64.13—Allowable stress; tank.
(a)
The calculated stress in the tank under design conditions, including dynamic loading conditions applied simultaneously, must not exceed the allowable stress listed in Division 1 of section VIII of the ASME Code, for a design temperature of 122 °F.
(b)
The calculated stress in the tank at test pressure must not exceed 75 percent of the minimum yield stress, 1 or 37.5 percent of the minimum tensile stress 1 of the material, whichever is less.
Code of Federal Regulations
Footnote(s): 1 Listed in Division 1 of section VIII of the ASME Code.
[CGD 73-172, 39 FR 22950, June 25, 1974, as amended by CGD 84-043, 55 FR 37410, Sept. 11, 1990]