BS EN ISO 21904-4:2020:2024 Edition
$102.76
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
| Published By | Publication Date | Number of Pages |
| BSI | 2024 | 20 |
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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 4 | European foreword Endorsement notice |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions 4 Captor hoods, nozzles and slot nozzles 4.1 Principle |
| 10 | 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 |
| 11 | 4.3.3 Procedure |
| 12 | 4.4 Test report |
| 13 | 5 On-torch extraction devices 5.1 Principle |
| 14 | 5.2 Apparatus 5.3 Test method 5.3.1 Test setup 5.3.2 Procedure |
| 15 | 5.4 Test report |
| 16 | Annex A (informative) Additional information for on-torch extraction |
| 18 | Bibliography |
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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…
