[Code of Federal Regulations]
[Title 33, Volume 2]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 33CFR155.490]

[Page 384]
 
                TITLE 33--NAVIGATION AND NAVIGABLE WATERS
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 155--OIL OR HAZARDOUS MATERIAL POLLUTION PREVENTION REGULATIONS FOR 
VESSELS--Table of Contents
 
                       Subpart B--Vessel Equipment
 
Sec. 155.490  Tank level or pressure monitoring devices.

    (a) Applicability. The tank level or pressure monitoring (TLPM) 
device requirements of this section apply to--
    (1) U.S.-flag single-hull tank vessels carrying oil or oil residue 
as cargo; and
    (2) Foreign-flag single-hull tank vessels carrying oil or oil 
residue as cargo when operating in the navigable waters of the United 
States and the exclusive economic zone (EEZ) when bound to or from a 
port or place in the United States.
    (b) By October 17, 2007, each vessel required under paragraph (a) of 
this section to meet the requirements of this section, must have a tank 
level or pressure monitoring device that is permanently installed on 
each cargo tank and meets the requirements of this section.
    (c) Each device must meet the following requirements:
    (1) Be intrinsically safe as per 46 CFR 111.105;
    (2) Indicate any loss of power or failure of the tank level or 
pressure monitoring device and monitor the condition of the alarm 
circuitry and sensor by an electronic self-testing feature;
    (3) Alarm at or before the cargo in the cargo tank either increases 
or decreases by a level of one percent from the cargo quantity in the 
tank after securing cargo transfer operations;
    (4) Operate in conditions up to sea state 5, moisture, and varying 
weather conditions; and
    (5) Have audible and visual alarm indicators which are distinctly 
identifiable as cargo tank level or pressure monitoring alarms that can 
be seen and heard on the navigation bridge of the tank ship or towing 
vessel and on the cargo deck area.
    (d) Double-hull tank vessels are exempt from the requirements of 
this section.
    (e) This section does not apply to tank vessels that carry asphalt 
as their only cargo.

[USCG-2001-9046, 67 FR 58524, Sept. 17, 2002]