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Category:MEETING MINUTES & NOTES--CORRESPONDENCE
MONTHYEARML20217K8511999-10-21021 October 1999 Summary of 990914 Meeting with Cp&L,National Marine Fisheries Service & North Carolina Wildlife Resources Commission at Brunswick Plant Re Biological Opinion Issued by NMFS & Need to Reinitiate Consultation with NMFS ML20196D9751998-11-30030 November 1998 Summary of 981117 Meeting with Util in Rockville,Md Re Proposed Changes to TSs to Provide Longer Allowed Outage Times for Emergency & Balance of Plant Electrical Buses for Plant ML20198L2631998-01-0505 January 1998 Summary of 971202 Meeting W/Util in Rockville,Md Re Changes Proposed by Licensee to TS for BSEP 1 & 2 Allowing Installation of Improvements to CREVS W/Both Plant Units Operating.List of Attendees & Slides Encl ML20217C3021997-09-16016 September 1997 Summary of 970811 Meeting W/Util in Southport,Nc to Discuss Implementation of Endangered Species Act.List of Attendees Encl ML20217H8221997-08-0808 August 1997 Summary of 970801 Meeting W/Util in Rockville,Md to Discuss Scheduling of NRC Reviews of Licensing Actions for Facility. List of Attendees & Activities Planned for Future Encl ML20137F2351997-03-24024 March 1997 Summary of 970207 Meeting W/Listed Attendees in Rockville,Md to Discuss Nuclear Energy Inst Concerns Re Graded Quality Assurance Activities W/Volunteer Plants ML20138G7291996-12-0303 December 1996 Summary of 961203 Meeting W/Psc in Plattville Co Re Decommissioning & License Termination of Fsv.Slides,Encl ML20140H5981996-11-11011 November 1996 Summary of 435th Meeting of ACRS on 961009-12 Re Capability of NRC SCDAP/RELAP5 Code to Predict Temps & Flows in SGs Under severe-accident Conditions ML20133E4371996-11-0505 November 1996 Trip Rept of 961016-17 Visit to Southport,Nc to Observe Testing Downcomer Strainer by Brunswick on 961017 ML20148B5761996-10-0404 October 1996 Summary of 434th Meeting of ACRS on 960912-13 Re Capability of SCAP/RELAP5 Code to Predict SG Temps During Severe Accidents ML20137H2471995-04-12012 April 1995 Summary of 950405-06 Meeting W/Utility at Fort St Vrain Re Stier,Anderson & Malone Rept.Attendees Listed ML20058N7741993-12-0303 December 1993 Summary of Operating Reactors Events Meeting 93-45 on 931201 ML20059A5881993-10-19019 October 1993 Summary of 930923 Meeting W/Util in Rockville,Md Re Status of Activities Associated W/Crack Indications Observed in Unit 1 Core Shroud.List of Attendees & Slides Presented Encl ML20057E6271993-09-13013 September 1993 Summary of Operating Reactors Events Meeting 93-34 on 930908 ML20057B6321993-09-0909 September 1993 Summary of 930826 Meeting W/Util in Rockville,Md Re Status of Activities Involving Unit 1 Outage Status,Cracks in Core Shrouds & Spray Sparger & Metal Turnings Found in Fuel Assemblies.List of Meeting Attendees & Slides Encl ML20057A5221993-07-28028 July 1993 Summary of Operating Reactors Events Meeting 93-27 on 930721 ML20056E2031993-06-15015 June 1993 Summary of Operating Reactors Events Meeting 93-20 on 930602 ML20128P8491993-02-18018 February 1993 Summary of Operating Reactors Events Briefing 93-05 on 930210 ML20128G1851993-01-29029 January 1993 Summary of 930128 Meeting W/Psc in Rockville,Md Re Briefing of NRC Staff on Status of Fsv Decommissioning Activities. Meeting Agenda & Summary of PSCs Briefing Encl ML20127C3361993-01-11011 January 1993 Summary of 921217 Meeting W/Util Re Possible Concerns W/ Control Bldg Emergency Air Filtration Sys Chlorine Detection Logic.List of Attendees & Viewgraphs Encl ML20127K9071992-08-10010 August 1992 Agenda for 920810 Meeting W/Util to Discuss Status of Nuclear Engineering Dept short-term actions,pre-startup/ post-startup Work Item & Classification & post-startup Backlog Disposition ML20217C5121991-07-0303 July 1991 Summary of Operating Reactors Events Meeting 91-12 on 910626 ML20058B7431990-10-19019 October 1990 Summary of 901010 Meeting W/Util & Consultants in Rockville, MD Re Licensee Plan to Pursue Reload Technology.List of Attendees Also Encl ML20059B7331990-08-23023 August 1990 Summary of Operating Reactors Events Meeting 90-21 on 900822.Reactor Scram Statistics Encl ML20055J3931990-07-31031 July 1990 Summary of 900725 Meeting W/Util in Rockville,Md Re Defueling & Decommissioning of Facility.Attendees List Encl ML20127J2961990-04-0606 April 1990 Trip Rept of Commissioner Curtiss 900201 Site Visit.Facility Has Undergone Radical Change in Mgt Personnel & Experiencing Problems W/High Attrition of Licensed Operators ML20247R0161989-09-21021 September 1989 Summary of Operating Reactors Events Meeting 89-34 on 890920 to Brief Senior Managers & Regional Offices on Selected Events That Occured Since Last Meeting ML20248A6891989-09-13013 September 1989 Summary of 890818 Meeting W/Cp&L in Rockville,Md Re Unit 890617 Loss of Offsite Power Event.List of Attendees,Agenda & Presentation Encl ML20247E3641989-09-0606 September 1989 Summary of 890717 Meeting W/Numarc,B&W Owners Group & Representatives of Lead Plants Re Status of STS Amends & Outstanding Issues Associated W/Lead Plant STS Submittals ML20247D5291989-09-0505 September 1989 Summary of Operating Reactors Events Meeting 89-31 on 890830.Significant Event for Input Into NRC Performance Indicator Program Identified ML20246M8581989-09-0101 September 1989 Trip Rept of 890823-890825 Visit to Plants Re Active Licensing Actions Currently Under Review,Feedback from 890822 Meeting,Pending Type a Ilrt,Potential Amend to Double Allowable Containment Leak Rate & Hydrogen Injection Sys ML20246P1361989-08-31031 August 1989 Summary of 890822 Meeting W/Util in Rockville,Md Re Tech Spec Change Mgt Program for Plant.List of Attendees & Viewgraphs Encl ML20246K2171989-08-24024 August 1989 Summary of Operating Reactors Events Meeting 89-30 on 890823 Re Reactor Trip W/Multiple Instrumentation & Equipment Failures at DC Cook Unit 2 on 890814 & Auxiliary Feedwater Flows at Hb Robinson ML20247K2471989-08-24024 August 1989 Trip Rept of Staff 890718-19,21 & 0801-02 Visits to Nuclear Power Plants to Gather Info Re Industry Actions to Address Loss of Oil Malfunctions of Rosemount Models 1153 & 1154 Transmitters ML20246D9231989-08-18018 August 1989 Summary of 890718 Meeting W/Util to Discuss Defueling of Plant.List of Attendees,Agenda & Viewgraphs Encl ML20248B5171989-08-0303 August 1989 Summary of 890725 Interface Meeting W/Util in Birrmingham,Al Re Sonopco/Util Corporate Organization Including Generic Activities & Initiatives Re Plants.Agenda & Viewgraphs Encl ML20245G5421989-08-0303 August 1989 Summary of Operating Reactors Events Meeting 89-28 on 890802.List of Attendees,Events Discussed & Significant Elements of Events & Summaries of Reactor Scrams for Wks Ending 890723 & 30 Encl ML20246P7771989-07-13013 July 1989 Summary of Operating Reactors Events Meeting 89-26 on 890712.Events Discussed & Significant Elements of Events Presented in Encl 2.List of Attendees Also Encl ML20247H5611989-07-12012 July 1989 Summary of 890613 Meeting W/Util & Ncempa in Rockville,Md Re Future Plans for Plant Recirculation Sys Piping Replacement &/Or Repair.List of Attendees & Meeting Agenda Encl ML20246F8691989-06-22022 June 1989 Summary of Operating Reactors Events Meeting 89-24 on 890621.On 890615,potential Unmonitored Primary Coolant Release Path to Environ Discovered at WPPSS-2.On 890617,loss of Offsite Power Occurred at Brunswick,Unit 2 ML20245G6411989-06-15015 June 1989 Summary of Operating Reactors Events Meeting 89-23 on 890614.On 890607,multiple Electrical Distribution Sys Problems Occurred at Oconee,Units 1,2 & 3.On 890610,unit Power Signal Caused Scram ML20245F2221989-06-0808 June 1989 Summary of Operating Reactors Events Meeting 89-21 on 890531.List of Attendees & Related Info Encl ML20245A3851989-05-30030 May 1989 Summary of Operating Reactors Events Meeting 89-20 on 890524.List of Meeting Attendees & Viewgraphs Encl ML20247M7961989-05-24024 May 1989 Summary of 890502 Meeting W/Util,Sargent & Lundy & Rl Cloud Assoc in Rockville,Md Re Nonlinear Piping Analyses Used to Justify Removal of Snubbers & Pipe Supports.List of Attendees & Presentation by Licensee & Contractors Encl ML20247K0901989-05-23023 May 1989 Summary of 890517 Meeting W/Inpo Re Similarities & Differences Between Performance Indicator Programs.Detailed Discussion Encl ML20247J6991989-05-19019 May 1989 Summary of 890501 Meeting w/C-E Owners Group in Rockville,Md Re Diverse Emergency Feedwater Actuation Sys,Per 10CFR50.62 Requirements.List of Meeting Attendees & Viewgraphs Encl ML20247J7051989-05-19019 May 1989 Summary of 890501 Meeting w/C-E Owners Group in Rockville,Md Re Diverse Emergency Feedwater Actuation Sys,Per 10CFR50.62 Requirements.List of Meeting Attendees & Viewgraphs Encl. Record Copy ML20247K1011989-05-16016 May 1989 Summary of 890517 Meeting W/Inpo in Bethesda,Md Re Similarities & Differences Between INPO & NRC Performance Indicators ML20247D3441989-05-16016 May 1989 Summary of Operating Reactors Events Meeting 89-19 on 890510.List of Attendees,Events Discussed & Significant Elements of Events & Rept of long-term Followup Assignments & Summary of Scrams for Wk Ending 890507 Encl ML20246L7281989-05-0505 May 1989 Summary of 890503 Meeting W/Util in Rockville,Md Re Containment Vessel Structural Integrity Tech Specs for Plants.List of Attendees & Licensee Presentation Encl 1999-10-21
[Table view] Category:MEETING SUMMARIES-INTERNAL (NON-TRANSCRIPT)
MONTHYEARML20217K8511999-10-21021 October 1999 Summary of 990914 Meeting with Cp&L,National Marine Fisheries Service & North Carolina Wildlife Resources Commission at Brunswick Plant Re Biological Opinion Issued by NMFS & Need to Reinitiate Consultation with NMFS ML20196D9751998-11-30030 November 1998 Summary of 981117 Meeting with Util in Rockville,Md Re Proposed Changes to TSs to Provide Longer Allowed Outage Times for Emergency & Balance of Plant Electrical Buses for Plant ML20198L2631998-01-0505 January 1998 Summary of 971202 Meeting W/Util in Rockville,Md Re Changes Proposed by Licensee to TS for BSEP 1 & 2 Allowing Installation of Improvements to CREVS W/Both Plant Units Operating.List of Attendees & Slides Encl ML20217C3021997-09-16016 September 1997 Summary of 970811 Meeting W/Util in Southport,Nc to Discuss Implementation of Endangered Species Act.List of Attendees Encl ML20217H8221997-08-0808 August 1997 Summary of 970801 Meeting W/Util in Rockville,Md to Discuss Scheduling of NRC Reviews of Licensing Actions for Facility. List of Attendees & Activities Planned for Future Encl ML20137F2351997-03-24024 March 1997 Summary of 970207 Meeting W/Listed Attendees in Rockville,Md to Discuss Nuclear Energy Inst Concerns Re Graded Quality Assurance Activities W/Volunteer Plants ML20138G7291996-12-0303 December 1996 Summary of 961203 Meeting W/Psc in Plattville Co Re Decommissioning & License Termination of Fsv.Slides,Encl ML20140H5981996-11-11011 November 1996 Summary of 435th Meeting of ACRS on 961009-12 Re Capability of NRC SCDAP/RELAP5 Code to Predict Temps & Flows in SGs Under severe-accident Conditions ML20148B5761996-10-0404 October 1996 Summary of 434th Meeting of ACRS on 960912-13 Re Capability of SCAP/RELAP5 Code to Predict SG Temps During Severe Accidents ML20137H2471995-04-12012 April 1995 Summary of 950405-06 Meeting W/Utility at Fort St Vrain Re Stier,Anderson & Malone Rept.Attendees Listed ML20058N7741993-12-0303 December 1993 Summary of Operating Reactors Events Meeting 93-45 on 931201 ML20059A5881993-10-19019 October 1993 Summary of 930923 Meeting W/Util in Rockville,Md Re Status of Activities Associated W/Crack Indications Observed in Unit 1 Core Shroud.List of Attendees & Slides Presented Encl ML20057E6271993-09-13013 September 1993 Summary of Operating Reactors Events Meeting 93-34 on 930908 ML20057B6321993-09-0909 September 1993 Summary of 930826 Meeting W/Util in Rockville,Md Re Status of Activities Involving Unit 1 Outage Status,Cracks in Core Shrouds & Spray Sparger & Metal Turnings Found in Fuel Assemblies.List of Meeting Attendees & Slides Encl ML20057A5221993-07-28028 July 1993 Summary of Operating Reactors Events Meeting 93-27 on 930721 ML20056E2031993-06-15015 June 1993 Summary of Operating Reactors Events Meeting 93-20 on 930602 ML20128P8491993-02-18018 February 1993 Summary of Operating Reactors Events Briefing 93-05 on 930210 ML20128G1851993-01-29029 January 1993 Summary of 930128 Meeting W/Psc in Rockville,Md Re Briefing of NRC Staff on Status of Fsv Decommissioning Activities. Meeting Agenda & Summary of PSCs Briefing Encl ML20127C3361993-01-11011 January 1993 Summary of 921217 Meeting W/Util Re Possible Concerns W/ Control Bldg Emergency Air Filtration Sys Chlorine Detection Logic.List of Attendees & Viewgraphs Encl ML20217C5121991-07-0303 July 1991 Summary of Operating Reactors Events Meeting 91-12 on 910626 ML20058B7431990-10-19019 October 1990 Summary of 901010 Meeting W/Util & Consultants in Rockville, MD Re Licensee Plan to Pursue Reload Technology.List of Attendees Also Encl ML20059B7331990-08-23023 August 1990 Summary of Operating Reactors Events Meeting 90-21 on 900822.Reactor Scram Statistics Encl ML20055J3931990-07-31031 July 1990 Summary of 900725 Meeting W/Util in Rockville,Md Re Defueling & Decommissioning of Facility.Attendees List Encl ML20247R0161989-09-21021 September 1989 Summary of Operating Reactors Events Meeting 89-34 on 890920 to Brief Senior Managers & Regional Offices on Selected Events That Occured Since Last Meeting ML20248A6891989-09-13013 September 1989 Summary of 890818 Meeting W/Cp&L in Rockville,Md Re Unit 890617 Loss of Offsite Power Event.List of Attendees,Agenda & Presentation Encl ML20247E3641989-09-0606 September 1989 Summary of 890717 Meeting W/Numarc,B&W Owners Group & Representatives of Lead Plants Re Status of STS Amends & Outstanding Issues Associated W/Lead Plant STS Submittals ML20247D5291989-09-0505 September 1989 Summary of Operating Reactors Events Meeting 89-31 on 890830.Significant Event for Input Into NRC Performance Indicator Program Identified ML20246P1361989-08-31031 August 1989 Summary of 890822 Meeting W/Util in Rockville,Md Re Tech Spec Change Mgt Program for Plant.List of Attendees & Viewgraphs Encl ML20246K2171989-08-24024 August 1989 Summary of Operating Reactors Events Meeting 89-30 on 890823 Re Reactor Trip W/Multiple Instrumentation & Equipment Failures at DC Cook Unit 2 on 890814 & Auxiliary Feedwater Flows at Hb Robinson ML20246D9231989-08-18018 August 1989 Summary of 890718 Meeting W/Util to Discuss Defueling of Plant.List of Attendees,Agenda & Viewgraphs Encl ML20248B5171989-08-0303 August 1989 Summary of 890725 Interface Meeting W/Util in Birrmingham,Al Re Sonopco/Util Corporate Organization Including Generic Activities & Initiatives Re Plants.Agenda & Viewgraphs Encl ML20245G5421989-08-0303 August 1989 Summary of Operating Reactors Events Meeting 89-28 on 890802.List of Attendees,Events Discussed & Significant Elements of Events & Summaries of Reactor Scrams for Wks Ending 890723 & 30 Encl ML20246P7771989-07-13013 July 1989 Summary of Operating Reactors Events Meeting 89-26 on 890712.Events Discussed & Significant Elements of Events Presented in Encl 2.List of Attendees Also Encl ML20247H5611989-07-12012 July 1989 Summary of 890613 Meeting W/Util & Ncempa in Rockville,Md Re Future Plans for Plant Recirculation Sys Piping Replacement &/Or Repair.List of Attendees & Meeting Agenda Encl ML20246F8691989-06-22022 June 1989 Summary of Operating Reactors Events Meeting 89-24 on 890621.On 890615,potential Unmonitored Primary Coolant Release Path to Environ Discovered at WPPSS-2.On 890617,loss of Offsite Power Occurred at Brunswick,Unit 2 ML20245G6411989-06-15015 June 1989 Summary of Operating Reactors Events Meeting 89-23 on 890614.On 890607,multiple Electrical Distribution Sys Problems Occurred at Oconee,Units 1,2 & 3.On 890610,unit Power Signal Caused Scram ML20245F2221989-06-0808 June 1989 Summary of Operating Reactors Events Meeting 89-21 on 890531.List of Attendees & Related Info Encl ML20245A3851989-05-30030 May 1989 Summary of Operating Reactors Events Meeting 89-20 on 890524.List of Meeting Attendees & Viewgraphs Encl ML20247M7961989-05-24024 May 1989 Summary of 890502 Meeting W/Util,Sargent & Lundy & Rl Cloud Assoc in Rockville,Md Re Nonlinear Piping Analyses Used to Justify Removal of Snubbers & Pipe Supports.List of Attendees & Presentation by Licensee & Contractors Encl ML20247K0901989-05-23023 May 1989 Summary of 890517 Meeting W/Inpo Re Similarities & Differences Between Performance Indicator Programs.Detailed Discussion Encl ML20247J7051989-05-19019 May 1989 Summary of 890501 Meeting w/C-E Owners Group in Rockville,Md Re Diverse Emergency Feedwater Actuation Sys,Per 10CFR50.62 Requirements.List of Meeting Attendees & Viewgraphs Encl. Record Copy ML20247J6991989-05-19019 May 1989 Summary of 890501 Meeting w/C-E Owners Group in Rockville,Md Re Diverse Emergency Feedwater Actuation Sys,Per 10CFR50.62 Requirements.List of Meeting Attendees & Viewgraphs Encl ML20247K1011989-05-16016 May 1989 Summary of 890517 Meeting W/Inpo in Bethesda,Md Re Similarities & Differences Between INPO & NRC Performance Indicators ML20247D3441989-05-16016 May 1989 Summary of Operating Reactors Events Meeting 89-19 on 890510.List of Attendees,Events Discussed & Significant Elements of Events & Rept of long-term Followup Assignments & Summary of Scrams for Wk Ending 890507 Encl ML20246L7281989-05-0505 May 1989 Summary of 890503 Meeting W/Util in Rockville,Md Re Containment Vessel Structural Integrity Tech Specs for Plants.List of Attendees & Licensee Presentation Encl ML20246C3261989-05-0404 May 1989 Summary of Operating Reactors Events Meeting 89-18 on 890503 ML20246B5161989-04-28028 April 1989 Summary of 890419 Operating Reactors Events Meeting 89-16. List of Attendees & Handouts Encl ML20245D3881989-04-21021 April 1989 Summary of 890413 Meeting W/Control Components,Inc in Rockville,Md Re Operation of Atmospheric Dump Valves.Agenda, Slides Used During Meeting for Valve Description & Worst Case Model Assumptions Encl ML20248K3761989-04-10010 April 1989 Summary of Operating Reactors Events Meeting 89-014 on 890405.List of Attendees,Events Discussed & Significant Elements of Events & Summary of Reactor Scrams for Wk Ending 890402 Encl ML20247F1991989-03-24024 March 1989 Summary of Operating Reactors Events Meeting 89-12 on 890322.List of Attendees,Events Discussed & Significant Elements,Summary of Reactor Scrams & Comparison of Weekly Statistics W/Industry Averages for Wk Ending 890319 Encl 1999-10-21
[Table view] |
Text
.
e JUL 18Iges g' %" 2 MEMORANDUM FOR: Charles E. Rossi, Director 3 '-}
l
- Division of Operational Events Assessment ;zb Office of Nuclear Reactor Regulation FROM: Wayne Lanning, Chief Events Assessment Branch Division of Operational Events Assessment Office of Nuclear Reactor Regulation
SUBJECT:
THE OPERATING REACTORS EVENTS MEETING July 12,1988 MEETING 88 28 On July 12, 1988 an Operating Reactors Events meeting (88 28) was held to brief senior managers from hRR, OSP, AE00, and Regional Offices on events which occurred since our last meeting on July 5, 1988. The list of attendees is included as Enclosure 1.
The events discussed and the significant elements of these events are presented in Enclosure 2. Enclosure 3 presents a summary of reactor scrams. One significant event was identified for input to NRC's Performance Indicator Program.
03181nal 31,g g h>w D, b %
Wayne Lanning, Chief Events Assessment Branch Division of Operational Events Assessment Office of Nuclear Reactor Regulation l
Enclosures:
As stated cc w/Encio.:
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0FFICIAL RECORD COPY 8808030255 PDR ORG 88071v i NRRB j
ENCLOSURE 1 l
LIS1 0F ATTENDEES OPERATillG REACTORS EVENTS BRIEFING (68-28) I
. July 12, 1988 hAME ORGANIZAT10h NANE ORGANI2ATION B.A. Boger NRR/ADR1 W. Minners RES/DRPS D.C. Fischer NRR/00EA W. Lanning NRR/00EA R. Scholl, Jr. NRR/00EA W. Hoages NRR/ DEST J. Sniezek HRR:DD C.E. Rossi NRR/DOEA M.L. Reardon NRR/00EA 6.G. Grimes NRR/DRIS C.J. Haughtiey NRR/DRIS 0. Tondi NRR/SELB
- 5. Varga NRR/DRP K. Eccleston NRR/DRP P. Baranowsky likR/00EA K. Heitner NRR/PD4 B.C. Buckley NRR/P02-1 T. Collins NRR/SRXB E.G. Adensam NRR/DRP G. Gears OSP M. Davis NRR/PDS J.E. Rosenthal AE00/R0AB G. Lainas NRR/DRP T. Murley NRR:D F. Miraglia NRR/ADP i
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ENCLOSURE 2 OPERATING REACTORS EVENTS BRIEFING 88-28 EVENTS ASSE.S._SMENT BRANC.H LOCATION: 12-B-11 WHITE FLINT IME.SDAY, JULY 12, 1988, 11:00 A.M.
PALO VERDE i AUXILIARY TRANSFORMER EXPLOS10N BRUNSWlCK UhlTS 1 & 2 HIGH PRESSURE COOLANT INJECTION PROBLEMS FORT ST. VRAlh CORE SUPPORT FLOOR INTERNAL ,
PRESSURE 1
3
88-28 PALO VERDE 1 AUXILLARY TRANSFORMER _. EXPLOSION JULY 6, 1988 PROBLEM FAILURE OF PALO VERDE UNIT 1 AUXILLARY TRANSFORMER AND SUBSECUENT FIRE LEAD TO A REACTOR TRIP AND LOSS OF FORCED CIRCULATION,
.CRLSE GROUND FAULT ON 13,6 KV NONVITAL BUSS.
SAFETY SIGNIFICANCE LOSS OF FORCED CIRCULATION.
DISCUSSION o UNIT AT 100% POWER PRIOR TO EVENT, c AT APPROXIMATELY 12:07 (MST) ON JULY 6, 1988, UNIT AUXILIARY TRANSFORMER (AXFMR) FAILED CATASTROPHICALLY AND CAUGHT FIRE DUE TO GROUND FAULT ON ASSOCIATED NONVITAL BUSS, o AXFMR SUPPLIES TWO 13,8 KV, NONVITAL BUSES WHICH PROVIDE POWER TO VARIOUS HOUSE LOADS, l.E., ALL REACTOR COOLANT PUMPS, lHSTRUMENT AIR SYSTEM, CODLING WATER SYSTEMS, o LETDOWN WAS ISOLATED DUE TO UNAVAILABILITY OF LETDOWN HEAT EXCHANGER ON LOSS OF NORMAL CHILL WATER, c- REACTOR TRIPPED ON LOSS OF FLOW, c AUXILIARY FEEDWATER (AFW) ACTUATION ON LOSS OF MAIN FEEDWATER DUE TO LOW SUCTION PRESSURE, o PLANT STABILIZED IN MODE 3 WITH DECAY HEAT REMOVAL THROUGH NATURAL CIRCULATION.
o UNCONTAINED Oil FROM THE AXFMR ACCUMULATED IN YARD DRAINS AND OTHER AREAS CAUSING SEVERAL FIRES, o ALL FIRES WERE EXTINGUISHED SY 12:32 (MST),
o AT 13:02 (MST) LICENSEE ATTEMPTED TO RE-ENERGlZE THE FAULTED NONVITAL 13.6 KV DUS VIA THE UNIT 2 STARTUP TRANSFORMER, o A SECOND FIRE ERUPTED INVOLVING THE FAULTED BUS, CONTACT: N FIELDS .
REFERENCE:
50,72 # 12727, 12733, PNG-V-88-41 (DATED 07/07/86 AND UPDATED 07/08/88), MORNING REPORT 07/07/88
- ' pat 0 VE.RDE 1 0 THIS SECOND FIRE WAS MANUALLY EXTINGUISHED USING THE DELUGE SYSTEM; HOWEVER, THE BUS WAS DESTROYED, o AS A PRECAUTIONARY hEASURE, BOTH TRAINS OF SAFETY RELATED ELECTRICAL LCADS WERE PLACED ON 1 HEIR RESPECTIVE EMERGENCY DIESEL GENERATORS (EDG) AND SEPARATED FRON THE OFFSITE POWER SOURCE, c COMPONENTS NEEDED TO MAINTAIN THE PLANT IN NATURAL CIRCULATION AND WHICH REQUIRE INSTRUMENT AIR HAVE BACKUP NITROGEN SUPPLIES, o FOLLOWING RESTORATION OF POWER TO UNAFFECTED NONVITAL BUS, LICENSEE UNSUCCESSFULLY ATTEMPTED TO CLOSE REACTOR COOLANT PUMP (RCP) CIRCUlT BREAKER.
o DC CONTROL VOLTAGE TO AGASTAT RELAY (IN RCP CIRCUIT BREAKER CONTROL CIRCUITRY WAS INSUFFICIENT TO DEVELOP REGUIRED CLOSE PERMISSIVE, c DC BATTERY BECAME DISCHARGED TO APPROXIMATELY 46V FROM 120V WHILE SUPPLYlh6 CONTR0L POWER TO VARIOUS SYSTEMS OVER THE 6-8 HOUR PERIOD IN WHICH THE NONVITAL BUSS WAS SEPARATED FROM THE OFFSITE POWER SUPPLY, o BATTERY WAS DISCONNECTED FRON DC BUS bHICH ALLOW CHARGER TO DEVELOP SUFFICIENT VOLTAGE TO MAKE UP RELAY, o AT 12:35 A.M. (PST) ON JULY 7, 1988 THE LICENSEE STARTED ONE RCP AND A CONTROLLED C00LDOWN WAS THEN COMNENCED USING FORCED CIRCULATION, FOLLOWUP o LICENSEE HAS 50-60 DAY PROGRAM TO REPLACE DAMAGED EQUlPMENT AND MAKE ROOT CAUSE ANALYSIS, o LICENSEE TO REVIEW ADEQUACY OF RELAY AND BREAKER C0 ORDINATION AS PART OF ThElR FOLLOWUP EFFORT, '
o LICENSEE CONSIDERING THE INSTALLATION OF ADDITIONAL BATTERY CHARGER TO LE POWERED FROM AN ALTERNATE SOURch. i l
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88-25 B!LUNSW X UMTS 18 2 HlGH PRESSURE COOLANT INJECTION PROBLEMS APRll 1 THROUGH JULY 12, 1988 PROBLEM o RECENT TREND OF LARGE NUhBERS OF REPORTABLE EVENTS, o MANY OF THESE REPORTS INCLUDE SAFETY SYSTEMS, o 50,72s LARGELY DOMINATED BY HIGH PRESSURE COOLANT INJECTION (HPCI)
SYSTEM FAILURES AND IN0PERABillTIES, CAUSE o POSS!BILITY OF INADEQUATE HPCI DESIGN (NOT GE STANDARD),
o PROBLEMS ASSOCIATED WITH AGING, MOV START CIRCUITRY, AND TEST AND MAINTENANCE PROGRAMS, SAFETY SIGNIFICANCE LOW HPCI AVAILAblLITY DUE TO FAILURES AND INOPERABILITIES PUTS THE UNITS AT A HIGHER VULNERABillTY IN THE EVENT OF AN ACCIDENT OR TRANSIENT SITUATION, D_ll_ CUSS 10N o BOTH UNITS IN 14 DAY LCO WITH flPCI CUT OF SERVICE.
c MOST RECENT EVENTS INVOLVE THE INOPERABILITY OF THE DC MOV's E41-F006A (HPCI INJECTION VALVES) ON BOTH UNITS, FAILURE OF STEAh SUPPLY VALVE E41-F001 (UNIT 1) AND NON-CONSERVATIVE SETPOINTS FOR THE STEAM LINE ISOLATION INSTRUMENTS ON ON BOTH UNITS, o SINCE 04/01/88 45% OF ALL BRUNSWILK's HAVE BEEN HPCI RELATED, c ON 06/06/88 HPC1/RCIC INOPERABLE ON BOTH UNITS SIMULTANE0USLY, o SETPOINT PROBLEMS ARE RELATED TO DATA USED IN STARTUP TESTING, ALSO HAD PRESSURE TRANSMITTER PIPING TAPS REVERSED, o REPLACED DARTON PRESSURE TRANSMITTER WITH ROSEMONT PRESSURE TRANSMITTER WITHOUT POST-MAINTENANCE TESTING, o DC VALVE OPERATOR N0 TORS AT SITE HAVE A NORMALLY ENERG12ED SHbNT FIELD - WHEN ISOLATED BY BREAKER, ENERGY DOES NOT HAVE A DISSIPATION PATH WHICH LEADS TO MOTOR DEGRADATION, c MANY VALVE PROBLEMS FOUND, CONTACT: J. RALElGH
REFERENCES:
50,/2 #s 12E97, 12721 AND MORNING REPORT 07/05/88
88-28 BR,0NSWICK 1 8 2 1 VALVE FAILED ON THERMAL BINDING WHERE MORE 10 ROUE THAN DESIGN WAS NECESSARY AFTER BEING REFURBISHED TWICE, REDUCED VOLTAGE DUE TO STARTING RESISTORS STALLING THE LIMITORGUE "HAMMER-BLOWS" WHICH UNSEATS VALVE, o LICENSEE HAS BYPASSED THE START RESISTORS, ENLARGED CABLE RUNS (T0 REDUCE LOSSES) AND INCREASED ACTUATOR GEAR RATIOS TO DEllVER MORE TORQUE TO VALVES - IN POST-MAINTENANCE TESTING PHASE, FOLLOWUP o REGION WILL PURSUE ACTION ON THE J.C.0.
o REGIONAL INSPEC110h TEAM AT Silt, o ENFORCEMENT CONFERENCE 07/20/88 ON HPCI PROBLEMS,
88-28 BRUNSWICK UNIT 1 SHORT TERM OPERATING HISTORY B.ETWEEN 04/01/88 - 07/12/88 HECl RELATED 50,72 REPORTABLE EVENTS:
o 04/20/88 - HPCI DECLARED INOPERABLE BECAUSE OUTBOARD SUPPRESSION P0OL SbCTION VALVE DID NOT OPEN UPON DEMAND, o 05/28/88 - HPCI TURBINE STEAM SUPPLY VALVE FAILED TO OPERATE FOR UNKNOWN REASONS, THUS RENDERING HPCI INOPERABLE, o 06/06/88 - RCIC STEAM LlhE HIGH FLOW ISOLATION SETPOINTS WERE LESS C0ilSERVATIVE THAN THE TECHNICAL SPECIFICATION REQUIREMENTS. RCIC hAS DECLARED INOPERABLE AND WITH HPCI OUT-0F-SERVICE FOR VALVE REPAIRS A REACTOR SHUTDOWN WAS COMMEUCED, o Ub/30/88 - HPCI WAS ISOLATED AN DECLARED INOPERABLE WHEN IT WAS DETERMINED THAT THE SETPOINTS FOR THE 300% STEAM LINE ISOLATION SETPOINTS WERE SET NONCONSERVATIVELY, o 07/01/88 - HPCI TURBINE STEAM SUPPLY VALVE FAILED TO OPEN AND ITS ASSOCIATED BREAKER TRIPPED FOR UNKNOWN REASONS, o 07/05/88 - OPERABILITY OF THE HPCI INJECTION VALVES (DC MOV'S) IS CUESTIONABLE IN A SEVERELY DEGRADED DC VOLTAGE CONDifl0N DUE TO THE TORCUE RELulREMENTS EXCEEDING THE CAPACITY OF THE STARTING MOTOR IN SUCH CONDITIONS, l
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. 88-28 BRUNSWICK UNIT 2 SHORT TERM OPERATING HISTORY BETWEEN 04/01/88 - 07/12/88 HPCI RELATED_50.72 REPORTABLE EVENTS o 04/Z9/88 - HPCI WAS DECLARED INOPERABLE AND ISOLATED IN ORDER TO MAINTAIN CONTAINMENT INTEGRITY DUE TO A PERSONNEL ERROR WHILE INSTALLING INSULATION, 0 05/13/88 - HPCI DECLARED INOPERABLE DECAUSE THE MINIMUM FLOW VALVE STROKE TIME 01D NOT MEET FSAR REQUIREMENTS, c 06/06/88 - RCIC STEAM LINE HIGH FLOW ISOLATION SETPOINTS WERE LESS CONSERVATIVE THAN THE TECHNICAL SPECIFICATION RECLslREMENTS, RCIC WAS DECLARED INOPERABLE AND WITH HPCI OUT-0F-SERVICE FOR VALVE REPAIRS A REACTOR SHUTDOWN WAS COMMENCED, o Ub/L'4/88 - HPCI DECLARED INOPERABLE AFTER DISCOVERING THAT ONE HPCl
$1EAM LINE DIFFERENTIAL PRESSURE TRANSMITTER HAS HAD ITS HIGH AND LOW PRESSURE LINE REVERSED SINCE CONSTRUCTION, o 06/26/88 - HPCl INBOARD STEAM SUPPLY VALVE FAILED TO OPEN BECAUSE THE BREAKER WAS TRIPPING ON THERMAL OVERLOAD; THEREFORE, HPCI WAS DECLARED INOPERABLE, o 06/30/88 - HPCI WAS ISOLATED AND DECLARED INOPERABLE WHEN IT WAS DETERhlNED THAT THE SETPOINTS FOR THE 300% STEAM LINE ISOLATION SETPOINTS WERE SET NONCONSERVATIVELY, THE 2A CORE SPRAY SYSTEM WAS OUT-0F-SERVICE FOR MAINTENANCE BUT WAS RESTORED WITHIN 30 MINUTES, o 07/05/88 - OPERABILITY OF THE HPCI INJECTION VALVES (DC MOV'S) IS QUESTIONALLE IN A SEVERELY DEGRADED DC VOLTAGE CONDITION DUE TO THE TORCUE REGUIREMENTS EXCEEDING THE CAPACITY OF THE STARTING MOTOR IN SUCH COND!i!0NS, l
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. 88-28 l
l EORT ST, VRAIN CORE SUPPORT FLOOR INTER.NAL PRESSUR.E JULY 12, 1988 PROBLEM VALVE IN CORE SUPPORT FLOOR (CSF) VENT SYSTEM hAS FOUND IN MID-POSITION WHICH WOULD HAVE PREVENTED CSF PRESSURE CCl, TROLLER FROM CONTROLLING PRESSURE WITHIN CSF.
CAUSE PROBABLY HUMAN ERROR,
. SAFETY SIGNIElCANCE o DEFORMATION OF CSF STEEL CASING COULD CAUSE SIDEWALL LINER TO SIGNIFICANTLY RESTRICT THE PRIMARY COOLANT FLOW PATH.
o TOP LINER COULD BUCKLE CAUSING POSSIBLE CORE DISARRAY, DISCUSSION o NON-SAFETY VENT SYSTEM MAINTAINS CSF PRESSURE LESS THAN 60 PSIG, o DURING NORMAL OPERATION PRIMARY COOLANT PRESSURE IS 700 PSIG.
O hlTH VENT VALVE CLOSED, CSF PRESSURE COULD COME IN EQUILlBRIUM Wi1H PRIMARY SYSTEM PRESSURE, o FOLLOWING RAP f lEPRESSURIZATION OF PRIMARY COOLANT, A 700 PSID COULL BE EXERic6 ACROSS CSF CASING, l o SAME SYSTEM BRIEFED april 12, 1988 (BRIEFING 88-15).
FOLLOWUP l REGION IV IS FOLLOWING UP, I
1 CONTACT: 1, GREENE
REFERENCE:
50,72 # 12730
UPDATED FSAR Revision 2 e ,,
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SUMMARY
NEEK ENDIN8 07/10/88
!. PLANT SPECIFIC DATA DATE SITE UNIT PONER S!6hAL CAU5i COMPLI- YTD VfD YiB CAT 10NS A80VE BELON TOTAL 151 151 07/05/98 DCONEE 1 100 A PERSONNEL N0 1 0 1 07/06/88 PALO VERDE 1 100 A EBUIPMENT E0 3 1 4 07/10/88 DIABLO CANYON 1 0A UENOWN N0 1 1 2 i
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Page No. 1 07/15/23 FERFORPA%CE lhD!CATOR5 SIGN!FICANT EVENTS PLANT NA"E EVINT EVEhi ItsrRIPi!CN GTR SIGN!FICAN:E
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