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FILE NAME: Garlock (GAR) DATE: 0000 DOC#: GAR044 DOCUMENT DESCRIPTION: Government Report r rr <U v/ G 0 FIGURE 6 STORAGE OF GASKETS IN OPEN BINS n c r; c r c c c L' i i. 13 14 HAND PUNCHING Bolt holes in gaskets are often made wLt.h-T/uMp foij a,' hand punch and mallet (Figure 7). This operation conducted without controls produced a dust eve!' .of , 3.00 fibers/cc (single sample). The introduction' of good housekeeping techniques, including the use of a PORTVAC, lowered the airborne asbestos fiber level to 0.07 fibers/cc. This value is less than the point of initiation of medical monitoring (0.1 fibers/cc). TABLE II Airborne Asbestos Levels During Hand Punching Operation Hand punching Controls None Breathing /one Dust Concentration (fibers/cc) Range Ave. 3.00 v 3.00 No. of Samples 1 Hand punching Housekeeping ^0.05 - 0.15 0.07 6 15 I c rI. 11 FIGURE 7 p MANUFACTURE OF GASKETS BY HAND PUNCHING t n c 0 C 0 i: / L l 1 { ---i-i --=' -r- .V `r;' -'C |PpW^-> -. -.bMtf i S ' . : ; " \;i.P ? 'V:'' '' ,V SECTION III HAND OPERATED MECHANICAL PUNCHING -V.-. v: ' - ' - . I..u?,-''-- '> T*r -.'V.'iVfi' r - v~i "*:P ... < v ; : : -:. .... .. ... ,. ,, ,r % :. '' .>..p : , ' -*M0 .V.... > ( 17 ,;-Vv. - 'V y :?; filter-* J , ' * -., * - ' ' v \i '-v' 7. v: ';kr , HAND OPERATED MECHANICAL PUNCHING Gasket bolt holes may be made using a hand operated machine such as shown in Figure 8. Thig. jptraftion - produces less than 0.05 fibers/cc which is less *' than the lower limit for medical monitoring. . r ' (0.1 fibers/cc). : TABLE III Airborne Asbestos Levels During Hand Operated Mechanical Punching Operation Controls Hand operated mechanical punching None Breathing Zone Dust Concentration (fibers/cc) Range Ave. -0.05 <0.05 No. of . Samples 8 \ ( 18 f<1 )n C V/ t.' t** * 1] FIGURE 8 fi A HAND OPERATED MECHANICAL PUNCH USED FOR G GASKET MANUFACTURE. `THE HANDLE IN.THE UPPER RIGHT IS DEPRESSED TO MAKE BOLT r HOLES IN THE GASKET. SCRAP MATERIAL FALLS INTO THE CONTAINER BELOW THE PUNCHING SURFACE. G 19 i ll V SECTION IV MACHINE PUNCHING * :;. I;:\V -V ^ .w '*-. \ MACHINE PUNCHING Production manufacture of gaskets is often done on punch presses similar to those shown in Fijgqt^S f"9;and 10. With no controls on the operation a single ample was collected which showed 5.00 fibers/cc. .Upon ' initiation of the use of high- efficiency filtered -Vacuum cleaners (Portvacs) to thoroughly clean the work area, and the use of covered storage areas, the airborne asbestos levels were lowered to 0.19 fibers/cc. The addition of local exhaust ventilation on the press lowered the levels to <0.05 fibers/cc. Airborne asbestos concentrations in uncontrolled machine gasket punching was over the maximum 8 hour allowable exposure limit of 2.0 fibers/cc; however,'the results are based on a single sample. Addition of good house keeping techniques alone lowered the air concentrations . to 0.19 fibers/cc which is below the proposed exposure limit of 0.5 fibers/cc. Good housekeeping and local exhaust.ventilation lowered the levels below 0.05 fibers/cc which is below-0.1 fibers/cc, the point at which medical surveillance begins. TABLE IV Airborne Asbestos Levels During Machine Gasket Punching Operation Machine i-i'punching Controls . None Breathing Zone Dust Concentration (fibers/cc) Range . Ave. 5.00 5.00 No. of Samplest 1 Machine punching Housekeeping <0.03 - 0.7 0.19 12 Machine punching___. Housekeeping <0.05 - 0.06 and Ventilation 0.05 8 21 FIGURE 9 UNVENTILATED MACHINE FOR PUNCHING GASKETS r ' iri*ft:>-/*v . < * </* * r~ l. r FIGURE 10 r VENTILATED (RIGHT) AND UNVENTILATED.(LEFT) MACHINES FOR GASKET PUNCHING. THE PORTVAC i: ON THE EXTREME LEFT IS USED TO VENTILATE r THE PRESS.. n c n c i i I ' .s .. " .<;..%/-*;!,:. / .. '.r '` ::'V-..:`.r' y : ' r. >w; . r: si. SECTION V HAND SHAPING I 0.7 n r- '*~kr> 'Vv f .f}: v.f: ;S - H'Wvi W-'r" "V-L. ., ** ?> i ;" '-* ^ v > ` '"v-- '.i . .>-1 '. - .vS',' : v -* '7 --"v f' Y -*' '; ( "V 24 ' *<* V * ? ' ' /.* - .> 'll > .s- ;v ' *Vj - .r^ *" i-Vv.' t HAND SHAPING Hand shaping of gaskets is carried out by scribe, pocket knife or scissors. Gasket sizes g.r^ &drfib;ed onto a flat sheet of asbestos gasket material and' then cut by use of scissors or pocket knife... (Bolt holes are produced by hand punching (Figure /)'. Airborne asbestos fiber concentrations ranged from < 0.03 to 0,3 fibers > 5 micron/cc air with an average value of 0.13 (Table V). These values are considerably less than the current standard of 2.0 fibers/cc of air, and the proposed Department of Labor standards. TABLE V Airborne Asbestos Levels During Hand Shaping Operation Hand shaping Controls None Breathing Zone Bust Concentration (fibers>5 micron/ cc air)________________________ Range Ave. <0.03 - 0.3 0.13 No of Samples 10 U. '^r;'::R'>f' ;r-^-^".7:V;r:''--' . -Viv',-^-':-.":.--?.':v`-:' -. >v` V. * T .-y :.-y :''. ' ^ : ' = ' ' ..-> -J i -5`,' jy ^ a iV rf*-' ~ -v .}'- > r,V ^ - - ?./)" " . -v-> v v v - t . w . v - -k ^ . ; v .- f 26 MACHINE SHEARING Many larger gaskets, such as those used for boiler door casings, are cut to approximate si_^eCjbJy (najchipe shearing (Figure 11). Evaluation of this operation with no controls showed 0.9 fibers/cc. Theuse of . PORTVACS and other good housekeeping techniques lowered this level to 0.07 fibers/cc, a value con siderably below the current standard and the point at which medical monitoring begins. Table VI Airborne Asbestos Levels During Machine Shearing Operation Controls Machine shearing gasket material None Breathing Zone Dust C o n c e n t r a t i o n " (.fibers/cc) Range Ave. 0.5-1.3 0.9 No . of Samples 2 Machine shearing gasket material House- 0.05-0.15 keeping 0.07 6 ) 27 [; f: r. , c G 0 r . ': ' r i. ; r c L 1 . j l _. . FIGURE 12 MACHINE NIBBLING GASKET MATERIAL ' . : - ; .=* ( \ r p p [ 0 c G i C c . c r (. - L FIGURE 11 MACHINE SHEARING GASKET MATERIAL ' ` ' . 28 '\V : `V T-V ;//'\-i'\v;"-.\ fV^4$i*'?* /?:;' *<:', -:;^i--: >\ ..:; *'';:'/}:^f:,'4yT'^-ri^' ~~'":;`-; 'C ^v.i;;;;: :.'S.-r> - >\: 'v -^''.-V'..*-/'-'':;.f - JT.."^>V-.?:.'''v :i\.' < ^-. .ViV-r . ---V-. ;: -i -W.. 29 r I . j ^ f | ( f r: (: r r; i r ( i V l V MACHINE NIBBLING Gasket material may be cut to shape on a nibbler such as is shown in Figure 12. The results in .TSb'l.'efVII. show 0.26 fibers/cc before controls and *0.42' `fib4rs/cc with the use of PORTVACS and other good housekeeping techniques; The apparent increase in airborne fibffr concentration due to good housekeeping techniques may be due to the short sample length (8 minutes) in the pre-control samples. Average values, however, are below the current standard of 2.0 fibers/cc and the proposed Department of Labor level of 0,5 fihers/cc, Table VII Airborne Asbestos Levels During Machine Nibbling Operation Control Machine nibbling None Breathing Zone Oust Concentration (fibers/cc) Range <0.08-0.46 Ave Z 0.26 No. of Samples 2 Machine nibbling Housekeeping 0.08-0.8 0.42 8 ' - ,-;i V- - 3 ;-':':>":4 ! y '> . . ' \ :: S'1; Y -' : . :v -' f jwfv , >.> 32 '-- W ? *. :^' ---* :y -'/iff&r .' S.-. .".. ..\ : ' "' ' *7 1'.' .>'.;4sttuv.- . w. INSTALLATION Samples collected during installation of gaskets showed less than 0.03 fibers/cc. This value w^is.^ddiT^lstently obtained in all samples and is considerably less'than the point at which medical monitoring begio.sr Figure 13 shows an installed gasket. ^ Table VIII Airborne Asbestos Levels During Installation Operation Installation Controls None Breathing Zone Dust Concentration (fibers/cc) Range Ave. <0.03 < 0.03 No. of Samples 4 33 i ; 1 i . r FIGURE 13 i.i AN INSTALLED GASKET n u 0 [] [ C ' L 34 r ' 35 REMOVAL AND CONCURRENT INSTALLATION Many circumstances dictate concurrent gasket removal and installation with little or no cleaq^ujl ifc-etween operations. Under these conditions gaskets are simply removed and new gaskets installed. An, example of this type of operation is replacement of gasket^ in boiler headers. This procedure was evaluated under basic housekeeping controls and results showed an airborne fiber concentration range of 0.02-0.30 with an average concentration of 0.09 fibers >5 micron/cc air (Table IX). These results are considerably below current and proposed standards as well as the starting point for medical surveillance. Table IX Airborne Asbestos Level During .Concurrent Gasket Removal and Installation Operation Removal and'concurrent installation Control Housekeeping Breathing Zone Dust- Concentration (fibers/cb air)_______________________ Range Ave. 0.02-0.30 0.09 No of Sa pies 28 36 ''" " -.^^ ' T 'J?.'C ' ' -i.- .'A.i-1/. .-;*- ; 'i'V>. ./.i ' *Viv'.^'/^i .`V.-S""*-'>-!si*.i'f3.s'trv.'.i<V.i'>rr*c?-'rvr. 1J'#**vV*' -'s;4''h .-^'T:-:: . v*^' ' 37 CLEAN-UP FOLLOWING REMOVAL After removal of gaskets from an object, residual pieces of gasket material may remain attached. Figure 14 shows residual material remaining 'join; a flange. Removal of this residual material can_ be accomplished in a variety of ways. Remote* by.v . means of a hand scraper is commonly used and results in low airborne asbestos fiber concentrations (Table X) even in the absence of control procedures. An average fiber concentration of <0.05 fibers >5 micron/cc air was obtained for this process; considerably below 0.1 fibers/cc (the beginning point for medical monitoring). Table X Airborne Asbestos Levels During Removal of Residual Materials After Gasket Removal Operation Hand Scraping Breathing Zone Dust Controls Concentration (Fibers > 5 micron/cc airy Range. Ave. None <0.05 .<0.05 N o . of S amples 4 38 v/: n !:t *'; 't * *j/ FIGURE 14 FLANGE AFTER GASKET REMOVAL AND .BEFORE REMOVAL OF RESIDUAL GASKET MATERIAL L ! 39 40 I r r r i r n I: r r L i i REMOVAL WITH SIMULTANEOUS CLEAN-UP Under numerous circumstances gaskets are removed from materials with subsequent immediate cle^p^&pj,' (Removal is accomplished by a variety of methods but commonly by use of a hand scraper. Final clean-up of- he ' im material is generally accomplished by use of hair# scraper or by wire brushing. The operation of gasket removal and subsequent immediate clean-up by hand scraping was sampled and showed an average airborne fiber concentration of 0.13 fibers/cc of air (Table XI). When this operation was carried out by wire brushing an average fiber concentration of 0.11 fibers/cc of air was obtained. These average fiber concentrations are considerably below the.current standard of 2.0 fibers/cc and the Department of Labor proposed level of 0.5 fibers/cc. Table XI Airborne Asbestos. Levels During Gasket Removal and Simultaneous Clean-Up Operation - Controls Removal and None hand scraping Breathing Zone Dust Concentration (fibers >5 micron/cc air) Range Ave. 0.06-0.39 0.13 No. of Samples 14 Removal and Housewire brushing keep ing 0.03-0.18 0.11 8 r t / . i. 41 I 1 ;:}' [oDfl .' '- '.r-. ` - , ' J '. : ' V,'*''f >/' <' '. SECTION XII . / . --V . S'X- '-..-ce -* V. -1-y ' : ' ''>>*< ?-: f i s g ^ . ; ; # r : > : - . it-*- i l 5 'V" a. - r*?-...' ; ' : \ * p v - u . i*;?*-: >yV/V-<'-" .- ir - ' % - ---*;. <-~v . i % : i ' ' ' ; 1 V sA> / - f ,sV . .-X-Ji.?&/ 1. -A'.'.i'.*. . .* :. I. fwr_--- V,-. - #< ;;vf^.^-^yvvv,V-; >v- r :,;' a - 'O * ' . S.-rs*- '^:ivfj -2>. i>-.*^V*-,r-.\ 42 a. c MISCELLANEOUS AND MULTIPLE OPERATIONS Data from multiple and miscellaneous operations were provided by Naval Regional Medical Center \'Db*llan^.`. No controls were used on any of these operations, and little direct comparison with data coll^oted'by NRMC Bremerton is possible. These results are > ithin the same general range as other collected ata. Appendix I, Section XII is a complete listing of the data. A3 SUMMARY Analysis of data collected in all phases of the life cycle of asbestos gasket materials showj^ j iAjmljejr of interesting relationships. In general, average .flfber concentrations obtained are well below the current. : exposure standards of 2.0 fibers/cc, the proposed'"* Department of Labor level of 0.5 fibers/cc, and 0.1 fibers/cc which is the point at which reference (j) states medical monitoring will begin .* (Table XII). In many operations control procedures were initiated several years ago} consequently, data for uncontrolled situations are scant. However, some data were collected,with values considerably higher than the current acceptable levels. _A prime example of this situation can be seen for machine punching. With no controls a concentration of 5-00 fibers/cc was obtained; with the inception*of basic housekeeping controls this level was reduced to 0.19 fibers/cc; and under local.exhaust ventilation conditions the- concentration was reduced to a level below the point at which medical monitoring begins (0.1 fibers/cc). Fiber concentrations resulting from asbestos containing gaskets during storage in supply areas for issue and receipt, and storage in work areas for use, show no significant statistical difference between means (Table XII). The resultant airborne fiber concentration is very low, 0.02 and 0.04 fibers/cc respectively. These values are considerably below any accepted, proposed-or expected goal levels for asbestos exposure. In essence the manner of storage of asbestos containing gasket material is irrelevant. Gaskets may be stored wrapped, unwrapped, rolled, or flat and levels of airborne dust remain low. Airborne fiber concentrations produced in all phases of hand operations are quite low. Values fluctuate depend ing on whether or not basic housekeeping controls were utilized during the procedure, However, even in the absence of housekeeping controls values were found to be considerably below the current standard of 2.0 fibers/cc, the proposed level of 0.5 fibers/cc, and either comparable to or below the starting point for medical monitoring.I 44 I I Dust concentrations resulting from machine operations tended generally -to be higher when compared with hand operations. However, the resultant values obtained are below the currently accepted level and^ t'h'et'proposed Department of Labor level when housekeeping "qontir'ls are utilized. A comparison of dust concentrations produced by different machines also implies 'utilization of different control procedures. Machine nibbling operations produce significantly higher concentrations of airborne fibers than do machine shearing operations; consequently, more stringent control methods are necessary to reduce the fiber concentrations from nibblers to.level below which operators do not need to be considered asbestos workers for medical monitoring purposes. During gasket removal and clean-up, airborne dust concentrations are considerably less than the currently accepted and proposed levels. There is no significant difference between mean concentrations of fibers produced when hand scraping and wire brushing are compared. Wire brushing by its mechanical action will produc'higher dust concentrations than hand scraping, however, basic housekeeping controls-maintain airborne concentrationsat comparable levels. Table XII depicts results from a number of statistical comparisons between various operations. These comparisons show that. n general there is no significant difference . in the amount of airborne asbestos dust.produced between various operations. Those comparisons that do show a statistical difference primarily involve some phase of gasket manufacturing. 45 TABLE XII COMPARISON OF AIRBORNE ASBESTOS FIBER CONCENTRATION IN ALL EVALUATED PHASES OF GASKET OPERATIONS ; . Operation 1(a) Storage for receipt and 1 issue 1(b) Storage for . use 2(a) Hand punching 2(b) Hand punching 3 , Hand operated mechanical punching 4(a) Machine punching 4(b) Machine punching 4(c) Machine punching 5 Hand shaping 6(a) Machine shearing 6(b) Machine shearing Controls housekeeping Breathing Zone Dust Cone. (ve. No. Fibers>5 a/cc air) - ,0.02 - none 0.04 none housekeeping none none 3.00 0.07 < 0.05 ' / 5.00 housekeeping 0.19 ventilation 0.05 none none - '' 0.13 0.9 housekeeping 0.07 A 6 i Statistical Comparison a.p.q a b ,c 1 b ,d *,o - : d,e ,f ,t r. e * N c ,o ,a ,t .U,v,w ^ g ',x%* f g*b,s I TABLE XII CONT'D Controls Breathing Zone Dust Cone, Ave. No. Fibers>5 u/cc air 7(a) .Machine 'nibbling none 0.26 7(b) Machine' nibbling housekeeping 0.42 8 Installation none .4 0,03 9. Removal and concurrent installation housekeeping 0,09 10 Clean-up none -0.05 11(a) Removal and hand scraping none 0.13 11(b) Removal and wire brushing housekeeping o'. 11 a. no significant difference at p <0.05 by t-test b. no significant difference at p 0.05 by t-test c. no significant difference at p<0.05 by t-test' d. ho significant difference at p 0.05 by t-test; e. no significant difference at p<0.05 by trtest f. no significant difference at p<0.05 by't-test' g. significant difference at*p <.0.05 by t-test h. significant difference at<p <0.05 by.t-test i. no significant difference at p <0.05 by t-test j. ho,significant difference at p<0',.05 by t-teat i 1 k. no significant difference at p<0,05 by trtest ! l. significant difference at p <0.05 by.t-test m. no significant difference at jp <0.'0 by t-test n. no significant difference at p<0,05 by trtest !" o. significant difference at p <0.05 by;t-test p. no significant difference atjp <0,05 by t-test ! ;i . ! * ;46 Cont'd I 'Statistical Comparisons * h,l,r i j >n ,p i k , m ,r ,u k,l,n,v r. I < ' i | i l< q. significant difference at p 0.05 by t-test r. significant difference at 0.05 by t-test s. no significant difference at p 0.05 by t-test t. no significant difference at p 0.05 by t-test u. no significant difference at p 0.05 by t-test v. no significant difference at p 0.05 by t-test .w. no significant difference at p 0.05 by t-test Each identical pair of alphabetical letters were compared to each other. For example, the letter "c" compares the amount of airborne asbestos dust produced during hand punching with housekeeping controls and the amount of airborne asbestos dustproduced during hand shaping, with no controls. A comparison of the mean amount of dust produced by each operation was conducted by using the standard student t-test at the 95% confidence level. Hand punching with housekeeping controls produced an average of 0.07 fibers/cc versus 0.13 fibers/cc for hand shaping with no controls. To determine whether these two means are equal the t-test wasemployed using the 95% confidence level. Through a series of mathmatical computations a calculated t value is derived. This calculated t value is compared with a tabulated t value obtained from published tables of t values; the tabulated t value is the minimum t value with which we can be 95% sure that the means are different. If the calculated t value is greater than or equal to the tabulated t value, then we are 95% sure that the means are different; if the calculated t value is less than the tabulated t value, then the difference between means is not significant at the 95% level. The conclusion that can be drawn from the example using the "c" comparisons is that these two operations produce essentially the'same amount of airborne asbestos dust, i.e. there is no significant difference between mean values at the 95% confidence1^ level. Stated differently, thisindicates that there is no satlstically significant difference i.T between the amount of dust produced by hand punching with housekeeping controls and the amount ~~ of dust produced by hand shaping with no controls. 'v. 46 Cont'd 4 7 WORK PRACTICES AND PROCEDURES FOR ASBESTOS CONTAINING The recommended work practices and procdures are'based on reducing asbestos exposures to gasket wOrjkerns ;to . below 0.1 fibers/cc. The engineering cotitVolfe'*fdr-' ' achieving this goal are feasible and the necessity . for medical surveillance for large numbers of'gasket workers is eliminated. If less stringent goals, such as 0.5 or 2.0 fibers/cc are acceptable, the work practices can be modified accordingly using the Summary Table XII. A. Industrial Hygiene? Control measures are as follows: 1. Storage ` No special storage methods are necessary. ? Storage in impermeable containers in isolated locations is desirable. 2. Hand punching , All areas of gasket manufacture by hand punching shall be thoroughly cleaned with a PORTVAC and all waste shall be sealed in impermeable containers. Dry sweeping is not permitted. 3. Hand operated mechanical punching All areas of hand operated mechanical punching shall be thoroughly cleaned with a PORTVAC and all waste shall be sealed in impermeable containers. Dry sweeping -is not permitted. 4. Machine punching All power operated pres ses us ed fo r gasket manufacture shall be pr ovided with local exha ust ventilation. PORTVACS shall be us ed to th oro ughly clean the area and all w aste shall be seal ed in impermeable containers, Dry sweep ing Is not permitted. 5. Hand shaping All waste shall be sealed in impermeable containers. 6. Machine shearing All areas where machine shearing is done shall be thoroughly cleaned with a PORTVAC. No dry sweeping is allowed. 48 7 Machne nibbling All areas where machine nibbling is done shall be provided with local exhaust ventilation. PORTVACS shall be used to thgxdpfefljl clean the area and all waste shall be sealed'"in impermeable containers. Dry sweeping is " not permitted. - 8. Installation No special controls are necessary. 9. Removal All waste shall be sealed in impermeable containers 10. Flange clean-up following removal All waste shall be sealed in impermeable containers B . Personal Protective Equipment Until local exhaust ventilation sufficient to reduce airborne asbestos levels -to less than 0.1 fibers/cc. is installed, personnel engaged in power operated gasket pressing or nibbling shall wear National Institute of Occupational Health (NIOSH) approved dust respirators, disposable coveralls, head covers, and foot covers. Coveralls shall be sealed at the ankle and wrist and treated as asbestos waste for disposal. C . Waste Disposal All asbestos waste material collected in sealed, impermeable'containers shall be disposed of-by burial under at least two feet of earth at'a suitable sanitary land fill. D . Labeling All asbestos containing gasket materials shall be labled to inform the users of their asbestos content. NOTE: The method of labeling gasket materials adequately so that the content is obvious even during removal is beyond the scope of the project and was not addressed. s> T. V O 50 REFERENCES (a) NIOSH Publication No. 77-169, Revised^P^p^ipinended Asbestos Standards, 1976 ^ 'j (b) BUMED Washington, DC 081625Z, Feb 1978 : (c) COMNAVSEASYSCOM Washington, DC 061928Z, Feb 1978 (d) NAVSEA S9086-VH-STM-000 Chapter 635, Thermal Insulation (e) NIOSH Publication 77-173, Occupational Exposure Sampling (f) Sec 6101E 1AW 620 SEA-04H Ser 214 Subj: Portable Vacuum Cleaners (PORTVACS) for Asbestos, ' dated 13 Jan 1978 (g) BUMED Instruction 6260.14, Asbestos; measures for control of, Jun 1973 (h) OPNAV Instruction. 6260.1*.Control of Asbestos Exposure to Naval Personnel and Environs, Apr-t1974 (i) FR, Vol 40,. No. 197, Page 47652;- Occupational Exposure to Asbestos : (j) NAVENVIRHLTHCEN ltr Ser 8-152, of 7 Apr 1978 51 SAMPLING PROCEDURE SHEET / .j SUBSTANCE: Asbestos SAMPLING EQUIPMENT AND PROCEDURE A personal sampling pump is used to pull air through*a 37 into 4-piece (2 rings) filter holder. The contaminant is collected on a 0.8 micrometer pore size mixed cellulose ester filter (37 mm in diameter). The filter holder is held together by tape or a shrinking band. A piece of flexible tubing connects the filter holder to the pump. Sample, at a flow rate of 1.5-2 liters per minute with the face cap removed and filter facing down. After sampling, replace the face cap. Number the samples as per laboratory log. SAMPLE SIZE: Sampling periods of between 5 minutes and up to 4 hours may be necessary. Usually 15-30 minute samples are adequate. BLANK: With each batch of samples submit one filter which is subjected to exactly the same handling-as for the samples .except that no air is. drawn through it. Label it as a blank and enter it into the laboratory log. REFERENCES: a. NIOSH SDS 2.01 3/12/74 b. Sampling and Evaluating Airborne Asbestos Dust, NIOSH/ Jan 73- -- Prepared by L. R. LIUKONEN Industrial Hygienist Approved by: R. R. BECKETT Head, Industrial Hygiene Branch Occupational & Environmental Health Service Naval Regional Medical Center, Bremerton November 1975 52 E n c l o s u r e -(1) U N D MUMC 6260/04 (7-7'" (. ' COL1ACTION ND COUNTING AIRBORNE.ASBESTOSVi'BERS PHASE CONTRAST MICROSCOPY METHOD DATA SHEET____ AIRBORNE ASBESTOS FIBER CONCENTRATION______ DATE: ________ -_____________ ' SAMPLE #: ' SAMPLE LOCATION: '_____________ :______________ ^ i1 AIR SAMPLER FLOW RATE (1iters/rain): _____________ . i 1 ,; ________ ______ TIME ON: ______________ OFF: ________________ NET TIME: _________ (minutes) TOTAL AIR VOLUME: ____________________________(liters) BLANK COUNT AVERAGE: ____________________________ AVERAGE COUNT: _______________________ _____________ COMMENTS: ____________________ ___________________ ______________________ COLLECTED BY: -______________________ COUNTED BY: ______________________ CALCULATIONS: AIRBORNE ASBESTOS CONCENTRATION^ (Average Fitter Count) (FiIter Area) = '{Average Fiber Count) 182.3 (Field Area)(Sample Volume)(1000) " samp1e~Vol ume 2 F i l t e r A r e a 37 mm Filter = 855 mm F i e l d A r e a = 0 . 0 0 4 6 9 mm2 53 E n c l o s u r e (2) ASBESTOS COUNTING PROCEDURES INTRODUCTION: . St P.'T :< This method describes the sampling of airbornfe asbeis os'.-fibers, the filter mounting procedure, and counting of the fibers on ,.* the filter by phase contrast microscopy. This procedure rfs ` written for use with the Zeiss standard RA microscope. SAMPLE COLLECTION: Asbestos samples are collected in accordance with procedures described in Section C.3. using personal sampling pumps calibrated according to procedure A.2. Data regarding sample collection is recorded on Form D5. SAMPLE MOUNTING: _ A mounting solution is prepared which consists of a mixture in a one-to-one ratio by volume of dimethyl pthalate and diethyl oxalate and 0.002 gram of clean filter material per ml of solution. The solution is stirred until the filter material is dissolved and a -homogeneous mixture is obtained. The normal shelf life of the mounting solution is about 6 months-after which -time fiber shaped___ crystals may begin to form and the mounting solution must be discarded. With a glass rod place a small amount of the mounting solution onto the center of a 1 x 3" glass slide, being careful not to touch the slide with the rod. The correct amount of solution results in._the solution extending only slightly beyond the filter boundary. If more solution is used particle migration may occur. Using a spatula or supplemental glass rod spread the mounting media into a triangular shape the size of which should coincide with the dimension._of the filter wedge. Cut a triangular wedge from the filter using a scalpel or microscissors Using tweezers, grab the filter edge in the area which was sandwiched by the monitor case sections and place the wedge, sample side up, upon the mounting media. Using tweezers, pick up the cover slip and place it on the filter media combination. Press slightly on the cover until it makes contact with the now dissolving filter. Once this contact has been made do not reposition the cover slip. The sample should become transparent after about 15 minutes. If the filter appears cloudy it may be necessary to again press lightly on the cover slip. Discard the sample mount after 5 days if it has not been counted as crystals which appear similar to asbestos fibers may begin to grow at the mounting solution/air interfaces. 54- E n c l o s u r e (3) ASBESTOS COUNTING PROCEDURES (Cont'd) 5. Rotate the objective turret Ph No. 2 (40 X) int^o--ppsitfon and the phase condenser to position 2. This wi'li'7gi^e^400.power with the 10X eyepieces. V IMPORTANT. The phase condenser position roust always correspond to the Ph number of the objective in order to have the proper phase.., contrast conditions. 6. Recheck the rings to ensure they are concentric, and adjust slightly if necessary. 7. Remove the centering telescope and replace the 10X eyepiece. 8. Ensure that the compensating lens is in place and swing out the neutral density filter. This ensures the proper light"Intensity and Kohler illumination conditions. 9. Adjust the width of the binocular bodies so that the field of vision appears as one large field. Note the value of the center disc; then set each eyepiece body to this value. Now the microscope is parfocal with eafih objective. Only slight adjustments will be required for going`from one magnification to the other. 10. The microscope is aligned for phase contrast microscopy at 400 power. Do not make further adjustments to the optical system. Misalignment or out-of-phase conditions will greatly affect asbestos fiber counts.: ... PORTION RETICLE: 1; Place the stage micrometer on the stage of the microscope. 2. Place a dust-free Porton Reticle in one 10X ocular of the microscope (The ocular or eyepiece must be specially designed or modified by the Zeiss representative to accept a reticle. If not, the reticle image will appear out of focus. The microscopist-may carefully push the field stop inside the eyepiece down about 1/8" to 1/4", then place the Porton Reticle beneath it. The reticle can be held in place with a small compression ring. The field stop may have to be adjusted to find the exact focus). 3. Bring the stage micrometer into focus under 400 power phase contrast. 4. Align the left edge of the reticle grid with the left edge of the stage micrometer grid. 54 Cont'd En c l o s u r e ( 3) ASBESTOS COUNTING PROCEDURES (Cont'd) PHASE MICROSCOPY: . .. ... Kohler illumination * ; \... . , * . ; .> ' - `ff? ' 1. Set up the microscope to 100 power with 10X oculars (eye pieces) and the Fh No. 1 phase contrast objective (10X). n 2. Rack the stage to its upper stop. 3. Rack the condenser to its upper stop and set the condenser iris fully open and the phase condenser lens in the "J" position (bright field). 4. Swing the neutral density filter and compensating lens into position. ~ 5. . Set the iris of the illuminator at No. 5 position. 6. Adjust the lamp intensity to 5.5 volts. 7. Rack the condenser down until the leaves o_the illuminator iris (a 13 sided polygon) `are in sharp focus. 8. Center the image of the illuminator iris with the centering screws if required. 9. Fully open the illuminator iris to cover the full field of----- -., the eyepiece. - 10. Do not move the condenser. The microscope is now at Kohler illumination. Phase Contrast Conditions - 1. Set the phase condenser ring to position No. 1. 2. Rotate the objective turret to Ph No.. 1 (10X). This will give 100 power with the 10X eyepieces. 3. Introduce the centering telescope in place of an eyepiece into the viewing tube and focus on the phase annulus and annular diaphragm which appear as light and dark discs. Without the telescope a light and dark ring can be seen. 4. Align the two rings using 2 small adjustable knobs located to the left (a knurled lock screw) and on the front of the phase condenser (a knurled wheel). The light and dark rings or discs should be concentric. 54 Cont'd E n c l o s u r e (3) ASBESTOS COUNTING PROCEDURES (Cont'd) 5. 6. Read the fall length (200 L) of the reticl^gf^dj ih'millimeters (reticle size -= 100W.jc.200L). . . ' ' _ -* . " . ' K * Calculate L: L = Xmm x 1000 p/mm = X microns '% 200 7. Calculate circle sizes by the formula D = L [/2^ - n = circle number L = microns, p D = diameter, p 8. The counting area is the square composed of 6 rectangles on the left side of the recticle. The area is found by dividing the full length measured in mm by 2 and squaring the result. Example: Length (200L) = .137 mm Counting area ^ .137/2 -= (.0685)^ = .00469 ASBESTOS COUNTING AND SIZING: ----- 1. Count only the fibers (aspect ratio of at least 3 to 1). 2. Count only the fibers 3 pm in length. 3. Count any fiber .5 pm in length if it is entirely within the field: of area or if some portion is within and the part without crosses one or both of the'pre-selected-adjacent sides.- The intent-of_ this rule is to exclude.potentially eligible fibers that are either outside the field of view or that cross either of the remaining sides (even if the fiber also crosses one of the selected sides). / - 4. Count as many field as required to yield at least 100 fibers: at least 20 and at most 100. 5. The fields of view are selected without looking into the eyepieces. 6. The fields are selected in a straight line running from the tip * of the wedge (center of the filter) to the center of the arc side (circumference of the filter). 7. Do not count a field containing more than twenty fibers unless there is very little fiber overlap and very few background particulates. 54 Cont'd E n c l o s u r e (3) ASBESTOS COUNTING PROCEDURES (Cont'd) 8. When an agglomerate (a group of particulates h^fc-^dher.e. to one another) covers at most 1/6 of the fie1*d'rkaj -reject, the field and select another. * . . * , * ffc- 9. Since you must be able to see both ends of a fiber, ideally you must only size free fibers - that is, fibers that are unattached and you can see both ends. CALCULATION OF CONCENTRATION: Concentration = (Ay. Fiber Cnt.)(filter area) (field area)(Sample volume)(1000) Av. Fiber Count: Average fiber count in fibers/field Filter area: 855 nm for 37 mm dia. membrane filters Counting area: Reticle calibrated in mm2/field ' -ft Sample volume: Total time in minutes x flow rate in liters/minute . 1000: (milliliters/liter)* If blanks are used, subtract the average blank count of the same. Prepared by: ' (Pi L. R. LIUKONEN Industrial Hygienist Occupational & Environmental Health Service Naval Regional Medical Center, Bremerton June 1976 '5* cont'd. E n c l o s u r e (3) P r n n r i; o i:: APPENDIX I X SAMPLING DATA AND MATERIAL DESCRIPTION CONTENTS ' Section I Storage Section II Hand punching Section III Hand operated mechanical punching Section IV Machine punching Section V Hand sha'ping Section VIMachine shearing Section VII Machine nibbling Section VIII Installation Section IX Removal and concurrent installation Section X Clean-up following removal Section XI Removal with simultaneous clean-up - Section XII Miscellaneous and multiple operations 55 SECTION I: Storage; Operation Sample Number y Airborne Asbestos Fiber Cone . Sample Time Total Air (# fibers 5 ;u/cc air) *, !(Kin} ; Volume (1) Storage areas 1 for receipt & 2 issue 3 4 <0.01 < 0.01 <0.01 0.02 - , 124^7 123."8 125.0 127.0 249.4 247.7 250.0 254.0 5 0.03 105.7 211.4 6 0.02 116.2 232.5 7 0.03 117.5 235.0 8 0.05 132.0 264.0 * 9 < 0.01 132.0 264.0 10 <0.01 102x6 205.2 11 <0.05 123.1 246.3 12 < 0.01 13 <0.02 113.3 '60.0 226.6 120.0 14 _< 0.02 60.0 120.0 X =0.02 Storage areas 1 for use 2 3 4 5 6 7 0.04 < 0.01 0.04 0.03 <0101 0.05 _ 0.12 X =0.04 97.2 118.4 107.9 122.0 112.0 98.5 103.1 194.5 236.8 215.8 244.0 224.0 196.9 206.2 - 5330-00-880-4032 " " 585-9502 " " 942-4727 " 942-4728 " " 197-8335 " " 197-8496 " " 197-9633 " " 197-8536 " " 197-8490 " " 197-8498 " " 197-9635 " " 238-9029 " " 197-8491 " " 184-4168 ' " 197-8538 " " 197-8492 " " 184-4170 *' " 197-8539 " " 197-8493 5330-00-197-8526 " " 184-4172 " 599-9544 " " 197-8494 '* " 197-8527 " " 197-8541 " " 197-8528 " " 197-8542 " " 197-8530 " " 186-1745 " " 599-9545 " " 186-1747 " " 599-9546 " 186-1749 " " 599-9547 " " 245-8256 5640-00-270-1619 5330-00-186-4099 " " 186-4104 5330- 00-186-4099 ft " 186-4109 1 " 803-1921 It " 803-1921 It " 803-9003 II " 180-4100 1 " 180-7200 1 " 186-4100 It " 196-6987 5640- 00-270-1622 5330- 00-268-9880 Local purchase items are shown on following pages (56a 56r) 56 *' i" 5 33 O-LL-S 04-0062 -A R T NO. nomenclature C IO /A P L B-176 LO W PRESS NAVY 150 p! U /l COST c h a n g e a c t io n MO. DAY YEAR DESCRIPTIO N GASKET, FLANGE ASB . - i' > n - <U V / ^ 1 ' i > . . r/2 in COMPRESSED ASBESTOS PER M IL-A- 17472 1/8 IN THICK SIZE 1/2 IN IPS 3 9 /1 6 IN DIA, PC 2 7/16 IN 3 HOLE, 1/2 IN BOLT SIZE RN B-176 LOW PRESS NAVY 150 PSI STD MFR NAVSEA SYS COMMAND F S C M 80064 RNVC 1 ADDED DATA 1 80064B-176 LOW PRESS NAVY 150 PSI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC TECHNICAL PARTS CHANGE RECORD i3no psns io/ irev.u -7S)-- By K .L . 5 /1 9 /7 7 c/s,. 24 :insn 533 0-LL-S 04-0064 PART NO. CHANGE AC TIO N I NOMENCLATURE 1 ! C IO /A P L B-176 LOW PRESS NAVY 150 PSI STD. U /l COST MO. DAY YEAR D E S C R IP T IO N GASKET, FLANGE ASB 1 IN COMPRESSED ASBESTOS PER M IL-A-17472 1/8 IN THICK SIZE 1 IN IPS 4 1/4 IN DIA PC 3 1/8 IN 4 HOLE, 1/2 IN BOLT SIZE RN B-176 LOW PRESS NAVY 150 PSI STD MFR NAVSEA SYS COMMAND F S C M 80064 RNVC 1 ADDED DATA 1 8 0 0 6 4 B-i76 LOW PRESS NAVY 150 PSI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC \ - TEC H N IC A L PARTS C H A N G E R ECO RD u n o p s n s to/ i r e v . i i-7si K . L . 5 /1 9 /7 7 c/so. 24 p NSN 5 3 3 0 -L L -S 04-0065 n o m e n c l a t u r e B-176 LOW PRESS NAVY 150. P S g j PART NO. f j C H AN G E A C TIO N C ID /A P L U /l > . MO. DAY YEAR DESCRIPTIO N GASKET, FLANGE COMPRESSED ASBESTOS ASB PER M IL-A-17472 1/8 a* ./c>>*; ;O : >1 1 /4 IN ' ' :-s? ' IN THICK ~ " SIZE 1 1/4 IN IPS 4 1/2 IN DIA, PC 3 3 /8 IN 4 HOLE, 1/2 IN BOLT SIZE RN B-176 LOW PRESS NAVY 15 0 .ESI STD.. MFR NAVSEA SYS COMM AND FSC M 80064 RNVC 1 ADDED DATA 1 80064B-176 LOW PRESS NAVY 150 PSI STD U N IT PACKAGE TO BE 25 EA SEALED IN PLASTIC TECHNICAL PARTS CHANGE RECORD u n d psns ir e v . 11-751 BY. K .L . 5 /1 9 / 7 7 .C /5 4 0 . 24 [ NSN 533 0 - L L - S 04-0063 :1 PART NO. r c h a n g e ACTION --. D E S C R IP T IO N n GASKET, FLANGE ... . n o m e n c l a t u r e B -176 LW PRESS NAVY 150 PSI STD . c io / a p c - U /l COST MO. DAY YEAR ASB. 3 /4 IN COMPRESSED ASBESTOS PER MIL-A-17472 l/ 8 IN THICK SIZE 3 /4 IN IPS 3 13/16 IN DIA, PC 2 11/16 IN . 4 H OLE, 1/2 IN BOLT SIZE RN B-176 LOW PRESS NAVY 150 PSI STD MFR NAVSEA SYS COMMAND FSCM 80064 RNVC 1 ADDED DATA 1 80064B-176 LOW PRESS NAVY 150 PSI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC { TECHNICA L PARTS CHANGE RECORD i 3no psns <io/ 4 isey. i . - 7 si 3Y K . L . 5 /1 9 /7 7 c/540. 2 4 . ^c / 'ITOV-WM IN,'.(/.mjjcjry?!jjty |<SSNN 5 3 3 O -LL-S04-0067 T NO. t I ANGE ACTIO N DESCRIPTIO N n o m e n c la t u r e B-176 IXDW PRESS NAVif 150 PSI C IO /A R L U /l MO, GASKET, FLANGE i f> /v , ASB it V/ ^ i 2 UN- ' r; COMPRESSED ASBESTOS PER M IL-A-174.72 1/8 IN THICK SIZE 2 IN IPS 5 9/16 IN DIA, PC 4 7/16 IN n - -6 HOLE , 1/2 IN BOLT SIZE - r MFR NAVSEA SYS COMMAND RN ,B-176 LOW PRESS NAVY 150 PSI STD FSCM 80064 RNVC 1 ADDED DATA r 1 80064B-176 LOW.PRESS NAVY 150 PSI STD r UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC by K .L . 5 /1 9 / 7 7 c-./Ktn 24 TECHNICAL PARTS CHANGE RECORD 13ND PSNS 44 10/4 (R E V . 11-75) 5 3 3 0 -L L -S 04-0066 i- PART NO. { ANGE AC TIO N n o m e n c l a t u r e B-176 LOW PRESS NAVY 150 P SI STD C ID /A P L U /l COST _ MO. OAY Y E A R A S C R IP T IO N F GASKET, FLANGE -- - C COMPRESSED ASBESTOS ASB ' PER M IL-A-17472 1/8 IN THICK 1 1/2 IN L SIZE 1 1/2 IN IPS 5 1/16 IN DIA, PC 3 15/16 IN 6 H OLE, 1/2 IN BOLT SIZE RN B-176 LOW PRESS. NAVY 150 PSI STD M ?R NAVSEA SYS COMMAND ADDED DATA FSCM 80064 RNVC 1 1 80064B-176 LOW PRESS NAVY 150 PSI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC fE C H N IC A L PARTS CHANGE RECORD isno psns io / 4 irev. i 1 -7 5 1 K . L . 5 /1 9 /7 7 . C/seo.24 <L c Hsu 5 3 3 0 -L L -S 0 4 - 0 2 4 2 [ NO. C ANGE A C TIO N . n o m e n c la t u r e B - l / 6 LOW PRESS NAVY 150 PSI C ip /A P L U /l MO. DAY YEAR DESCRIPTIO N GASKET, FLANGE t, '-j nrr ; ASB " 3 ifcr ' CO M PRESSED ASBESTOS PER M IL-A-17472 1 /8 IN THICK ^ SIZE 3 IN IPS 6 5 /8 . IN DIA, PC 5 1/2 IN rf 8 H O LE, 1/2 IN BOLT SIZE M FR NAVSEA SYS COM M AND RN B-176 LOW PRESS NAVY 150 PSI STD FSCM 80064 RNVC 1 A D D ED DATA 1 80064B-176 LOW PRESS NAVY 150 PSI STD ' U N IT PACKAGE TO BE 25 EA SEALED IN PLASTIC [' TECHNICAL PARTS CHANGE RECORD no psns 4* io/4 i r e v . i i - 7si BY. K . L . 5 /1 9 /7 7 c/sw.24 M *' J 330-LL-S04-072 PART NO. . ' N O M E N C L A T U R E 1 ANSI B 16.5" 150 PSI C ID /A P L U /l COST C | NGE A C TIO N ^ fD ESC R IPTIO N >SKET, FLANGE _ ASB . . COMPRESSED ASBESTOS PER MIL-A=17472,'1/8 IN THICK -- - - MO. DAY YEAR 1-1/2 IN ... = `DIMENSIONS PER ANSI B-16.5 150 PSI 1-1/2 IN IPS j RN ANSI B-16.5 150 PSI VFR. AMERICAN NATIONAL STANDARDS INSTITUTE FSCM 80204 - ` RNVC 1 I . 1-80204 ANSI B-16.5 150 PSI t l TECHNICAL PARTS CHANGE RECORD no p s n s 44 10 /4 i r e v . i i - 7 si K.L. 3-21-77 . C /54 0.. 5 ^ nsn . 533 0-LL-S 04-0244 " A R T NO. CHANG E A C TIO N NOMENCLATURE C iO /A P L 0 - 1 / O L.KJ vv. r i u . 0 0 n o v i ju/i '- - JS MO. * OAY y e a r ' A DESCRIPTIO N GASKET, FLANGE ASB :-7n .4 IN *' ^ ' ' i COMPRESSED ASBESTOS PER M IL-A-17472 1/8 IN THICK ` r SIZE 4 IN IPS 7 11/16 IN DIA, PC 6 9/16 IN r 8 HOLE, 1/2 IN BOLT SIZE RN B-176 LOW PRESS NAVY 150 PSI STD .MFR NAVSEA SYS COMM AND ... ..... FSC M 80064 RNVC 1 r ADDED DATTA 1 80064B-176 LOW PRESS NAVY 150 PSI STD r UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC r TECHNICAL PARTS CHANGE RECORD u n d p s n s 4io / 4 <r e v . u - 7 si BY K .L . 5 / 1 9 / 7 7 . c/sto.. 24 i nsn 5 3 3 0 - L L - S 0 4 -0243 r PART N O / r CHANGE ACTION D ESC R IPTIO N n o m e n c l a t u r e b -176 LOW PRESS NAVY 150 P SI STD ' C ID /A P L 1 U /l COST MO. OAY y e a r GASKET, FLANGE ASB 3 1/2 IN COMPRESSED ASBESTOS PER M IL-A-17472 1/8 IN THICK ' - SIZE 3 1/2 IN IPS 7 3/16 IN DIA, PC 6 1/16 IN 8 HOLE, 1/2 IN BOLT SIZE RN B-176 LOW PRESS NAVY 150 PSI STD MFR NAVSEA SYS COMM AND ' FSC M 80064 RNVC I f ADDED DATA 1 80064B-176 LOW PRESS NAVY 150 PSI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC T E C H N IC A L PARTS CHANGE RECORD u n d p s n s io/ i r c v . n-7si B Y _ K.L?" 5/ l 9/ 7e7/ SCO. 24 / 5330-LL-S04-0246 PART NO. C H AN G E ACTION n o m e n c l a t u r e fi-176 LOW PRESS NAVY 150 .//x B B j *------------------:------------- !--_______________ C IO / A PL u/l MO. OAY YEAR DESC R IPTIO N GASKET, FLANGE ASB * p f n ;6 IN \ * COMPRESSED ASBESTO S PER M IL-A-1747 1/8 IN TfflCK , , . ' _* - SIZE 6 IN IP S, 10 1 /8 IN DIA, PC 8 7 /8 IN 10 HOLE 5 /8 IN BOLT SIZE RN B-176 LOW PRESS NAVY 150 PSI STD MFR NAVSEA SYS COMM AND - = - FSM 80064 RNVC 1 ADDED DATA 1 80064B-176 LOW PRESS NAVY 150 PSI STD . UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC ' ' TECHNICAL PARTS CHANGE'RECORD undpsns io/ (rev, i i -75> BY _ K .L . 5 /1 9 /7 7 .C/S40. 24. nsn 5 3 3 0-LL-S 04-0245 N O M E N C LA TU R E B-176 LOW PRESS NAVY 150 PSI STD PART NO, C H AN G E ACTIO N C IO /A P L U /l COST MO. OAY YEAR DESCRIPTIO N GASKET, FLANGE . ' ASB 5 IN ' COMPRESSED ASBESTOS PER M IL-A-17472 1/8 IN THICK . ~ SIZE 5 IN IPS 9 1/16 IN DIA, PC 7 13/16 IN . : 10 HOLE S /8 IN BOLT SIZE RN B-176 LOW PRESS NAVY 150 PSI STD MFR NAVSEA SYS COMMAND F S C M 80064 RNVC ADDED DATA 1 80064B176 LOW PRESS NAVY 150 PSI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC TECHNICAL PARTS CHANG E RECORD )3nd psns io/ irev. m - tsj K . L . -5 /1 9 /7 7 C/S40._ 2 4 ft f NSN --5 3 3 0 -L L -S 0 4 -0070 ART NO. N O M E N C LA TU R E .- ANSI B16.5 150 PSI C IO /A P L U/l N C H A N G E 'A C T IO N , .... . DESCRIPTION GASKET, FLANGE ASB COMPRESSED ASBESTOS PER MIL-A-17472 1/8 IN THICK ..... MO. OA Y year ' p '"3/4 IN- ^ 4 i ' DIMENSIONS PER ANSI B-16.5 150 PSI 3/4 IN IPS RN ANSI B-16.5 150 PSI .MFR. AMERICAN NATIONAL STANDARDS INSTITUTE ^ FSCM 80204 RNVC 1 1-80204 ANSI B-16.5 150 PSI TECHNICAL PARTS CHANGE RECORD no psns mio/ (rev. i i -7sj BY_K_._L_.__3_-_2_1_-_7_7_ C/540._2 COMPRESSED ASBESTOS PER MIL-A-17472, 1/8 IN THICK DIMENSIONS PER ANSI-B-16.5 _.150 PST .1/2 IN IPS RN ANSI.B-16.5 150 PSI MFR. AMERICAN NATIONAL STANDARDS INSTITUTE FSCM 80204 . 1-80204 ANSI B-16.5 150 PSI _ RNVC 1 TECHNICAL PARTS CHANGE RECORD n o p s n s 4 1 0 /4 i r e v . i i - 7 si K.L. 3-21-77 .c/so?_ MSN * - 5330-LL-S04-0073 AR T NO, CHANGE AC TIO N N O M tN C L A U H t ANSI B16.5 C ID /A P L 150 PSI ' U /l W MO. DAY YEAR GASKET, FLANGE ASB COMPRESSED ASBESTOS PER MIL-A-17472, 1/8 IN THICK 2 IN IPS <u v-/ -i <' j; J DIMENSIONS PER ANSI B-16.5 150 PSI 2 IN IPS RN ANSI B-16.5 150 PSI MFR. AMERICAN NATIONAL STANDARDS INSTITUTE FSCM 80204 RNVC 1 nr - '1-80204 ANSI B-16.5 150 PSI........-1 - rTECHNICAL PARTS CHANGE RECORD i 3n o p s n s 44io/4 ( r e v . i -7 s> B Y .K;L*. 3-21-77 2 .C/S40._ r KSN 533-LL-S04-0071 XRT.JCO. NOMENCLATURE C ID /A P L ANSI B16.'5 150 PSI U /l COST ^HANG A C T IO N -- ' i DESCRIPTION" --~ = r: GASKET, FLANGE ASB COMPRESSED ASBESTOS PER MIL-A-17472, 1/8 IN THICK 1-1/4 IN MO. OAY YEAR DIMENSIONS PER ANSI B-16.5 150 PSI 1-1/4 IN IPS - RN ANSI B-16.5 150 PSI MFR. AMERICAN NATIONAL STANDARDS INSTITUTE FSCM 80204 RNVC 1 1-80204 ANSI B-16.5 150 PSI L TECHNICAL PARTS CHANGE RECORD a n o p s n s < < io / i r e v : h - 7 si K.L. 3-21-77- . C /S 40. . >411 m pun,1tinm imi KSN 5330-LL-S04-0074 AHT NO. .H A N G E A C TIO N , - . X NOMENCLATURE C ID /A P L ANSI B16.5 150 PSI u/` /it f ' .'w MO. OAY YEAR. DESCRIPTIO N ; GASKET, FLANGE ASB 2-l/2v$f T j^ C r- COMPRESSED ASBESTOS PER MIL-A-17472, 1/8 IN THICK ! . 1 DIMENSIONS PER ANSI B-16.5 150 PSI 2-1/2 IN IPS ..... ; , ^ . RN ANSI B-16.5 150 PSI MFR. AMERICAN NATIONAL STANDARDS INSTITUTE FSCM. 80204 RNVC.l 1-80204.ANSI B-16.5 150 PSI [ - -- TECHNICAL PARTS CHANGE RECORD n o p s n s 4 io / 4 r e v . u - ts) K.L. 3-21-77 NSM 5330-LL-S04-0247 PART NO. HANGE AC TIO N . .- N O M EN C LATU R E. . ANSI B16.5 150 PSI C ID /A P L -. *. .` .. U /l COST MO. OAY YEAR D ESC R IPTIO N GASKET, FLANGE ASB 3 IN COMPRESSED ASBESTOS PER MIL-A-17472, 1/8 IN THICK DIMENSIONS PER ANSI B-16.5 150 PSI 3 IN IPS p RN ANSI B.16.5 150 PSI MFR. AMERICAN NATIONAL STANDARDS INSTITUTE FSCM 80204 RNVC 1 ^ 1-80204 ANSI B/16.5 150 PSII I [ TECHNICAL PARTS CHANGE RECORD i 3n d psns i b e v . it-7si 3-21-77 K.fc B Y _________ __________ 2 C/S40.____ J4SN ; 5330-LL-S04-0249 -A R T NO. NOMENCLATURE C ID /A P L ANSI B16.5 150 PSI U /l M :"i' HANG E AC TIO N MO. DAY YEAR DESCRIPTIO N GASKET, FLANGE ASB COMPRESSED ASBESTOS PER MIL-A-17472, 1/8 IN THICK )')'|v . `4 TN - i . } DIMENSIONS PER ANSI B-16.5 150 PSI 4- lH (Pc5 r RN ANSI B-16.5 150 PSI r MFR. AMERICAN NATIONAL STANDARDS INSTITUTE ,, FSCM 80204 1-80204 ANSI B-16.5 150 PSI RNVC.l. rTECHNICAL PARTS CHANGE RECORD is n o p s n s 10 /4 ir e v . it - 7 S ) I BY 3-21-77 K.L , C /540., HSN I 5330-LL-S04-0248 PART NO. r~ * HANG E AC TIO N NOMENCLATURE . . . ANSI B16.5 150 PSI C ID /A P L U /l COST MO. OAY YEAR - DESCRIPTIO N GASKET, FLANGE ASB 3-1/2 IN COMPRESSED ASBESTOS PER MIL_A-17472, 1/8 IN THICK - L DIMENSIONS PER ANSI B-16.5 150 PSI 3-1/2 IN IPS I RN ANSI B-16.5 150 PSI MFR. AMERICAN NATIONAL STANDARDS INSTITUTE FSCM 80204 I 1-80204 ANSI B-16.5 150 PSI RNVC 1 TECH N IC A L PARTS CHANGE RECORD u n o p s n s io / 4 | r e v . 11.751 K. L . BY. 3 - 2 1 - 7 7 c/5<0- 2 cMSN 5330-LL-S04-0251 ART NO. : h a n g e a c t io n . no m enclature C IO /A P L ANSI B16.5 150 PSI U /l c fig g ig S MO.* D A Y y e a r GASKET, FLANGE i p -n . ASB * . V * r COMPRESSED ASBESTOS PER MIL-A-17472 , 1/8 IN THICK DIMENSIONS PER ANSI B.16.5 150 PSI 6 IN IPS nr IfFR. AMERICAN NATIONAL RN ANSI B16.5 STANDARDS. INSTITUTE . 1-80204 ANSI 150 PSI FSCM B16.5 150 PSI 80205 RNVC :I I TECHNICAL PARTS CHANGE RECORD i 3nd psns 4to/< (r ev . u -7si b y K.L. 3-21--77___ c/sia. 2 r COMPRESSED ASBESTOS PER MIL A-17482, 1/8 IN THICK V ~ 1 DIMENSIONS PER ANSI-B-16.5 150 PSI 5 IN IPS RN ANSI B16.5 150 PSI MFR. AMERICAN NATIONAL STANDARDS INSTITUTE FSCM 80204' 1-80204 ANSI B-16.5 150 PSI RNVC 1 < TECHNICA L PARTS CHANGE RECORD u n d p s n s < io / 4 i r e v . n - 7 5 1 K.L. 3-21-77 .C/S40.. nsn 533 0 -L L -S 00-16 03 n o m e n c l a t u r e B -17b LOW P K L S b IS IA V Y 1 0 U r o i ------------ -> n NO. m a n g e a c t io n DESCRIPTION C IO /A P L U /l MO. OAY YEAR GASKET, FLANGE ASB <u' t ' COMPRESSED ASBESTOS PER M IL-A-17472 1/16 IN THICK : SIZE-5 IN IPS 9 1/16 IN DIA, PC 7 13/16 IN 10 HOLE 5 /8 IN. BOLT SIZE . .. RN B-176 LOW.PRESS NAVY 150 PSI ST D . MFR NAVSEA SYS COMM AND : FSCM 80064 RNVC1 ADDED DATA 1 80064B-176 LOW PRESS NAVY 150 PSI S T D / UNIT PACKAGE TO BE 25 A SLD'IN PLASTIC TECHNICAL PARTS CHANGE RECORD no psns mio/4 irev.11-7 K .L . 5-19-77 24 B Y _______ :___________________ C /S 4 0 .______ * sn 5 3 3 0-L L-S00-1604 . . n o m e n c l a t u r e B-176 IO W PRESS NAVY 150 P S I STD PART NO. h a n g e a c t io n C ID /A P L u/l . COST MO. OAY YEAR D ESC R IPTIO N GASKET, FLANGE ASB 6 IN COMPRESSED ASBESTOS PER M IL-A-17472 i/1 6 IN THICK ~ SIZE 6 IN IPS 10 1 /8 IN DIA, PC 8 7 /8 IN . I' 12 HOLE 5 /8 IN BOLT SIZE RN B-176 LOW PRESS NAVY ISO PSI STD MFR NAVSEA SYS COMMAND F S C M 80064 RNVC 1 ADDED DATA 1 8 0 0 6 4 B-176 LOW PRESS NAVY 150 PSI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC TE C H N IC A L PARTS CHANGE RECORD 13110 p s n s 1 0 / * i r e v . i i - 7 si b y K .L . 5 /1 9 /7 7 c/5o.JLi. rNSN 533 U-LL-SOU-lbUl ART NO. HANG E A C TIO N NOMENCLATURE t J - i / O i A J VV f K E O 1NRVJC l O U f C IO /A P L U /l MO. . DAY YEAR rD E S C R IP TIO N GASKET, FLANGE ASB COM PRESSED ASBESTOS PER M IL-A -17472 1/16 W t IN THICK >Ji: S 1/2 ; in ' '- ^ SIZE 3 1/2 IN IPS 7 3/16 IN DIA, PC 6 1/16 IN r 8 HOLE, 1/2 IN BOLT SIZE RN B-176 LOW PRESS NAVY 150 P SI STD M FR NAVSEA SYS COMMAND FSC M 80064 RNVC 1 r ADDED DATA . 1 80064B-176 LOW PRESS NAVY ISO PSI STD r U N IT PACKAGE TO BE 25 EA SEALED IN PLASTIC. TECHNICAL PARTS CHANGE RECORD u n d psns 4to/4 <r e v . i i - 7 si BY K .L . 5 /1 9 /7 7 c/s4* 24 533O-LL-S00-16O2 . N O M EN C LATU R E B-176 LOW. PRESS NAVY 15.0PS1 ST D . PART NO. h a n g e a c t io n - Cl D /A P L U /l COST MO. OAY YEAR D ESC R IPTIO N 0 GASKET, FLANGE ASB 4 IN 0 COM PRESSED ASBESTOS PER M IL-A-17472 1/16 IN THICK SIZE 4 IN IPS 7 11/16 IN DIA, PC 6 9/16 IN - 8 HOLE, 1/2 IN BOLT SIZE RN B-176 XOW PRESS NAVY 150 PSI STD MFR NAVSEA SYS COMMAND F SC M 800 6 4 RNVC 1 ADDED DATA 1 80064 B-176 LOW PRESS NAVY 150 PSI STD UN IT PACKAGE TO 3E 25 EA SEALED IN PLASTIC TE C H N IC A L PARTS CHANGE RECORD u n o p s n s 4 i o / i r e v . i i - t s i B Y . K.L. 5/19/77 c/s,0.24 . b M S 3 3 0 -L L -S 0 0 -1 S 9 9 ` ART NO. r CHANGE ACTION DESCRIPTION N O M E N C LA TU R E . B-176 LOW.PRESS NAVY ISO C IO /A P L U /l MO. OAT YEAR GASKET, FLANGE ASB ** ^ ' 2 ` l / 2 IN COMPRESSED ASBESTOS PER M IL-A -17472 1/16 IN THICK ' ^ SIZE 2 1/2 IN IPS 6 1/8 IN DIA, PC 5 IN 6 HOLE, 1/2 IN BOLT SIZE RN B-176 LOW PRESS NAVY 1 5 0 ;P S I STD MFR NAVSEA SYS COMMAND F S C M 80064 RNVC 1 ADDED DATA 1 80064B-176 LOW PRESS NAVY 150 P SI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC TECHNICAL PARTS CHANGE. RECORD no PSNs44.0/4 REV. I.-7S) ' '' ry K .L .5 /1 9 /7 7 c ju a . 2 4 MSN 5 3 3 0 -L L -S 0 -1 6 0 0 c PART no. c CHANGE ACTION - in o m e n c la t u r e B -1 7 6 C ID /A P L D DESCRIPTION : GASKET, FLA N G E ....................... ASB n COMPRESSED ASBESTOS PER M IL-A -17472 1/16 L O W PRESS IN THICK N A V i 1 5 0 P S I S T D *" ; U /l COST MO. OAY YEAR . .3 IN ; * SIZE 3 IN IPS 6 5 /8 IN DIA, PC 5 1/2 IN - c 8 HOLE, 1/2 IN BOLT SIZE RN B-176 LOW PRESS NAVY 150 PSI STD . l: MFR NAVSEA SYS COMMAND ADDED DATA . l FSC M 80064 RNVC 1 1 80064B-176 LOW PRESS NAVY 150 PSI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC TECHNICAL PARTS CHANGE RECORD u n o psns io/ irev.n-7s> K .L . 5 / 1 9 / 7 7 C/S40... - NSN 5 33 0-LL-S00-159 7 ART NO. CHANGE AC TIO N no m enclature C ID /A P L tt-i/b L O W LKESS NAVX 13U 'SfciC&OWj H p /.-.--' U /l ^ M O . O A Y Y E A R - r r r n GASKET, FLANGE ASB ^ t' i ' 1 j / 2 TN ' COM PRESSED ASBESTOS PER M IL-A -17472 1/16 IN THICK ' : ^ ' , SIZE 1 1 /2 IN IPS 5 1/16 IN D IA , PC 3 15/16 IN / . 6 HOLE, 1/2 IN BOLT SIZE . . . RN B-176 LOW PRESS NAVY 150 PSI ST D . MFR NAVSEA SYS COMMAND ADDED DATA ....................... - . f SCM 80064 RNVC 1 / 1 80064B-176 LOW PRESS NAVY .150 PSI S T I ? n r. UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC TECHNICAL PARTS CHANGE RECORD u n d p s n s * io / 4 (r e v . u - ts) B;YY K .L . 5 /1 9 /7 7 .C /5 4 0 . 24 nNSN 533 0 -L L -S 00-15 98 -PART NO . CHANGE A C TIO N f O ESCRIPTIpN n o m e n c l a t u r e B-176 LOW PRESS NAVY 15E PSI STD ' -- C ID /A P L * U /l COST MO. OAY YEAR c GASKET, FLANGE ' ASB 2 IN COMPRESSED ASBESTOS PER M IL-A -17472 1/16 IN THICK ' c SIZE 2 IN IPS 5 9/16 IN DIA, PC 4 7/16 IN~ r 6 HOLE, 1/2 IN BOLT SIZE RN B-176 LOW PRESS NAVY 150 PSI STD MFR NAVSEA SYS COMMAND F SC M 80064 RNVC 1 ADDED DATA 1 80064B-176 LOW PRESS NAVY 150 PSI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC TEC H N IC A L PARTS CHANGE RECORD t 3 N o p s n s 4 . 1 0 / 4 ( r e v . 11-751 .K.L. 5 /1 9 / 7 7 24 .C/ 540-. 5" 6- o nsn 53 3 0-L L -S 00-1595 - R T NO. CHANGE A C TIO N D E S C R IP T IO N NOMENCLATURE C ID /A P L JL /u u \ w u i v . w a. U /l L 'I*K r t MO. OAY YEAR GASKET, FLANGE ASB ^ ILIN COM PRESSED ASBESTOS PER M IL-A -17472 1/16 IN THICK 1 SIZE 1 IN IPS 4 1/4 IN DIA, PC 3 1/8 IN 4 HOLE, 1/2 IN BOLT SIZE RAT B-176 LOW PRESS NAVY 150 PSI STD MFR NAVSEA SYS COMMAND F SC M 80064 RNVC 1 ADDED DATA 1 80064B -176 LOW.'PRESS NAVY 150 PSI STD . " UNIT. PACKAGE TO BE 25 EA SEALED. IN PLASTIC .... - .............. - . TECHNICAL PARTS'CHANGE RECORD u n o p s h s 4 4 10 /4 (r e v . i f - 7 5 ) - - BY * K .L. 5 /1 9 /7 7 ^_C /540. 24 hsn'* . 5 3 3 0 -L L -S 0 0 -1 5 9 6 r N O M E N C LA TU R E B-176 LOW PRESS NAVY 15 0 PSI ST D " ' P AR T NO. CHANGE A C TIO N ` C ID /A P L U /l COST MO. OAY YEAR DESCRIPTIO N GASKET, FLANGE ASB COM PRESSED ASBESTOS PER M IL-A -17472 1.16 IN THICK 1 l/4 IN SIZE 1 1/4 IN IPS 4 1/2 IN DIA, PC 3 3 /8 IN 4 H OLE, 1/2 IN BOLT SIZE RN B-176 LOW PRESS NAVY ISO PSI STD MFR NAVSEA SYS COMMAND ' F S C M 80064 RNVC ADDED DATA 1 80064B-176 LOW PRESS NAVY ISO PSI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC TECHNICAL PARTS CHANGE RECORD o n d p s n s m o / < i r e v . u - t s i er K . L. ,, E /1 9 /7 7 r/^a- 24 -SK S 3 3 0 -L L -S 00-1593 ` n o m e n c l a t u r e B~176 LOW PRESS NAVY 150 P$i PART NO. C IO /A P L U /l COST CHANGE AC TIO N MO. DAY YEAR DESCRIPTIO N r GASKET, FLANGE- ASB r COMPRESSED ASBESTOS PER MIL-A-17472 1/16 IN THICK r SIZE 1/2 IN IPS 3 ` 9/16 IN DIA, PC 2 11/16 IN O'T O : ... 1/2 IN 3 HOLE, 1/2- IN BOLT SIZE RN B-176 LOW-PRESS-NAVY- 150 PSI STD - r MFR NAVSEA SYS COMMAND . F S C M 80064 RNVC 1 ADDED DATA 1 80064B-176 LOW PRESS NAVY-150 PSI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC r V K-X. 5/19/77 24_ TECHNICAL PARTS CHANGE RECORD ,3no psns 44io/4 (rev.u -7s> .. [ 5330-LL-S00-1594 PART NO. CHANGE AC TIO N n o m e n c l a t u r e B-176 LOW PRESS NAVY 150 PSI STD C IO /A P L U /l COST MO. OAY YEAR E DESCRIPTION G A S K E T ,F L A N G E ASB E COM PRESSED ASBESTOS PER M IL-A-17472 1/16 IN THICK 3 /4 IN - - SIZE 3 /4 IN IPS 3 13/16 IN DIA, PC 2 11/16 IN E 4 H OLE, 1/2 IN BOLT SIZE MFR NAVSEA SYS COMMAND RN B-176 LOW PRESS NAVY 15 0 PSI STD F S C M 80064 RNVC 1 ADDED DATA 1 8 0 0 6 4 B-176 LOW PRESS NAVY 150 PSI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC TECHNICAL PARTS CHANGE RECORD ^ sks m / mev. u-7si BY . K ,L . 5 /1 9 /7 7 .C/540- 24 * sn 5330-LL-S02-9002 IN O M E N C LA TU R E 29N-L839, SYL ` A H I NO. CHANGE A C TIO N rDESCRIPTIO N GASKET, SPIRAL WOUND C ID /A P L N/A U /l MO. OAY YEAR A. \J i:i . r-i ' i. ' ...? : . N/A 316 CRES & ASBESTOS 1500p5.yi000 DEGREE SERVICE DIAMOND SHAPE 3 3/8 IN X 4 1/4 IN X 1/4 IN FLG WIDTH X .175 IN THICK FOR BOILER HANDHOLE -- - RN 29N-L839, STYLET MFR FLEXITALLIC CO FSCM 72433 RNVC 2 2 7243329N-L839, STYLE T ^ ^ TECHNICAL PARTS CHANGE RECORD u n o p s n s io / 4 (r e v . m - t s ) R.A. 11-8-77 B Y _________ __________ - 2 C /S 4 0 ._____ hsn 5 33 0 -L L -S 00-1592 n o m e n c l a t u r e B-176 LOW PRESS NAVY 150 P SI STD TART NO. CHANGE A C TIO N DDi ESC R IPTIO N c GASKET, PIANGE C ID /A P L ASB - U /l COST MO- OAY YEAR 1/4 IN _ [; COM PRESSEDASBESTOS PER M IL-A-17472 1/16 IN THICK SIZE 1/4 IN IPS 3 1/4 IN DIA, PC 2 1/8 IN 3 HOLE, 1/2 IN BOLT SIZ E RN B-176 LOW PRESS NAVY 15 0 PSI STD MFR NAVSEA SYS COMMAND F SC M 80064 RNVC 1 ADDED DATA 1 80064-B -176 LOW PRESS NAVY 15 0 PSI STD UNIT PACKAGE TO BE 25 EA SEALED IN PLASTIC TECHNICAL PARTS CHANGE RECORD u n o p s n s < 4 . 0 / i r e v . u - 7 si . K . L . 5 /1 9 /7 7 . C/50. 24 C- r SECTION II: Hand Punching Operation Sample No. Hand punching 1 No controls Airborne.Asbestos Fiber Concentration (fibers >5n/cc air) 3.00 Sample Time Total Air (min) Volume (1) c.. - ;'v ;0.. * f * % * * * . . Hand punching Housekeeping 1 <0.05 2 <0.05 3 <0.05 4 <0.05 5 <0.05 6 0.15 x = 0.07 * Data Unavailable 28.0 29.6 30.7 30.8 30.6 27.8 56.0 59.2 61.4 61.6 61.2 55.6 N S N ___ ,5330-00-585 9501 ) 57 SECTION III: Hand Operated Mechanical Punching. r Operation Sample No. Hand Operated Airborne Asbestos Fiber Concentration (fibers> 5u/cc air) Sample Time (min) -- - it'~lV ; C. yJ ^ i i \ Total Air Volume (1) Mechanical 1 <0.05 3G.D: . 60.0 i: Punching 32 <0.05 <0.05 30.0 30.0 ** 60.0 60.0 r4 <0.05 ' 5 <0.05 6 <0.05 7 <0.05 .30.0 30.0 30.0 30.0 60.0 60.0 60.0 60.0 8 <0.05 30.0 60.0 n x = <0.05 NSN i. 5330-00-880-"4032 r 5330-_Q0-585-9502 5330-00-942- 4727 5330- 00-942- 4728 c n c o 58 SECTION IV: Machine Punching Operation Sample No. Machine Punching No. Controls 1 Airborne Asbestos Fiber Concentration (fibers > 5n/cc air)____ 5.00 Machine Punching Housekeeping 1 (no ventilation) ' 2 3 4 5 6 7 8 9 10 11 12 <0.03 <0.03 0.15 0.16 0.43 0.15 0.71 0:22 0.32 0.04 0.03 0.06 x = 0.19 Machine Punching Ventilation 1 2 3 4. 5 6 7 8 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.06 <0.06 x = <0.05 * Data unavailable NSN I I 5330-00-268-9880 5330-00-585-9501 Sample Time (min) ** 'J ' i Total Air Volume (1) * i~ 27.4 27.7 30.0 27.9 26.4 30.0 . 20.4 - 20.6 28.6 30.9 27.1 26.4 54.8 55.3 60.0 55.8 52.8 60.0 40.8 41.2 57.2 61.7 54.3 52.8 30.5 26.6 28.8 29.5 28.5 28.7 23.7 22.9 61.0 53.2 57.5 59.0 57.0 57.4 47.4 45.7 59 SECTION V: Operation Hand Shaping Sample No'. Hand Shaping No Controls 1 2 3 4 5 6 7 8 9 10 Airborne Asbestos Fiber Concentration (fibers> 5n/cc air) 0.25 0.06 0.30 0.23 <0.03 0.08 <0.03 0.07 <0.09 0.13 x = 0.13 Sample Time Total Air (min) n. Volume (1) '` i 27.'8 ^ 30.0 30.0 30.0 31.1 31.0 31.0 .31.0 7.0 7.0 55.6 60.0 60.0 60.0 62.2 62.0 62.0 62.0 19.6. 14.0 NSN 5330-00-2 68-9880; 60 SECTION VI: Machine Shearing Operation Sample No. Machine Shearing No Controls 1 2 Airborne Asbests Fiber Concertration (fibers > 5/cc air) 1.30 0.46 x = 0.88 .Sample Time Total Air (min). Volume (1) . ' ; .. Ct v/ t.; \m. 6.0 . > 6:d '~g 16.8 12.0 Machin Shearing with Housekeeping 1 2 3 4 5 6 0.05 0.05 0.06 0.05 0.15 0.05 x - 0.07 36.3 35.4 38.0 31.3 30.6 -34.0 72.6 70.9 76.0 62.7 61.2 68.0 NSN 5330-00-268-9880j 61 I SECTION VII: Machine Nibbling Operation Sample No Airborne Asbestos Fiber Concentration (fibers> 5u/cc air) Machine Nibbling No Controls 1 2 <0.08 0.46 x = 0.27 Machine Nibbling with Housekeeping . 1 2 3 4 5 6 7 8 0.42 0.09 0.28 0.53 0.35 0.80 0.74 0.13 x - 0.42 NSN ' f 5330-00-268-9880_I 5330-00-285-2071 Sample Time ' Total Air ,, foi'Ayf* f*1 ; Volume (1) ; # 8.0 8.0 22.4 16.0 28.7 25.7 24.1 30.5 26.0 28.8 24.7 27.0 57.4 51.3 48.3 61.0 52.0 57.6 49.3 53.9 62 SECTION VIII: Installation Operation Installation No Controls Sample No. 1 2 3 A Airborne Asbestos Fiber Concentration (fibers y 5u/cc air) <0.03 <0.03 <0.03 <0.03 x = <0.03 Sample Time Total Air (min) Volume (1) <U. T/>ri i{y.j: 30./O r 30. 30.0 30.0 . 60.0 60.0 60.0 60.0 63 SECTION IX: Removal and Concurrent Installation Op er at ion Sample No. Removal and Concurrent Installation with Housekeeping 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Airborne Asbestos Fiber Concentration Cfibers > W c c air) 0.02 <0.03 0.06 0.09 0.09 0.09 0.04 0.12 0.04 <0.03 0.05 0.10 0.11 0.18 0.03 0.03 0.06 0.04' 0.07 0.08 0.04 0.17 0.12 0.13 0.20 0.16 0.05 0.06 0.30 X = 0.09 Sample Time Total Air (min) Volume (1) . i' ^ P:"''1 ; i;.,: 39.9 31.0 31.0 31.0 30.0 20.944.0 30.8 ' 21.2 30.6 31.9 27.0 34.0 25.3 34.0 30.0 44.0 95.0 41.0 23.8 43.7 20.9 30.7 42.1 32.2 34.0 33.9 87.9 27.1 79.7 62.0 62.0 62.0 60.0 41.7 88.0 61.5 42.5 61.1 -- 63.9 54.1 68.0 50.7 68.0 60.0 88.0 190.0 82.0 47.6 87.3 41.7 61.4 84.2 64.4 68.0 ' 67.8 175.9 54.2 . - NSN - 5330-00-862-9391 . _ - ^ . .1 64 E S [ r C; E n c E e E E SECTION X: Clean-up Following Removal Operation Clean-up Following Removal with No Controls Sample No. 1 2 '3 4 Airborne Asbestos Fiber Concentration (fiber > 5u/cc air) <0.05 <0.05 <0.05 <0.05 x = <0.05 Sample Time (min),- f, Total Air Volume (1) . . _ 33.3 36.2 36.0 36.8 66.6 72.4 72.0 73.5 C E E E 65 i SECTION XI. ]Re m o v a i w i t h S i m u l t a n e o u s C l e a n - U p { Operation Sample No. Removal and 1 hand scraping 2 with no controls 3 4 5 6 7 8 9 10 11 12 13 14 Removal and 1 wire brushing 2 with housekeeping.-3- _ 4 5 6: 7 8 Airborne asbestos fiber cone, .S^jjiple time (fibers > 5 m / c c air) ci 0 ; (mirj),,; . 0.12 0.03 0.11 ^ 0.06 0.14 0.05 < 0.06 0.32 0.24 0.13 0.39 0.06 0.07 0.04 X =0.13 i *. 30.10, 30.0~ 25.3 15.7 19.0 16.6 15.4 17.1 22.7 21.0 16.3 28.4. 27.4 25.2 0.18 0.17 0.17 . _ 0.03 0.18 0.03 <0.03 0.07 X =0.11 X =0.12 25.9 26.3 33.0 29.6 25.2 31.1 30.4 27.3 Total a volume 60.0 60.0 50.6 31.3 38.0 33.2 30.9 34.1 45.4 42.0 32.6 56.9 54.8 50.3 51.8 52.7 66.0 59,2 50.5 62.2 60.8 54.6 66 SECTION XII: CONT'D r c g c c D 0 C ( Operation Sample No. Fibers/cc Cutting eighteen 9" x 1/4" strips with snips. Clean-up waste removed. Seventy eight 9/16" holes hand punched. Five circles cut with hand gasket cutter. 1 0.08 2 0.15 X = 0.11 Above samples taken using NSN 5330-00-942-4728 Employee looking 1 through cabinet^ & opening bags containing gaskets <0.01 Storage area background 1 < 0.01 2 <0.01 3 <0.01 - X =<0.01 Two 12" x 12" and 1 eighteen 3" x 5" 2 gaskets removed from ventilation duct heaters. 0.05 0.24 X = 0.14 Nine 3" x 5" gaskets 1 removed from ventilation 2 duct heaters. Loose. material cleaned up. 0.65 0.77 X = 0.71 Sample Time (min) Total Air Volume (1) 10.5 1I1 l^ ^ i ; 10.5 -* * 17.9 ' 17.9 - . 15 . 124 124 124 49.9 49.9 23.7 23.7 - 25.5 210.8 210.8 210.8 84.8 ; 84.8 5 40.3 40.3 l 67 Cont'd SECTION XII; Miscellaneous and Multiple Operations - (Bata-from.-NRMC_Oaklan.<l) ;___:____ ! Operation Hand Cutting & Punching Sample No. 1 2 Fibers/cc 0.2 _ 0.3 X = 0.25 Sample Total Air Volume imin<X 'J > i s l i H _______ 5.3 ; ", 5.3 *8.9 Hand Cutting 1 0.2 5.2 8.8 Cutting with shear, 1 punching on punch 2 press, cutting with circle shear, hand__ punching <0.5 _ <0.5 X =<0.05 19.4 17.8 33.0 30.3 Cutting with Beverly 1 hand shear & Widemann hand punch 0.2 15.0 "25.5 Background Clean-up 1 around above shear 1.2 20 - 34.0 Cutting 6 inch dia. 1 < 0.01 16 gaskets punching. Ten gaskets cut & 6 holes punched in each. Cut with a compass type ga.sket cutter with a razor blade cutting ' edge. Punched with hand operated mechanical punch 27.2 re-stamping hole punching 1 Pre-punching done with hammers dip. Incomplete clean-up of scrap 1.67 15 25.5 " Cutting 14 six-inch 1 six hole gaskets 2 0.13 _ 0.24 X =0.19 61 35.3 103.7 60.0 Cutting 9/16 inch bolt 1 holes by pre-punching with hammer die mechanical hand punch Shearing (10 cuts) 1 4" x -22" strips ..on . Cincinnati Auto Shear. Punching thirty-five 3-7/7" holes on a punch press. Cutting 9 gaskets on a cutting press 0.28 0.01 26 12.5 67 44.2 21.3