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002004003001

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home   Safety & Environment  Summary  2007
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Seoul metropolitan rapid transit corporation is always trying its best to provide passengers with clean subway environments and thus announced air quality measurement results of the underground stations as follows.

SUBWAY AIR QUALITY STANDARDS

Required Standards (tested once a year)
Required standards
Minute Dust Particle
(㎍/㎥·day)
Carbon Dioxide
(ppm)
Formaldehyde
(㎍/㎥)
Carbon Monoxide
(ppm)
150 1000 120 10
Recommended Standard (tested once every 2 years)
Recommended Standard (tested once every 2 years)
Carbon Dioxide
(ppm)
Radon
(pCi/ℓ)
Volatile Organic
Chemical Compound(㎍/㎥)
Asbestos
(quantity/㏄)
Ozone
(ppm)
0.05 4.0 500 0.01 0.06
  • Air Quality Standard of the Air Quality Maintenance Law for Multi-Purpose Facilities (Announced 2004/05/30)

YEAR 2007 MEASUREMENT STATUS

  • Measurement Period : 2007. 6. 18 ~ 12. 20
  • Measurement Targets : places: Total 144 underground stations of Line 5~8
  • Measurement Detail : 4 items of the standard maintenance of indoor air quality
                                       - Minute dust particles, Carbon Dioxide, Formaldehyde, Carbon Monoxide
  • Measurement Method : Measurement based on the Process Indoor Air Quality Testing Method
  • Measurement Company : Dae Myung Environment Management Co., Ltd.
                                            (Registered measurement agency business of the Ministry of Environment)
  • Questions or Comments : Environment management team Safety and Disaster Management Headquarters (6311-2106~7)
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