46 C.F.R. § 153.556 Special requirements for sulfuric acid and oleum.
Title 46 - Shipping
(a) Except as prescribed in paragraphs (b) and (c) of this section, containment systems carrying sulfuric acid, oleum, or contaminated sulfuric acid are approved by the Commandant (G-MSO) on a case by case basis. (b) A containment system carrying sulfuric acid may be: (1) Made of unlined steel if the cargo composition is between 70 and 80 or between 90 and 100 percent acid by weight; (2) Lined with lead if the cargo composition does not exceed 96 percent acid by weight; or (3) Lined with natural rubber or neoprene if the cargo composition does not exceed 51 percent acid by weight. (c) A containment system for oleum may be of unlined steel if the concentration of free sulfur trioxide in the oleum exceeds 20 percent by weight. [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1983]
Title 46: Shipping
PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS
Subpart B—Design and Equipment
Special Requirements
§ 153.556 Special requirements for sulfuric acid and oleum.
