International Standard
ISO 23431:2021
Measurement of road tunnel air quality
Reference number
ISO 23431:2021
Edition 1
2021-03
© ISO 2024
International Standard
Read sample
Published (Edition 1, 2021)

ISO 23431:2021

Format
Language
CHF 151
Convert Swiss francs (CHF) to your currency

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.

General information

  • Status
     : Published
    Publication date
     : 2021-03
    Stage
    : International Standard published [60.60]
  • Edition
     : 1
    Number of pages
     : 31
  • Technical Committee :
    ISO/TC 146/SC 3
    ICS :
    93.060  13.040.20 
  • RSS updates

Life cycle

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

  2. Store
  3. Standards catalogue
  4. TC
  5. ISO/TC 146/SC 3
  6. ISO 23431:2021