Document v6ekK8143VNxnaeM1BkDG7rG9

* r. ' C* '">*> /* ~/SZ_ E. 1. du Pont ce Nemours 5L Company Wilmington, Delaware FABRICS & FINISHES DEPARTMENT RESEARCH & DEVELOPMENT DIVISION September 19, 1972 C. F. REINHARDT HASKELL LAB. ASBESTOS IN PAINT FILMS As you know, we are concerned about possible potential hazards associated with asbestos contained in talc used in some of our paints. We plan to conduct a test in which airborne asbestos measurements will be made in the breathing zone of an operator while sanding a typical primer. We have inquired and found that Haskell Lab has no data in its files on hazards of asbestos fiber that is bound cr encapsulated in paints. We would now like to have Haskell conduct a brief literature search to see what pertinent infor mation may be readily available. This need not be an exhaustive search. Joe Kowalski feels that perhaps it could be accomplished in about 4 hours. Completion by October 2 would be most appreciated. /Z. 'ti &- EES:lhw TOXICITY COORDINATOR V' F * F MEANS DUP I Ml 170 DU 058658 cc. ' r `*w; P. T. Hart E. I. du Pont de Nemours & Company n.04at't i SECE^A.y S CffiUTMENT INPQS * T ION jtsrEMg Ci V t SION September 21, 1972 RUTH RE1NKE EMPLOYEE RELATIONS HASKELL LABORATORY PAINTS WHICH UTILIZE TALC AND ASBESTOS AND MANUFACTURERS OF SAME (PI - 1071) Talc and asbestos are both used as extenders by paint mcnufacturers and description of the magnitude of use can be obtained from the selected pages of the 1967 Skeist Lab oratories Report cn Coatings. Talc is more commonly used than asbestos and in the classified list of Paint and Coatings Products (Point Red Book - 19711 p. 116 ais aesignated as f11 in group A, All paint manufacturers showing *11 presumably use asbestos extenders but in the four or five I looked at in the address list on p. 11 none delineated an asbestos paint per se but all showed asphaltic paints which seems to confirm the roof coatings use touched upon by _ Skeist. The suppliers of talc to the paint industry are shown on p. 274 of the Red Book, and seme aaditional information on its use can be obtained in Voi. 6 of the Paint Technology Manuals chcrced to you from the Du Pont Technical Library along with the Red Book. These should be returned to them. We trust this material will be sufficient for you to handle your inquiry but if we can be of further help let me know. COMMERCIAL IbfEORMATION CENTER JD:bs Enel. i better Things ran BC"C LIVING . . Through Chemist**' ha'- 'r j_ DUP 1 141171 DU 058659 TylAICI'Y T A: ID CONTROL DU3T EXPOSURE >3 - 5" v SAFErr ENGIN'.E 't;*?* SIANDthD SUCO THIS Msc bCVKfO S4T Pone 1 ol S ' Occupoticnol Srfoly end I hiulth Act of 1970 (Q3h!AJ a* puhiieHcd in tha Foderol Rapister. 1. SCOPE Z4 Centre! met,to"'s, such ns hut not liniijrd to. rnrl.*- ! z 10 2 0 Th:s standard prison:* the prrmi'siiiie exposure limits lo l*trn dii*:, ger.-ual information on methods sure, vacuum sweeping, anil locul exhaust vr.nil.ttiun, shall lie U'eil to inert the permissible exposu-e limit*. e teciion 3, j k 0 of control!--!;; asbestos dust exposures, ui..i describes an * acceptable method of sampling asbestos dust concentra Z5 Roxeirtrtoey protaciiva dsvicas, chnl! be provided I tions in the work area. and used whrre such control methods are not feasible.' | or do r.o: ctherwisc reduce th; concenTriinn* ,-lnw the {i Z CENcRAl permissible exposure limiis.jsee section 4. j 0i i Zl Ashcrtnsis and long ecmear have ten" been e.rsoei- Z6 Hyptano requirements are included in sect on 5. | V sled with exposure to itj'ir*tos. riistoriciii/. the incidence <I *2 r,f these diseases has b-rn signi.'snntly M-ber emong Z7 Sampling. For sampling equipment, mon-toring. 1 5 asbestos workers than among the jenrr.nl papuiatirn, 1 analysis record keeping, and warning s gns, see ! 0S section 6. j ?,* 2r 2.2 Principe.! sources of exposure to aitborne asbestos | i jc?. wO3 dint in Ccrnpnny operations have been: -0 , Z3 NonatV:sl33 bearing mulnrielt should h *ubsli- ! i tuted where asbestos contribui-o lo a duct con-r.nra'ion*- z2 ? a. Cutting insulation by power saws in fabrication shops exceeding the permissible exposure limits. 5: o* 3. CO.Mli.'OL OF ASCCSICS DUfl. j I i b. Opening boxes and removal of new insuiction "z u0 3.1 Kandii.-vj Asbestos Insulcnion o 5 e. Rrmoving old iirulstion from lines and vcjseia 3.1.1 Cartons of block insulation are a poten'inl d. Mixing asbestos to form cement source of severe oust exposure and should hr handled , k0 0z a. Removal of clothing after completing insulating with care. The rough, abrasive nature of the bloc!: male- ! * V duties rial cremes dust within the cartons. Hz -l 0kc f. Culling asbestos shingles. Transits, etc 3.1.2 Cartons of new insulation should hr vacu umed upon opening, and prior to rtmovcl cf blocks, 51 g. Spraying insulation or fireproofing to remove dust. To i h. A*bcstos materials used in production of Com pany products 3.1.3 Asbestos blocks must be handled with care at oil timet to minimize dusting. "i 50 i . ZS Pcimirsiblo Exposura Limiit. Asbestos dust cor.cen-1 3.1.4 Purchase of block insuiaiion with a glare ] (rations in nir shall not exceed an it-hour ti.-.is-weipiilcd i coating is recommended. This maxes it virtually du*t I average (TWA) o: 5 fibv* longer than 5 microns per free for handling purposes. ut-i runic centimeter (ce) of air. At no time tr.ey the concen O z tration exceed a ceiling of 10 fibers longer than 3 microns 3.2 Atbotios Culling Ops rations per or. 3.2.? All h.tnd-opcratc.l or power-operrtn; tool* i | 2.3.1 The 0-hour l:me-wei;-:ii'-ar average (TWA) which mnv produce or release r.*hcslo* fibers in rvr.-* is the overage concentration oecurini over a iieried of of the pe. miscible exposure limit* shrill be prnvhh-il m !i 0 contimiom hours. a dost ci'ilirtton system, cee 3.6. 2.3.2 After July I. 1970, the T7VA is rrduced from j 3.Z2 AM major power-cutting mnch-'r.es rlimild be 5 to 2 f! srs lon-rer than 3 mic.-on* *- .- rr I i.-olated in n *.-pnrote working area. Portion^ printed_ln fed r--f C5HA rsj-olailnrfj S--eyjr.iiJ0IO. V*nd0Ft Cr.J t 4`ChAA^I I fi#t mciu.f? .ill pte . ; f'k'wlff. rtN pptpvjl sf i!u o-'t; e> ;ivgi U`9 mj*vri| end *iy j . f titif Ip Mt V-y f v , i Afi to l>* l tft ^so o# H)i$ tou^-zra. / UDCOMMITTr DUP 1 Ml 172 DU 058660 d `xtsi s . Pro 2 MEASUREMENT AMD CONTROL Of AjECSTOC dust exposure A V 5 <r . i 3X3 1 hr \*<>tk nrr** hall hr.\r h \Jtruunt plrnni'fi ' This ta'i hr n *\Mrm of how crnnreirH Ic a vacuum Al* part* of thr room rnu*t hn\r b. No bypass devires c. No leakage of unfilterrd air cii>iiy \ ncuom cleanup of Irdpr*, ahrlvr*, H^or*, and machine*. ^CAUTION: No dry twaoping shod bo performed. Air [ d. Ability to empty hoppers without Treating visible emissions of particulate mntlrr 'ho`^i not to hr tird i< on aid in cleanup. ( | I a. No torn or ruptured hag* 3.3 Aibastot-Camsnt Wring | f. No worn or lhr*sdbare baps > 3.3.1 Asbrsto* cement, mortar. rooting*, grout,and J jplasicr shall le mixrt) in rlosed bap* nr olhrr comainrm. | g. No improperly positioned bags 4. RESPIRATORY EQUIPMENT 3.3.2 Any drird-eut ctmtnl should be discarded. Do not altrmp to rework it. 3.4 Remove! of Asbestos Insulation 3.4.1 fnulntiou to be removed and discarded should he dampened prior to and during removal whenever possible. 3.4.2 Employers engaged in dismantling asbestos insulation shall wear alino-piiere supplying respirators, ee 1.1.1.________________________________ 3.4.2.1 The removal of insulation. fabricated and pr ed to withstand repeated remove! and rcinslulI, f'.r rquipmrnt m.-iintenanre or other reasons, is 1 not considered "dismantling." 3.4.3 Scrap insulation shall be emlected and diejmsrd of in labeled in.d sealed buns or inner container* and shall follow plunt and local government regulations. For caution lahrls. see 6.0. 4.1 Respiratory protection shall be provided In all' personnel in areas where the permissible exposure limits' may be exceeded.)liefer to f2il for general description of 1 equipment. 4.1.1 sUnsosphara supplying raspirotors (Tv pe "C" supplied-air or self-contained). Bureau of V'no Schedule 19H. will provide complete oroleetior.lThev are reomred for dismantling and spraying asbestos, nr when the', concentration exceeds 10 times the TWA or eeiiing limit j of 2.3. I 4.1.2 Mochonicoi *iltar-!yp# raspiretort, Bureau of Mines Schedule 21B, will afford adequate protection in lower concentration cases, and where ambient nwren does not fall below 18 percent,iThey are required when' the concenti alion is between i and 10 times the TW-\I ceiling limit of 2.3.1 Manufacturers recommendations for their application and maintenance must be followed. 3.5 Asbestos Spraying. Employees eni.iiyeti in spraying asbestos for insulation or fireproafing shall wear atmo*. phere supplying respirator*..see 4.1.1. 3.6 Exhaust vwr.tilatioo onu dust collection system shivlt be in accordance with ANSI Z*.2, Fundamentals Gov erning the Design and Operation of Local Exhetist Sjsjrms._____ ________________________________________ 3.6.1 Caps or dampen should be provided in rich intake ho*e and tnuehine connection to maintain 1 capacity of tie? system. However, cere should be taken to assure that eonoevtion* are open nt thr equipment being npi-raicd. 3.6.2 Discharge should be into Scg niter* which meet the following erilcria: a. finl'rn bag fiber having air (low (lerntrahiliiy m>.. weeding 2t) rfnv^eq ft 4.2 Each employee shall lie instructed in testing rrspira-. lory devices for proper fit and be required to do so prior, to each use. _________________ I 5. HYGIENE 5.1 Respirators and masks must be krpl eiran ami' sterilized prior to reissue. i 5.2 Special clothing, a change room, and duplicate lockers must he provided for employees exposed to ron- | centratioijs which exceed the ceiling limit of 2.3. This is to prevent contamination of employees" street clothe* from , their work rlo'bes. ' 5.3 Food, gum, tnbarro, or other material placed in the mouth should not he kept nr rnnsumed in work areas. [psffisos p, lots J In ltd .newt CSHA i#eutjHe, ksitto.v t ? I 0.92o | r-T DUP 1141173 DU 058661 & MSASinrMFNT AND CONT.'OL OF AStrSTOS DUST CX'OtUr.c saT J Pan# I ~\ g. SAMPLING I 6.1 Monitoring. Samplm:: of null nprrminn must l>r for .il least l.i minutes duration unci token in n ftrqurnev , 1 miff pattern In cruralrl, rrprr'eut the rmiiimr.' * ex* po.irr n,rr hi work prtind. If results inrl elite n level ' of nhrMns dust in .-xrrrss of th limit, tlir nprrnlion j should |ir reviewed tn rrilurr exposure. sec 2.1, nod | rr*ntnpled. Ihe initial samplina ptogritm must determine j tlir R-hmir linir weighted average. Intervals between I sample* slinll not rxrrrd i\ (6) monlliv 6.2 Equipmant. Sample* mny be taken with a portnble bottrr\-o|>eraird a!r sampler altcehcd to an employee's bell or placed in thr work area. 6.3.2 Clip filler InMrr In litpel nr shirt pork el a. rlose ns possible to the person'' mnull. This method ,.f personnel nm|>liti|: i- preferred. 6.3.3 If a sampler is aftixed permanent!, m a tvmk area, suspend the filer as close as poss.hh to the person's breathing rone til (He jolt to he monitored 6.3.4 Remove top section of the filter to expose the full filler face. 6.3.5 Turn on pump and set at approximate!, two (2) liters per minute rale. Check rate periodically When finished sampling, turn off pttn.p and record , elnpsed sampling time. Sampling record forms. EN--2731 (see Kigltre 3) are available from Stationer, 1 Stores, Eng Dept, Wilmington, Del. i I | CALiTION: Sample* may not he collected in hazardous area*, a* defined in DFID, without * permit to use apatk producing device. 6.3.6 Replace filter top after sample is collected ami seal with tope prior to shipment. 6.2.1 Pump Mirronnirr or Model Cl IS Bendix Corp Environmental Science Division Tow son, Md 2120 r or 6.4 Analysis. Completed samples (exposed filters! are placed in a mailing tube, sealed, and sent to a qualified | laboratory with two copies of the sampling rmrd. In clude an unexposed fiber wish the sample which rta* h.-en handled in the same fashion without drawing air Ihroucn l it. Qualified laboratory information is avttilohle fro.n Haskell laboratory. j Gravimetric or Monitaire Mine Safety Appliances Co i 230 N. Rraddock Ave Pittsburgh, Pennsylvania 15200 _' i Either unit must include battery charger and battery; carrying case is optional. 6.12 Filt.r 1 Millipore No. M AM P-037--AO filler, ' while, nongridded. t 0.8 miero:t porc""j Millipore Corporation Bedford, Massaehusetts 01730 6.3 Frocadwra 6.3.1 flow through tite pump should be calibrated, with the Glter in line for each pump. 6.4 1 All determinations shall he n ode t, me nmm- > brane filter method at I0rt-- 15!)\(magnifim'iont (-km.o , objective) with phase contrast illumination. jj tI 6.5 Racord Koaping. Record* of personnel and environ- 1 i mental monilorine hnlt be maintained for tnrre (it ; and made available upon the request of nulhnrtreu rrpre. aenlatives of OSHA and NIOSH (.\nttonai Insiituie of; Occupational Safely and Health). , 6.6 Warning signs conforming to Figure 1 shall he posted ct all appto&chcs to arras where asbestos concern trations may be above permissible exposure limits r.t a sufficient distance to permit an employee to rend inr *.gn j i ! and take necessary precautions before entering the ere.. 1 Caution labels conform,ng to Figure 2 shall nc ,,seu . > J identify containers of raw materials, scrap, vr.te. r.tnrr j products containing asbestos, and asbestos co.uair.inniru | clothing. I l FoMioos stinted in r,d rrt OSHA raeu'arlont, Sre*ien 1010.938. DUP 1141174 I DU 058662 Al e-- 4 EH t-HASur; T 0" a<cf.:*iCs : n C'.'T Vtllow Ititer] en block bockg'aund Block totters on ytlluw bock ground Lottor sites end stylet to be o* (ton Ot visible os thot Cstod btiow: 1 Sons Serii, Gothic, or C-oe* -- Sons Serif, Gofhie, or Clock Gothic Speclr.p to bo ot loost eqvol to tho height of tho upper of ony two lities \Pr \* - 2" i' - P * ASBESTOS ^^DUST HAZARD Avoid hrcothing dust Vpor o*z gned protective tquipr*ent On not tsmoin in er* unless you* v ek requires It Breathing ctbestot dust ney bo haic'douo to your Melth FIGURE 1 - CAUTION SIGN - /.SOE^TOS OUST / '/ ^7 S4T, p 4 CAUTION Contoins eshcetos fiber* Avoid creating dust Beething esbsstes dust y e.oote se'ieus bodily kens Lobel sire ond printing to bo roodlly visible one legible. FIGURE 2 - TYTICAU CAUTiGH IA3SL 1 ond i moot OSIIA requirement a, Section 1910.I ( DUP 1141175 + DU 058663 Ji __M-59;-:aja; :..---.-i--B.:..r-;if T.J.. --.nflBaBL MEa:U"*!\LKT a:.D CCNTSCL oh /.sr.ciTos pulv expccure , E. I. DU PCNT DE NEVCURS & CO.-CONSTRUCTION DIVISION AIKCOT-.T DUST SV.VIC WCT.K SHEET SITE: ___ ________________ WEATHER______________ INSTRUMENT NUM3ERSAMPLE TOTAL TIME __________________________ DATE SAMPLED: TEMP.:R.H.:_ _________________________WORK LOCATION:. ______________ HRS. VOL. SAMPLED'______ 1. PUMP RATECC/M TIME:CHECKED BY: SPECIFIC PRODUCT AND MATERIAL: OPERATION- VENTILATING CONTROL DRAFTS: 2. PUMP rate CC'M TIMECHECKED BY: SPECIFIC PRODUCT AND MATERIAL. OPERATION: VENTILATING CONTROL. _ ORAFTS; 3. PUMP RATECC/M TiME:CHECKED BY: SPECIFIC PRODUCT AND .MATERIAL: OPERATION VENTILATING CONTROL: DRAFTS: 4. PUMP RATE-CC/MTIME:CHECKEO BY:! SPECIFIC PRODLCT ANDMATERIAL: OPERATION VENTILATING CONTROL. . DRAFTS. . 5. PUMP RATECC/M TIME:CHECKED BY:. 6. PUMP RATE- CC/M TIME:CHECKED BY:. SPECIFIC PRODUCT AND MATERIAL: OPERATlOf:. VENTILATING CONTROL: DRAFTS: 7. PUMP RATECC/V TIME:CHECKED BY: SPECIFIC PRODUCT AND MATERIAL: OPERATION; VENTILATING CONTROL: DRAFTS: 8. PUMP RATE:CC/M TIME:CHECKED BY: SPECIFIC PRODUCT AND MATERIAL: OPERATION: VENTILATING CONTROL. ORAFTS: 9. PUMP RATE CC/M TIME:CHECKED BY: SAMPLE TAKEN BY:DATE: ttCNATunC FIGURE 3 - TYPICAL SAMPLING RECORD FORM DUP 1 Ml 176 I I . I DU 058664