46 C.F.R. § 98.30-27 Connections.
Title 46 - Shipping
(a) Each person who makes a connection for a transfer operation shall— (1) Use suitable material in joints and couplings to make a tight seal; (2) Use a bolt in at least every other hole and in no case less than four bolts in each temporary connection utilizing an American National Standards Institute (ANSI) standard flange coupling; (3) Use a bolt in each hole of couplings other than ANSI standard flange couplings; (4) Use a bolt in each hole of each permanently connected flange coupling; (5) Use bolts of the same size in each bolted coupling; and (6) Tighten each bolt and nut uniformly to distribute the load. (b) No person who makes a connection for a transfer operation may use any bolt that shows signs of strain or is elongated or deteriorated. (c) No person may use a connection for transfer operations unless it is— (1) A bolted or full threaded connection; or (2) A quick-connect coupling accepted by the Coast Guard.
Title 46: Shipping
PART 98—SPECIAL CONSTRUCTION, ARRANGEMENT, AND OTHER PROVISIONS FOR CERTAIN DANGEROUS CARGOES IN BULK
Subpart 98.30—Portable Tanks
§ 98.30-27 Connections.

