Document dnRbL0qd2vb3nyJ6wVgE2EvBB

"ac:.. ttSSajCTO i*Fa _ $?<&. ?. . . .'Wi- .>\ 'r5*> ;{Ss 4&ss C-aslsaS Er^cSfw 3* 6j' Sae& fa fesr*`a^ f:?' e: ,cr- fe- '.V' : V: ; . . : 6:3; ' i; fell ?:V--r. fis- fr - Is 7,? 'r ' i : :-. . n-;-. .- .- '! Jsau&s> ' ii; icyZb zzr- \>g m.. d.u'.i cstf-asa? fa:'-- tsu~ c -j > 1 - - li Is 5vrc:i.';w ss et tfc fi3ft2Ct e& Ss&S** 5->a4>, JAy is t2 tbSSsMiX fcsaSB^ar* . - iSa iscsaaetiaa of tfc$ try!J*ts* fit Ffeali&sji'* s3 resesily ss&a fey* "wg3wcssis* .to# Lead lefc tr ,, ,, i^saia&isse f-s fell^sSssg isfoiasite^ comsiciKl s.t& W ertiael fcaH-r .it, easss fesw ttea lead Hales la Vta rustles t--etosd c? p?o t a period of three ysara* terrise, massa . . - . .v -, .- Cr*"irrallied water U first iMr&^eed to t&a ee s rsostor. fe&fittld *ei4 (5 Bs) le added until the oexeiioa is SS3 /lilies tfa# task to a depth of 18 is* tad rtcrtias as asotharaia rsectioa. ilasinea trWg-drate CpirifiH alu.-,lre) t* added sfiieh further ltxra&sa* the tenpentture to 2LCP to 260 T, only 20 to 13 aimtee Are repaired to raiM the to&fr&l*ar* trm rocs to 260 T, The reaction it eeetieued tor lj to 2 boon, "H belag eostiisstiaXy asitatod with ilea to kj) the aTanima aalfate iva Ita aolidl^rias teaperaturo of 2109 f tttatloa and hatir are anoealished alealtSSSUBsJy fey ei^ctirg ft throagH aetroral fereesa e&atora arraagr.^ tcsynesCielly tthia the tank* 'fM* tyatca afi'octiraiy eliBieaiM lead t) oollg asd padl< wSwsle* After the reaotloo ie Ma^leted tfea featch is then Piloted to &* t3$ aloaicse* Cilfcte aad is kept tor i`:? hesrs ct iyj* to ?, Jfertfcar dllutica 1* toi ia ttl* tons vatil it it full r ' *.% efea aslctis*, tStltft <wlm listtid at ma to&perat-;,r fete fciutiss f. v- ' of the UtK late a i-viaUo* phrperaUoa twit i% la fVr-t ;.* . Ju :'v j 4 to ,lEe fi *w*t*o ef fit* s?4 rt*y is ~,T.- E-t eevere wrrie*, Hr^sitoved fejr k'--7 djs$i4 ths koore* ^rr'5 yw. S?y* Its# c%# os# feetiH C- LIA09873 too reaction tarsi' is 17 ft., 7 tn inside e4 T ft*# 3 is* is (in mnm&ngB fa C&HS&eci Bulletin &, )# Is e !&*&* teajsieal ltf ItcLsg * ttort tnrtaUod <ssi et^aat** by m<Jad *35S & 3* *wrfc ffei* fstwed is(U*tetni7 *ftos.gs?:,^ aat-tM perfect ws * osU Stwt dUtett&S 0 &3 S*3 ! SX'*"X3& SXW^.-^ST 5*/. ty tea alas* eetatlaa ses* e extorsive as to Sffcseir yoplaccaost of 12* bottom m3 e&dse to a tessigil of id la* .. >: . .... .. . . - & && teai* 11eU, installed ift Bzsfe# l$?s5# v* fast Xs*a nss'rf.sa fs . , t&sg, SffeS# sn& Ms earvod to <Sste. Its fejttea and i^* itQ-it& 4&e ' telisjissi dysfeel Iced# too elij&tly coves top to l**vd vitl* ISO* c&s&ssl testa &d&<,fec& cimps Persisting of fcelf*cci Stool w*srd by 1**X?> tolteFlCT c&okiccl lead 7 in* vide ver* installed 00 to-t to.- cos ltotog fs etrappad every & is* ea th* ride vails* The cot Urn i* *erarcd tj pM*ll2> abeetood eto !&*& tsXlnrbiA canetl lead 16 to 18 to start *s*i 3 is* belted thTK5^ too eteel Ur- !*#*.& euppertirg steel T* b*a*j* trrix*tb, ffea teak, locitad is a aeparato ."c-rs into, mc eld* opec to tha abaur-ocre, to supported by etoal *1* bees* to.ith la ten. ere set ea concrete foma, la effort# toe took to *ir<aolsd elttwcgc no forced ventilation to employed* Bo repairs of too llr.lng acre required until October of to* fbllcoiag year, sixteen sectha later* ItcmfUr, sporadic prt'iiiny bocaa* increasingly frequent* 11 repairing of to* lead limns to vad< by * lead burner saintalaad at toe refinery too vas Instructed by toe oonpiry that sad* toe Initial install** tioo to use ehesioel load rod* for making repair* The valla *hov toe le**t amount of bulging or sagging between toe etrape, and require toe least mount of repairs* toe area 1/3 of tot heigM p toe side too** to* least evidence of corrosion or Incipient physical break* down. lbeve tola area. In the section exposed to hot corrosive foes and toere air is accessible to toe lootin* eolation, sees* corrosion has taken place aloof too crest* of bulged llnl^ Crack* and perforttlon* of tto tank llntny on to* bottos have casaed toe eorst trouble. The lead between strapping haa bulfed in acne eases as high aa 3 in* above toe tank bottom* trouble *ith to* llr't.g It particularly ever* In this chcslcftl reaction boesuc* the product forucc la liquid eluslnue eulfate, which scope through tixor hair creeks Into the csvaty under to* lead bulge# filling it and lstcr *olldlfying toca to* reaction oocses. This yrewaU flattening of too lead lining and noecesitete* instead, cutting toe bulge opea# removing all toe solidified alunlnua sulfate, end then scaling too lead break# leaks are detected by *#cp holes) toe presence et aluaiwa sulfate being noted (7 toe appearance et etalsetitoa# Hie source of difficulty vtth too lead on toe bottom teens to be primarily foe to the appearence of fine crook* ad3*oent to toe voided seems# oa the asms* toeseelve*, cm er adfeoaet to void* from earlier repair*# or occasionally along toe create of toe bulges# The area ourreondlng the nstale of toe eductor jet ms earefklly examined for Indication* of failure A:* to tores Von# Be rich failures mere noted# the lead apparently Is unaffected tgr to* et*us l*t and tha arirUng cottoa of toe reacting solution# ,j--yrnymt^ijiysar - "^'r ' # -a.ITueiW:!;e^iji, y ii ^iii')i'aWWggwpcii!> m;vn. LIA 09874 *,, ** V ' *i ' *' '. r. * ae*H$&JL maza CL :. ;. !*'. ' *3f ,-; se3k ? StsSs^ is wwstt*i*4r res*t* g&jsiesS. eac-*** '*- Th t t v ^sS. fir ft t.;.;.,fe C'.Zivxs*; i* <c?. ' ^'-v;* s eu**?;-'.y' - i* ? 6-vr; fofrfisS ? tfdf-, '." ' ' T'l*3 to? fc- vtv: r*'.; n\. ` '^-"v * ' lx4- %.:v, r. . ,'i - w ''V i-i .- JC--' i '-' i- -i- -' - - ieg ttses ft# |Ft;. es fciV sv; g&cs&e '* *2A&res2.<nr~% In; . * et?ft tfirfi it6a fssstir.C' - i-r`'l*'r'?.3Gt *?&.;& , csseesa* f&y feslsi'-'1: -sr, '. rstM tf i&ft e$rtass*e <eS/ t`- -v: '*' e^r^'^js S; '. - 3s g$saijr o k .'1-'- io 't: . ~ -vM $&**'. *:c i c*v:.--' .? ?......- v-& . * teste** feib tfes f" -" f-3 && ftSW&g i \ f'r' fcrv;:iv/3 ctcK^s te*. ' g^sg?;siss Stt epssrsiijra fs&l i'ist tbs load is tSia i^tsSietiea Sssa ssrs^ *3ll ea4 t usa f fcfcs?e yusra oorrlGs t:s tfes liaisg is e&aalea&3 eel$ by its pi&cis&l liiiie,ti*asj thst is no v?y isa tbs lsu fsllwf ta tits oomtln of tbs r^ifarie oi4 csistioss* gs^mrf Us> i&tfaftftiss cost mi tnevs&ssf a ssal-lc^ r^irs tes littitod ts ejrvteo Ilfs of t^is 1emails* tioa to Mtml s o t s Booths t boot. As poMiblo (tm of oxtondlita tbs life of thlo ojaipsami it is frc&eSils tbst s prc';-'i? t^ps of ceacnt coold ba foosd eftieh coold es^o as oslft> >, rosirisat brick ll&i&s practieol* Tbos S Xlsjwg of brick beteea tbs toed *; oral bat cheatcols niglit race*a Ailly protect the lood lintnf frwa distertlm by previdiat onlfora pbjrsioal support and also by iftsalrtiir it ecsinst i- ' tcKj.traUiro crtrtmee. Any loao;e of tbo oorrooivo eheodcds through tbs brick oould bs (topped ot the lood surfoeo prowtlng dassf* to tb* (tool 4 outer (boll* Tbs u(( of lood la tbo oqulfx.ent for thla portic-olor reoctioo is o^odolly opplicoblo slaco froodoa On* oodtoainotioa of tbo olusirrjo culfoto by tbo rooctliic oad hondlii^ apporotoo io osooctiol to tbo soocoos of tbo cotolytle action of tho finiabed prodoet* If tbo csteriol One hlch tbs raaction tank la soda eontlnxmsly fona s slightly aoloblo oorroaioa prodoet^ tbo olvsdasa sulfato beeoeso eonUadnstod and la rendered iaoffoctlTo as catalyst* Other e<rnlps>ebt la thla plt la adticb th perfweeace of lood bee been hipbly euoceeeful for bandllnd various concentretlofo of relfurlo acid includes atcrep* tanka, pipes, valves and bead fondnf tosere* The operators will centime with the use of lead llnlnja and hop* to extend tbeir life by utilising every poirlble oonstreetten Upwiasrtt f \