I n t ern at i on al St an d ard , N TE RN AT, ON AL ORG AN l ZATl ON Expl osi on Part 4: FOR S TAN D ARD I Z ATI ON M E ) YH AP O~ H AR prot ect i on OP r AH H Al &l R s ys t ems Det ermi n at i on of ll0 f! @ a4! i !4 61 841 CTAH AAP TM AU WWOR G AN l S ATl ON I N TE RN ATI ON ALE DE N ORM ALI S ATI ON - ef f i caCy of expl os i on s u ppres s i on sys t ems Syst h es d e prot ect i on co n t re l es expl os i o n s - Part i e 4: Dbermi n at i on de l ’ effi caci t h d es s ys t &mes de s u ppres s i o n d es expl os i on s Fi rst U DC ed i t i on - 965- 1 - 61 63 Descri pt ors : expl osi on Ref proofi ng , expl osi on su ppressi on syst ems, tests, N o I S0 61 64/4- 65 ( E) effect i ven ess Pri ce based on pag es Foreword I S0 (the nat i on al I n t ern at i on al st an d ard s St an d ard s bo d y th e is n ormal l y i n t erest ed ri g h t men t al Draf t to member th e I S0 75 U sers l at est Th ey by St an d ard f or an y edi ti on , fi re n ot e I S0 t h at u n l ess al l ad o pt ed an d ot h erwi se the th ei r in was fi re h erei n is wo rk t ech n i cal of h as I n t ern at i on al I SO, al so t ech n i cal accept an ce wi t h f ed erat i on prepari n g commi t t ees t ake in the are I n t ern at i on al I S0 me mber est abl i sh ed org an i zat i on s, part of I n t ern at i on al Each been commi t t ees as h as g overn - work ci rcu l at ed to St an d ard s by proced u res requ i ri n g Commi t t ee I SO/TC at vot i n g prepared by Tech n i cal 21 , fi g h t i n g St an d ard s to an y ot h er u n d erg o revi si on I n t ern at i on al st at ed f or a worl d wi d e commi t t ee accord an ce bod i es I n t ern at i on al mad e wi t h by bef ore 61 64/4 Org an i zat i on Swi t zerl an d l i son me mber I S0 Th e commi t t ee appro ved the bod i es) a t ech n i cal t h at in approval are St an d ard i zat i on ) t h ro u g h wh i ch on prot ect i on ref eren ce I n t ern at i on al Pri n t ed i n f or approval sh ou l d an d - t h at ou t St an d ard s bod i es f or member f or n on - g overn men t al , I n t ern at i on al Eq u i pmen t carri ed represen t ed Cou n ci l % ( I S0 a su bj ect I n t ern at i on al th e l east in be an d Org an i zat i on bod i es St an d ard i zat i on , 85 f rom St an d ard ti me to t i me i mpl i es i ts I N TERN ATI ON AL Expl osi on Part 4: I S0 STAN DARD protecti on syst ems Determi n ati on of 61 64/4- 665 (E) - effi cacy of expl osi on su ppressi on syst ems I n trodu cti on su ch h azard s fol l owi n g Expl osi on i ng expl osi on su ppressi on in a fi n ed, d et ect ed an d pressu re d evel opmen t preven t i n g arrested or i s a t ech n i q u e by or fi n ed, du ri n g to a mi n i mi zi n g essen ti al l y i ts i n ci pi ent safe or wh i ch st ag e, a devel opvol u me thus predetermi n ed a) vessel b) parti al l y c) tai n er an d d amag e cou l d d) Th e performan ce ti on of of an expl osi on fol l owi ng su ppressi on syst em a) th e n at u re b) the en vi ron men tal an d expl osi bi l i ty of the di ti on s of prod u ct an d fl ow, et c the si ze d) th e effecti ven ess of e) the performan ce ch aract eri sti cs combu st i bl e or g eomet ry t emperatu re, part of Part : d u st s in vessel of th e the 2: g ases expl osi on su ppressan t ; an d ch oi ce 61 64 syst ems Determi n at i on t u res in of the expl osi on su p- Th i s part of h ard ware for the in is on e Th e of a seri es ot h er part s deal i n g are as wi t h of oth er by t h an I S0 be expl osi on i n di ces of combu st i bl e of expl osi on i n di ces of combu st i bl e of expl osi on i n di ces of an d recog n i zed t h at speci fi ed measu remen t , test g as/ai r in the the i nterpol ati on an d/or ti on fi el d Th e h ave di ti on s for of a of be d esi g n of speci al i sts h azard eval u ati on by an test s apparat u s wh i ch t emperat u res at mosph eri c su bstan ti al l y di ti ons; an d/or produ ct t h rou g h pu t ; g reat er or l ower t h an t h ose test speci fi es a met h od su ppressi on en cl osed an d reg i me Fi el d si on fuel /ai r vol u me for eval u ati n g syst ems It g i ves the the ag n st ef- defi n ed u sed to cri teri a of an u n d ert ake cri teri a to be expl osi on expl osi on for al ter- appl i ed in su ppressi on defi ni n g su ppressi on the safe syst em of appl i cati on part of I S0 syst ems cl osed, mi xt u res resu l ts ot h er a) obt n ed parts of from I S0 or extrapol ati on , a g eneral i zati on vessel s of of may Su ch t h ose an expl osi on requ i re are st an d ard th i s fi el d t est of syst ems si g ni fi cantl y test an d proced u res expl osi on h azard s di fferent sh ou l d protecti on wh i ch of an on l y to protecti on an expl osi on expl osi ve expl osi on of cl osed, may mi xtu re su ppres- or essen ti al - resu l t I t d oes as a se- n ot appl y to : syst ems wh i ch ren d er i n sen si ti ve to expl osi ve i g ni ti on, an d expl osi on pyrot ech n i c an d/or det on - ; syst ems or of devi ces vessel s desi g n ed t n i n g to protect st eam, ag n st compressed overg ases, to g ases or u n stabl e react an ts; typi cal c) syst ems mi c di ssoci ati on or d) expl osi on d evi ces or desi g n ed to pol ymeri zati on prot ect ag n st exot h er- react i on s; work from in e) th i s wh i ch t h ose Th e the syst ems or preven ti on of to su ppressi on syst ems Exampl es of the pl an t fi re part the desi g n ed i g ni ti on of th i s of d evi ces of d epl oymen t scope l eft be su ppressi on for u se in d u ct s or mi n e g al l eri es; appi i ca- experi en ced for the the of su ppressi on appl i cabl e su ppressi on fu rth er i n terpretati on wh o in i g ni ti on is for 61 64, refer of 61 64 i n ten ded mi x- protecti on paramet ers the in appl i cati on expl osi on expl osi on in the u n d ert aken expl osi on real i sed represen t i n g parti cu l ar th eoreti cal shal l mobi l e su ppressan t ; su bstan ti al l y 61 64 in di t i on s val i dati on syst em an d n ormal expl osi on apparat u s t est l i qui fi ed Th e or of : of du st/ai r met h od s operati onal fi xed t u rbu l en ce effi cacy of pressu re defi n ed of n at i ve b) ei th er t h an expl osi on s ly Det ermi n at i on the ; ex- fol l ows r I t sh ou l d of : syst em ati on u se wi t h di stri bu ti on vol u mes th e materi al s r Determi n at i on 3: t h an Scope q u en ce Part the tai n er; Th i s Part g reater pressu res l evel s fect i ven ess I S0 protecti on of pressu re, h ard ware; d epl oymen t Th i s more vessel s; fi tted the l ower hi gh operat i n g pl osi on or materi al ; effi cacy on e ; c) the rati o ven t ed operati n g u sed f) by i s a fu n c- f) pressi on ch aract eri zed : e) t u rbu l en ce, aspect i mpede h i g h er th e t h ose is l i mi ti ng val u e are paramet ers: of protect i on of I S0 expl osi on may preven t for the pu rpose mi xt u res measu res, 61 64, to speci fi cal l y expl osi ve be wh i ch are n ecessary rei g ni ti on ou tsi de after i n the part the of cern ed I S0 61 64/4- 966 ( E) 3 Defi n i ti on s propel l i ng (typi cal l y For the g i ven pu rpose in ti on s part s of , th i s an d I ntern ati on al of I S0 St an d ard, 61 64 an d the the measu red defi n i ti ons fol l owi n g pressan t wh i ch pressu re Th i s tai n ed a by pl osi ve or Appl i an ce can be pressu re ch emi cal tai ni n g expel l ed may be react i on pyrot ech n i c by th e st ored su ch an expl osi on acti on pressu re, as the of or su p- , t n ed be ob- of an ex- devi ce su ppressan t : wh i ch , i ng wh en di spersed expl osi on pressan t s are ( powd er, in in wat er, i nto g eneral ammon i u m can Th ree the arrest or in Su ch fl ow Powd er as pot assi u m a d evel op of may an d recog n i zed or t n th ei r pressan t ti on, Addi t i ves an d/or 3 su ppressan t : to h al on may i mprove Wat er be the to a devel opi n g fl ame on mon o- sodi u m as to su ppressan t su ppressan t : fl ame an expl osi on provi de frost di spersi on H al og en at ed ext i n g u i sh i n g propert i es a) bromoch l oromet h an e - b) bromoch l orodi fl u oromet h an e c) bromot ri fl u orometh an e h al on si g nal su p- is h al on - or h al on su ch bar = 05 Pa su ppres- ki l og rams or is respon si ve in on e pressu re, to or the more of t emperat u re by or arran g emen t provi di n g sen sors, an of th at expl osi on appar- respon d s su ppressor pressu re at i g ni ti on to the of PA: Th at the react an t s expl osi on pressu re th resh ol d, (pi ) , at su ppressors wh i ch ( see above a fi ri ng fi g u re I) su ppressed h yd rocarbon su ch h al on above in expl osi on the pressu re&rEn : pressu re a su ppressed at i gni ti on expl osi on even t descri bed in Maxi mu m of th e ( see over- react an t s fi g u re (pi ) , 2) protec- wi th Test met h od s as : Gen eral 21 : g en eral , the apparat u s the eval u ati on th i s part of I S0 61 46 is 301 ; si on 2462 t pi for syst ems t Detecti on Fi g u re the in properti es i gni ti on 1 as expl osi on ag n st g as of th e an d effi cacy du st Ti me, I wh i ch expl osi on , Devi ce more expl osi on appl i ed record ed in di bromot et rafl u oreth an e of si g nal pressu re su i tabl e d) vol u me measu red to 01 ; - - Devi ce devel opi n g paramet ers on e detecti on the bi - addi ti ves recog n i zed or effect i ven ess u sed i n cl u ded Mass su ppressor det ector: tai n i n g pressu re, wat er g as su ppressor radi ati on expl osi on at u s, 2 by’a en vi ron men t al su p- combi n ati on based bi carbon at e su ppressan t s properti es wi th produ ct s the sen sor: cau sed act u at i on su ch st ored su ppressor categ ori es separat el y su ppressan t : ph osph at e, th ei r tai n er, u se, properti es carbon at e a t n er, in h al on ) powd er ext i n g u i sh i n g i mprove t h at t n ed ch arg e: wi th i n expl osi on ch an g es the Su bst an ce of pressu re- t ype l i tres an d/or Pressu re st ored i nternal may acti vat i on a bar’ ) su ppressan t san t su ppressor: in pressu re: in defi ni - appl y ag en t n i trog en ) t Su ppressi on of expl osi on expl osi on s t su ppres- I S0 Test apparatu s 3 To determi n e expl osi on A t est si on syst em to sh al l u n su ppressed obt n ed i bl e est abl i sh in be the u n d ert aken expl osi bi l i ty the effi cacy st an dard in m3 an a test resu l t s of expl osi on apparat u s wh i ch commen su rat e apparat u s for the performan ce su ppres- wi th test g i ves t h ose severi ty, sen sor th e su ppressors sh al l u si n g be of to a eval u at ed a ran g e respon se; ran g e fi tted see of appl i cati on ch osen ag n st det ecti on fi g u re 61 64/4- 965 of test (E) parti cu l ar vol u me, expl osi on s pressu respA of (or the defi n ed equ i val en t 3) combu st N OTE materi al - Th e expl osi on i n dex an d K th e n u mber of su ppressors are sfan t 2 I S0 Th e 61 64 the m3 test i s su i tabl e fol l owi n g apparat u s for descri bed su ppressi on reservat i on in parts syst em I,2 effi cacy an d t est s of wi t h 4 To pl osi on : thei r a) the test pl osi on b) the pyrot ech n i c d u st an d /or Th e pressor( s) th at are of to To pressi on of syst em sh al l su ppressan t To the vol u me, be very smal l er ex- kJ ) u sed to sen si t i ve d et ect ors of detect i on t est apparat u s more order fu l l y l ow to attai n Sph eri cal l ess performan ce severi ti es in the ran g e of sh al l t est be appl i cati on fi tted eval u at ed vol u mes ( see to ag n st fi g u re of l arg e mu l ti pl e test defi n ed ex- vol u mes, expl osi on 4) det ermi n e su ppressi on vol u me, ag n st g as an d fi g u re d u st N OTE : be su p- desi g n - cyl i ndri cal vessel s wi t h are preferred a on of a parti cu l ar defi n ed t est the expl osi ve is requ i red t est sh al l the be Th e apparat u s ran g e syst em a seri es of expl osi on s of ag n st al ternati ve vi ded t h at resu l ts i n creasi n g th e a it h as the det ect i on defi n ed been in determi n ati on a pressu re pA are an d the su ch proven wi th su ch of of it is a) th e th e syst em; the su ch be u n d ert aken proced u res pro- met h odol og y u si n g the g i ves test pro- be d escri bed possi bl e to severe appl i ed expl osi on pressu re, the st ren g t h i n sect i on an expl osi on det ermi n es desi g n can of resu l ts su ppressed mi n i mu m most can t est obt n ed test syst em appl i cati on t est s t h at t h ose of a syst em proced u res ran g e an d/or su ppressi on syst em, eval u ati on s eq u i pmen t commen su rat e Th e of Test s effi cacy to i ndu stri al in PRED, of th at pl an t accord an ce 4 det ermi n e su ppressi on syst em to wi t h the From ascertai n expl osi on th at can be su ppressed by parti cu l ar in a b) u n d ert aken severi t y an d effi cacy t est for the t est h azard s be K met h od s I n terpretati on wh i ch su ppressed of sh al l a accord an ce from expl osi on eval u ati on s of in appl i cati on in su ppressi on Th e det ermi n ed su p- materi al i n dex su ppressi on ti si ng ced u res desi g n s expl osi on expl osi on Al tern ati ve effi cacy Th e Expl osi on su ffi ci entl y expl osi on by the su ppress vary- 2) Th e det ect i on - st an t a mi n i mu m or t h an sh al l ch arg ed recommen dat i on s &ED t est ( see en erg y tri g g er effect i ven ess a si n g l e i n stal l ed ch osen N OTE - rati o ag n st pressu re expl osi on K in man u fact u rer’ s expl osi on i ng the or requ i red syst em the (total can the on e determi n e test the procedu res ch osen wi t h for 4 di ameter Test i g n i ters mask vol u me cen trat i on appropri ate syst ems su ch a l en g th on l y expl osi on s can pressu re l arg e, is the fi g u rati ons su ppressors: i ni ti ate vol u me det ermi n e su ppressor pressu rePA an d t h e n u mber of su ppressors are st an t c) the d) the th e maxi mu m a defi n ed appl i cabi l i ty su ppressi on detecti on pressu re of test resu l ts syst em pRED measu remen t s Go od Fai l ed su ppressi on t K to ot h er effect i ven ess su ppressi on Fi g u re th at can be u sed to expl osi on ; vol u mes; as correl ated to I S0 61 64/4- 666 (E) PA Fi g u re Nu mber Fi g u re Test t est report report jj sh al l i n cl u de the fol l owi ng d etect i on k) i n formati on; di men si on al b) t est cl n at u re dj expl osi on an d of sket ch vol u me( s) of I S0 th e of the test the i ni ti al expl osi ve of the fu el ( s) fu el (s) as speci fi ed in parts g) n u mber, h) su ppressan t ( s) ; ag en t ch arg e( s) in pressu re( s) each of the ; su ppressors; su ppressed p) d at e q) t u rbu l en ce expl osi on pressu re( s) Paan ; expl osi on addi ti on, test; th e i nformati on , paramet ers of the fu el ( s) in the i bl e Devi at i on s wh en d escri bed an d of i n d ex (i gni ti on del ay) t, report sh al l wh i ch i ncl u de may n ot al l be perti n ent fu l l y observat i on s descri bed in a) to q) pi ; ; t ype, sen sor ,2 In pressu re vol u me( s) equ i val en t ; 61 64; u n su ppressed propel l i ng su ppressan t r-r) above f) (or u sed ; i n di ces test PA apparat u s; an d ej pressu re( s) ; su ppressor m) a) su ppressors respon se) Th e of l ocati on of expl osi on from the d efi n ed n ecessary, provi ded in report the test th at t est procedu re su ch are devi ati on s permi ss- are exact l y su ppressors; Test men t, reports sh al l n u mbered be an d certi fi ed d at ed on beh al f of the testi n g est abl i sh -