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2. 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.

3. 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 ...

4. Texas City refinery explosion - Wikipedia

   en.wikipedia.org/wiki/Texas_City_Refinery_explosion

   The process control level transmitter was designed to indicate the raffinate level within a 5-foot (1.5 m) span from the bottom of the splitter tower to a 9-foot (2.7 m) level. A high-level alarm dependent on this transmitter sounded as intended at 3:09 am, when a level of 7.6 feet (2.3 m) from the bottom was reached.

5. 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.

6. List of natural gas and oil production accidents in the ...

   en.wikipedia.org/wiki/List_of_natural_gas_and...

   October 17, 2017 - Two oilfield workers were injured after an oil storage tank exploded at an oilfield near Dilley. [188] December 6, 2017 - A gas well blowout in Houston. [189] December 27, 2017 - A fire broke out at an oil tank, in Cherokee County. [190] January 3, 2018 - An oil tank fire in Madison County. [191]

7. 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 ...