NF EN ISO 21904-4

NF EN ISO 21904-4

March 2020
Standard Current

Health and safety in welding and allied processes - Equipment for capture and separation of welding fume - Part 4 : determination of the minimum air volume flow rate of capture devices

This document specifies two methods for establishing the minimum air volume flow rate. One method is dedicated for use with captor hoods, nozzles and slot nozzles with a ratio of slot length to hose diameter of 8:1 or less. The other method is dedicated for use with on-gun extraction devices. These methods are not applicable to down draught tables.

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Main informations

Collections

National standards and national normative documents

Thematics

Gestion des risques et SST, QSE, Sécurité

Publication date

March 2020

Number of pages

20 p.

Reference

NF EN ISO 21904-4

ICS Codes

13.040.30   Workplace atmospheres
13.100   Occupational safety. Industrial hygiene
25.160.30   Welding equipment

Classification index

A88-201-4

Print number

1

International kinship

ISO 21904-4:2020

European kinship

EN ISO 21904-4:2020
Sumary
Health and safety in welding and allied processes - Equipment for capture and separation of welding fume - Part 4 : determination of the minimum air volume flow rate of capture devices

This document specifies two methods for establishing the minimum air volume flow rate. One method is dedicated for use with captor hoods, nozzles and slot nozzles with a ratio of slot length to hose diameter of 8:1 or less. The other method is dedicated for use with on-gun extraction devices.

These methods are not applicable to down draught tables.

Replaced standards (1)
NF EN ISO 15012-2
June 2008
Standard Cancelled
Health and safety in welding and allied processes - Requirements, testing and marking of equipment for air filtration - Part 2 : determination of the minimum air volume flow rate of captor hoods and nozzles

Le présent document spécifie les exigences de sécurité concernant la séparation des fumées de soudage et décrit une méthode pour déterminer le débit d'air minimal des dispositifs d'extraction des fumées de soudage.

Table of contents
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  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Bouches de captage, buses et fentes aspirantes
  • 5 Torches aspirantes de soudage
  • Annexe A Informations complémentaires sur l'extraction par torche
  • Bibliographie
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