Document 4JJ2rBRRkKz5MyBV87B70w1Bj

un rmssmat vans t-o-io AMidask ft*root loo I. J. Hlaroty, Mtr* kst Plttaburgb 2' himil ak, 19T3 ' toaalta of Air saiga* &bao for Airbero*^ Aibtatoa mf li 3 Saatioa 1-5# UtA,r Mat Plttaborab wftrjai :c: S.Pgh. 2-CJ - UlA Plan? layout - C. S. Waltz, Supvr. iBtrodttrtloo 'rH rpz) At _ air foallty avrfay for 1*$ ahlab ara lavolvad with offlcat Baadqiartart laduotrial Syglaaa baa aada aai: fibar o*a*H*tlaa at opatatlac atatiooa la Sard abaat, b-kklklAI, or aabootoa ^abat mi Six a tha ti^tk o^ttla tiara balor fit* fibar* Qnosar tba* fit* ttla la tba thraaboM Ualt mlaa art by aaA aaalth Aat) for aootlaaaw nn^ailni wwp. tn of tla l# tlr of air bjra atatlatlaaHy ttlllas mlaa aboaa vhltb aa aortor tball ba nnnarttii4 to tba mm Mntl Xasolatioo* Of tha aix atwaptabla Latala, tao ara vltbla a ftator of ona-Half t par autola oartlMtar ablob abal? >aai tha Tba attaobad tabla sir** a atrarry of all aaaglaa mm tu ablab ara at tba tola* of two fibaya". Ualt oa July 1, L iSSJ It la oar oploioa tbat tba blab rryoaur* iorias tba oiral* mm oparatloa jrssji { T6f0b90) ooald bo br*o#t boloa paralaalbla Irvala by ioaarias tba ^ toot doa* orar tba mm bias*. It alii alao ba uatiaaary to radaattan tba paab gata Sanaa abiab la aaad to paab tba nt plaaaa tbroasb a*4 past tba Ala abaos* baa alraady booa ilaaaaaat lafraaolly vitb yo*. C=* & I. J. Hlavety April 2U, Mr. J. Powers, Fnransn of Ssetion J-5, has daeerlbed, Also lnforaally, * nodifleation for the disc tender (operational shop ardor 9090590) which we j believe *111 substantially reduce the axpoeuze there. this aodifloetion ba* subsequently been installed. Several soaoo work practices were observed which should be r+ry tr __ discouraged. They all involve personal aad work station clen-up habits wh`chf~7 tend to emus* vary high local cone#ntratIona of airborne asbestos la the v^rc breathing tone. Probably the uo*t hazardous practice ia the uae of the bice-djcrpTi gw for paraoaal aad general tree cleaning; also included ia brushing of cl vlth tba hands, shaking out aprons, and sisdlar activities. Vorfcs Engineeringshould ba requested to daal^ seomss clean-up stations, Haller to tba brush rjC>2 attaofaaaot far tba eosaon tank-type household vecuw eleaner, to be attached tha loaal exhaust syaten currently in use. Although no inalnsnt baaard was indicated by tha reaulta of tbs ast teata on nllllng or slotting oparationa (shop ordara 819135 aad 81K035), of large nuisance particulates azs ejected past the exhaust hoods aad on to ti operator. this aggravates tha clean-up problaa santloaad above and co*dd at causa a health baaard. Therefore, va rsm:--nrt, that tha capture hoed daaiga on this aaehine ba re-evaluated by v.- *ks Engineering la light of tha type of wort being dona. Ia expectation of tha 1976 standard Frisian* tha band mm (shop order PB99663H) exhuart vaatllatian hood should also ba jjgrovsd. This can ba v singly by closing the gaps under tha mm table am inside the mm through which tha axhaust is dzaare. Headquarters Industrial Hygiene should ba working vlth '** BMglnsari on all deeii change before iaatallatlon is started. He hope that this survey has answered tha nsads of your initial request Ha would waleoas tha opportunity tc further discuss or elaborate on any of vie^j ,ti or ions ve have as 4a. John f. Industrial nstus or ah awtib takh u stcnoi *-; law* aonran aimmsub diyibicb, iabt raibswaa vamcs _________ WnajQ TB MMWBB or MUCH AMD AfBlL tetei *396 kkoi kkce Uoj AtOfc kkcn kkoe Operation 1 Mtarial inter Shop Qrter tater Coluan tater of Location Eats Mailed Dotation of Maple (niartns) Result* Fibers par Cubic Oentlaatcr Standard deviation (l~) Fibers par Cubic Centluster mill** UUUUC 8IFI85 5CW 3-5-73 70.- 0.6 * 0.2 9ebirrla uuux 6OB0OO taw 3-5-73 71.- 0.1 * 0.1 Blottlac UDhlAK eipaiaj t$* 3-12-T3 60.- 1.9 a o.t ClmUr Baa UlALWC 78FCA90 sow 3-12-73 63.- 17 -- / a 2.- J14 9m t2?51AA KB99&3n 5SW 3-20-73 1 0.6 a 0.1 --- *2251AA P*99063P1 saw 3-20-73 t3.- 1.1 a 0.? pete mllla* UlAlAX 60FO590 taw t-t-73 70.- 0.6 ' * C.l Mm Mater WlAlAJC 80P0390 tsw ^-6-73 t5.- 12.- a 1.-