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ISO 23431:2021
ISO 23431:2021 Measurement of road tunnel air quality
CDN $273.00
Description
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.
Edition
1
Published Date
2021-03-19
Status
PUBLISHED
Pages
31
Language
English
Format
Secure PDF
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Abstract
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.
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