§ 154.620 - Design temperature below -55 °C (-67 °F) and down to -165 °C (-265 °F).

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§ 154.620 Design temperature below −55 °C (−67 °F) and down to −165 °C (−265 °F).

Plates, forgings and forged or rolled fittings, and rolled, forged or extruded bars and shapes for cargo tanks, secondary barriers, and process pressure vessels for a design temperature below −55 °C (−67 °F) and down to −165 °C (−265 °F) must:

(a) Meet § 54.25-10(b)(2), § 54.25-15, or § 54.25-20 of this chapter; or

(b) Be of an aluminum alloy that is specially approved by the Commandant (CG-ENG).

[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                    
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§ 154.620 - Design temperature below -55 °C (-67 °F) and down to -165 °C (-265 °F).

§ 154.620 Design temperature below −55 °C (−67 °F) and down to −165 °C (−265 °F).