§ 32.22T-5 - Performance standards for tank level or pressure monitoring devices.

(a) A tank level or pressure monitoring device shall determine the level of the liquid in a cargo tank without opening ullage holes, cargo hatches, or butterworth plates.

(b) A tank level or pressure monitoring device shall meet the following standards:

(1) Automatically compensate for changes in cargo volume due to temperature.

(2) Meet the requirements in § 111.105 of this chapter when used in hazardous locations.

(3) 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.

(4) Alarm before cargo in the cargo tank declines to a level of 0.5 percent below the quantity to which it was loaded, or 1,000 gallons of cargo, whichever is less.

(5) Operate without degradation in heavy seas, moisture, and varying weather conditions.

(6) Not alarm when loading or off loading cargo.

(7) Have audible and visible alarm indicators that can be seen and heard on the navigation bridge of the vessel, or towing vessel for non-self-propelled vessels, which are distinctly identifiable as cargo tank level or pressure monitoring alarms.