Document qjOy0gpnZRqXy8jVEdNqZeRE

L ^ 418080 LEAD INDUSTRIES ASSOCIATION. INC. aaa m*oiom tvmui *rw roa*. m. t . teatr MM (Ml *< - Aucuat 6, 19& SUBJECT: Reprint on load for Rolaa Control to tba Ihabara of tha L^vd Induatrlaa Aaaoclallon, Xac.i Tha ancloaad raprist of on article oo itolaa control fron Aaarlgan C<y u prepared by the HA tfT if'.ir dlacvuilona with th aditcrt of that It *rpo*!-*d la tha funa, 19^ $tue and levtral dotan requaate for additional lnforsatlcn haw bran traced to It. Ceplaa of tfcla reprint haw al*o b*-n nailed to our Mat of architect*, bulldar*, and contractor* (about 12,000 In all) and vlll be aada available through the `Lead library' In tha next laue of LEAD. Additional coplee ar avallabla for your ui*. tha flrtt 25 ara free and. In bulk, lar*er quantit' nay he had at our coat of $3.00 par 100. BTtbd toe. r aaeeontnetrf an. u ar.-i rii .a. (. v - b b u ). N 2335 * LIA18081 How to Stop Noise By BRUCE FADER Mgr.. Tccrwcai S^v v c m Le(Kl IrvXitttrxy* Amo c miIo o , Inc. Omtrityuti^d by Lead IndusUwt Association, Inc. 292 Madon Avenue New York. N. Y. J0O17 fHqiHinj from June 1964 issue of til IW *, Mw Ve* If 5 x^ a* limWJI* |,,| iifl ^i. mm w* P i r* o 9 1 `-^-V ' 'j'-J.'g KTtJt- , -E .m i M> . -** *&* N 2335.01 LIA18082 r hogsg $ we*, r* * +* llmk' c How to Stop Noise By BftOCfi PAOCR Mgr., Trctvwcd* Services Lcdd Induct'** Aoc<*t*on, Inc. ffmp tor i wiw mt ami lwi What do ; beer? U you r rtJ' tng at ham, probably nothing more than (he (bdtirMhrr or klrvMov th( If fro ere Ik you? office. yv proUMf hewr afreet tmw, two tfe. phone i arm reel!one in Bear by of* Am. typewriters fWkm ivijr, end pouuUy even trenafarmec* or hirers machinery an mo m ether floor, You may hare been tmeoaoctoua of the %oUe unlit you tipped to listen tut Omm background poises have been vying (or your in troducing errors In your work, and Sandpapering your nrrm In a recent article. Time maga* tine quoted the Air Ferre's Dr. m Gartke act nolir. *1t Impun bath manual dexterity and accuracy." Mechanics working near bowing )tta (or example, were inclined to mob throufh their fob. getung it done rather than irtunt it right The same artkle cits* a study by the Aetna Lite Insurance C When Aetna improved the acoustic situ** ion in iu own oflkee-- # typists* srrwn wo* daw* by tf% a mockloo apscatert made 11% fewer sJet4*s e swplsyes temeoer droppif 47% e riiMlMlm flnwnf )7J\ Naur need not be deafening to be o serious hindronce. OflWw need WUviKjnn and typewriters and In dustry depends on dynorruto and dteseU. We make more noioe than any previous generation In history and mty lew mechanical aid and technical advance adds to the mm lead. However, we ran rwwd 1% bloat people know about mate* rials that absorb rwnw, "Acoustic" cctUng idea, carpeting, heavy dfopee and overstaffed furniture soak wp mm and reduce II by rutting down rrhes, OUiy though, wry few people rvalue that there are other methods of noise control--and tom* of them are much mart *ff#cive than absorption In deshng with the moot common not*# problems. One of the beat Me ermtml mraouirs consists of blocking the paths from the noise source to your tar. To build a good noue block, wr well, make it Jimp end heavy rather than ft;/! and light For eaampi*. a sheet of Wad foil only 0 004 inches thick produces the same effect as a sheet of %a-lnch plywood, despite the fact that the lead le lighter than the piyvrooi (about H pound per ii 1 &0MiamtoKiMm^ettb*mMMkaegmiUMKmMtoMia^SmiiiiisKii^aiaMamMMMUi LI A18083 IIAO Lr*d liilij klvilh r~r( 4otl.W tj* a <c*>tv4 la r*Utr>Sjr Mwitl *rMel A rnrty r{t*> -VofM tai4 hA*f>r< V*4 lm* bprr% :- ttiiry A rantfy at r<V. il Ur 4Tjf wwli kf at i Iik Ii llv m itrprt'ti pi* lk <k 4n>{*. nr. Il tiw r*tw>l MO L*l Wti rsa to tof>fx*tr*i < 1 o* .brtl In u.'t 'm' lrS *brr* a-l rmnd (nt Uflu i* lwi3 a J>| 4 TSc rvt taUr ii-t nl-j'r% ihr tf A Ufjft fr lUaa tb loot aka*. otMfrtn!y *'H Ut>l u > rorind i*b Wait tap In lltrrMC Urtppimt- I drop Utki. ri tfwWr rrrrtf txf 0x1t>aUtf tx-mpcfHirrt ct ioflof llltn ao4 nbfll. KIM o( TtiKl. il ntarlmm *u*l <r*|o air itn4 U* tupfool r' * Mi mniitllf at mppatimf tl< ir*4 ihrtf |IA*I ll# flrrl iMl aith Sit H1 ban Ivtrftnl ftt fmptrM Mrmli uurir ti>f trail (mint tivl lhr<(S it to lb* ontif I'nl Wl Tbr* trp in rorrmi with trip at M r!rtn( to |K Wad lutiftf tithrf air ihw |arwi| t natiMna, malut Wt `MtUtr to l(n iwTgint dmiab fviv* iMxl In to tfo 1h 4 U*|i f-Ntioils do* o*o-f. 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W* Mtrr**t *<*** Ut ntih 4 I* *!i>nr lr ii*r 4r**itr TW |4|# m ralvrt^wltfy ft <4iJ tbry Art nwratt*::y femrAUr m*trri*k f* Mv tk laj# Spr*4 <*. 1 evj lUt. tbr bwt tr>k* ui A- .<J.|tui / bfKk AT* *]' tray ^*(0*4.'!) I**V S to | |c* ,rftt ^fwn k by t#*4 iTr h H lot tK*tut*J 4wk rmttutrt Vk km! iiru*, Ato % *pfy f%m kwk terli* Ua b mI*] Uhl tbrtvfvt*. *rt a* a mnobr*r* Utitri tb bko* It iflio (k r.fVt k> k Sr *k li a*h ! btw k tatim h > iK*i *j p Uiu mJ Urr H A* fklf^lJ t<4h] Ik |e*J tk*! tic kirk auk t!J Lr d* Uhi (a *3*1*1 tk Utter m fr< a^l* (Aiiwi by tia Irvf U**lnJ *4 Ukf>iv rvo|kftr<f uvj flrtbH T1-* r(*4>tu4i vhttb *mot tb U ptaW fool tE^<f^nx'*j AArhor*^ (at rkrleoA of km! Ari^'Utck fotittfiKlion i/r tkr rootmt pjfchuk* my \* Minima**! by 4j *-;**<! k !o lb# k Hm tfur routine llifk Yfyrnkm. Rrlrm*| u* tm* prtUitff* bryi4u! th# s*rH4A**J lurntm* LriJ AcUIrkt Cw--tnutki l#xt* of kmi. iW bruk liAief ^r>rr(k a a IMoUtrti^ Uyrf rrvoHiftf ia A tem(r*tifv Al mporUH nrtM of rl^sur*! tv#* gTA^HM r* t>*<v*rAtJy, AlthoofK th* irm- Hhuctmo okiek U kft dniml to fwiM prftturt tKm 0* rr--tl At tW lirunf it4jr Ik meat rm tf#4rtjc*s br (mm XJO to MW I*, tk A* (W k**>liic< of fofTutrr* *lumr* ao 4 Utnp*r*tur? of tk* km! mrml*rAr h r(l kick rfamtmg tra^miufTi ki Wktk itkio h j inrtkAAKAl limit! Tbc u|*prf 4rrtkf4&r*t of Uo4 ond-btwk (owtmrtioi kiuutioi of Urn typA of too* --o kmf bnH tkd U0 vttk M o^-bnek trurtmo mmly a fvoctioo of tht tlutk* jm*1 "M"'- 1,1 u-i.iiiwum .j u iiimiii win' uigi*vp jb^. i.iimni mrn 1wmi,j i>"u*gqoy-mminp.n> mi ifno j CTima. un1^1 i--m i * v*ai iHIAhUlftjl LIA18085 I MU p* ,. k ( tNfvoal d it* N: k IthiOtf I'* 4*<'pb'. 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I*ftrd U |rf ftM HtlfufK nxl \Am **J t lAt'K A i f ri-rminf h10* iib feliKh tff ly i*ym ria*rtr U tu*h mIm-* m`Hag l*nrk iftl UrknJ ftilh irvl* H*"d nthiM. lrauft#tratfd (h* cffrflivv t*** . I iU Wa.1 ftrrl Wvk Ml (t4 lif'Nilk ft |f| frhrftl, ftN*Nf (4 M At ot(Aftttf fttll attack U*4 tft ^ tiifh M<!f44b4 a^t.1 u rtUi^l tft lb* ftiil^TiiU' j-4*nty of Utk '( U N<0* fa 24/ U*H 44 flk'itr, IftKftl*, 4fat (Hume if* 4A f.<ftmtr to k4 l.'tl* <Vnl2) |U |Mnt|ftr* |tvtl4nj U tt# lfhl> t-^vk ItfUftf M to prtfwi lb# |wftrtr%Ui4i of It# |* !%f Kitiliian li ll# Irftd TV ^r>l4a/ t prftrirti* )-f#k rrry fifrIJjr, thry tfr Kifrtjirw l/W fv* md C4 |#v( m rtfivbd readily tsl# lanoti* tbat^. *>H Uffr ((iinlitir* f rtlivlnl 'trad pifw ifr tfi lb# UjtUir* fbritiKil. 4ft>t t*latrt t 4* |'i(# f. f f 4*1 U r* -f tfi a f4ii * t H* .( I hr ftrit fthlittjn { Wit !'tf>4n{ m 4>iirta I** t# # ff*>. n fmt 4l*rv. h tf a-tij^itrNY 4f>t `f (+c\Ui? ifb ftf.Kb tt V tfv*<a!Wt UW# ftti* rr fnj`4tfTl i(ri:fkt ji** may V fiiird and j`Vkt*J ih mv 2 ud Wit Ibxne^ IV tb* rs**t fti!I V* ibtftftrf. rta n^rf d ti# ratitf of it# hrbd h W-m iUn f*4*r tic#* it# i&tide 'Jumr^rf of lb# pj# ibH e^lff lU cd b##I` U mfif`#rrt by "byffcit* eftt** 4ft ft'WSnf layrf of Wa-J ftrf Wfttb rriftf V mad# t*y n#4fM of rol/rd ^h o I* Wi**i ib#t iwintw of fftf# Altrma* tivrly. t %4iirty if may V 4# t<#k flrtm, fill .i al Wad o# 4fti iiuocuftj trftd TVw *r* H4(<|<lKd <ft Unit forib#: III With add Imd flftAp* to 2t With coat irtftl Q*att iUp-< ft ttaftira. iTi With oYrr-Wfltth for ftrUI m (V Ml tt'iifc plain riwW fuf ft#d.nf H(tfii<ftMal fun* of Wad *# ^<t alWiy pp art fnwfallf (untinuoutly .opported a # a a lftm.iW}.j.,'Ujii, JPUHMMI, ll-'i!.-IJillft .'l4ll B^IU yW^ftll|LUJIMi^iyil.llI .I^IU LIA18086 )m UD I* fh.1 * Ovlr# lrrv*t<a nr Ml iferially rai*</v'd iSra m*u: >!', W.'|I rw m Oill-elof It ln>{wl<l Itbdi^ *-*-I, M r>TTf II M !>< rvM in te.-itM ,ib *I-lb^ berxb if Ibry i|>l|li tl bi(b * ftortoaura Uit pillim TVr iradii.eai nnlMf a! pip* ba* tb* dbiuUca* (bat ty hali te* lUf (mm dur.ift I* lb ivptru M ft Kr*l f te# Itbi |j<* <iN tiihii (hr t<ldf Itr Uffef hdH I ] IA UVtrU <<i4*W(M %<lh ** ut % ! m #*(rsrW*J fr<4n 4 pr< rv*t 44.) iiw4ui W%4 TW (^*4r f*f* na4* el ftwft Ire-4 * I Mi ( <J4'n*'rf .(H 4 *II 4< 0* tl** f*1*r* T>* ritrtw* of (W Mb*f |^ 1*4* brrft rttnded in tl* bhepr el ft Hftf U) ntfft fi*p* Fr* ciptuui ltd (ituintt tr Udrtod. aad lb* lofalne of tty Wk U r< tin*y1 (Tllnl of Maly tnnnUi be r*- *M 4<**J l frtfttft eoftrrfctftfity 4*4 f.er^-d )i* err wH hi etftftjr ) t<rtm n^firif^ gtr%irf buffer* r** TWImi of M ppf d<i*li na m*> **1 lafton, HKloiite rarairt tilarb. lh IMtt. tad pmr-rt la b* UtlM, Int atiopb. if til Uxktra M fa!mUl*d I* lb. axitl rhinoer la arraanad* t fi*ea 4f* Uvl 4^d*t>d*4 iWtf* firvtrr* Ibftrv U^-ft f-jrrr--fttfly p'er* 0/ 4(*J*-li#4l*H Mel* ift kUM f> 4bi Wrt i*u a 4 *lftm m d<ftr-uit or heiftM *** of nh#rt #Wfnriiy m uhrbprtufy* >-M mU \j*m& C*tt#d ftf*. t'e-lrf ywnw, tl4rt<ueal *>11 tijrkora tlloanI la (mcpratal* f*e bo. U-i' --t H (1* raatoa a* ikuot TW wlmy at abwh foawiitaraM el hiftS trer.fwfetaf* at rift** h*ft*i 74lrff* ffretr%( trfcftlb M rwefieJ W4*1i4H trr| <+ f4*t if* t raraii* ndiitn-a toea h k m th turf if* jwf* or, mutiny. We4'^rr*<l fey# of bad ta issp rual faM.f ta the rtl km u t 4 fVTkf.r^ Urheb^ir* bdm!ftf tu k af nrtiKt. hi II diindl In nlibliah thrr 4r*rfihr,J rftflirf 4T wtdlilrrj tb* " a <hfca.tr ftbiwaabip Wl*rra tb* loo At ajftftnfen 14** e{ tl*r** f>r**iun. ta lUiailraiina. Tibb 1 abooi lb* f1 of la ftoektfift bcalrtf k%4 f*p* ft of aetratiSt lb* roWity of a JO pry (rol *! fan* teal aofuOna at JJ*C iTJ'Fl aeraa lb* ruffat* of bad: *trd i* Iftt rlreftrti ftiwj tfuH Tlr nwJ* (ft Irel m rft*4 ft ta trimtm br Ub* ptf# A ftrtii bin tft*r*d tA AnlUft lr%4 ft Wnf*b cf rvneied 1*4.1 ptpe Taut dmoliWVlM tv / r*MM t M m If mM m ftkfffc Mwrf1fi !ftKl* 4 pft^irrfy pfr^rH pip* ml Hr*l T><* rftdr el lb* k*d pip* iff mH 4*4 Hraxa pfrwtft to ft* fftftd It 4ft4aftrl tK* futrf p*f* Pmmft M ru*4 ufttj Ub* t*mp*r%twr* r*vKr* tl* pruftt ohrrv W*vl(44 erntf* b*t*va tl^ ltd 4*4 H**t 4*1*4 by pr*-1iftamg tK* H**l ftrtK ft tKm *r44*f film la thti 4 4jr. tK* Ird m m4 t* U 'i*r*ld- l tK* rtrrl TW frame of bad pip* My b rrUf-bd by d**i(aMif lb* lyitra to mHr* tur fat* (ncln<e at awth a* poaobb, * *, *Iimiaal* 4nft bead*, aar liipf pip*, of bnlb Lead PP* m nperiaJly uMfttl okta a bi<b ral* f L* i* dmnf brnua* rt taa b* nifnd aad aatrrobbd Hbwr til/a fci'iac* aed b**aiiM rllrabd bad o4f a miaimuai of Mrf*<* fnotice. 0** of lb* bUraiiaf bad fod <b- P*P* Iftopfrllftf d Tfttlftf Lid LMact |^ra4*pie4r*iH *K*ftii4l*pformiftf tti* rb #r* ftf*mftd)y a*p*<tf4 fvf tK* pcrtrai* of ptftKf^r* * pufmtty ft ft*Ui*4 4*4rm oft K*i*lr44 ItftAft*. Kiiflift* rrerko, ritKrr ia tlw ftrUi 01 tl-* K**t, fftyhiAf from (4|y* o* iff*** rorrmt'O. and piftK<4*, iivilu4n, of bed dHHtftiiitift ia tK* tftM of ttd LI A1808 7 WMtK f'.trrtj la':,at koto any ( tW above rlaoaif.iellofte. although they IU|f pot penetrate the batnt ruopletefy, 4a low (n'Mliil Uuubb nwl that miy ahurtrai the I[U4 life--a pfvb- law that (an be minuniied thruuth the nee of proper toe(aftKie end Ubi-t T(lf4 fhee*Leed Uningt. Aftit 0m eumplrtion of a are uuUilalioa of tilen- Mr repa*re on an eld lir.int til the ntl-bd (burned! ereme are rarefolly checked 1a- nelly by the bed burner and ell obvxxw deleft* eofrtfted If It M HMMiy to tbeck lb* Mlftiant of i M veld fork U ok bvt( jacete t determine tie depth of fuuan, wfteoa of the warn can be trepanned iih trepenninf drill to obtain a crow art' U Oo a Umled liniet. the teruuque ba aka tern wot to (Wit Ik nature of the bo4 end tk tbtkom of Ik liaoit Is ntkt nif. boaaever, the ll m Jotrirtif*, mhereea radiograph* UfhMqoea proede a mure eflectne. noodeetruriiie tret fof weld aouadnee* For floMt aad m-ee electing eiemiaaiam of nl4, a liKmntl Of dye penetrant that k dren into tiny track! of pum by capillary eru.fi i often wed After the rireaa m cleaned off. tbr rhemxal mnatainc ta the impeded*** taa be dr- eelupcd of boffhl to the eurfare, *kt( it way readily b* identified, either by a bntht gluer under ultraviolet lifHl. ta tkf (aw of the ffuurewent penetrant, or by a dtrliorlive rotor, ta the raw of the <lyr penetrant. Iaterprrtata of rath indicathei M all important. Practically all pmeeduree in* tiiltitl tbr fabrication of InJ mult ia lk puaeibilily of Coofuiwo brtvwa a dfffft aad a umpk turface marking. therefore. It aiuet b* rralued that a huh degree of faccruorM muat nut to differentitt* be- Itrea a trur defed aad a hermlen turfact irregularity. Teetfcg Bonded Lkkgj Artd-aeth tnU katra baaa accepted ai ataadard taapeetion techrixiue oa boo-led land-hoed vaaaak for the detection of pin hole penetration, rurfara Imperfeetkma, and I*-cioily It Oil) aid deleft twheurfert lea t l iret, the entire bad luifan mat be ebaned free of any ml or K'raee 8line Then, a dilate fc .'i'ion of bydruchheir add it to It per rent acid I M freely applied le the re tire Carfare by bfuel < of raatAwag are! M alloaed to remain for IJ to 34 Ir Hrlorr Ike and u rbaned off. the bad tuf'aee may be nair-ined by an Inepeetif fur eet epute cf diecot-eli., or, better etill. the and eallied off %ith otief, and tbr i.'face alb-en] to dry and then be rtamirel A net (** tndieaiee either eurfaee p.e .!y ee a pmbole that bae not penetrated ' >* bad Karty ductdi ralioo indiretee a pin*--b that bar penetrated tbrough to tba etcel Repaid are utually made on the rt apote * y touch* mf up eith a bail bumrr'e tocrh Ret-ipt a/ear are re*novri| ini (lie eteel r caned m that nee ba l can k- l>ifii|ri| Afii* all ru*t- indieattuoe here been retarded, the acal-naah tret le repeated to p'e a Anal rte*-k A we-ifal method m the aatne tee*, m prtariple, but it la tn.ee effeetnre and u reetneted to Iml-eUd pmeure veaeeU The teeeel k Kealrd by tnlrmal atrarn peeeeura to aboaat 100F until thermal r>|uihbnuia e rear led At thu pent, the iteara le lurnel .ff aad prreeure raprfly rebawd from t;e ve-wet Air u tulwei|urnlly admitted and '.* liMil u roob*l and ina(<rrted for bubbba If aew are found, the teat u repeated After tLe aectod ryrlr, if none are found tne ltmn< u areepted aa |no |r *enl brndel I'Hrajonw tretr involein( the traneieue* aoei aad reliefUue of ullraa-nic a area lend themwlvre vrll to Itw lorali.fi ti .r.lended arrae and auhaurfart tnfliaautu and ran alao provide a aimpb noeebalrv* mrana for drterminin* the bad thicknear n tended lunate T*o baetr met bode of .traaoeur inepertun bare been Hard aucemfilly <n banded lead lininp; the reeoeianee method, and the pulee or echo method. 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