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Homepage>BS Standards>13 ENVIRONMENT. HEALTH PROTECTION. SAFETY>13.040 Air quality>13.040.20 Ambient atmospheres>20/30382325 DC BS ISO 23431. Measurement of road tunnel air quality
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immediate downloadReleased: 2020-04-09

20/30382325 DC

BS ISO 23431. Measurement of road tunnel air quality

CURRENCY
LANGUAGE
English
Standard number:20/30382325 DC
Pages:36
Released:2020-04-09
Status:Draft for Comment
DESCRIPTION
This standard 20/30382325 DC BS ISO 23431. Measurement of road tunnel air quality is classified in these ICS categories:
  • 13.040.20 Ambient atmospheres
  • 93.060 Tunnel construction

This Standard describes methods for determining air speed and flow direction, carbon monoxide (CO), nitric oxide (NO) and nitrogen dioxide (NO2) concentrations and visibility in road tunnels using direct-reading instruments. This Standard specifically excludes requirements relating to instrument conformance testing.


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