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2. Tank leak detection - Wikipedia

   en.wikipedia.org/wiki/Tank_leak_detection

   The method requires a secondary containment, it can be a double wall of the UST where the outer tank wall provides a barrier between the inner tank and the environment. Interstitial methods include the use of a hydrocarbon-sensitive sensor cables or probes connected to a monitoring console. Once the hydrocarbons is detected an alarm goes off.

3. Glossary of firefighting equipment - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_firefighting...

   Wall-indicator valve Type of control valve for sprinkler systems that is mounted to an outside wall and indicates "open" or "shut" in an indicator window on the valve body. Water curtain nozzle A nozzle designed to throw a fan of water droplets to form a "curtain" in an attempt to reduce the risk of radiated heat igniting a nearby exposure.

4. Water detector - Wikipedia

   en.wikipedia.org/wiki/Water_detector

   Electronic components used to make a simple water detector: battery, resistor, transistor, water sensor and piezoelectric buzzer for audible alert A water detector is an electronic device that is designed to detect the presence of water for purposes such as to provide an alert in time to allow the prevention of water leakage.

5. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

6. Underground storage tank - Wikipedia

   en.wikipedia.org/wiki/Underground_storage_tank

   Many thousands of old underground tanks were replaced with newer tanks made of corrosion resistant materials (such as fiberglass, steel clad with a thick FRP shell, and well-coated steel with galvanic anodes) and others constructed as double walled tanks to form an interstice between two tank walls (a tank within a tank) which allowed for the ...

7. Sight glass - Wikipedia

   en.wikipedia.org/wiki/Sight_glass

   In a magnetic indicator is a float on the surface of the liquid contains a permanent magnet. The liquid is contained in a chamber of strong, non-magnetic material, avoiding the use of glass. The level indicator consists of a number of pivoting magnetic vanes arranged one above the other and placed close to the chamber containing the float.

8. Fuel gauge - Wikipedia

   en.wikipedia.org/wiki/Fuel_gauge

   When the tank is empty and the least current is flowing, the needle points to "E" indicating an empty tank; some vehicles use the indicators "1" (for full) and "0" (for empty) or "R" (for reserve) instead. [4] The digital fuel gauge in a 2018 Mazda 3 showing a nearly-empty tank along with a distance to empty display.

9. External floating roof tank - Wikipedia

   en.wikipedia.org/wiki/External_floating_roof_tank

   An external floating roof tank is a storage tank commonly used to store large quantities of petroleum products such as crude oil or condensate. It consists of an open- topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid. The roof rises and falls with the liquid level in the tank. [1]