Intermediate report of the Secretariat on activities of CEN/TC 305 "Potentially explosive atmospheres Explosion prevention and protection"
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1 N 926 "Potentially explosive atmospheres Explosion prevention and protection" Intermediate report of the Secretariat on activities of 305 "Potentially explosive atmospheres Explosion prevention and protection" 1 Constitution Scope Standardisation in the field of explosion prevention and protection. Drawing up of standards relating to test methods for determining the flammability characteristics of substances, equipment and protective systems for use in potentially explosive atmospheres, equipment and systems for explosion prevention and protection and terminology and methodology in the field of potentially explosive atmospheres. Members of 305 are the 32 member bodies of CEN, the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. NOTE: Turkey became member of CEN and CENELEC on Chairman of 305: Prof. Dr.-Ing. Siegfried Radandt, Germany Secretariat of 305: Dipl.-Phys. Thomas von Hoegen, DIN, Germany. Liaisons: Commission of the European Communities (CEC) European Chemical Industry Council (CEFIC) European Trade Union Technical Bureau for Health and Safety (TUTB) CENELEC/TC 31 Electrical apparatus for explosive atmospheres: General requirements Industrial valves Industrial trucks Food processing machinery - Safety and hygiene specifications Conveyor belts Fixed fire fighting systems Machines for underground mines Safety SECRETARIAT DIN DEUTSCHES INSTITUT FÜR NORMUNG e.v. mailing address: Berlin Tel: Fax:
2 Pumps Internal combustion engines Liquefied petroleum gas equipment and accessories 2 Organization The following working groups are set up under 305: WG 1 WG 2 WG3 WG4 WG5 Test methods for determining the flammability characteristics of substances Convener: Dr. Sheila Beattie, United Kingdom Secretariat: Dr. Stephen Puttick, Syngenta, UK Equipment for use in potentially explosive atmospheres Convener: Alan Tyldesley, United Kingdom Secretariat: DIN, Anke Sachtleben, DE Devices and systems for explosion prevention and protection Convener: Dr. Kees van Wingerden, Norway Secretariat: DIN, Anke Sachtleben, DE Terminology and Methodology Convener: Dr. Albrecht Vogl, DE Secretariat: DIN, Anke Sachtleben, DE Equipment and protection systems for mining Convener: Dr. Elmar Fuchs, Germany Secretariat: DIN, Hans Georg Blasgude, DE 3 Plenary meetings 1 st Mannheim, Germany /06 Report: N 19 2 nd St. Denijs, Belgium /23 Report: N 43 3 rd Antwerp, Belgium /07 Report: N 70 4 th Bergen, Norway /22 Report: N th Lucerne, Switzerland /08 Report: N th Paris, France Report: N th London, United Kingdom /26 Report: N th Berlin, Germany /07 Report: N th Mannheim, Germany Report: N th Oslo, Norway Report: N th Berlin, Germany Report: N th Stockholm, Sweden Report: N th Prague, Czech Republic /05 Report: N 663 (meeting together with CENELEC/TC 31) 14 th Berlin, Germany /16 Report: N 729 (meeting together with CENELEC/TC 31) 15 th Dublin, Ireland /30 Report: N 783 (meeting together with CENELEC/TC 31) 2
3 16 th Braunschweig, Germany /29 Report: N 871 (meeting together with CENELEC/TC 31) 17 th Milan, Italy /24 Report: N 921 (meeting together with CENELEC/TC 31) 4 Published European Standards and CEN Technical Reports 4.1 Production of the last five years 2006: 7 documents 2007: 8 documents 2008: 2 documents 2009: 2 documents 2010: 1 document 2011: 10 documents: EN , EN 15967, EN , EN 16020, EN 16009, EN ISO/IEC , amendments to EN to List of all documents published by 305: EN :20011 WG 4 Explosive atmospheres Explosion prevention and protection Part 1: Basic concepts and methodology EN :2002+A1:2008 WG 5 Explosive atmospheres Explosion prevention and protection Part 2: Basic concepts and methodology for mining EN 1710:2005+A1:2008 WG 5 Equipment and components intended for use in potentially explosive atmospheres in underground mines EN 1839:2003 WG 1 Determination of explosion limits of gases and vapours EN 13237:2003 WG 4 Potentially explosive atmospheres Terms and definitions for equipment and protective systems intended for use in potentially explosive atmospheres EN :2009 WG 2 Non-electrical equipment for potentially explosive atmospheres Part 1: Basic method and requirements EN :2004 WG 2 Non-electrical equipment for use in potentially explosive atmospheres Part 2: Protection by flow restricting enclosure "fr" EN :2005 WG 2 Non-electrical equipment for use in potentially explosive atmospheres Part 3: Protection by flame proof enclosure "d" EN :2011 WG 2 Non-electrical equipment for potentially explosive atmospheres Part 5: Protection by constructional safety "c" EN :2005 WG 2 Non-electrical equipment for use in potentially explosive atmospheres Part 6: Protection by control of ignition source "b" 3
4 EN :2003 WG 2 Non-electrical equipment for potentially explosive atmospheres Part 8: Protection by liquid immersion "k" EN 13821:2002 WG 1 Potentially explosive atmospheres Explosion prevention and protection Determination of minimum ignition energy of dust/ air mixtures EN :2004+A1:20011 WG 1 Determination of explosion characteristics of dust clouds Part 1: Determination of the maximum explosion pressure p max of dust clouds EN :2006+A1:20011 WG 1 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 :2006+A1:20011 WG 1 Determination of explosion characteristics of dust clouds Part 3: Determination of the lower explosion limit LEL of dust clouds EN :2004+A1:20011 WG 1 Determination of explosion characteristics of dust clouds Part 4: Determination of the limiting oxygen concentration LOC of dust clouds EN 14373:2005 WG 3 Explosion suppression systems EN 14460:2006 WG 3 Explosion resistant equipment EN 14491: Corrigendum 2008 Dust explosion venting protective systems WG3 EN 14522:2005 WG 1 Determination of the auto ignition temperature of gases and vapours EN : Corrigendum:2006 WG 5 Explosion prevention and protection in underground mines Protective systems Part 1: 2-bar explosion proof ventilation structure EN : Corrigendum 2008 Explosion prevention and protection in underground mines Protective systems Part 2: Passive water trough barriers EN : Corrigendum 2008 Explosion prevention and protection in underground mines Protective systems Part 4: Automatic extinguishing systems for road headers WG5 WG5 4
5 EN 14756:2006 WG 1 Determination of the limiting oxygen concentration (LOC) for flammable gases and vapours EN 14797:2006 WG 3 Explosion venting devices EN 14983:2007 WG 5 Explosion prevention and protection in underground mines Equipment and protective systems for firedamp drainage EN 14986: 2007 WG 2 Design of fans working in potentially explosive atmospheres EN 14994:2007 WG 3 Gas explosion venting protective systems EN 15089:2009 WG 3 Explosion isolation systems EN 15188:2007 WG 1 Determination of the spontaneous ignition behaviour of dust accumulations EN 15198:2007 WG 4 Methodology for the ignition hazard assessment of non-electrical equipment and components for intended use in potentially explosive atmospheres EN 15233:2007 WG 4 Methodology for functional safety assessment of protective systems for potentially explosive atmospheres EN 15967:2011 WG 1 Determination of maximum explosion pressure and the maximum rate of pressure rise of gases and vapours EN 16009:2011 WG 3 Flameless explosion venting devices EN 16020:2011 WG 3 Explosion diverters EN ISO 16852:2010 WG 3 Flame arrester Performance requirements, test methods and limits for use (ISO 16852:2008, including Cor 1:2008 and Cor 2:2009) CEN/TR 15281:2006 WG 3 Guidance on inerting for the prevention of explosions EN ISO/IEC :2011 WG 4 Explosive atmospheres - Part 34: Application of quality systems for equipment manufacture (ISO/IEC DIS :2011) 5 Program of work The projects in the table below are in the order of drafting body (working group), then WI status (active or waiting/preliminary), then ordered by WI number. 5
6 Drafting Body WI Number Reference 305/WG 1 ' FprEN /WG 1 ' /WG 1 ' /WG 1 ' /WG 1 ' /WG 1 ' /WG 2 ' pren rev pren rev pren rev pren ISO pren ISO/IEC Title WI Status Registration Last Milestone Name Last Realised Milestone Forecast Determination of explosion limits of gases and vapours Active Dispatch of FV draft to CMC Submission to Vote March 2012 Determination of explosion characteristics of dust clouds - Part 1: Determination of the maximum explosion pressure pmax of dust clouds and Determination of the maximum Circulation of rate of explosion pressure rise WI 1st Working (dp/dt)max of dust clouds Active proposal - Accept Document Determination of the spontaneous ignition behaviour of dust accumulations Combustion propagation behaviour of dust layers by classification into burning classes Determination of the limiting oxygen concentration (LOC) for flammable gases and vapours Explosive atmospheres - Part 20-1: Material characteristics for gas and vapour classification test methods and data Explosive atmospheres - Nonelectrical equipment for use in explosive atmospheres - Basic method and requirements Active stage Accept stage Accept stage Accept stage Accept ISO-CEN WI proposal - Accept Parallel enquiry May 2012 SECRETARIAT DIN DEUTSCHES INSTITUT FÜR NORMUNG e.v. mailing address: Berlin Tel: Fax:
7 Drafting Body WI Number Reference Title WI Status Registration Explosive atmospheres - Nonelectrical equipment for use in explosive atmospheres - Non electrical type of protection constructional safety, control of ignition source, liquid immersion Active Last Milestone Name Last Realised Milestone Forecast ISO-CEN 305/WG 2 ' pren ISO/IEC WI proposal - Accept Parallel enquiry May 2012 Design of fans working in pren potentially explosive 305/WG 2 ' rev atmospheres stage Accept Circulation of WI 1st Working 305/WG 3 ' Explosion isolation flap valves Active proposal - Accept Document Dust explosion venting Dispatch of FV draft Submission to 305/WG 3 ' FprEN protective systems Active to CMC Vote Explosion prevention and 305/WG 3 ' protection for bucket elevators stage Accept Screw Conveyors and product receivers as explosion 305/WG 3 ' isolation systems stage Accept pren /WG 3 ' rev Explosion resistant equipment stage Accept pren Explosion suppression 305/WG 3 ' rev systems stage Accept pren /WG 3 ' rev Explosion venting devices stage Accept Potentially explosive Dispatch of 305/WG 4 ' pren atmospheres - Terms and Active Closure of enquiry FV draft to
8 Drafting Body WI Number 305/WG 5 ' Reference pren ISO/IEC Title definitions for equipment and protective systems intended for use in potentially explosive atmospheres Explosive atmospheres - Equipment and components in explosive atmospheres in underground mines WI Status Registration Last Milestone Name Last Realised Milestone CMC Forecast ISO/IEC-CEN Parallel stage enquiry May
9 Deleted project from the active program of work: None. 7 Regular review of standards The following standards were up to systematic 5-years review in 2011: EN 14756:2006 Determination of the limiting oxygen concentration (LOC) for flammable gases and vapours - confirmed EN 14797:2006 Explosion venting devices - confirmed EN 14491:2006 Dust explosion venting protective systems- confirmed The following standards are up to systematic 5-years review in 2012: EN 15188:2007 Determination of the spontaneous ignition behaviour of dust accumulations EN 14994:2007 Gas explosion venting protective systems EN 14983:2007 Explosion prevention and protection in underground mines - Equipment and protective systems for firedamp drainage EN :2007 Explosion prevention and protection in underground mines - Protective systems - Part 4: Automatic extinguishing systems for road headers EN :2007 Explosion prevention and protection in underground mines - Protective systems - Part 2: Passive water trough barriers EN :2002+A1:2008 Explosive atmospheres - Explosion prevention and protection - Part 2: Basic concepts and methodology for mining EN 1710:2005+A1:2008 Equipment and components intended for use in potentially explosive atmospheres in underground mines th plenary meeting on /24 Remark from TC secretary In the plenary meeting of 305 the following resolution was taken: RESOLUTION 233/2011 taken by 305 on in principle agrees to the draft Commission mandate for standardisation in the field of equipment used in the offshore oil and gas industry (document 305 N 906) but cannot agree to the proposed timetable. 305 asks WG 2 and WG 3 to propose specific possible projects before the end of The following two projects were proposed and agreed upon by the TC members by postal ballot after the plenary meeting. - Explosion venting devices for compressor buildings and offshore modules. - Explosion testing of passive fire protection systems. A detailed description of the two proposals will be provided to the CCMC by separate mail. 9. Joint meeting of CLC/TC31 and 305 on the 24 th October 2011 Experience with the new format of Annex ZY "State of the art" It was concluded that the 305 and CENELEC/TC 31 are dealing with the issue of the Annex ZY in a satisfactory manner. Whether the concept of Annex ZY will be taken over by IEC/TC 31 is under discussion. SECRETARIAT DIN DEUTSCHES INSTITUT FÜR NORMUNG e.v. mailing address: Berlin Tel: Fax:
10 The draft proposals for projects under draft Commission mandate for standardisation in the field of equipment used in the offshore oil and gas industry were discussed in the joint meeting. There were no objections against the proposals from 305 as mentioned under item 8. 8 Co-operation with IEC/TC 31/SC 31M 8.1 Plenary meetings of IEC/TC 31/SC 31M 1st Kuala Lumpur, Malaysia Report: N 672 2nd Sao Paulo, Brazil Report: N 732 3rd Tel Aviv, Israel Report: N 788 4th Seattle, US Report: N 860 5th Melbourne, AU Report: N List of projects in IEC/TC 31 SC 31M ISO DIS Ed. 1.0: Explosive atmospheres - Non-electrical equipment for use in explosive atmospheres - Basic method and requirements (basis: EN ) The Committee Draft for voting (equal to the DIS stage in ISO) has been prepared by the project team in SC 31M. The enquiry will be launched in the second quarter of 2012 in parallel with 305. NOTE: This document deals primarily with non-electrical issues. Following the agreement between ISO/TMB and IEC/SMB this document will become an ISO-standard. Project leader: Thierry Houeix, France ISO DIS Ed. 1.0: Explosive atmospheres - Non-electrical equipment for use in explosive atmospheres - Non electrical type of protection constructional safety 'c', control of ignition source 'b', liquid immersion 'k' (basis: EN , EN , EN ) The Committee Draft for voting (equal to the DIS stage in ISO) has been prepared by the project team in SC 31M. The enquiry will be launched in the second quarter of 2012 in parallel with 305. NOTE: This document deals primarily with non-electrical issues. Following the agreement between ISO/TMB and IEC/SMB this document will become an ISO-standard. Project leader: Konrad Brehm, Germany. ISO/IEC CDV Explosive atmospheres - Non-electrical equipment for use in explosive atmospheres - Part 38: Equipment and components in explosive atmospheres in underground mines (basis: EN 1710) The Committee Draft for voting (equal to the DIS stage in ISO) has been prepared by the project team in SC 31M. The enquiry will be launched in the second quarter of 2012 in parallel with 305. NOTE: This document deals with electrical as well as non-electrical issues. Following the agreement between ISO/TMB and IEC/SMB this document will become a double logo ISO/IEC-standard. Project leader: Dr Fuchs, Germany MT Explosive atmospheres - Part 20-1: Material characteristics for gas and vapour classification test methods and data from TC 31 to SC 31M IEC Ed.1 has been published in January Within this document the old standards and reports IEC , -4, -4A, -12 and -20 have been merged. In its plenary meeting in October 2010 IEC/TC 31 has taken the decision to disband the previous MT and to start the Maintenance Procedure in IEC/SC 31M. Thus a new 10
11 MT has been established to maintain the IEC A call for experts was send out and sufficient experts have been nominated to start the maintenance work. NOTE: In October 2012 a joint meeting of MT and 305/WG 1 will take place within the IEC General Meeting in Oslo Maintenance team leader: Martin Thedens, Germany. MT Explosive atmospheres - Part 20-2: Material characteristics - Combustible dusts test methods This project has been transferred from IEC/TC 31/SC 31J. The last meeting of the MT took place in Melbourne (interim convenor Stephen Puttick, secretary 305/WG 1). The main achievement of this meeting was that an agreement could be found on all outstanding issues from the discussion about definitions. Maintenance team leader: Donald W. Ankele, US Under discussion: New project for protective systems The interest in this project has been expressed by individual experts from non-european countries, however there is still a lack of participation from outside of Europe in this group. It is expected that there will be a further meeting in 2012 of the ad-hoc-group 3. Convenor: Kees van Wingerden, Norway Thomas von Hoegen,
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