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Category:DEFICIENCY REPORTS (PER 10CFR50.55E & PART 21)
MONTHYEARML20140A4761997-05-27027 May 1997 Provides Addl Info to 970429 Part 21 Rept Re Potential safety-related Problem W/Asco HV 266000-007J Scram Solenoid Pilot Valves.Corrective Actions Also Listed ML20115J3981996-07-22022 July 1996 Interim Part 21 Rept Re 3/4 Schedule 80 Pipe Furnished to Consolidated Power Supply.Investigation Revealed Only One Nuclear Customer Involved in Sale of Matl ML20072T0171994-08-30030 August 1994 Final Part 21 Rept Re Gimpel Trip & Throttle valve.Dresser- Rand Changed Nuclear Part Insp Records for Both Coupling & Stem to Require That Parts Be Tagged W/Proper Assembly Instructions ML20072A7871994-08-0505 August 1994 Initial Part 21 Rept 038 Re Failure of Gimpel Trip Throttle Valve to Open During Testing of AFW Pump Turbine at Toledo Edison.Subj Valve Stems Should Be Tagged W/Instructions Defining Proper Procedures for Securing Stem to Coupling ML20059H7721994-01-17017 January 1994 Part 21 Rept Re Virginia Power Notifying Fairbands Morse Via Failure Analysis Rept NESML-Q-058 of Defective Air Start Distributor cam,16104412 ML20059F2631994-01-0707 January 1994 Part 21 Rept Re Air Start Distributor Cam Mfg by Fairbanks Morse.Mfg Suggests That Site Referenced in Encl App I Inspect Air Start Distributor Cam as Soon as Practical ML20044G5311993-05-26026 May 1993 Suppl to 921207 Part 21 Rept Re Declutch Sys Anomaly in Certain Types of Valve Actuators Supplied by Limitorque Corp.Limitorque Designed New Declutch Lever Which Will Be Available in First Quarter 1993 ML20126J5961992-12-31031 December 1992 Part 21 Rept Re Potential Loss of RHR Cooling During Nozzle Dam Removal.Nozzle Dams May Create Trapped Air Column Behind Cold Leg Nozzle Dam.Mod to Nozzle Dams Currently Underway. Ltrs to Affected Utils Encl ML20125C7161992-12-0707 December 1992 Part 21 Rept Re Possibility for Malfunction of Declutching Mechanisms in SMB/SB-000 & SMB/SB/SBD-00 Actuators. Malfunction Only Occurs During Seismic Event.Balanced Levers May Be Purchased from Vendor.List of Affected Utils Encl ML20127P5861992-11-23023 November 1992 Followup to 921005 Part 21 Rept Re Potential Defect in SB/SBD-1 Housing Cover Screws.Procedure Re Replacement of SBD-1 Spring Cover Bolts Encl.All Fasteners Should Be Loosened & Removed.List of Affected Utils Encl ML20118B4391992-09-11011 September 1992 Part 21 Rept Re Degradation in Abb Type 27N Undervoltage Relays Used in Electrical Switchgear.Recommends That Users Review Applications Requiring Exposures Greater than 1E03 Rads TID W/Time Delay Function Option ML20096F5921992-05-11011 May 1992 Followup to 920417 Part 21 Rept 10CFR21-0062 Re Failed Shaft in DG W/Emd 645 Series Engines Using Turbochargers Remanufactured from May 1991 to Jan 1992.Turbochargers Should Be Removed & Returned to EMD for Insp/Repair ML20043A6091990-04-27027 April 1990 Part 21 Rept Re Defective Axial Cracks in Pump Shaft in Region Immediately Above Impeller & in Reactor Recirculation Pumps.Probably Caused by Crack Growth as Thermal Fatigue. Technical Advisory Bulletin Will Be Sent to Each Util ML20005G6831990-01-0505 January 1990 Part 21 Rept Re Installation Instructions for Grommet Use Range for Patel Conduit Seal P/N 841206.Conduit Seals in Environ Qualification Applications Inspected for Proper Wire Use Range & Grommets Replaced ML20247D3011989-07-12012 July 1989 Part 21 Rept 10CFR21-0047 Re Control Wiring Insulation of Inner Jacket Used on General Motors Diesel Generator Sets Identified as 999 or MP Series.Encl List of Owners of Units Notified ML20246K7401989-04-26026 April 1989 Part 21 Rept Re Incorrectly Stamped Name Plates on Certain Asco Nuclear Qualified Valves.Vendor Will Contact Each Affected Facility & Furnish Correctly Stamped Plates & in Near Future Discontinue Sale of Rebuild Kits for Valves ML20235U0291989-02-27027 February 1989 Part 21 Rept Re Velan Maint Manual VEL-FBBM 2 1/2-24 Inch Forged Bolted Bonnet Gate & Globe Valves & Bolted Cover Check Valves.Investigation Revealed That Dry Film Lubricant Not Appropriate.Lubrication Manual Revised ML20207N4641988-10-12012 October 1988 Part 21 Rept Re Potential Problem W/Emd 20-645E4,Type 999 Excitation Sys Circuit Breaker & Wiring.Potential for Field Circuit Breaker to Trip Due to Combined Air Temps & Field Current Exists at All Plants W/Model 999 Sys ML20245D9541988-09-0606 September 1988 Part 21 Rept Re Condition Involving Inconel 600 Matl Used to Fabricate Steam Generator Tube Plugs & Found to Possess Microstructure Susceptible to Stress Corrosion Cracking ML20153B2811988-02-22022 February 1988 Part 21 Rept Re Defect in Operation of Gas Monitors Using Fixed Filters.Initially Reported on 880212.Caused by Error in Software for Monitors.Vendor Testing Mod to Software & in Interim Recommends Changing Filters Every 48 H ML20210C9771987-04-27027 April 1987 Part 21 Rept Re Use of Incorrect Equation for Predicting Thrust Required to Close Valves AF-599 & AF-608.Initially Reported on 861031.Evaluation Concludes That Std Vendor Formula for Calculation of Thrust Conservative ML20209F2931987-04-27027 April 1987 Part 21 & Deficiency Rept Re Gas Bubble Formation Between Diaphragm Layers within Sensing Element of Sor Series Switches.Cause Not Yet Isolated.Formation of Bubble May Cause Setpoint to Shift Outside Tech Specs ML20211P7211987-02-23023 February 1987 Part 21 Rept Re Rockbestos Coaxial Cable Used in Sorrento Electronics Digital & Analog high-range Radiation Monitor. Insulation Resistance at High Temp Not High Enough for Ion Chamber & Associated Electronics to Operate Properly ML20210F4761987-02-0303 February 1987 Part 21 Rept Re Problem in Torque Switches Supplied W/ Limitorque Operators Installed at Facility.Initially Reported on 870129.Limitorque Did Not Supply Adequate Instructions to Maintain Torque Switches Balance ML20212E6261986-12-22022 December 1986 Possible Part 21 Rept Re 36-inch Rockwell Intl Globe Valves Used as Msivs.Initially Reported on 861218.Mfg May Not Have Accounted for Changes in Valve Operating Characteristics W/ Temp & Pressure.Determination of Reportability Underway ML20213F8601986-11-0505 November 1986 Final Part 21 Rept Re Velan Main Steam to Auxiliary Feedwater Pump Isolation Valve MS-107A Received W/O Stellite on Valve Disc Guide Faces.Initially Reported on 861031.Item Not Reportable Per 10CFR21 ML20215G6801986-10-10010 October 1986 Part 21 Rept Re Vendor Tests of air-operated Diaphragm Valves Revealing Natural Frequencies Less than Required Values of 33 Hz.Initially Reported on 841227.No Adverse Effects Noted During Testing ML20215G5351986-10-10010 October 1986 Part 21 Rept Re Vendor Tests of air-operated Diaphragm Valves Revealing Natural Frequencies Less than Required Values of 33 Hz.Initially Reported on 841227.No Adverse Effects Noted During Testing ML20199G4391986-06-16016 June 1986 Final Part 21 Rept Re Hydraulic Fluid Leakage in Itt General Controls Hydramotor Actuators.Initially Reported on 860418. Caused by Lack of Adequate Testing & Preventive Maint. Condition Not Reportable Under Part 21 ML20205T6451986-06-10010 June 1986 Part 21 Rept Re Defect in GE Type Sbm Control Switch Intended for Use in Alternate Shutdown Sys.Defective Switch Rejected & Returned to Vendor.Remaining Switches Examined. Corrective Action Rept M-36 Issued to United Controls,Inc ML20195D2171986-05-27027 May 1986 Rev 1 to Part 21 Rept Re Dowel Displacement on Connecting Rod Bearings Purchased During Nov 1985 - Apr 1986.Initially Reported on 860421.Rod Bearings Will Be Inspected Dimensionally.Further Info Forthcoming ML20203Q1201986-04-30030 April 1986 Part 21 Rept Re Itt General Controls Hydramotor Actuators Leaking Hydraulic Fluid.Initially Reported on 860418.Cause of Leakage Currently Being Evaluated.Evaluation Expected to Be Completed by 860602 ML20141D8051986-04-0101 April 1986 Part 21 Rept Re Model 402 Series Level Control Used for safety-related Application Shipped W/O Torque Check. Customers Will Be Notified by 860428 & Requested to Perform Torque Check.List of Plants Using Component Encl ML20140D6691986-01-28028 January 1986 Part 21 & Deficiency Rept Re Blocked Venturi Holes in Air Start Motor Lubricator Assembly of EMD 20-645E4 Emergency Diesel Generators.Initially Reported on 860127.Further Info Will Be Forwarded When Available ML20151R6851986-01-28028 January 1986 Potential Part 21 & Deficiency Rept Re Field Wire Wrap Practice of Consolidated Controls Corp.Initially Reported on 860124.Procedure Written for Installation & Removal of Wire Wrap Connections.Addl Info to Be Sent as 30-day LER ML20140A5281985-12-19019 December 1985 Part 21 Rept Forwarding Ltr Sent to Customers Re Check Valves Missing Lock Welds on Hinge Supports or Hinge Support Capscrews,Per 851121 Request.List of Customers Receiving Ltr Also Encl ML20134Q1741985-08-29029 August 1985 Part 21 Rept Re Potential Maint Issues Associated w/Anker-Holth Snubbers.Owners of Anker-Holth Snubbers Will Be Informed of Problems & Sent Revs to Technical Instruction Manuals to Include Procedures for Seal & Fluid Maint ML20210G9921985-08-13013 August 1985 Part 21 Rept Re Failure of Isolated Worm Shaft Gear When Certain Critical Speeds Combined W/Repetitive Transfer of Actuator Clutch Mechanism from Manual (Handwheel) to Motor Drive Mode.Two Possible Solutions Noted ML20133K8931985-07-29029 July 1985 Deficiency & Part 21 Rept Re Error in Torrey Pines Bypass Limit Switch Setting Procedure Contributing to Limitorque Valve Operator Torquing Out.Bypass Limit Switch Setting Procedure Modified.Addl Info Will Be Provided in 30-day LER ML20132E5941985-07-29029 July 1985 Part 21 & Deficiency Rept Re Torrey Pines Technology Limitorque motor-operated Valve Bypass Limit Switch Setting Procedure.Initially Reported in 850725 Telcon.Procedure Will Be Modified ML20116N6141985-05-0303 May 1985 Part 21 & Deficiency Rept SSH-M-85/01 Re Defective Circuit Breakers for Recombiners Supplied by Rockwell Intl.Initially Reported on 841124.Equipment Deficiencies Corrected Prior to Installation.Rockwell Intl Requested to Follow Up Action ML20113A4291985-01-11011 January 1985 Part 21 Rept Re Incorrect Insulating Tape.Instructions Governing Handling of Incoming Matls Fully Adequate & If Followed,Would Have Prevented Error ML20108B6381984-11-0101 November 1984 Part 21 Rept Re Defect in Velan Swing Check Valves Causing Valve Disc to Improperly Align W/Valve Seat.All Four High Pressure Injection Swing Check Valves Will Be Disassembled During Refueling Outage & Valve Internals Modified ML20095G6011984-08-22022 August 1984 Part 21 Rept Re Defects in 18-inch SA-333 RHR Pipe.Samples of Defective Pipe Matl Being Shipped to Techninat Corp,Per Request.Defects Located in One Length of SA-333 Grade 6 Pipe ML20090H8501984-07-20020 July 1984 Supplemental Part 21 Rept Re Two Laminar Type Discontinuties Noted in Tioga Pipe Supply Co 18-inch Carbon Steel Pipes. Corrective Action Rept M-27 Issued to Bechtel on 840705 Requesting Identification of Cause ML20091N2381984-06-0101 June 1984 Part 21 Rept Re Four of Nine Westinghouse Supplied Replacement Items for Motor Control Ctrs Substantiated as Being Same or Equivalent to & Physically Interchangeable W/ Original Components ML20086U4251984-02-24024 February 1984 Followup Part 21 Rept Re Defective Mechanical Snubber Capstan Springs Supplied by Pacific Scientific.Affected Utils Listed.Purchasers Have Been Notified & Advised to Work Directly W/Pacific Scientific in Disposition ML20087H6091983-12-16016 December 1983 Part 21 Rept Re Nonconformance of Metal Hose Assemblies for Asme,Section Iii,Class 2 & 3 Svc.Status of Nonconforming Items Shipped Encl.All Customers Notified ML20077H7051983-08-0404 August 1983 Part 21 Rept Re 75 Components (Part P2073A) Lacking Conformance to Specs for Size & Fusion.Initially Reported on 830718.Conditions Which Allowed Erroneous Shipment Corrected ML20079R1081983-06-17017 June 1983 Part 21 Rept Re Adequacy of Fittings Supplied by Tube-Line Corp Through Capitol Pipe & Steel Products Co for Use on New Auxiliary Feedwater Headers of Steam Generators.Flanges Not heat-treated as Required by Matl Specs 1997-05-27
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20217K1231999-10-14014 October 1999 Revised Positions for DBNPS & Pnpp QA Program ML20217D5441999-09-30030 September 1999 Monthly Operating Rept for Sept 1999 for Davis-Besse Nuclear Power Station.With ML20217D1261999-09-30030 September 1999 Monthly Operating Rept for Sept 1999 for Monticello Nuclear Generating Plant.With ML20211R0811999-08-31031 August 1999 Monthly Operating Rept for Aug 1999 for Davis-Besse Nuclear Power Station,Unit 1.With ML20216E7031999-08-31031 August 1999 Monthly Operating Rept for Aug 1999 for Monticello Nuclear Generating Plant.With ML20211B0271999-08-13013 August 1999 SER Accepting Second 10-year Interval Inservice Insp Requests for Relief RR-A16,RR-A17 & RR-B9 for Plant, Unit 1 ML20210Q0521999-08-0404 August 1999 Safety Evaluation Approving Relief Request 10 to License DPR-22 Per 10CFR50.55a(g)(6)(i).Inservice Exam for Relief Request 10,Parts A,B,C,D & E Impractical & Reasonable Assurance of Structural Integrity Provided ML20210Q6611999-07-31031 July 1999 Monthly Operating Rept for July 1999 for Monticello Nuclear Generating Plant.With ML20210Q8541999-07-31031 July 1999 Monthly Operating Rept for July 1999 for Davis-Besse Nuclear Power Station,Unit 1.With ML20209E6231999-06-30030 June 1999 Monthly Operating Rept for June 1999 for Davis-Besse Nuclear Power Station,Unit 1.With ML20209F7901999-06-30030 June 1999 Monthly Operating Rept for June 1999 for Monticello Nuclear Generating Plant.With ML20195K2871999-06-16016 June 1999 Safety Evaluation Accepting Licensee Response to GL 95-07, Pressure Locking & Thermal Binding of Safety-Related Power-Operated Gate Valves ML20195H0351999-05-31031 May 1999 Monthly Operating Rept for May 1999 for Monticello Nuclear Generatintg Plant.With ML20195F4871999-05-31031 May 1999 Monthly Operating Rept for May 1999 for Davis-Besse Nuclear Power Station,Unit 1.With ML20207E8011999-05-19019 May 1999 Non-proprietary Rev 2 to HI-981933, Design & Licensing Rept DBNPS Unit 1 Cask Pit Rack Installation Project ML20207F4351999-05-0404 May 1999 Rev 1 to DBNPS Emergency Preparedness Evaluated Exercise Manual 990504 ML20206N1721999-04-30030 April 1999 Monthly Operating Rept for Apr 1999 for Monticello Nuclear Generating Plant.With ML20206M6341999-04-30030 April 1999 Monthly Operating Rept for Apr 1999 for Davis-Besse Nuclear Station,Unit 1.With ML20205N0861999-04-12012 April 1999 Safety Evaluation Re Licensee Response to GL 95-07, Pressure Locking & Thermal Binding of Safety-Related Power-Operated Gate Valves ML20205P5701999-03-31031 March 1999 Monthly Operating Rept for Mar 1999 for Monticello Nuclear Generating Plant.With ML20205M2931999-03-31031 March 1999 Monthly Operating Rept for Mar 1999 for Davis-Besse Nuclear Power Station.With ML20204H4951999-03-18018 March 1999 SER Concluding That Licensee Established Acceptable Program to Verify Periodically design-basis Capability of safety-related MOVs at Monticello.Therefore Staff Concludes Licensee Adequately Addressed Action Required in GL 96-05 ML20207J1461999-02-28028 February 1999 Monthly Operating Rept for Feb 1999 for Davis-Besse Nuclear Power Station,Unit 1.With ML20205G7391999-02-28028 February 1999 Monthly Operating Rept for Feb 1999 for Monticello Nuclear Generating Plant.With ML20202F7901999-01-25025 January 1999 1999 Four Year Simulator Certification Rept for MNGP Simulation Facility ML20199H5931999-01-20020 January 1999 Safety Evaluation Accepting Thermo-Lag Re Ampacity Derating Issues for Plant ML20199E4871999-01-0606 January 1999 SER Accepting Licensee 951116,960214 & 0524 Responses to NRC Bulletin 95-002, Unexpected Clogging of Residual Heat Removal Pump Strainer While Operating in Suppression Pool Cooling Mode ML20199E2501998-12-31031 December 1998 Monthly Operating Rept for Dec 1998 for Davis-Besse Nuclear Power Station,Unit 1.With ML20206B0101998-12-31031 December 1998 1998 Annual Rept for Firstenergy Corp, for Perry Nuclear Power Plant & Davis-Besse Nuclear Power Station.Form 10-K Annual Rept to Us Securities & Exchange Commission for Fiscal Yr Ending 981231,encl ML20205H0561998-12-31031 December 1998 Northern States Power Co 1998 Annual Rept. with ML20199F6211998-12-31031 December 1998 Monthly Operating Rept for Dec 1998 for Mngp.With ML20205K5781998-12-31031 December 1998 Waterhammer Phenomena in Containment Air Cooler Swss ML20204J6751998-12-31031 December 1998 1998 Annual Rept for Dbnps,Unit 1,PNPP,Unit 1 & BVPS Units 1 & 2 ML20198P0691998-12-28028 December 1998 Safety Evaluation Concluding That NSP Proposed Alternative to Paragraph III-3411 of App III to 1986 Edition of Section XI of ASME Code Provides Acceptable Level of Quality & Safety.Alternative Authorized ML20198D0751998-12-10010 December 1998 Safety Evaluation Supporting NSP Proposed Change to EOPs to Use 2/3 Core Height as Potential Entry Condition Into Containment Flooding ML20198B2531998-11-30030 November 1998 Monthly Operating Rept for Nov 1998 for Monticello Nuclear Generating Plant.With ML20197J3441998-11-30030 November 1998 Monthly Operating Rept for Nov 1998 for Davis-Besse Nuclear Power Station,Unit 1.With ML20195E3691998-11-12012 November 1998 Safety Evaluation Concluding That Licensee USI A-46 Implementation Has Met Purpose & Intent of Criteria in GIP-2 & Staff Sser 2 for Resolution of USI A-46 ML20195D0001998-10-31031 October 1998 Monthly Operating Rept for Oct 1998 for Davis-Besse Nuclear Power Station,Unit 1.With ML20195D2381998-10-31031 October 1998 Monthly Operating Rept for Oct 1998 for Monticello Nuclear Generating Plant.With ML20155B6781998-10-28028 October 1998 Safety Evaluation Accepting Proposed Reduction in Commitment Changes in QA Program Matl Receipt Insp Process ML20198J4451998-10-22022 October 1998 Rev 2 to SIR-97-003, Review of Test Results of Two Surveillance Capsules & Recommendations for Matls Properties & Pressure-Temp Curves to Be Used for Monticello Rpv ML20154L3471998-09-30030 September 1998 Monthly Operating Rept for Sept 1998 for Monticello Nuclear Generating Plant.With ML20154H5801998-09-30030 September 1998 Monthly Operating Rept for Sept 1998 for Davis-Besse Nuclear Power Station,Unit 1.With ML20153F0511998-09-21021 September 1998 Rev 2 to MNGP Colr,Cycle 19 ML20153E9361998-09-0808 September 1998 Rev 1 to MNGP Colr,Cycle 19 ML20151W1611998-08-31031 August 1998 Monthly Operating Rept for Aug 1998 for Dbnps.With ML20153B0861998-08-31031 August 1998 Monthly Operating Rept for Aug 1998 for Monticello Nuclear Generating Plant.With ML20237E3171998-08-21021 August 1998 ISI Summary Rept of Eleventh Refueling Outage Activities for Davis-Besse Nuclear Power Station ML20237B1681998-07-31031 July 1998 Monthly Operating Rept for July 1998 for Davis-Besse Nuclear Power Station,Unit 1 1999-09-30
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REPORT NO.: 10CFR21-0062 DATE: May 11, 1992 6
10CFR21 REPORTING OF DEFECTS AND NON-CONFORMANCE COMPONENT: EMD TURBOCHARGER PLANETARY BEARING SHAFT SYSTEM: D:ESEL GENERATORS WITH EMD 645 SERIES ENGINES USING TURBOCHARGERS THAT WERE REMANUFACTURED FROM MAY, 1991 TO JANUARY, 1992 CONCLUSION: DEFECT IS REPOHTABLE IN ACCORDANCE WITH 10CFR21
[ ,
PREPARED BY: '//^b~- D \TE 5/IlhL Donald D. Gal,sazzi, Engineering Manager
/
APPROVED BY: '
DATE I!'i b M. Vann Mitchell, Qudlity Manager Post Office Box 1928. Rocky Mourt, North Carchna 27802-1928. Phone: (919) 977-2720 9205210236 920511 m (510) 92&o725. N (919) 46-3830 DR ADDCK 05000263 PDR _
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REPORT NO.: 10CFR21-0062 DATE: MAY-11, 1992 PAGE: 1 OF 4 SMi!1ARY This is-a-follow-up report to MNW Power Systems' notification to Mr.:-Thomas Murley of the NRC dated 4/17/92 (see Exhibit 1).
MKW Power Systems received protiminary notification on-4/15/92
< from Electro-Motive Division of GM (EMD) about a-possible manu-facturing-defect with the engine turbocharger-planetary bearing shaft. ' Final notification was received on 5/11/92 and is contained in Exhibit 2. Or9 failure of a remanufactured turbocharger was attributed to improper grinding of the planetary
, bearing shaft by tho manufacturer. Users of turbochargers with suspect planeta y bearing shafts have been determined and will be notified accordingly.
- - C011P_QREtLI EMD turbochargers that were remanufactured from May 1991 to January 1992.
C_QSIQdERS AFFECTED
-The users affected by this notification are listed below:
~ CQSIQMER IMRB_Q_SM1 f1KW_QERER_ttQ .
Ebasco - Laguna Verde CFE-Division 3 73K1-1207 502971
- 1. E. PIMS 76K1-1127 6089 Korea Electric Power --KORI 11 79L1-1239 -503465 Toledo Edison - Davis-Besse 91C3-5012 503772 Northern States-Power - tiont i c e l l o 91L3-5067 505244 I
. . - < - - - ,. a
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REPORT NO.: 10CFR21-0062 DATE: MAY 11, 1992 PAGE: 2 OF 4
- DEEECIL
' Manufacturer produced thrs pienetary bearing shaftF USing a centerless grinding proc-ess (which is not to EMD specifications).
'1D 's process specification reauires that the shafts be ground on centers. A failed sna#t, which was produced improperly, was lobed and out-of-round.
CORRECI_LY.E_ACll.ON Turbochargers.with serial numbers listed under " Customers Affected" should perform one u" the following.
- 1. Remove the turbocharger, disassemble the carrier bearing-support and bearing assembly, idler gear assembly, and remove the gear drive assembly. With the planetary gear assembly r enov e d , inspect the planetary bearing abafts, if the shafts are the centerless ground type, the planet carrier assembly should be replaced. If the shafts have the
-centering holes, then the turbocharger can be reassembled and replaced on the engine.
- 2. Remove the turbocharger and ship t- 'O for inspection / repair.
- 3. Remove turbocharger a.d replace with a. qualified Utex assembly. EMD will make turbochargers meeting the critical emergency start criteria available to be cha"3ed out at the customer's convenience.
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- -l REPORT NO.
- 10CFR21-0062 '
_,_ DATE: MAY 11, 1992 ,
PAGE: 3 OF 4-I t
EXHIBIT 1 *
(2 pages) .,
3 NOTIFICATION TO NRC DATED 4/17/92 j
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MKW '_- r r J*- ,
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Antil l~, 1992 Mr. Thomas Murl /
Director - Offic' af Nuclear Reactor Regulation 11555 Rockvilla /ike Rockville, Maryland 20852
Subject:
Potential Reportable Defect for EMD turbocharger
Dear Sir:
On 4/15/92, Mhw Power Sys tems received notification f rom Electro-Motive Division o' General Motors Corporation (EMD) of a pcssible manufacturing defect with their turbochargers which are used on their 645 series dies 31 engine. This notification is very preliminary and we do not know the details of the potential defect at this time.. The turbochargers in questions are shown on the attached list.
We are in the proccas of reviewing our files to determine the current location of these turbochargers. Most of the but we suspect on turbochargers that the list were shipped to commercial users, some were shipped to nuclear users.
Upon receipt of more thorougn information from EMD we will L issue a formal report.
Sincerel'*, _
MKW POWER SYST'EMSc INC.
8). N ,_ [ M M. Vann Mitchell Quality Manager dg attachment l
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MUe: /np Oi:
Post Office Box 1928 Aocky Mount. North Carohna 27802-1928 e Phone (919) 977-?720
'* TWX: (510) 929-0725 . F A X: 19191446-3830
3ORTED BY MKW 000,1 EMD GRDER # ORDER DATE
' ART # SERIAL #
UTEX OR MKW PO #
R&R HA91015001 1/15/91 9525864 73K1 - 1207 HA9110B002 4/18/91 R 65959 9529908 79Ki-1006 BD31093005 R 66497 4/3/91 8377566 LG91122007 91 83-5044 U 5/02/91 9526864 66565 HA91137001 91 C3-6039 U 5/17/91 X911279 66694 BD91150009 91F3-5006 U S6785 5/30/91 8368598 BD91150009 90M3 5032 U 68944 3/30/91 836 1 36 LG91161017 9183-5048 U 66944 5/31/91 8370751 E091183003 9183-5047 'U 68948 7/02/91 8377586 LG91214012 91 E3-5070 0 8/02/91 9529908 67206 LG91214013 91G3-5016 U 8/02/91 9521991 67264 LG91247023 91 G3-5017 U 9/04/91 9523864 67204 CA91232001 91J3-5052 U 67281 B/20/91 9526864 BD91232013 91 G3-6011 U 8/20/91 9536274 67368 LG91246016 91 03 - 5002 U 9/03/91 9521991 87390 HA91274001 91H3-5022 U 67410 10/01/91 9526867
.G91261017 73K1 -1006 R 9/16/91 6377666 67547 HA91281001 91F3-5033 U 8755t 9/18/91 6370751 HA91276001 9103 -6023 0 67801 10/03/91 9526864 91 K3-5040 HA91323002 11/19/91 U 87845 8377536 BSJ3-5001 HA91323001 R 67883 11/19/91 8370751 89J3-6044 LG91536030 R 67883 12/02/91 9526967 76K1 -1057 LG91336030 R 67899 12/02/91 952E867 LG91301026 76K1-1127 R 67899 10/28/91 63775S8 91H3-5008 U 67902 trAD Power Products SeMee 15-Apr-92
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.l REPORT NO.:- 10CFR21-0062. l
",,. - OATE: MAY 1 1 ', 1992' PAGE: 4 OF 4 l
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EXHIBIT 2 (2 pages)
EMD-NOTIFICATION A4..
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,SENT BY. 3-11-92 8:20Asi YKR Po".ER5YsTDis-919 4w 1134 :- 1/ 2
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$2O5 0. y$-r =. -$6
& fj{ ..m. _ . . = 0I turno Mouvt By o.mwn. o .m cen.r.%= cow.m t. o,.noe moi. sy n ace moco x
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g2 ' ^ ' " ' ' \.f. n.i my B, 1992
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rc Mr. Don Galeazzi '; il MKW F0WER SYSTEMS, INC. ... - k Station Squaro, suite 100 B g ;:C# _~~ " . .
301 South Church Strost
.~.ocky Mount, NC 27004-1928 1
SUBJECT! M tiDTARY BEARING 8 Halls. TURDOCEARQER
Dear Mr. Galeazzi:
Turbocharger planetary bearing shaf ts supp'.iod by a vendor aro suspected of causing a failure on one remanufactured turbocharger.
! The cause of failure van deterr.ined to be a planetary bearing ehaCt lobed and over the roundness spee. Further invnctigation revealed that the vendor produced the planetary bearing shafts using a centeriess grinding process (which is not to E'lD print spec).
L EMD's procass specification requires that the chafts be ground on l centers.
l The following turbes in nuclear standby may have a planetary hearing shaft produced by the centerless grinding process:
i Seria_1 Number Custor y
- 1) 73K1-1207 EBASCO
> 2) 75K1-1057 Wisconsin Electric 76K1-1127 GE - P.I.M.S.
l 3)
() 79L1-1239 Korea Electric Power S) 91c3-5012 Toledo Edison
- 6) 91L3-5067 Northern States FoWor Thi's does not indicate that centerless ground shaftn are i
defectivo, but those turbos uhould bo inspected.
d4W NT MWW fog- due>uwC) Continued on Page 2 MWt#J WwL 0-a <- / CEP WE rs%
3-11-92 W,r0MER5iSTENS-91044dJ 11d4~ :: #2
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m Hr. Den Galeazzi MKW Power Systems, Inc.
May 8 1947 Pag 2 Doponding on the customar and his operating conditions, one of the following scenarios could be used to insure the turbo reliability:
- 1. Remove the turbo, citassemble the carrier bearing support and bearing assembly, idler gear ass s bly, and remove the gear drive assembly. With the planetary gear assembly removed, inspact the planetary bearing sharts. If the shaf ts are the centerless ground type, the planet carrier arsembly should be replaced. If the shafts have the centering holes, than the turbo can be roascombled and replaced on the engine.
- 2. Remove the turbo ard ship to EMD for inspection /rcpair.
- 3. Remove turbo and replace with a qualified Utex assembly.
EMD will nake turbochargers seeting the critical emergency start critaria available to be changed out at the customor 's cor.venience.
Again, it chou?4 be stressed that only one turbo failure out of approximately 1400 turbos rebuilt has been attributed to the centerless ground planet;ry bearing shaft.
\;e will continuo to work closely with you to resolve this issue. If you have additional questions, please advise, s' !
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M. A. Lagomarcino i
Manager Powcr Products Servico CJ F/ MAI,:Vad
! cc: C. J. Farber l