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1NTERNATIONAL ("WORLD CLASS") CEwIlFlCATlON FOR HAZARDOUS AREA ELECTRl CAL EQUIPMENT

The "IECEx" Scheme

A M Owler

Expo Safety Systems Ltd. UK

ABSTRACTThe paper out l i nes t he I ECEx schemecur r ent l y bei ng pr epar ed f or vot i ngw t hi n t he member shi p of t he I ECEE w t ht he obj ect i ve of est abl i shi ng a "Wor l dCl ass" Cert i f i cat i on scheme forel ectr i cal equi pment i nt ended t o beused i n Hazar dous Ar eas. Har moni sedst andards are t he start i ng poi nt wi t hI EC appoi nted Testi ng Houses i ssui ngI EC "Cer t i f i cat es of Conf or m t y" whi chwoul d be val i d worl dw de w t houtf ur t her test i ng or cer t i f i cat i on. Thepr oposal s ar e based on t he exi st i ngscheme w t hi n Eur ope and t he ri sks andbenefi t s ar e di scussed bot h f r om t hemanuf actur er' s and user' s poi nt ofvi ew.

I EC and I nter nat i onal St andardsI n Spr i ng 1992 t he I nt ernat i onalEl ect r otechni cal Comm ssi on ( I EC)i nvi t ed member countr i es to send"Exper t s" t o t he f i r st meet i ng of a newworki ng group t o tr y t o agree thepri nci pl es of an I nt er nat i onalCer t i f i cat i on Scheme f or el ectr i calequi pment used i n Hazar dous Ar eas e. g.Fl amepr oof Encl osur e, Pr essur i zed

Encl osure or I nt r i ns i cal l y Saf e. Themeet i ng took pl ace i n Tor ont o andcountr i es who sent del egates i ncl udedUK, USA, Canada, J apan, I t al y andSweden, wi t h i nter est al so s hown byAust r al i a, France, I ndi a and Sout hAf r i ca.

The r ol e of t he I EC i s t o producei nt ernat i onal l y accept abl e standards byhi ghl y democr at i c means and to per suademember countr i es to use t hem as t hei rnat i onal st andards. Someti mes exi st i ngnat i onal st andar ds ar e accept ed andbecome i nternat i onal " st andar ds" a goodexampl e of whi ch i s t he " 19i nch r ack"

whi ch has become t he uni ver sal way ofpackagi ng modul ar el ect r oni c equi pment .Even i n t he metr i c I EC st andar d

( I EC297) i t i s stated t hat t he st andardi s based on the "19i nch r ack"! I ECst andar ds have Engl i sh and Fr ench t ext ssi de by si de and ar e al so avai l abl e i nRussi an.

The exi st i ng I EC "CB" SchemeThere has been a cert i f i cat i on schemef or domesti c el ect r i cal equi pmentw t hi n t he I EC f or f our decades, theWCBM scheme, whi ch has had var yi ngdegr ees of success. I n. pr i nci pl e themanuf act ur er obt ai ns a t est r epor t f r oma part i ci pati ng test hduse and t hent akes t hat r eport t o hi s own nat i onalcer t i f yi ng body to obt ai n a cer t i f i cat eof conf orm ty for hi s countr y. I f hew shes t o export hi s product he canal so t ake the same t est r epor t t o eachcountr y wher e he w shes t o expor t andgai n a cer t i f i cat e f or t hat count r y aswel l . The benef i t of t he scheme i s t hatt he second t est house does not have t or epeat t he t est i ng and t he newcer t i f i cat e can be i ssued r i ght away.Each test house has i t s ow n "Mark" orlogo and t he manuf act urer i s t henl i censed to use t hat mark on hi sproduct.

There ar e several pr econdi t ' i ons f or t hescheme:

- t he count r i es have to appoi ntpar t i ci pat i ng test houses;

- t he nati onal st andards have t obe mutual l y al i gned so that theori gi nal t esti ng can be done to t hesame st andar d w t h t he same pass/ f ai lc r i t e r i a;

- t he manuf act urer has t o deci de,at t he desi gn st age, whi ch expor tmarket s he w shes to cover so that thet est i ng can accommodat e any m norvar i at i ons i n the nat i onal st andar dsf r omt he begi nni ng.The di f f i cul t i es w t h the scheme cent r e

around the need to obt ai n cer t i f i cat i oni n every count r y where export i ng i s t obe att empted and the mul t i pl i ci t y of

Electrical Safety in Hazardous Environments, 19-21 April 1994, Conference Publication No . 390, @ IEE, 1994

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r esul t i ng cert i f i cat es and marks.Exam nati on of some of t he pr oducts socert i f i ed e. g. a European mai nsoper at ed el ect r i c razor , r eveal s t hatt he pr oduct i s bar el y l arge enough tocar r y al l t he mar ks!

Anot her pr obl em i s t hat smal l nati onaldi f f erences i n t he st andards areper m t t ed t o sui t nat i onal t ast es andt he t est r epor t must test to al l t hedi f f erences ot her w se some subsequentr e- t est i ng may be necessary.

The Eur opean SchemeThe Eur opean Communi t y' s "Expl osi veAt mospheres Di r ect i ves" have been i noper at i on si nce 1979 and have gener al l ybeen ver y successful . The Di r ect i vesspeci f y par t i cul ar CENELEC st andar dsand defi ne t he cer t i f i cat i on pr ocedur e.

Standards A condi t i on ofmembershi p of CENELEC (Eur opeanComm t t ee f or El ect r otechni calSt andar di sat i on) i s t hat , once ast andar d i s agreed by t he r esponsi bl eCENELEC techni cal comm t t ee, eachmember count r y w l l publ i sh i t as thei rNat i onal St andard. Conf l i cti ng ol derst andar ds must be w t hdr awn w t hi n at i me l i m t and no changes at al l arepermtted.

The new st andar d w l l be publ i shedi ni t i al l y i n Engl i sh, French and Ger manbut may be t r ansl ated i nto ot herl anguages by t he member count r i es, e. g.

Norwegi an and Spani sh, and publ i shedonl y af t er t he tr ansl at i on has beenapproved by CENELEC. By t hi s meansevery member count r y w l l havei denti cal st andar ds and each reader canr ead t he st andar d i n hi s own l anguage.Consi der abl e care i s t aken t o ensur ethat t he tr ans l at i ons are i dent i cal i nmeani ng, a t ask whi ch i s somet i mesqui te di f f i cul t . But , w th onl y a f ewexcept i ons, CENELEC has been successf uli n achi evi ng har moni sat i on of manyt echni cal r equi r ement s, i ncl udi ngst andar ds f or most t ypes of Hazar dousAr ea prot ect i on met hods.

As t he basi s f or i t s st andar ds CENELECal ways takes t he I EC equi val entst andards where such exi sts. I f t he I ECdocument i s sui t abl e t here i s gr eatpressure t o adopt i t , w t hout change,

as t he CENELEC st andar d. The pr esentedi t i ons of t he CENELEC st andar ds( i ssued i n the l at e 7 0 ' s ) ar e, i n manycases, i dent i cal t o t he I EC equi val entst andar ds of t he t i me.

Some I EC document s cannot aut omat i cal l y

be used, f or exampl e, because t hey wer ewr i t t en as " Report s" or "Codes ofPract i ce" i n non- mandat ory l anguage.CENELEC st andar ds i n general have t o bewr i t t en so t hat a Test House orCert i f yi ng Aut hor i t y can use them toi ssue t est r epor t s and cer t i f i cat es.Thi s i mpl i es that any f l exi bi l i t i es arespeci f i ed i n t he st andard and al l t estr eport s ar e theref ore based oni dent i cal r equi r ement s. Thi s can l eadt o consi der abl e extr a work and t heCENELEC comm t t ee on Pr essur i zati onneeded t en t hree- day meet i ngs over aper i od of ei ght year s to turn t he I ECReport 79-2 i nt o a standard sui t abl e

f or cert i f i cat i on purposes. Thi s hasnow r esul t ed i n a vot i ng documentwhi ch, i s hoped, w l l be accept eddur i ng 1994. At t hi s stage a l l membercount ri es ar e i nvi t ed t o vot e on thedocument w t h t he l arger count r i eshavi ng mor e vot es t han t he smal l ercount ri es. Al l count r i es may vot ewhet her or not t hey part i ci pated i n thewor k. I f t he vot e i s posi t i ve, whet heror not t hey i ndi vi dual l y voted i nf avour of t he draf t , al l membercount ri es w l l have t o publ i sh thef i nal st andard as thei r nat i onalst andar d. I t c an be seen t hat nat i onaldel egati ons w l l pur sue t hei r nat i onal

pr efer ences ver y st r ongl y i n comm t t eeas f ai l ur e to convi nce t he comm t t ee ofthei r poi nt of v i ew w l l eventual l yf or ce t hem t o change thei r nat i onalpracti ces t o a vi ew t hey di d not l i ke!The syst emhowever i s hi ghl y democrat i cand general l y works very wel l .

Cer t i f i cat i on Under t he Expl osi veAt mospher es Di r ect i ve, each membercount r y of t he EC not i f i es t he Eur opeanComm ssi on of t he cer t i f i cat i on bodi est hat t hey have appr oved. TheCer t i f i cat i on bodi es car r y outexamnat i on and t esti ng of pr oducts i naccor dance w t h the speci f i ed

st andar ds. Upon compl et i on ofexam nat i on of t he product, successf uit est i ng, and sat i sf actory survei l l anceof t he manuf actur er of t he product , aEuropean Cert i f i cat e of Conf or m t y i s

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i ssued. A manuf act urer who possesses aCert i f i cat e of Conf orm t y may pl ace ont he cer t i f i ed product t he communi t yhazar dous ar ea "Mark" ( an "Ex" i n ahexagon [ Z ] ) . Thi s mar k has becomer ecogni sed as t he "passpor t " of t heappar atus and i s vi t al - t o al l ow

acceptance and use of . the producteverywhere i n the communi t y. -

Accept ance and market abi l i t y ofhazar dous ar ea pr oduct sW t h the st andards and cer t i f i cat i onmet hods harmoni sed t here shoul d beconf i dence among t he governments t hatproduct s f r om another member count r yshoul d be as saf e as t hose manuf act uredunder t he nat i onal j ur i sdi cti on. TheEuropean par l i ament adopt ed l egi sl ati on( a " Di r ecti ve") r equi r i ng t hat membercountr i es shoul d per m t appar atusbeari ng the Mark t o ent er t hei r count r yand be used w t hout t echni cal obj ecti on

to the forei gn cert i f i cat i on.

Over t he year s t he Mark has proved i t swor t h and user s ar e no l onger per m t t edt o speci f y a part i cul ar t est house.( They get around t he r ul e by st ati ng,f or exampl e, "Cer t i f i ed by BASEEFA orequi val ent aut hori sed t est house") . Themanufact urer i s not r equi r ed to use hi sown nat i onal t est house and i sperm t t ed to shop around f or t hebest/ qui ckest/ cheapest cer t i f i cat i onavai l abl e. Thi s i s resul t i ng i ncompet i t i on bet ween t est houses and agener al r ai si ng of st andar ds ofcust omer ser vi ce. No bad t hi ng f r om t he

manufact ur er' s or t he user ' s poi nt ofvi ew!

The I EC IIExII I nt ernat i onalCer t i f i cat i on SchemeAt t he f i r st meet i ng i n March ' 9 2 t he"Expert s" f r om i nterested count r i esdeci ded to t r y t o set up anI nt er nat i onal Cer t i f i cat i on Scheme f orHazar dous area el ectr i cal equi pment .Unl i ke t he "CB" Scheme di scussed abovei t was deci ded t hat i t shoul d becent r ed on t he f ol l ow ng concept s:

One St andar d ( The I EC st andar d!)One Test Report

One Cert i f i cat eOne Mar k

The agreed obj ect i ve was t o set up t hescheme so t hat t he manuf actur er m ght

go t o t he I EC aut hor i sed t est house ofhi s choi ce and obtai n an I ECI nt ernat i onal Cert i f i cate of Conf orm t yt o t he I EC st andard f or hi s productwhi ch woul d be val i d and accept abl e i nal l par t i ci pat i ng I EC member count r i es.Ther e wi l l be an "I EC Ex Mark" whi ch

w l l become recogni sed as t heequi pment ' s I nt ernat i cl nal passport .

I f t hi s sounds si m l ar to the Eur opeansyst em i t w l l come as no sur pri se tol earn t hat i t was pr oposed by the UK!I t was st r ongl y support ed by t hemeet i ng and a " t ask force' ' was s et upt o wr i t e t he rul es.

The task f orce compri sed t est housesf r om t he UK, USA, J apan and Swedent ogether w t h a manuf actur er and auser, w t h t echni cal support f r omI ECEE( t he depart ment w t hi n I EC deal i ng w t hcert i f i cat i on mat ters) . . I t was l ed by

t he Di r ect or of t he UK' s pri nci pl e testhous e EECS (BASEEFAI MECS)' .

I f t hi s sounds ' ' Utopi an" ( and equal l ydi f f i cul t to get t o) the reader coul dbe f orgi ven, except f or t he fact t hatt he Eur opeans have been operat i ng sucha scheme f or over t en years! Thi s i snot to say t hat i t w l l be easy toachi eve and t her e ar e many hur dl es t oover come. The t ask f orce l eaderproduced a pi ct ori al r epr esent ati on of"The Road t o Worl d Cert i f i cati on" [ 4 ] .

You w l l not i ce t hat t he hurdl es ar e i nf act shown as bri ck wal l s whi ch ar enor mal l y regarded as i mpregnabl e. The

meri t of a br i ck wal l however i s t hati t can be l owered or t aken downent i r el y , br i ck by br i ck, by start i ngat t he t op. Thi s woul d seem t o be t hebest way f orward, t ackl i ng t he probl emsbr i ck by bri ck!

The reader w l l al so not i ce t hat thewal l l abel l ed "Nat i onal Di f f erencesf r om I EC St andards" has one secti onwhi ch i s l ower t han the ot her s. Thi s i si ntended t o r epr esent t he t echni que ofI nt r i nsi c Saf ety where the I ECStandards have been w del y accept ed andadopt ed, w t h onl y m nor var i at i ons, asnat i onal st andar ds. An exampl e tabl ed

at t he meet i ng was of a Zener Di odeSaf et y Barr i er whi ch has cert i f i cat esval i d i n t hi rt y- seven count ri es [51,t he i dent i cal pr oduct bei ng sol d i n al lt hi r t y- seven market s! Harmoni sati on of

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t he hazar dous ar ea st andar ds ofpart i c i pat i ng count r i es i s essent i al ;i t seems t hat I nt r i nsi c Safet y woul d bea good pl ace t o st art .

The I EC aut hor i sed Test Houses w l lhave to be appoi nt ed and - super vi sed

w t h gr eat car e and i t seems l i kel ythat the IS0 ( I nt er nat i onal St andar dsOr gani sat i on) versi ons of t he EN45 000seri es of Test House qual i t y st andar dsw l l be used to assess the appl i canttest houses . Si m l ar l y, themanufact urer s ar e l i kel y t o need t hei rmanuf act uri ng qual i t y syst emsi ndependentl y accredi t ed t o at l eastt he I S0 9002 Qual i t y St andar d t o ensuret he conf i dence of t he customer t hat t heproduct he buys conf or ms to thepr ot otype that was t est ed and cer t i f i edby t he test house. Test Houses w l l ber equi red to per f or m sur vei l l ance on thecer t i f i ed manuf act ur er w t h pr ocedur es

to be f ol l owed i f i t i s f ound t hatmanuf act ured product s do not conf orm tothe cer t i f i cate .

An i mport ant el ement f rom themanuf act urer‘ s vi ewpoi nt i s t hat i t i svi t al t hat t he accept ance of t hecer t i f i cate be reci procal i . e. acer t i f i cat e produced i n count r y Ashoul d be accepted i n Count r y B whi l ecountr y B‘s cer t i f i cat es must beequal l y accept abl e i n Countr y A . Onl yi n thi s way w l l f ai r compet i t i on bepossi bl e. Her ei n l i es a maj or hur dl ef or t he scheme as t he accept abi l i t y, orot herw se, of the cert i f i cat e i s not

t he deci si on of I EC but t hat of t hegover nment of t he member count r y.Manuf actur ers and users w l l have toper suade t hei r government s to j oi n t hescheme. A t t he st ar t of t he schemethere i s l i kel y to be a t rans i t i onper i od wher e part i ci pati ng count r i esw l l be abl e to al i gn thei r nat i onalst andar ds w t h t he I EC st andar ds andt hen enact l egi sl at i on to per m taccept ance by t hei r r egul ator yauthor i t i es of an I EC I nt ernat i onalCert i f i cate of Conf orm t y. The i ssui ngof I EC Cer t i f i cat es of Conf or m t y coul dbegi n as s oon as t he r ul es ar e agreedand Test Houses appoi nted. I EC

cert i f i cates may wel l be accepted byt he many countr i es t hat do not haveal r eady have st r ong pref erences or t esthouses of t hei r own.

Ther e may be di sadvant ages seen by t hemanuf act ur ers e. g. t he ri sk i nvol ved i nopeni ng t hei r market t o f orei gncompet i t ors. They shoul d bear i n m ndt hat , whi l e i t i s di f f i cul t t o changet he m nd of gover nment , i t i s evenhar der t o change t he hear t s and m nds

of t he buyers who t r ust t hei r l ocalt est house and who may wel l - r esi st t hei mport er w t h hi s f orei gn cert i f i cat e.Exper i ence i n Europe has shown t hatl anguage di f f i cul t i es are st i l l a maj orprobl em and f am l i ar i t y w t h the l ocalsuppl i er i s a very di f f i cul t “customerobj ecti on” for t he f or ei gn suppl i er t oover come. The good news i s t hat t hemanuf act ur er i n a part i ci pat i ng count r yhas a much w der oppor t uni t y to sel lhi s pr oduct s worl d w de.

The OEM cust omer coul d st op maki ngdi f f er ent pr oducts f or di f f er entmarket s and havi ng to obtai n mul t i pl e

cert i f i cati ons at enormous expense.Reduced r esour ces ‘ spent oncert i f i cati on can be r edepl oyed on moreprof i t abl e devel opment work and bet t erproduct s coul d be pr oduced f or t hew der market .

The user w l l have a much w der choi ceof product and can chose the t echnol ogywhi ch sui t s hi s pr ocess best .Ul t i mat el y i t i s the user of t hepr oduct t hat st ands to gai n most , w t hmanufact urer s off eri ng pr oduct s whi chw l l t end to l ook more and more al i keand even become i nt er changeabl e. Thepatt ern can be seen w t hi n the

pneumati c i ndust r y where, under t hei nfl uence of t he powerf ul aut omoti vei ndustr y, comm t t ees l i ke J I C [6 1 andCETOP [ 7] have har moni sed pneumat i cval ves and cyl i nders t o t he poi nt wher et hey are someti mes i ndi st i ngui shabl ef r om one another except f or t he pai ntcol our !

“Types of pr otecti on” t o be i ncl uded i nt he scheme

Whet her or not a t ype of prot ect i on canbe i ncl uded depends upon t he st at us oft he I EC Standar d and t he al i gnment oft he l ocal nati onal st andard. The

cur r ent st atus of t he I EC Hazar dousarea standar ds ( t he I EC 79 s er i es ) i s :

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Present l y accept abl e f or cert i f i cat i on:79-0 General r equi r ement s f or al lt ypes of prot ecti on79-1 Fl amepr oof ( or "Expl osi onpr oof "i n Nort h Amer i ca)79-5 Powder F i l l i ng79-6 Oi l I mmersi on

79-7 I ncr eased Safet y79-11 I nt r i ns i c Saf ety

I EC "Repor t s" t o be conver t ed t ost andar ds:79-2 Pressur i zat i on (Encl osur esw t hout peopl e)79-13 Pr essuri zed Rooms ( W t hout ani nter nal f l ammabl e gas r el ease)79-15 Type n ( Non- I ncendi ve equi pmentf or Zone 2 use)79-16 Anal yser Houses ( Fl ammabl e gasdi l uted w th ai r )

I n pr epar at i on:( ? = Number t o be deci ded)

79-? Encapsul ati on79-? Gas Det ect ors79-? Dust Hazar ds

Sever al of t he above st andar ds ar ecur r ent l y i n the pr ocess of r evi ew andi t i s hoped that the new edi t i ons w l lbe avai l abl e f or i ncorporat i on f romthebegi nni ng of t he scheme.

Progress to dat eAf t er f our meet i ngs t he task f orceproduced a draf t t hat was subsequent l yaccept ed, af t er some amendments, by t hef ul l Wor ki ng Gr oup. The document was

presented to t he annual meet i ng of t heI ECEE Management Comm t t ee i n November'9 3 where i t was accepted w t houtchange. The " I ECEx" scheme i s now tovoted on by member count r i es and coul dbe i n operati on i n J anuary '95. Asummar y of t he vot i ng document i s t o bef ound as Ref er ence [ 3 ] .

For t hose f aml i ar w t h the normalspeed of pr ogr ess w t hi n I EC ther eal i sati on t hat the whol e operati ont ook onl y ni net een mont hs f r omi ncept i on to acceptance f or vot i ng mayi ndi cat e the l evel of ent husi asm f ort he concept and the hard work put i n byt he t ask f or ce members !

by many users of hazardous areaequi pment . Mul t i - nati onal oi l andchem cal compani es w l l not need tor edesi gn t hei r new pl ant s accor di ng t ot he r ul es of t he host countr y. Theyw l l tend to be l ocat ed i n count ri eswho have j oi ned the scheme and

harmoni sed t hei r own st andards w t hI EC. Operator s of of f s hore dr i l l i ngr i gs w l l no l onger have the pr obl emoft ryi ng to sat i sf y t wo di f f erent set sr ul es i mposed, f or exampl e, by t he U. S.Coast guard ( t o USA st andards) and t heDutch M ni ng I nspecti on ( t o CENELECst andar ds).

Manuf act urer s can concent r at e oni mprovi ng t he product and not t r yi ng todesi gn i t to meet t en di f f erentstandards al l bas i cal l y s i m l ar butw th i r r i ta t i ng and di f f er i ng deta i l s .Exampl e: I n Eur ope a CENELECpressuri zed encl osur e must have i t s

i nt er nal ai r changed at l east f i vet i mes bef ore power can be sw t ched on.I n the USA i t i s ei t her f our or t ent i mes dependi ng upon t he content s ofthe encl osure, whi l e i n Austr al i a i t i sei t her t hree or f i ve t i mes dependi ngupon whi ch st andar d i s used. I n botht he USA and Austr al i a ef f ort s ar e bei ngmade t o br i ng t he nat i onalpressur i zat i on st andards i nto l i ne w t hI EC (f i ve ai r changes) but at t he samet i me CENELEC i s about t o vot e on thesecond edi t i on of EN50 016 whi ch t urnst he I EC "Report " i nt o a standardsui tabl e fo r cer t i f i cat i on whi l est r essi ng t he need f or a pur ge t est

whi ch may r esul t i n l ess t han f i ve ai rchanges !

Gr eat er co- operat i on bet ween I EC andCENELEC i s al r eady happeni ng and t henew CENELEC st andar ds f or Sand Fi l l i ngand O l I mmer si on have al r eady beenproposed to I EC as dr af t I EC st andar ds.The new CENELEC "Gener al Requi r ement s"document EN50 014 i s proposed by I EC ast he next i ssue of I EC 79-0 [ SI Ut opi aher e r;e come!

Concl usi onThe advent of a tr ul y i nt ernat i onalcer t i f i cat i on scheme w l l be uel comed

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The aut hor , Andy Ow er, i s Managi ngDi r ector of Expo Saf ety Syst ems Lt d.who speci al i se i n t he manuf act ure ofPressur i zed and Pur ged encl osur es,Fl amepr oof ( Expl osi onproof ) boxes andI nt r i ns i cal l y Saf e I nf ormat i onTechnol ogy pr oduct s s uch as data

t erm nal s and barcode r eader s.

He i s Chai r man of I EC SC31D and CENELECSC31- 7 ( t he I nter nat i onal and EuropeanPressur i zat i on t echni cal comm t t ees)and r epr esent s Gr oup I 1 ( non- m ni ngi ndustr y) manuf actur ers on t hemanagement board of BASEEFA, t he mai nUK Test House f or hazardous ar eaequi pment . He i s t he UK manuf act ur i ngmember of t he " I ECEE Ex" wor ki ng gr oup.

Expo Saf et y Syst ems Lt d. ,Summer Road,Thames Di t t on,Surrey,

Engl and, KT7 ORHTel : I nt t 44 81 398 8011,Tl x: 8954824 xposys g,Fax: i nt +44 81 398 8014

Ref erences[ l ] Author i sed European ( EEC) TestHouses

UK EECS ( BASEEFA/ MECS) & ST&CFr ance LCI E and I NERI S ( CERCHAR)Ger many PTB and DMT ( BVS)Bel gi um I SSeP ( I NI EX)I t al y CESIDenmar k DEMKO

Spai n LOMNet herl ands TNO

Some non- EEC European Test houses Theyare not pr esentl y aut hor i sed by t heEur opean Comm ss i on t o appl y t he "Zx"

mark but l i kel y to become s o af t erbecom ng member s of t he EEC.

Nor way NEMKOSweden SEK(SP)Sw t zer l and SEV

[2] The European Cert i f i cati on "Mark"

(€x)

[31Summar y of t he vot i ng document whi chwi l l set up t he I ECEx scheme

I ECEE r ef erence: - I ECEE/ MC (Sec) *BSI r eference: - 94/ *BSI Comm t t ee r esponsi bl e t or epr esent at i ons shoul d be made i s

* TO be gi ven at t he conf erence

whom"L6"

whent he vot i ng dr aft has been fi nal i sed( curr ent l y w t h t he task force f orf i nal i s at i on) .

cont i nued ......

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[4](A graphic, semi-serious, portrayal of theway to certification Utopia)

“ The Road to World Cert i f icat ion”

GAIN ING AGREEMENT

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[ 5 1 MTL700 ser i es Zener Barr i ercer t i f i cat i on l i st

The devi ce tabl ed at t he I ECEE WG Exmeeti ng i n 1992 t hat demonst r at ed veryeff ect i vel y t he exi sti ng har mony w t hi nt he I ntr i nsi c Saf ety standar ds was anMTL700 ser i es Zener Di ode Saf et yBarr i er. I t i s appr oxi matel y 125" l ongx 75" hi gh and 14" w de. I t i scovered i n cert i f i cat i on l abel s and i snot l arge enough, com or t abl y, toconta i n al l the data! I t i s cer t i f i edto t he l ocal nat i onal st andar ds asf 01 ows:Aus t a 1 a SACanada CSACzechosl ovaki a FTZU( Cur r ent st atus of FTZU i s uncl ear )Denmar k DEMKOHungar y BKIJ apan RI I SPol and KDB

Rumani a I SMSw t zer l and SEVUK BASEEFAUSA UL and FMCI S ( USSR) VNI I VE12 count r i es

The UK ( BASEEFA) cer t i f i cat e i s val i di n al l t he EEC and EFTA countr i esi ncl udi ng:Bel gi um EECDenmar kFr anceGer manyGr eeceHol l and

I re l andI t al yLuxembour gSpai n9 countr i es ( excl Denmark & UK)

Austr i a EFTAFi nl andI cel andNor wayPor t uga 1SwedenSw tzer l and6 count r i es ( excl Sw t zer l and)

Tot al : 37 count r i es

I n addi t i on t her e are many ot hercount r i es accept i ng (o f f i c i al l y orunof f i c i al l y) cer t i f i cat i on to I EC orCENELEC st andar ds i ncl udi ng:Abu Dhabi and t he ot her Emr atesChi naEgyptI ndi aI sraelMa ays aNew Zeal andSaudi Ar abi aSi ngaporeSout h Af ri caThai andTur key

[ 6 ] J I C: J oi nt I ndustr i es Comm t t eeof t he aut omoti ve i ndust r y[ 7 ] CETOP: The Eur opean comm t t ee f or

hydraul i cs4 and pneumat i cs[ 8 ] I EC TC31 meet i ng ' i n Br i sbane,1991