[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: 46CFR56.30-30]

[Page 191]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 56_PIPING SYSTEMS AND APPURTENANCES--Table of Contents
 
        Subpart 56.30_Selection and Limitations of Piping Joints
 
Sec. 56.30-30  Brazed joints.

    (a) General (refer also to subpart 56.75). Brazed socket-type joints 
shall be made with suitable brazing alloys. The minimum socket depth 
shall be sufficient for the intended service. Brazing alloy shall either 
be end-fed into the socket or shall be provided in the form of a 
preinserted ring in a groove in the socket. The brazing alloy shall be 
sufficient to fill completely the annular clearance between the socket 
and the pipe or tube.
    (b) Limitations. (1) Brazed socket-type joints shall not be used on 
systems containing flammable or combustible fluids in areas where fire 
hazards are involved or where the service temperature exceeds 425 
[deg]F. When specifically approved by the Commandant, brazed 
construction may be used for service temperatures up to 525 [deg]F. in 
boiler steam air heaters provided the requirements of UB-12 of section 
VIII of the ASME Code are satisfied at the highest temperature desired.
    (2) Brazed joints depending solely upon a fillet, rather than 
primarily upon brazing material between the pipe and socket are not 
acceptable.