§ 154.802 Alternate pressure relief settings.
Current through Sep 25, 2026 · Read all of Part 154
Cargo tanks with more than one relief valve setting must have one of the following arrangements:
(a) Relief valves that:
(1) Are set and sealed under § 154.801(c);
(2) Have the capacity under § 154.806; and
(3) Are interlocked so that cargo tank venting can occur at any time.
(b) Relief valves that have spacer pieces or springs that:
(1) Change the set pressure without pressure testing to verify the new setting; and
(2) Can be installed without breaking the sealing wire required under § 154.801(c)(3).