ISO 23431:2021
Current
Measurement of road tunnel air quality
Hardcopy , PDF
English, French
03-19-2021
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.
| DocumentType |
Standard
|
| Pages |
31
|
| ProductNote |
This standard also refers to: ISO 6145.
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| SS-ISO 23431:2021 | Identical |
| NF ISO 23431:2021 | Identical |
| BS ISO 23431:2021 | Equivalent |
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