49 C.F.R. § 178.255-13
Repair of tanks
(a) Tanks failing to meet the test may be repaired and retested, provided that repairs are made in complete compliance with the requirements of this specification.
(b) [Reserved]
(a) Tanks failing to meet the test may be repaired and retested, provided that repairs are made in complete compliance with the requirements of this specification.
(b) [Reserved]