§64.47. Type of relief devices.
46 C.F.R. § 64.47
An MPT with an internal capacity of more than 550 U.S. gallons must have one or more spring loaded relief valves. In addition, a rupture disc may be attached.
An MPT with an internal capacity of 550 U.S. gallons or less must have a rupture disc or a spring loaded relief valve.
Notes, amendments, and revision history
Authority
Authority: 46 U.S.C. 3306, 3703; 49 U.S.C. App. 1804; Department of Homeland Security Delegation No. 00170.1, Revision No. 01.3.
Source
Source: CGD 73-172, 39 FR 22950, June 25, 1974, unless otherwise noted.