||Main test method/standard
|Main substation (operation in normal working hours)
||Noise, power-frequency electric field, SF6, etc.
|Rail yard (operation in normal working hours)
||C6H14, C3H6O, C4H8O2, C6H12O2, C3H8O, C7H16, dust, noise, CO, CO2, NO2, SO2, CCR, metal fuse, etc.
|Running tunnel (operation at 0:00-4:00)
||Dust, CO, CO2, C6H6, C7H8, C8H10, etc.
|Railway station (operation in normal working hours)
||CH?O, power frequency, noise, microwave, CO, CO2, H2S, NH3, etc.
|Cab (operation in normal working hours)
||Noise, power-frequency electric field, etc.
|Control center (operation in normal working hours)
||Power-frequency electric field, dust, noise, etc.
Sampling basis: Specifications of air sampling for hazardous substances monitoring in the workplace (GBZ 159), etc.
Test basis: Methods for determination of toxic substances in the air of workplaces (GBZ/T 160), Measurement of physical agents in workplace (GBZ/T 189), Determination of dust in the air of workplace (GBZ/T 192), etc.
Design basis: Classification of occupational hazards at workplaces (GBZ/T229), Occupational exposure limits for hazardous agents in the workplace, etc.