[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: 46CFR63.25-7]

[Page 316]
 
                           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. 63.25-7  Exhaust gas boilers.

    (a) Construction. An auxiliary exhaust gas boiler must meet the 
applicable construction requirements of part 52 or part 53 of this 
chapter as determined from Sec. 54.01-5, Table 54.01-5(A) of this 
chapter.
    (b) Controls. Each drum type exhaust gas steam boiler must have a 
feed water control system. The system must automatically supply the 
required amount of feed water and maintain it at the proper level. For 
boilers without a fixed water level, the control system must supply the 
feed water at a rate sufficient to ensure proper heat transfer. The 
system must adequately fill the boiler when cold.
    (c) Alarms. When a condition arises which results in inadequate heat 
transfer, a high temperature alarm or low flow alarm must be activated. 
An audible alarm must automatically sound, and a visual indicator must 
indicate when the fluid temperature exceeds the maximum operating 
temperature or when the fluid/steam flowing through the heat exchanger 
is insufficient to ensure proper heat transfer. Additionally, an audible 
alarm must automatically sound, and a visual indicator must indicate 
when a soot fire is present in the exhaust gas boiler's uptake.