[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: 46CFR59.10-15]

[Page 284]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 59_REPAIRS TO BOILERS, PRESSURE VESSELS AND APPURTENANCES--Table of Contents
 
Subpart 59.10_Welding Repairs to Boilers and Pressure Vessels in Service
 
Sec. 59.10-15  Rivets and staybolts.

    (a) It is not permitted to reinforce or build up by welding the 
heads of rivets or staybolts that have deteriorated. Such rivets or 
staybolts shall be replaced. The seal welding of rivet heads to secure 
tightness is prohibited.
    (b) Where leaks develop around staybolts which are otherwise in good 
condition, the nuts may be replaced with a beveled collar formed around 
the end of the stay by means of welding. In such cases, the depth of 
collar measured on the stay and the width measured on the plate, shall 
be equal to one-half the diameter of the staybolt.