CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER F—MARINE ENGINEERING (parts 50 to 64) > PART 56—PIPING SYSTEMS AND APPURTENANCES > SUBPART 56.90—Assembly (§56.90-1 to §56.90-10) > 56.90-10—Threaded piping (modifies 135.5).

56.90-10—Threaded piping (modifies 135.5).

(a) Any compound or lubricant used in threaded joints shall be suitable for the service conditions and shall not react unfavorably with either the service fluid or the piping materials.
(b) Threaded joints which are to be seal welded shall be made up without any thread compound.
(c) Backing off to permit alignment of pipe threaded joints shall not be permitted.
[CGFR 68-82, 33 FR 18843, Dec. 18, 1968, as amended by USCG-2003-16630, 73 FR 65185, Oct. 31, 2008]