Document KRRY1YnXj9k028MG90RGem7QN

G E N E R A L ^ ) ELECTRIC COMPANY ONf UVEI tOAO, 5CHENECAO. NEW TOIK 12305 . . . TELEPHONE .510 PRo*Hin 4-2211 AGENCY AND DISTRIBUTOR SALES OPERATION Nay 11, 1970 TO: AGENTS AND DISTRIBUTORS; G entlem en: othnoosAeurtutamtcihalieildtini egi ss l iaasntdco. piny doufs toruiar lsg ewn ehroasel nleatmteesr ,atroe any Pq uleeassteio nreacda ltlhyeoseurl eA&t tDe rs as l,e sande nigfinyeoeur . have yrceooaupcyrhWeoceduf wstbooonyumeldoeourarsf pmwtphhraoeemislceiinyagogteu.enitehtrianilkf l eywotetuemrwasyountlodo tsaehnnyadveoaf Very truly yours, RFQ:LM3 attach. R. F. Quinn Manager ENlaetciot rniacl US atliel ist y Market D istribution : * GGRGInBErrdSaaBCeynpbotueafUnrfidmnebtnoetrnsg,e---rG,AAArGG-a-66E4y7,b6S,Ca,TroCaCbEoosd1dl2eeeGsIcA0Ht1,rE1BiC2coA,sCt1aoo1nnmDd#pAa3vnA1ey1n,Eue420 BLreidxNgineewgptooYrnotr, kACvCeonnitury.ee,cti.cu NT B ronson, Graybar E le c t r ic Company, 420 L exinNgewtonYoArkveCnuitey, N ote: M essrssi.x Ucmobpciregse.r, Bronson and B u ffin to n should r e c e iv e 775244 bT+rAA JkTnrri INDUSTRIAL SALES DIVISION Open Letter to Electric Utility Customers: hfafuinanrvdtaehstWekhinreae rtcfaheoorellnellocpineqwarousintntidegapdbdutlowrieecibltthehoeacstbotherfedeiiccmf.cerorponItomfatreyitnnouatunsfsrcheooelam.fevctehtorinusiorctlae,rltettchaeoperrrp,deabsruiastwtunihfsoeytcnhooeeunertdhaoaifrnvoienrn,ogyytooPyuuyourtwoainblloel, mmmteaMaaghsnnproaaacoaddptartrndatweklcAspeeraoasarsiostanl,ntildnunyoottyidalnocffsgoim*.fchu.mgCcel.lh.iruohnoaToAeldreraorwnhbismeenrnveiiitpntginsiwmsirchegmaoaGeoaetmnlcleenftelomedCyntangarhleotebwsioceeramnieeaarphltrespsilrshannaea.ovEetlv,nnhensailWyt,rsayehbaotlciihetsertnstoaieermlpfcrnteitoahekuchernenfbq^neoeoulutibuvsiwr.acrsoenenneenldecRegetfoaiaxsfiaetnsssesupitcetucceseeassateppncorsrptlotaeemkniellncrqdyaidteeeuwrsrtttoieoprrihodtflmateoehsobdlrrdiaenpeeoeetittaehimroissnhlcvlepeblgaahi'euceinryvlnpttckyoeirdvmoiou,eibautsntcsPaemrestnriyiiteooonsriatnrnfiyulaaarleewis,nflan,olfeopiptdfiealctrlicdoivq.dtactillarulsaldiuyirfatecetiiatoaoa.icunnl,tsss ttceroripciyaiMlsissoidnnaostartnanecocthoteeifhpdinatdfsoobtrfheayeeoinlreutrrwteeiavnryifefoiwrnroimtnmoagltaMpinornodon.coseardnwutoraetesexrtpoernebsvesirisnougnrmeitetshnact.to,ntGhceeernsnee,rmaalnadE laec voPitPddnuicriylrirsacurtopnnaimanaeoAtsnmdlissllooaatyebtlanhl.n,ynosSetduwsayaSwtguoelhsahhghuobcheei.utolpntahil,npsdvidhtIeesryldieolsommd,iplnuaaaoaoadhttsrieeacasyirh,vlsoiaeeaumaarrslrtrsa.gtcaieyeesrnnIxabntogpsipfeeoeeomcann3ProlsdeemySenedrfu,erotapsirtnntnoeoowreeleMvaic,atliceheisoihdstconsMtrypssar,ahooroinocuuDynuatnseoilaldanpd'nnsatodst.bpoWfoep2tlsht4va.cGpoer6irnla*.adaptgcpuiKrMsestopdhr,mb,oouelntiasmenhspetmaeemrcnrorolretoifobaoifscslmleechhemrdranaaeyspobfe adnudst,sMtroaartgeesdr,ibasylowlyidohuiicnhpseuinsldasitnaiogtnuasrabttaeektdteenwr iftsrhoolmPuytiraoapnnp. oalrWasteuucisnh, teeantscdf.,utolslhebror*uisnldgebatrhetehco,wnhstaoawlien*ed 775245 (over) A. GENP 004148 adnispaiomsatlopwroobrlkeimngtooutthae laotntegn-triaonngoef saonluatpiopnrofporriathtee binoddyusitnryth. e industry with nwouoitrthedeTtxhhipneeemorinuieedrnxuiccnseetsprttytrhufehocyartsihotauenvmseebpdopoorarkoassdkr,uyacres.ekdlisnnionirirlaliptaepftafireoacnttuiosnnfcowerrotorakvimenreinnthdiinirvtiycdluoyaseelasr,csoa.ns tIanct cgaouods eWjuietdpgi slmanuenstetodi scionenxtsieenraucleei sdtehdaepiupnsaehraaontfudstl,hiniwsg-eaenfxodcredellsiesenpetonslioaqludpiidrf foidcceiuedlltueirceest rs*pi cr oavnidd ebde Very truly yours, 775246 JKK.L ELSGniC IAI tout:: u/.;t A30ICSS AKO SAU: AUJCST 07S7RICT MANAGERS - ISD Gnntlcucn; I Mfi J S T R I A l 5 A LE S O 6V I S I O W ce: StT Corbin, 2-467 MSeahyc5n,est1a0d7y0^ ^ . . `V y% V..* m iV # \ J\ V , \ .N / .S' x \ V. MoppeItnuryo"onrrnbraseacloeneunrlmoaustlto.,to!it.mvhCineaehVlrtayt/scnhplwwescyrnhra.XoanlantoiChrlontaolomavomeipXnsaoepnuntytunhdhrtelecsita,hhgseamrnisosacaeuyi!lnvoindsplbsefreocdoordrcdmoaunpiuacnessttnsiionvonXg/claeott&ptnetortoega,rlrail*nuoelwivltnieiongnonXg 'toTtltioiofhEeaebtlehyaosrue,dst.rdolIereSseDtuItsttssewsee.riaeasoyluelpoisnt*rrooeCmecdrneupesgistasstiloatycnrmhreiyaeebrarfutstlehtclirurao.dtninrlelPaeccl:erolseso_hsiseaplporertrc.tyc.stthlteycr-uolsrfsi,tseotctbmshee*siev.mriesraAi~lescceescvdeposmir-etsdos- T7J11 you please t'iv instructions to your people that riling tj;e 1ett_ors_ls Mandat a r y J T h e n the call lugs it" nTfistVict have been coaple*t":cl, I would like to re ceive frou the District lianascr a written statement to that eXXoet, I suggest that each District lirnr.ger re tain in his own files Xor the tr'mse being n supporting statecent Xrou each of tha sale:: engineers reporting to him. oIXr yJoouhnhKav. eManncykcqnuuclcs.ticr. on tho above, please ca ll me Very truly yours, EWnJcyloishumre r* / .* / ." \ *V ..... * * foods UcCahlll, Counsel ' GENP U03768 775235 GUIDELINES FOR HANDLING AND DISPOSAL OF CAPACITOR AND TRANSFORMER-GRADE ASKARELS CONTAINING POLYCHLORINATED BIPHENYLS SECTION 3 - TRANSFORMER GUIDELINES General Guidelines A. Definitions - Types of Transformer Askarels The term askarel generally describes a broad class of nonflammable synthetic halogenated hydrocarbon insulating liquids widely used in transformers, reactors, and accessory equipment operated at power frequencies. Askarels of various compositional types are In use (for the general properties and types see ASTM D-2283). Under arcing con ditions the gases produced, while consisting of predominantly non combustible hydrogen chloride, can contain varying amounts of com bustible gases depending upon the askarel type. The following trademarks are used by electrical manufacturers to designate the askarels used in their products: Asbestol Chlorextol Elemex Inerteen W No-F1amol Pyranol &.c Saf-T-Kuhl B. Safety Precautions Based on about 40 years of safe industrial usage, askarels have been considered as relatively harmless materials to humans. There has been no known instance of human Injury when askarels are used under the normally prescribed conditions of precaution and handling.^ Although it has been generally thought that exposure to transformer askarels is not hazardous, provided simple precautions are taken, ex posure should still be avoided and minimized. 1) Vapors The odor of askarel is noticeable -- well below the maximum safe air concentrations. From 0.5 to 1.0 mg per cubic meter of air has been determined to be the maximum safe level of exposure during an eight-hour work day. (See American Industrial Hygiene Association Hygienic Guide Series - January/February, 1965.), The procedures for performing the necessary analyses are contained in Section 5 "A Tentative Procedure for the Determination of Airborne-Polychlori nated Biphenyls." This procedure or Its equivalent shall be used. PLAINTIFFS EXHIBIT IZ7t Page 1 775157 GENP 003595 \ SECTION 3 - (Cont'd) B. Safety Precautions . 1) Vapors - (Cont'd) Breathing vapor or fumes from heated askarels should be avoided. High concentration of vapors can cause irritation of the eyes, nose, throat and upper respiratory tract. Provisions shall be made for adequate ventilation and regulation of manufacturing operations to avoid open exposure of hot askarels (55C or higher). This gases produced when askarel Is decomposed by very high temp eratures (such as that of an electric arc) In the presence of air or organic Insulating materials, contain a high percentage of hydrogen chlortde, and small percentages of other gases. Minute concentrations of this combination of gases are very unpleasant and Irritating, thus giving ample warning of their presence. If exposure to high concentrations, of askarels or Its arced products is necessary under emergency conditions, an acceptable gas mask of the organic can ister-type or self-contained breathing apparatus must be worn. Such exposure should be under the surveillance of other personnel capable of rescue in case of accident. If the odor of askarel or its arced products Is detected by the person wearing protective equipment, he should immediately go Into fresh air. All gas masks, respirators and replacement parts should have Bureau of Mines approval, and be maintained on a regular schedule in accordance with the manufacturer's recommendation. 2) Fluid Unlike mineral Insulating oil, there Is no fire hazard In handling askarels. A limited solvent action (similar to that for paint thinner) on the fats and oils of the skin with prolonged contact may lead to drying and chapping of the skin. As with Insulating oil, some people are allergic to askarel and continued exposure may result In skin Irritation. Both the liquid and vapor are moderately irritating to eye tissue. Operating procedures should avoid contact with any askarels. The use of porous gloves which can absorb and retain askarels is to be avoided. Resistant gloves and aprons of the Neoprene, polyethylene, VIton type should be used If contact is unavoidable. In case of spillage on the clothing, the clothing should be removed as soon as practical, the skin washed and clothing laundered. Medicinal washes'or mild detergents followed by application of cold cream will reduce Irritation resulting from askarel contact with an open cut or abrasion. ` Safety glasses with side shields or a face shield should be worn when handling askarels. Eyes exposed to liquid askarel should be Irrigated immediately with large quantities of running water for 15 minutes and then examined by a physician Tf the Irritation persists. (A drop of castor oil has been found to reduce Irrita tion .caused by eye contact.) 775158 Page 2 GENP 003596 SECTION 3 - (Cont'd) B. Safety Precautions 2) Fluid - (Cont'd) Persons developing a skin irritation or respiratory tract irrita tion while working with askarels should be placed under supervision of a physician. Ingestion or swallowing of askarels is not generally regarded as a . problem of the Industry. Should accidental ingestion occur, a physician should be consulted. Hands should be washed with warm water and soap before eating, drinking, smoking or use of toilet fac 11 ties. C. Transport Container Harking Any transformer askarels, new or used, as shipped in tank cars, tank trucks, drums, cans, etc., should be labeled with the following:- CAUTION THIS PRODUCT CONTAINS POLYCHLORINATED BIPHENYLS WHICH SOME STUDIES HAVE SHOWN MAY BE AN ENVIRONMENTAL CONTAMINANT. CARE SHOULD BE TAKEN TO PREVENT ENTRY INTO THE ENVIRONMENT THROUGH SPILLS, LEAKAGE, USE, VAPORIZATION, OR DISPOSAL OF LIQUID OR CONTAINERS. AVOID PROLONGED BREATHING OF VAPORS OR MISTS. AVOID CONTACT WITH EYES OR PROLONGED CONTACT WITH SKIN. IF SKIN CONTACT OCCURS, REMOVE BY WASHING WITH SOAP AND WATER. FOLLOWING EYE CONTACT, FLUSH WITH WATER. IN CASE OF SPILLAGE ONTO CLOTHING, THE CLOTHING SHOULD BE REMOVED AS SOON AS PRACTICAL, SKIN WASHED, AND CLOTHING LAUNDERED. D. Receiving. Handling and Storage of Askarels Askarels are shipped in tank cars, tank trucks, steel drums, metal cans and test sample containers. When received all containers should be inspected for leaks. 1) Storage Tanks Storage tanks should be erected so that inspection can be made for leaks or spills. Construction should be such that Inadvertent leakage or spills are prevented from reaching streams and sanitary or storm sewers. 2) Tank Car and Tank Trucks All bulk shipment equipment should be Inspected for leaks immediately upon receipt. Drain pans must be provided to prevent spillage from unloading hoses and connections. Askarel fluid collected In drain pans should be placed In "Scrap Askarel" drums for disposition. GENP 003597 Page 3 775159 SECTION 3 - (Cont*d) D. Receiving, Handling and Storage of Askarels 3) Steel Drums, Cans, and Test Sample Containers On delivery all such shipments will be carefully Inspected for leaks. The containers should be stored indoors In an area especially selected for this purpose. A cement curb should en close the area to provide a basin for containing the askarel from one or more containers, should the container be damaged. The area must not have a drain which Is connected to a sanitary or storm sewer. If an Indoor storage area Is not possible, the containers should be stored under a lean-to. E. Water Effluents - Sampling, Concentration Limits, Analytical Procedures 1) Control of Water Effluents The Industry goal is to eliminate askarel in plant water effluent streams. However, It Is recognized that existing drain systems from manufacturing plants, repair shops and installation sites may be contaminated as a result of past practices.* Other sections of this Guide provide that no askarel wastes of any kind be dis posed of in any water effluent streams, and that accidental spills be prevented from getting Into such streams. a. Concentration Limits The 1972 EPA proposals are to keep PCB levels In rivers and lakes below 0.01 parts per billion. Plant effluent streams should be managed and controlled, in a manner consistent with this goal. b. Hon Itoring Streams All plant effluent streams should be monitored on a regular basis, consistent with plant situations, to determine compli ance with the goals proposed above. The procedures for perform ing the necessary analyses are contained In Section 5, "Analysis of Water and Sediment for Polychlorinated Biphenyls." This procedure or its equivalent shall be used. c. Methods for Minimizing Effluent Stream Contamination The ideal approach Is to totally Isolate all effluent streams that could be contaminated with askarels during manufacturing processes and prevent them from being discharged from the plant. GENP 003598 Page k 775160 SECTION 3 - (Cont'd) F. Disposal Procedures and Services 1) Sources of Materials Requiring Special Handling and Disposal Procedures Liquids containing PCB's and solids containing or contaminated with PCB's may be obtained from any of the following sources transport containers, transformer manufacturing processes, n-test failures, liquids contaminated beyond reclamation, in-service transformer leaks and failures, askarel-fi1led transformers scrapped for any reason, etc. 2) Classification for Disposal of Materials Containing PCB's In general, there are three types of materials for disposal; liquids, burnable solid materials containing PCB's and nonburnable solid materials contaminated with PCB's. a. Liquids Liquids containing PCB's requiring disposal by high-temperature incineration may consist of the following: 1. PCB's contaminated with mineral oil. 2. -. Mineral oil contaminated with PCB's. 3. Non-reclaimable contaminated transformer askarels, arced askarels, askarels from manufacturing spills, and sump accumulation, etc., rich In PCB's, and askarels from holding basins, drip and drain pans, washings, sample jars and containers, etc. b. Burnable Solid Waste Material Containing PCB's These materials can be disposed of by high temperature Incinera tion and consist of celluloslc materials, rags, pressboard, wood, sawdust, fuller's earth In bulk or in cloth bags, blotter papers, nitrile or cork gaskets, etc. c. Non-burnable Solid Waste Materials Containing or Contaminated with PCB's These materials may consist of coil structures, steel, copper, aluminum filter units of the steel mesh construction type, askarel drums, cans, etc. GENP 003599 Materials of this nature should be allowed to drain with the liquid collected in. drip pans, etc. Further removal of adhering PCB's can be accomplished by washing or solvent extraction with kerosene or other approved washing liquids such as perchloroethylene or trichloroethylene. Accumulated liquids can be dis posed of as indicated In "a" above. Solid materials may be handled as normal scrap. Page 5 775161 SECTION 3 - (Cont'd) F. Disposal Procedures and Services 3) Shipment of Scrap Liquids for Disposal All liquid scrap material should be placed In appropriate metal transport drums, properly labeled, for shipment to a company offer ing an acceptable disposal service. 4) Shipment of Burnable Solid Waste Material Containing PCB's for 0 isposal Material of this type should be placed in open head drums with suit able closures and with the drum properly labeled for shipment to a company offering an acceptable disposal service. 5) Liquid and Solid Waste Disposal Service Organizations a. General Disposal of askarels and askarel-soaked materials must be accomplished by means in which there is no significant release of askarel to the environment. At present, disposal is accom plished by carefully-controlled incineration of liquids and soaked software, and by controlled land-fill burial of apparatus and other hardware from which askarel has been previously drained *- and washed. Present knowledge Indicates that proper incineration must involve a suitable balance between dwell time and temperature in the incinerator plus oxygen availability and finally suitable scrub bers to remove HCI formed; e.g., (1) two-second dwell time at 2%2000F and 3% excess oxygen in stack gas; (2) 1-1/2 second dwell time at 2700F and excess oxygen In stack gas. Controlled land-fill or deep-well disposal can be used where per mitted by Federal, State and local regulations. b. Costs In addition to the normal costs of collecting scrap liquids and solids for disposal, additional costs borne by the owner of such scrap include shipping container, cost of transport to the dis posal service organization and a disposal fee usually based upon a per gallon or per pound charge. c. Disposal Services k,Organizations offering disposal services are listed in Section Including location, facilities available, types of material han dled, and disposal procedures used. Specific shipping directions, disposal procedures and costs should be obtained from the company. GENP 003600 Page 6 775162 11. Spec If le Gu de11nes A. Transformer Manufacturers, Service Shops etc. ~ Housekeeping 1) Plant Area for Filling Equipment with Askarel It Is necessary to assume that In filling equipment with askarel and further handling of this equipment that an askarel spill may occur. Therefore, it is necessary to provide facilities and a procedure for clean-up to prevent contamination. a. Askarel Filling Area 1. The location of the askarel filling area should be adjacent to the test area and final shipping area to minimize the danger of damage of units during handling. 2. The main manufacturing area provided for filling of equip ment with askarel should be cement floors so constructed that any Inadvertent leakage or spills are prevented from reaching streams, sanitary, or storm sewers. All askarelhandling equipment such as pumps, hoses, etc., shall be of the askarel-resistant type. 3. Drip pans shall be provided for hose connections and fill ing valves. b. Special Containers for Scrap Materials 1. Drums labeled "Scrap Askarel" must be available for handling all spilled and waste askarel from sumps, failed units, drip pans, sample Jars, etc. 2. Open-head drums with suitable closures and labeled "Scrap Burnable Askarel Waste" must be available for handling con taminated cellulose Insulation, rags, paper pressboard, wood, gaskets, sawdust, etc. 3. Separate containers for handling steel, copper, and aluminum, each adequately marked, shall provide for the components of contaminated core and coil assemblies. These containers are required for the various materials when repairing or scrap ping as5emblles. 4. Containers for supplies of sawdust for absorbing small askarel spills or clean-up of larger spills should be provIded. c. Conditioning of Askarels 1. Askarel Conditioning Equipment a. The conditioning unit should be located either In the storage tank area or the main transformer manufacturing area for filling with askarel. GENP 003601 Page 7 775163 II. Specific Guidelines ~ (Cont'd) A. Transformer Manufacturers, Service Shops, etc. - Housekeeping 1) Plant Area for Filling Equipment with Askarel - (Cont'd) c. (Continued) 2. Fuller's Earth a. Conditioning of new askarel or recycled askarel requires fuller's earth treatment. The spent fuller's earth in cartridges or bags when replaced should be allowed to thoroughly drain over drip pans to remove as much liquid askrel as possible. The cartridge units of steel mesh construction should be placed in the "Steel Contaminated with Askarel" container for disposition. Cloth bags filled with fuller's earth shall be placed in the "Scrap Burnable Askarel Waste" container for disposition. d. Teardown of Units for Repair or Scrap 1. Teardown Procedure a. Drain all askarel from the unit either Into a holding tank for reuse or Into the drum labeled "Scrap Askarel" for disposition, then allow sufficient time for all the askarel to drain from the core and coils. b. Remove the core and coil assembly from the transformer and place It on the floor. Sufficient sawdust should be placed on the floor to absorb any askarel fluid that still drips from the transformer. c. Place all materials In the appropriate salvage containers during the dismantling for later disposition. d. All used materials, Including rags, sawdust, tape, etc., regardless of quantity, shall be put into the appropriate containers for disposition. B . Transformer Labeling 1) New Transformers All new transformers that contain PCB's shall have a label of adequate durability permanently and prominently attached to the tank by the manufacturer, giving adequate warning and instructions. A suggested label would Include the following: Page 8 775l64 00 s to II. Specific Guidelines - (Cont'd) B. Transformer Labeling 1) New Transformers - (Cont'd) CAUTION THE INSULATING FLUID IN THIS TRANSFORMER CONTAINS POLYCHLORINATED BIPHENYLS, WHICH SOME STUDIES HAVE SHOWN MAY BE AN ENVIRONMENTAL CONTAMINANT. CARE SHOULD BE TAKEN TO PREVENT ENTRY INTO THE ENVIRON MENT. IN CASE OF MALFUNCTION OR LEAKS, CONSULT THE INSTRUCTION MANUAL OR THE MANUFACTURER. 2) In-Service Transformers The transformer manufacturer should make suitable labels available with a similar warning as In B-1 above for use on existing trans formers. C. Transformer Users - Shipping, Installation, Maintenance. Sampling, Apparatus Disposal 1) General Askarel-f11 led transformers are delivered to customers as sealed units from which there Is no escape of askarel under normal opera tion. While certain types of equipment failures can permit loss of some askarel to the environment, such cases are extremely rare. 2) Transportation and Receiving Immediately upon receipt of the equipment and following any trans portation or handling accident which could affect the integrity of the tank, bushings or radiators, examine the transportation vehicle, tank and fittings for any leakage or spillage that may have occur red In shipping. If leakage Is evident, correct the cause and soak up spillage with absorbent materials such as sawdust, following with clean-up of the affected area with rags soaked with kerosene or other approved solvent such as perchloroethylene or trichloro ethylene. Collect ail materials used for proper disposition as described In Section 3 I F, "Disposal Procedures and Services." 3) installation and Periodic Inspection Following Installation, the unit should again be inspected for any damage or leakage. It Is recoirmended that periodic fn-servlce inspections be made for any leaks. 4) Filling, Filtering, or Drying Askarel Most askarel units are shipped with the proper amount of askarel but if it becomes necessary to top off a unit, follow the manufacturer's instructions. Page 9 775165 GENP 003603 II. Specific Guidelines - (Cont'd) C. (Cont'd) k) Filling, Filtering, or Drying Askarel - (Cont'd) If necessary to dry or fuller's earth treat an askarel unit, follow the manufacturer's instructions. When filtering or con ditioning askarel, all of the same precautions previously des cribed apply as to drip pans, proper disposal of filter media, etc. 5) Sampling It Is common practice to sample askarel from a transformer for periodic maintenance testing. As previously described, such samples should be taken In a manner to avoid any contamination of the environment. Washings should be collected for proper disposal. Field and laboratory test samples, washings, etc., should also be collected for proper disposal. 6) Transformer Disposal The ultimate disposal of an askarel-f11 led transformer may be accomplished in either of two ways. a. Complete drainage and dismantling with the proper, disposal of the askarel and askarel-soaked components as described earlier In the section "Disposal Procedures and Services." b. Disposition of askarel transformers by means of Junk or scrap dealers should be avoided unless a transformer Is first drained, followed by soaking of the Interior with a suitable solvent. Accumulated liquids and washings are to be disposed of as described earlier. GENP 003604 Page 10 775166