StacksVerified U.S. regulatory reference

49 CFR §178.347-5

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Each cargo tank must be tested in accordance with § 178.345-13 and this section.
  2. (b)Pressure test. Test pressure must be as follows:
    1. (1)Using the hydrostatic test method, the test pressure must be at least 40 psig or 1.5 times tank MAWP, whichever is greater.
    2. (2)Using the pneumatic test method, the test pressure must be 40 psig or 1.5 times tank MAWP, whichever is greater, and the inspection pressure is tank MAWP.