PNO-V-86-069, on 861003,DHR Lost for Approx 13 Minutes.Caused by Closure of Isolation Block Valve on DHR Pump Suction Due to Apparent Electrical Transient.Investigation Continuing
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| ML20211A214 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 10/03/1986 |
| From: | Miller R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | |
| References | |
| PNO-V-86-069, PNO-V-86-69, NUDOCS 8610150028 | |
| Download: ML20211A214 (1) | |
Similar Documents at Rancho Seco | |
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Category:PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO
MONTHYEARPNO-V-89-056, on 890911,SMUD Board Rejected Golden State Energy Proposal to Purchase Plant1989-09-12012 September 1989
[Table view]PNO-V-89-056:on 890911,SMUD Board Rejected Golden State Energy Proposal to Purchase Plant PNO-V-89-053, on 890901,Golden State Energy Proposal to Purchase Rancho Seco Submitted to Util,Including MOU for Purchase of Plant,Power Sale Agreement & Interim Operation & Maint of Facility & Rate Structure.Vote Expected on 8909071989-09-0505 September 1989 PNO-V-89-053:on 890901,Golden State Energy Proposal to Purchase Rancho Seco Submitted to Util,Including MOU for Purchase of Plant,Power Sale Agreement & Interim Operation & Maint of Facility & Rate Structure.Vote Expected on 890907 PNO-V-89-050, on 890823,util Announced That Board of Directors Would Meet on 890825 Re Proposed Golden State Energy Purchase of Plant.Key Issues Listed,Including MOU Addressing Power Sale Agreement1989-08-23023 August 1989 PNO-V-89-050:on 890823,util Announced That Board of Directors Would Meet on 890825 Re Proposed Golden State Energy Purchase of Plant.Key Issues Listed,Including MOU Addressing Power Sale Agreement PNO-V-89-044, on 890720,util Board Voted by 4-1 Vote to Enter Exclusive Negotiations W/Quadrex Corp for Possible Sale of Plant.Key Milestone Dates Listed.Board Maintained That Several Key Issues Must Be Addressed Before Voting on Sale1989-07-21021 July 1989 PNO-V-89-044:on 890720,util Board Voted by 4-1 Vote to Enter Exclusive Negotiations W/Quadrex Corp for Possible Sale of Plant.Key Milestone Dates Listed.Board Maintained That Several Key Issues Must Be Addressed Before Voting on Sale PNO-V-89-039, on 890620,util Announced That Licensee Open to Offers to Purchase Facility Until 890630.Of All Bidders,Only Quadrex Corp Proposes to Operate Facility as Nuclear Plant. Evaluation of Bids Expected to Be Completed by End of Jul1989-07-0303 July 1989 PNO-V-89-039:on 890620,util Announced That Licensee Open to Offers to Purchase Facility Until 890630.Of All Bidders,Only Quadrex Corp Proposes to Operate Facility as Nuclear Plant. Evaluation of Bids Expected to Be Completed by End of Jul PNO-V-89-036, on 890620,SMUD Voted 3-2 to Allow 10 Days for Qualified Private Bidders to Submit Proposals to Take Over Facility.Conditions Imposed on Bidders Listed.Existing Quadrex Proposal Withdrawn1989-06-21021 June 1989 PNO-V-89-036:on 890620,SMUD Voted 3-2 to Allow 10 Days for Qualified Private Bidders to Submit Proposals to Take Over Facility.Conditions Imposed on Bidders Listed.Existing Quadrex Proposal Withdrawn PNO-V-89-035, on 890619,licensee Announced That D Keuter Had Been Appointed New Site Manager & Jr Shetler as Deputy Site Manager.Licensee Recognizes That Organizational Changes Subj to NRC Approval1989-06-20020 June 1989 PNO-V-89-035:on 890619,licensee Announced That D Keuter Had Been Appointed New Site Manager & Jr Shetler as Deputy Site Manager.Licensee Recognizes That Organizational Changes Subj to NRC Approval PNO-V-89-034, on 890615,offer to Assume Financial & Technical Responsibility for Plant Announced.Plant Presently in Cold Shutdown W/Activities Continuing Towards off-loading Reactor Core in Oct 19891989-06-16016 June 1989 PNO-V-89-034:on 890615,offer to Assume Financial & Technical Responsibility for Plant Announced.Plant Presently in Cold Shutdown W/Activities Continuing Towards off-loading Reactor Core in Oct 1989 PNO-V-89-033C, on 890609,plant Reached Cold Shutdown in Preparation for Reinstalling Refueling Bridge Into Reactor Bldg.Bridge Removed for Refurbishment/Mod.Reduction in Force of Nonessential Contractor Personnel in Progress1989-06-12012 June 1989 PNO-V-89-033C:on 890609,plant Reached Cold Shutdown in Preparation for Reinstalling Refueling Bridge Into Reactor Bldg.Bridge Removed for Refurbishment/Mod.Reduction in Force of Nonessential Contractor Personnel in Progress PNO-V-89-033B, on 890608,licensee Continuing Cooldown of Plant.Ceo Nuclear,J Firlit,Announced Resignation.Work Force Reductions Initiated Which Will Initially Involve Approx 420 Nonessential Contractor Clerical & Crafts Personnel1989-06-0808 June 1989 PNO-V-89-033B:on 890608,licensee Continuing Cooldown of Plant.Ceo Nuclear,J Firlit,Announced Resignation.Work Force Reductions Initiated Which Will Initially Involve Approx 420 Nonessential Contractor Clerical & Crafts Personnel PNO-V-89-033, on 890606,voters Defeated Measure K,Encouraging Util to Cease Operating Facility.Util Board Previously Announced That Plant Would Be Shutdown If Measure K Defeated.Safe Shutdown Plan Implemented1989-06-0707 June 1989 PNO-V-89-033:on 890606,voters Defeated Measure K,Encouraging Util to Cease Operating Facility.Util Board Previously Announced That Plant Would Be Shutdown If Measure K Defeated.Safe Shutdown Plan Implemented PNO-V-89-033A, on 890607,util Shut Down Plant & Entered Hot Shutdown Due to Voter Defeat of Measure K.Util Continuing to Implement Contingency Plan to Remove Plant from Svc. Reductions in Site Work Force Under Consideration1989-06-0707 June 1989 PNO-V-89-033A:on 890607,util Shut Down Plant & Entered Hot Shutdown Due to Voter Defeat of Measure K.Util Continuing to Implement Contingency Plan to Remove Plant from Svc. Reductions in Site Work Force Under Consideration PNO-V-89-030, on 890518,airborne Process Monitors for Reactor Bldg Stack,Auxiliary Bldg Stack & Auxiliary Bldg Grade Level Vent Inoperable.Caused by Computer Controlled Svc Air Purge Valves in Open Position.Possibly Caused by Software Errors1989-05-19019 May 1989 PNO-V-89-030:on 890518,airborne Process Monitors for Reactor Bldg Stack,Auxiliary Bldg Stack & Auxiliary Bldg Grade Level Vent Inoperable.Caused by Computer Controlled Svc Air Purge Valves in Open Position.Possibly Caused by Software Errors ML20196B6881988-11-30030 November 1988 PNS-V-88-006:on 881126,licensee Received Telcon Alleging That Nonlicensed Equipment Operator Observed Using Illegal Drugs.Individual Submitted to Urinalysis Test & Showed Positive for Marijuana.Individual Terminated on 881130 PNO-V-88-059, on 881024,licensee Determined That Reactor Coolant Unidentified Leakage Was 1.06 Gpm.Leakage Could Not Be Reduced.Reactor Was Shut Down.No Entry Inside Shield Permitted.Repair Method to Be Determined Upon Next Entry1988-10-25025 October 1988 PNO-V-88-059:on 881024,licensee Determined That Reactor Coolant Unidentified Leakage Was 1.06 Gpm.Leakage Could Not Be Reduced.Reactor Was Shut Down.No Entry Inside Shield Permitted.Repair Method to Be Determined Upon Next Entry PNO-V-88-058, on 881014,reactor Tripped from Phase Imbalance on 6.9 Kv Power to Four Operating Reactor Coolant Pumps.Grid Disturbance,Which Affected Startup & Auxiliary Transformer Power Sources on One Offsite Power Line,Possible Initiator1988-10-14014 October 1988 PNO-V-88-058:on 881014,reactor Tripped from Phase Imbalance on 6.9 Kv Power to Four Operating Reactor Coolant Pumps.Grid Disturbance,Which Affected Startup & Auxiliary Transformer Power Sources on One Offsite Power Line,Possible Initiator PNO-V-88-036, on 880607,voters Voted on Two Measures Re Future Operations of Plant.Measure B,Which Required Immediate Shutdown of Plant,Failed to Pass.Measure C,Which Will Continue Plant Operations on Trial Basis,Passed1988-06-0808 June 1988 PNO-V-88-036:on 880607,voters Voted on Two Measures Re Future Operations of Plant.Measure B,Which Required Immediate Shutdown of Plant,Failed to Pass.Measure C,Which Will Continue Plant Operations on Trial Basis,Passed PNO-V-88-030, on 880504,reactor Tripped & Leak Discoverd on Letdown Cooler a Relief Valve.Util Conducting post-trip Review to Determine Cause of Trip & Confirm Source of Leak1988-05-0404 May 1988 PNO-V-88-030:on 880504,reactor Tripped & Leak Discoverd on Letdown Cooler a Relief Valve.Util Conducting post-trip Review to Determine Cause of Trip & Confirm Source of Leak PNO-V-88-029, on 880429,SMUD Released Info Re Potential Agreement W/Duke Power Co (DPC) Under Which DPC Employee Would Become Chief Executive Officer,Nuclear,Reporting to New Rancho Seco Mgt Committee.Meeting Planned on 8805091988-04-29029 April 1988 PNO-V-88-029:on 880429,SMUD Released Info Re Potential Agreement W/Duke Power Co (DPC) Under Which DPC Employee Would Become Chief Executive Officer,Nuclear,Reporting to New Rancho Seco Mgt Committee.Meeting Planned on 880509 PNO-V-88-024, util Received Final Authorization from NRR to Restart Facility on 880330.Enhanced Operational Readiness Insp Team & Resident Insp Staff Observing Reactor Startup Which Will Require 6-10 H to Complete1988-03-30030 March 1988 PNO-V-88-024:util Received Final Authorization from NRR to Restart Facility on 880330.Enhanced Operational Readiness Insp Team & Resident Insp Staff Observing Reactor Startup Which Will Require 6-10 H to Complete PNO-V-88-023, on 880323,undervoltage Attachment of CRD Breaker Failed to Operate.Interference of Undervoltage Attachment Trip Lever W/Exterior Label Plate,Noted. Investigation Continuing1988-03-24024 March 1988 PNO-V-88-023:on 880323,undervoltage Attachment of CRD Breaker Failed to Operate.Interference of Undervoltage Attachment Trip Lever W/Exterior Label Plate,Noted. Investigation Continuing PNO-V-88-021, on 880315,leak of About 100 Gpm Occurred from Downstream Pressure Relief Valve While Opening Upstream Isolation Valve.Approx 650 Gallons of Water Released.No Radioactivity Released.Investigation Underway1988-03-16016 March 1988 PNO-V-88-021:on 880315,leak of About 100 Gpm Occurred from Downstream Pressure Relief Valve While Opening Upstream Isolation Valve.Approx 650 Gallons of Water Released.No Radioactivity Released.Investigation Underway PNO-V-88-017, on 880301,util Certified That All Prerequisites for non-nuclear Heatup of Plant to Normal Operating Test Temp & Pressure Completed.Reactor Criticality Scheduled for 8803201988-03-0101 March 1988 PNO-V-88-017:on 880301,util Certified That All Prerequisites for non-nuclear Heatup of Plant to Normal Operating Test Temp & Pressure Completed.Reactor Criticality Scheduled for 880320 ML20147H0841988-03-0101 March 1988 PNS-V-88-001:on 880229,plant Notified of Bomb Threat. Licensee Conducted Routine Search,Found Three Suspicious Packages.Packages Examined & Found to Be Innocuous PNO-V-88-016, on 880224,RK Byrne Recommended Closure of Plant to Board of Directors at 880224 Meeting.Recommendation Will Be Considered by Board for Action on 880303.Licensee Continuing Loss of Offsite Power Testing1988-02-25025 February 1988 PNO-V-88-016:on 880224,RK Byrne Recommended Closure of Plant to Board of Directors at 880224 Meeting.Recommendation Will Be Considered by Board for Action on 880303.Licensee Continuing Loss of Offsite Power Testing PNO-V-88-011, on 880208,fire Occurred in Annunciator Control Cabinet B During Cold Shutdown.Cause of Fire Not Yet Determined.Cabinets a & B Electronically Isolated.All Testing Temporarily Suspended.No Loss of DHR Occurred1988-02-0909 February 1988 PNO-V-88-011:on 880208,fire Occurred in Annunciator Control Cabinet B During Cold Shutdown.Cause of Fire Not Yet Determined.Cabinets a & B Electronically Isolated.All Testing Temporarily Suspended.No Loss of DHR Occurred PNO-V-88-010, on 880207,licensee Inadvertently Drained Approx 1,100 Gallons of Slightly Contaminated Borated Water from Borated Water Storage Tank During Testing.Testing Suspended Until Investigation & Further Corrective Action Completed1988-02-0808 February 1988 PNO-V-88-010:on 880207,licensee Inadvertently Drained Approx 1,100 Gallons of Slightly Contaminated Borated Water from Borated Water Storage Tank During Testing.Testing Suspended Until Investigation & Further Corrective Action Completed PNO-V-88-008, on 880203,unplanned Start of Bruce Gm Diesel Generator a Occurred.Caused by Failure to Position Generator Control Switch While Performing Loss of Offsite Power Test. Further Startup Testing Suspended1988-02-0404 February 1988 PNO-V-88-008:on 880203,unplanned Start of Bruce Gm Diesel Generator a Occurred.Caused by Failure to Position Generator Control Switch While Performing Loss of Offsite Power Test. Further Startup Testing Suspended PNO-V-88-009, on 880204,individual May Have Received 458 Rem Exposure to Back of Left Knee from 43 Uci Co-60.Caused by Individual Welding on Dhr.Licensee Investigating Matter & Will Inform Region V of Results1988-02-0404 February 1988 PNO-V-88-009:on 880204,individual May Have Received 458 Rem Exposure to Back of Left Knee from 43 Uci Co-60.Caused by Individual Welding on Dhr.Licensee Investigating Matter & Will Inform Region V of Results PNO-V-87-084, on 871216,licensee Induced Unexpected Load Transient on One safety-related Diesel Generator During Loss of Offsite Power Test.Dhr & Control Units Unaffected.Cause Being Investigated1987-12-16016 December 1987 PNO-V-87-084:on 871216,licensee Induced Unexpected Load Transient on One safety-related Diesel Generator During Loss of Offsite Power Test.Dhr & Control Units Unaffected.Cause Being Investigated PNO-V-87-080, on 871204,inspectors Identified Worker Lying Down on Scaffolding Erected at Grade Level in Reactor Bldg. Individual Waiting for Addl Staging of Equipment.Security Badge Suspended & Investigation Initiated1987-12-0808 December 1987 PNO-V-87-080:on 871204,inspectors Identified Worker Lying Down on Scaffolding Erected at Grade Level in Reactor Bldg. Individual Waiting for Addl Staging of Equipment.Security Badge Suspended & Investigation Initiated PNO-V-87-075, on 871111,control Room/Technical Support Ctr Essential HVAC Sys Train B Failed to Start During Planned Testing.Licensee Believes Tampering Occurred to Cause Miswiring.Plans for Addressing Tampering Being Formulated1987-11-13013 November 1987 PNO-V-87-075:on 871111,control Room/Technical Support Ctr Essential HVAC Sys Train B Failed to Start During Planned Testing.Licensee Believes Tampering Occurred to Cause Miswiring.Plans for Addressing Tampering Being Formulated ML20236L0341987-11-0505 November 1987 PNS-V-87-004B:on 870616,Sacramento Narcotics Task Force Arrested Six Persons Involved in Possession,Sale & Use of Cocaine.Util Clerk Indicated Transactions Conducted in Site Parking Lot or Offsite,Not at Facility ML20235X1611987-09-23023 September 1987 PNS-V-87-007:on 870923,security Received Info That Three Local Television Stations Telephoned by Male Indicating Intention to Blow Up Plant.Surveillance Activities increased.Common-user Areas Searched But Nothing Identified PNO-V-87-061, PG&E Publicly Announced Plan to Buy Out Smud & Permanently Close Plant.Pg&E Plan Will Be Presented by 870915.Plan Includes Promise to Freeze Electricity Rates for Current Smud Customers for Several Yrs1987-09-0404 September 1987 PNO-V-87-061:PG&E Publicly Announced Plan to Buy Out Smud & Permanently Close Plant.Pg&E Plan Will Be Presented by 870915.Plan Includes Promise to Freeze Electricity Rates for Current Smud Customers for Several Yrs PNO-V-87-060, on 870901,util Board President,C Wilcox Resigned.Caused by Expressed Dissatisfaction W/Dissentions Among Five Directors & Board Members Interference W/Hiring Process for New District Manager by Contacting Candidate1987-09-0202 September 1987 PNO-V-87-060:on 870901,util Board President,C Wilcox Resigned.Caused by Expressed Dissatisfaction W/Dissentions Among Five Directors & Board Members Interference W/Hiring Process for New District Manager by Contacting Candidate PNO-V-87-055, on 870729,unusual Event Declared Due to Loss of Emergency Power Supplies Due to Jacket Water Leak in Engine Driven Jacket Water Pump.Licensee Maintaining Six Operable Offsite Power Transmission Lines1987-07-30030 July 1987 PNO-V-87-055:on 870729,unusual Event Declared Due to Loss of Emergency Power Supplies Due to Jacket Water Leak in Engine Driven Jacket Water Pump.Licensee Maintaining Six Operable Offsite Power Transmission Lines ML20236A3451987-07-21021 July 1987 PNS-V-87-006:on 870721,Sacramento,CA Television Channel 3 Scheduled to Broadcast First of three-part Series on Drug Use at Facility.Nrc Interviewed Informant on 870719.Info Comprehensive & Factual.Law Enforcement Authority Informed ML20245C0141987-06-25025 June 1987 PNS-V-87-004A:on 870617,Sacramento Narcotics Task Force Arrested Six Persons Involved in Possession,Sale & Use of Cocaine,Including Util Clerk & Util Helper Employed at Plant.Licensee Interviewed 36 Employees Re Drug Sales & Use PNO-V-87-046, on 870521,licensee Determined That Another Control Cable Improperly Installed in Tray for Instrumentation Cable.Licensee Currently Evaluating Need for Performing 100% Insp of Rerouted Cables in 1976-19861987-06-19019 June 1987 PNO-V-87-046:on 870521,licensee Determined That Another Control Cable Improperly Installed in Tray for Instrumentation Cable.Licensee Currently Evaluating Need for Performing 100% Insp of Rerouted Cables in 1976-1986 ML20215G9631987-06-17017 June 1987 PNS-V-87-004:on 870616,Sacramento Narcotics Task Force Arrested Six Persons Involved in Possession,Sale & Use of Cocaine as Result of tri-county Wide Drug Investigation.Two Individuals Employed by Util.Investigation Continuing PNO-V-87-034, on 870502,w/plant in Cold Shutdown for 16 Months,Licensee Began Planned 7-day Dual Train Decay Heat Sys Outage.Steam Generators Operable & Available for Dhr. Resident Inspectors Monitoring Outage1987-05-0505 May 1987 PNO-V-87-034:on 870502,w/plant in Cold Shutdown for 16 Months,Licensee Began Planned 7-day Dual Train Decay Heat Sys Outage.Steam Generators Operable & Available for Dhr. Resident Inspectors Monitoring Outage PNO-V-87-033, on 870429,C Wilcox Announced During Press Conference That C Andognini Had Been Selected as Util New Chief Executive Officer Reporting Directly to Util Board of Directors,Effective 8705041987-04-30030 April 1987 PNO-V-87-033:on 870429,C Wilcox Announced During Press Conference That C Andognini Had Been Selected as Util New Chief Executive Officer Reporting Directly to Util Board of Directors,Effective 870504 ML20209J4121987-04-27027 April 1987 PNS-V-87-003:on 870427,two safety-related Wires Inside 480- Volt West Switchgear Room Controlling Sys for Train a Suction Valve from Borated Water Tank to Low Pressure Safety Injection/Containment Spray Sys Discovered Cut PNO-V-87-026A, on 870402,licensee Informed NRC That Stop Work Order for Plant safety-related Welding Work Partially Lifted After New Weld Filler Matl W/Proper Documentation Procured.Welding Will Be Resumed Using New Matl1987-04-0202 April 1987 PNO-V-87-026A:on 870402,licensee Informed NRC That Stop Work Order for Plant safety-related Welding Work Partially Lifted After New Weld Filler Matl W/Proper Documentation Procured.Welding Will Be Resumed Using New Matl PNO-V-87-027, on 870304,util Notified by B&W in Part 21 Rept That Potential Lack of Separation Existed in High Nuclear Flux Channel of Reactor Protection Sys.Util Considers Problem Reportable Event Under 10CFR50.721987-04-0101 April 1987 PNO-V-87-027:on 870304,util Notified by B&W in Part 21 Rept That Potential Lack of Separation Existed in High Nuclear Flux Channel of Reactor Protection Sys.Util Considers Problem Reportable Event Under 10CFR50.72 PNO-V-87-026, on 870326,licensee QA Manager Issued Stop Work Order for All safety-related Welding.Audit Disclosed 92% of Weld Filler Matl Available Had Documentation Deficiencies. Internal Task Force Formed to Assess Deficiencies1987-03-26026 March 1987 PNO-V-87-026:on 870326,licensee QA Manager Issued Stop Work Order for All safety-related Welding.Audit Disclosed 92% of Weld Filler Matl Available Had Documentation Deficiencies. Internal Task Force Formed to Assess Deficiencies ML20211G3801987-02-17017 February 1987 PNS-V-87-001A:on 870214,preliminary Investigation by Util Determined That Homemade Security Drawing Found Unattended on Site on 870212 Had Been Made by One of Licensee Engineers.Investigation by Licensee Continuing ML20211F3291987-02-17017 February 1987 PNS-V-87-002:on 870213,call Received Threatening Direct Attack on Site Internal Areas,Security Sys & Personnel. Licensee Declared Security Alert Followed by Declaration of Unusual Event.Fbi Notified.Investigation Continuing ML20210V3491987-02-13013 February 1987 PNS-V-87-001:on 870212,security Officer Found 18x24-inch Drawing on Ground Next to Centrally Located Roadway Inside Protected Area,Adjacent to Gantry Crane.Security Alert Declared.State of CA Notified.Investigation Continuing 1989-09-05 Category:TEXT-INSPECTION & AUDIT & I&E CIRCULARS MONTHYEARIR 05000312/19990031999-08-31031 August 1999
[Table view]Insp Rept 50-312/99-03 on 990802-06.No Violations Noted. Major Areas Inspected:Decommissioning & Dismantlement Activities,Including Organization,Mgt & Cost Controls IR 05000312/19990021999-03-19019 March 1999 Insp Rept 50-312/99-02 on 990309-11.No Violations Noted. Major Areas Inspected:Licensee Physical Security Program, Including Access Authorization,Alarm Station & Communication & Testing & Maint IR 05000312/19980031998-08-0707 August 1998 Insp Rept 50-312/98-03 on 980706-09.No Violations Noted. Major Areas Inspected:Review of Licensee Programs Related to SFP Safety,Status of Decommissioning,Safety Review & self-assessments & Radiological Safety Programs ML20248K6301998-06-0303 June 1998 Notice of Violation from Insp on 980519-21.Violation Noted:Inspector Determined That Licensee Failed to Review & Consider All Info Obtained During Background Investigation IR 05000312/19980021998-06-0303 June 1998 Insp Rept 50-312/98-02 on 980519-21.Violations Noted. Major Areas Inspected:Announced Insp of Licensee Physical Security Program ML20202C4771998-02-0505 February 1998 Notice of Violation from Insp on 980105-08.Violation Noted: on 971222,shipment of Scrap Metal,In Form of Auxiliary Boiler,Was Released from Rancho Seco Site W/O Having Been Surveyed ML20202C4981998-02-0505 February 1998 Insp Rept 50-312/98-01 on 980105-08.Violations Noted.Major Areas Inspected:Organization,Mgt & Cost Controls,Maint & Surveillance,Cold Weather Preparation,Decommissioning Performance & Status Review & Health Physics ML20198K5451997-10-21021 October 1997 Notice of Violation from Insp on 970922-25.Violation Noted:On 970806,thermocouple for Spent Fuel Pool Temp Indicator Was Found to Be out-of-tolerance During Annual Calibration IR 05000312/19970041997-10-21021 October 1997 Insp Rept 50-312/97-04 on 970922-25.Violations Noted. Major Areas Inspected:Organization,Mgt,Cost Control,Safety Reviews,Design Changes,Mods,Decommissioning Performance & Status Review IR 05000312/19970031997-06-17017 June 1997 Insp Rept 50-312/97-03 on 970603-05.No Violations Noted. Major Areas Inspected:Records & Repts,Testing & Maint, Protected Area Barrier & Detection Aids,Assessment Aids, Alarm Station & Communication & Security System IR 05000312/19970021997-04-25025 April 1997 Insp Rept 50-312/97-02 on 970331-0403.No Violations Noted. Major Areas Inspected:Incremental Decommissioning Activities in Turbine Bldg,Radiation Protection,Sfp Activities & Quality Assurance IR 05000312/19970011997-03-21021 March 1997 Insp Repts 50-312/97-01 & 72-0011/97-01 on 970224-27.No Violations Noted.Major Areas Inspected:Licensee Planned Work Associated W/Dismantlement of Turbine Bldg & Radiological Controls Being Implemented During Work Activities IR 05000312/19960031996-09-27027 September 1996 Insp Repts 50-312/96-03 & 72-0011/96-01 on 960909-12.No Violations Noted.Major Areas Inspected:Sfp & Radiological Ts,Radiological Exposure Controls & Implementation of New 10CFR49 Shipping Regulations IR 05000312/19930061993-09-0202 September 1993 Insp Rept 50-312/93-06 on 930819.No Violations or Deviations Noted.Major Areas Inspected:Licensee Employee Concerns Program IR 05000312/19930041993-08-11011 August 1993 Mgt Meeting Rept 50-312/93-04 on 930727.Major Areas Discussed:Status of Activities,Including Maint of Plant Equipment,Fire Protection Equipment & Plant Personnel Morale IR 05000312/19920071992-12-10010 December 1992 Insp Rept 50-312/92-07 on 921110-11.No Deviations or Violations Noted.Major Areas inspected:1992 Annual Emergency Preparedness Exercise & Associated Critiques & Inspector Identified Items IR 05000312/19900141990-11-14014 November 1990 Insp Rept 50-312/90-14 on 901003-04,09-11 & 1102.Violations Noted.Areas inspected:follow-up of Licensee Event Repts, Liquid Effluent,Solid Waste & Allegations IR 05000312/19900111990-07-31031 July 1990 Insp Rept 50-312/90-11 on 900527-0706.No Violations or Deviations Noted.Major Areas Inspected:Operational Safety Verification,Health Physics & Security Observations,Esf Sys Walkdown,Maint,Surveillance & Testing & QA IR 05000312/19890161989-09-21021 September 1989 Enforcement Conference Rept 50-312/89-16 on 890915. Violations Noted.Major Areas Discussed:Violations Noted in Insp Rept 50-312/89-16 & Indications That Findings Represent Decrease in Mgt Commitment to Emergency Preparedness IR 05000312/19890121989-09-21021 September 1989 Insp Rept 50-312/89-12 on 890801-04,21-25 & 30.No Violations Noted.Major Areas Inspected:Occupational Exposure,Including Alara,Radwaste Sys,Liquid & Liquid Wastes & Radwaste Mgt & Transportation PNO-V-89-056, on 890911,SMUD Board Rejected Golden State Energy Proposal to Purchase Plant1989-09-12012 September 1989 PNO-V-89-056:on 890911,SMUD Board Rejected Golden State Energy Proposal to Purchase Plant IR 05000312/19890141989-09-11011 September 1989 Insp Rept 50-312/89-14 on 890828-0901.Violations Noted Re Failure to Conduct Required Semiannual Health Physics Drill & Initial Training.Major Areas Inspected:Operational Status of Emergency Preparedness Program PNO-V-89-053, on 890901,Golden State Energy Proposal to Purchase Rancho Seco Submitted to Util,Including MOU for Purchase of Plant,Power Sale Agreement & Interim Operation & Maint of Facility & Rate Structure.Vote Expected on 8909071989-09-0505 September 1989 PNO-V-89-053:on 890901,Golden State Energy Proposal to Purchase Rancho Seco Submitted to Util,Including MOU for Purchase of Plant,Power Sale Agreement & Interim Operation & Maint of Facility & Rate Structure.Vote Expected on 890907 PNO-V-89-050, on 890823,util Announced That Board of Directors Would Meet on 890825 Re Proposed Golden State Energy Purchase of Plant.Key Issues Listed,Including MOU Addressing Power Sale Agreement1989-08-23023 August 1989 PNO-V-89-050:on 890823,util Announced That Board of Directors Would Meet on 890825 Re Proposed Golden State Energy Purchase of Plant.Key Issues Listed,Including MOU Addressing Power Sale Agreement IR 05000312/19890101989-08-10010 August 1989 Insp Rept 50-312/89-10 on 890603-0721.No Violations Noted. Major Areas Inspected:Areas of Operational Safety Verification,Health Physics & Security Observations,Maint, Surveillance & Testing & QA & Followup Items PNO-V-89-044, on 890720,util Board Voted by 4-1 Vote to Enter Exclusive Negotiations W/Quadrex Corp for Possible Sale of Plant.Key Milestone Dates Listed.Board Maintained That Several Key Issues Must Be Addressed Before Voting on Sale1989-07-21021 July 1989 PNO-V-89-044:on 890720,util Board Voted by 4-1 Vote to Enter Exclusive Negotiations W/Quadrex Corp for Possible Sale of Plant.Key Milestone Dates Listed.Board Maintained That Several Key Issues Must Be Addressed Before Voting on Sale IR 05000312/19890081989-07-11011 July 1989 Insp Rept 50-312/89-08 on 890422-0602.No Violations or Deviations Noted.Two non-cited Violations Discussed.Major Areas Inspected:Operational Safety Verification,Health Physics & Security Observations & ESF Sys Walkdown IR 05000312/19890111989-07-0606 July 1989 Insp Rept 50-312/89-11 on 890629-30.No Violations Noted. Major Areas Inspected:Licensee Radiochemical Analyses to Verify Accuracy of Measurements of Radionuclides in Release Tank Water & Sediment from Effluent Discharge Point PNO-V-89-039, on 890620,util Announced That Licensee Open to Offers to Purchase Facility Until 890630.Of All Bidders,Only Quadrex Corp Proposes to Operate Facility as Nuclear Plant. Evaluation of Bids Expected to Be Completed by End of Jul1989-07-0303 July 1989 PNO-V-89-039:on 890620,util Announced That Licensee Open to Offers to Purchase Facility Until 890630.Of All Bidders,Only Quadrex Corp Proposes to Operate Facility as Nuclear Plant. Evaluation of Bids Expected to Be Completed by End of Jul PNO-V-89-036, on 890620,SMUD Voted 3-2 to Allow 10 Days for Qualified Private Bidders to Submit Proposals to Take Over Facility.Conditions Imposed on Bidders Listed.Existing Quadrex Proposal Withdrawn1989-06-21021 June 1989 PNO-V-89-036:on 890620,SMUD Voted 3-2 to Allow 10 Days for Qualified Private Bidders to Submit Proposals to Take Over Facility.Conditions Imposed on Bidders Listed.Existing Quadrex Proposal Withdrawn PNO-V-89-035, on 890619,licensee Announced That D Keuter Had Been Appointed New Site Manager & Jr Shetler as Deputy Site Manager.Licensee Recognizes That Organizational Changes Subj to NRC Approval1989-06-20020 June 1989 PNO-V-89-035:on 890619,licensee Announced That D Keuter Had Been Appointed New Site Manager & Jr Shetler as Deputy Site Manager.Licensee Recognizes That Organizational Changes Subj to NRC Approval PNO-V-89-034, on 890615,offer to Assume Financial & Technical Responsibility for Plant Announced.Plant Presently in Cold Shutdown W/Activities Continuing Towards off-loading Reactor Core in Oct 19891989-06-16016 June 1989 PNO-V-89-034:on 890615,offer to Assume Financial & Technical Responsibility for Plant Announced.Plant Presently in Cold Shutdown W/Activities Continuing Towards off-loading Reactor Core in Oct 1989 PNO-V-89-033C, on 890609,plant Reached Cold Shutdown in Preparation for Reinstalling Refueling Bridge Into Reactor Bldg.Bridge Removed for Refurbishment/Mod.Reduction in Force of Nonessential Contractor Personnel in Progress1989-06-12012 June 1989 PNO-V-89-033C:on 890609,plant Reached Cold Shutdown in Preparation for Reinstalling Refueling Bridge Into Reactor Bldg.Bridge Removed for Refurbishment/Mod.Reduction in Force of Nonessential Contractor Personnel in Progress PNO-V-89-033B, on 890608,licensee Continuing Cooldown of Plant.Ceo Nuclear,J Firlit,Announced Resignation.Work Force Reductions Initiated Which Will Initially Involve Approx 420 Nonessential Contractor Clerical & Crafts Personnel1989-06-0808 June 1989 PNO-V-89-033B:on 890608,licensee Continuing Cooldown of Plant.Ceo Nuclear,J Firlit,Announced Resignation.Work Force Reductions Initiated Which Will Initially Involve Approx 420 Nonessential Contractor Clerical & Crafts Personnel PNO-V-89-033A, on 890607,util Shut Down Plant & Entered Hot Shutdown Due to Voter Defeat of Measure K.Util Continuing to Implement Contingency Plan to Remove Plant from Svc. Reductions in Site Work Force Under Consideration1989-06-0707 June 1989 PNO-V-89-033A:on 890607,util Shut Down Plant & Entered Hot Shutdown Due to Voter Defeat of Measure K.Util Continuing to Implement Contingency Plan to Remove Plant from Svc. Reductions in Site Work Force Under Consideration PNO-V-89-033, on 890606,voters Defeated Measure K,Encouraging Util to Cease Operating Facility.Util Board Previously Announced That Plant Would Be Shutdown If Measure K Defeated.Safe Shutdown Plan Implemented1989-06-0707 June 1989 PNO-V-89-033:on 890606,voters Defeated Measure K,Encouraging Util to Cease Operating Facility.Util Board Previously Announced That Plant Would Be Shutdown If Measure K Defeated.Safe Shutdown Plan Implemented PNO-V-89-030, on 890518,airborne Process Monitors for Reactor Bldg Stack,Auxiliary Bldg Stack & Auxiliary Bldg Grade Level Vent Inoperable.Caused by Computer Controlled Svc Air Purge Valves in Open Position.Possibly Caused by Software Errors1989-05-19019 May 1989 PNO-V-89-030:on 890518,airborne Process Monitors for Reactor Bldg Stack,Auxiliary Bldg Stack & Auxiliary Bldg Grade Level Vent Inoperable.Caused by Computer Controlled Svc Air Purge Valves in Open Position.Possibly Caused by Software Errors IR 05000312/19890071989-04-28028 April 1989 Insp Rept 50-312/89-07 on 890417-21.No Violations Noted. Major Areas Inspected:Previously Identified Items & Status of Emergency Preparedness Program IR 05000312/19890041989-03-31031 March 1989 Insp Rept 50-312/89-04 on 890114-0303.Violations Noted.Major Areas Inspected:Operational Safety Verification,Health Physics & Security Observations,Esf Sys Walkdown,Maint,Qa Surveillance & Testing & Followup Items ML20248J6521989-03-31031 March 1989 Notice of Violation from Insp on 890114-0303.Violations Noted:Engineering Change Notice Not Initiated for Rebuilt Governor for Auxiliary Feed Pump Installed on 890131 & Maint Work Request Not Reviewed Prior to Performance of Test IR 05000312/19880391989-03-28028 March 1989 SALP Rept 50-312/88-39 for July 1986 - Dec 1988 ML20244A8021989-03-28028 March 1989 SALP Rept 50-312/88-39 for July 1986 - Dec 1988 ML20244B1141989-03-27027 March 1989 Notice of Violation from Insp on 890123-0217.Violations Noted:Nonconformance Rept Not Written After Determination That Debris Caused Failure of Two Instrument Air Sys Check Valves During Performance of Test Procedure STP-774 ML20244B1161989-03-24024 March 1989 Insp Rept 50-312/89-01 on 890123-0217.Violations Noted.Major Areas Inspected:Maint Program & Implementation of Related Activities IR 05000312/19880421989-02-13013 February 1989 Insp Rept 50-312/88-42 on 881227-30 & 890125-27.No Violations Noted.Major Areas Inspected:Followup Items,Part 21 Repts,Lers & Licensee Program to Maintain Quality of Diesel Generator Fuel Oil IR 05000312/19880411989-02-13013 February 1989 Insp Rept 50-312/88-41 on 881214-890103.No Violations Noted. Major Areas Inspected:Onsite Followup of Event of 881212 & Associated Mgt Meetings on 881219 & 890103.Weaknesses Observed Re Decision to Operate Plant in Degraded State IR 05000312/19880401989-02-0606 February 1989 Insp Rept 50-312/88-40 on 881208-890113.No Violations or Deviations Noted.Major Areas Inspected:Operational Safety Verification,Health Physics & Security Observations,Esf Sys Walkdown,Maint,Qa & Surveillance & Testing ML20235T2211989-02-0606 February 1989 Exam Rept 50-312/OL-88-02 on 881206-13.Exam Results:All Seven Senior Reactor Operator Candidates Passed Written & Oral Exams ML20196B6881988-11-30030 November 1988 PNS-V-88-006:on 881126,licensee Received Telcon Alleging That Nonlicensed Equipment Operator Observed Using Illegal Drugs.Individual Submitted to Urinalysis Test & Showed Positive for Marijuana.Individual Terminated on 881130 IR 05000312/19880351988-11-21021 November 1988 Mgt Meeting Rept 50-312/88-35 on 881114.Major Areas Discussed:Licensee Operational Performance Since Restart in Mar 1988 & Progress Re Restart Commitments in Areas of Engineering,Procurement,Maint & Effluent Sys Areas 1999-08-31 |
r PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-V-86-69 Date: 10/3/86 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public intorest significance. The information presented is as initially received without verification er cvaluation and is basically all that is known by Region V. staff on this date.
FACILITY: Sacramento Municipal Utility District Emergency Classification Rancho Seco)hrelear Power Plant Notification of Unusual Event Sacramento Counth California Alert Docket No.j50-312 Site Area Emergency General Emergency.
C X Not Applicable
SUBJECT:
BRIEF LOSS OF DECAY HEAT REMOVAL AT RANCHO SECO At cpproximately 9:47 PDT, October 3, 1986, decay heat removal was lost for tpproximately 13 minutes at Rancho Seco. The plant has been in cold shutdown fcr approximately 281 days. Prior to the loss of cooling, decay heat removal ic:p B was in operation. Loop A was not functional due to a planned
. maintenance activity in process. The reactor coolant system was drained to cid-loop.
Ls:2 of decay heat removal was caused by closure of an isolation block valve on tha decay heat removal pump suction. The valve closure was due to a spurious cignal received by Safety Features Actuations Systems (SFAS) analog channel B.
Tha licensee believes the spurious signal was generated by a electrical transient on 120 volt vital AC bus SIB.
Inc:re themocouples readings remained stable at approximately 84*F. The resident in:pector staff is investigating. The three counties surrounding the plant have b :n notified, and the licensee has made the information available to the media.
This information is current as of 4:02 PM PDT, October 3, 1986.
CONTACT: L. Miller, 463-3869 DISTRIBUTION
!! St. MNBB Phillips E/W Willste Air Rights N 8 Mail:
Ch irman Zech EDO NRR IE NMSS ADM:DMB Comm. Roberts PA OIA RES DOT:Trans Only Comm. Bernthal MPA AEOD Comm. Carr ELD Comm. Asselstine Regions:
SECY INPOTl 21NSAC #//J O ACRS Licensee: /0/90 REGION V: FORM 211 CA (Reactor Licensecs)
PDR Resident Inspector _ (Revised 3/14/83)
IlQ Operations Center 'IlSD 0
0610150020 861003 l PDH ILE PNO-V-86-069 PDR
(