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SS-ISO 23431:2021

Current

Current

Outdoor air - Measurement of air quality in road tunnels

Published date

04-12-2021

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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
TC 146
DocumentType
Standard
ProductNote
This standard also refers to - ISO 6145
PublisherName
Standardiserings-Kommissionen I Sverige
Status
Current

Standards Relationship
ISO 23431:2021 Identical

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