Document Gmkeqo3kxaMojgjeJ6228GNB4

UNITED STATES GOVERNMENT Memorandum From: SEC 6153 To: SEC 6101 IN MNkY RCP** TO 6l53?:AIK;IIb Ser 1683 22 September 1969 Oooo Z% U cn Subj: Asbestos; Hazards of fief (a) HATSEC PHELADI7 676A:KA:jed 9390 (FA-287) Ser 1383 of *20 Aug 1969 (b) 101-15091 (c) JOSTD-769 (d) 101-16411 (e) >01-23228 (f) IOC-20079 (g) 101-15349 (h) 101-2781 (1) 10I-2A244 i,,i o io-- 1* We concur in the reeoaaendation of reference (s) with regard to reference (b) material and will take action to delete reference (b) from reference (c) and substitute references (d) and (). 2. Before implementation of the gecomandaticns of reference (a) with regard to piping and machinery insulation by revision of reference (c)9 resolution of the following cements is requested: a* In the matter of removable and reusable covers, I JJB 0022959*~J if we substitute glass felt for asbestos felt, why should we ' ---------- not also substitute glass doth for asbestos cloth? Thi win require evaluation of reference (f) with the current state of the art of glass weaving and revisions to insure acceptable materials which will not cause skin irritation* At present reference (f) baa no definitive requirements for control of fiber quality. According to Johns-tenrille and EJEED there is no known difference between the hazards of chrysotile (weaving fibers) and amosite (felting fibers)* However, The American Acadeny of Occupational medicine: reported In September 1967 that chrysotile disappears mors readily trm, the lungs than other feras. lint or dust from doth may be as hazardous as from felt. This also applies to thermal insulation tape per reference (g) Could not the jacket be glass in lieu of asbestos? b. The above comments also apply to lagging doth. Glass ; doth cannot be ripped as can asbestos but this should cause only : minor problems since it is understood that most lagging doth is ' pro-cut. THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM 837U IT'S FILES. AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES* INC. - I _ul<. nftCUMENT WAS NOT A RECORD OF D*r INBUSTWES INC. DID NOT COME FROM frs RUS AND CANNOT BE AUT HENTIQATED BY PPG INDUSTRIES, INC. 6l53F?AtKsllb Ser 16fi3 22 September 1969 c* All manufacturers use asbestos la the production of reference -(h) arterial and therefore present possible asbestos hazards. Johns-iianrillc has been unsuccessful in attempts to substitute glass in this application due to the deleterious effects of calcium silicate upon glass fibers* - Grades C and P of reference (h) (unitestos) ***** about 0 90 percent asbestos fibers while Grades B, 0 sad 5 contain 10 to 15 percent adbestos* The amount of dust to be expected from __ fabrication or rip-out of these various classes has not, to *rr' the knowledge of the .writer* been documented* If Grade 0 material ^r' o produces 8 or 9.times as such dust as Grade C material* which ; is the more hazardous? -The reccasendation to arbitrarily stop use ox ~ Unibestos based oolely upon asbestos content while calcium silicate SlT s ; usage is continued does not appear to be Justified* Furthermore* Unibestos and several asbestos cloths and felts were found to be . acceptable under the special corrosion and chloride requirements of reference (i) for prevention of stress corrosion cracking of Li- Cl/ C" Austenitic stainless steel* This statement has been documented l O S.I* duPenfdeJIemours at their com expense and by Knowles Atomic Fewer Laboratory for SHIPS 03. To eliminate use of asbestos will require extensive revision of reference (i)* 2* Upon resolution of the above a firm position may be rationally established and maintained independent of bad publicity generated by Dr* Selikofffs statements in the Washington Post and Daily News which apparently did not reflect his true position on the subject* The good doctor has also been quoted as saying "The problem ia a serious one for insulation workers at present* However* 'since we have discovered and defined this risk* it has also become evident that it ean be removed* That la the purpose of this new program* Analysis of the problem made it evident that today's solution is the proper one* Environmental health difficulties are too widespread and too diffuse to be encompassed by any one group* Their cause -- and cure -- require the broad cooperation of industry, labor* scienco and government*" This statement* cade upon receipt of $362*5K for the first year of a 5 year project on industrial health research is not nearly as ^ sensational as the one in the Washington newspapers* T*IT-ry---.---- 22 960 3* Removal of asbestos from the system will in no way lessen the neea ' for protection of respiratory organs from dust resulting from handling insulation* Tho U.S. Public Health Service and the U.S. Coast Guard are no- greatly concerned and apparently plan no action on tho oubjoet. Perhaps the Kavy should lead the vsy. . Wc say get as far with elimination of asbestos as tho Surgeon General got with elimination of cigarette smoking. Congress cay pass & law against deport of asbestos* Copy to: SEC A101C. 5*1 Al?A. fVR A7At. / ** TT TT^VTV'"' ^.*7TV _ L..S371 I TTaVAL CHIP CNGIMLLHINC CENTL'M. PHILADELPHIA DIVISION PHILADELPHIA. PA. 19112 m ***.* mtrtm im C7UHk:Xal , 93V0(F/*-2C7) . * *5or 1554 24 SEP i3S3. Tron; Ofriccr Id CharfC, Naval Ship Engineering Center, Philadelphia Division To: Ccoaander, Naval Ship Engineering* Center Subj: Survey of Hazards of Asbestos;"final report of .K/nSECpniLADIV project FA-257 Ref: (a) 1MSEC ltr 6l01C:EC::m, 9390, Ser 278 of 7 Apr 1969 (b) HAVSECPHELADIV ltr 6764rfll;lal, 9390(FA-287), Ser 6So . .of 24 Apr 1969 (c) 1IAV5ECPHILADIV ltr 6764:HA:lal, 9390( FA-257), Ser 1189 of 30 Jul 1969 * . (d) NA\SECPinLADIV ltr 67645iA;lal', 9390(FA-287), Ser 1273 of 6 Aug 1969 () NATSECPHILADIV ltr 67645iA;lal, 9390(FA-2S7), Ser 1300 r o of 13 Aug 1969 ; * (f) NAT5ECFHILADIV ltr 6764:l&:jy, 9390(FA-2S7), Ser 1417 -Of 26 Aug 1969 (g) NAV3EIFS Tech ilanuel Chapter 9390, Thermal Insulation of Sep 1967 (h) HH-STD-769C (SHITS) of 15 Nov 1967, Thermal Insulating Requirements for liachinery and Piping . *... -. . -l^vReehSToand . > .' y:*.. ' 'w-4'* V * * /4 ' '--'"a. The enormous rise in the production and industrial uses of asbestos during the past 60 years has resulted in a markedly ridened .-v:exposure to asbestos dust for a greatly increased number and variety v lof Yorkers. Same of them, moreover, sustain accidental contacts either ,s-Then being employed in various capacities in operations vhsrc asbestos - \ products are processed, used, orhandlcd, csr then rorking in pleat areas in ehicb an envirmnsental pollution of the air eltb asbestos exists. The harmful effects of such groslng .exposures to asbestos dicing the past tso decades are reflected in an increased water of reports on the occurrence of asbestosls and asbestos eencer (cesothelima) in aj^erletjr of asbestos eorkera from a rising umber of countries. & principal corker groups exposed to respiratory contact with asbestos --. any-employed- in the asbestos-mining end-milling industries, in the production and crsmercial use of asbestos cement and plaster, in the --production and application of asbestos for insulating purposes and in V4 -.3 pm V * way* * feOTOlU ESI C.Htf .___ ____ ` 7'BB~00 22 961.1 i >**j itvo'i THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM ITS FILES AND CANNOT BE AUTHENTICATED BX PPG INDUSTRIES, INC. 1. 5372 ** i * 07IV, :UA;j./LL 93cJ0(K/U2S7) * Sot 15C4 * the processing of nsbntnc and it* manufacture into textiles. Ensuring adequate protection of asbestos workers against occupational health hazards related to respiratory and cutaneous contact is of paramount importance to Government, industry, and the workers themselves. * bj Since individual habits of workmen play a large part in their exposure patterns, observations of their practices have been included in the survey. Most insulation workers are aware that exposure to asbestos dust, even at low concentrations, is hazardous but they also feel that the hazards arc unavoidable and toast be accepted os part of the occupation. Moreover, a recently published survey conducted by a naval shipyard aboard selected ships has revealed that, although dust respirators have been required during installation or ripout of asbestos, 76JS of the workers did not use "hem. In fact 50did not posses respira tors even though they were read .y available at central tool rooms. TM lack of worker discipline und the seriousness of the lung effects of asbestos could be the sain' deciding factors for considering the elimination of asbestos as a lagging material' and as a cement on piping, ducts, a.'nd boilers and thus reduce eventually eradicate the reported incidence of asbestosis ranging up to 2l among shipyard Insulation workers, e. One recent shop and ship time study has revealed that loggers currently occupy 45J* of their uorlring time with asbestos-containing materials. This survey also reported that the individual duties of insulation workers required the following, time allotment: Ci-v O CD O CC C/j i*r/*,_ * * Lu O (X) 10? of the loggers* time involved prefabrication procedures such as the hand or power cutting of 'molded pipe covering or blocks . their shaping to fit the intended area of application. (2) 40$ of the time is spent in the application operation including fitting, hamering into place, carving and/or attaching insulation materials by wire or adhesive. (3) 30? of time is spent on the finishing operation in which Insulating materials are coated with cement, resin, cloth, or .petroleum-based sealers, (4) 10? of the time is spent in tearing out old Insulation prior to re-application. BB 0022962 I 2 THIS DOCUMENT WAS NOT A RF.COaD OF PPG INDUSTRIES, INC. DIO NOV C0./C i-.vUM rrs FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES, INC. 8373 '? 4* J ! ,# 67<V,:MA:lal 9390(FA-287) Ser 1^84 (5) 5JS of the time Is spent in blending varying combinations of cements In buckets, troughs or in automatic mixing machines. (6) General work, occupying % of the time, comprises cleaning tip of old insulation, transporting material and moving equipment. d. In on attempt to improve the insulation program of the Navy, NAVSECPIULADIV, by reference (a), was directed to participate in a survey of the shipyards and the insulation manufacturers so that action can he taken to minimize the health hazards to which insulation workers are exposed. Fulfilling the schedule proposed by reference (b), this activity has completed the suggested study of the practices of shipyards and shipyard insulation workers. Findings of this study are presented herein. 1 * . 2. Shinvard Survey * ft. Letter inquiries addressed to the Naval Shipyards resulted In t^ O -,o o 100? response, whereas those addressed to private shipyards failed to CO 1 ; ; elicit replies from Newport News Shipbuilding and Dryriock Co., and -- Ingalls Shipbuilding Corp. However, General Ityn2ni.es, Lockheed -f- ;~- /p '_4 Shipbuilding and Bath Iron Works responded to our Inquiry. Follow-up personal visits were made to representative Naval and private shipyards LU ^ on the Hast and West Coasts and reports of visits to their installations J have been submitted to 1!A\SEC by references (c) through (f). Discussion . of" B meetings were held with medical directors, industrial hygienists, safety 1 managers, value analysis engineers and pipe-coverer shop foremen. In every instance, it was noted that shipyard personnel management is aware of the hazards attending the use of asbestos insulating materials but does sot exercise an equal degree of care in their elimination. Worker .'organizations have been instrumental in securing some' improvements but their chief interest is in securing J'dirty" or "hazard11 money for Vum/SH-ng these materials. Shipyard safety bulletins to guide the practices of shop workers have been issued at every Navy Installation, although not all of the workers abide by them. However, the workers do submit to semi-annual chest x-rays. The interpretation of the x-ray plates should not be considered lightly since variations in the technique * of taking the film may result in disclosing a greater incidence of * asbestosis than heretofore realized. BUJSD should be consulted in this regard. | BB 0022963 | 'f W.-J-IJ THIS DOCUMENT WAS NOT'A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOT BE AUTHENTICA t ED BY PPG INDUSTRIES, INC. 4 i W*VJ TWilSi . rj*r S374 6Vo/, uiA. :lai r 9390(FA-237) Ser 1584 b. Conversations with industrial hygienist* revealed that although the methods of conducting particulate determinations ore important, there is so )unifoxmlty in the shipyards. It was also noted that the method recomnended by the American Hygiene Association 2ns not been updated since 1942. This procedure, is generally used by the shipyards. The areas of sampling, the method of sampling and the operation and material Involved affect the total dust count reported. It wus also expressed that the techniques of sampling, as veil as the method of counting the par ticles should be standardized for all shipyards. Total dust counts should be reported in addition to the fiber count and fiber size and, if possible identifying these fibers as asbestos. The aider use of a contrast phase microscope would enhance the identification of fibers end male the counting C:_ procedure more meaningful. "t o. The fabricating shops were surveyed and their facilities were O o# --*. evaluated. Generally, exhaust equipment ranged free excellent to fair due o mainly to varying ceiling heights. High ceilings favored the accumulation of overhead dust on rafters end beams. Those shops which had wooden floors required repeated vacuum cleaning and vet sweeping. Cutting and sewing tables equipped with a water supply and local exhaust hoods were CO- U1 :jz o ideal but, unfortunately, not all shops were so equipped. The sawing operation was not always conducted under adequate ventilation. oo d. A study of insulating materials used by the shipyards revealed a vide range of material^ including asbestos, rock wool, cork, elaswomeric . foam, fibrous glass, cellular glass, calcium silicate, magnesia, diaxcxaceous .earth, cotton and cementous agents. The handling practices of these materials by the pipe coverer-insulator varied considerably and In many oases, the worker was his ovn chief enemy. Ee failed' to wear coveralls, respirators, goggles, gloves and use protective skin creams and curxail habits (a practice which is knoon to increase the incidence of asbestosis). Vark practices were observed. One innovation Initiated at one of the shipyards was the of asbestos cement with-water under cover of a closed polyethylene beg to eliminate dusting. All of the shipyards which use amosite asbestos blankets vet them down and enclose-' them In polyethylene bags prior to transportation to the application site and then rewet them with a fine water spray as they are being * reopened for use. . | BB 0022964 | # * rrriv '!JLw i/jaiwi. jj.i.i. THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES. INC. DID NOT COME FROM IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES, U^C. . 1 Mr.- ...... . ' 8375 'e _ 1 l i : . 1- ^ . 6764:UA:lol 9390( FA-287) Ser 1584 e. Shipboard practices on the handling of asbestos-containing materials occasionally shoved failure to isolate working areas, improper ventilation, dusting due to emptying cement bags, failure to vet down insulation preliminary to ripout and disposal in polyethylene bags, and T failure to rear coveralls and properly equipped and approved respirators. Dust counting on board ship during dry ripout operation of amosite revealed a total dust count as high as 24 million parts per cubic foot (eppef). The 1 j present accepted maximum limit for asbestos dust is 2 mppcf for on 3-hour working day. . f. In the observations made of the visited shipyards, reported on by references (c) through (f), it vas indicated that in the fabrication shops, portable covers for flange Joints and irregular surfaces ere r<ri| prepared from grade AA asbestos cloth (SS-C-446) and contain a fiber glass LU fill conforming to LUL-X-16411, type n. As a replacement for the asbestos ~ J doth, one shipyard is satisfactorily using 100? fiber glass lagging, V manufactured by J. P. Stevens, Co. (1HL-C-20079, type I). Aboard the O visited ships at these installations, the following practices vere Oo bserred, as previously reported; o p- (1) Ventilation duets were insulated with unfaced fibrous glass U board (MIL-1-742) and covered with revettable asbestos cloth Fibrous f glass cloth (1HL-C-20079, type I) adhered with lO^-A-3316, class 1, has ^ o been used as a suitable replacement for the asbestos lagging cloth. lli I-- I-- (2) Boiler steam drums, main steam flanges, deaerating feed taste, O o water heaters and main propulsion turbines are insulated with asbestos s. felt (smosite) ML-I-15G91, type A, plain. To eliminate this material for this use, calcium silicate insulating blocte (1QX-I-2S19, dess 2) have "j been satisfactorily used for applications up to 1000 F. They ere applied 1 es two, 2-inch thicknesses covered by 1-inch open mesh wire and..coated with magnesia cement (SS-C-160, type I) or mineral wool cement (SS-C-160, type XU,* grade f) and finally lagged with fiber glass doth (IG3/-C-20079, . type I). (3) For -.insulating hot piping up to 1200 F molded or preformed fibrous asbestos sections (1HL-I-27S1, grade UX, class f) have been -*rplaced in some instances by calcium silicate (molded) sections OOL-X-2781, grade XXX, dass ). 5. | DB 0022965 | tHl3 DOCUMENf WAS NOT A RECORD OF bprt INDUSTRIES, INC; DID NOT COME FROM Files and cannot be authenticated iv *><| industries. INC.__ __. >1 W'.'V 8376 rr. - \ .1 i :j i : < i !. . i J 1i i 6764:UArial 9390(FA-257) Scr 1584 (4j For ctress relicvlnc procedures on welded pipe Joints and shafts, Johns-Manville, Cerafelt, refractory fiber felt (LTL-1-23123, grade B), io being used to replace aaositc asbestos felt (MIL-I-15091, type A, plain). The temperature of the encased heating element in these applications ranges up to 2300 F. * (5) There elastomeric foam is used es antisweat insulation on .fire mains, and cold piping, a covering of 3 iiieh wide fibrous glass tape or cloth (MIL-&-20079, type I and HI) may be used for sailor-proofing . in place of asbestos cloth or painting, where abuse is a problem. (6) Therever asbestos cement (MIL-C-2903A, type I) has previously been utilized, replacement may be effected*by the use of mineral wool cement (SS-C-160, type XU, grade f). (7) Asbestos millboard (HB-U-331), a highly dust producing material during sawing operations, may be eliminated in the manufacture of removable covers by replacing with fiber glass felt (1HL-I-164H, type -II). 3. Industry Survey a. letters of inquiry addressed to some 20 manufacturers and vendors of thermal insulation were followed by personal visits from company technical-^ representatives, including directors of research and development and --- i/'- - company officials. The response included submission of letters, catalogs, samples', field demonstrations, and, in one lnstance,.a letter froa ana manufacturer's representative cautioning the Navy against legislating the asbestos business out of existence. In the main, however, helpful lexters LUi C describing new materials and new uses for old materials were received. Information reported by these letters indicated that seme consideration is Q* given to the warhers* safety by conducting particulate counting, by fur CD nishing exhaust ventilation, by wetting down the ingredients and by O automating the production line from processing the raw material to peciaglng the finished product.-. Moreover, one large insulation: manufacturer has contributed' a substantial grant* to the Insulation Industry ^rgiene Research Program which is concerned with the hazards of asbestos and how Q u~ CO U*n- aC. to overcome them. However, no industrial plants were visited to observe 'their msnufactaring procedures, safety precautions exercised, worker habits * or packaging and other pertinent sequences of producing thermal insulating materials. -- C 00 22966^^ -UU-BJI THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOT BE AU rKENFiCAi ED 9Y PRO t.vm 'crqir^ rfr' r--" "V 8377 * 6764 :USt :lal 9390(FA-237) Scr 1584 I ; b. The National Insulation Manufacturing Association through its executive secretary has issued pamphlets describing recoinnended health safety practices for handling and applying thermal insulation products containing asbestos and mineral fibers. Additionally, application prac tices for spraying asbestos fibers have been issued by the executive secretary of the Sprayed Mineral-Fiber Manufacturers1 Association. Adequate ventilation, vetting, vacuum cleaning of -dust and the rearing of Bureau of Uines-approved respirators are emphasized during ripout and application O procedures. The associations advocate both isolating the working area in order to prevent excessive dust contamination in adjacent areas end r~ permitting only nerbeen engaged in ripout operations to be allowed in the work location. In every ease, unnecessary handling of scrap or permitting L.. scrap to lie around unprotected should be prohibited. The recommendations advocated by industry generally have been adopted by the Naval end private shipyards. c;, * O e. Several responses from insulation manufacturers have indicated that new materials are being developed for the replacement of asbestos for CO thermal insulation. When these products become available, they should be subjected to Industrial Hygiene studies prior to adoption, especially if the nev materials contain volatile solvents. In addition, these materials should be critically evaluated vith respect to the following: H- (1) Shipping, movement and storage properties (reight allowance). c: (2) Case of removal and reappllcation whenever necessary. , (3) Dusting tendencies (especially if used in radioactive applications). (4) Combustibility (Hash point, fire point, smoke density, smoke toxicity, fuel contributed). k- e ,.*** (3) Safety requirements (dead load rear, impact or mechanical damage, farces of expansion and contraction, vibration). * . (6) Compatibility-vith metal to which it is applied (resistance .to atmosphere, spillage). - ** . (7) Thermal conductivity at use temperature. -------- * X THIS'DOCUMENT WAS NOT -A .RECTQRD .OF PPG INDUSTRIES, INC. DID NOT COIviS FROM IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES, INC. . '- JUJJ'J-l aw...i ( II.JJI1IJ wfT . 7 BB 0022967.\ ',%* i P j 3 * * .* 6764 :MA;lal 9390(FA-2S7) , . Sep 15S4 # , , # * d. As a result of our inquiries, industry has offered information the following materials and their current prices for evaluation as alternates for minimizing the hazard attending the use of asbestos; n (1) Fiber gloss felt, UIL-I-16/.il, type U with a service tempera ture up to 1200 F is supplied by Pittsburgh Corning, (Temp-Mat), Eastern Refractory Inc. (Ereo-f/.at 1300) and Owens-Coming (V7-1200-6). The approximate cost is sixty-five cents a square foot for a one inch thick ness. NOTE: THIS DOCLTmEMTDID (2) Calcium silicate pipe insulation, MIL-1-2731, grade I, class b; grade II, class d and grade HI, class e, with a service temperature tip to 1200 F is supplied by pabco Industrial products Division (Caltemp), Ovens-Coming (Kaylo), Johns-Manville (Therraobestos), GAF Corp. (Calsilite) and Keene Industrial Insulation (Tkcrmasil). .The cost of I*!4' NFS x 1" thick, gr^de I, class b is seventy-five cents foot; grade U, class d is $1.20foot and grade HI, class e is $1.10 a foot. * ^% (3) Fiber glass cloth with a service temperature of 1000 F is supplied by J. P. Stevens Co. as style 1925 at $2.50 per square yard and style 84205 at $1.32 per square yard. These materials can be incorporate in MU-C-20379, type I by raising the maximum weight requirements per square yard. ... (4) Calcium silicate block Insulation, MIL-I-2S19, classes 1 and 2 with a service temperature up to 1000 F is supplied by pabco Industrial products Division (Caltamp), Johns-Manville (Thermobestos), . Ovens-Coming (Kaylo) and Keene Industrial Insulation (Tkermasil). ' The cost of a 1" thickness is fifteen cents a square foot and of a 2" thickness is twenty-eight cents a square foot. (3) Asbestos doth,' lint free, is supplied by Kieolet Industries Inc., manufactured with Kicolon and Nlcofil yams.. Cost is not known. (6) Asbestos felt, lint free, with a service temperature of S50 F* - - - Is supplied by H. K. Porter Co., Inc. (Blitted Amosit*). jfr _ (7) Foam plastic, elastomeric, pipe insulation, MH-F^152S0, ^ forms T and S with a service temperature of ISO F .is supplied by Johns- Manville .(Aerotube), Keene Industrial Insulation (Mono-flex), Armstrong Cork (Arms-flex) and Owens-Coming (0-C Flexible Tubing and Sheeting). A 1 1/2" NTS x 3/4" thickness is thirty-seven cents a foot and eighty- seven cents s square foot for aheeting 3/4" thick. m _________ ______ . * i BB 0__0._2_2_968 l THIS DdtUMENr WAS NOT A RC0F.fi OF PPG INDUSTRIES, INC, D:DJ^:r ^,rrA^D IT'S FILES AND*CANN0T Be nUTn~NT.CA.-ED BY PPG INDUSTRIES, INC. 8 8379 6764:MA:lol . * 9390(KA-287) Ser 1584 (8) Refractory fiber, MIL-I-23123, crude B with a service temperatore up to 2000 F is supplied by Johns-llanviUe (Cerafelt). Cost is '1i sot bnotm. * (9) Fiber gloss tape, MIL-C-20079, type U, class 3 is supplied by Reef Industries Inc., and Carolina Narrow Fabric Co. (Scv-Lag Fora-1-Glass /100 Tape) at $1.35 a square yard. (10) Asbestos cloth, a rewettable lagging cloth, is supplied by H. K. Porter Co., Inc..(RSL-100 Lagging Cloth) and Roybestos-lianhattan Inc. (R/M Speedlag Cloth) at $2.50 a square yard. - `JJ (U) Cement, finishing, mineral wool, SS-C-160, type in, dess f with a service temperature of 1200 F is supplied by Eagle Picher Industries Inc. (One-Cote and Rylo Cement), Keene Industrial Insulation (Super Power o a_ *> house), Forty-Eight Insulation Inc. (48 Quid Set Cement) and Pabco Industrial Products Division (finishing Insulating One-Coat Cement). Approximate cost is $4.50/50 lb bag. co o (12) Fibrous glass, pipe insulation, MIL-1-22344, with a service temperature of 370 F is supplied by Johns-Uanville (Uicro-Loh), Keene o c- Industrial Insulation (Uono-Kover), Ovens-Corning (Flberglas pipe Insulation)^:, and Certain-Teed products Corp. (Snap-0n). A l^1 NFS x 1" thickness costs $1.17 a foot. 4. Conclusions . * _ ' ~ . !- - a. Naval and private shipyards as veil as insulation suppliers are well aware of the serious hasards attending the use of asbestos. Nevertheless, considerable asbestos-containing insulation material currently is being used In Naval applications and stringent precautions are not being enforced in all instances. b. In the course of performing surveys of shipyards and insulation i suppliers, NA.TCECFHZLADXV uncovered ample information to lead this activity to believe that the use of hlgh-asbestos-contalning insulating materials should be curtailed due to hasards to the health of insulation jrorJcers. However, inasmuch as the Uadical phase for the overall asbestos stody was assigned to 3TLED by reference (a), BtUED should be consulted for more definitive solutions to the medical aspects of this problem. 9 .**' '* J\I_BB_0022969 - ii. i ii .gpjuiii impiwim h THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOT EE AUTHENTICATED BY PPG INDUSTRIES, INC. . . 8380 * * 1 i ]! 6764 :W.:lol 9390( PA-287) Ser 1564 c. The results of the MAVSECPHILADIY survey indicates that cuitable alternate insulation materials presently are available vith decreased health hazards attending their use. * 5*. Keconniendati ons t .* * Based on the finding o this survey and in order to minimize health hazards attending the use of Naval insulation, the following action is reccorocnded: * a. HATSEC/lZAtSIUPS issue an interim instruction to all concerned activities to replace all current utilization of high-asbestos- containing materials vith alternate materials in the following applications: CO UJ (l) Discontinue the use of aoosite asbestos insulation felt (1EL-1-15091, type A, plain) for stress relieving and as a filler in the manufacture of removable covers. Substitute calcium silicate block insulation (UIL-1-2819, classes 1 and 2) or Cerafclt, a refractory insulation CD CL. 0. felt, conforming to L2L-I-2312S, grade B for stress relieving applications. Substitute fiber glass felt (LEL-1-16411, type H) for aaosite felt in the manufacture of removable covers. * V * 4--- o L . (2) Discontinue the use of vater repellent esbestos felt (1EL-1-15091, type B) as an antisweat insulation for cold and chilled 'vater service, and substitute foam plastic (HIL-P-15230, farms T and S) in its place. * .; v V.-J ^ (3) Discontinue the use of preformed fibrous piping Insulation "(MED-I-27S1, grade IX, class c end grade -HI, class f) and substitute calcium silicate (1!IL-I-27S1, grade I, class b, grade H, class d, or grade in, class e) depending upon temperature requirements. - .. ~ (4) Discontinue the'use of asbestos doth (SS-C-466, form I, grades Vm 0., AA and AAA) for lagging purposes. A satisfactory substitute is fiber gloss fabric such as 184205, presently available from the J. ?. 'Stevens Co., Xnc., end vhleh can be incorporated into IHL-C^2C079 by raising the veight requirements. * ** * *(5) Discontinue the use of asbestos doth (SS-C-466, fas I, grades TJ. G., AA and AAA) for the manufacturing removal covers. Fiber ' glass fabric such as H925, manufactured by J. P. Stevens Co., Inc., is satisfactory for this use and can be incorporated in IHL-C-2GC79, with an appropriate veight adjustment. A limited use of grade AAA-M asbestos doth ss an inner surface of removable covers for rigidity of interference BB 0022970J. 10 t THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME F.EOM IT'S FILES AND CANNOT BE AUTHENTiCAi ED BY PPG INDUSTRIES, INC. I1 .rW-i ill!1 8381 ! 6764:MA jlnl 9390(FA-2C7) Ser 1584 cutouts nay be permitted until glass cloth can be adapted Tor this purpose. I (6) Discontinue the use of thermal tape (?TL-I-15349) for hot piping up to 3/4 inch NTS and replace with fiber glass cloth, such as #1925 of J. P. Stevens Co., Inc., cover and a filler of fiber glass rovings (MIX-1-16411, type I). . (7) Discontinue the use of asbestos finishing cement (ML-C-2903, types I and II) and replace trith mineral wool finishing cement (SS-C-160, type IH, grade f). t O CO T (8) Discontinue the use of asbestos millboard (EB-74-351) in the manufacture of removable covers by replacing trith fiber glass felt (ML- 1-16411, type U). CD 150 n1 QQ_ ZD b. Revise NATSHUS Technical Manual Chapter 9390, Thermal insulation and MIL-STD-769C,references (g) and (h) to reflect the following: CZzD: O O ca * (1) Delete prohibited materials. CD (2) Incorporate additional functions of presently available ` specification materials. r* * (3) Detail methods of handling and disposing of used Insulating materials. . .... O A ri * - (4) Describe the stress relieving procedure for welded pipe Joints . and shafting depending upon the use of a resistance or induction coil and the iMtiia-fcing materials required in each instance. 1 (5) List e realistic tabulation encompassing the `quantity of Insulation and the degree 'of protection afforded by different thicknesses erf the various Insulating materials. . . ' e. Promulgate and strictly enforce comprehensive safety regulations and required housekeeping practices In shops and ships with respect to ' all phases of **TM<n*g insulation materials. In this regard, the vide t. 1 L-T V.'1.1? " 1 " I," (' ' TWtS DOCUMENT WAS NOT A 'RECORD^ OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOT EE AUTHENTICAi tO BY PPG INDUSTRIES, INC. WajUrlJJl'J 1J I 8B 0022971 | -- . .t- J 8382 5 0 \ t n * **m / * * I 6764:MA:lal 9390(FA-287) Sfer 1554 adoption of a self contained battery operated respirator should be considered during rlpout operations of asbestos insulation. A Stryher Cost Cutter trill minimize dusting during this shipboard ripout procedure, d. Critically evaluate nev materials os they become available for the replacement of asbestos for thermal insulation. ../t3 * r : flj* .. > i m a#fi' _< J ..*1/*- 1 T;i Copy tot NAV5EC 61010(20) NAVSECFHELADIV 6700, 6700B01, 6712, 6720, 6723, 6760, 6764(8) , U/- 7?/^^ v. Murdock By direction CO j.J f--* sDr-- -L2_ Cl. O oo O t/"* X UJ ' h-- . O c. 2 Z '* w % Jr "j beT0022972 12 W,S DOCUMENT WAS NOT A RECORD OF . * PPG.INDUSTRIES, INC. DID NOT C0,.t F._0M its Files and cannot be authc* i^ated BY PPG INDUSTRIES, INC. ' ;* . P| J .1 i ww ' ' foiOFTOIAT DSE OHLY 8383