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  2. Gas leak - Wikipedia

    en.wikipedia.org/wiki/Gas_leak

    In the United States, most state and federal agencies have adopted the Gas Piping and Technology Committee (GPTC) standards for grading natural gas leaks. A Grade 1 leak is a leak that represents an existing or probable hazard to persons or property, and requires immediate repair or continuous action until the conditions are no longer hazardous ...

  3. Gas meter - Wikipedia

    en.wikipedia.org/wiki/Gas_meter

    The volume of gas flow provided by a gas meter is just that, a reading of volume. Gas volume does not take into account the quality of the gas or the amount of heat available when burned. Utility customers are billed according to the heat available in the gas. The quality of the gas is measured and adjusted for in each billing cycle.

  4. Ground source heat pump - Wikipedia

    en.wikipedia.org/wiki/Ground_source_heat_pump

    The initial cost can be two to five times that of a conventional heating system in most residential applications, new construction or existing. In retrofits, the cost of installation is affected by the size of the living area, the home's age, insulation characteristics, the geology of the area, and the location of the property.

  5. Arizona regulators fine natural gas utility $2 million over ...

    www.aol.com/arizona-regulators-fine-natural-gas...

    Southwest Gas estimates there are more than 10,000 miles (16,100 kilometers) of the piping throughout Arizona. The utility says it has a plan to target high-risk areas for replacement or abandonment.

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  7. Micro combined heat and power - Wikipedia

    en.wikipedia.org/wiki/Micro_combined_heat_and_power

    A 2013 UK report from Ecuity Consulting stated that MCHP is the most cost-effective method of utilizing gas to generate energy at the domestic level. [ 14 ] [ 15 ] The fuel cell industry review stated in 2013 that with 64% of global sales the fuel cell micro-combined heat and power had passed the conventional engine-based micro-CHP systems in ...

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  9. Leak detection - Wikipedia

    en.wikipedia.org/wiki/Leak_detection

    In order to analyse the concentration distribution present in the sensor tube, a pump pushes the column of air in the tube past a detection unit at a constant speed. The detector unit at the end of the sensor tube is equipped with gas sensors. Every increase in gas concentration results in a pronounced "leak peak". [6] [25] [26]

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