council direct septemb approxim law member state relat weld unalloi steel ga cylind eec council european commun regard treati establish european econom commun articl thereof regard propos commiss regard opinion european parliament regard opinion econom social committe member state construct inspect ga cylind subject mandatori provis vari member state hinder trade cylind approxim provis council direct eec juli approxim law member state relat common provis pressur vessel method inspect lai procedur eec pattern approv verif vessel direct advis lai technic requir compli eec type weld unalloi steel ga cylind capac litr order put circul commerci restraint undergon inspect bear mark symbol adopt direct articl direct appli weld unalloi steel ga cylind form piec actual thick mm capabl refil time capac rang litr inclus design transport compress liquefi dissolv gase liquefi gase low temperatur acetylen design pressur ph cylind exce bar ga cylind hereinaft refer quot cylind quot articl purpos direct quot eec type cylind quot cylind design manufactur satisfi requir direct direct eec articl member state ground relat construct inspect cylind mean direct eec direct refus prohibit restrict place market put servic eec type cylind articl eec type cylind subject eec pattern approv eec type cylind subject eec verif except cylind capac litr articl amend adapt section annex annex ii iii direct technic progress adopt accord procedur laid articl direct eec oj oj oj oj articl procedur laid articl direct eec appli section annex direct articl member state bring forc law regul administr provis need order compli direct month notif forthwith inform commiss thereof member state ensur text provis nation law adopt field cover direct commun commiss articl direct address member state brussel septemb council presid barri direct notifi member state septemb annex symbol term annex symbol annex mean gt pic file quot quot gt purpos direct quot burst pressur quot mean pressur plastic instabl maximum pressur obtain burst test normal term quot normal quot direct defin paragraph euronorm stress reliev term quot stress reliev quot relat heat treatment complet cylind subject cylind heat temperatur steel lowest critic point acl order reduc residu stress technic requir materi materi manufactur stress resist cylind shell steel euronorm compon cylind bodi part weld thereto made mutual compat materi filler materi compat steel form weld properti equival parent metal cylind manufactur obtain provid chemic cast analysi certif respect steel suppli manufactur pressur part independ analys made analys carri specimen materi suppli cylind manufactur finish cylind manufactur make inspect bodi result metallurg mechan test analys carri weld provid descript weld method process adopt regard repres weld made product heat treatment cylind deliv normal stress reliev condit cylind manufactur certifi cylind heat treat complet weld certifi process heat treatment appli local heat treatment permit calcul pressur part thick cylindr shell wall point stress resist shell ga cylind calcul formula cylind longitudin weld gt pic file quot quot gt cylind longitudin weld gt pic file quot quot gt equal manufactur radiograph intersect weld distanc mm intersect case longitudin weld mm mm side case circumferenti weld cylind select begin end shift period machin radiograph manufactur spot radiograph intersect weld distanc mm intersect case longitudin weld mm mm side case circumferenti weld examin carri cylind manufactur chosen random radiograph test reveal unaccept defect defin step examin product run question elimin defect dimens calcul end figur appendix cylind end fulfil condit torispher end gt pic file quot quot gt ellipt end gt pic file quot quot gt hemispher end gt pic file quot quot gt thick dish end point figur calcul mean formula gt pic file quot quot gt coeffici form full end tabl appendix nomin thick cylindr edg end nomin thick cylindr part nomin wall thick cylindr part dish end circumst gt pic file quot quot gt minimum mm case cylind bodi exclud valv seat made part end piec convex construct workmanship gener requir manufactur guarante respons manufactur facil process ensur cylind produc satisfi requir direct manufactur ensur adequ supervis parent plate press part manufactur cylind free defect advers affect oper safeti cylind pressur part manufactur describ weld method process inspect carri product technic weld requir butt weld execut automat weld process butt weld on stress resist shell locat area profil fillet weld superimpos butt weld mm weld join part make shell cylind satisfi condit figur exampl appendix longitudin weld weld execut form butt weld full section metal wall circumferenti weld fix valv flang collar upper end weld execut form butt weld full section metal wall joggl joint weld consid special type butt weld circumferenti weld fix valv flang collar upper end weld butt fillet weld butt weld appli full section metal wall joggl joint weld regard special type butt weld requir indent applic upper end seat cylind seat fix end weld unrel leak tight cylind appendix hereto figur case butt weld misalign joint face exce thick wall inspect weld manufactur ensur weld show continu penetr deviat weld seam free defect jeopard safe cylind piec cylind except weld compli figur appendix circular butt weld radiograph length mm cylind select begin end shift period continu product event product interrupt period hour cylind weld round round cylindr shell cylind limit differ maximum minimum diamet cross section averag diamet fit carri handl protect collar manufactur weld cylind bodi danger concentr stress conduc collect water base cylind suffici strong made metal compat type steel cylind form base give cylind suffici stabil top edg base weld cylind conduc collect water water penetr base cylind fit identif plate fix stress resist shell remov corros prevent measur materi manufactur base carri handl protect collar provid strength assur risk cylind end corrod elimin protect cock valv cylind cock valv effect protect design design cylind protect collar mean protect cap secur attach cover test mechan test gener requir cover requir contain annex mechan test carri accord euronorm case tensil test thick test piec mm mm case bend test thick test piec mm mm mechan test check properti parent metal weld stress resist shell ga cylind carri test piec finish cylind type test evalu test result sampl cylind subject test cylind circumferenti weld piec cylind test piec place shown figur appendix gt pic file quot quot gt cylind longitudin circumferenti weld piec cylind test piec place shown figur appendix gt pic file quot quot gt test piec suffici flat flatten cold press test piec weld weld machin flush trim surplu tensil test tensil test parent metal procedur carri tensil test euronorm accord face test piec repres insid wall cylind machin valu determin yield stress equal minimum valu guarante cylind manufactur valu determin tensil strength elong test piec parent metal fractur compli euronorm tabl iii tensil test weld tensil test perpendicular weld carri test piec reduc cross section mm width length extend mm edg weld shown figur appendix central part width test piec increas progress tensil strength obtain equal guarante parent metal irrespect fractur occur cross section central part test piec bend test procedur carri bend test euronorm accord bend test carri transvers weld test piec mm width mandrel centr weld test perform crack test piec bent round mandrel insid edg separ distanc greater diamet mandrel figur appendix ratio diamet mandrel thick test piec exce valu tabl gt pic file quot quot gt burst test hydraul pressur test condit cylind subject test bear inscript propos make section cylind subject pressur burst test hydraul pressur carri equip enabl pressur increas rate cylind burst chang pressur time record interpret test criteria adopt interpret burst test volumetr expans cylind equal volum water time pressur start rise time burst cylind capac gt litr differ volum cylind begin end test cylind capac examin tear shape edg minimum test requir measur burst pressur pr circumst test pressur ph ratio volumetr expans cylind initi volum length cylind greater diamet length cylind equal diamet burst test fragment cylind main fractur show brittl edg fractur radial angl diametr plane displai reduct area thick fractur reveal clear defect metal hydraul test water pressur cylind increas rate test pressur reach cylind remain test pressur long make establish pressur fall cylind guarante leak proof test cylind show sign perman deform cylind test pass test reject destruct examin radiograph examin weld radiograph accord iso specif class wire type indic smallest diamet visibl wire exce mm step hole type indic diamet smallest visibl hole exce mm assess weld radiograph base origin film accord practic recommend iso standard paragraph defect accept crack inadequ weld inadequ penetr weld inclus list regard unaccept elong inclus group round inclus row length repres weld length greater mm ga inclus measur mm mm ga inclus ga inclus measur mm ga inclus mm weld length total area figur greater mm macroscop examin macroscop examin full transvers section weld show complet fusion surfac treat acid macro prepar show assembl fault signific inclus defect case doubt microscop examin made suspect area examin weld examin carri weld complet weld surfac examin illumin free greas dust scale residu protect coat kind fusion weld metal parent metal smooth free etch crack notch porou patch weld surfac surfac adjac wall weld surfac regular butt weld excess thick exce width weld eec pattern approv eec pattern approv refer articl issu type famili cylind quot type cylind quot mean cylind design thick equip accessori manufactur workshop sheet metal ident technic specif weld process heat treat condit quot famili cylind quot mean piec cylind factori differ length limit minimum length time diamet cylind maximum length time length test cylind applic pattern approv type cylind famili cylind submit document verif prescrib make member state batch cylind number cylind requir test addit inform requir member state applic type durat heat treatment temperatur weld process obtain provid cast analysi certif steel suppli cylind manufactur eec pattern approv process verifi calcul prescrib correct condit prescrib fulfil carri cylind submit prototyp test prescrib cylind test prescrib cylind test prescrib cylind result check satisfactori member state issu eec pattern approv certif accord specimen contain annex ii eec verif purpos eec verif cylind manufactur make inspect bodi eec pattern approv certif cast analysi certif steel suppli manufactur cylind mean identifi cast steel cylind document document relat heat treatment cylind suppli state process accord list cylind give number inscript prescrib section result destruct test carri product weld method ensur good reproduct cylind manufactur manufactur provid statement effect seri product undertak weld method ident cylind submit eec pattern approv eec verif inspect bodi ascertain eec pattern approv certif obtain cylind conform verifi document give inform materi manufactur process check technic requir set section met carri visual extern intern examin cylind random sampl present test prescrib check progress check inform suppli manufactur mention correct verif carri satisfactori issu eec verif certif line specimen set annex iii purpos carri test random sampl cylind batch batch consist maximum cylind type defin paragraph manufactur dai consecut dai tabl gt pic file quot quot gt depend size batch sampl cylind subject mechan test provid hydraul pressur burst test provid distribut tabl cylind fail test batch reject cylind fail mechan test burst test number cylind tabl select random test carri distribut tabl tabl gt pic file quot quot gt cylind satisfactori batch reject select sampl test perform presenc repres inspect bodi cylind batch undergo hydraul test presenc supervis repres inspect bodi exempt eec verif case cylind litr capac test check section carri manufactur respons manufactur make inspect bodi document report relat test check mark inscript inspect bodi carri prescrib check result satisfactori issu certif state check perform cylind litr capac mark inscript relat cylind construct made base cylind made head reinforc part cylind identif plate inscript made dish end form provid integr cylind weaken eec pattern approv mark derog requir section annex direct eec manufactur make eec pattern approv mark order gt pic file quot quot gt number identifi direct capit letter identifi member state grant eec pattern approv final figur year pattern approv grant gt pic file quot quot gt eec verif mark derog requir section annex ii direct eec inspect bodi make eec verif mark order small letter quot quot capit letter identifi member state verif carri figur identifi territori subdivis mark inspect bodi made verifi agent mark verifi agent hexagon gt pic file quot quot gt construct inscript steel number indic mm calcul base symbol cylind normal condit symbol cylind stress reliev condit hydraul test test pressur bar symbol quot bar quot type cylind minimum capac litr guarante manufactur cylind capac decim place round origin capit letter indic countri origin manufactur mark serial number inscript inscript relat construct inspect thereof requir nation rule made cylind accord appendix gt pic file quot quot gt coeffici form dish end gt pic file quot quot gt gt pic file quot quot gt appendix gt pic file quot quot gt appendix gt pic file quot quot gt appendix gt pic file quot quot gt appendix gt pic file quot quot gt annex ii gt pic file quot quot gt technic annex eec pattern approv certif result eec examin pattern view eec pattern approv main featur pattern longitudin cross section type cylind receiv pattern approv show nomin extern diamet minimum thick cylind wall minimum thick base head minimum maximum length lmin lmax extern height curv part base cylind mm capac capac vmin vmax pressur ph manufactur draw date type cylind steel accord section annex iii model gt pic file quot quot gt gt pic file quot quot gt