Supply Facility Maintenance

For stable operation of the main piping of 4,931km and 412 supply stations for nationwide supply of natural gas, 10 piping branches, 12 offices and 14 branch offices are operated and run in 24-hour emergency-ready system.

Main tasks

1Inspection and maintenance of machines, electricity, telecommunication, relay, measuring and calculating facilities in nationwide natural gas supply facilities and supplemental facilities
2Inspection and maintenance of the central command room and local control rooms
3Disassembly, inspection and maintenance of main facilities
4Recovery when emergency

Piping and offices

[Unit: km, office]

Piping and offices
Category	Supply piping(km)	Supply office(the number of offices)
Category	Supply piping(km)	Rated voltage control	Blocking control	Block valve	Total
Total	4,931	146	144	122	412
Seoul	413	17	9	12	38
Incheon	267	11	4	3	18
Gyeonggi	533	20	9	17	46
Gangwon	663	14	27	28	69
Daejeon Chungcheong	470	11	17	8	36
Jeonbuk	486	12	16	5	33
Gwangju Jeonnam	575	16	21	10	47
Daegu Gyeongbuk	814	21	27	21	69
Busan Gyeongnam	643	22	13	15	50
Jeju	67	2	1	3	6

Supply facilities

[Unit: unit]

Supply Facility
Category	Gas filter	Gas heater	Monostat	Measuring facility
Total	454	420	1002	741
Seoul	50	50	137	95
Incheon	38	44	103	67
Gyeonggi	53	57	141	107
Gangwon	52	36	91	67
Daejeon Chungcheong	39	29	63	47
Jeonbuk	39	36	94	71
Gwangju Jeonnam	56	42	96	84
Daegu Gyeongbuk	66	53	119	88
Busan Gyeongnam	55	63	136	104
Jeju	6	8	22	11

[Gas filter] Gas filtering facility to prevent damage on the facilities including monostat and flowmeter caused by foreign substances in the transported gas .
[Gas heater] Facility for heating the transported gas to prevent change of gas condition due to temperature drop when reducing pressure through monostat; and to prevent damage on other devices and piping at low temperature
[Monostat] Facility to reduce preset pressure of the transported high pressure gas
[Measuring facility] Facility to measure gas flow supplied to the customers.