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  2. Rooftop water tower - Wikipedia

    en.wikipedia.org/wiki/Rooftop_water_tower

    A rooftop water tower is a variant of a water tower, consisting of a water container placed on the roof of a tall building. This structure supplies water pressure to floors at higher elevation than public water towers. [1] As building height increases, the vertical height of its plumbing also increases.

  3. Leak detection - Wikipedia

    en.wikipedia.org/wiki/Leak_detection

    Escaping liquids create an acoustic signal as they pass through a hole in the pipe. Acoustic sensors affixed to the outside of the pipeline can create a baseline acoustic "fingerprint" of the line from the internal noise of the pipeline in its undamaged state. When a leak occurs, a resulting low-frequency acoustic signal is detected and analysed.

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

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

    A worker checking that well about an alarm was also killed. [158] October, 1998 – During heavy rainfall, the roof and sides of a Koch 50,000 barrel (2,100,000 gallon) above-ground storage tank buckled, discharging approximate 24,700 gallons of crude oil into Marcelinas Creek, which is a tributary of the San Antonio River.

  5. Electrical liner integrity survey - Wikipedia

    en.wikipedia.org/wiki/Electrical_liner_integrity...

    In the presence of a hole, an electrical arc is formed along with an audible alarm. Since the arc testing method is not dependent on water making good contact through the leak, it is more sensitive and comparatively easy to perform in most types of liner construction (ponds, Landfills, tanks etc.)than the water-based methods.

  6. Dry well - Wikipedia

    en.wikipedia.org/wiki/Dry_well

    A dry well or drywell is an underground structure that disposes of unwanted water, most commonly surface runoff and stormwater, in some cases greywater or water used in a groundwater heat pump. It is a gravity-fed , vertical underground system that can capture surface water from impervious surfaces , then store and gradually infiltrate the ...

  7. Deviation survey - Wikipedia

    en.wikipedia.org/wiki/Deviation_survey

    In the oil industry, a deviation survey, [1] or simply a survey, is the measurement of a borehole's departure from the vertical, expressed in degrees (°).. When a well plan dictates the drilling of a straight borehole, surveys are periodically taken to ensure that it will hit its target and also to ensure that it does not trespass underneath different property lines.

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    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!

  9. Level sensor - Wikipedia

    en.wikipedia.org/wiki/Level_sensor

    For deep well designs, the Sealed Gauge measuring principle is also used. From a depth of approx. 20 m, the relative pressure can only be compensated to a limited extent by the thin hose. The level sensor is then designed as an absolute pressure transmitter whose zero point is adjusted to the desired mean air pressure depending on the location ...

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