Document LKJK9jmLLzZqjwOnGKzZMNerb

FILE NAME: General Electric (GE) DATE: 1990 Nov 30 DOC#: GE095 DOCUMENT DESCRIPTION: GE Technical Information Letter GE POWER GENERATION 1 RIVER RQAD SCHENECTADY, NY 12345 GE POWER GENERATION PRODUCT SERVICE TIL 1052-3AR1 GE SECTION TECHNICAL INFORMATION LETTER November 30, 1990 ASBESTOS MATERIALS IN 6AS AND STEAM TURBINES AND GENERATORS APPLICABLE T O : Gas and steam turbines and generators PU R P O SE: Advise customers of the potential locations of asbestos-containing materials in GE gas and steam turbines and generators. SUMMARY OF ACTIONS TO BE TAKEN BY GE POWER GENERATION SERVICES AND INTERNATIONAL POWER SYSTEMS DEPARTMENTS: 1. Transmit and review the customer section of this TIL with all affected customers. Copies of the customer section have been provided for all customers in each district. 2. Enter TIL customer delivery/notlflcatlon into the TIL tracking database. This is accomplished via the normal "ORS" (Outage Reporting System) sign-on routine. At the IDMS Production System screen, instead of typing "ORS"; enter "TIL" and select menu option "1*. Enter appropriate data regarding the delivery of the TIL to specific customers for specific units. Problems or questions regarding data entry into the TDS/ORS TIL Tracking Database should be directed to: Shirley Love, 8*235-1595 or FAX 8*235-4028. 3. Other problems or questions should be directed to the appropriate Product Service Engineer. DISCUSSION: In view of recent regulatory trends with regard to asbestos, it may be important for customers to know where asbestos-containing materials could be present in their gas or steam turbines or generators. This generic information is provided in the customer section of this TIL. This information is based on the factory practices at the time a unit was shipped and does not reflect any changes resulting from the replacement of any materials after shipment. Copyright 1990 by GE Far us by GE perto m ai o n ly. Nat to ba it a w or rproducati in Wtole or port fo r u m ovtsi e GE without th express penaission of th Product S e rv ire Deportacele. - 2- DISCUSSION, cont.: :i!_ 105Z-3AR1 GE SECTION The goal of eliminating the use of all materials containing any asbestos in the manufacture of turbines and generators has been completed following a phase-out which began in the early 1970's. This TIL is for information only. No specific actions are recommended or implied regarding the replacement of material containing asbestos. Regulatory compliance, such as maintenance and parts replacement, remains the customer's responsibility. Non-asbestos materials are now used in spare and renewal parts, and will be automatically substituted for any former asbestos material part numbers. EXPENSE POLICY: Any expenses related to actions taken as a result of this TIL are to be to the customer's account. PRIORITY CODE: This priority -3a TIL contains technical information considered useful to the customer. ATTACHMENT: - Customer section of this TIL INDEX NO: T.l.E, G.l.A PREPARED BY: C. R. Gordon APPROVED BY: RS Couchman, Manager Steam Turbine Engineering and Doveiopment RE Fenton, Manager Generator Engineering and Development tterson, General Manager Gas Turbine and Combined Cycle Engineering ISSUED BY: RJ f^racek, "Manager Steam Turbine Service Engineering EJ Walsh, Manager Gas Turbine Service Engineering DISTRIBUTION: TIL 1052-3AR1 GE SECTION -3- GE POWER GENERATION CUSTOMER SERVICE - PGSD: Managers (Selected), Operations Managers, Customer Service Managers, and selected others ASO: Managers (Selected) GE POWER GENERATION OPERATIONS PGE: Engineering Managers (Selected) GE INDUSTRIAL AND POWER SYSTEMS SALES - IPSD: Managers (Selected), Power Generation Service Managers, Regional Power Generation Sales Offices (Ref: TIL Distribution List as maintained by Technical Programs and Service Support, Bldg 36-6W) NOTE: Other GE components and individuals may be added or deleted from TIL distribution as required. Fax changes to: Manager, Technical Programs and Service Support Fax number (518)385-4028 or 8*235-4028 GE POWER GENERATION 1 RIVER ROAD SCHENECTADY, NY 12345 GE POWER GENERATION PRODUCT SERVICE TIL 1052-3AR1 TECHNICAL INFORMATION LETTER November 30, 1990 ASBESTOS MATERIALS IM GAS ANO STEAM TURBINES ANO GENERATORS APPLICABLE TO: Gas and steam turbines and generators PURPOSE: Advise customers of the potential locations of asbestos-containing materials in GE gas and steam turbines and generators. This information is being provided so that appropriate actions may be taken by each customer to comply with regulatory trends concerning asbestos. The information provided is generic and applies to units in the "as-shipped" condition. DISCUSSION: The properties of asbestos once made it desirable for applications such as heat retention and sound-deadening materials, electrical insulation, gaskets, stem packings, and shaft seals, especially since non-asbestos substitutes were not always available. As the health hazards of this material were recognized, new non-asbestos materials were developed, enabling current turbines and generators to be manufactured without asbestos. The change to asbestos-free materials was completed in 1987 for gas and steam turbines, and early 1989 for generators. Tables 1-3 list generic potential locations of asbestos materials in steam turbines, gas turbines, and electrical equipment, including generators, as manufactured. Copyright 1990 by GE TIL Category: T The information published in this Technical intonation letter is offsrsd to you by GE in eonsidoretion of its ongoing sales and service reletlenehip aith your organttaticn. However, since the operation of your plant involve* eeny factors not within our knowledge, and since operation of the plant is in your control and the ^ttinet* responsibility for its continuing successful operation rests with you, GE tpacifically disciin* iny responsibility for liability based on claims for d-- ge of any type, i.e. direct, consequential or special that nay be alleged to have been incurred ea a reeult of applying this inforamtion regardless of Aether it -s claimed that GE i* strictly liabls, in breach of contract, in breach of warranty, negligent, or is in other respects responsible for any alleged injury or d-- eg sustained by your organization of o result of applying this information. TABLE I ASBESTOS-CONTAINING MATERIAL IN STEAM TURBINES TIL 1052--3AR i ASBESTOS-CONTAINIMG MATERIAL TTPC POTENTIAL LOCATIONS GENERAL SPECIEtC COWENTS HEAT RETENTION MATERIAL (Then**! insulation, lagging) Hot surfaces, > H 0 F -HP/IP casing* Main s t e m piping -Main staaai valva* -Auxiliary steaa valva* -Mon-return valva* -Moistur* separator and Moisture separator reheeiers Steaa pocking exhauster Staae seat evaporotor -Secondary steaa piping and valvo -Steae-drtven oil puapa and regulotora Aspaatos aliainatsd from CE spacificiationa early 1970's. Several asbestos-free types of awterial available ceaNorcielly. SOUND INSULATION (spreyed-on) Metal lagging internal surfaces -Turbine enclosure -Eapha*is lagging Sots* insulation mterial aliainoted on current thlpaanta- Can be r e a m e d and left off existing setal laggings. If sound deadening is still required, nen-aabestos, non*sprayed-on starisi is available. CASKETS - Spiral wound HP/IP casings -Baiane* hole access covers -Gib access covers -Inspection hole access covers -Boresespd flange connections Asbestos-free rcplacaaient gaskets available. LP inner casing(s) -Hand hole access covers -Borescape flange connecttons -Internal piping Main stasai piping HP shell flanges -RNT shell flanges -Crossover flanges -Crossare!* flanges -Crossare!* relief valve nowiting flanges -Jtstper pipes TBlt 1. cont TIL 1C52-3AR1 ASBE5TCS-C3NTAIN* :MC HATE M l Tro POTENTIAL LOCATIONS GENERAL SPECIFIC COMMENTS GASKETS - Spiral ound, cont. Main steam valve assemblies ( m i n stop, reheat, and intercept valves) Non-return valves -valve heads -Bolted-in seats -Boltad inlet flanges -Bolted outlet flanges -Control valve stand and head -Bolted stem bushing guides Leakoff flanges -Yoke to easing -Equaliter valve flanges -Stop valve bypass seat Asbestos-free replacemen: gaskets availabia. Auxiliary steaai valves (cqualitar, blowdoun, ventilator, bypass, control valve itartlng, speed etching, crollover admission, traction, staam seal regulator) -Valve head -Soltad-in seat* -Bolted inlet flanges -Bolted outlet flanges -Bolted ate* bushing guides -Leakoff flanges -Toko/stand to casing Moisture separator (MS) and ooisture separator rehesters <MSR) -NS/MS* aanways -m s /m s r drain tank manuays -Leak detection orifice flanges Heat exchangers (steaai packing exhauster (SPE), steaai M a i evaporator (BSE)) -SPE Shell drain -SBC drain tank inlet -SBC drain tar* pipe connections Secondary steam piping and valves (steaai seal, external drain, heating and cooling steaai, bypass system, vacuus breakar piping) -tlangad piping connections -Valve inlet flanges -Valve outlet flanges -valve bonnet to body -Relief valve test lever attachaient T A U E 1. cent. TIL 1052-3AR1 ASKSTOS-CONTAINIHG MATEXIAL TYPE POTENTIAL LOCATIONS GENEIAL SPECtflC CGM'ENTS GASKETS Tlt s h M t (or M i n cloth*) IP casing Pecking c m inga *tnnee cosing o c c m s Exhaust hood aarwsyo Last stage orifice esseebly earing cap aceees openings -Exhaust flange Sight flow opening 'siting flanges 'Pipe flanges woven cloth gaskets can be replaced with non-asbMtos materials or suitable non-asbestos spiral voted gaskets. Non-asbestos flat sheet g M k e t materials aval table. Volvo c h M t valve c h M t cover Hoot exchangers (stead packing oahouitort, otoao M o l evaporators, oil coolor, EMC coalers) -Shalt to tubesheet -Shell outlet flange -Header to cover -Nanwey cover Water header to cover water header to timesheet -Usterbox to cover -Shell flange to s m I ring Seel ring to uotertai Hydraulic applications (hydroulic -- chan ia-- (MNC) ot front standard, hydroulic enclosures, operate hydraulic cyllndor l o o e e i i M , lube oil tank, lift p m > Msaatoliee, frcnt/Nid ttandordo, turning goer housings, thrust bearing voar detector, oil conditioners, filters) -Hydraulic aechanioap bolted joints Housing access eovars -Lube and hydraulic pipe flongM -Oil peeps aotevting ftangos -poster p u p caver -Lube oil transfer valve apunting flange -Gage pointings -Suitchbox cover Air applications -Air cylinders, valves, and filter regulators W;' TIL 052-3AR M B i t 2. cent. ASBES70S-CCNTAININC MATE*:AL TYPE POTENTIAL LOCATIONS CENERAI SPECIFIC COMMENTS 3RAICEO PACKING Load coicling guard -MS5001K, L only won-asbastos packing available. BULK PAD INSULATION Turbina snail Exhaust f r m a and di ffusar -Jackatad insulation packs -Sheet netal-retainad padding, in innar barrai and aft all Non>asbcstos material available. Coatoustion naadars and piping -Sheet metal-covered insulation blocks and wrapping I*UU ASNESTOS-CONTAIMING MATERIAL IN GENERATORS ANO OTHES ELECTRICAL EQUIPMENT TIL 1052-3ARI ASBESTOS-CONTAIN ING ATEIAL TYPE POTENTIAL LOCATIONS GENERAL SPECIFIC COMMENTS SOUNO INSULATION (Sprayed on) Natal lagging, internal surfaces -Ganerator lagging -Excitation equipaant lagging Can be renovad and left off If seisid deadening is still required, non-asbestos, non-sprayed-on Material is available. GASKETS Flat sheet Hast exchangers (stator bar coolers, air coolers, hydrogen coolers) Shell to tubesheet Shell outlet flange -Header to cover -Water h eader to cover Water header to tubesheet -waterbox to cover von-asbestos Materials available. Generator -Accesa covers High voltage buahing aowiting flanges INSULATION Motors DC nator insulation Asbestos eliainated in i960. ThemocoLples Extraton wire insulation Asbestos eliainated in 1970. Ganerator heaters -Wire insulation Asbestos elininated in 1970. Ganerator electrical insulation systaaa (woven Materials, panera, resin fiber ceablnetione, putty) Stator bar ernor tape Tape on ducts of gas-cooled araeture bars Vertical separators in eraaiurs bars Lower lead insulation Stator bar voltage grading Motor slot insulation and a m o r voltage grading Rotor blocking -otor and turns tape -Packing w d e r series loop insulation -Retaining ring insulation -Stator bar strand insulation Asbestos e( initiated in 1983 for generators Manufactured m Schenectady and early 1989 for generators Manufactured in Lynn. Exciters (Altarrex and Thyrrex) -A pole rotor turn insulation Asbestos eliainated about 197*.