ML20132D976
| ML20132D976 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 07/05/1985 |
| From: | Kintner L Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8507170593 | |
| Download: ML20132D976 (13) | |
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July 5, 1985 Docket No. 50-416 Licensee: Mississippi Power & Light Company (MP&L)
Facility: Grand Gulf Nuclear Station, (GGNS) Unit 1 I
Subject:
Sumary of May 31, 1985 Meetina Regarding TDI Diesel Generator Design Review an<i Quality Revalidation (OR/QB) Report.
The purpose of the. meeting was to hear the licensee's status and plans for comple-tion of implementation of recomendations in the DR/0R Report for Grand Gulf Unit 1.
The DR/QR Report, prepared by the TDI Diesel Generator Owners Groups was trans-I mitted to the NRC without endorsement by MP&L on November 28, 1984.
is a list of attendees.
Enclo'.ure 2 is a copy of slides presented by MP&L in the meeting.
,The NRC staff questioned whether the recomendations in the GGNS DR/OR prepared by l
the TDI Owners Group were being reviewed and implemented by MP&L in a timely manner, in light of the second failure of a linear reactor, which is a component in the generator excitation circuit. The first failure occurred in June 1984 on a Division I diesel generator, due to design deficiencies which caused overheating in the control panel containing the component.
The November 1984 DR/0R Report recomended that.the linear reactors be remounted so that cooling slots would be oriented in accord with the manufacturer's recommendations and that the cabinet be ventilated.
Although the linear reactors in Division I were replaced, this design change was not implemented by March 1985 when a second failure of a linear reactor occurred on the Division II diesel generator. MP&L has now issued a design change package for both diesel generators with a scheduled completion date of modification of December 1, 1985. The new linear reactors in Divisions I and II are expected to have a lifetime'beyond December 1985, based on previous operating experience.
However, staff questioned whether correcting the design deficiency of inadequate cooling should not have been implemented sooner thereby preventing the second failure and preventing potential ~ future failures. Staff questioned whether other recommendations in the DR/QR, particularly those involving equipment modifications, should also be implemented sooner than required by the operating license condition prior to startup following the first refueling (now estimated for August 1,1986).
MP&L presented a description of implementation of ORf0R recomendations, as sum-marized on pages 4 through 8 of Enclosure 2.. The 417 recomendations have been computerized.. Two experienced diesel engineers on the plant staff have reviewed the DR/QR Report. About 1670 engineering man-hours have been expended to date in the implementation of recomendations or justification for not implementing recom-
.mendations. The status of implementation (page 7 of Enclosure 2) shows that out of 68 recomendations to modify equipment, 6 have been implemented, 31 have been -
approved and will be implemented and 31 are still under evaluation. MP&L expects to have its review completed and a submittal made to the NRC by September 30, 1985.
1 8507170593 850705 PDR ADOCK 05000416 8
PDR i
e MP&L stated that preventative maintenance on the TDI diesel generators was per-formed in an April 1985 6-week forced outage.
Implementation of some recommenda-tions will be made in the Fall 1985 planned outage (October - November 1985) and the remainder in the first refueling outage (June, July, August 1986).
In response to staff questions, MP&L stated:
(1) TDI Owners Group Phase I recommendations, excepting a tear down inspec-tion of the diesel engine, will be implemented for the Division II diesel generator prior to startup following the first refueling (Sept 1986). MP&L expects to.iustify that a tear down inspection is not needed.
(2) A response to 10 CFR Part 21 reports on TDI diesel generators will be provided in the MP&L September 30, 1985 submittal regarding DR/QR recom-mendations.
(3) The DR/0R recommendations will be evaluated to determine priority for implementation.
(4) An interim modification will be considered to prevent continued oper-ation of linear reactors at temperatures in excess of the design temperature.
L. L. Kintner, Project Manager Licensing Branch No. 4 Division of Licensing cc: See next page 7
DL.LB #4 DL(Q#4 LKittner/,1j EA ensam 6/47/85
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,o Mr. Jackson B. Richard Mississippi Power & Light Company Grand Gulf Nuclear Staiton cc:
Robert B. McGehee, Esquire The Honorable William J. Guste, Jr.
Wise, Carter, Child, Steen and Caraway Attorney General P.O. Box 651 Department of Justice Jackson, Mississippi 39205 State of Louisiana Baton Rouge, Louisiana 70804 Nicholas S. Reynolds, Esquire Bishop, Liberman, Cook, Purcell Mr. Oliver D. Kingsley, Jr.
and Reynolds Vice President, Nuclear Operations 1200 17th Street, N.W.
Mississippi Power & Light Company Washington, D. C.
20036 P.O. Box 23054 Jackson, Mississippi 39205 Mr. Ralph T. Lally Manager of Quality Assurance Office of the Governor Middle South Services, Inc.
State of Mississippi P.O. Box 61000 Jackson, Mississippi 39201 New Orleans, Louisiana 70161 Attorney General Mr. Larry F. Dale, Director Gartin Building Muclear Licensing and Safety Jackson, Mississippi 39205 Mississippi Power & Light Company P.O. Box 23054 Mr. Jack McMillan, Director Jackson, Mississippi 39205 Solid Waste Mississippi State Board of Health Mr. R. W. Jackson, Project Engineer 880 Lakeland Bechtel Power Corporation Jackson, Mississippi 39206 15740 Shady Grove Road Gaithersburg, Maryland 20760 Alton B. Cobb, M.D.
State Health Officer Mr. Ross C. Butcher State Board of Health Senior Resident Inspector P.O. Box 1700 U.S. Nuclear Regulatory Commission Jackson, Mississippi 39205 Route 2, Box 399 Port Gibson, Mississippi 39150 President Claiborne County Board of Supervisors Regional Ad.ninistrator, Region II Port Gibson, Mississippi 39150 U.S. Nuclear Regulatory Commission, 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 Mr. J. E. Cross, General Manager Grand Gulf Nuclear Station Mississippi Power & Light Company P.O. Box 756 Port Gibson, Mississippi 39150 l
Attendees May 31, 1985 Meeting with Mississippi Power & Light Company Name Affiliation L. L. Kintner NRC/NRR/DL/LB-4 L. F. Dale MP&L T. H. Cloninger MP&L E. L. Murphy NRC C. Berlinger NRC
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BACKGROUND TDI DIESEL GENERATOR OWNERS GROUP FORMED IN DECEKBER 1983 TO ADDRESS OPERATIONAL AND REGULATORY ISSUES RELATIVE TO TDI D/Gs USED IN NUCLEAR POWER STATIONS
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NRC APPROVED MPSL ACTIONS AND ISSUED FULL POWER LICENSE AUGUST 31, 1984.
LICENSE REQUIRES MPEL TO ADDRESS ALL TDI D/G DR/0R REC 0KMENDAT10NS PRIOR TO RESTART FROM FIRST
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REFUELING OUTAGE OWNERS GROUP COMPLETED THE GGNS SPECIFIC DESIGN REVIEW /0UALITY REVALIDATION (DR/0R) REPORT (REVISION 0) ON OCTOBER 23, 1984 MP&L TRANSMITTED REVISION 0 0F THE GGNS DR/0R REPORT TO THE NRC ON NOVEMBER 28, 1984 OWNERS GROUP TRANSMITTED THE FINAL GGNS DR/0R PEPORT TO i
MPal IN FEBRUARY 1985 i
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TDI OWtERS GROUP DESIGN REVIEW AND 00AllTY FEVAllDATION (DR/OR) PROGRAM
%'O PHASE PROGRAM (1) PHASE I ADDRESSED RESOLUTION OF 16 IDEhTIFIED POTENTIAL GBERIC PROBLEPS ON PRIORITY BASIS (2) PHASE 11 ADDPESSED SELECTED ENGINE COMPONEhTS HAVING POTBRIAL FOR AFFECTING D/G OPERATION 4
FINAL EPORTS FOR THE 16 PHASE I IlBS SUBMITIED BY THE OWNEPS GROUP TO THE NRC FOR REVI&l - MPal HAS ADDESSED THE PRIORITY ITEMS IN PHASE I AND IMPL& BRED AN AUGPORED MAINTENANCE / SURVEILLANCE PROGRAM FINAL PLANT SPECIFIC DESIGN REVIEW /0UALITY EVALIDA-
~ TION EPORT SUEMllTED TO INDIVIDUAL UTILITIES ADDPESS-ING PHASE I AfD 11 COW 0fERS (164 COMPONEhTS EXTBi-SIVELY INVESTIGATED), FPat CURPB ULY EVALUATING AND RESOLVING PHASE II ECOP!ECATIONS PROGP#1 INCLUDED SRCIFIC C0FFONENT TESTS AND INSPEC-TIONS. FP&L TDI D/Gs HAVE Uf0ERGONE SEVEPAL DIS-ASSDELIES AND INSPECTIONS, EXIBSIVE TESTING HAS BEEN PERF0PfED SATISFACTORILY I--
GGNS DR/OR REPORT CONCLUSIONS TE GGNS TDI D/Gs PESENTLY INSTALLED AE FULLY CAPABLE E ELIAELY ERFORMING TEIR INTENDED SAFETY FUNCTION i
TE EPORT ECOP?ENDATIONS WERE NOT EQUIREENTS, BUT ADOPTION OF TE ECOPENDATIONS h0VLD GIVE ADDED ASSURANCE THAT TE GGNS TDI D/Gs WOULD PERFORM TEIR INTENDED FUNCTION FOR THE LIFE OF TE PLANT IN ACCORDANCE WITH THE INTENT OF TE OWNERS GROUP PROGRAM PLAN, TE RESOLUTION OF THE EC0FENDATIONS WOULD BE SUBSE00EhT TO C0riERCIAL PLANT OPERATION, BUT PRIOR TO RESTART FROM FIRST PLANT REFUELING OUTAGE 4
TE UTILITY COULD PROPOSE ALTERNATE EANS OF r
INSURING PH. LABILITY OF TE TDI D/Gs, 1
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i MPal ACTIONS COMPUTERIZED DATABASE CREATED TO TRACK DR/0R RECOMMENDATIONS 2 EXPERIENCED DIESEL ENGINEERS ON PLANT STAFF 1 FULL MECHANICAL CREW AND SilPERVISOR PERFORMS SURVEILLANCE / MAINTENANCE' ACTIVITIES ON DIESEL ENGINES 2ND FULL MECHANICAL CREW AND SUPERVISOR AVAILABLE IF AROUND-THE-CLOCK EFFORT IS REQUIPED ON DIESEL ENGINES CREWS AND SUPERVISORS HAVE BEEN VENDOR TRAINED AND HAVE EXTEf!SIVE DIESEL EXPERIENCE, MEMBERS OF THE CREWS PERFORMED THE THREE MAJOR DISASSEMBLIES AND REASSEMBLIES DIESEL ENGINEERS HAVE REVIEWED GGNS DR/0R REPORT APPROXIMATELY 10 TO 15 ENGINEERING PEPSONNEL INVOLVED IN REVIEW AND RESOLUTION OF DR/0R RECOMMENDATIONS.
TQ.DATE, APPROXIMATELY 1,670 ENGIFEERING MAN HOURS HAVE BEEN EXPENDED ON THE DR/0R EFFORT CURRENT ACTIONS INVOLVE THE CONTINUED DEDICATION OF D/G DISCIPLINE PERSONNEL TO OBTAIN RESOLUTION OF TilE REMAINING DR/0R RECOMMENDATIONS, PESOLUTION WILL BE OBTAINED THROUGH THE IMPLEMENTATION OF THE RECOMMENDATIONS OR BY PROVIDING JUSTIFICATION FOR THOSE ITEMS NOT IMPLEMENTED
1, DR/0R DATABASE 417 DP./0R PEC&TMATION IDENTIFIED EACH ECOWB0ATION ASSIGED TO " ACTIVE TYPE" AND
' ACTION CODE" CATEGORIES ACTION TWES AE:
ADMINISTRATIVE INSPECTIONS MINTENANCE MDDIFICAT10tG OPEPATIONS i
ACTION CODES APE:
1 - ECOWBSATION IMPLEENTED
' 2 - MCOWB0ATION APPROVED AND WILL EE IPPLBMED 3 - ECOWENDATION P0DIFIED AND IMPLBMED 4 - ECOMU0ATON PDDlFIED AND WILL BE IWLBMED 5 - PECOMOOATION NOT APPROVED AND WILL NOT BE IPPL9ENTED 6 - ECOMMATION UEDER EVALUATION l
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STATUS OF IMPLEMENTATION OF DR/0R REPORT RECOMMENDATIONS
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417 TOTAL RECOMMENDATIONS 139 RECOMMENDATIONS IMPLEMENTED 32 RECOMMENDATIONS ACCEPTED AND WILL BE IMPLEMENTED 17 RECOMMENDATIONS MODIFIED AND IMPLEMENTED 229 RECOMMENDATIONS UNDER DETAILED EVALUATION OVER 40% OF THE RECOMMENDATIONS HAVE BEEN ADOPTED OR WILL BE AD0PTED IN PRESENT OR MODIFIED FORM l
j EVALUATION IS CONTINUING ON REMAINING ITEMS i
MPSL AND NRC MUTUAL AGREEMENT ON SUBMITTAL OF RESPONSE T0 e
j GGNS CR/0R BY SEPTEMBER 1985
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STATUS ACTION CODE ACTIONTYPE 1
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4 5-6 TOTAL ADMIN 8
5 13 INSPECTIONS 21 1
64 86 P%IMENANCE 63 12 115 190 P0DIFICATIONS 6 31 31 68 OPERATONS 41 5
14 60 TOTAL 139 32 17 229 417 NOTE: DVER 40% OF THE DR/0R REC 0WENDATIONS HAVE BEEN ACCEPTED AND HAVE BEEN OR WILL BE IPPL9 0 RED IN PPESENT OR MODIFIED F0W..
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CONCLUSIONS MP8L IS PURSUING EFFECTIVE AND TIMELY RESOLUTION OF THE DR/0R RECOMMENDATIONS FOR GGNS TO PROVIDE ADDITIONAL ASSURANCE OF EMERGENCY DIESEL GENERATOR RELIABILITY i
MPSL IS ANTICIPATING ISSUANCE OF THE GENERIC AND COMMANCHE PEAK LEAD ENGINE DR/0R SAFETY EVALUATION REPORTS BY THE NRC l
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MPal IS ON SCHEDULE FOR SUBMITTAL OF RESPONSE T0 i
RECOMMENDATIOFS ASSOCIATED WITH THE GGNS DR/0R REPORT BY SEPTEMPER 30, 1985 i
THE GGNS TDI D/Gs CONTINUE TO PERFORM THEIR INTENDED FUNCTION WITH A RELIABILITY OF APPROXIMATELY 98.5%
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July 5, 1985 MEETING
SUMMARY
DISTRIBUTION Docket-No(s-):7502416-NRC PDR Local PDR NSIC PRC System LB #4 r/f Attorney, OELD E. Adensam Proiect Manager L. L. Kintner Licensing Assistant M. Duncan NRC PARTICIPANTS L. Kintner E. L. Murphy C. Berlinger bcc: Applicant & Service List
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