Section 54.01-18 - Plan approval(a) Manufacturers intending to fabricate pressure vessels, heat exchangers, evaporators, and similar appurtenances, covered by the regulations in this part must submit detailed plans in accordance with subpart 50.20 of this subchapter except as provided in paragraph (c) of this section.(b) The following information must be submitted:(1) Calculations for all pressure containment components including the maximum allowable working pressure, the hydrostatic or pneumatic test pressure, and the intended safety device setting.(2) Joint design and methods of attachment of all pressure containment components.(3) Foundations and supports (design and attachment).(4) Pertinent calculations for pressure vessel foundations and/or supports.(5) A bill of material meeting the requirements of Section VIII of the ASME BPVC (incorporated by reference; see § 54.01-1 ), as modified by this part.(6) A diagrammatic arrangement drawing of the assembled unit indicating location of internal and external components.(c) Plans for Class I, II, and III pressure vessels with the ASME "U" stamp that do not contain hazardous materials are not required to be submitted for approval (see § 54.01-5(e) ).CGFR 68-82, 33 FR 18828, Dec. 18, 1968, as amended by USCG-2003-16630, 73 FR 65166 , Oct. 31, 2008