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NF ISO 23431:2021

Current

Current

Measurement of road tunnel air quality

Published date

09-01-2021

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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
ISO/TC 46
DocumentType
Standard
PublisherName
Association Francaise de Normalisation
Status
Current

Standards Relationship
ISO 23431:2021 Identical

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