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BS EN 14491:2012

Current
Current

The latest, up-to-date edition.

Dust explosion venting protective systems
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

08-31-2012

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Venting of enclosures
5 Sizing of vent areas
6 Supplementary design considerations
7 Marking
8 Information for use
Annex A (informative) - Explosion venting of dust filters
Annex B (informative) - Explosion venting of cyclones
Annex C (informative) - Estimating the L/D ratio when
        calculating vent areas for elongated enclosures
Annex D (informative) - Protection of buildings
Annex E (informative) - Deflectors
Annex F (informative) - Significant changes between
        this European Standard and EN 14491:2006
Annex ZA (informative) - Relationship between this
         European Standard and the Essential Requirements
         of EU Directive 94/9/EC
Bibliography

Describes the basic requirements of design for the selection of a dust explosion venting protective system.

This European Standard specifies the basic requirements of design for the selection of a dust explosion venting protective system. This European Standard is one of a series including EN 14797, Explosion venting devices and EN 14460, Explosion resistant equipment. The three standards together represent the concept of dust explosion venting. To avoid transfer of explosions to other communicating equipment, one should also consider applying EN 15089 Explosion Isolation Systems.

This European Standard covers:

  • vent sizing to protect an enclosure against the internal pressure effects of a dust explosion;

  • flame and pressure effects outside the enclosure;

  • recoil forces;

  • influence of vent ducts;

  • hybrid mixtures.

This European Standard is not intended to provide design and application rules against effects generated by detonation reactions or runaway exothermic reactions. This European Standard does not cover fire risks arising from materials either processed, used or released by the equipment or from materials that make up equipment and buildings. This European Standard does not cover the design, construction, testing and certification of explosion venting devices that are used to achieve explosion venting1).

Committee
EXL/23
DevelopmentNote
Supersedes 02/540556 DC (07/2006) Supersedes 09/30190323 DC & 11/30247683 DC. (08/2012)
DocumentType
Standard
Pages
46
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
UNE-EN 14491:2006 Identical
SN EN 14491 : 2012 Identical
EN 14491:2012 Identical
NBN EN 14491 : 2012 Identical
NF EN 14491 : 2012 Identical
NS EN 14491 : 2012 Identical
NEN EN 14491 : 2012 Identical
DIN EN 14491:2012-10 Identical
I.S. EN 14491:2012 Identical
UNI EN 14491 : 2012 Identical
DIN EN 14491 E : 2012 Identical

12/30258579 DC : 0 BS 5908-1 - FIRE AND EXPLOSION PRECAUTIONS AT PREMISES HANDLING FLAMMABLE GASES, LIQUIDS AND DUSTS - PART 1: CODE OF PRACTICE FOR PRECAUTIONS AGAINST FIRE AND EXPLOSION IN CHEMICAL PLANTS, CHEMICAL STORAGE AND SIMILAR PREMISES
12/30258581 DC : 0 BS 5908-2 - FIRE AND EXPLOSION PRECAUTIONS AT PREMISES HANDLING FLAMMABLE GASES, LIQUIDS AND DUSTS - PART 2: GUIDE TO APPLICABLE STANDARDS AND REGULATIONS
BS 5908-1:2012 Fire and explosion precautions at premises handling flammable gases, liquids and dusts Code of practice for precautions against fire and explosion in chemical plants, chemical storage and similar premises
BS 5908-2:2012 Fire and explosion precautions at premises handling flammable gases, liquids and dusts Guide to applicable standards and regulations

EN 1127-1:2011 Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and methodology
EN 15089:2009 Explosion isolation systems
EN 16009:2011 Flameless explosion venting devices
EN 14034-2:2006+A1:2011 Determination of explosion characteristics of dust clouds - Part 2: Determination of the maximum rate of explosion pressure rise (dp/dt)max of dust clouds
VDI 3673 Blatt 1:2002-11 Pressure venting of dust explosions
EN 14797:2006 Explosion venting devices
EN 13237:2012 Potentially explosive atmospheres - Terms and definitions for equipment and protective systems intended for use in potentially explosive atmospheres
EN 14034-1:2004+A1:2011 Determination of explosion characteristics of dust clouds - Part 1: Determination of the maximum explosion pressure pmax of dust clouds

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