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2. Buncefield fire - Wikipedia

   en.wikipedia.org/wiki/Buncefield_fire

   The tank had a level gauge that employees used to monitor the level manually, and an independent high-level switch which would shut off inflow if the level got above a certain setpoint. On Tank 912, the manual gauge was stuck and the independent shut-off switch was inoperative, meaning that the tank was being "filled blind" with petrol (i.e ...

3. Float switch - Wikipedia

   en.wikipedia.org/wiki/Float_switch

   A pedestal sump pump with a float switch. A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices. One type of float switch uses a mercury switch inside a hinged float.

4. Pumping station - Wikipedia

   en.wikipedia.org/wiki/Pumping_station

   Features may include controls for fully automatic operation; a high-level alarm indication, in the event of pump failure; and possibly a guide-rail/auto-coupling/pedestal system, to permit easy removal of pumps for maintenance. Traditional site constructed systems have the valve vault components installed in a separate structure.

5. Tank leak detection - Wikipedia

   en.wikipedia.org/wiki/Tank_leak_detection

   4a System based on fuel reconciliation (measurement of amount sold through the dispenser against the amount that goes out of the tank according to the tank gauge).Any discrepancies release an alarm. 4b Detection of tank leak in quiet periods (liquid level is changing while the tank is not dispensing fuel).

6. Process plant shutdown systems - Wikipedia

   en.wikipedia.org/wiki/Process_plant_shutdown_systems

   A process plant shutdown system is a functional safety countermeasure crucial in any hazardous process plant such as oil and gas production plants and oil refineries. The concept also applies to non-process facilities such as nuclear plants. These systems are used to protect people, assets, and the environment when process conditions get out of ...

7. Tanker (ship) - Wikipedia

   en.wikipedia.org/wiki/Tanker_(ship)

   For oil tankers, systems will need to be in place to manage operational hazards, including a means of producing and introducing inert gas into cargo tanks to prevent explosion. [5] Cargo tanks are typically fitted with the ability to monitor levels of liquid within a tank, as well as an overfill or high level alarm function. [5]