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...