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KOGAS Pipeline Network

KOGAS 배관망 20인치에서 30인치 까지의 배관사용

The KOGAS pipeline network extends from the natural gas production bases in Incheon, Pyeongtaek, Tongyeong, and Samcheok, to the boundary lines of city gas companies or power plants in each region, with a total length of 5,140 km.

In general, pipes with a diameter of 20 to 30 inches are used, and the pressure of the gas passing through the pipe is between 8.5 and 70 kg/cm2, which is the force that can push water up to a height of 85 to 700 m vertically. In addition, KOGAS is supplying natural gas safely and stably by constructing a looped pipe network, so that it can be supplied in the reverse direction in case of emergency such as supply interruption.
  • 전국 배관망 현황

    ○ You can know the burial situation of the pipe around the gas pipe for excavation work and request the excavation work information support center ( www.eocs.or.kr, 1644-0001) to check the burial location information.

  • ○ KOGAS is implementing the sound management of pipelines buried nationwide through pipeline patrol, corrosion control, and ILI pigging.
    • Pipeline Patrol: Round-trip patrol of gas pipelines nationwide twice a day
    • Corrosion Control: To prevent corrosion of buried pipes, we always inspect them electrically, and we periodically check pipe condition at test box (TB)
    • In-Line-Inspection (ILI) Pigging: Intelligent pigs, robots that run inside pipelines, investigate physical defects and corrosion inside and outside the pipe. This is widely used in the United States, Canada, and Europe, especially for old pipes, and is considered the most accurate pipe inspection technology
    ○ For further information regarding our sound management activities, please contact the relevant office.
  • ○ Natural gas is colorless and odorless, but because of the addition of a harmless odorant, we can smell a unique gas odor in case of leakage.
    • In the event of a gas leak or unauthorized excavation around a pipe, please report it immediately to the relevant regional KOGAS headquarters, to Korea Gas Technology Corporation, or to Korea Gas Safety Corporation.
    • Contacts

    Move left and right.

    In case of an emergency, you can see the contact information of each region that you can be reported.
    KOGAS Korea Gas Technology Corporation Korea Gas Safety Corporation
    Seoul District Division 02)2657-1014 Seoul Branch 02)2657-1740 Excavation One - Call(www.eocs.or.kr) 1644-0001
    Incheon District Division 032)453-6700 Incheon Branch 032)566-6057
    Gyeonggi District Division 031)400-7204 Gyeonggi Branc 031)400-7399
    Gangwon District Division 033)760-6605 Gangwon Branch 033)760-6828
    Daejeon-Chungcheong District Division 042)229-3406 Daejeon-Chungcheong Branch 042)229-3670
    Jeonbuk District Division 063)850-3800 Jeonbuk Branch 063)850-3900
    Gwangju-Jeonnam District Division 062)950-1114 Gwangju-Jeonnam Branch 062)950-1400
    Daegu-Gyeongbuk District Division 053)850-1900 Daegu-Gyeongbuk Branch 053)850-1963
    Busan-Gyeongnam District Division 055)330-7700 Busan-Gyeongnam Branch 055)325-1395

Supply Management Office

공급관리소 이미지

Here at the supply management office, the high pressure at which natural gas is sent from the production base through underground pipeline is reduced to the pressure required for city gas companies or power plants, and the amount of supplied gas is measured. In the event of an emergency, supply is cut off, and the gas is discharged into the atmosphere through a diffusion tower.

The supply management office houses a valve to cut off supply, a gas heater that increases the temperature of the gas to meet the customers’ supply conditions and to prevent equipment damage due to temperature drop when pressure is lowered, a gas meter to measures the amount of gas supplied to the customer, and a diffusion tower that dissipates gas to prevent accidents. The functions of each supply management office differ depending on their importance as follows.
  • Governor Station

    In order to lower the pressure of natural gas being transported through the national gas pipeline network to the pressure required by city gas companies and power plants, a governor station is installed at each supply and demand point. This is in charge of metering, as well as blocking and dissipation functions in case of emergency.

  • Valve Station

    In case of emergencies such as accidents while supplying city gas, the valve station blocks and dissipates gas promptly to prevent the exacerbation of accidents.

  • Block Valve

    In case of emergencies such as accidents while supplying city gas, this simple management office quickly cuts off the gas supply to prevent the exacerbation of accidents.

  • Operational Monitoring and Control

    In KOGAS, where our primary management goal is to supply natural gas safely, the supply management office can monitor status and control supply on-site, but in case of emergency, remote monitoring and control can be performed from 9 regional control centers scattered around the country, and from a central control center located at the headquarters.

City Gas Companies

도시가스사 이미지

“City gas” refers to fuel gas that is industrially manufactured in a city, and sold to many consumers through supply pipes. Natural gas, naphtha, and liquefied petroleum gas (LPG) are used as main fuels, but natural gas is the main fuel in Korea.

In Korea’s natural gas business, wholesale and retail businesses are separated, so KOGAS carries out import and wholesale business, and city gas companies (private for-profit corporations) exclusively supply (retail) natural gas supplied by KOGAS to end users (general consumers) in each jurisdiction for residential, heating, and business purposes.

Power Plants

발전소 이미지

Natural gas is supplied as a direct energy source to general households and industries (for city gas), and as an indirect energy source to power plants for power generation.

  • Eligibility : Limited to plants that use natural gas for power generation, and have a capacity of at least 100 MW
  • Use : For LNG combined cycle power generation, and self-consumption power generation
  • Supply pressure : 23?33 kg/cm2 (However, Pyeongtaek’s pressure is 8.5 kg/cm2 + 10%)
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