[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: 46CFR63.25-1]

[Page 315]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 63_AUTOMATIC AUXILIARY BOILERS--Table of Contents
 
  Subpart 63.25_Requirements for Specific Types of Automatic Auxiliary 
                                 Boilers
 
Sec. 63.25-1  Small automatic auxiliary boilers.


    Small automatic auxiliary boilers, defined as having a heat input 
rating of 400,000 Btu/hr. and less (117 kilowatts and less) (3 gph and 
less), must meet the following additional requirements.
    (a) Small automatic auxiliary boilers must be equipped with a visual 
indicator which indicates when the low water cutoff has activated.
    (b) A prepurge period of a sufficient duration to ensure at least 
four changes of air in the combustion chamber and stack, but not less 
than 15 seconds must be provided. Ignition must occur only before or 
simultaneously with the opening of the fuel oil valve.