Document DDbbRDr8zmGmgVwGEeZpXgo34

FILE NAME: RT Vanderbilt (RTV) DATE: 1978-1980 DOC#: RTV128 DOCUMENT DESCRIPTION: Memos by Navy & Johns-Manville  x/hV :'H' .' ''s ) ' -- "Q W Jfiy 5 : #" 5*; I * * * . T-T?} */* r r ** *-* jif t .-rtu'yjrKr ifT fr*?. V U * < f ** h D "* D n v*. M kV lo T Nsvsi - . ; > , - Wv F v o*uv*<**CA.yr U n c la s s ifie d * ***-.< **.*! W 185-S e r AG6 /5100 j:*i s o iso i. C om ender lisv&l Ses. Systems Cornar.! (5EA CTjC) Uashington, D. G, 20362 M not Ctvmmm** C0 -*V'JA-CA` c; INSTRUCTIONS 1. 24< * u | Tfr# |hrv>c'v-T <vrCiMW< i tHn-ww A.---', b ar?<^3rti: f - w.r..'1 Art**b?f**'* boi* t T i t i . - * 'hru hr*n U># r . u * 9 junta lr mi&fw .viflor *Jdrv S- 6* pemtf tujm** Avoid .'4 *t.-s cm:nMA 4. f**rHvw?vv^jw*:*fc^if.|irrvd-{*:.-.; jfci*, I'J'OCHl Iftifr *M*.+yf, i,fX\' WJA. m-e'-p*. u frv.^.-d f-.r *.*. v^-iVtiMv vfw** bu;* u iwwtieWi.ibiOU!ru-tti,intdroulli*'*v**>*fo;huiwi'l*bs:(..-k- vj * hafiOfUiorotfrvVKid-MK. ?ak> u m h **i v o c i l o , >* *** v*r * FOR OFFICIAL C3S CEUX , SubJ : Rerlev of reoeolite Talc containine asbestos fibers on Kare Island Tiaral Shipyard * ' Ref: (a) FZSSCZ' between S. D. Patterson, SEA 0730, and A. E. Lsvequa, Code 1&5, UAVSHIFXBKAHE, of 7 June 1978 (b) FOXECOU between R. D. Patterson, SEA 0730, and A. 5. Leveque, Code l5, RAVSHEPXEIAEE, Of 16 June I97S Enel: il) Report X KViW Of olc cu 1.X1J SJcStifOru, Uuu on thu'e Island Havel Shipyard (2) Field Information Keno 71=7^-92, 0. S. Department of Labor, 0SEA 1. Luring a telephone conversation (reference a), Mare Island Safety Office reported that through microscopic evaluation, Talc used in production facilitating processes appeared to contain asbestos fibers. Irj a telephone conversation (ref erence b), the Safety Director, Kars Island tiaval Shipyard, reported the findings and actions taken to KAVSEA. Enclosure (l) is results of the survey ar.d enclosure (2). is background information pertaining to'Trerclite 'and ssuc-stifcria requirements, 2 . A ctions taken. a. A hold vas pieced on all Tala used in production facilitating processes to determine possible asbentifora ccuts-uiration. ** TS A H lix fs l Shipyards H K H D (Code 55) HAVEKA Ou? Ccraander . tiare Island Uayal Shipyard Y a lle jo , C aliforn ia 9U592 ?lji /-S''* c /<f^v, **-- A 0 D H L S S P C L Y AS f5- SM O .V N A T l ? -T O 5? PL.Y H c R I O N A X Q K t I U r M i w , / x Ch Unclassified ------ -------- ---- FOR 0TICIA2, USE CULT ... / CT^MC-HT-TALC-0002' |SUT0020 J! , -<Av- !- f M ": 3 ' * T MEMORANDUM From: To: Code 185 Code 500 Subj: Tremolite Talc Containing Asbestos Fibers' Enel? {1} Naval Spdltr from Commander, Mare Island Nava) Shipyard, o Commander, Naval Sea Systems Command of 20 Jun 1978 1, Enclosure (1) identified' subject in use at Mare Island Naval Shipya and procedures taken to reclaim talc containing asbestos fibers for dis posal -while substituting hon-asbestos talc. 2. Request search of procurement documents and/or inventory lists to locate subject in supply points (Shop Stores) at Philadelphia. Naval Shipyard. 3'. Notify Code 185 of stocking locations NLT 20 July 1978. Copy; to: Code ii jh%*.5* ^ 300 : CRMC-HT-TALC-000262 L^BonATonr test r e o .est `tp JMS 4730/19 (REV. ' " ^ . ^^wil|S;/t|]E 1e8 iSO&fOr 64* MO. . 8 9 2 [7%: n n uswwiu na. coo !w31 rn MATA T5S A S, c o ta >3T3 Q tAXrOKCMKT !A5,COO J4. '' CJM1 SHf/Touif.'nn , _ '.2oj ? s >~ prfOiiK. QKQ HQUlSfHO. ,__ ^ . nr o?. LO; WO. & J UCIHCa TiOM/KAN r m /A u & Y _<m / / COWB co;s*a f &!XU*N NO. G**0''OSFJ'Z. C L A Si W c j f K i < ~ & h M ? ' r CrJ/lly?,/ p u 'b e * / * M > V CHEMICAL J^ j"'CQW*OW<C5 TO CTMS i j f fC-MWCiTiiSM AS 1 ^ o J ------------- ------------- :-- T(Ti>iC INSTSUCLONB fw w . T -S n is, OLBL rt&. C H I) METALLURGICAL & PHYSICAL I 1 TWSiON 1 C Z 3 Mcac| jo m a I I HMONSS . 1 AtttfSS i I -------- .-------------M ---- 1-------- . _ . ho Of TSJW4A4M.E5 AunsviSo -i"CrNfyjf y ^ -T T v ^ -- .____ aSCXa I O T U M O M IT y V c ; C V o A * ^ oL&ie.itt ^fosiim Of SAJunii {X7 N O A S S Q erusM to kncks 0/3 7 /T?t5 V > c > <Ar ^ U8.23 1978 . -^ 4 ' ;. ; c ,,//> - ': ^? A A Tf/mT*>Al09 E3^ ?w u iffiV*<isav'e'sig3>aVW;9&.l&'a-vW.'-lPWPVLft*Ws^TEr- /r,J4* ?L LEW tsrHS" CRMC-HT-TALC-000275 , 0SD2/6101C/JJ7 * . 9631 . ' , Sr 55 From: fas Comssdar, Kwal Systems tm m m A Cogaaodes M w Irisad Heval Shifiyardi -3 0 HAY ? ' . ;; / w .'r * * Sobjt Asbestos Cootnt of Magnaslam Silicas Sss Masarais Deed in Mastsfaetor of M3L-P-24441 Epoxy Coatings . v'-\v"' *. y .1 tefs (a) .K&VSEC Projeet Order H6519779?090020 ' . ' i.',-.''. 1 Is a requested that Mara Island Ifes^sl Shipyard (MPSKXPYD Mara) 'evaluate magnesia ailieate fro: . * * t. . ... * > &. Voedssbllt Go- (Kytai 300) ' \ ;. - > >, ' > Pfis? Co, Minarais 6 Pigments (CP 20-30) ' ' Cyprus Mstica Bm@st Hierais Tale Co- (139) ' ' (By-Fist 80) * :'*? to dotezml&e asbestos fiber content. . 2. 'Although tremofca is the >&jo? miser! fiber in asbossoa, other min- .ral fiber ar chrysolite* aaaosit erocidelite*. antboplylite and actiao- 2$e. These fibers ara to h a identified la sad. if present, reported long ith tramollte.' ' 3- The magnesiasa silicas pigments of paragraph m o (1) shall also be physically and. efamicslly.. la particular oil absorption should bo determined and compared to ids material used to make reformulated Mn"lV24441 materials &> Pfisar Cp 20-30 magnesium silicate, effort is w ith in th seop fending o f 'refera*'(a). Blind copy to: mVSEA 05D23/6101E 534/6159C 921TH3 Prepared by: John J. Tock/05D2l/6101C/20214 Typed by: L. Saadejo Hager/24 May 1979 '! f B 109398 CRMC-HT-TALC-000156 '** *v #.C /..ri .. _f* up; ' \'j \ < '!!i'iS'f*,.tnviie ' .lit"' / j / A? Omarino- / d. Kot ~ , M.O. Internai Correspondence Ciw June 21, 19"79 f - -that fcho1Kar/ dedicai .Ocrdrtnon.t has * *Vv use'rf1Pcudrasc in tiv.j of .%r.ru :> in r.er.hors of the Navel frrccs.' There csr**:ntia3v .1nconr.i* between the t-Vtcrer.* v f r, Kinnfev ar.d the rta.it of the I ,* \ s*. e. :. ' .studier c: virtually ail talcs have ,'J f:Vr>uc 'tresvdlite 'as a varysr.r.percentage of ,:-5 si .:.-hid. This fibrous ecruoncr.t, when of :O'.'?ic-r.s ar.a cese, has Peer. shown to ;v r 'he 1esyr.In ar.ir.al studies. Cf icavediate i 4 he rroent putliCatien 1.i* :,i-4\1 "Kaltenant Ko re Churp, vrarnock li'or.a Arising after 07 cf.Asbestos and ill* s i ? a case cf re : ? \'C r-:card ?u r reporte !_r"Y*3 n;; ;v, had beer, treat ,<* 1'w ; 'r'cnrcial eavit; ior.a, apparently r-atient -who, angina pectoris a mixture of ? 1 ;. a !*liv cf course.is not r 1, V ` about 'which the-re iy t rathef'.-the .Inch ?.. \*.:.*.i-il of. these ftbe. V r v.w;1 and th-r two dec. voluminous body .iversai awarerreduce disease 1 * y r. . CRMC-HT-TALC-000213 *}?- heft-' ira DEPARTMENT OF THE NAVY MARK ISLAND NAVAL SHIPYARD VALLEJO. . c. CALI-IFORNIA 4382 , , . From: Commander, Hare Island Naval Shipyard To; " Commander, Naval Sea Systems Command (05D21) SN Rn.7 SI'S TO: I3A.1 9632, 1330 Subj: Asbestos content of talc suitable for use in MIL-P-24441 paint Kef; (a) NAVSEA Itr 05D2/6101C/JJT 9631 Ser 55 of 30 May 1979 Enel: (!) Project Proposal, Evaluating the Airborne Asbestos Released by . Grinding, Sanding, and Blasting Asbestos Containing. Faints 1. Reference (a) requested Mare Island Naval Shipyard to examine four tal.B for asbestos content and for comparability .to the Pfizer Microtalc CP 20-30 talc used to make reformulated MIL-P-24441 paints. 2. The asbestos content of the talcs was determined by microscopic analy sis using dispersion staining. ; The oil absorptions are based on data reported by the National Paint and Coatings Association and by the talc suppliers. The oil absorptions were determined according to ASTM B-281 which has a reproducibility of + 25%. The results are as follows: Source Oil Absorption Asbestos Content Cyprus Kistron 139 . Slight ..amount of fibrous tremolite in one of two samples. Desert Minerals Talc. Co\ 36 Hi-Fine 80 Pfl2er Microtalc CP 20~3p 29 Large amounts of fibrous tremolife present. Slight amount of fibrous treoolite in one of two .' samples tested. R. !.. Vanderbilt,-Nytal 300 29 Large amounts of fibrous tremollte and a small amount of anthophyllite present,, 3. The airborne dust hazards of asbestos in paint are unknown. "Asbestos fibers that are tightly bound into a .paint should not be a problem. However, when paints are removed by dust, generating methods, such as sanding or abrasive blasting, asbestos fibers could be released. Tried paints are brittle and the shattering action of abrasive removal could break the paint vehicle away from the asbestos and release the fibers. l CRMC-HT-T ALC-000203 Subji Asbestos content of talc suitable for use in MIL-P-2444X paint Talc is.a-common paint ingredient and Is used in a wide variety of paints sold to the Navy. Some talcs are relatively free of asbestos while ethersmay contain from 20 to 60Z asbestos Hence, it is safe to assume that all commissioned ships are coated with asbestos containing paints. The poten tial' for generating airborne asbestos- particles during grinding, sanding, . or abrasive blasting of ships coated vith asbestos containing paints will depend bn the amount of asbestos in thp dried paint being removed. Unfortunately, there is no standard analytical method for measuring the asbestos content of dried paint and the actual amount of airborne asbestos released by surface preparation of such paints is not known. 4. The potential problem of generating airborne asbestos particles during surface preparation can be prevented'by: (a) prohibiting the use of high asbestos content talc in Navy -formula paints end, (b) requiring- the use of Navy formula paints whenever practical. However, this approach will not work for proprietary formulas such as those procured under TX-E-490 C&ilicone-alkyd topside paint). Standard-analytical methods for neasurin the asbestos content of paints do not exist and there is no accepted lint for the asbestos content'of paints. Consequently, there is no way to establish and- enforce practical asbestos limitations for proprietary paints. r t C<4 5. Eased on these observations, it is recommended that? a. The airborne asbestos generated during the surface preparation of high asbestos content paints be investigated. Such an investigation will have tc determine the airborne asbestos dusting harard posed by using dif ferent, surface preparation methods to remove paints of known asbestos content. A major parr, of such a task will be. to develop analytical methods for determining the asbestos content .of vet and dry paints. Enclosure (1) outlines a project to accomplish such a study. b. Approve Kistror/ 135 and Micro-talc CP2030 for use in,MIL-?--24441 paints, , 6. Mare- Island Naval Shipyard has trained personnel'and equipment needed to accomplish the recommended task. However, no technical personnel are available for assignment to the task at this time. The potential airborne asbestos problem associated with asbestos containing paints should be. investigated. Mate Island is willing to support such a project to the fullest extent possible but cannot take the lead on such a task until FY 81. It Is estimated the project can be completed within 12 months for M.'L. PITTMAN By direction 2 CRMC-HT-TALC-000204