Science & Technology
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Dominion Energy Questar Pipeline Methane Challenge Partner Profile
Partner profile that provides an overview of the company and summary information about its involvement in EPA's voluntary methane programs.
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Dominion Energy Utah, Wyoming, and Idaho Methane Challenge Partner Profile
Partner profile that provides an overview of the company and summary information about its involvement in EPA's voluntary methane programs.
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Dominion Energy Wexpro Methane Challenge Partner Profile
Partner profile that provides an overview of the company and summary information about its involvement in EPA's voluntary methane programs.
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Eastern Gas Transmission and Storage Methane Challenge Partner Profile
Partner profile that provides an overview of the company and summary information about its involvement in EPA's voluntary methane programs.
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Eversource Methane Challenge Partner Profile
Partner profile that provides an overview of the company and summary information about its involvement in EPA's voluntary methane programs.
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Iroquois Gas Transmission Methane Challenge Partner Profile
Partner profile that provides an overview of the company and summary information about its involvement in EPA's voluntary methane programs.
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Kern River Gas Transmission Company Methane Challenge Partner Profile
Partner profile that provides an overview of the company and summary information about its involvement in EPA's voluntary methane programs.
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Kinder Morgan Methane Challenge Partner Profile
Partner profile that provides an overview of the company and summary information about its involvement in EPA's voluntary methane programs.
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MDU Resources Group, Inc. Methane Challenge Partner Profile
Partner profile that provides an overview of the company and summary information about its involvement in EPA's voluntary methane programs.
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MidAmerican Energy Co. Methane Challenge Partner Profile
Partner profile that provides an overview of the company and summary information about its involvement in EPA's voluntary methane programs.
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Reciprocating Compressors
A reciprocating compressor is used to increase the pressure of natural gas in pipelines. Reciprocating compressors vent natural gas from piston rod packing systems during normal operation.
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Storage Tanks
Storage tanks are used to hold oil and gas condensate and operate near atmospheric pressure. Gases dissolved in the oil and condensate 'flash' out of the liquid phase. These vapors, rich in methane, may be vented to the atmosphere.
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Pipeline Pig Launching and Receiving
Pipeline pigging is the practice of cleaning and/or inspecting pipelines. During pigging operations, the pig is inserted into the pipeline and is forced through by pipeline pressure or by using compressed gas.
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Fish Images to Use with Fish Advisories
The U.S. Environmental Protection Agency developed a set of images to convey fish parts that should not be eaten to reduce possible exposure to chemicals among fish-eating populations.
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Optimize Glycol Circulation
During the glycol regeneration process, absorbed methane is vented at a rate directly proportional to the glycol circulation. Optimization of glycol circulation rates can reduce methane emissions at negligible cost.
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Methanol Injection
Replacing a glycol dehydrator with methanol injection inhibits hydrate formation and eliminates dehydrator emissions.
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Glycol Dehydrators
Glycol dehydrators are used to remove water from gas. The glycol absorbs water and methane when contacted with the wet gas. Glycol is then regenerated, where absorbed methane is vented to the atmosphere along with the water vapor.
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Equipment Leaks
Equipment leaks, commonly referred to as fugitive emissions, are characterized as unintentional emissions. Leaks occur from equipment components such as connectors, valves, open-ended lines, pressure relief valves, and storage tank thief hatches.
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RSIG3D Local/Remote CMAQ File Reader
RSIG3D instructions for reading local and/or remote CMAQ files
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Engine Exhaust
Natural gas-fired engines and turbines are used to run compressors throughout the natural gas value chain. In many operations, the natural gas stream is used to power these engines and turbines. Methane emissions result from incomplete combustion.