All unlined cargo tanks · Thickness Test · transporting material corrosive to the tank, except MC 338

For All unlined cargo tanks, test or inspection is Thickness Test; condition or service qualifier is transporting material corrosive to the tank, except MC 338; interval is 2 years; regulation section is 49 CFR § 180.407, recorded from its source on 2026-08-10; source re-checked 2026-09-30.

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

Thickness Test: | | | All unlined cargo tanks transporting material corrosive to the tank, except MC 338 | September 1, 1992 | 2 years.

— law.cornell.edu, retrieved 2026-08-10

Source

• law.cornell.eduhttps://www.law.cornell.edu/cfr/text/49/180.407

Last verified against source: 2026-09-30. Due for re-check by 2027-09-30. This page as Markdown · OKF bundle · full dataset as JSON.