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ISO 23431

Measurement of road tunnel air quality

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Organization: ISO
Publication Date: 1 March 2021
Status: active
Page Count: 38
ICS Code (Ambient atmospheres): 13.040.20
ICS Code (Tunnel construction): 93.060
scope:

This document describes methods for determining air speed and flow direction, CO, NO and NO2 concentrations and visibility in road tunnels using direct-reading instruments. This document specifically excludes requirements relating to instrument conformance testing.

Document History

ISO 23431
March 1, 2021
Measurement of road tunnel air quality
This document describes methods for determining air speed and flow direction, CO, NO and NO2 concentrations and visibility in road tunnels using direct-reading instruments. This document specifically...

References

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