NF ISO 23431:2021
Current
Current
The latest, up-to-date edition.
Measurement of road tunnel air quality
Published date
01-09-2021
Publisher
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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.
| Committee |
ISO/TC 46
|
| DocumentType |
Standard
|
| PublisherName |
Association Francaise de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| ISO 23431:2021 | Identical |
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