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
- Standard No.
- ISO 21904-4:2020
- Release Date
- 2020
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 21904-4:2020
- 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.
ISO 21904-4:2020 Referenced Document
- ISO 12100:2010 Safety of machinery - General principles for design - Risk assessment and risk reduction
- ISO 21904-1:2020 Health and safety in welding and allied processes — Equipment for capture and separation of welding fume — Part 1: General requirements
ISO 21904-4:2020 history
- 2020 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
