Document 37mb9brL4m139zKb6MKe31ZbO

' i /-.DU :- * tAL CO*';ION OF OHIO - ?'*'* *'i;N or SAC.KT.V. HhYyGgIiEeNnEe^; ' ti.rvr .ANC .0*6TP? CT .OFFICE PHONE (216) 6 22'3655 f TIMOTHY FIORILLI INDUSTRIAL HYGIENIST F3ANK J. LAUSCHE BLDG. 615 WEST SUPERIOR AVE. CLEVELAND. OHIO 44113 ` The Industrial Commission OfOhlo Division Ot Safety & Hygiene 246 N. High St, Col.. 0.43215 June 21, 1984 il ' (j t r uu - \ l*))r >6 :CAA'1^ >:i h;.' y ii - .r'Vi. ' . Mr. Roger Smith, Laboratory Director Eaton Corporation, Air Flex Plant 9919 Clinton Road: Cleveland, Ohio 44144 Dear Mr. Smith: I On May 10, 1984, an industrial hygiene ^investigation was conducted as a result of your request made-: on April 27 , 1984. Airborpe asbestos* levels were evaluated,:ih the;'testing lab where iipprbk'i'mately four employees work. t," \ \j Air monitoring was conduct^diby'`using - personal sampling pumps attached with 0.8 micrometer pcuretlaize'Wiixed cellulose ester filters. The pumps were calibrated be.fore^their use and the calibration was checked after their use. The filters'"!Were used with the cassettes open face. Analysis was done by.,an-Jindustria1 hygiene accredited laboratory. Filters were analyzed,by phase^contrast microscopy and bulks by polarized lighfe,,dispersion staining microscopy. On this date in the 300-.h6rsepower dynamometer room, a press brake was operating-^.with/a !9CS brake containing Fenner 333 friction material and a CB^I-UtchYqp*ntaining NF 125 friction material. Both friction material^ contain asbestos. The press brake was operating at 80 cycles per-minute,. ,,The dynamometer was operating but did not have any asbestpsfcpntaining friction materials, j On one end of the room there was a\WindQ.v `exhaust fan operating and oh the other end there was an opdn window.* The weather on this day was sunny, 60 F, with little dr ho wind. . airborne asbestos sample was .taken at a five-foot height approximately four feet from the press brake. The sample result was below mandatory arid recommended limits as shown in the table. v % 1 ` ;' . ' An!-"area and two personal samples were taken in the main laboratory room. Air was being circulated around this room by an air dbyer and for part of the day by open windows. Because of the warmth of the day, the space heaters were operating little, if any, of the day. Approximately a week prior to the date of this investigation 'thirty pieces of 33VG asbestos-containing friction material were milled. The operator used two shop vacuums to locally ventilate the milling machine. Only one ot the shop vacuums was equipped with a SCF-EC-2700 FAW 11872 Eaton Corporation, Air Flex Plant Page -2- '.V MV- ' ' .' .V ,\ V -V IV-; . VV, r VMM filter for use with asbestos-containing particulates. For the latter half of the four-hour sampling, several pieces of asbestos-containing . friction material were cut, ground, and sanded on machines that are locally exhausted. All air monitoring sample results (see table) are v ; below current mandatory and recommended limits. i;, An area sample was taken around the dust collector used;ftb i/V capture particulates produced while machining friction material.MThe dust collector was running but there was no friction material being machined. This sample result also was below current mandatory and recommended limits (see table). 1 V fM ^ Threshold Limit Values refer to airborne concentrations of substances and represent conditions under which, -it. isrbeljLeved that nearly all workers may be repeatedly exposed 6a^'%ftekjiy without adverse effect. Because of wide variations injindi^i^ual susceptibility, however, a small percentage" of workers may experience discomfort from some substances at concerjtratipns^at or below the threshold limit; a smaller percentage may-be .affected more seriously by aggravation of a pre-existing condition or\by'development of an occupational illness. . M, V Y . c-'. !- A bulk sample of mill shaviriigslof 33VC' friction material was analyzed and found to contain 10% chrysbtile asbestos. A bulk sample of particulates on the millinpVmachine,*used to mill .33VC friction material the week before thi&Vsurvey,-':was analyzed and found not to contain asbestos. Cellulose^-fibers and metal shavings were found. A bulk sample of particulates on a overhead light fixture which had not been cleaned for some time was, anal/zed and found not to contain asbestos. Cellulose f ibers,ajhd dust were found. i' > : . 5! , Asbestos fibers-'find, entry into the body by inhalation and ingestion. The fibers are, retained in the body tissues throughout the lifetime of theVhost, even.long after cessation of exposure. Fibers may migrate to otherr organs following retention in the lung. Asbestos is ^ndv cefr.fe4in^malignancies are related to exposure to fibers of the asbestos minerals. - '1 -> ' i !' AsbejStosisV,is a progressive restrictive pulmonary fibrosis assobiafebdWih- inhalation of asbestos fibers. Malignancies related to tHsV inhalation and possibly ingestion of asbestos fibers by epidemiolpgical studies include carcinomas ot the lung, mesotheliomas of the pleura and peritoneum, and neoplasms of other sites /*A%Bestos has a synergistic effect with cigarette Smoking in pr.odtiding carcinoma of the lung. Asbestos workers who are smokers have over 90 times the risk of non-exposed non-smokers of contracting lung cancer. FAW 11873 Eaton Corporation, Air Flex Plant Page -3- i It is imperative that all operations that involve cutting,' milling, and sanding of materials that contain asbestos be locally ventilated. The dust collector used must be designed for collection .1 ^ of asbestos fibers. Any shop vacuum should not be used tor loCa1i zea 1/ ventilation and especially one not equipped with a filter designed iofrV's asbestos fiber collection. A collector not approved for Coliebtipn'ot asbestos fibers may actually make matters worse since the-sf ibera-may pass through the filters and spread asbestos fibers over//larger\ area. Exhaust ventilation must comply with ANSI 29.2-197'l:. While the present OSHA standard, 29 CFR 1910.1.0Q1, .limits workers' asbestos- exposure to two fibers greater thlip" f i,Ve`rtilcrometers in length per cubic centimeter (fibers >5 /cc) , mahy heyith experts believe that there may not be a safe level for.Carcinogen1 exposure. OSHA has proposed a new asbestos standard that^lhay , iotfei the Permissible Exposure Limit down to 0.2 fibers' >`5 , /cCi , 1 ' .?*>%. %. % For the asbestos levels found on monitoring, additional workerj protection may be af flooded,-vbyfjjsing a reusable or single-use air purifying respirator. 3 Engineering controls should be.usediwhpnever feasible to maintain airborne contaminant concentrations*below' the. recommended standards. Compliance with the permissibly exposure -limits by the use of respirators is only permitted^^il3?^i-ted engineering controls are being installed or tested, wheh norKirbutine maintenance or repair is being accomplished, or during1 emergencies. The reasons that respirators can only be used as-In interim control are: (1) So many factors affect obtaining a proper fit. For example beards, sideburns, eyeglasses, the absence of ;4e1n,^iires, etc., prevent a proper face seal and thus completely ^negate-ia jrespirator's usefulness. (2) Respirators can cause wearer d_is%6mf ort.' (3) Respirators cause resistance to breathing. Al'S" ' "" When properly selected, used, and maintained, respirators can also provide added*protection for workers who are exposed to contaminants*beldw a'standard. Although their use is not mandated by law in subh- dases/;'prudent Industrial Hygiene practice supports the need |of^thei&"use regardless of the level of contaminant present. That4psition\i-s Abased on the fact that no known safe level of expostirfe ex,isjfs for exposure to a carcinogen. Consequently, when working with'any known or suspected cancer causing agent, all precautions to include the use of a proper respirator should be implemented. Publications are available from the National Institute for Cfdb'dpational s'afety and Health (NIOSH) which are routinely updated, listing tjhose respirators certified by NIOSH ana their uses. .v L - Whenever respirators are used in a plant, the Occupational Safety `end Health Administration (OSHA) requirements include a written FAW 11874 < Cl c 4;V vyv; ,v i C/:CvC<=t , te.ci v;v ' f ' i; : ,c CC'';-f: ::c .I;,' &>vCwv Cv:;:; ;|iaCCCCC:CICv' Eaton Corporation, Air Flex Plant Page -4- /', . /.' C V. . I V V! respirator program, qualitative and/or quantitative fit. tests, and a physician's statement on whether or not the worker is physically fit to wear the respirator while performing the designated work 1 assignment. The complete specific legal requirements, for he _ t selection, use, and maintenance of respirators as. wei 1 -as gudaelineV Iif for establishing a respirator program are outlined in,'OSHA' s/General' J Industry Standards 29 CFR Part 1910.134 and 3.0 CFR 11 which'/'" incorporates the American National standard Practices fo.r^Re"spiralory protection in the ANSI Standard Z88.2-1980. VI _ ,, ; ' :: <WS;: .. ' '5. : sincerely, % TJF/rl \ ! ; ': I Timothy J , Fior iLl.i industrial Hygienist .. cir ' . vV'-.-a- ,,CaC.siC C/` . 'V : ' - '"'Vi: V-'" V'... fy-' %s* t Cl vS;' . V cV;Cr ,, <*V', ' =- ! > ci> vav<r FAW 11875