§39.2013. High and low vapor pressure protection for tankships—T/ALL.
46 C.F.R. § 39.2013
Each tankship with a vapor collection system must be fitted with a pressure-sensing device, located as close as practicable to the vessel vapor connection, that measures the pressure in the main vapor collection line, which—
Has a pressure indicator located on the tankship where the cargo transfer is controlled; and
Has a high-pressure and a low-pressure alarm that—
Gives an audible and a visible warning on the vessel where the cargo transfer is controlled;
Activates an alarm when the pressure-sensing device measures a high pressure of not more than 90 percent of the lowest pressure relief valve setting in the cargo tank venting system; and
Activates an alarm when the pressure-sensing device measures a low pressure of not less than 0.144 pounds per square inch gauge (psig) for an inerted tankship, or the lowest vacuum relief valve setting in the cargo tank venting system for a non-inerted tankship.
Notes, amendments, and revision history
Authority
Authority: 42 U.S.C. 7511b(f)(2); 46 U.S.C. 3306, 3703, 3715(b), 70011, 70034; Executive Order 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation No. 00170.1, Revision No. 01.4.
Source
Source: USCG-1999-5150, 78 FR 42642, July 16, 2013, unless otherwise noted.