Which sequence correctly describes the order of major components in the gas system from source to customers?

Which sequence correctly describes the order of major components in the gas system from source to customers?

• A. Gas Wells -> City Gate Metering Station -> Gas Compressor -> Transmission Pipes -> LNG Plant -> Area Gas Regulator Station -> Customers.
• B. Gas Wells in the Gulf of Mexico, Canada, and Northern USA feed the Interstate Pipeline to the Gas Compressor at 600-1400 PSIG, then to the City Gate Metering Station, via Transmission Pipes at 125-350 PSIG to the Electric Generating Station, Area Gas Regulator Station, and the Liquid Natural Gas Plant, with the Area Gas Regulator Station distributing to residential and commercial customers.
• C. Gas Wells -> Transmission Pipelines -> Gas Compressor -> City Gate Metering Station -> Electric Generating Station.
• D. Gas Wells in the Gulf of Mexico, Canada, and Northern USA feed the Interstate Pipeline to the Gas Compressor at 600-1400 PSIG, then to the City Gate Metering Station, via Transmission Pipes at 125-350 PSIG to the Electric Generating Station, Area Gas Regulator Station, and the Liquid Natural Gas Plant, with the Area Gas Regulator Station distributing to residential and commercial customers.

Answer: (D)

Gas moves from production toward customers by first being prepared for long-distance transport, then measured and controlled before final distribution. The flow starts with gas produced at wells entering the interstate pipeline system, where it is boosted to the high pressure needed for transmission by a gas compressor. After that high-pressure movement, the gas reaches a city gate metering station where volume, pressure, and quality are measured and verified before continuing downstream. From there, the gas travels through transmission pipelines at a lower pressure toward end-use facilities, such as electric generating stations and other processing or storage points, with a pressure-reducing step handled at local regulator points so the gas can be safely distributed to customers. The correct sequence includes all these major components in the order shown: wells, interstate pipeline, gas compressor, city gate metering station, transmission pipelines, electric generating station, area regulator station, liquid natural gas plant, and finally distribution to residential and commercial customers. The other options either skip the regulator step, place it in the wrong part of the path, or omit key facilities, which breaks the logical progression from production to final delivery.

Gas moves from production toward customers by first being prepared for long-distance transport, then measured and controlled before final distribution. The flow starts with gas produced at wells entering the interstate pipeline system, where it is boosted to the high pressure needed for transmission by a gas compressor. After that high-pressure movement, the gas reaches a city gate metering station where volume, pressure, and quality are measured and verified before continuing downstream. From there, the gas travels through transmission pipelines at a lower pressure toward end-use facilities, such as electric generating stations and other processing or storage points, with a pressure-reducing step handled at local regulator points so the gas can be safely distributed to customers. The correct sequence includes all these major components in the order shown: wells, interstate pipeline, gas compressor, city gate metering station, transmission pipelines, electric generating station, area regulator station, liquid natural gas plant, and finally distribution to residential and commercial customers. The other options either skip the regulator step, place it in the wrong part of the path, or omit key facilities, which breaks the logical progression from production to final delivery.