Acceptable results of tests and inspections.

(a)Corroded or abraded areas. The minimum thickness may not be less than that prescribed in the applicable specification.#

(b)Dents, cuts, digs and gouges. For evaluation procedures, see CGA C-6 (IBR, see § 171.7 of this subchapter).#

(1)For dents at welds or that include a weld, the maximum allowable depth is 1/2 inch. For dents away from welds, the maximum allowable depth is 1/10 of the greatest dimension of the dent, but in no case may the depth exceed one inch.#

(2)The minimum thickness remaining beneath a cut, dig, or gouge may not be less than that prescribed in the applicable specification.#

(c)Weld or structural defects. Any cargo tank with a weld defect such as a crack, pinhole, or incomplete fusion, or a structural defect must be taken out of hazardous materials service until repaired.#

(d)Leakage. All sources of leakage must be properly repaired prior to returning a tank to hazardous materials service.#

(e)Relief valves. Any pressure relief valve that fails to open and reclose at the prescribed pressure must be repaired or replaced.#

(f)Liner integrity. Any defect shown by the test must be properly repaired.#

(g)Pressure test. Any tank that fails to meet the acceptance criteria found in the individual specification that applies must be properly repaired.#