Regulationhistorical
49 CFR 178.338-5
Stiffening rings.
Snapshot 2000-10-01 Government source
eCFR editorial compilationAuthoritative but unofficial
View source (a) A tank is not required to be provided with stiffening rings, except as prescribed in the ASME Code.
(b) If a jacket is evacuated, it must be constructed in compliance with § 178.338-1(f). Stiffening rings may be used to meet these requirements.
[Amdt. 178-77, 48 FR 27704, June 16, 1983]