Document baVwZxw719jKvqy25dM68Dxno

ljt 0! pfistrsnsin WISCONSIN STATE BOARD OF HEALTH INDUSTRIAL HYOICNC DIVISION tati omct builsin* MADISONS Oetobsr 16, 1956 Mr. C, R. Msrosr, SupsriatBndsat Algoaa Ryvood sad Vaasar Coapaay Algoaa, Vlseoasla Dsar Mr. Ksresri Saelossd srs two copies of ths report of tbs dost study asdt st your plant on Juas 18th. Vs srt sits lag s valoaatar which Is paeksd la s fist black ease approximately 1 1/2 x 2 1/2 fsst. Vs asy hsvs assd this iastruaeat la your plsat during ths eourss of ths study and vs ars voaderiag If vs could have possibly lsft It la oas of ths dspartasats. I vould apprselsts It very such if you would 1st as know If vs did Issts ths lastmasat at your plaat. Slaesrsly yours, VLLitb VUllaa L. Lsa, Fh.D. Director &ZZjLtUj-JL \ Insulation Hygiene Progress Reports Wot. 7 No. 2 Summor 197$ from the Insulation Industry H)| Research froyrsni Editor: W. J. Nlrhnhaw. Ph.D.. FuNisArd m Ihr Ei>mrMil VntnLiKmin lln f i SrIAofl. M.D.. Dirmnrl. M>na Soiei Sclwni of Mrdrtar nf thr Cry I'noeney of Nr York. NY. 1002* Adtleory Com! of I1HRP lra*l I Srlftolf. M O.. ftofnm Dmnor end CVwrman E Cy) In Hammond. Sr 0 . V*t Prrsdrat. Amrrcan Canrri Sonny. Nt York. N Y. Andirm Han. Central PrrsidcM. ItMrrnaional Atwriatofl of Heal and Frou Inulaion and Asrues Woflrn. W'ashinfton. 0 C. PURPOSES OF THE INSULATION INDUSTRY HYGIENE RESEARCH PROGRAM 1. To develop improved methods for minimizing caposurc of insu lation workers to dusts and fumes encountered in their wock. 2. To disseminate knowledge of these improved methods of dust control wherever they may be applied advantageously and to offer cooperation, advice and assistance toward their universal adoption. Self-Contained Supplied-Air Respirator Available The removal of old asbestos- last year and manufactured bv the V m containing material continues to N: a Osvupation.il Health and Sulci) I'n. major source of caposure to insulation ducts Division. will ofvratc lor over workers. While rip-out is only done oc four hours and provide protect ion in the casionally. the dust concentrations dur dusliest of. environment-, during re ing this procedure can be so high that moval of asbestos material. The res special respiratory protection must be pirator weighs only lOpoundv There i\ used. Often, asbestos fiber concentra- no resistance to breathing, no conden lions exceed 100 fibers per milliliter. 20 sation of moisture, and face fit is not of times the current standard. particular importance. ' According to the OS HA Asbestos Standard, employees engaged in the Maintenon r hnpnrtonl removal or demolition of pipes, struc The respirator should, however, be tures. or equipment covered or insu checked periodically by personnel lated with asbestos must use type **C" familiar with its operation. Any re continuous flow nr pressure-demand placement parts required should he supplied-air respirators. In addition, Ihosc of the manufac turer, and their in special coveralls, gloves. and~shoe structions for servicing and repair coverings are to be employed to prevent should be followed carefully. contamination of clothing by asbestos Other supplied-air breathing devices fibers. are available in which cylinders of oxy On jobs where externally supplied gen or of compressed air are tarried by air from tanks or compressors is availa the worker. Several approved types ble. a variety of hoods may be obtained exist but they arc more complicated to for connection to the air source. Often, use and more cumbersome than the however, a supply of breathable air is previously described battery-posscrcd not readily available, or the use of a air filtering unit. Moreover, those using long air hose may give rise to safety compressed air have a masimiim use risks. time of only 30 minutes before a new Battery-Powered Unit Available cylinder must be obtained Those using oxygen have a longer operating time, Additionally, if air is supplied by but require chemical filtering of compressors, provisions must be made exhaled air. to remove oil and water milts and to The half-face dust respirators com insure that carbon monoxide does not monly available on job sites ate not get into the system through improper suitable for use during removal of as placement of the air intake. bestos insulation materials. The use of In such circumstances, a battery- such respirators is limited to conditions powered air cleaner and hood have spe in which dust concentrations arc less cial utility. One model, available in the r than ten times the -listing standard. I1 << tf r ft* tact poet of a vrlf-conuinod tupplied-tii A diagram of the Murry park, fan in-i. ad mpirmor h will operate for tow hwn aung a ftliar of We respirator. It weighs 10 p-unds nehv|ufefc Murry. ljf ^faie of Jffltscongin WISCONSIN STATK BOARD OF HEALTH ' industrial myqienk division tati orrici uildiw* MADISON a ygL0g BP1T mm haati Algcaa flyvood ud Yasser tepqr looatiom tifsa, Viasoasis (Rast Is. 1) Ato sf Itadyi fans IS, 1954 Officials Contastodi Hr. 0. B. Bursar, faparlntsndoat Hi, tartarads 6. trios, 1.1., float Hass 1 itody u sads Arab 19, 1954, is this plant with tbs assorption that the sir-boras dost oontalnad lass than 905 frss allloa, resulting la a "Kadis* frss all las dost. "Kadia,*, assorting to Arssbold Lindt Yaluss, vsfsrs to dusts oostalnlng ftroa 55 to 505 frss ailiea. "Lov* is lsss thaa 55 aad *Blgh* is stbt 505* te spselfisally iiUnia tbs frss fllisa sestant of air-boras dust aroaad vsldrook operations, a cross air aaspls m takas sa tha ossssd floor of Hast Bo. 2 la tha rialaity of tbs Tssesar. As gross air aanple reprsssntod a oostimoos ianpling of tha air for 5 boors, at tbs rats of about 20 oobls fast par Bloats. Tbs dust was sollsotod sa a lsyar of Sallcylia sold soys tala aad set to tha V. t. fublis laalth terries for analysis. As rosolt of tbs analysis Is obovB is tibia X. Tabla X flOMPOSIflDl Of itt-BOBB DOIT AT WELUBPCE OFPATIOP frss tilioa 5.15 Asboatoa . 10.55 Kdgst inpingsrt wsrs osad is ooUoetlag atBostfeerla dust topis* for tbs parpoae of dstsmlaiag tbs aiabsr of dust partlalsa la tbs air aroaad rarious opsratloaa os Vsldrook is Hast 2. Biml popyl aloobol was tbs sollaotisc aadloB aad dost rousts wsrs made aslag tbs light-field Bisroseopis toehslqoe. tamer soaditloss axis tad doriag tbs sourss of air stapling, In Aat an apprsoisblo nsnt of Batexal rsatllatioa was proridod tbrangh open windows. ' As moults of tbs dust ODonts pro given in Table XX. 05 -1 - Table S * iT>cawngRie post cicgmunog Seepla *> a MLUieas of Ikrtielea Hr _________IsaatloB and Haerlatlon.CaUa Hat pf Air msr 71001. 1U5 to 2il5 ?.*. 1. B.t. (Rraathinf Seat) ft** Baadar operator. FWed ead. Berth aid*. 42 2, B.Z. An Bonder operator. Fnd aad. oath site. 1.7 3. B.Z. Bandar operator. Food ead. Baft aide* 4.3 4. 0.1. (Oaaaial Itaoipfcere) ID1 free food oad of drai aarder. 2.1 5. B.Z. Baa Baador oparater. Off-baarlaf oad. Barth side 3.6 4. l.Z, Drm Bandar operator. Off-koarlnf oad. Beat aIda. 6.5 7. B.Z. &ra Baadar operator. Off-heeriaf id. Berth aide. 0.1 1. 0.4. SO* brtfaMt f tali iu4r* KCT THOU, i.ec to 4.0C Ml. 2.7 . B.Z. Btnlght line rip oav. Food oad. ID. * Off-heerlaf oad. n. B.l. fhautr. Off-hearla* end. 32. B.Z. TOaoaer. Off-heerlaf oad. 13. B.S. TaBDaar. Faad oad. 14 B.Z. foaoaar. Food oad. 15. 0.1. Sad of iroee oooqplod ty Taaoaor 16. 0.1. a : .* 1.7 2.0 1.6 3.6 5.3 2.5 '' 2.0 0.6 9 * Trm tlM nnlte of tho inl^li of {nil air saapls (Tahls I), it u daeldsd to m 20 aillAon partlslos Mr Uo fbot of air aa tho X.A.C. (Ifcadaua Allovahla Coaaantratlca) fbr tho air barm dust la tha rielcity of waldrook oparatlons. This ralno la tha las as tha nloo that Ml astoaod la tha Marsh, 1996 study, fits lafomation aa a jrorloos analysis aad* on hlo dost la tha aollaetor systaa. Trcm tha fm alliaa oontant standpoint, 1% is ossa that tha 5*99 rains Is oa tha eonsarvatlro and of tha 39 to fO% trm allloa aoBtaat rang* asslgmd to aMsdlm* slllaa dost*. Xa othar words, tha >fcdita aad aHigha rangaa ara vary broad (59 to 509 aad 509 to 1009 raapastiraly) This a dust postal nipt 505 trm silioa would still bo dlassod as a "Madina* alliaa dust, tha saas as a dust oontalnlag 5.39 trm alliaa* It 8tands to raasoa, tnmr, that la oqual aoDaaatratloos tha 5*39 fraa alliaa dust would prwsant lass of a haalth haaard than tha 309 trm slllaa dust, toh&ltally, a 1.79 fin* slllaa dust would bars as X.l.C. of 50 a.p.p.a.f. (50 ailllon partlslos par auMo foot of air) although pfcyslologiaally tfaars would probably bo no diffarwaao batwaan 4,79 aad 5*39. Us would oonsarrmtlvaly giro tha 4.79 trm allloa dust an X.A.6. of 20 a.p.p.a.f., slnoo thosa rups era not traatad as sharp llass of distinetion. By tha aaaa totes, tha XA.C. nlta fOr asbastos hist is 5 a.p.p.a.f. 9hs analysis shows 10.39 asbastos In tha alr-bona dust, in K.A.C. walus of 20 a.p.p.a.f. Is again an tha oonssrratlrs fids. Tba atnospbarla dust oonosntratleas Ustad in Tabls ZZ, rang* frcai a high of 8.1 a.p.p.a.f. to a low of 0.6 a.p.p.a.f., and ara all andar tha M.A.C. ralua of 20 a.p.p.a.f. Zt should bo raamharsd, boworwr. that this study was aads ondar soaaar aondltioas. Vhon natural rsatilatlon is at a llnlaia, an oaaaslonal eparatioa will toad to jrodnaa absotpharls dust aonoeatratloas whioh ara abort tha 20 a.p.p.a.f. tlrsshold Halt (&aa Marsh, 1956 ato^y). LOCAL KPAtTST PTrtUTIPW fISTPfi laah aaohlna aptrating oa waldrook Is aqulppsd with loaal sshaust vaatllatloB hoods of rarylng daalgn. Thais hoods appsar to ba doing a satiafao- lory job. Zt should ba raasabarad, bowrtr, that aa ashauat oystaa having a bay aollaotor bavaai Last offlPlsat as tha aOllaotad aatarlal in tha bag offara aora and aora raslstanaa to air flow into tha bead. Thus, mhlaaa tha bag ohllsstors ara autmatlaally alaanad or arappada, thay should bo oloaaod boforo air flow is apprseiably dialTil shod. . ... Zn obosrrlng tho psrforaanos of tha stahaust hoods, It was fslt that fci^ ateoipterle duat aoDoantratlono around an apsratlon would in aost oasas not ba as au a rsflaetloa open tha oshaust hood as upon tha aatarlal hanil log bafora aad aftar proaaialag. filing of finishad panals oa hand trunks and othar slnllar oparatlons appsarsd to ba as auoh, If not aora, of a dust sourpo than tho astual oasdlng or saving. - .. 4 ggoMPamog tti fbllovlaf rMooiBUtlm arc udi as the lull af aonditiara dtia| d&rlsf tba lbrah sad Ana 1956 atudloa. ' 1.) Zt is rawer andail that tba local aoba&at 171UBI ba aalatalaad la aoeb a aaaaar that aaxferas officiant la faellaad* Zt la fait that the lotf ataocpharle doat aosoofitratloai safer antr aoaiitloacj aad fairly lav dual sooMBtratloBC safer viator aoadltloaa ara daa priaarllp to tba local aofeuat qrttoi. I.) Joaa aoaaiferatioa abeald ba given to tba hand*! lag of tba vald- iek ptsalii aa vail aa scrap banning aad fvwjfeli to teep tba dot dlaperoioa at a sialaaa. IKESTRIiL ETCZSB KTISIDI 170i da 10Ao/56 Sfeard ft Otterooa ZcLuJ--/ -if-iriLs Ullia 1. Ut, Ji.B. OLreotor & "