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ISO 23431:2021

Current Revision

Measurement of road tunnel air quality

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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. This document specifically excludes requirements relating to instrument conformance testing.


SDO ISO: International Organization for Standardization
Document Number ISO 23431
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO/TC 146/SC 3
Publish Date Document Id Type View
Not Available ISO 23431:2021 Revision