    (a) Tests and checks must include the following:
    (1) Safety (Programming) controls. Safety controls must control and 
cycle the unit in the proper manner and sequence. Proper prepurge, 
ignition, postpurge, and modulation must be verified. All time intervals 
must be verified.
    (2) Flame safeguard. The flame safeguard system must be tested by 
causing flame and ignition failures. Operation of the audible alarm and 
visible indicator must be verified. The shutdown times must be verified.
    (3) Fuel supply controls. Satisfactory shutdown operation of the two 
fuel control solenoid valves must be verified. No visible leakage from 
the valves into the burner(s) must be verified.
    (4) Fuel oil pressure limit control. A safety shutdown must be 
initiated by lowering the fuel oil pressure below the value required for 
safe combustion. System shutdown and the need for manual reset prior to 
automatic startup must be verified.
    (5) Fuel oil temperature limit control. (Units designed to burn 
heavy fuel oil.) A safety shutdown must be initiated by lowering the 
fuel oil temperature below the designed temperature. System shutdown and 
the need for manual

[[Page 296]]

reset prior to automatic startup must be verified.
    (6) Combustion controls. Smooth and stable operation of the 
combustion controls must be verified.
    (7) Draft limit control. The draft loss interlock switch must be 
tested to ensure proper operation. The draft limit control must cause 
burner shutdown and prevent startup when an inadequate air volume is 
supplied to the burner(s).
    (8) Limit controls. Shutdown caused by the limit controls must be 
verified.
    (9) Water level controls. Water level controls must be tested by 
slowly lowering the water level in the boiler. Each operating water 
level control must be individually tested. The upper low water cutoff 
and the lower low water cutoff must each be tested. The audible alarm 
and visible indicator associated with the lower low water cutoff must be 
tested. The manual reset device must be tested after the lower low water 
cutoff has been activated.
    (10) Feed water flow controls. The feed water flow limit device 
(found on steam boilers and water heaters without water level controls) 
must be tested by interrupting the feed water supply. Manual reset must 
be required prior to restarting the boiler.
    (11) Low voltage test. The fuel supply to the burners must 
automatically shut off when the supply voltage is lowered.
    (12) Switches. All switches must be tested to verify satisfactory 
operation.