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BS EN ISO 21904-4:2020 Health and safety in welding and allied processes. Equipment for capture and separation of welding fume - Determination of the minimum air volume flow rate of capture devices >
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BS EN ISO 21904-4:2020 Health and safety in welding and allied processes. Equipment for capture and separation of welding fume - Determination of the minimum air volume flow rate of capture devices, 2024
- undefined [Go to Page]
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Captor hoods, nozzles and slot nozzles
- 4.1 Principle
- 4.2 Apparatus
- 4.3 Test method
- 4.3.1 Test setup
- 4.3.2 Determination of the position of the entry and the measurement plane
- 4.3.3 Procedure
- 4.4 Test report
- 5 On-torch extraction devices
- 5.1 Principle
- 5.2 Apparatus
- 5.3 Test method
- 5.3.1 Test setup
- 5.3.2 Procedure
- 5.4 Test report
- Annex A (informative) Additional information for on-torch extraction
- Bibliography [Go to Page]