ISO 21904-3:2018
Current
The latest, up-to-date edition.
Health and safety in welding and allied processes — Requirements, testing and marking of equipment for air filtration — Part 3: Determination of the capture efficiency of on-torch welding fume extraction devices
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
English, French
28-02-2018
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ISO 21904-3:2018 defines a laboratory method for measuring the welding fume capture efficiency of on-torch extraction systems. The procedure only prescribes a methodology, leaving selection of the test parameters to the user, so that the effect of different variables can be evaluated.
ISO 21904-3:2018 is applicable to integrated on-torch systems and to systems where a discrete extraction system is attached to the welding torch close to the arc area. The methodology is suitable for use with all continuous wire welding processes, all material types and all welding parameters.
The method can be used to evaluate the effects of variables such as extraction flow rate, extract nozzle position, shielding gas flow rate, welding geometry, welding torch angle, fume emission rate, etc., on capture efficiency.
| DevelopmentNote |
Supersedes ISO/FDIS 21904-3. (03/2018)
|
| DocumentType |
Standard
|
| Pages |
21
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| SS-EN ISO 21904-3:2018 | Identical |
| UNI EN ISO 21904-3 : 2018 | Identical |
| UNE-EN ISO 21904-3:2018 | Identical |
| EN ISO 21904-3:2018 | Identical |
| PN-EN ISO 21904-3:2018-05 | Identical |
| SN EN ISO 21904-3 : 2018 | Identical |
| DIN EN ISO 21904-3:2018-07 | Identical |
| BS EN ISO 21904-3:2018 | Identical |
| CEN/TR 16013-1:2010 | Workplace exposure - Guide for the use of direct-reading instruments for aerosol monitoring - Part 1: Choice of monitor for specific applications |
| ISO 5167-1:2003 | Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements |
| ISO 3966:2008 | Measurement of fluid flow in closed conduits Velocity area method using Pitot static tubes |
| ISO 6947:2011 | Welding and allied processes Welding positions |
| ISO 15767:2009 | Workplace atmospheres Controlling and characterizing uncertainty in weighing collected aerosols |
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