|
|---|
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
December 17, 1985 b Docket No. 50-346 LICENSEE: Toledo Edison Company FACILITY: Davis-Besse Nuclear Power Station, Unit No.1
SUBJECT:
SUMMARY
OF MEETING - NOVEMBER 26, 1985 ON SFAS MODIFICATIONS On November 26, 1985, a meeting between Toledo Edison Company and the NPC was held to discuss proposed changes to the Safety Features Actuation System (SFAS) at Davis Besse. The modifications are to resolve an ongoing concern regarding certain shared power returns which bring into question the adequacy of redundant channel independence and compliance with IEEE 279. The issue arose as a result of an event at the station on December 5,1980. As a result of system reviews being conducted as follows-up to the June 9,1985 event, Toledo Edison Company determined that this issue should be resolved prior to the unit being returned to power.
Enclosure 1 is the discussion material presented by Toledo Edison Company.
Enclosure 2 is a list of attendees.
Toledo Edison plans to make a formal submittal of the proposed modification by the first week of December.
Information which must be submitted for review includes:
Marked up electrical schematic / elementary diagrams of the SFAS changes.
Description of the changes.
Testing procedures that will be used to demonstrate electrical independence between redundant SFAS instrument channels following the modifications.
Discuss the periodic surveillance (monitoring) to be performed on the floating returns following the modifications.
Ortr!ml emad by Albert De Agazio, Project Manager PWR Project Directorate #6 Division of PWR Licensing-B
Enclosures:
As stated cc w/ enclosures:
See next page PBD-6 ,
8512270290 851217
/De Agaz~ DR ADOCK 05000346 p
PDR 12f/ /8
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( y4 e 7
- a
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TOED 0 EDISW CGPMY DAVIS-BESSE NUCLEAR POER STATIM .
> LNIT 1
. . l SEETY EATUES ACTUATIm SYSTEM i 014NEL INDEPENDENE r
9
+ **
MEETING AGENDA: Safety Features Actuation System Channel Independence
, )
PLACE: B&W offices, Suite 220 7910 Woodnont Avenue Bethesda, Maryland TIME: November 26, 1985 9:00 am .
PURPOSE: Proposed Upgrade to SFAS (SLIDE 1) I. Description of Davis-Besse SFAS la (See Attached)
(SLIDE 2) II. Description of December 5, 1980 Event (Narrative Attached)
III. Options Available (SLIDE 3) 1. Monitor for Ground Faults' (SLIDE 4) 2. Tie Floating Common to Ground (SLIDE 5) 3. Physically Separate Commons Between Sa ,b Channels
- 4. Separate Sensor Channel Commons (SLIDE6a,6) b IV. Implementation Schedule A. Package Preparstion By 11/30/85 B. Installed Post-Modification Tests Complete By 12/15/85 C. Following Implementation, SFAS Monthly and 18-Month Tests Will Be Run V. Questions and Answers
- 71. NRC Staff Feedback I
e 5
5
(
- e. , + - ,F - - ..
4
3
. +
l 4
i SFAS - AS CURRENTLY WlRED CHI CH2 X. ,
CHANNELi g CHANNEL 2 -
e SENSOR e SENSOR W LOGIC 3 LOGIC TO LOGC* TO LOGIC -
CH I,2,3,4 CH 1,2,3,4 -
~
AND AS AND SFAS DEVIT DEVICE CH3 CH4 XMTR XMTR
- SENSOR SENSOR TO LOGlC+ myg W mc TO LOGIC-+--CHANNEL E '
CH l .2,3,4 CH l.2,3,4 CHANNEL 3 CHANNEL 4 5 SENSOR CHANNELOPTICALLY ISOLATED FROM LOGIC CHANNEL Slide 1
- -+.:,- -- - , - - m y - W
. . SFAS AS CURRENTLY WWED l
i UI XMTR Is0 @ siSTA:x.s N PS A
Og Og 0
_ SENSOR 1 1 g___ _ _______
i TO OTW H8VAC -
' icd $n.
Yi(Ya) . ' mCu oTe
',.ACTUATON CHANNELS .
]P i i P l g i OUTPUT
@ LOGIC SUPPLIES I l l l COMMON CUTPUT 1 TO N TED g
RELAY T DEVICE' .
SMS CHANNEL i(2) LEBE!D
. C= COMMON A= Il8MAC FEID COMMON (C) +5s + SVDC POWER 15VDC POWER 24=24VDC F0WER h RIs LA I
^
U1 ~
ISO XMTR BISTABLE ,
@t @
s.stse____ __"rt t t % _d _ _ m ACTUATION l ig, ll8VAC '
l ,
i .,CMme n s .
i Y3(Y4) ,RDM g I
1 r , , 1 r y LCNMcES I l l OUTPUT LDGIC POWER SuPPuES h
~
4 l iI l COMMON f OUTPUT L TO ACTUATED p RELAY T DEVICE g
SFAS CHANNEL S(4) Ly Slide la
NARRATIVE OF DECEMBER 5, 1980 EVENT
- 1. Plant was in shutdown condition, following a December 3,1980 reactor trip due to DC ground fault (outside SFAS). ,
l
- 2. Shortly.after December 3 trip, a ground fault was identified in SFAS.
This fault caused SFAS SAM, lights which are normally off to flicker on. '
- 3. In the course of troubleshooting, SFAS Channel 3 was de-energized.
This channel was chosen randomly, as fault was either in Channel 1 or Channel 3. j
- 4. ' Channel 3 was re-energized . Channel 3 bistables were still in a ,
tripped state, which is normal following loss of power. I
- 5. One Channel 3 output module had a light out. When bulb was removed, )
an inadvertent tie between cabinet (station ground) and power supply common occurred (this is functionally shown as 2).
l
- 6. This inadvertent tie caused 3 amp AC supply fuse to power supply PS 1 107 to blow. This was due to tha failure of PS 107 (functionally '
shown as 1) in which a fault in supply caused 118 VAC on power supply secondary (DC) side.
~
- 7. Loss of PS 107 caused Channel I bistab'les to trip. Since Channel 3 bistables were already tripped, a 2-out-of-4 condition resulted, causing a full SFAS actuation.
l l
e l
l 1
DECEMBER 5, 1980 EVENT Il8VAC (Yl) r-------------- l
. I"d "2 "h d "d "d N I I
.! ' rid l l PSIO5 PSIO6 IlPSIO7 lPSIO9l l I
. ji l l .. ,3= .isu ,i - - . =
l i
6P j I
l PSilO PSIll PS!!2 l
l 1
+24VDe + 24VDC .24VDC l l '
1 . ,l ;
I si
. L _ _ _ _$r^S = a" ' '
_ _ _ _g _ _I p, T CAUSING ll8VAC ON T COMMON (Fl.OATING') CASINET POWER WPPLY
- TlED TO STATION SECONOUlY GROUND ll8VAC (Y3) r------------- 7 and ud u@ u@ u ud %.@ !
1 I I
I l PS 305 PS 306 PS 307 PS 32 l 1 1
- + voc m voc + voc -evoc I i
l l 1
I l
PS 310 PS 311 PS312 l 1 I .
I +uvoc + u= +ua I
< ^ l l ' T 2 l l I
! t _ _ _SLASEANNE 3_ ,
[ _jhINADVERTENT T TIE TO STATION CABINET GROUND TIED TO STATION GROUND Slide 2 i___
L .' .
TTIW: MONITOR FOR GRCUND FALTCTS MANTAGES o DOESNOTCOMPRQ4ISESYSTEMRELIABILITY.
o CURRENTLY BEING DONE ON A MONTHLY BASIS.
DISADVANTAGES
'o RENFR SFAS TO A TWO CH#4NEL SYSTEM.
o DiTECTION OF A. FAULT. AFFECTING TWO SENSOR CHANNELS MJST BE PHYSICALLY CLEARED..
Slide 3 l
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1 G7fl@: IIE Ctr+1oN TO GROLND - - -
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AtNANTAGES l
o ASSURES -THAT SFAS IS .ItttNE TO A SINGLE FAILLRE Mi!CH COULD AFFECT TWO SENSOR CHMNELS.
o CHANGE REGUIRES NO NEW OR C m PLICATED HARDWARE.
o CHANGE IS SIMPLE TO ACCCWLISH. '
R .
o PROVIDESPOSITIVERESULTS. -lFAFAULTOCCURSITIS IffEDIATELY-CLEARED, NO WILL RESULT IN A TRIP OF CHNINEL CMTAINING FAULT.
DISADVANTAGES o CHANGE t%KES SFAS MORE . SUSCEPTIBLE TO SPURIOUS TRIPS.
c-o POTENTIALPERSCNNELSAFETYFROBLEMS.
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TTIm: PkYSICALLY SEPARATE C0ft10NS BETWEEN 0%NNELS MANTAGES o ASSURES THAT SFAS -IS 4PtplE-TO A SINGLE FAILWE WICH 00UQ AFFECT TWO SENSOR CHAPNELS.
o DOES.NOT.MAKE SFAS.MORE SUSCEPTIBLE:TO SPURIOUS TRIPS OR EGLIIPtENT DHAGE.
DISADVANTAGES
= ExrENSIVEFIELDWIRINGANDHARDWAREREQUIRED.
o QJRRENT SYSTEM SPACE LIMITATIONS WOULD NOT ALLOW COR '
AIE!TIONAL TERMINATIONS REQUIRED.
o SYSTEMRELIABILITYREDUCTION.
Slida 5 i
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Rf/SICALLY SEPARATED C01DE ETWEEN OWlES i .=
5"AS SFA,5 '
CW l(Z) BUS CH 3(4) sus
+24 VDC + 24 VDC '
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OVDC .
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< WIRES ( CONTACTS - .
. TO SE.ADDED
(, REFLECTS REVISION REQUIRED TO DWG.E-30B,SH.4)
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PHYSI.CALLY SEPARATED C@lTNS BEBEEN OWiELS 5FA5 SFAS.
CH.I(2) SUS Ch.3 (4) SUS 12.4VOC . 424VDC T_ T LA 16 L A B U'S ; d : LE BU5 ; $ ;
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- [ REFLECTS REvtsloN REQUIRED To DWG.E-G08,5H.14D (ELEM.oNLY)]
i Slida 5b '
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l G7[l@: DARATIONf0F SENSOR OMNNEL [kPf10NS (IED PREFERRED OFTION) b/ANTAGES o
ASSURES THAT SFAS IS.I>ttNE TO A. SINGLE FAILURE Wi!CH COULD AFFECT TWO SENSOR CHANNELS.
o DOES NOT PMKE SFAS MORE SUSCEPTIBLE TO SPLRIOUS TRIPS OR ECUIPPENT IW%GE. ,
o REQUIRES'NC FIELD WIRING O WiGES.
DisAwANrAses - -
o REGUIRES VERY.#BITIQUS SCHEDULE TO ALLOW INSTALLATION PRIOR TO PUWT RESTART.
Slide 6 e
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l SFAS- AS PROPOSED CH: CH2 XMTR CHANNELI XMTR CH NNEL 2
~
. SENSOR SENSOR O' 1.O GIC TO LOGIC +- CHAN E TO LOGIC
- CHANNEL CH 1,2,3,4 CH I,2,3,4 ANO CE CH3 CH4 XMTR XMTR
-X R LOGC TO LOGIC- TO LOGIC +-
CH 1,2,3,4 CH 1,2,3,4 3 4
- SENSOR POWER SUPPLY ISOLATED FROM LOGIC POWER SUPPLY
~ ' SENSOR CHANNEL OPTICALLY ISOLATED FROM LOGIC CHANNEL Slide 6a 8
.-?__..___. - . . . ~ . - . . - - - . - - - - - - . - , - ~ , - - .
SFAS MOOlFICATION-SEPERATION OF SENSOR COMMON 1
SENSCR gjg, -
PCMR ggg suPPUEs BISTABLE PS i
-t5 R 0 0 Q.
_SE_N __
g 7 7 Q[ _ _
ACTUATION m i.,
ll8 M C $l $$$
Yl(Y2) Sanom oneen
. u o o, ,.$EEs l - 24 OUTPUT LOGIC
, POWER -
SUPPLIES 1
([
l l l l COMMON OUTPUT 1- TO A N TED a
_ RELAY T ' OEVICE
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SFAS CHANfEL i(2) LEGD O I 5FROM SENSOR CS= SENSOR COMMON POWER SUPPLY (CHISCH3 ISOLATEDFROM COMMON (CL) CH l CL AND FROM EACH OTMF CL = LOGIC COMMON OI
- OPTICAL ISOLATION a RI= RELAY ISOLATION SENSOR I/I POMR -
- Mr XMTR suPPUEa iso 81 STABLE ps
.7 0 0 0 0 A
. SENSOR I I I I I ~~~
ACTUATION [
F LPe="?4.
7 8"*" a s i il8 H C
, Y3 (Y4) ~
L7,pg"g y o y 9 .
OUTPUT LOGIC SNikS 4 CUTPUT .L. TO ACTUATED i i l l COMMON '
RELAY T. DEVICE 1l i
! SFAS CHANNEL 3(4) t FROM SENSOR POWER f SUPPLY CH 3 i
[
Slida 6b
. Enclosure 2
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November 26,1985 TOLEDO EDISON /NRC MEETING SFAS 6
ATTENDEES NAME ORGANIZATION ALBERT W. DEAGAZIO NRC SUSHIL C. JAIN TED
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CONRAD MCCRACKEN NRC/PDB 6 JACK R. GRIGG BETA DALE R. WUOKKO TED/NLD GEORGE GARRITY CONSOLIDATED CONTROLS CORP.
CHRIS K HN TED/I&C ENGR.
GEORGE DICK NRR/PD 6 4
RICK KENDALL NRR/PEICSB OLAN PARR , NRR/PEICSB LARRY STALTER TED
!- BOB PETERS . TED/NLD l
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. - , - . - . _ , ,, , - . - - . ~ -- . - . . - - . - - -- - - -- --- - - - - - - - --
. 0 MEETING
SUMMARY
DISTRIBUTION Licensee: Toledo Edison Company
- Copies also sent to those people on service (cc) list for subject plant (s).
Docket File NRC PDR L PDR PBD-6 Rdg JPartlow (Emergency Preparedness only)
JStolz ADe Agazio OELD EJordan BGrimes ACRS-1.0 _
NRC Participants I CMcCracken .
GDick j RKendall ,
) OParr' ,
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9
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