|
|---|
Category:MEETING MINUTES & NOTES--CORRESPONDENCE
MONTHYEARML20196J2351999-06-29029 June 1999
Summary of 990617 Meeting with B&Wog & FTI Re B&Wog Emergency Operating Procedure Program.List of Meeting Attendees & Presentation Slides Encl
ML20206D6031999-04-30030 April 1999
Summary of 990318 Meeting with Firstenergy Nuclear Operating Co in Rockville,Maryland Re Review Schedule & Content of Proposed QA Topical Rept for Both Davis-Besse & Perry Facilities.List of Meeting Attendees Encl
ML20206D0951999-04-23023 April 1999
Summary of 990419 Meeting with Firstenergy Nuclear Operating Co in Rockville,Maryland Re Briefing New NRR Projects Personnel on History & Organization of Davis-Besse & Schedule & Priority of near-term Licensing Actions
ML20195D4551998-11-10010 November 1998
Summary of Operating Reactors Events Briefing 98-07 Held on 981021.List of Attendees,Significant Elements of Discussed Events & Significant Events That Were Identified for Input Into NRC Performance Indicator Program Encl
ML20236P6611998-07-10010 July 1998
Summary of 980708 Briefing 98-06 to Inform Senior Managers from Ocm,Edo,Aeod & NRR & Regional Ofcs of Selected Events That Occurred Since Last Brief on 980701.List of Attendees & Briefing Slides Encl
ML20198G1721997-12-18018 December 1997
Summary of 971215 Meeting W/Util in Rockville,Md to Discuss Quality Programs at Davis-Besse Nuclear Power Station.List of Meeting Participants & Meeting Handouts Encl
ML20216J9211997-09-12012 September 1997
Summary of 970821 Meeting W/Toledo Edison Co in Rockville,Md to Discuss Instrument Drift Study.List of Attendees & Handouts Encl
ML20137X9341997-04-16016 April 1997
Summary of 970403 Meeting W/Licensee to Discuss plant-specific Thermo-Lag Corrective Action Programs. List of Attendees & Handouts Encl
ML20134A9621997-01-22022 January 1997
Summary of 961204 Meeting W/Util in Rockville,Md to Discuss Proposed Merger Between Centerior Energy Corporation & Ohio Edison Company.List of Attendees & Info Handouts Encl
ML20059G7451993-11-0101 November 1993
Summary of 931101 Meeting W/Util in Rockville,Md Re Implementation of RG 1.97 for Steam Generator (SG) Pressure Instruments at Plant.List of Mtg Attendees & Handouts Encl
ML20149D6051993-09-15015 September 1993
Summary of 930708 Region III Annual Training Managers Conference in Glen Ellyn,Il.Purpose of Meeting to Provide Forum for Discussion on Rev 7 of Operator Licensing Examiner Stds & to Discuss Operator Licensing Issues
ML20056E2051993-08-0303 August 1993
Summary of 930729 Meeting W/Util in Rockville,Md Re Response to GL 90-06 Involving TS for Porv.List of Attendees & Handouts Encl
ML20128L5271993-02-12012 February 1993
Summary of 930115 Meeting W/Util in Rockville,Md Re Containment Penetration Bellows Tests in Response to NRC Info Notice 92-20
ML20126H9221992-12-30030 December 1992
Summary of 921230 Meeting W/Util in Rockville,Md to Discuss Upcoming Refueling Outage Plans & Recent Plant Performance
ML20126H9251992-12-30030 December 1992
Summary of 921215 Meeting W/Util in Rockville,Md to Discuss Proposed Amend That Would Allow Alternative to Safety Features Actuation Sys in Mode 6
ML20125A4161992-12-0202 December 1992
Summary of 921118 Meeting W/Util in Rockville,Md Re Status of Licensing Issues.Schedule for License Amend Requests Associated W/Upcoming Refueling Outage & Fire Protection Exemption Request Discussed
ML20125A7991992-12-0202 December 1992
Summary of 921119 Meeting W/Util in Rockville,Md Re Local Leak Rate Testing of Containment Penetration Bellows at Plant,Per NRC Info Notice 92-020
ML20247K0901989-05-23023 May 1989
Summary of 890517 Meeting W/Inpo Re Similarities & Differences Between Performance Indicator Programs.Detailed Discussion Encl
ML20247K1011989-05-16016 May 1989
Summary of 890517 Meeting W/Inpo in Bethesda,Md Re Similarities & Differences Between INPO & NRC Performance Indicators
ML20154N9081988-09-23023 September 1988
Summary of 880721 Meeting/Util in Rockville,Md Re Licensee App R Reappraisal Efforts.List of Meeting Attendees & Viewgraphs Encl
ML20207E2961988-07-28028 July 1988
Summary of 880714 Meeting W/B&W Owners Group Re Industry & NRC Actions to Resolve Issues Raised in Generic Ltr 87-12. List of Attendees,Viewgraphs & B&W Design Differences Encl
ML20196J7851988-03-10010 March 1988
Summary of Operating Reactors Events Meeting 88-10 on 880308.List of Attendees & Significant Elements of Events Discussed Encl
ML20148H6031987-12-15015 December 1987
Summary of ACRS DHR Sys Subcommittee 871117 Meeting in Washington,Dc Re Util Decision Not to Install Dedicated Blowdown Sys at Davis Besse & Implications of Diablo Canyon Loss of Shutdown Cooling Event.Viewgraphs Encl
ML20239A0231987-09-10010 September 1987
Summary of Operating Reactor Events Meeting 87-30 on 870908, Re Briefing Senior Managers from Nrr,Res,Aeod & Regional Ofcs on Events Which Occurred Since 870825 Meeting.Attendees List,Summary of Reactor Scrams & Viewgraphs Encl
ML20204E4951987-03-19019 March 1987
Summary of Operating Reactor Events Meeting 87-07 on 870316. List of Attendees,Events Discussed & Significant Elements of Events Presented & Summary of Presented Events That Will Be Input to NRC Performance Indicator Program Encl
ML20214L0051987-01-16016 January 1987
Summary of 870114 Allegation Review Board Meeting to Discuss Allegation RIII-87-A-0001.Meeting Participants Listed
ML20214P9371986-11-21021 November 1986
Summary of Operating Reactor Events Meeting 86-39 on 861110.List of Attendees,Events Discussed & Significant Elements of Events Encl
ML20214P6911986-08-0707 August 1986
Summary of ACRS Subcommittee on Davis-Besse 860627 Meeting in Washington,Dc Re Facility Restart
ML20205K2051986-07-21021 July 1986
Summary of ACRS 315th Meeting on 860710-12 in Washington,Dc Re Loss of Feedwater Event at Davis Besse Nuclear Power Station,Unit 1 & Review of Proposed Commission Policy Statement on Tech Specs
ML20214Q4781986-07-11011 July 1986
Summary of ACRS Regulatory Policies & Practices Subcommittee 860626 Meeting in Washington,Dc to Discuss Incident Investigation Team Review & Regulatory Process Re 850609 Event at Facility
ML20203H2181986-04-14014 April 1986
Summary of 860205 Meeting W/B&W Owners Group in Bethesda,Md Re B&W Owners Group Ongoing Programs & Activities & 850609 & 1226 Transients at Davis Besse & Rancho Seco,Respectively. Attendance List & Handout Incl
ML20195B4641986-03-15015 March 1986
Summary of ACRS Subcommittee on Davis Besse (Restart) 860206 Meeting in Washington,Dc Re Restart Activities Since 850609 Loss of Feedwater Event.Fr Notice,Agenda & List of Attendees Encl
ML20205J7411986-02-28028 February 1986
Summary of ACRS 310th Meeting on 860213-15 in Washington,Dc Re Review Studies Done & Procedures Proposed by Gpu Nuclear to Protect Against Inadvertent Criticality During Defueling of TMI-2 Core
ML20138P8841985-12-17017 December 1985
Summary of 851209 Meeting W/Util in Bethesda,Md Re Status Rept on Course of Action.List of Meeting Attendees & Info Presented by Util Encl
ML20138Q5501985-12-17017 December 1985
Summary of 851126 Meeting W/Util,Beta & Consolidated Controls Corp in Bethesda,Md Re Proposed Changes to Safety Features Actuation Sys.Viewgraphs & List of Attendees Encl
ML20136E2921985-11-27027 November 1985
Summary of ACRS Subcommittee on Davis-Besse 851004 Meeting in Oak Harbor,Oh to Review Course of Action Prior to Facility Restart.List of Items Discussed at Meeting & List of Attendees & Handouts Encl
ML20137Q3981985-11-21021 November 1985
Summary of 851104 Meeting W/Util,B&W & Essex Corp Re Auxiliary Feedwater Sys Mods & Changes.Viewgraphs & List of Attendees Encl
ML20137P7871985-11-21021 November 1985
Summary of 851016-17 Meetings W/Util & Impell Corp Re Licensee Auxiliary Feedwater Reliability Analyses.Viewgraphs & Proposed Outline of Reliability Analysis Rept Encl
ML20137P6401985-11-20020 November 1985
Summary of 851105 Meeting W/B&W Owners Group in Bethesda,Md Re Action Plan Developed in Response to Davis-Besse 850609 Loss of Feedwater Event.List of Attendees & Handouts Encl
ML20137P7041985-11-20020 November 1985
Summary of 851009 Meeting W/Util,Science Applications Intl Corp & Essex Corp in Bethesda,Md Re Issues Identified in NRC Re Preimplementation Audit Findings in Late Apr 1985.Summary of Commitments Encl
ML20136E2491985-11-0707 November 1985
Proposed Summary of ACRS Subcommittee on Regulatory Policies & Practices 851101 Meeting in Washington,Dc to Discuss SECY-85-208, Incident Investigation Program & Process Used to Investigate 850609 Event at Facility
ML20138P0081985-10-21021 October 1985
Summary of Operating Reactors Events Meeting 85-19 on 851007 W/Ofc Directors,Div Directors & Representatives on Events Which Occurred Since Last Meeting on 851007
ML20138M4151985-10-17017 October 1985
Summary of 851004 Meeting W/B&W Owners Group Transient Assessment & Availability Committees in Bethesda,Md Re Operating Experience of Operating Reactors & Plans to Improve Experience.Viewgraphs Encl
ML20133F9941985-10-0707 October 1985
Summary of Operating Reactors Events Meeting 85-16 on 850916 Re Briefing of Director,Div Directors & Representatives on Events Occurring Since 850909 Meeting.List of Attendees & Viewgraphs Encl
ML20133E4631985-10-0101 October 1985
Summary of Operating Reactors Events Meeting 85-17 on 850923.List of Attendees & Viewgraphs Encl
ML20134K8521985-08-0808 August 1985
Summary of ACRS ECCS Subcommittee 850731 Meeting w/B&W,C-E & Westinghouse in Washington,Dc Re Review of 10CFR50.46 & App K,Implementation of GE App K Analysis Effort & 850609 Incident at Facility
ML20128K7491985-07-12012 July 1985
Summary of Operating Reactor Events Meeting 85-11 on 850701. List of Attendees,Events Discussed,Significant Elements of Events & Assignment of Followup Review Responsibility Encl
ML20127N9021985-06-24024 June 1985
Summary of Operating Reactors Events Meeting 85-10 on 850612.Only 3 of 17 Items Scheduled for Completion by 850531 Remain Incomplete.List of Attendees,Summary of Events Discussed & Status of Previous Assignments Encl
ML20207N6001984-09-10010 September 1984
Summary of 840905 Meeting at NRC Region III Ofc Re Inservice Insp of HPI Sys
ML20155C9641984-08-0606 August 1984
Summary of 840612 Meeting W/Util in Bethesda,Md Re Program to Correct Fire Protection Deficiencies in Facility Fire Protection Features & non-compliance W/Respect to Requirements of App R to 10CFR50.Related Info Encl
1999-06-29
[Table view]
Category:MEETING SUMMARIES-INTERNAL (NON-TRANSCRIPT)
MONTHYEARML20196J2351999-06-29029 June 1999
Summary of 990617 Meeting with B&Wog & FTI Re B&Wog Emergency Operating Procedure Program.List of Meeting Attendees & Presentation Slides Encl
ML20206D6031999-04-30030 April 1999
Summary of 990318 Meeting with Firstenergy Nuclear Operating Co in Rockville,Maryland Re Review Schedule & Content of Proposed QA Topical Rept for Both Davis-Besse & Perry Facilities.List of Meeting Attendees Encl
ML20206D0951999-04-23023 April 1999
Summary of 990419 Meeting with Firstenergy Nuclear Operating Co in Rockville,Maryland Re Briefing New NRR Projects Personnel on History & Organization of Davis-Besse & Schedule & Priority of near-term Licensing Actions
ML20195D4551998-11-10010 November 1998
Summary of Operating Reactors Events Briefing 98-07 Held on 981021.List of Attendees,Significant Elements of Discussed Events & Significant Events That Were Identified for Input Into NRC Performance Indicator Program Encl
ML20236P6611998-07-10010 July 1998
Summary of 980708 Briefing 98-06 to Inform Senior Managers from Ocm,Edo,Aeod & NRR & Regional Ofcs of Selected Events That Occurred Since Last Brief on 980701.List of Attendees & Briefing Slides Encl
ML20198G1721997-12-18018 December 1997
Summary of 971215 Meeting W/Util in Rockville,Md to Discuss Quality Programs at Davis-Besse Nuclear Power Station.List of Meeting Participants & Meeting Handouts Encl
ML20216J9211997-09-12012 September 1997
Summary of 970821 Meeting W/Toledo Edison Co in Rockville,Md to Discuss Instrument Drift Study.List of Attendees & Handouts Encl
ML20137X9341997-04-16016 April 1997
Summary of 970403 Meeting W/Licensee to Discuss plant-specific Thermo-Lag Corrective Action Programs. List of Attendees & Handouts Encl
ML20134A9621997-01-22022 January 1997
Summary of 961204 Meeting W/Util in Rockville,Md to Discuss Proposed Merger Between Centerior Energy Corporation & Ohio Edison Company.List of Attendees & Info Handouts Encl
ML20059G7451993-11-0101 November 1993
Summary of 931101 Meeting W/Util in Rockville,Md Re Implementation of RG 1.97 for Steam Generator (SG) Pressure Instruments at Plant.List of Mtg Attendees & Handouts Encl
ML20149D6051993-09-15015 September 1993
Summary of 930708 Region III Annual Training Managers Conference in Glen Ellyn,Il.Purpose of Meeting to Provide Forum for Discussion on Rev 7 of Operator Licensing Examiner Stds & to Discuss Operator Licensing Issues
ML20056E2051993-08-0303 August 1993
Summary of 930729 Meeting W/Util in Rockville,Md Re Response to GL 90-06 Involving TS for Porv.List of Attendees & Handouts Encl
ML20128L5271993-02-12012 February 1993
Summary of 930115 Meeting W/Util in Rockville,Md Re Containment Penetration Bellows Tests in Response to NRC Info Notice 92-20
ML20126H9221992-12-30030 December 1992
Summary of 921230 Meeting W/Util in Rockville,Md to Discuss Upcoming Refueling Outage Plans & Recent Plant Performance
ML20126H9251992-12-30030 December 1992
Summary of 921215 Meeting W/Util in Rockville,Md to Discuss Proposed Amend That Would Allow Alternative to Safety Features Actuation Sys in Mode 6
ML20125A4161992-12-0202 December 1992
Summary of 921118 Meeting W/Util in Rockville,Md Re Status of Licensing Issues.Schedule for License Amend Requests Associated W/Upcoming Refueling Outage & Fire Protection Exemption Request Discussed
ML20125A7991992-12-0202 December 1992
Summary of 921119 Meeting W/Util in Rockville,Md Re Local Leak Rate Testing of Containment Penetration Bellows at Plant,Per NRC Info Notice 92-020
ML20247K0901989-05-23023 May 1989
Summary of 890517 Meeting W/Inpo Re Similarities & Differences Between Performance Indicator Programs.Detailed Discussion Encl
ML20247K1011989-05-16016 May 1989
Summary of 890517 Meeting W/Inpo in Bethesda,Md Re Similarities & Differences Between INPO & NRC Performance Indicators
ML20154N9081988-09-23023 September 1988
Summary of 880721 Meeting/Util in Rockville,Md Re Licensee App R Reappraisal Efforts.List of Meeting Attendees & Viewgraphs Encl
ML20207E2961988-07-28028 July 1988
Summary of 880714 Meeting W/B&W Owners Group Re Industry & NRC Actions to Resolve Issues Raised in Generic Ltr 87-12. List of Attendees,Viewgraphs & B&W Design Differences Encl
ML20196J7851988-03-10010 March 1988
Summary of Operating Reactors Events Meeting 88-10 on 880308.List of Attendees & Significant Elements of Events Discussed Encl
ML20148H6031987-12-15015 December 1987
Summary of ACRS DHR Sys Subcommittee 871117 Meeting in Washington,Dc Re Util Decision Not to Install Dedicated Blowdown Sys at Davis Besse & Implications of Diablo Canyon Loss of Shutdown Cooling Event.Viewgraphs Encl
ML20239A0231987-09-10010 September 1987
Summary of Operating Reactor Events Meeting 87-30 on 870908, Re Briefing Senior Managers from Nrr,Res,Aeod & Regional Ofcs on Events Which Occurred Since 870825 Meeting.Attendees List,Summary of Reactor Scrams & Viewgraphs Encl
ML20204E4951987-03-19019 March 1987
Summary of Operating Reactor Events Meeting 87-07 on 870316. List of Attendees,Events Discussed & Significant Elements of Events Presented & Summary of Presented Events That Will Be Input to NRC Performance Indicator Program Encl
ML20214L0051987-01-16016 January 1987
Summary of 870114 Allegation Review Board Meeting to Discuss Allegation RIII-87-A-0001.Meeting Participants Listed
ML20214P9371986-11-21021 November 1986
Summary of Operating Reactor Events Meeting 86-39 on 861110.List of Attendees,Events Discussed & Significant Elements of Events Encl
ML20214P6911986-08-0707 August 1986
Summary of ACRS Subcommittee on Davis-Besse 860627 Meeting in Washington,Dc Re Facility Restart
ML20205K2051986-07-21021 July 1986
Summary of ACRS 315th Meeting on 860710-12 in Washington,Dc Re Loss of Feedwater Event at Davis Besse Nuclear Power Station,Unit 1 & Review of Proposed Commission Policy Statement on Tech Specs
ML20214Q4781986-07-11011 July 1986
Summary of ACRS Regulatory Policies & Practices Subcommittee 860626 Meeting in Washington,Dc to Discuss Incident Investigation Team Review & Regulatory Process Re 850609 Event at Facility
ML20203H2181986-04-14014 April 1986
Summary of 860205 Meeting W/B&W Owners Group in Bethesda,Md Re B&W Owners Group Ongoing Programs & Activities & 850609 & 1226 Transients at Davis Besse & Rancho Seco,Respectively. Attendance List & Handout Incl
ML20195B4641986-03-15015 March 1986
Summary of ACRS Subcommittee on Davis Besse (Restart) 860206 Meeting in Washington,Dc Re Restart Activities Since 850609 Loss of Feedwater Event.Fr Notice,Agenda & List of Attendees Encl
ML20205J7411986-02-28028 February 1986
Summary of ACRS 310th Meeting on 860213-15 in Washington,Dc Re Review Studies Done & Procedures Proposed by Gpu Nuclear to Protect Against Inadvertent Criticality During Defueling of TMI-2 Core
ML20138Q5501985-12-17017 December 1985
Summary of 851126 Meeting W/Util,Beta & Consolidated Controls Corp in Bethesda,Md Re Proposed Changes to Safety Features Actuation Sys.Viewgraphs & List of Attendees Encl
ML20138P8841985-12-17017 December 1985
Summary of 851209 Meeting W/Util in Bethesda,Md Re Status Rept on Course of Action.List of Meeting Attendees & Info Presented by Util Encl
ML20136E2921985-11-27027 November 1985
Summary of ACRS Subcommittee on Davis-Besse 851004 Meeting in Oak Harbor,Oh to Review Course of Action Prior to Facility Restart.List of Items Discussed at Meeting & List of Attendees & Handouts Encl
ML20137P7871985-11-21021 November 1985
Summary of 851016-17 Meetings W/Util & Impell Corp Re Licensee Auxiliary Feedwater Reliability Analyses.Viewgraphs & Proposed Outline of Reliability Analysis Rept Encl
ML20137Q3981985-11-21021 November 1985
Summary of 851104 Meeting W/Util,B&W & Essex Corp Re Auxiliary Feedwater Sys Mods & Changes.Viewgraphs & List of Attendees Encl
ML20137P7041985-11-20020 November 1985
Summary of 851009 Meeting W/Util,Science Applications Intl Corp & Essex Corp in Bethesda,Md Re Issues Identified in NRC Re Preimplementation Audit Findings in Late Apr 1985.Summary of Commitments Encl
ML20137P6401985-11-20020 November 1985
Summary of 851105 Meeting W/B&W Owners Group in Bethesda,Md Re Action Plan Developed in Response to Davis-Besse 850609 Loss of Feedwater Event.List of Attendees & Handouts Encl
ML20136E2491985-11-0707 November 1985
Proposed Summary of ACRS Subcommittee on Regulatory Policies & Practices 851101 Meeting in Washington,Dc to Discuss SECY-85-208, Incident Investigation Program & Process Used to Investigate 850609 Event at Facility
ML20138P0081985-10-21021 October 1985
Summary of Operating Reactors Events Meeting 85-19 on 851007 W/Ofc Directors,Div Directors & Representatives on Events Which Occurred Since Last Meeting on 851007
ML20138M4151985-10-17017 October 1985
Summary of 851004 Meeting W/B&W Owners Group Transient Assessment & Availability Committees in Bethesda,Md Re Operating Experience of Operating Reactors & Plans to Improve Experience.Viewgraphs Encl
ML20133F9941985-10-0707 October 1985
Summary of Operating Reactors Events Meeting 85-16 on 850916 Re Briefing of Director,Div Directors & Representatives on Events Occurring Since 850909 Meeting.List of Attendees & Viewgraphs Encl
ML20133E4631985-10-0101 October 1985
Summary of Operating Reactors Events Meeting 85-17 on 850923.List of Attendees & Viewgraphs Encl
ML20134K8521985-08-0808 August 1985
Summary of ACRS ECCS Subcommittee 850731 Meeting w/B&W,C-E & Westinghouse in Washington,Dc Re Review of 10CFR50.46 & App K,Implementation of GE App K Analysis Effort & 850609 Incident at Facility
ML20128K7491985-07-12012 July 1985
Summary of Operating Reactor Events Meeting 85-11 on 850701. List of Attendees,Events Discussed,Significant Elements of Events & Assignment of Followup Review Responsibility Encl
ML20127N9021985-06-24024 June 1985
Summary of Operating Reactors Events Meeting 85-10 on 850612.Only 3 of 17 Items Scheduled for Completion by 850531 Remain Incomplete.List of Attendees,Summary of Events Discussed & Status of Previous Assignments Encl
ML20155C9641984-08-0606 August 1984
Summary of 840612 Meeting W/Util in Bethesda,Md Re Program to Correct Fire Protection Deficiencies in Facility Fire Protection Features & non-compliance W/Respect to Requirements of App R to 10CFR50.Related Info Encl
ML20126L2331981-05-0101 May 1981
Summary of 810429 Meeting W/Pwr Owners Group Re Thermal Shock to Reactor Pressure Vessels.All Parties Agree That Thermal Shock W/Subsequent Repressurization Is Safety Concern Needing Prompt Evaluation
1999-06-29
[Table view] |
Text
1 o
July 10,1998 L;Z)M
' MEMORANDUM TO: Jack W. Roe, Acting Director Division of Reactor Program Management FROM: Jo n . to hi Events Assessment and Generic Communications Branch Division of Reactor Program Management j
SUBJECT:
OPERATING REACTORS EVENTS BRIEFING JULY 8,1998 - BRIEFING 98-06
- On July 8,1998, we conducted an Operating Reactors Events Briefing (98-06) to inform senior -
managers from the Offices of the Commission, EDO, AEOD, NRR and regional offices of selected events that occurred since our last briefing on July 1,1998. Attachment i lists the attendees.' Attachment 2 presents the significant elements of the discussed event.
The statements contained in the attached briefing slides represent the best information currently available to the NRC. Future followup could produce new information that may alter the NRC's current view of the event discussed.
Attachments:
L 1. List of attendees
'2. Briefing slides cc w/atts:
See next page C'ONTACT: Beverly Sweeney, NRR (301) 415-1166 >
DISTRIBUTION (w/atts)
^ Central Files . PUBLIC LKilgore, SECY PECB R/F BSweeney WBurton l
l DOCUMENT NAME: G:\KAG\ORTRANS To receive a copy of this document, Indicate in the box: "C" = Copy without attachment / enclosure "E" =
Copy with attachment / enclosure "N" = No copy - %
OFFICE - PECB' lE PECB1 l PEC;(//L.] C/PE Q - lN f
J ppOF NAME BSweeney ,f WBurton Vf RDhnnlg JStotA ; 3 1 07/ Q /98 @) 07/ /$ /98 l DATE 07/}O /98 07/ 9 /98 OFFIC(AL RECORD COPY ,
. .3 pgp p t;PW" Y l fbb'/O '
9807170088 DR 980710 7pg ADOCK 05000346 ;
PDR i'y($
C.
l j
. I 98-06 l
OPERATING REACTORS EVENTS BRIEFING 98-06 i
LOCATION: 0-12B4, WHITE FLINT WEDNESDAY, JULY 8,1998,11:00 A.M.
l DAVIS-BESSE LOSS OF OFFSITE POWER ;
l PRESENTED BY:
EVENTS ASSESSMENT, GENERIC COMMUNICATIONS AND SPECIAL INSPECTION BRANCH DIVISION OF REACTOR PROGRAM MANAGEMENT, NRR Attachment 2 L
98-06 DAVIS-BESSE NUCLEAR PLANT i LOSS OF OFFSITE POWER DURING TORNADO JUNE 24,1998 PROBLEM O LOSS OF OFFSITE POWER (LOOP),
TURBINE / REACTOR TRIP, DAMAGE TO TURBINE l BUILDING, AND DAMAGE TO TOWERS ON ONE OF l THREE 345-KV LINES.
CAUSE i
O TORNADO l SAFETY SIGNIFICANCE O RISK SIGNIFICANCE DETERMINED TO BE RELATIVELY LOW (PRELIMINARY CCDP OF 2.8E-6).
t 1
CONTACT: B. BURTON, NRR/DRPM/PECB AIT: NO
REFERENCE:
10 CFR 50.72 #34435; SIGEVENT: TBD i PNO-3-98-035, 035A i
DAVIS-BESSE 98-06 O LOW RISK SIGNIFICANCE. LOW SBO CONTRIBUTION TO CDF (2% OF TOTAL CDF OF 1.3E-6/YR).
PLANT CONDITION O INITIALLY IN MODE 1 AT 99% REACTOR POWER. I REMAINED IN HOT STANDBY THROUGHOUT l EVENT.
J ,
DISCUSSION O SEQUENCE OF EVENTS: l l JUNE 24,1998 I i
~2040 - LIGHTNING STRIKES OBSERVED IN SWITCHYARD. LICENSEE STARTED BOTH EMERGENCY DIESEL GENERATORS (EDGs).
i f
1 i DAVIS-BESSE 98-06 2043 - TURBINE / REACTOR TRIP DUE TO LOOP.
PLANT WENT ON NATURAL CIRCULATION !
DUE TO LOSS OF REACTOR COOLANT PUMPS. AUXILIARY FEEDWATER SUPPLIED STEAM GENERATORS. l l
2118 - ALERT DECLARED.
- JUNE 26,1998 0200 - LICEN'SEE DOWNGRADED TO AN UNUSUAL EVENT BASED ON RESTORATION OF ONE OFFSITE POWER '
SOURCE.
1358 - LICENSEE EXITED UNUSUAL EVENT BASED ON RESTORATION OF SECOND OFFSITE POWER SOURCE.
r DAVIS-BESSE 98-06 i
EVALUATION I
O THREE 345-KV LINES SUPPLY OFFSITE POWER. l TWO LINES (OHIO EDISON AND LEMOYNE)
SUFFERED NO DAMAGE FROM STORM. THIRD LINE (BAYSHORE) HAD DAMAGE TO 11 TOWERS.
IN SWITCHYARD, DAMAGE TO NUMEROUS INSULATORS AND HIGH VOLTAGE CONNECTORS.
PART OF TURBINE BUILDING ROOF WAS BLOWN OFF.
l ALL NORMAL AND EMERGENCY TELE-COMMUNICATIONS WERE LOST. CORPORATE I MICROWAVE SYSTEM AVAILABLE.
O EDG #1 FAILED TO START FROM CONTROL ROOM.
STARTED LOCALLY. CAUSE WAS DEFECTIVE
- CONTACTS.
i- ,
. DAVIS-BESSE 98-06 9 EDG #1 DECLARED INOPERABLE DUE TO ELEVATED ROOM TEMPERATURES ABOVE 120 DEGREE LIMIT. CAUSE WAS FAILED DAMPER HYDRAULIC ACTUATOR, CAUSING DAMPER TO Fall OPEN. DAMPER WAS MANUALLY CLOSED AND FANS PROVIDED TO COOL ROOM. EDG #1 REMAINED FUNCTIONAL THROUGHOUT EVENT.
l 9 HIGH TEMPERATURE IN EDG #2 ROOM ALSO (ITS DAMPER ACTUATOR ALSO FAILED) BUT 4 REMAINED BELOW 120 DEGREE LIMIT.
G ONE MS SAFETY VALVE LIFTED BELOW SETPOINT AND DID NOT FULLY RESEAT.
HEADER PRESSURE REDUCED TO SHUT VALVE.
G ATMOSPHERIC VENT VALVE #2 FAILED TO CLOSE AUTOMATICALLY DUE TO FAILURE OF 1/P CONVERTER. VALVE FAILED AT 10% - 14%
OPEN POSITION WITH 0% DEMAND. VALVE WAS OPERATED MANUALLY.
DAVIS-BESSE 98-06 e WHEN RETURNING TO OFFSITE POWER, CIRCUlT BREAKER ABDC1 FAILED TO CLOSE WHEN PARALLELING EDG #1 TO OFFSITE POWER. CAUSE WAS INADEQUATE MECHANICAL CLEARANCE BETWEEN THE TRIPPING TRIGGER CAM AND TRIP PLUNGER PIN.
O WHEN RETURNING TO OFFSITE POWER FROM EDG #2, RECEIVED EDG BREAKER TRIP ON REVERSE POWER. POSTULATED THAT FAILURE OF R3 RELAY CAUSED FAILURE OF BYPASS FOR REVERSE POWER TRIP FUNCTION ON LOOP.
CORRECTIVE ACTIONS O BAYSHORE TOWERS BEING REPAIRED
(~2 WEEKS).
l l
DAVIS-BESSE 98-06 G TEMPORARY ROOF INSTALLED ON TURBINE BUILDING.
O EDG #1 SWITCH CONTACT BLOCK REPLACED.
O DAMPER HYDROMOTORS REPAIRED. ROOT CAUSE EVALUATION TO BE PERFORMED.
G 1/P CONVERTER REPLACED FOR ATMOSPHERIC VENT VALVE #2. ROOT CAUSE EVALUATION TO BE PERFORMED.
O BREAKER ABDC1 REPLACED WITH SPARE. ROOT CAUSE TO BE DETERMINED.
.O R3 RELAY HAS BEEN REPLACED AND SUCCESSFULLY TESTED.
I PLANT REMAINED IN HOT STANDBY IN ANTICIPATION OF RETURNING TO POWER.
AGENCY RESPONSE O REGION: INCIDENT RESPONSE CENTER ACTIVATED HOUR MONITORING.
(
DAVIS-BESSE 98-06 9 13-MEMBER SPECIAL INSPECTION TEAM DISPATCHED.
DETERMINED LICENSEE RESPONSE AND CORRECTIVE ACTIONS WERE SATISFACTORY.
FINDINGS WILL BE DOCUMENTED IN INSPECTION REPORT 50-349/98012.
G RESTART PANEL FORMED ALL RESTART ISSUES RESOLVED ON JUNE 29, 1998.
MC 0350 PROCESS USED TO DETERMINE RESTART CAPABILITY.
i O HQ: 6/24/98 l
2201 - ENTERED STANDBY RESPONSE MODE.
ACTIVATED HQ OPERATIONS CENTER (OC) DUE TO UNCERTAINTIES CONCERNING THE EVENT.
- 4 DAVIS-BESSE 98-06 6/25/98 0211 - DOWNGRADED RESPONSE FROM i STANDBY TO MONITORING PHASE OF l NORMAL RESPONSE MODE.
6/26/98 1330 - TERMINATED MONITORING PHASE AND RETURNED TO FULL NORMAL OPERATIONS.
I
Davis-Besse FROM TO TO 8"iefi"9 98'#>
.- UNIT NO. I START-UP START - UP
( MAIN TRANSF.
NO. I TRANSF.
NO.Ol TRANSF.
NO.02
\
l l 'J'(EAST) BUS j
I 34560 [34563 1 1 I T I
l ._,j34561 34564
- 1 l 34562 l \
l " K'( WEST ) BUS !
TO BAYSHORE TO LEMOYNE TO OHIO j SUBSTATlON SUBSTATION EDISON CO.
i DAVIS 8 ESSE NUCLEAR POWER STATlDN I- 345 KV SilTCHYARD ONE LINE DIAGRAN FIGURE 8.2-2 REVISION O JULY 1982 l
L _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .
