RE: Hazardous Area Designations/Certifications
The areas Zone 1 and 2 are defined by EN 60079-14 EEx d is type of protection flameproof, defined by EN 50014, and is suitable in Zone 1. EEx n includes type of protection nA, nC, and nR, defined by EN 50021 and are suitable for Zone 2. Take a look at http://www.fmglobal.com/research_standard_testing/product_certification/s296 .html for an explanatory poster comparing US, EN, and IEC standards in this area. Bill Lawrence Senior Engineering Specialist, Hazardous Locations FM Approvals, an FMGlobal Enterprise 1151 Bos-Prov Tpke Norwood, MA 02062 781-255-4822 william.lawre...@fmglobal.com -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Chris Maxwell Sent: Monday, July 29, 2002 10:52 AM To: EMC-PSTC Internet Forum Subject: Hazardous Area Designations/Certifications Hi all, I have been asked a question regarding the following: use in a Zone 1 and Zone 2 classified area. This equipment shall be certified EEX d and EEx n by a relevant authority (e.g. BASEEFA, CENELEC etc.) and shall be suitable for Gas Group IIB and Temperature Class T3. Can anyone elaborate on the above information? What standard defines Zone 1 or Zone 2? What standard defines EEX d and EEX n? What about Gas Group IIB and Temperature Class T3? Any clarification, elaboration, elucidation and/or explanation that the group members could provide would certainly be appreciated. Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list attachment: winmail.dat
RE: Hazardous Area Designations/Certifications
Hi Chris, Classified area = hazardous location = an area where the atmosphere may be easily ignitable Class = type of hazard; Class 1 = gas vapours; 2 = combustible dust, 3 = ignitable fibers Zone = Frequency of the hazard; Zone 1 means hazard present frequently or for long periods; Zone 2 means hazard present only during maintenance or mishap (leaky valve); Zone 0 means hazard present continuously in normal use (the headspace above the flammable liquid in the holding tank, and the lid of the tank) EEx = Approved to the European version of the Ex standards d = a protection method = 'flameproof enclosure' - contain the explosion n = a protection method = 'non-incendive' - no hot surfaces Gas Group IIB = Ethylene family of gases T3 = maximum product surface temperature of 200 C, under fault conditions Relevant authority for Europe = Notified Body (Notified to the ATEX Directive 94/9/EC) You scratched the surface on a really big topic; here are some links for your education: http://europa.eu.int/comm/enterprise/atex/index.htm - ATEX (94/9/EC) home page, with links to harmonized standards and notified bodies http://europa.eu.int/comm/enterprise/atex/guide/guide_en.pdf - ATEX guideline http://www.iecex.com/home.htm - IEC-EX home (like the CB Scheme for Ex) http://www.ul.com/hazloc/ - UL's hazloc page http://www.epsilon-ltd.com/ - Epsilon Ltd., home page - lots of hazloc info http://www.extronics.com/Ex_Info/protection_concepts.html - EXTronics has a good protection concepts table here. You could impress the questioner by pointing out that 'EEx n' devices are not allowed in Zone 1 areas... I'm guessing you have a European customer who needs a Zone 2 rating - I don't really see network diagnostic equipment being needed in a Zone 1 or 0 location. The full product rating would then likely be: ATEX Group 2 Category IIB, EEx n IIB T3. By the way, the ATEX Directive, mandatory July 1, 2003,requires notification (certification by an ATEX Notified Body) of your quality system per prEN13890, which is essentially ISO9000:2000 + specific ATEX requirements. Periodic factory surviellence is mandated by the Directive (is this a first?). Also note that the Class/Division system of defining HAZLOCS is widely used in North America; although the Class/Zone system has been allowed since 1999 (re 1999NEC Articles 505-510), only one facility has adopted the Class/Zone system to date. There are three, largely separate, approvals efforts for HAZLOC equipment; the USA, Europe, and ROW. The USA requires listing by an OSHA-approved NRTL. Europe requires an ATEX Notification. ROW - Australia, Brazil, Japan, among others - issue a national cert based on IEC standards. Have fun. Doug Massey Lead Regulatory Engineer LXE, Inc. -Original Message- From: Chris Maxwell [mailto:chris.maxw...@nettest.com] Sent: Monday, July 29, 2002 10:52 AM To: EMC-PSTC Internet Forum Subject: Hazardous Area Designations/Certifications Hi all, I have been asked a question regarding the following: use in a Zone 1 and Zone 2 classified area. This equipment shall be certified EEX d and EEx n by a relevant authority (e.g. BASEEFA, CENELEC etc.) and shall be suitable for Gas Group IIB and Temperature Class T3. Can anyone elaborate on the above information? What standard defines Zone 1 or Zone 2? What standard defines EEX d and EEX n? What about Gas Group IIB and Temperature Class T3? Any clarification, elaboration, elucidation and/or explanation that the group members could provide would certainly be appreciated. Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald:
RE: Hazardous Area Designations/Certifications
Chris, This brings back a lot of memories; my first job out of college was with Factory Mutual Research Corporation (www.fmglobal.com) doing hazardous location approvals. Instead of reinventing the wheel (and digging deep into memory), here's a link to an excellent primer on explosion protection by R. Stahl, one of my first clients. http://www.rstahl.com/Exprotection/index.htm Click on the pdf Basics of Explosion Protection for an in depth look at this subject. It's about 4.5 Mb. The answers to your questions are in there plus a whole lot more. Good luck and best regards, Dave Lorusso Lorusso Technologies, LLC www.lorusso.com 512.695.5871 -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Chris Maxwell Sent: Monday, July 29, 2002 9:52 AM To: EMC-PSTC Internet Forum Subject: Hazardous Area Designations/Certifications Hi all, I have been asked a question regarding the following: use in a Zone 1 and Zone 2 classified area. This equipment shall be certified EEX d and EEx n by a relevant authority (e.g. BASEEFA, CENELEC etc.) and shall be suitable for Gas Group IIB and Temperature Class T3. Can anyone elaborate on the above information? What standard defines Zone 1 or Zone 2? What standard defines EEX d and EEX n? What about Gas Group IIB and Temperature Class T3? Any clarification, elaboration, elucidation and/or explanation that the group members could provide would certainly be appreciated. Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
RE: Hazardous Area Designations/Certifications
Chris, Looks like you're dealing with equipment for use in explosive atmosphere's legislation/standards. The exact details vary a bit depending on the world-region (US, Europe, etc...). One of the basic how to determine zones documents is IEC 60079-10 and its few clones. Watch out also for the two so-called ATEX directives comming down the pike in Europe. Optional now, mandatory in May 2003. There is one for the workplace and one for the equipment that goes into the workplace. Cheers, Lauren Crane TUV America -Original Message- From: Chris Maxwell To: EMC-PSTC Internet Forum Sent: 7/29/2002 10:51 AM Subject: Hazardous Area Designations/Certifications Hi all, I have been asked a question regarding the following: use in a Zone 1 and Zone 2 classified area. This equipment shall be certified EEX d and EEx n by a relevant authority (e.g. BASEEFA, CENELEC etc.) and shall be suitable for Gas Group IIB and Temperature Class T3. Can anyone elaborate on the above information? What standard defines Zone 1 or Zone 2? What standard defines EEX d and EEX n? What about Gas Group IIB and Temperature Class T3? Any clarification, elaboration, elucidation and/or explanation that the group members could provide would certainly be appreciated. Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
Re: Hazardous Area Designations/Certifications
Hello Chris, While I can't supply specifics, I expect you can find what you need on Links available on the Safety Link www.safetylink.com Once you arrive therein, using your browser's FIND function (Control-F in most browsers), search on the following terms: ATEX Ex Scheme HAZLOC Intrinsic Safety You will be delivered to links to sites with a plethora of info on these subjects. Best regards, Art Michael, Webmaster - the Safety Link On Mon, 29 Jul 2002, Chris Maxwell wrote: Hi all, I have been asked a question regarding the following: use in a Zone 1 and Zone 2 classified area. This equipment shall be certified EEX d and EEx n by a relevant authority (e.g. BASEEFA, CENELEC etc.) and shall be suitable for Gas Group IIB and Temperature Class T3. Can anyone elaborate on the above information? What standard defines Zone 1 or Zone 2? What standard defines EEX d and EEX n? What about Gas Group IIB and Temperature Class T3? Any clarification, elaboration, elucidation and/or explanation that the group members could provide would certainly be appreciated. Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
