Abstract

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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.


General information 

  • Status
     :  Published
    Publication date
     : 2021-03
  • Edition
     : 1
    Number of pages
     : 31
  • Technical Committee
     : ISO/TC 146/SC 3 Ambient atmospheres
  • ICS
     :
    93.060 Tunnel construction
    13.040.20 Ambient atmospheres

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