46 C.F.R. § 154.802 Alternate pressure relief settings.
Title 46 - Shipping
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).
Title 46: Shipping
PART 154—SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES
Subpart C—Design, Construction and Equipment
Cargo Vent Systems
§ 154.802 Alternate pressure relief settings.
