NS EN 14034-4 : 2004 + A1 2011
Current
The latest, up-to-date edition.
DETERMINATION OF EXPLOSION CHARACTERISTICS OF DUST CLOUDS - PART 4: DETERMINATION OF THE LIMITING OXYGEN CONCENTRATION LOC OF DUST CLOUDS
12-01-2013
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Test apparatus
4.1 General
4.2 Explosion vessel
4.3 Dust dispersion system (dust container, fast
acting valve, connecting tube, dust disperser)
4.4 Ignition source
4.5 Control unit
4.6 Pressure measuring system
4.7 Oxygen measuring system
4.8 System to create the inert gas/air-mixture
5 Dust sample
6 Test procedure
7 Calibration and verification
7.1 Calibration
7.2 Verification
8 Safety precautions/instructions for use
9 Alternative test equipment/procedures
10 Test report
Annex A (normative) Electro pneumatic valve
Annex B (normative) Dust disperser with 5 mm holes
Annex C (normative) 20 l sphere
C.1 General
C.2 Test apparatus
C.3 Test conditions
C.4 System to create the inert gas/air-mixture
C.5 Test procedure
Annex D (informative) Examples of procedures to determine
the LOC
Annex ZA (informative) Relationship between this European
Standard and the Essential Requirements of EU
Directive 94/9
Bibliography
Specifies a test method for the determination of the limiting oxygen concentration of dust clouds in a closed vessel under defined initial conditions of pressure and temperature.
| DevelopmentNote |
2004 Edition Re-Issued in April 2011 and incorporates AMD 1 2011. (05/2011)
|
| DocumentType |
Standard
|
| PublisherName |
Norwegian Standards (Norges Standardiseringsforbund)
|
| Status |
Current
|
| Standards | Relationship |
| DIN EN 14034-4:2011-04 | Identical |
| UNE-EN 14034-4:2005 | Identical |
| I.S. EN 14034-4:2004 | Identical |
| UNI EN 14034-4 : 2011 | Identical |
| BS EN 14034-4 : 2004 | Identical |
| EN 14034-4:2004+A1:2011 | Identical |
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