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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)

Publication date:   Jul 15, 2020

General information

60.60 Standard published   Mar 11, 2020

CEN

CEN/TC 121 Welding and allied processes

European Norm

13.100   Occupational safety. Industrial hygiene | 25.160.30   Welding equipment

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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.

Life cycle

PREVIOUSLY

WITHDRAWN
EN ISO 15012-2:2008

NOW

PUBLISHED
EN ISO 21904-4:2020
60.60 Standard published
Mar 11, 2020