PNO-I-86-014, on 860208,squib Valve a Failed to Open When Sys Actuated.Caused by Firing Circuit Being Miswired. Wiring Error Alo Exists in Squib B.Reactor Currently Defueled as Part of Extended Outage for Piping Replacement
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| ML20151Z251 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee  |
| Issue date: | 02/10/1986 |
| From: | Meyer G, Raymond W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| References | |
| PNO-I-86-014, PNO-I-86-14, NUDOCS 8602140112 | |
| Download: ML20151Z251 (1) | |
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Category:PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO
MONTHYEARPNO-I-98-048, on 981016,Vermont Yankee Commenced Normal Plant Shutdown,Due to Increasing Steam Leakage from Instrumentation Line on Main Steam High Pressure Drain Sys in Steam Tunnel.Outage Expected to Last Several Days1998-10-16016 October 1998
[Table view]PNO-I-98-048:on 981016,Vermont Yankee Commenced Normal Plant Shutdown,Due to Increasing Steam Leakage from Instrumentation Line on Main Steam High Pressure Drain Sys in Steam Tunnel.Outage Expected to Last Several Days PNO-I-98-021, on 980609,automatic Reactor Scram Occurred. Except for Single Control Rod Position Indication Problem, Initial Plant Response to Scram Expected.Licensee Initiated Investigation to Understand Causes of Event Complications1998-06-0909 June 1998 PNO-I-98-021:on 980609,automatic Reactor Scram Occurred. Except for Single Control Rod Position Indication Problem, Initial Plant Response to Scram Expected.Licensee Initiated Investigation to Understand Causes of Event Complications PNO-I-97-053, on 970826,special Security Insp Will Be Performed,That Will Examine Security Activities at Vermont Yankee,Pilgrim & Indian Point 3.Team Will Include Security Specialists from Region I & NRR1997-08-22022 August 1997 PNO-I-97-053:on 970826,special Security Insp Will Be Performed,That Will Examine Security Activities at Vermont Yankee,Pilgrim & Indian Point 3.Team Will Include Security Specialists from Region I & NRR PNO-I-93-051A, on 930924,licensee Resumed Fuel Handling Operations Following Listed Events on 930903 & 09 Due to Human Error.Revs Made to Fuel Handling Procedures & Training of All Staff Involved in Fuel Handling Conducted1993-09-24024 September 1993 PNO-I-93-051A:on 930924,licensee Resumed Fuel Handling Operations Following Listed Events on 930903 & 09 Due to Human Error.Revs Made to Fuel Handling Procedures & Training of All Staff Involved in Fuel Handling Conducted ML20057A7981993-09-0909 September 1993 PNO-1-93-051:on 930909,fuel Assembly Lowered & Impacted on Blade Guide Inserted at Middle of Reactor Core.Caused by Operator Error.Fuel Lifted & Transported to Sipping Area of Fuel Pool.Area States Notified PNO-I-93-049, on 930903,fuel Assembly Dropped Vertical Distance of Approx 50-80 Inches Causing grapple-closed Indication on Refueling Bridge to Illuminate.No Radiation Alarms Received.Licensee Conducting Investigation of Event1993-09-0303 September 1993 PNO-I-93-049:on 930903,fuel Assembly Dropped Vertical Distance of Approx 50-80 Inches Causing grapple-closed Indication on Refueling Bridge to Illuminate.No Radiation Alarms Received.Licensee Conducting Investigation of Event PNO-I-91-018, on 910225,requalification Exam Administered During Wk of 910225 Indicated That Requalification Program at Facility Unsatisfactory1991-03-0606 March 1991 PNO-I-91-018:on 910225,requalification Exam Administered During Wk of 910225 Indicated That Requalification Program at Facility Unsatisfactory PNO-I-89-037, on 890517,determined That Eight Person Crew Socks Contaminated to 200 Counts Per Minute Over Background. Caused by Working on Refueling Floor.Licensee Surveyed Temporary Residences of Crew Members1989-05-23023 May 1989 PNO-I-89-037:on 890517,determined That Eight Person Crew Socks Contaminated to 200 Counts Per Minute Over Background. Caused by Working on Refueling Floor.Licensee Surveyed Temporary Residences of Crew Members PNO-I-89-021, 890310,unusual Event Declared Due to Loss of Reactor Water Level Beginning on 890309.Caused When RHR Loop Pump Suction Valve a Stroked Open for Maint Testing.Level Returned to Normal Using CRD Sys Pump1989-03-10010 March 1989 PNO-I-89-021:890310,unusual Event Declared Due to Loss of Reactor Water Level Beginning on 890309.Caused When RHR Loop Pump Suction Valve a Stroked Open for Maint Testing.Level Returned to Normal Using CRD Sys Pump PNO-I-88-102, on 880928,two Technicians Observed Attempting to Gain Entry Into Posted High Radiation Area Through Locked Door W/O Use of Key.Exams of Doors Identified 14 Indications of Past Attempts.Doors Modified & Util Task Force Formed1988-10-0707 October 1988 PNO-I-88-102:on 880928,two Technicians Observed Attempting to Gain Entry Into Posted High Radiation Area Through Locked Door W/O Use of Key.Exams of Doors Identified 14 Indications of Past Attempts.Doors Modified & Util Task Force Formed PNO-I-88-064A, on 880617,util Union Employees Voted to Ratify Amended Labor Contract.Union Employees Voted to Reject 880616 Proposal Not Implemented & Normal Plant Operations Not Impacted1988-06-20020 June 1988 PNO-I-88-064A :on 880617,util Union Employees Voted to Ratify Amended Labor Contract.Union Employees Voted to Reject 880616 Proposal Not Implemented & Normal Plant Operations Not Impacted PNO-I-88-064, on 880616,util Union Employees Voted to Reject Proposed Labor Contract.Licensee Established Contigency Strike Plans to Ensure That Min Tech Spec,Emergency Plan & Administrative Procedures Staffing Levels Maintained1988-06-17017 June 1988 PNO-I-88-064:on 880616,util Union Employees Voted to Reject Proposed Labor Contract.Licensee Established Contigency Strike Plans to Ensure That Min Tech Spec,Emergency Plan & Administrative Procedures Staffing Levels Maintained PNO-I-88-061, on 880606,sewage Dumped on Whitaker Farm by Vynp Station & Contracted Hauler A-1 Sanitary.Agreement Made W/Contractor & Owners of Farm to Aid in Fertilization.In Jan 1986 Vynp Station Sewage Taken to Brattleboro,Vt1988-06-0707 June 1988 PNO-I-88-061:on 880606,sewage Dumped on Whitaker Farm by Vynp Station & Contracted Hauler A-1 Sanitary.Agreement Made W/Contractor & Owners of Farm to Aid in Fertilization.In Jan 1986 Vynp Station Sewage Taken to Brattleboro,Vt PNO-I-88-039, on 880329,uninterruptable Power Supply (UPS) B Declared Out of Svc Due to Blown Fuse & Failed Circuit Cards.On 880331,valve CS-11B Declared Inoperable & Reactor Shutdown Initiated.Repairs & post-maint of UPS B Completed1988-04-0101 April 1988 PNO-I-88-039:on 880329,uninterruptable Power Supply (UPS) B Declared Out of Svc Due to Blown Fuse & Failed Circuit Cards.On 880331,valve CS-11B Declared Inoperable & Reactor Shutdown Initiated.Repairs & post-maint of UPS B Completed PNO-I-87-116, on 871215,motor-operated Outboard Drywell Spray Discharge Isolation Valve RHR-26A Failed to Stoke & Valve Overload Alarm Received & Valve Breader Tripped.Standby Diesel Generator B Being Restored1987-12-15015 December 1987 PNO-I-87-116:on 871215,motor-operated Outboard Drywell Spray Discharge Isolation Valve RHR-26A Failed to Stoke & Valve Overload Alarm Received & Valve Breader Tripped.Standby Diesel Generator B Being Restored PNO-I-86-085, on 861021,train Collided W/Propane Tank Truck Outside Site,Resulting in Minor Propane Leak.Plant Fire Brigade Commander Dispatched to Site.No Addl Action by Licensee Necessary1986-10-21021 October 1986 PNO-I-86-085:on 861021,train Collided W/Propane Tank Truck Outside Site,Resulting in Minor Propane Leak.Plant Fire Brigade Commander Dispatched to Site.No Addl Action by Licensee Necessary PNO-I-86-014, on 860208,squib Valve a Failed to Open When Sys Actuated.Caused by Firing Circuit Being Miswired. Wiring Error Alo Exists in Squib B.Reactor Currently Defueled as Part of Extended Outage for Piping Replacement1986-02-10010 February 1986 PNO-I-86-014:on 860208,squib Valve a Failed to Open When Sys Actuated.Caused by Firing Circuit Being Miswired. Wiring Error Alo Exists in Squib B.Reactor Currently Defueled as Part of Extended Outage for Piping Replacement PNO-I-86-002, on 860109,fire Protection Deluge Sys for Auxiliary Transformer Manually Actuated by Unknown Person at Local Fire Box.Caused by Intentional Act of Tampering or Harassment.Addl Security Patrols Instituted1986-01-14014 January 1986 PNO-I-86-002:on 860109,fire Protection Deluge Sys for Auxiliary Transformer Manually Actuated by Unknown Person at Local Fire Box.Caused by Intentional Act of Tampering or Harassment.Addl Security Patrols Instituted PNO-I-85-071A, on 850927,Hurricane Gloria Located at Northampton,Ma Moving in Northeasterly Direction.Status Downgrade to Tropical Storm Expected Early Evening on 850927.Salem Unit 1 & Millstone Complex Suffered Damage1985-09-27027 September 1985 PNO-I-85-071A:on 850927,Hurricane Gloria Located at Northampton,Ma Moving in Northeasterly Direction.Status Downgrade to Tropical Storm Expected Early Evening on 850927.Salem Unit 1 & Millstone Complex Suffered Damage PNO-I-85-056, on 850808,technician Experienced Radiation Exposure by Entering Traversing in-core Probe (TIP) Room. Technician Received 1.29 Rem Dose.Caused by TIP Probe Attaching Cable That Was Recently Stuck in-core1985-08-0909 August 1985 PNO-I-85-056:on 850808,technician Experienced Radiation Exposure by Entering Traversing in-core Probe (TIP) Room. Technician Received 1.29 Rem Dose.Caused by TIP Probe Attaching Cable That Was Recently Stuck in-core PNO-I-85-049, on 850712,seven Man Picket Line Was Set Up at Plant Main Entrance to Protest Use of non-union Contractor Employed at Site on 850708.Plant Security Declared Security Alert.Local Police Providing Support for Traffic Control1985-07-12012 July 1985 PNO-I-85-049:on 850712,seven Man Picket Line Was Set Up at Plant Main Entrance to Protest Use of non-union Contractor Employed at Site on 850708.Plant Security Declared Security Alert.Local Police Providing Support for Traffic Control ML20216K1171978-07-0303 July 1978 PNO-780628:on 780628,five non-penetrating Surface Crack Indications & One 9-inch Long Surface Crack Were Identified on Torus in Heat Affected Zone of Welding Which Was Being Performed as Part of Mod ML20248L2361978-03-23023 March 1978 PNO-78-058,on 780323,disk on Isolated & Unused Original off-gas Delay Line Ruptured.During Shutdown,Isolation Valves on Unused Line Will Be Removed & Line Will Be Blanked.No Airborne Radioactivity Release Resulted from Event ML20249A1251978-01-0606 January 1978 PNO-78-003:on 780106,licensee Unsuccessfully Attempted to Repair Steam Leak on Main Turbine Moisture Separator Drain Line While Plant Operating at Full Power.Licensee Reducing Plant Power to 15 Percent Power to Repair Steam Leak ML20207G4221977-11-0909 November 1977 PNO-77-198:on 771109,transportation Accident Involving Shipment of Radioactive Spent Resin Occurred.Representatives from Nc Radiation Protection & Highway Patrol Responded to Scene.No Damage to Radioactive Matl Container ML20249A9541977-10-11011 October 1977 PNS-77-039:on 771008,18 of 28 Demonstrators,Members of Alliance to Decommission Vermont Yankee, Were Arrested & Cited for Trespassing on Vermont Yankee Nuclear Power Plant Property.No Property Damage or Personnel Injuries Reported ML20249A8961977-09-23023 September 1977 PNS-77-034:licensee Reported That Splinter Group of Clamshell Alliance Plans to Hold Demonstration at Vygs on 771004.Alliance Representative Was Receptive to Suggestion to Meet W/Licensee at off-site Location ML20236F4271976-06-0404 June 1976 PNS-76-023:during Wk of 760603,organized Demonstration Was Held at Plant.Two anti-nuclear Movies Were Shown.Approx 100 anti-nuclear Personnel Attended Showing.State & FBI Were Informed of Activities ML20249B1501976-02-0909 February 1976 PNO-76-021:on 760209,Region I Informed That Nbc News Interviewed Corporate President & Took News Films Relative to Torus Problem for Use on J Chancellor News for February 9 or 10.Media Interest Expected Because of Torus Problem ML20249B0311976-01-27027 January 1976 PNO-76-016:on 760126,Vermont Yankee Shutting Down Based on Results of Preliminary Engineering Evaluations of Torus Support Sys.Unit Will Be in Cold Shutdown Condition on 760127.Duration of Shutdown,Unknown ML20236V3621975-08-27027 August 1975 PN-75-076:on 750827,leakage Noted from Recirculation Loop Riser 1 Inch Instrument During Drywell Insp.Licensee Will Perform Metallurgical Exam to Characterize Failure Mode. Reactor in Cold Shutdown.Inspectors on Site ML20236U4131975-08-0606 August 1975 PN-75-065:on 750806,group of anti-nuclear Demonstrators Expected to Arrive at Vynp & Demonstrate at Front Gate. Vermont Yankee Front Gate Reportedly Being Shut & Extra Plant Guards Have Been Stationed ML20236U2141975-06-0404 June 1975 PN-75-032:on 750604,IE Was Informed That Due to Failure of Unit Start Up Transformer,Plant Was Performing Orderly Shutdown & Would Remain Shutdown Until Startup Transformer Which Failed,Could Be Functionally Replaced ML20236U3111975-05-14014 May 1975 PN-75-024:on 750514,local 2349 Struck Licensee Facility. Special Procedures in Effect to Adequately Staff Facility for Continued Plant Operations.Media Interest Expected ML20236U6721975-05-0909 May 1975 PN-75-019:on 750508,local 2349 Voted to Strike Facility. Threat Deferred by Agreement to Meet W/Federal Mediator on 750512.Media Interest Expected 1998-06-09 Category:TEXT-INSPECTION & AUDIT & I&E CIRCULARS MONTHYEARIR 05000271/19990111999-10-0707 October 1999
[Table view]Insp Rept 50-271/99-11 on 990809-27.No Violations Noted. Major Areas Inspected:Maint & Engineering IR 05000271/19990061999-09-13013 September 1999 Insp Rept 50-271/99-06 on 990621-0801.Noncited Violation Noted.Major Areas Inspected:Operations,Maint,Engineering & Plant Support ML20211H0891999-08-19019 August 1999 Notice of Violation from Insp on 990628-0811.Violation Noted:Periodic Assessment Conducted for Period of November 1996 Through May 1998 Did Not Adequately Evaluate Maint Activities as Listed IR 05000271/19990121999-08-19019 August 1999 Insp Rept 50-271/99-12 on 990628-0811.Violation Noted.Major Areas Inspected:Maint Rule Periodic Evaluation Required by 10CFR50.65(a)(3) IR 05000271/19990051999-07-26026 July 1999 Insp Rept 50-271/99-05 on 990510-0620.Noncited Violations Identified.Major Areas Inspected:Aspects of Licensee Operations,Engineering,Maint & Plant Support IR 05000271/19990031999-06-14014 June 1999 Insp Rept 50-271/99-03 on 990329-0509.Non-cited Violations Noted.Major Areas Inspected:Operations,Engineering, Maintenance,Plant Support & Review of Maint Rule Program Implementation IR 05000271/19990041999-06-0404 June 1999 Insp Rept 50-271/99-04 on 990426-28.No Violations Noted. Major Areas Inspected:Performance of Emergency Response Organization IR 05000271/19993021999-05-28028 May 1999 NRC Operator Licensing Exam Rept 50-271/99-302(including Completed & Graded Tests) for Tests Administered on 990510-11 IR 05000271/19990021999-05-0606 May 1999 Insp Rept 50-271/99-02 on 990215-0328.Non-cited Violations Noted.Major Areas Inspected:Operations,Engineering, Maintenance & Plant Support IR 05000271/19990011999-03-16016 March 1999 Insp Rept 50-271/99-01 on 990104-0214.No Violations Noted. Major Areas Inspected:Operations,Engineering,Maint & Plant Support Re Security Procedures ML20202G2781999-01-28028 January 1999 Insp Rept 50-271/98-14 on 981122-990104.No Violations Noted. Major Areas Inspected:Operations,Maint & Engineering IR 05000271/19980131998-12-23023 December 1998 Insp Rept 50-271/98-13 on 981011-1121.No Violations Noted. Major Areas Inspected:Operations,Engineering,Maint & Plant Support IR 05000271/19980121998-11-10010 November 1998 Insp Rept 50-271/98-12 on 980830-1010.No Violations Noted. Major Areas Inspected:Licensee Operations,Engineering,Maint & Plant Support PNO-I-98-048, on 981016,Vermont Yankee Commenced Normal Plant Shutdown,Due to Increasing Steam Leakage from Instrumentation Line on Main Steam High Pressure Drain Sys in Steam Tunnel.Outage Expected to Last Several Days1998-10-16016 October 1998 PNO-I-98-048:on 981016,Vermont Yankee Commenced Normal Plant Shutdown,Due to Increasing Steam Leakage from Instrumentation Line on Main Steam High Pressure Drain Sys in Steam Tunnel.Outage Expected to Last Several Days IR 05000271/19980111998-09-30030 September 1998 Insp Rept 50-271/98-11 on 980719-0829.No Violations Noted. Major Areas Inspected:Operations,Maint,Engineering & Plant Support IR 05000271/19980991998-08-28028 August 1998 SALP Rept 50-271/98-99 for Vermont Yankee Nuclear Power Station for Period of 970119-980718 IR 05000271/19980101998-08-14014 August 1998 Insp Rept 50-271/98-10 on 980614-0718.No Violations Noted. Major Areas Inspected:Operations,Maintenance,Engineering & Plant Support IR 05000271/19980801998-07-24024 July 1998 Corrected Page 23 for Insp Rept 50-271/98-80 Issued on 980716.Section E8.2 Was Amended in Order to Be More Consistent W/Findings Documented in Other Sections of Rept & to More Clearly Reflect NRC Conclusion Re LER 98-005 ML20236Q8801998-07-16016 July 1998 Notice of Violation from Insp on 980518-0605.Violation Noted:In 1996,SE Performed by Licensee to Support Temporary Mod to MCR HVAC Sys,Did Not Provide Sufficient Basis to Determine That Change Did Not Involve USQ ML20236Q8831998-07-16016 July 1998 Insp Rept 50-271/98-80 on 980518-0605.Violations Noted.Major Areas Inspected:Aspects of Licensee Engineering & Technical Support Operations as They Pertain to C/A Program,Se & Core Engineering Programs & Processes IR 05000271/19980091998-07-10010 July 1998 Insp Rept 50-271/98-09 on 980609-19.Violations Noted.Major Areas Inspected:Personnel Actions & Equipment Response Associated w/980609 Event,In Which There Was Rv High Level Water Level Turbine Trip & Reactor Scram ML20236P9751998-07-10010 July 1998 Notice of Violation from Insp on 980610-0619.Violations Noted:As of 980609,Procedure Ot,Reactor High Level,Rev 9, Did Not Direct or Alert Operators to Place RFW Pump Breaker Control Switches in Pull to Lock to Prevent Start IR 05000271/19980061998-07-0202 July 1998 Insp Rept 50-271/98-06 on 980407-0521.Violations Noted.Major Areas Inspected:Aspects of Licensee Engineering & Technical Support Operations Pertaining to Basis for Maint Operations Process ML20236M2321998-07-0202 July 1998 Notice of Violation from Insp on 980407-0521.Violation Noted:On 970320,licensee Identified That EOPs Directed Operators to Flood Containment to Top of Active Fuel ML20236L3371998-07-0101 July 1998 Notice of Violation from Insp on 980503-0613.Violation Noted:In March 1992,Standby Gas Treatment Sys Fans & Associated Electrical Circuit Breakers Replaced & Not Adequately Translated Into Procedures IR 05000271/19980081998-07-0101 July 1998 Insp Rept 50-271/98-08 on 980503-0613.Violations Noted.Major Areas Inspected:Aspects of Licensee Operations,Engineering, Maint,Plant Support,Insps by Regional Radiation Protection, Emergency Preparedness & Fire Protection Specialists PNO-I-98-021, on 980609,automatic Reactor Scram Occurred. Except for Single Control Rod Position Indication Problem, Initial Plant Response to Scram Expected.Licensee Initiated Investigation to Understand Causes of Event Complications1998-06-0909 June 1998 PNO-I-98-021:on 980609,automatic Reactor Scram Occurred. Except for Single Control Rod Position Indication Problem, Initial Plant Response to Scram Expected.Licensee Initiated Investigation to Understand Causes of Event Complications ML20249A1191998-06-0404 June 1998 Notice of Violation from Insp on 980315-0502.Violation Noted:Entrance Pathway to Reactor Bldg Vital Area Was Identified That Was Neither Locked Nor Guarded IR 05000271/19980041998-06-0404 June 1998 Insp Rept 50-271/98-04 on 980315-0502.Violations Noted. Major Areas Inspected:Operations,Maint,Engineering & Plant Support Re Unmonitored Access Into Reactor Bldg Vital Area ML20217B3781998-04-14014 April 1998 Notice of Violation & Proposed Imposition of Civil Penalty in Amount of $55,000.Violation Noted:In 1982,licensee Failed to Control Design Interfaces & Failed to Assure That Design Basis for Max Torus Temp Normal Limit,Correctly Translated ML20216F8661998-04-13013 April 1998 Notice of Violation from Insp on 980316-19.Violation Noted: on 980317 During Performance Testing of Protected Area Intrusion Detection Sys,Number of Climbing Attempts,In Multiple Locations,Not Detected That No Alarm Was Generated ML20216F9081998-04-13013 April 1998 Insp Rept 50-271/98-05 on 980316-19.Violations Noted.Major Areas Inspected:Selective Exam of Procedures & Representative Records,Interviews W/Personnel,Performance Tests of Security Equipment & Observations by Inspectors IR 05000271/19980011998-04-13013 April 1998 Insp Rept 50-271/98-01 on 980125-0314.No Violations Noted. Major Areas Inspected:Operations,Engineering,Maint & Plant Support ML20247M2441998-04-0909 April 1998 EN-98-021:on 980414,notice of Proposed Imposition of Civil Penalty in Amount of $55,000 Issued to Licensee.Action Based on Problem Involving TS Limit for Max Torus Operating Temp Being Inconsistent W/Plant Design Basis IR 05000271/19970121998-03-0303 March 1998 Insp Rept 50-271/97-12 on 971207-980124.Violations Noted. Major Areas Inspected:Operations,Maint,Engineering & Plant Support ML20216A9921998-03-0303 March 1998 Notice of Violation from Insp on 971207-980224.Violation Noted:Hpci Room App a Fire Barrier Was Found to Be Inoperable on 970113 & Door Would Not Close IR 05000271/19980021998-02-20020 February 1998 NRC Operator Licensing Exam Rept 50-271/98-02OL on 980210. Exam Results:Applicant Passed Simulator Retake Exam & Issued SRO License ML20202D3361998-02-0505 February 1998 Notice of Violation from Insp on 970929-1120.Violation Noted:Prior to 950420,licensee Failed to Assure That Test Instruments Used in RHR Heat Exchanger Performance Testing Were Adequate to Assure Test Requirements Were Satisfied ML20202D3431998-02-0505 February 1998 Insp Rept 50-271/97-10 on 970929-1120.Violations Noted.Major Areas Inspected:Engineering & Technical Support Operations IR 05000271/19970111997-12-23023 December 1997 Insp Rept 50-271/97-11 on 971031-1206.Violations Noted. Major Areas Inspected:Operations,Engineering,Maintenance & Plant Support IR 07100031/20120061997-12-23023 December 1997 Notice of Violation from Insp on 971031-1206.Violation Noted:Plant Auxiliary Operators Implemented Unapproved Vermont Electric Power Co Switching Order on 971125 to Open 345 Kv Scobie Line 379-3 ML20202E7091997-11-28028 November 1997 Insp Rept 50-271/97-08 on 970907-1031.No Violations Noted. Major Areas Inspected:Operations,Maint,Engineering & Plant Support ML20199J4021997-11-22022 November 1997 NRC Operator Licensing Exam Rept 50-271/97-09 for Tests Administered on 970902-04.Two of Four Applicants Passed.One SRO Upgrade Applicant Failed Written & Operating Portion of Exam & One SRO Failed Operating Portion of Exam IR 05000271/19970801997-10-16016 October 1997 Insp Rept 50-271/97-80 on 970728-0822.No Violations Noted But Exercise of Discretion Was Issued to Ack Effort to Correct Violation.Major Areas Inspected:Review of Fire Protection & Engineering ML20217E7011997-10-0101 October 1997 Notice of Violation from Insp on 970720-0906.Violation Noted:Vermont Yankee Staff Failed to Correct Condition Adverse to Quality Involving Standby Gas Treatment Sys over-pressure Vulnerability IR 05000271/19970061997-10-0101 October 1997 Insp Rept 50-271/97-06 on 970720-0906.No Violations Noted. Major Areas Inspected:Licensee Operations,Engineering, Maintenance,& Plant Support IR 05000271/19970071997-09-0404 September 1997 Insp Rept 50-271/97-07 on 970826.No Violations Noted.Major Areas Inspected:Licensee Access Authorization Program ML20210R0151997-08-27027 August 1997 Design Insp Rept 50-271/97-201 on 970505-0613.No Violations Noted.Major Areas Inspected:Lpci & RHRSW Sys PNO-I-97-053, on 970826,special Security Insp Will Be Performed,That Will Examine Security Activities at Vermont Yankee,Pilgrim & Indian Point 3.Team Will Include Security Specialists from Region I & NRR1997-08-22022 August 1997 PNO-I-97-053:on 970826,special Security Insp Will Be Performed,That Will Examine Security Activities at Vermont Yankee,Pilgrim & Indian Point 3.Team Will Include Security Specialists from Region I & NRR ML20210S0171997-08-19019 August 1997 Notice of Violation from Insp on 970601-0719.Violation Noted:Reactor Was Placed in Run Mode on 970507,but Atmosphere Oxygen Concentration in Torus Air Space Remained Greater than Four Percent Until Morning of 970512 1999-09-13 |
_
DCS No: 5027102-Date: _ February 10, 1986 PRELIMINARY NOTIFICATION _OF EVENT OR. UNUSUAL OCCURRENCE--PNO-I-86-14 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety:
.cr public _ interest. significance. .The information-is as initially received without-v rification or evaluation, and is basically all that is known by'the Region I
. staff on this date.
v Facility: . Vermont Yankee Nuclear Licensee Emergency Classification:
Vermont Yankee Notification of Unasual Event
. Vernon , -. Vermont - Alert-Docket No.-50-271 Site Area Emergency General Emergency
_ X_ Not, Applicable
Subject:
INOPERABLE SLC-SYSTEM DUE TO MISWIRING During the refueling surveillance test of'the Standby Liquid Control (SLC) System on
' February 8,'1986, the A squib valve failed to open (fire) when the system was actuated.
) Subsequent. licensee evaluation determined _that-the firing circuit was miswired. The wiring error appears to. exist in-the B squib valve circuit also, although-this valve
'has not been tested yet. With both valves'being unable to be opened, the SLC System is inoperable.
The reactor is currently'defueled, as part of an extended outage for piping replacement b: gun in September, 1985, and the SLC System is not required to be operable. However, tha last successful testing of the valves occurred in July,1984, .during the last
-refueling outage. The licensee has not determined when the miswiring error occurred,.
and initial evaluations have not found any maintenance or modification work which would have caused the error. The wiring' error existed in the local terminal box and was not Edeterminable via the continuity test light in the control room, which is routinely monitored by the operators.
The State of Vermont has been notified.
~ CONTACT: W. Raymond G. Meyer 802-257-4319 488-1121
. DISTRIBUTION:
H. St. MNBB Phillips E/W Willste Mail: ADM:CMB Chairman Palladino EDO~ NRR IE NMSS 00T:Trans only Comm.'Zech PA OIA RES Comm. Bernthal ELD AE00 Comm. Roberts Comm. Asselstine ACRS Air Rights INPO----
SECY SP NSAC----
CA POR' Regional Offices TMI Resident Section RI Resident Office Licensee:
('eactor R Licensees) 8602140112 B60210 RIgion I Form 83 PDR 18rE
-(Rav.' July,1984) PNO-I-86--014 PDR
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