§ 183.512. Fuel tanks: Prohibited materials.
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/us/cfr/t33/s§ 183.512·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
(a)A fuel tank must not be constructed from terneplate.
(b)Unless it has an inorganic sacrificial galvanic coating on the inside and outside of the tank, a fuel tank must not be constructed from black iron or carbon steel.
(c)A fuel tank encased in cellular plastic or in fiber reinforced plastic must not be constructed from a ferrous alloy. \[CGD 74-209, 42 FR 5950, Jan. 31, 1977; 42 FR 24739, May 16, 1977\]