NBN EN 14034-3 : 2006 + A1 2011
Current
The latest, up-to-date edition.
DETERMINATION OF EXPLOSION CHARACTERISTICS OF DUST CLOUDS - PART 3: DETERMINATION OF THE LOWER EXPLOSION LIMIT LEL OF DUST CLOUDS
12-01-2013
Foreword
Introduction
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
5 Dust sample
6 Test procedure
7 Calibration and verification
7.1 Calibration
7.2 Verification
8 Safety precautions/instructions
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 Test procedure
Annex ZA (informative) Relationship between this European
Standard and the Essential
Requirements of EU Directive 94/9/EC
Bibliography
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