§39.2003. Cargo gauging system—TB/ALL.
46 C.F.R. § 39.2003
A cargo tank of the tank vessel connected to a vapor collection system must be equipped with a permanent or portable cargo gauging device that—
Is a closed type as defined in 46 CFR 151.15.10(c) that does not require opening the tank to the atmosphere during cargo transfer;
Allows the operator to determine the level of liquid in the tank for the full range of liquid levels in the tank;
Has an indicator for the level of liquid in the tank that is located where cargo transfer is controlled; and
If portable, is installed on the tank during the entire transfer operation.
Each cargo tank of a tank barge must have a high-level indicating device, unless the barge complies with 46 CFR 39.2009(a). The high-level indicating device must—
Indicate visually the level of liquid in the cargo tank when the liquid level is within a range of 1 meter (3.28 feet) of the top of the tank;
Show a permanent mark to indicate the maximum liquid level permitted under 46 CFR 39.3001(e) at even keel conditions; and
Be visible from all cargo control areas.
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.