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BS EN 15089:2009

Current

Current

The latest, up-to-date edition.

Explosion isolation systems

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-04-2009

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Explosion isolation systems
  4.1 General
  4.2 Isolation types
      4.2.1 Passive isolation type
      4.2.2 Active isolation type
5 Requirements of explosion isolation components
  5.1 General
  5.2 Detection devices
      5.2.1 General
      5.2.2 Optical detection
      5.2.3 Pressure detection
      5.2.4 Other actuation
  5.3 Indicating equipment (IE) and control and
      indicating equipment (CIE)
      5.3.1 General
      5.3.2 Indicating equipment
      5.3.3 Control and indicating equipment
  5.4 Safety integrity of control and indicating
      equipment (CIE)
      5.4.1 General
      5.4.2 Measures to avoid and control
            systematic faults
      5.4.3 Control of electric connections
      5.4.4 Indicators and messages on CIE
      5.4.5 Energy supply
  5.5 Explosion isolation devices
      5.5.1 General
      5.5.2 Explosion protection valve (active
            or passive) - F&P
      5.5.3 Extinguishing barrier (active) - F
      5.5.4 Rotary valve (passive) - F
      5.5.5 Explosion proof interlocked double
            valve arrangement (passive) - F&P
      5.5.6 Diverters, explosion isolation flaps and
            flame arresters
6 System design
  6.1 General
  6.2 Combination of explosion isolation systems
      with other explosion protection techniques
      6.2.1 Explosion resistant design for the
            maximum explosion pressure -
            isolation
      6.2.2 Venting - isolation
      6.2.3 Suppression - isolation
7 Experimental testing of the efficacy of an explosion
  isolation system
  7.1 General
  7.2 Test Modules
      7.2.1 General
      7.2.2 Module A: Explosion resistance
            testing
      7.2.3 Module B: Flameproof testing
      7.2.4 Module C: Functional testing
  7.3 Testing Report
8 Information for use
9 Marking
  9.1 Marking of the explosion isolation
      system
  9.2 Marking of components of an explosion
      isolation system
Annex A (informative) - Verification of design methods
      A.1 General
      A.2 Design on the basis of an interpretation of
          test results
      A.3 Mathematical model
Annex ZA (informative) - Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 94/9/EC
Bibliography

Specifies the general requirements for explosion isolation systems.

This European Standard describes the general requirements for explosion isolation systems. An explosion isolationsystem is a protective system, which prevents an explosion pressure wave and a flame or only a flame frompropagating via connecting pipes or ducts into other parts of apparatus or plant areas. This European Standard specifies methods for evaluating the efficacy of the various explosion isolation systems, and methods for evaluatingdesign tools for such explosion isolation systems when applying these in practice. This European Standard also sets out the criteria for alternative test methods and interpretation means to validate the efficacy of explosion isolations. It covers e.g.: general requirements for the explosion isolation components; evaluating the effectiveness of an explosion isolation system; evaluating design tools for explosion isolation systems. This European Standard is applicable only to the use of explosion isolation systems that are intended for avoiding explosion propagation between interconnected enclosures, in which an explosion may result as a consequence of ignition of an explosive mixtures e.g., dust-air mixtures, gas-(vapour-)air mixtures, dust-, gas-(vapour-)air mixtures and mists. In general explosion isolation systems are not designed to prevent the transmission of fire or burning powder either of which can initiate an explosion in downstream plant items. It is necessary to take this situation into account in risk assessments. This European Standard is only applicable for gas and dust explosions of chemically stable substances and mixtures of these (flame propagating at subsonic velocity). This European Standard is not applicable for explosions of materials listed below, or for mixtures containing some of those materials: i) chemically unstable substances that are liable to decompose; ii) explosive substances; iii) pyrotechnic substances. This European Standard does not cover flame arresters. For these devices refer to EN 12874.

Committee
EXL/23
DevelopmentNote
Supersedes 04/30125922 DC. (05/2009)
DocumentType
Standard
Pages
42
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
EN 15089:2009 Identical

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

EN 1127-1:2011 Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and methodology
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
EN 15233:2007 Methodology for functional safety assessment of protective systems for potentially explosive atmospheres
EN 14373:2005 Explosion suppression systems
EN ISO 14121-1:2007 Safety of machinery - Risk assessment - Part 1: Principles (ISO 14121-1:2007)
EN 13463-1:2009 Non-electrical equipment for use in potentially explosive atmospheres - Part 1: Basic method and requirements
EN 12874 : 2001 FLAME ARRESTERS - PERFORMANCE REQUIREMENTS, TEST METHODS AND LIMITS FOR USE
IEC 60079-18:2014 RLV Explosive atmospheres - Part 18: Equipment protection by encapsulation “m”
ISO 4225:1994 Air quality General aspects Vocabulary
EN ISO 13850:2015 Safety of machinery - Emergency stop function - Principles for design (ISO 13850:2015)
EN 54-2:1997/A1:2006 FIRE DETECTION AND FIRE ALARM SYSTEMS - PART 2: CONTROL AND INDICATING EQUIPMENT
EN 13673-2:2005 Determination of maximum explosion pressure and the maximum rate of pressure rise of gases and vapours - Part 2: Determination of the maximum rate of explosion pressure rise
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
EN 26184-2 : 1991 EXPLOSION PROTECTION SYSTEMS - DETERMINATION OF EXPLOSION INDICES OF COMBUSTIBLE GASES IN AIR
ISO 14121-1:2007 Safety of machinery Risk assessment Part 1: Principles
EN 13673-1:2003 Determination of the maximum explosion pressure and the maximum rate of pressure rise of gases and vapours - Part 1: Determination of the maximum explosion pressure
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
EN ISO 13849-1:2015 Safety of machinery - Safety-related parts of control systems - Part 1: General principles for design (ISO 13849-1:2015)
ISO 13850:2015 Safety of machinery Emergency stop function Principles for design
ISO 13849-1:2015 Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design
EN 13821:2002 Potentially explosive atmospheres - Explosion prevention and protection - Determination of minimum ignition energy of dust/air mixtures
EN 14994:2007 Gas explosion venting protective systems
ISO 6184-2:1985 Explosion protection systems Part 2: Determination of explosion indices of combustible gases in air
VDI 2263 Blatt 1:1990-05 Dust fires and dust explosions; hazards, assessment, protective measures; test methods for the determination of the safety characteristic of dusts

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