Standard Swedish standard · SS-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: Valid

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.


Occupational safety, industrial hygiene (13.100) Welding equipment (25.160.30)

Product information

Language: English

Written by: AGS 449 Miljö, hälsa och säkerhet, SIS/TK 134/AG 09

International title:

Article no: STD-80020682

Edition: 1

Approved: 3/17/2020

No of pages: 20

Replaces: SS-EN ISO 15012-4:2016 , SS-EN ISO 15012-2:2008