- (a) All cargo tanks to be vented at gage pressures of 4 pounds per square inch or less shall be constructed and tested as required by the requirements of the American Bureau of Shipping or other recognized classification society.
- (b) All cargo tanks to be vented at gage pressures above 4 pounds per square inch shall be considered as pressure vessels and shall meet the requirements for such vessels as to construction and testing, as set forth in subchapter F (Marine Engineering) of this chapter.
- (c) Gastight bulkheads shall be subjected to a thorough hose test.
[CGFR 65-50, 30 FR 16671, Dec. 30, 1965, as amended by CGFR 68-82, 33 FR 18805, Dec. 18, 1968]