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BS EN 14797:2006

Current
Current

The latest, up-to-date edition.

Explosion venting devices
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

02-28-2007

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Design requirements
   4.1 General
   4.2 Potential sources of ignition
5 Types of explosion venting devices
   5.1 Explosion venting devices with reusable elements
   5.2 Explosion venting devices with non reusable elements
6 Back pressure supports
   6.1 General
   6.2 Opening back pressure supports
   6.3 Non-opening back pressure supports
7 Testing of explosion venting devices
   7.1 General
   7.2 Static activation pressure
   7.3 Explosion testing
8 Information for use
9 Assembly, replacements or reusability
10 Marking
   10.1 General
   10.2 Explosion venting devices with reusable retaining
        elements
   10.3 Explosion venting devices with non-reusable
        retaining elements
   10.4 Omission of markings
11 Packaging
   11.1 General
   11.2 Marking
Annex A (informative) Examples for explosion venting devices
      A.1 Re-closing explosion venting devices
      A.2 Devices which require manual repositioning or
          replacement of the retaining element
      A.3 Devices with non reusable elements
Annex B (informative) Service and maintenance
      B.1 General
      B.2 Servicing
Annex ZA (informative) Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 94/9/EC
Bibliography
Figures
Tables

Describes the requirements for venting devices used to protect enclosures against the major effects of internal explosions arising from the rapid burning of suspended dust, vapour or gas contained within. It includes the requirements for the design, inspection, testing, marking, documentation and packaging.

This European Standard specifies the requirements for venting devices used to protect enclosures against the major effects of internal explosions arising from the rapid burning of suspended dust, vapour or gas contained within. It includes the requirements for the design, inspection, testing, marking, documentation and packaging. This European Standard specifies explosion venting devices which are put on the market as autonomous protective systems.

Explosion venting devices are safety devices comprised of a pressure sensitive membrane fixed to and forming part of the structure that it protects, designed to intervene in the event of an explosion at a predetermined low pressure, to immediately open a vent area sufficient to ensure that the maximum pressure attained by the explosion within the enclosure does not exceed its designed resistance to pressure.

The application and specification of explosion venting devices is outlined for dust explosion protection in EN 14491 and for gas explosion protection in prEN 14994. The use of venting devices according to this European Standard on pipelines and on applications other than described in EN 14491 or prEN 14994 needs to be carefully evaluated and where appropriate their suitability needs to be confirmed by tests.

Flameless explosion venting devices avoid the breakthrough of flames into the surroundings. They are used to allow explosion venting in situations where the hazards of flames resulting from the venting action are not acceptable. Flameless explosion venting devices are treated in a separate standard.

This European Standard does not cover details for the avoidance of ignition sources from detection devices or other parts of the venting devices.

Committee
EXL/23
DevelopmentNote
Supersedes 03/118986 DC (02/2007)
DocumentType
Standard
Pages
32
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
NEN EN 14797 : 2007 Identical
NF EN 14797 : 2007 Identical
SN EN 14797 : 2007 Identical
NS EN 14797 : 1ED 2006 Identical
I.S. EN 14797:2006 Identical
NBN EN 14797 : 2007 Identical
UNE-EN 14797:2007 Identical
UNI EN 14797 : 2007 Identical
EN 14797:2006 Identical
DIN EN 14797:2007-03 Identical
DIN EN 14797 E : 2007 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 5908-2:2012 Fire and explosion precautions at premises handling flammable gases, liquids and dusts 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

EN 1127-1:2011 Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and methodology
EN 13980:2002 Potentially explosive atmospheres - Application of quality systems
EN 60079-0:2012/A11:2013 EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS (IEC 60079-0:2011, MODIFIED)
EN 13463-1:2009 Non-electrical equipment for use in potentially explosive atmospheres - Part 1: Basic method and requirements
IEC 61241-0:2004 Electrical apparatus for use in the presence of combustible dust - Part 0: General requirements
EN 13237:2012 Potentially explosive atmospheres - Terms and definitions for equipment and protective systems intended for use in potentially explosive atmospheres
EN 14491:2012 Dust explosion venting protective systems
IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
ISO 4126-2:2003 Safety devices for protection against excessive pressure Part 2: Bursting disc safety devices
IEC 60079-0:2011 Explosive atmospheres - Part 0: Equipment - General requirements
EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
EN ISO 4126-2:2003/AC:2006 SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 2: BURSTING DISC SAFETY DEVICES
1994/9/EC : 1994 DIRECTIVE 94/9/EC OF THE EUROPEAN PARLIAMENT AND THE COUNCIL OF 23 MARCH 1994 ON THE APPROXIMATION OF THE LAWS OF THE MEMBER STATES CONCERNING EQUIPMENT AND PROTECTIVE SYSTEMS INTENDED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES

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