UNE-EN ISO 21904-4:2020
Current
The latest, up-to-date edition.
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)
Hardcopy , PDF
Spanish, Castilian, English
27-05-2020
This part of ISO 21904 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.Neither method is applicable to down draught tables.
| Committee |
CTN 14
|
| DocumentType |
Standard
|
| Pages |
19
|
| PublisherName |
Asociación Española de Normalización
|
| Status |
Current
|
| Standards | Relationship |
| ISO 21904-4:2020 | Identical |
| EN ISO 21904-4:2020 | Identical |
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