PNO-V-86-046, on 860721,two Seismic Events Occurred in Mammoth Lakes Area.Largest Event Measured 6.2 on Richter Scale & Second Measured 4.4.First Event Not Felt at Diablo Canyon.Second Event Triggered Teratec Recording
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| ML20207J559 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon, Rancho Seco, 05000000 |
| Issue date: | 07/21/1986 |
| From: | Mendonca M, Miller L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | |
| References | |
| PNO-V-86-046, PNO-V-86-46, NUDOCS 8607290165 | |
| Download: ML20207J559 (1) | |
Category:PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO
MONTHYEARPNO-V-93-013, on 930809,during pre-announced anti-nuclear demonstration,13 Protestors Illegally Entered Plant Access Gate & Immediately Taken Into Custody by Sheriff Deputies. Demonstration Related to CP Recapture Hearings for Plant1993-08-0909 August 1993
[Table view]PNO-V-93-013:on 930809,during pre-announced anti-nuclear demonstration,13 Protestors Illegally Entered Plant Access Gate & Immediately Taken Into Custody by Sheriff Deputies. Demonstration Related to CP Recapture Hearings for Plant PNO-V-92-033, on 921019,US Geological Survey Notified California Governor Ofc of Significant Likelihood That Earthquake of Magnitude 6 Will Occur on San Andreas Fault Near Parkfield1992-10-20020 October 1992 PNO-V-92-033:on 921019,US Geological Survey Notified California Governor Ofc of Significant Likelihood That Earthquake of Magnitude 6 Will Occur on San Andreas Fault Near Parkfield PNO-V-91-003, on 910307,unit 1 Shutdown for Refueling Operations & Loss of Offsite Power.Licensee Personnel Manually Moved New Module,Still in Mast,Away from Reactor Vessel & Core1991-03-0707 March 1991 PNO-V-91-003:on 910307,unit 1 Shutdown for Refueling Operations & Loss of Offsite Power.Licensee Personnel Manually Moved New Module,Still in Mast,Away from Reactor Vessel & Core PNO-V-90-033, on 900726,observed Crack in Charging Pump Suction Header Piping Caused by Boric Acid Crystals on Elbow of Pump.Licensee Considers Piping Operable & to Be Repaired W/O Plant Shut Down.Inspector Monitoring Plant1990-07-27027 July 1990 PNO-V-90-033:on 900726,observed Crack in Charging Pump Suction Header Piping Caused by Boric Acid Crystals on Elbow of Pump.Licensee Considers Piping Operable & to Be Repaired W/O Plant Shut Down.Inspector Monitoring Plant PNO-II-89-066, licensees Prepared for Adverse Weather Conditions Due to Hurricane.Briefings Held W/Key Managers on Responsibilities to Check All Trailers,Secure Crane Hooks & Increase Emergency Food Supplies1989-09-21021 September 1989 PNO-II-89-066:licensees Prepared for Adverse Weather Conditions Due to Hurricane.Briefings Held W/Key Managers on Responsibilities to Check All Trailers,Secure Crane Hooks & Increase Emergency Food Supplies PNO-II-89-066A, updates Status of Hurricane Hugo for Nuclear Facilities in Southeast.Manning of Incident Response Ctr by Region II Continuing1989-09-21021 September 1989 PNO-II-89-066A:updates Status of Hurricane Hugo for Nuclear Facilities in Southeast.Manning of Incident Response Ctr by Region II Continuing 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 ML20247N0071989-09-11011 September 1989 PNS-I-89-015:revised Notification of Telephone Threat, Correcting Event Date from 890909 to 890911.Call, Originating from Limerick or Peach Bottom,Received at Corporate Ofc.On 890525,threat Received at Peach Bottom 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-89-047, on 890808,earthquake & Aftershock of 5.1 & 4.2 Magnitudes,Respectively,Occurred Approx 15 Miles Southwest of San Jose,Ca.Reactors Shutdown During Earthquake.Tour of GE Reactor Disclosed No Damage1989-08-0808 August 1989 PNO-V-89-047:on 890808,earthquake & Aftershock of 5.1 & 4.2 Magnitudes,Respectively,Occurred Approx 15 Miles Southwest of San Jose,Ca.Reactors Shutdown During Earthquake.Tour of GE Reactor Disclosed No Damage 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-IV-89-045, on 890703,earthquake Near Tremonton,Ut Occurred.Earthquake Safety Interlocks Did Not Trip & No Damage Occurred1989-07-0505 July 1989 PNO-IV-89-045:on 890703,earthquake Near Tremonton,Ut Occurred.Earthquake Safety Interlocks Did Not Trip & No Damage Occurred 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 PNO-V-89-022, on 880403,earthquake of Magnitude of 4.5 on Richter Scale Occurred 10 Miles Northeast of San Jose,Ca. Automatic Seismic Protection Did Not Trigger Shutdown. Reactors Manually Shutdown.No Radioactive Release Occurred1989-04-0303 April 1989 PNO-V-89-022:on 880403,earthquake of Magnitude of 4.5 on Richter Scale Occurred 10 Miles Northeast of San Jose,Ca. Automatic Seismic Protection Did Not Trigger Shutdown. Reactors Manually Shutdown.No Radioactive Release Occurred PNO-IV-89-020, Region IV Notified of Recent Reactor Trip at Palo Verde Unit 3 That Was Complicated by Inability to Open Steam Generator Atmospheric Dump Valves Mfg by Control Components,Inc.No Sticking Problems Noted at Other Plants1989-03-23023 March 1989 PNO-IV-89-020:Region IV Notified of Recent Reactor Trip at Palo Verde Unit 3 That Was Complicated by Inability to Open Steam Generator Atmospheric Dump Valves Mfg by Control Components,Inc.No Sticking Problems Noted at Other Plants 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-I-88-116, on 881108,voters Voted Down state-wide Referendum to Shutdown Plants in State of Ma If Nuclear Waste Produced in Process1988-11-0909 November 1988 PNO-I-88-116:on 881108,voters Voted Down state-wide Referendum to Shutdown Plants in State of Ma If Nuclear Waste Produced in Process 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-88-048, on 880717,unit Manually Tripped & Natural Cooldown Commenced as Result of Ground Fault in 12 Kv non- Vital Buses.Event Investigation Team Formed to Determine Location & Cause of Ground Fault1988-07-18018 July 1988 PNO-V-88-048:on 880717,unit Manually Tripped & Natural Cooldown Commenced as Result of Ground Fault in 12 Kv non- Vital Buses.Event Investigation Team Formed to Determine Location & Cause of Ground Fault PNO-V-88-044, on 880627,earthquake Occurred 5 Miles East of Santa Cruz,Ca.Seismic Instrumentation Not Triggered at Vallecitos,Aerotest Operations or at Univ of California at Berkeley1988-06-27027 June 1988 PNO-V-88-044:on 880627,earthquake Occurred 5 Miles East of Santa Cruz,Ca.Seismic Instrumentation Not Triggered at Vallecitos,Aerotest Operations or at Univ of California at Berkeley PNO-V-88-038, on 880612,earthquake Occurred on Calaveras Fault within 50 Miles of Identified Facilities.All Reactors Shutdown at Time of Earthquake.No Seismic Trips Observed. Insp Revealed No Signs of Damage at Facilities1988-06-13013 June 1988 PNO-V-88-038:on 880612,earthquake Occurred on Calaveras Fault within 50 Miles of Identified Facilities.All Reactors Shutdown at Time of Earthquake.No Seismic Trips Observed. Insp Revealed No Signs of Damage at Facilities 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-IV-88-040, on 880509,System Energy Resources,Inc to Manage & Operate All Middle South Nuclear Plants.Arkansas Power & Light & Louisiana Power & Light Will Apply for Appropriate License Amends1988-05-0909 May 1988 PNO-IV-88-040:on 880509,System Energy Resources,Inc to Manage & Operate All Middle South Nuclear Plants.Arkansas Power & Light & Louisiana Power & Light Will Apply for Appropriate License Amends 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 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-88-017, 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 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-I-88-020, on 880216,CA Mcneill Named Executive Director - Nuclear W/Responsibility of Directing Nuclear Operations, Including Nuclear Dept Reorganization & Restart Efforts of Peach Bottom1988-02-16016 February 1988 PNO-I-88-020:on 880216,CA Mcneill Named Executive Director - Nuclear W/Responsibility of Directing Nuclear Operations, Including Nuclear Dept Reorganization & Restart Efforts of Peach Bottom 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-I-88-017, on 880202,util to Announce Change to Corporate Mgt,Per Highly Critical INPO Ltr.Jh Austin Will Retire as of 880301 & Jl Everett Will Assume Duties of President Until Replacement Named1988-02-0202 February 1988 PNO-I-88-017:on 880202,util to Announce Change to Corporate Mgt,Per Highly Critical INPO Ltr.Jh Austin Will Retire as of 880301 & Jl Everett Will Assume Duties of President Until Replacement Named PNO-I-88-001, on 880104,realignment of Nuclear Mgt Updated. Action Provides for Corporate Officer at Each Plant to Elevate Level of Plant in Corporate Mgt Structure1988-01-0404 January 1988 PNO-I-88-001:on 880104,realignment of Nuclear Mgt Updated. Action Provides for Corporate Officer at Each Plant to Elevate Level of Plant in Corporate Mgt Structure 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-87-083, on 871213,reactor Tripped.Caused by Loss of Feed Water Pump 1-1.Cause of Trip Under Investigation. Variety of Maint Activities to Be Performed Before Restart1987-12-14014 December 1987 PNO-V-87-083:on 871213,reactor Tripped.Caused by Loss of Feed Water Pump 1-1.Cause of Trip Under Investigation. Variety of Maint Activities to Be Performed Before Restart 1993-08-09 Category:TEXT-INSPECTION & AUDIT & I&E CIRCULARS MONTHYEARIR 05000275/19990121999-09-13013 September 1999
[Table view]Insp Repts 50-275/99-12 & 50-323/99-12 on 990711-0821. Noncited Violations Noted.Major Areas Inspected:Aspects of Licensee Operations,Maint,Engineering & Plant Support IR 05000312/19990031999-08-31031 August 1999 Insp Rept 50-312/99-03 on 990802-06.No Violations Noted. Major Areas Inspected:Decommissioning & Dismantlement Activities,Including Organization,Mgt & Cost Controls IR 05000275/19990071999-07-27027 July 1999 Insp Repts 50-275/99-07 & 50-323/99-07 on 990503-0714. Apparent Violations Being Considered for Escalated Enforcement Action.Major Areas Inspected:Operations & Engineering 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 05000275/19980161998-11-16016 November 1998 Insp Repts 50-275/98-16 & 50-323/98-16 on 980913-1024.No Violations Noted.Major Areas Inspected:Operations,Maint, Engineering & Plant Support 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 IR 05000275/19980111998-07-22022 July 1998 Insp Repts 50-275/98-11 & 50-323/98-11 on 980526-28.No Violations Noted.Major Areas Inspected:Circumstances, Potential Safety Consequences & Licensee Response & Actions Taken Re Authorization of Tagout W/O Written Procedure 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 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 05000275/19980081998-04-17017 April 1998 Insp Repts 50-275/98-08 & 50-323/98-05 on 980202-06,23-27 & 0302-18.No Violations Noted.Major Areas Inspected: Engineering 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 IR 05000275/19980031998-01-23023 January 1998 Insp Repts 50-275/98-03 & 50-323/98-03 on 980105-09.No Violations Noted.Major Areas Inspected:Implementation of Solid Radioactive Waste Mgt & Radioactive Matls Transportation 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 05000275/19940271994-12-21021 December 1994 Insp Repts 50-275/94-27 & 50-323/94-27 on 941016-1126. Violations Noted.Major Areas Inspected:Operational Safety Verification,Plant Maint,Surveillance Observation,Plant Support Activities & in-office Review of LERs 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 PNO-V-93-013, on 930809,during pre-announced anti-nuclear demonstration,13 Protestors Illegally Entered Plant Access Gate & Immediately Taken Into Custody by Sheriff Deputies. Demonstration Related to CP Recapture Hearings for Plant1993-08-0909 August 1993 PNO-V-93-013:on 930809,during pre-announced anti-nuclear demonstration,13 Protestors Illegally Entered Plant Access Gate & Immediately Taken Into Custody by Sheriff Deputies. Demonstration Related to CP Recapture Hearings for Plant 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 PNO-V-92-033, on 921019,US Geological Survey Notified California Governor Ofc of Significant Likelihood That Earthquake of Magnitude 6 Will Occur on San Andreas Fault Near Parkfield1992-10-20020 October 1992 PNO-V-92-033:on 921019,US Geological Survey Notified California Governor Ofc of Significant Likelihood That Earthquake of Magnitude 6 Will Occur on San Andreas Fault Near Parkfield PNO-V-91-003, on 910307,unit 1 Shutdown for Refueling Operations & Loss of Offsite Power.Licensee Personnel Manually Moved New Module,Still in Mast,Away from Reactor Vessel & Core1991-03-0707 March 1991 PNO-V-91-003:on 910307,unit 1 Shutdown for Refueling Operations & Loss of Offsite Power.Licensee Personnel Manually Moved New Module,Still in Mast,Away from Reactor Vessel & Core 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 05000275/19900171990-10-22022 October 1990 Partially Withheld Safeguards Insp Repts 50-275/90-17 & 50-323/90-17 on 900924-1008.Noncited Violations Noted.Major Areas Inspected:Physical Security Program 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 PNO-V-90-033, on 900726,observed Crack in Charging Pump Suction Header Piping Caused by Boric Acid Crystals on Elbow of Pump.Licensee Considers Piping Operable & to Be Repaired W/O Plant Shut Down.Inspector Monitoring Plant1990-07-27027 July 1990 PNO-V-90-033:on 900726,observed Crack in Charging Pump Suction Header Piping Caused by Boric Acid Crystals on Elbow of Pump.Licensee Considers Piping Operable & to Be Repaired W/O Plant Shut Down.Inspector Monitoring Plant ML20055J2001990-07-13013 July 1990 Notice of Violation from Insp on 900422-0609.Violations Noted:Work Order Which Provided Instructions for Replacement of Plant Turbine Driven Auxiliary Feedwater Pump Speed Governor Not Appropriate to Circumstances PNO-II-89-066, licensees Prepared for Adverse Weather Conditions Due to Hurricane.Briefings Held W/Key Managers on Responsibilities to Check All Trailers,Secure Crane Hooks & Increase Emergency Food Supplies1989-09-21021 September 1989 PNO-II-89-066:licensees Prepared for Adverse Weather Conditions Due to Hurricane.Briefings Held W/Key Managers on Responsibilities to Check All Trailers,Secure Crane Hooks & Increase Emergency Food Supplies PNO-II-89-066A, updates Status of Hurricane Hugo for Nuclear Facilities in Southeast.Manning of Incident Response Ctr by Region II Continuing1989-09-21021 September 1989 PNO-II-89-066A:updates Status of Hurricane Hugo for Nuclear Facilities in Southeast.Manning of Incident Response Ctr by Region II Continuing 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 ML20247N0071989-09-11011 September 1989 PNS-I-89-015:revised Notification of Telephone Threat, Correcting Event Date from 890909 to 890911.Call, Originating from Limerick or Peach Bottom,Received at Corporate Ofc.On 890525,threat Received at Peach Bottom 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 ML20246C4001989-08-15015 August 1989 Partially Deleted Insp Repts 50-272/89-19,50-311/89-17 & 50-354/89-15 on 890710-14 (Ref 10CFR73.21).Major Areas Inspected:Followup on Actions Taken in Response to Regulatory Effectiveness Review on 890410-14 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 ML20246Q0301989-08-10010 August 1989 Insp Repts 50-029/89-14 & 50-271/89-10 on 890717-21.No Violations or Deviations Noted.Major Areas Inspected: Corporate Engineering & Offsite Support for Plants & Implementation of Mods PNO-V-89-047, on 890808,earthquake & Aftershock of 5.1 & 4.2 Magnitudes,Respectively,Occurred Approx 15 Miles Southwest of San Jose,Ca.Reactors Shutdown During Earthquake.Tour of GE Reactor Disclosed No Damage1989-08-0808 August 1989 PNO-V-89-047:on 890808,earthquake & Aftershock of 5.1 & 4.2 Magnitudes,Respectively,Occurred Approx 15 Miles Southwest of San Jose,Ca.Reactors Shutdown During Earthquake.Tour of GE Reactor Disclosed No Damage ML20245E9661989-07-31031 July 1989 Partially Withheld Insp Repts 50-275/89-20 & 50-323/89-20 on 890710-18 (Ref 10CFR2.790(d) & 73.21).No Violations Noted.Noncited Violation Noted Re Compensatory Measures. Major Areas Inspected:Physical Security Program 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-IV-89-045, on 890703,earthquake Near Tremonton,Ut Occurred.Earthquake Safety Interlocks Did Not Trip & No Damage Occurred1989-07-0505 July 1989 PNO-IV-89-045:on 890703,earthquake Near Tremonton,Ut Occurred.Earthquake Safety Interlocks Did Not Trip & No Damage Occurred 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 1999-09-13 |
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PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-V-86-46 Date 07/21/86 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information presented is as initially received without verification er evaluation and is basically all that is known by Region V staff on this date.
FACILITY: PACIFIC CAS & ELECTRIC COMPANY Emergency Classification DIABLO CANYON UNITS 1 & 2 Notification of Unusual Event DOCKET NOS. 50-275/323 Alert Site Area Emergency SACRAMENTO MUNICIPAL UTILITY DISTRICT General Emergency RANCHO SECO XX Not Applicable DOCKET NO. 50-312
SUBJECT:
SEISMIC EVENTS IN MAMMOTH LAKES AREA As a part of a series of seismic events that began 7/20/86, two seismic events occurred on 7/21/86 in the Mammoth lakes area. The location was east of Lake Crowley and about 15 miles northwest of Bishop, California (37.5' N and ll8.4'W). The largest event occurred at 0508 PDT on 7/21/86 and measured 6.2; the second occurred at 0744 PDT measuring 4.4 magnitude. The location was greater than 50 miles from any nuclear power plant.
The first event was not felt at Diablo Canyon; however, the second, smaller event did trigger the very sensitive nontechnical specification Terater, recording instrumentation.
The technical specification required recorders did not trigger. The licensee is analyzing
'the data.
Naither event was felt in the Rancho Seco Control Room and recording instrumentation did not trigger.
Diablo Canyon Unit 1 is currently at 72% power and Unit 2 is at 100%. Rancho Seco is in cold shutdown.
This information is current as of 1000 PDT, July 21, 1986.
CONTACT: M. Mendonca, RV L. Miller, Jr.
FTS 463-3720 FTS 463-8369 DISTRIBUTION H-St. /I 2 7 MNBB /NPhillips lW E/W /'2fWillste/ % Air Rights / 2cf Mail:
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