Document QMynQYDQ5X2XvmeDak3V611gE

uaCkSa ----a*>il--If-*T " wait **U-J*jfrliiir`4`i' iti LEAD INDUSTRIES ASSOCIATION* INC______ Itl MAOISOM AVCNUC NEW VO*K. M. Y. 10017 TIWll' -- * MM *1* Pg-KTOWtet Of CAUCED LEAD JODfW H*rold A. Martgn--ry Assistant Professor of Mechanical fc^laaerlsg Purdue (felvereltp lafepctte, Indian* Lead-oaku* Joint* In boll and aplgot cast-iron pip* for water supply *ad waete lines bovo boon used for ooro than century with *oet satisfactory result*. Curront coMvaptiao for this purpose, according to tbe 0. 8. Bur*** of Mines, la oror 70,000 toos of lead a pear. It ecetlsue* to ba tba wqpaatlooed leader la Joint* for caet-lros bell sod spigot wUr supply Bdas. In west* aysteas however, tba greater uaa of automatic appliances tdilrh require high tsapereture aod lore* roliesrs of water bar* apparantlp created *<a* doubt* *a to their effectiveness at tba operating teapersture* Involved. 1ba*a dotbts bay* resulted la substitution of other piping syateM or other athoda of Joining cast-iron aoll pip* because of tba lack of proper englnMTlng data. It waa for thla reason that tba International lead fine Research Orgsnlia tloo requested that I undertake a r**eareh project that would determine tba 1aa operatise condition* voder which *taadard lead-odca Joint* la caat-lroa aoll pip* will not leak under pressure-tenperatur* fluctuation*} aecood, to teat a aodlfled laad-cakvs-oeopren* Joist derelopad bp ooa of tba eaat-lreo aoll pip* aoufacturer* for high teeperature ua* ifeera tba leaded Joist Bight proa* uoaatlafactorp. Testing waa begun la 8epte*>er, 1963, aod it la ter cooeldered opinio*, baaed oo tba result* aebleyed ao far, that the conventional lead'tarred oakua Joist, Pig. 1, la aatlsfactorp for practically all lnatallatlooa. for tboaa few lsatancaa Miere the teaperature of tba Jolot will reach teeperatUTM approxlMtlsg 200 degree* P, the uaa of the laad-oaloaa-oeopraa* Joist, described later, appear* to be auggeatad baaed oo pilot tecta. lb* tart Joist* are prepared bp calking In a vertical poaltloa two $-ft. length* of etasdard Might cast-lrca pip* 1s tba cocrwntlooal aanoar and tba* placing thea Is the teat rig (Pig. 2 and j). Is aettlsg up tba tart rig, rigid clawing of tba pip* coda waa purpoMlp lseorporatad to simulate a aoat extras* field caodltlos. lateral aoveaaet, * oat algnlflcant caua* of leakage, wa* sot controlled. Aa a reault, pip* ovenent during tba taata waa nil la the longitudinal direction but quit* pro nounced in tba lateral direction, lb* arcrage *crv*n*at. obtained tbua far 1* 0.036 Inches. Presented at tba 36th Annual Meeting of tba Lead Industrie* Association, Inc., cb***-(hrk Place Hotel, 8t. Louis, Mo., April 21-22* 196b w'.'mw im.a.w mj ix my|k1 ^uu .jpp j u j u j j j iiii.ii mi wsq WJ|Jljpi|I IWI'i tH|i #|j ptf'i^ i;M|> i> p | iwinwill iWW |qW |p ii i ^ ' 1i 1 1 1iiniT18T k~T i i dkiiiiiieMbliflilidMIliiiei i iiiBf Si ijdkinniilbi'atiiltiiiMMilMtkiMiaMiimnrdtllii^irianlinilaai ihiitn'iiiili'a^in . . , ------- I -A aa*r, .. . . . . . . . . . . . Harold A. Itartfwy Ferfonnaoe at Calked load Joint# Vm teat procedure# we or* twin# are m follCMi 1. nil teat tyrtaa with cold water at ID pel for 80 nlautaa, tfaua alaulatlr^ conventional eo-the-Jdb teetlng procedure#. 8. Circulate hot water at 10 pal until Joint reachaa . IfiO deg. F. The tanperature la aaaeurtd on the cuter surface at tba bub bp aaaaa at a tT#t1k( a device aceurata vlthIn raaaooabla llalta aa datarnlaad bp otbar ebacka Bade during piled runa. 3. Introduce circulating cold vatar at 10 pal 1mediately raplacing tba hot water. Tba cold water la circulated vntll tba Joint reach## roan t^rtur. b. Continue to run alternate bet and cold water cpelaa until SO cycle# are collated. The aerlea of teata nn In tbia narmer indicate tba lead-tarred cakun Joint# to be excellent In tba tanperatura range at rocn 1mp aratura to a Joint teaperature at lta outer perlnrter at 160 dag. t. at 10 pal preaeure. Pilot teata at 1?0 dag. P. Joint taa^aratura have alao pa owed oat eatlafactorp and aucb teata will continue. Tba lead-tarred oakun-oaopreaa Joint, Pig. b, baa abown In plied teata that they are eatlafactorp at preeauree up to 29 pal and poaaiblp higher and fraa rooa tanperature 19 to 200 dag. F. Joint teaperature. Tbla word la alao cantlnulnc. I do beHere it ahould be pointed out that the tart procedure# uaed would be rarely if ever eocountered In the ordinary waate ayeten. Per eraapla. It would be Boat unusual for aufflelaat hot water to be dlacbarged to cmpletelp fill the waata plpa building up to 10 pal and be continued until tba outer perbarter at the Joint reacbea even tba te^ereturee at vfcldi tbla taat la being conducted. Thie abort review of tba work Z an doing at Purdue Obiveraltp abould be cooaldered aa aa latarla report. Tba work la continuing and a ccavrabeoelve report will be laeued then tba work la concluded. J >pwwfpptp.ywn npjnpiy j j M mm- I