154.802—Alternate pressure relief settings.
Cargo tanks with more than one relief valve setting must have one of the following arrangements:
(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).