[Code of Federal Regulations]
[Title 46, Volume 1]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR39.20-3]

[Page 512]
 
                           TITLE 46--SHIPPING
 
         CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY
 
PART 39_VAPOR CONTROL SYSTEMS--Table of Contents
 
                   Subpart 39.20_Design and Equipment
 
Sec. 39.20-3  Cargo gauging system--TB/ALL.

    (a) Each cargo tank of a tank vessel that is connected to a vapor 
collection system must be equipped with a cargo gauging device which:
    (1) Provides a closed gauging arrangement as defined in Sec. 
151.15.10 of this chapter that does not require opening the tank to the 
atmosphere during cargo transfer;
    (2) Allows the operator to determine the liquid level in the tank 
for the full range of liquid levels in the tank;
    (3) Indicates the liquid level in the tank at the location where 
cargo transfer is controlled; and
    (4) If portable, is installed on the tank during the entire transfer 
operation.
    (b) Except when a tank barge complies with Sec. 39.20-9(a) of this 
part, each cargo tank of a barge must have a high level indicating 
device that:
    (1) Provides a visual indication of the liquid level in the cargo 
tank when the cargo level is within 1.0 meter (3.28 feet) of the tank 
top;
    (2) Has the maximum liquid level permitted under Sec. 39.30-1(e) of 
this part at even keel conditions conspicuously and permanently marked 
on the indicating device; and
    (3) Is visible from all cargo control areas on the tank barge.

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