ISO 23431:2021
Measurement of road tunnel air quality
OVERVIEW
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.
COMMENTS
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PRODUCT DETAILS
| Status | Current |
|---|---|
| Edition | 2021 |
| No. of Pages | 31 |
| ICS Classification | 93.060 Tunnel construction 13.040.20 Ambient atmospheres |
| Committee | ISO/TC 146/SC 3 |
| Available for Purchase | For sale in Singapore only |
| Adoption | ISO |