FirstEnergy Nuclear Generation Corp. ("FENGenCo"), an indirect, wholly-owned subsidiary of FirstEnergy Corp., an Ohio corporation, has 87.42 % of the undivided ownership of the Perry Nuclear Power Plant [Ref: Jun 24, 2011 letter, ML111751678]
FirstEnergy stock today
NRC has a
performance indicator and inspection finding matrix webpage for Perry.
June 30, 2007
New this week from NRC Public Document Room
* [2007-06-30] Application for Renewal of Quality Assurance Program for Radioactive Material Packages ML052210416 2005-07-29 1 07100541 PY-CEI/NMSS-0036L 2005-07-29 2007-06-29 FENOC Perry Nuclear Power Plant 10 Center Road FirstEnergy Nuclear Operating Company Pery Ohio 44081 440-280f5579 Richard Anderson Fax 440-280-8029 Vice President-Nuclear July 29, 2005 PY-CEI/NMSS-0036L Atte
* [2007-06-28] Perry - Notification of Deviation from BWRVIP-75-A Guidance and Commitment Change Related to Generic Letter 88-01 Inspection Frequency ML071700083 2007-06-08 2 05000440 NPF-058 BWRVIP-75-A GL-88-001 PY-CEI/NRR-3042L 2007-06-08 2007-06-27 FENOC Perry Nuclear Power Station 10 Center Road FirstEnergy Nuclear Operating Company Perry, Ohio 44081 Barry S. Allen 440-280-5382 Vice President Fax: 440-280-8029 June 8, 2007
* [2007-06-28] Perry - NPDES Monthly Report Forms for the Month of May 2007 ML071700108 2007-06-12 10 05000440 PY-CEI/OEPA-0472L 2007-06-12 2007-06-27 FENOC FirstEnergy Nuclear Operating Company Perry Nuclear Power Station 10 Center Road Perry, Ohio 44081 Barry S. Allen Vice President 440-280-5382 Fax: 440-280-8029 June 12, 2007 PY-CEI/OEPA-0472L Ohio Envi
June 23, 2007
New this week from NRC Public Document Room
* [2007-06-23] Perry - Commitment for Hydrogen Igniter Backup Power Supply and CLosure Process for Generic Issue 189 ML071510594 2007-06-15 5 05000440 NPF-058 2007-06-15 2007-06-22 June 15, 2007 Mr. Barry S. Allen Site Vice President FirstEnergy Nuclear Operating Company Mail Stop A-PY-A290 P.O. Box 97, 10 Center Road Perry, OH 44081-0097 SUBJECT: PERRY NUCLEAR POWER PLANT, UNIT NO. 1 - COMMITME
* [2007-06-23] Beaver and Perry, License Amendment, Issuance of Amendments Re: Modification of Technical Specification Requirements for Inoperable Snubbers ML071300214 2007-06-22 ML071300203+ ML071720252+ FNWEBNAVIGATE=1.0 SYSTEMTYPE=MEZZANINE DOCUMENTID=071300214 STARTPAGE=1 LIBRARYNAME= ML_adams^hqntad01
* [2007-06-21] Ohio Environmental Protection Agency (OEPA) Electronic Data Submittal Memorandum of Agreement ML071630245 2007-06-04 2 05000440 3IB00016*GD PY-CEI/OEPA-0471L 2007-06-04 2007-06-20 FENOC Perry Nuclear Power Station 10 Center Road FirstEnergy Nuclear Operating Company Perry, Ohio 44081 Barry S. Allen 440-280-5382 Vice President Fax: 440-280-8029 June 4, 2007 PY-CEI/OEPA-0471
* [2007-06-19] Ltr 06/11/07 Perry Re: Initial Operator License Examination Re-Take Written Examination ML071650281 2007-06-11 5 05000440 NPF-058 2007-06-11 2007-06-18 June 11, 2007 Mr. L. William Pearce Site Vice President FirstEnergy Nuclear Operating Company Perry Nuclear Power Plant P. O. Box 97, 10 Center Road, A290 Perry, OH 44081-0097 SUBJECT: PERRY NUCLEAR POWER PLANT INITIA
June 9, 2007
New this week from NRC Public Document Room
* [2007-06-05] Perry, Unit 1 - Third Quarter 2006 - Update of Confirmatory Action Letter (CAL) Commitments ML071440447 2006-10-31 2 05000440 NPF-058 PY-CEI/OIE-0678L 2006-10-31 2007-06-04 FENOC FirstEnergy Nuclear Operating Company peC D r li, 1 //- -Fo9ee -Doorn b,- Perry Nuclear Power Station 10 Center Road Perry, Ohio 44081 L. William Pearce 440-280-5382 Vice President Fax. 440-280-
May 26, 2007
New this week from NRC Public Document Room
* [2007-05-25] Perry, Unit 1 - Response to NRC Generic Letter 2007-01, "Inaccessible or Underground Power Cable Failures That Disable Accident Mitigation Systems or Cause Plant Transients." ML071360069 2007-05-08 4 05000440 PY-CEI/NRR-3034L TAC MD4363 2007-05-08 2007-05-24 FENOC Perry Nuclear Power Station 10 Center Road FirstEnergy Nuclear Operating Company Perry, Ohio 44081 L. William Pearce 440-280-5382 Vice President Fax. 440-280-8029 May 8, 2007 PY-CEI/NRR-3034L
* [2007-05-25] Perry, Unit 1, NPDES Monthly Report Forms for April 2007 ML071360049 2007-05-02 10 05000440 PY-CEI/OEPA-0470L 2007-05-02 2007-05-24 FENOC Perry Nuclear Power Plant 10 Center Road Perry, Ohio 44081 L. W. Pearce Vice President, Nuclear 440-280-5382 May 2, 2007 PY-CEI/OEPA-0470L Ohio Environmental Protection Agency Division of Water Polluti
* [2007-05-25] Perry, Unit 1, Submittal of Core Operating Limits Report, Revision 15 ML071360092 2007-05-09 23 05000440 PY-CEI/NRR-3032L PDB-F0001, Rev 15 2007-05-09 2007-05-24 FENOC Perry Nuclear Power Station 10 Center Road FirstEnergy Nuclear Operating Company Perry, Ohio 44081 L. William Pearce 440-280-5382 Vice President Fax: 440-280-8029 May 9, 2007 PY-CEI/NR
* [2007-05-23] IR 05000440-07-404(DRS); 04/23/2007 - 04/27/2007; Perry Nuclear Power Plant; Routine Security Baseline Inspection - Cover Letter ML071380352 2007-05-15 5 05000440 NPF-058 IR-07-404 2007-05-15 2007-05-22 OFFICIAL USE ONLY - SECURITY-RELATED INFORMATION Enclosure Contains Sensitive Unclassified Non-Safeguards Information. Upon separation, this page is decontrolled. OFFICIAL USE ONLY - SECURITY-RELATED INFORMA
* [2007-05-22] Perry - Changes in Perry Senior Management ML071380384 2007-05-18 1 05000440 MR-3-2007-0008 2007-05-18 2007-05-21 Morning Report Date: MAY 18, 2007 PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION III Licensee/Facility: Notification: 3-2007-0008 05/18/2007 MR Number: FIRSTENERGY NUCLEAR OPERATING CO. [1] GE-6 Date: Perr
May 19, 2007
New this week from NRC Public Document Room
* [2007-05-19] Perry, Unit 1 - Administrative Change to Facility Operating License in Conjunction with Commission Order EA-06-037 and Revisions to Physical Security Plan, Training and Qualification Plan, and Safeguards Contingency Plan. ML071370067 2007-05-09 5 05000440 EA-06-037 tac MD2261 2007-05-09 2007-05-18 OFFI.IA. USE OL" -ECUR:,TY .ELATED .,,F ,,MATION l " IL RE(;U UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 May 9, 2007 Mr. L.W. Pearce Site Vice President FirstEnergy Nuclear
* [2007-05-17] Perry Nuclear Power Plant, Unit 1 - Issuance of Amendment RE: Revise Technical Specification 5.5.7, Ventilation Filter Test Program, To Correct Referenced Flow Units (TAC No. MD2181). ML070930433 2007-05-09 11 05000440 NPF-058 TAC MD2181 2007-05-09 2007-05-16 ML071220366+ May 9, 2007 Mr. L. W. Pearce Site Vice President FirstEnergy Nuclear Operating Company Mail Stop A-PY-A290 P.O. Box 97, 10 Center Road Perry, OH 44081 SUBJECT: PERRY NUCLEAR POWER PLANT, UNIT N
* [2007-05-17] Perry Nuclear Power Plant, Unit 1, Technical Specifications (TS), Revise TS 5.5.7, Ventilation Filter Test Program, To Correct Referenced Flow Units (TAC No. MD2181). ML071340392 2007-05-09 2 05000440 NPF-058 TAC MD2181 2007-05-09 2007-05-16 ML071220366+ Programs and Manuals 5.5 5.5 Programs and Manuals 5.5.7 Ventilation Filter Testing Program (VFTP) (continued) a. Demonstrate for each of the ESF systems that an inplace test of the high efficie
* [2007-05-17] Perry, Unit 1 - Annual Environmental and Effluent Release Report for 2006. ML071280391 2007-04-27 128 05000440 PY-CEI/NRR-3040L 2007-04-27 2007-05-16 FENOC FirstEnergy Nuclear Operating Company Perry Nuclear Power Station 10 Center Road Perry, Ohio 44081 L. William Pearce Vice President 440-280-5382 Fax: 440-280-8029 April 27, 2007 PY-CEI/NRR-3040L United
* [2007-05-16] NRC Receipt of Perry Nuclear Power Plant, Unit 1, Response to Generic Letter 2003-01 "Control Room Habitability" (TAC No. MB9839). ML071060039 2007-05-03 5 05000440 GL-03-001 TAC MB9839 2007-05-03 2007-05-15 May 3, 2007 Mr. L. W. Pearce Site Vice President FirstEnergy Nuclear Operating Company Perry Nuclear Power Plant Mail Stop A-PY-A290 P.O. Box 97, 10 Center Road Perry, OH 44081-0097 SUBJECT: NRC RECEIPT O
* [2007-05-15] 03/02/2007 Perry EOC Annual Assessment Letter (Report 05000440-07-001). ML070610120 2007-03-02 8 2007-03-02 2007-05-14
* [2007-05-15] Perry Assessment Followup Letter. ML071280294 2007-05-08 4 05000440 NPF-058 2007-05-08 2007-05-14 May 8, 2007 Mr. L. William Pearce Site Vice President FirstEnergy Nuclear Operating Company Perry Nuclear Power Plant P. O. Box 97, 10 Center Road, A290 Perry, OH 44081-0097 SUBJECT: ASSESSMENT FOLLOWUP LETTER - PERRY
* [2007-05-17] Perry Nuclear Power Plant, Unit 1 - Issuance of Amendment RE: Revise Technical Specification 5.5.7, Ventilation Filter Test Program, To Correct Referenced Flow Units (TAC No. MD2181). ML071220366 2007-05-16 ML070930433+ML071340392+ FNWEBNAVIGATE=1.0 SYSTEMTYPE=MEZZANINE DOCUMENTID=071220366 STARTPAGE=1 LIBRARYNAME=ml_adams^hqntad01
* [2007-05-15] 03/21/2007 Letter Confirming Public Meeting with FirstEnergy Nuclear Operating Company Re: Perry Nuclear Power Plant Annual Performance. ML070450243 2007-02-14 4 2007-02-14 2007-05-14
* [2007-05-15] Final Report for the October 24, 2006, Radiological Emergency Preparedness (REP) Partial Participation Plume Exposure Pathway Exercise for the Perry Nuclear Power Plant. ML070370310 2007-01-26 102 2007-01-26 2007-05-14
* [2007-05-15] LER 06-005-00 for Perry Nuclear Power Plant, Decreasing Instrument Air Pressure Results in Manual Reactor Protection System Actuation. ML070470369 2007-02-09 5 2007-02-09 2007-05-14
* [2007-05-15] LER 06-006-00 for Perry Nuclear Power Plant re Primary Containment Airlock Door Inoperability Results in Operation Prohibited by Technical Specifications. ML070660469 2007-03-01 5 2007-03-01 2007-05-14
* [2007-05-15] Ltr 02/20/07 Perry Re Operator Licensing Examination Approval. ML070520326 2007-02-20 4 2007-02-20 2007-05-14
* [2007-05-15] Ltr 03/02/2007, Perry Nuclear Power Plant Closure of CAL 3-05-001, Closure of Long-Standing Open White Findings Transition from Multiple/Repetitive Degraded Cornerstone Column. ML070610103 2007-03-02 6 2007-03-02 2007-05-14
* [2007-05-15] Perry - License Amendment Request to Revise Diesel Fuel Oil Requirements Using the Consolidated Line Item Improvement Process. ML070650096 2007-01-19 11 2007-01-19 2007-05-14
* [2007-05-15] Perry - Response to a Request for Additional Information on a License Amendment Request to Revise Required Action B.1 in Technical Specification 3.3.5.1, "Emergency Core Cooling System (ECCS) Instrumentation". ML070740524 2007-03-08 4 2007-03-08 2007-05-14
* [2007-05-15] Perry - Supplemental Information in Support of a Proposed License Amendment Request to Revise the Intermediate Range Monitoring Instrumentation, Mode 5, Channel Functional Test Surveillance Frequency from 7 Days to 31 Days. ML070470263 2007-02-08 3 2007-02-08 2007-05-14
* [2007-05-15] Perry Nuclear Power Plant - NPDES Monthly Report Forms for the Month of January 2007, No Violations Occurred During This Period. ML070520267 2007-02-14 10 2007-02-14 2007-05-14
* [2007-05-15] Perry Nuclear Power Plant, Water Withdrawal Facility Registration Number: 01483. ML070440144 2007-02-01 5 2007-02-01 2007-05-14
* [2007-05-15] Perry Response to Request for Additional Information Regarding License Amendment Request Related to Emergency Diesel Generator Surveillance Testing Voltage and Frequency Limits. ML070650335 2007-02-22 4 2007-02-22 2007-05-14
* [2007-05-15] Perry, Semiannual Fitness-For-Duty Report for Period of July 1, 2006 through December 31, 2006. ML070590285 2007-02-20 4 2007-02-20 2007-05-14
* [2007-05-15] Perry, Unit 1 - Request for Relief No. VR-14 Regarding Emergency Service Water Manual Valve Testing Frequency. ML070360733 2007-03-09 8 2007-03-09 2007-05-14
* [2007-05-15] Press Release-III-07-004: NRC Returns Perry To Regular Oversight. ML070610275 2007-03-02 2 2007-03-02 2007-05-14
* [2007-05-15] Press Release-III-07-005 - NRC to Discuss 2006 Performance Assessment for Perry Nuclear Power Plant. ML070750369 2007-03-16 2 2007-03-16 2007-05-14
* [2007-05-15] Registration Certificate for In-Vitro Testing for Kenneth E. Killian, R.M.T., R.T., Perry County Memorial Hospital. ML043280570 1973-04-17 2 1973-04-17 2007-05-14
May 12, 2007
New this week from NRC Public Document Room
* [2007-05-10] Perry, Unit 1 - Issuance of License Amendment 142 Regarding Emergency Diesel Generator Surveillance Testing Voltage and Frequency Limits (TAC No. MC8997). ML070960051 2007-05-09 ML070960047+ML071200503+ FNWEBNAVIGATE=1.0 SYSTEMTYPE=MEZZANINE DOCUMENTID=070960051 STARTPAGE=1 LIBRARYNAME=ml_adams^hqntad01
* [2007-05-10] Perry, Unit 1 - Issuance of License Amendment 142 Regarding Emergency Diesel Generator Surveillance Testing Voltage and Frequency Limits. ML070960047 2007-04-30 12 05000440 NPF-058 TAC MC8997 2007-04-30 2007-05-09 ML070960051+ April 30, 2007 Mr. L. W. Pearce Site Vice President FirstEnergy Nuclear Operating Company Mail Stop A-PY-A290 P.O. Box 97, 10 Center Road Perry, OH 44081 SUBJECT: PERRY NUCLEAR POWER PLANT, UNI
* [2007-05-10] Perry, Unit 1 - Tech Spec Pages for Amendment 142 Regarding Emergency Diesel Generator Surveillance Testing Voltage and Frequency Limits. ML071200503 2007-04-30 5 05000440 NPF-058 TAC MC8997 2007-04-30 2007-05-09 ML070960051+ AC Sources-Operating 3.8.1 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.1.1 Verify correct breaker alignment and 7 days indicated power availability for each required offsite circuit
May 5, 2007
New this week from NRC Public Document Room
* [2007-05-05] ER 05000440-07-301 (DRS); 02/26/2007 - 03/02/2007; FirstEnergy Nuclear Operating Company; Perry Nuclear Power Plant; Initial License Examination Report. ML071210359 2007-04-26 29 05000440 NPF-058 ER-07-301 2007-04-26 2007-05-04 April 26, 2007 Mr. L. William Pearce Site Vice President FirstEnergy Nuclear Operating Company Perry Nuclear Power Plant P. O. Box 97, 10 Center Road, A290 Perry, OH 44081-0097 SUBJECT: PERRY NUCLEAR POWER P
* [2007-05-05] RO/SRO Initial Examination - Perry March 2007 ML071210394 2007-03-02 140 05000440 ER-07-301 2007-03-02 2007-05-04 QUESTION 1 The plant is operating at 100% power when the following events occur: On December 1st at 1000, ESW Pump A is declared INOPERABLE due to incorrect oil installed in the motor bearings. On December 1st at 18
* [2007-05-04] Perry, Unit 1, License Amendment, Issuance of Amendment Re: Revise TS to Change the Frequency of the Mode 5 Intermediate Range Monitoring Instrumentation Channel Functional Test. ML070580492 2007-04-27 18 05000440 NPF-058 TAC MD0144 2007-04-27 2007-05-03 ML070580506+ April 27, 2007 Mr. L. W. Pearce Site Vice President FirstEnergy Nuclear Operating Company Mail Stop A-PY-A290 P.O. Box 97, 10 Center Road Perry, OH 44081-0097 SUBJECT: PERRY NUCLEAR POWER PLANT
* [2007-05-04] Perry, Unit 1, Technical Specifications, Issuance of Amendment Re: Revise TS to Change the Frequency of the Mode 5 Intermediate Range Monitoring Instrumentation Channel Functional Test. ML071210291 2007-04-27 2 05000440 NPF-058 TAC MD0144 2007-04-27 2007-05-03 ML070580506+ RPS Instrumentation 3.3.1.1 SURVEILLANCE REQUIREMENTS (continued) SURVEILLANCE FREQUENCY SR 3.3.1.1.16 Verify Turbine Stop Valve Closure and 24 months Turbine Control Valve Fast Closure Trip Oi
* [2007-05-02] IR 05000440-07-002; 01/01/2007 - 03/31/2007; Perry Nuclear Power Plant; Operability Evaluations; Identification and Resolution of Problems. ML071170300 2007-04-25 32 05000440 NPF-058 IR-07-002 2007-04-25 2007-05-01 April 25, 2007 Mr. L. William Pearce Site Vice President FirstEnergy Nuclear Operating Company Perry Nuclear Power Plant P. O. Box 97, 10 Center Road, A290 Perry, OH 44081-0097 SUBJECT: PERRY NUCLEAR POWER P
* [2007-05-04] Perry, Unit 1, License Amendment, Issuance of Amendment Re: Revise TS to Change the Frequency of the Mode 5 Intermediate Range Monitoring Instrumentation Channel Functional Test. ML070580506 2007-05-03 ML070580492+ML071210291+ FNWEBNAVIGATE=1.0 SYSTEMTYPE=MEZZANINE DOCUMENTID=070580506 STARTPAGE=1 LIBRARYNAME=ml_adams^hqntad01
April 28, 2007
New this week from NRC Public Document Room
* [2007-04-26] Perry, Unit 1, Issuance of Amendment No 140, Deleting License Condition 2.F. ML070680197 2007-04-19 3 05000440 NPF-058 tac md3336 2007-04-19 2007-04-25 ML070680201+ April 19, 2007 Mr. L. W. Pearce Site Vice President FirstEnergy Nuclear Operating Company Mail Stop A-PY-A290 P.O. Box 97, 10 Center Road Perry, OH 44081 SUBJECT: PERRY NUCLEAR POWER PLANT, UNI
* [2007-04-26] Perry, Unit 1, Technical Specification Pages, Deleting License Condition 2.F. ML071140126 2007-04-19 1 05000440 NPF-058 tac md3336 2007-04-19 2007-04-25 ML070680201+ -6- D. FENOC is exempted from: 1) the requirements of Section lll.D.2(b)(ii), containment airlock testing requirements, Appendix J to 10 CFR Part 50, due to the special circumstance described i
* [2007-04-26] Perry, Unit 1, Issuance of Amendment re: Deleting License Condition 2.F ML070680201 2007-04-25 ML070680197+ML071140126+ FNWEBNAVIGATE=1.0 SYSTEMTYPE=MEZZANINE DOCUMENTID=070680201 STARTPAGE=1 LIBRARYNAME=ml_adams^hqntad01
April 21, 2007
New this week from NRC Public Document Room
* [2007-04-21] Perry, Units 1 & 2, Submittal of NPDES Monthly Report Forms for March 2007. ML071020131 2007-04-05 10 05000440 05000441 PY-CEI/OEPA-0469L 2007-04-05 2007-04-20 FENOC F.t &4t .We , Oeatn 7n Perry Nuclear Power Plant 10 Center Road Perry, Ohio 44081 L. W. Pearce. Vice President, Nuclear April 5, 2007 PY-CEI/OEPA-0469L Ohio Environmental Protection Agency Div
* [2007-04-19] Perry, Response to a Request for Additional Information on a License Amendment Request to Revise MODE 4 Residual Heat Removal Shutdown Cooling Requirements. ML071000154 2007-03-30 3 05000440 PY-CEI/NRR-3026L TAC MD2140 2007-03-30 2007-04-18 FENOC Perry Nuclear Power Station 10 Center Road FirstEnergy Nuclear Operating Company Perry, Ohio 44081 L. William Pearce 440-280-5382 Vice President Fax: 440-280-8029 March 30, 2007 PY-CEI/NRR-30
December 14, 2006
*
Perry workers shut down reactor as a precaution
Columbus Dispatch
Recent NRC inspections
* (released May 11) Perry report 50-440-2005-2
* Perry event followup report 50-440-2003-12 on Oct 2002 failure of core spray pump to start
* Perry high pressure core spray pump start failure report 50-440-2003-7
* Perry integrated emergency preparedness & resident report 50-440-2003-3
June 30, 2005
Summary of Plant Status - April 1 through June 30, 2005
The plant began the period in Mode 5 due to refueling outage (RFO) 10. Following completion of outage activities, the reactor achieved criticality at 5:21 p.m. on May 3, 2005. The plant entered Mode 1 at 3:04 p.m. on May 6, 2005, and the unit synchronized to the grid at 9:43 p.m. later that same day. After a series of power maneuvers to support control rod line adjustments and digital feedwater testing, the plant reached 100 percent power on May 16, 2005. The unit remained at or near 100 percent power until May 27, 2005, when power was reduced to 98 percent to insert control rod 06-35 for accumulator maintenance. The unit returned to 100 percent power later that same day. Accumulator maintenance was completed and the unit reduced power to 85 percent on May 29, 2005, to withdraw the control rod. The unit returned to 100 percent later the same day and remained at or near 100 percent power for the remainder of the period.
[Source: R. Powell (NRC senior resident inspector), et al., "Perry Nuclear Power Plant NRC Integrated Inspection Report 50-440/2005-6", July 20, 2005, ML052020198]
August 16, 2004
* Perry - licensed operator found to be unfit for duty; access terminated
March 22, 2004
* Perry - test of manual scram channel caused breakers to trip, many valves to close
December 22, 2003
* Perry - ECCS and other systems discovered inoperable due to two blown fuses
December 11, 2003
* Perry - Dec 17 public meeting in Lisle IL re emergency service water pump failure
December 3, 2003
Perry license renewal application to be filed in 2006
Fenoc plans to submit license renewal requests for Perry in 2006, according to comments made by Fenoc President Gary Leidich at a December 3 meeting of financial analysts. The current Perry license expires in 2026.
[Ref: John Dudley Miller (Platts-Oak Harbor) and Daniel Horner (Platts-Washington), "NRC okay of Davis-Besse restart hinges on remaining inspections", Nucleonics Week,ĘDecember 11, 2003,Ęp. 1]
August 22, 2003
A non-cited violation at Perry involved condition of 5kv cell switches. Rather than closing out the matter, the plant's corrective actions prompted NRC to find additional violation -- a mistaken assessment of the similar equipment -- auxiliary and 15kv breakers -- affected by the root cause identified. This finding was considered "more than minor because the failure to adequately identify extent of condition and take corrective actions to address degraded conditions could reasonably be viewed as a precursor to a significant event." Although the 15kv breakers are categorized as non-safety-related, the inspector noted "the risk significant loads which could have been adversely impacted included the 13.8kV bus L10 which supplies the Class 1E 4.16kV buses, the motor driven feedpump, and the recirculation pump motor fast speed supply breaker". The inspection report suggests that Perry should have been more curious as to why some 20% of the auxiliary switches inspected (by the same switch expert who inspected the cell switches) were found to require adjustment. Had this opportunity not been missed, the misanalysis of the 15kv breaker problem might have been identified. [full report, in pdf]
July 21, 2003
July 1, 2003
* Perry - Unusual Event prompted by Ohio earthquake (3.4 on Richter scale)
April 24, 2003
Bubble from pool and iodine alarm prompt Alert - see Event report.