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NBN EN 14034-4 : 2004 + A1 2011

Current
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
Published date

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 February 2011 & incorporates AMD 1 2011. (02/2011)
DocumentType
Standard
PublisherName
Belgian Standards
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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