DS/EN ISO 21904-4:2020

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 (ISO 21904-4:2020)


Status:
Current
Type:
Standard
Language:
English
Price from:
€ 61.05
Legislation:

Please note that this standard has not yet been harmonised and thus cannot be used for CE marking. Until harmonisation of this standard has been achieved, please use one of the following standards: 


Legislation

Please note that this standard has not yet been harmonised and thus cannot be used for CE marking. Until harmonisation of this standard has been achieved, please use one of the following standards: 

Links

Scope

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.


Number of pages: 24

Published: 2020-03-19

Date of approval: 2020-03-16

International relationships : EN ISO 21904-4:2020 IDT ISO 21904-4:2020 IDT

ICS: 25.160.30 - Welding equipment 13.100 - Occupational safety. Industrial hygiene

Item number: M330912


Committees

Committee

  • CEN/TC 121
  • CEN/TC 121/WG 9
  • ISO/TC 44/SC 9
  • ISO/TC 44/SC 9/WG 4

Danish committee

DS/S-047