SS-EN-ISO-21904-4 › 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)

SS-EN-ISO-21904-4 - 2020 EDITION - CURRENT


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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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Designation Name

SS-EN ISO 21904-4:2020

Revision Level

2020 EDITION

Status

Current

Publication Date

March 17, 2020

Language(s)

English

Page Count

20

International Equivalent

EN ISO 21904-4:2020(IDT); ISO 21904-4:2020(IDT)