46 CFR 153.556
§ 153.556 Special requirements for sulfuric acid and oleum.
United States · 46 CFR — Shipping · Status: effective
Cite this
- Citation
- 46 CFR 153.556, § 153.556 Special requirements for sulfuric acid and oleum, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/228727
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Full text
(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 (CG-ENG) 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.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.