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Category:INTERNAL OR EXTERNAL MEMORANDUM
MONTHYEARML20217F3351999-10-14014 October 1999 Notification of 991103-04 Southern Nuclear Operating Licensing Workshop in Birmingham,Alabama with Goal of Improving Licensing Interface Between Licensee & NRC ML20217M4281999-10-0808 October 1999 Requests That Attached Request for Addl Info Be Placed in Pdr.Informs That RAI Faxed to J Bailey on 991008 & Will Be Used to Facilitate Discussions During Upcoming Conference Call Between NRC Staff & SNC Staff ML20207E2431999-05-11011 May 1999 Requests That Encl RAI Be Placed in Pdr.Rai Faxed on 990511 to J Bailey of Snoc to Be Used to Facilitate Discussions During Upcoming Conference Call Between NRC & Snoc Staff ML20204B3651999-03-11011 March 1999 Forwards NRC Approved Operator Licensing Exam (Facility Outline & Initial Exam Submittal & as-given Operating Exam) for Tests Administered on 980721 ML20207L7111999-03-11011 March 1999 Informs That Attached Topics Faxed Today to J Bailey of Southern Nuclear Operating Co,Inc for Sole Purpose of Preparing Licensee Personnel for Upcoming Conference Call ML20204C4751999-03-11011 March 1999 Forwards Exam Repts 50-424/98-302 & 50-425/98-302 for Exams Administered on 980721 ML20207H9181999-02-0505 February 1999 Forwards Facility Submitted Outline,Initial Exam Submittal & as Given Operating Exam for Test Administered on 980413-15 at Plant ML20207H9401999-02-0505 February 1999 Forwards Exam Repts 50-424/98-301 & 50-425/98-301 with as Given Written Exam for Tests Administered on 980413-15 IR 05000425/20010871998-09-22022 September 1998 Redirects Info Encl & Previously Considered as Proprietary, Per .W Ltr NSD-NRC-98-5757 Stated That Encl Rept Is No Longer Considered Proprietary.Encls Originally Submitted as Part of File Package 9504250187 ML20236N6301998-04-0101 April 1998 Submits Task Interface Agreement (TIA-97-12) Suppl Evaluation of TS Required Monthly & Refueling Interval Testing of P-4 Interlock for Vogtle Units 1 & 2 ML20198M9691998-01-13013 January 1998 Notification of 980128 Meeting W/Util in Rockville,Md to Discuss Plant TSs Re Reactor Trip Setpoints & Associated Application for License Amend, ML20236N5921997-12-22022 December 1997 Forwards Task Interface Agreement (TIA-97-12) Evaluation of TS Required Monthly & Refueling Interval Testing of P-4 Interlock for Vogtle Units 1 & 2 ML20199G7471997-11-19019 November 1997 Forwards Memo from Hn Berkow to Jr Johnson, Re Task Interface Agreement 97-07 on Instrument Setpoints,To Be Placed in PDR ML20236N5341997-10-29029 October 1997 Forwards Task Interface Agreement (TIA-97-12) Evaluation of Monthly Surveillance Testing of Reactor Trip Bypass Breaker & ITS P-4 Interlock for Vogtle Units 1 & 2 in Response to 970505 Request from Region II ML20199J2931997-09-16016 September 1997 Discusses Region II Request for NRR Position on Util Practice of Establishing Procedures for RTS & ESF Actuation Sys Instrument Setpoints to Be Nominal Values W/Tolerances Beyond TS Max & Min Allowed Values ML20211D8861997-09-16016 September 1997 Forwards SG Tube Insp Results.Results Were Faxed to J Bailey in Preparation for Conference Call ML20236N2571997-08-0707 August 1997 Forwards TIA-97-07,evaluation Re Reactor Trip & Engineered Safety Features Actuation Sys Instrumentation Setpoints for Plant,Units 1 & 2 ML20141E1781997-05-16016 May 1997 Notification of 970522 Meeting W/Util in Rockville,Md to Allow Licensee to Brief NRC Staff on Results of Analyses of Damage to Unit 1 SG That Was Caused by Parts of Failed Guide Tube Pin Assembly on or About 960529 ML20137R4421997-04-0707 April 1997 Requests That Audio Tapes Identified Be Returned in Order to Return to Region II Office.Licensing Proceeding Terminated & Staff Acted on 10CFR2.206 Petition Initially Filed ML20134P0721997-02-21021 February 1997 Notification of 970304-06 Meeting W/Gpc in Waynesboro,Ga to Review Selected Aspects of Licensee 960515 Submittal to NRC Requesting Approval of Amend to Physical Security & Contingency Plan ML20133G1711997-01-10010 January 1997 Notification of 970116 Meeting W/Util in Rockville,Md to Discuss Schedule for Licensee Submittal & Staff Review & Approval of Plans to Install Addl Fuel Racks in Plant Fuel Pools ML20135F5111996-11-29029 November 1996 Informs That Time Provided by NRC Regulation within Which Commission May Act to Review Decision of Board (LBP-96-16) Has Expired.Decision Became Final Agency Action on 961129. W/Certificate of Svc.Served on 961129 ML20205C2841995-09-15015 September 1995 Informs That Lou Will Not Be Able to Attend 950923 Meeting, Due to Attendance in Headquarters with Chairman Steering Committee.He Will Also Be Gone on 950924 to Work on Vogtle Case ML20128G2831995-03-10010 March 1995 Discusses Region II Review of Proposed Ack Ltr for Vogtle Civil Penalty (EA 93-304),informing That L Reyes,Deputy Regional Administrator,Concurred on Document on 950310 ML20128G2671995-03-0909 March 1995 Forwards Proposed Ack/Closeout Ltr After Receipt of Gpc Check for Listed Amount in Vogtle Edg/Inaccurate Info Enforcement Action.Requests Assistance W/Expedition of Region Comments & Concurrence Re Ack/Closeout on Vogtle ML20128F5261995-01-20020 January 1995 Partially Deleted Memo Notifying Commission of Results of Settlement Discussions Initiated by Counsel for Georgia Power Co & Staff Intent to Accept Licensee Proposal to Resolve Matter ML20128G2291994-12-20020 December 1994 Informs That Last Version of Memo to Commission on Proposed Resolution of Enforcement Action in Vogtle Included in Attached File.Hard Copy to Be Provided.W/O Encl ML20128Q0711994-11-15015 November 1994 Forwards Vogtle Coordinating Group Evaluation of Georgia Power Co Response to Notice of Violation & Demands for Info ML20128G1521994-10-28028 October 1994 Discusses Result of OI Analysis of Gpc Response to Enforcement Action Per Conclusions in OI Rept, Case 2-90-020R ML20128G1311994-08-16016 August 1994 Discusses 940816 Telcon W/E Blake Re Vogtle Licensing Proceeding.E Blake Expressed Concern Re Length of Time Projected for NRC Staff Review of Gpc Response to NOV & Proposed Imposition of Civil Penalty for Vogtle ML20128Q0461994-08-15015 August 1994 Responds to 940804 Memo & Informs That Plant Coordinating Group Being Reassembled to Expeditiously Review,Analyze & Formulate Position on Adequacy of Responses by Gpc ML20129F7351994-06-0909 June 1994 Recommends That Issue Concerning Failure to Take Appropriate Action for Calcon Switch Problems Identified Prior to 900320 Be Closed W/O Further Action ML20128F5421994-05-0909 May 1994 Informs That J Lieberman States That All Vogtle Officials Notified & Press Release Scheduled for 940510 Approved.Task Force Recommended to Commission That Gpc Should Be Cited for Unacceptable Inaccuracies in Reporting to NRC Only ML20128F4891994-05-0909 May 1994 Discusses Factors Involved Re Possible Press Misinterpretation of Scheduled Press Release Concerning Vogtle Enforcement Action Against Gpc ML20128F4751994-05-0606 May 1994 Requests That Gpc & Southern Nuclear Operating Co Be Notified Re Attached Vogtle Press Release for 940509 ML20128G4311994-03-31031 March 1994 Partially Deleted Memo Informing That DPR Has Reviewed Regional Enforcement Recommendation,Draft Commission Paper & Demands for Info Re Vogtle Electric Generating Plant ML20129H1911994-03-0808 March 1994 Partially Deleted Memo Informing That on 940223,first Draft of Proposed Enforcement Action for Georgia Power Co Submission of Inaccurate & Incomplete Info on Plant DG Problem,Distributed ML20129H1361994-02-23023 February 1994 Partially Deleted Memo Forwarding Proposed Enforcement Action for Georgia Power Co Submission of Inaccurate & Incomplete Info on Plant DG Problem,For Review,Evaluation & Comment ML20059L3601994-01-31031 January 1994 Notification of 940202 Meeting W/Util in Rockville,Md to Discuss Review of Various Requested Licensing Activities ML20058K7791993-12-0606 December 1993 Forwards Ltr as Result of 931117 order,LBP-93-22 & Informs That Staff Will Answer Questions Recently Filed by Util ML20129F7291993-11-0505 November 1993 Informs How IIT Supporting Documents on Plant Accessed in Nudocs ML20057E2991993-10-0404 October 1993 Forwards Safety Evaluation Accepting Proposed Emergency Action Level Changes in Rev 15 of Plant Emergency Plan ML20129H0341993-09-16016 September 1993 Forwards for Implementation,Charter for Preparation of Enforcement Proposal Associated W/Oi Investigation Case 2-90-020 Re Reporting DG Reliability.Nominated Individuals to Review Info Collected by OI Listed ML20129H0121993-09-10010 September 1993 Summarizes 930908 NRC Meeting in Rockville,Md Re Plans for Reviewing Findings of Ongoing OI Investigation Concerning 930320 EDG Failures.Meeting Attendees Listed ML20056F7981993-08-24024 August 1993 Notification of 930908-09 Meeting W/Util in Rockville,Md to Discuss Status of Current Licensing Issues & Safety Initiatives for Plants ML20129F6481993-08-14014 August 1993 Documents Series of Meetings at Which Concerns Re Issues of Mgt Integrity & Attitude at Plant Presented & Discussed ML20056C1531993-03-17017 March 1993 Transmits Corrected Page Nine of NRC Brief in Response to Licensee Appeal of Licensing Board Order Granting Petition to Intervene, in Matter of Gap Re License Amend Dtd 930316. Encl Corrects Signature Page ML20128G8161993-02-0909 February 1993 Forwards Corrected Certificate of Svc Re License Amend, Changing Date of Svc from 930203 to 930205 ML20127K3851993-01-0606 January 1993 Notification of Significant Meeting on 930114 W/Util at Region II Re Emergency Plan Changes to Incorporate NUMARC Emergency Action Levels ML20126F4161992-12-18018 December 1992 Notification of 930107 Meeting W/Util in Rockville,Md to Discuss Design & Operability of Alternate Min Recirculation Path in Highhead Pressure Safety Injection Sys 1999-05-11
[Table view] Category:MEMORANDUMS-CORRESPONDENCE
MONTHYEARML20217F3351999-10-14014 October 1999 Notification of 991103-04 Southern Nuclear Operating Licensing Workshop in Birmingham,Alabama with Goal of Improving Licensing Interface Between Licensee & NRC ML20217M4281999-10-0808 October 1999 Requests That Attached Request for Addl Info Be Placed in Pdr.Informs That RAI Faxed to J Bailey on 991008 & Will Be Used to Facilitate Discussions During Upcoming Conference Call Between NRC Staff & SNC Staff ML20207E2431999-05-11011 May 1999 Requests That Encl RAI Be Placed in Pdr.Rai Faxed on 990511 to J Bailey of Snoc to Be Used to Facilitate Discussions During Upcoming Conference Call Between NRC & Snoc Staff ML20207L7111999-03-11011 March 1999 Informs That Attached Topics Faxed Today to J Bailey of Southern Nuclear Operating Co,Inc for Sole Purpose of Preparing Licensee Personnel for Upcoming Conference Call ML20204C4751999-03-11011 March 1999 Forwards Exam Repts 50-424/98-302 & 50-425/98-302 for Exams Administered on 980721 ML20204B3651999-03-11011 March 1999 Forwards NRC Approved Operator Licensing Exam (Facility Outline & Initial Exam Submittal & as-given Operating Exam) for Tests Administered on 980721 ML20207H9181999-02-0505 February 1999 Forwards Facility Submitted Outline,Initial Exam Submittal & as Given Operating Exam for Test Administered on 980413-15 at Plant ML20207H9401999-02-0505 February 1999 Forwards Exam Repts 50-424/98-301 & 50-425/98-301 with as Given Written Exam for Tests Administered on 980413-15 IR 05000425/20010871998-09-22022 September 1998 Redirects Info Encl & Previously Considered as Proprietary, Per .W Ltr NSD-NRC-98-5757 Stated That Encl Rept Is No Longer Considered Proprietary.Encls Originally Submitted as Part of File Package 9504250187 ML20236N6301998-04-0101 April 1998 Submits Task Interface Agreement (TIA-97-12) Suppl Evaluation of TS Required Monthly & Refueling Interval Testing of P-4 Interlock for Vogtle Units 1 & 2 ML20198M9691998-01-13013 January 1998 Notification of 980128 Meeting W/Util in Rockville,Md to Discuss Plant TSs Re Reactor Trip Setpoints & Associated Application for License Amend, ML20236N5921997-12-22022 December 1997 Forwards Task Interface Agreement (TIA-97-12) Evaluation of TS Required Monthly & Refueling Interval Testing of P-4 Interlock for Vogtle Units 1 & 2 ML20199G7471997-11-19019 November 1997 Forwards Memo from Hn Berkow to Jr Johnson, Re Task Interface Agreement 97-07 on Instrument Setpoints,To Be Placed in PDR ML20236N5341997-10-29029 October 1997 Forwards Task Interface Agreement (TIA-97-12) Evaluation of Monthly Surveillance Testing of Reactor Trip Bypass Breaker & ITS P-4 Interlock for Vogtle Units 1 & 2 in Response to 970505 Request from Region II ML20211D8861997-09-16016 September 1997 Forwards SG Tube Insp Results.Results Were Faxed to J Bailey in Preparation for Conference Call ML20199J2931997-09-16016 September 1997 Discusses Region II Request for NRR Position on Util Practice of Establishing Procedures for RTS & ESF Actuation Sys Instrument Setpoints to Be Nominal Values W/Tolerances Beyond TS Max & Min Allowed Values ML20236N2571997-08-0707 August 1997 Forwards TIA-97-07,evaluation Re Reactor Trip & Engineered Safety Features Actuation Sys Instrumentation Setpoints for Plant,Units 1 & 2 ML20141E1781997-05-16016 May 1997 Notification of 970522 Meeting W/Util in Rockville,Md to Allow Licensee to Brief NRC Staff on Results of Analyses of Damage to Unit 1 SG That Was Caused by Parts of Failed Guide Tube Pin Assembly on or About 960529 ML20137R4421997-04-0707 April 1997 Requests That Audio Tapes Identified Be Returned in Order to Return to Region II Office.Licensing Proceeding Terminated & Staff Acted on 10CFR2.206 Petition Initially Filed ML20134P0721997-02-21021 February 1997 Notification of 970304-06 Meeting W/Gpc in Waynesboro,Ga to Review Selected Aspects of Licensee 960515 Submittal to NRC Requesting Approval of Amend to Physical Security & Contingency Plan ML20133G1711997-01-10010 January 1997 Notification of 970116 Meeting W/Util in Rockville,Md to Discuss Schedule for Licensee Submittal & Staff Review & Approval of Plans to Install Addl Fuel Racks in Plant Fuel Pools ML20135F5111996-11-29029 November 1996 Informs That Time Provided by NRC Regulation within Which Commission May Act to Review Decision of Board (LBP-96-16) Has Expired.Decision Became Final Agency Action on 961129. W/Certificate of Svc.Served on 961129 ML20134B7891996-06-25025 June 1996 Board Notification 96-005:discussing Issues Which Involve Challenge Whether Southern Nuclear Operating Co,Inc Possesses Requisite Character,Competence & Integrity & Willingness to Abide by Regulatory Requirements ML20134B7501996-06-0505 June 1996 Board Notification 96-003:discussing Secretary of Labor Decision & Remand Order Which Found That Gap Managers Discriminated Against One of Their Employees,M Hobby ML20134B6771995-11-13013 November 1995 Board Notification 95-017:notifies of Contention Challenging Application of Gpc for Amends to Authorize Southern Nuclear to Operate Plant ML20205C2841995-09-15015 September 1995 Informs That Lou Will Not Be Able to Attend 950923 Meeting, Due to Attendance in Headquarters with Chairman Steering Committee.He Will Also Be Gone on 950924 to Work on Vogtle Case ML20128G2831995-03-10010 March 1995 Discusses Region II Review of Proposed Ack Ltr for Vogtle Civil Penalty (EA 93-304),informing That L Reyes,Deputy Regional Administrator,Concurred on Document on 950310 ML20128G2671995-03-0909 March 1995 Forwards Proposed Ack/Closeout Ltr After Receipt of Gpc Check for Listed Amount in Vogtle Edg/Inaccurate Info Enforcement Action.Requests Assistance W/Expedition of Region Comments & Concurrence Re Ack/Closeout on Vogtle ML20128F5261995-01-20020 January 1995 Partially Deleted Memo Notifying Commission of Results of Settlement Discussions Initiated by Counsel for Georgia Power Co & Staff Intent to Accept Licensee Proposal to Resolve Matter ML20128G2291994-12-20020 December 1994 Informs That Last Version of Memo to Commission on Proposed Resolution of Enforcement Action in Vogtle Included in Attached File.Hard Copy to Be Provided.W/O Encl ML20128Q0711994-11-15015 November 1994 Forwards Vogtle Coordinating Group Evaluation of Georgia Power Co Response to Notice of Violation & Demands for Info ML20128G1521994-10-28028 October 1994 Discusses Result of OI Analysis of Gpc Response to Enforcement Action Per Conclusions in OI Rept, Case 2-90-020R ML20128G1311994-08-16016 August 1994 Discusses 940816 Telcon W/E Blake Re Vogtle Licensing Proceeding.E Blake Expressed Concern Re Length of Time Projected for NRC Staff Review of Gpc Response to NOV & Proposed Imposition of Civil Penalty for Vogtle ML20128Q0461994-08-15015 August 1994 Responds to 940804 Memo & Informs That Plant Coordinating Group Being Reassembled to Expeditiously Review,Analyze & Formulate Position on Adequacy of Responses by Gpc ML20129F7351994-06-0909 June 1994 Recommends That Issue Concerning Failure to Take Appropriate Action for Calcon Switch Problems Identified Prior to 900320 Be Closed W/O Further Action ML20128F4891994-05-0909 May 1994 Discusses Factors Involved Re Possible Press Misinterpretation of Scheduled Press Release Concerning Vogtle Enforcement Action Against Gpc ML20128F5421994-05-0909 May 1994 Informs That J Lieberman States That All Vogtle Officials Notified & Press Release Scheduled for 940510 Approved.Task Force Recommended to Commission That Gpc Should Be Cited for Unacceptable Inaccuracies in Reporting to NRC Only ML20128F4751994-05-0606 May 1994 Requests That Gpc & Southern Nuclear Operating Co Be Notified Re Attached Vogtle Press Release for 940509 ML20128G4311994-03-31031 March 1994 Partially Deleted Memo Informing That DPR Has Reviewed Regional Enforcement Recommendation,Draft Commission Paper & Demands for Info Re Vogtle Electric Generating Plant ML20129H1911994-03-0808 March 1994 Partially Deleted Memo Informing That on 940223,first Draft of Proposed Enforcement Action for Georgia Power Co Submission of Inaccurate & Incomplete Info on Plant DG Problem,Distributed ML20129H1361994-02-23023 February 1994 Partially Deleted Memo Forwarding Proposed Enforcement Action for Georgia Power Co Submission of Inaccurate & Incomplete Info on Plant DG Problem,For Review,Evaluation & Comment ML20059L3601994-01-31031 January 1994 Notification of 940202 Meeting W/Util in Rockville,Md to Discuss Review of Various Requested Licensing Activities ML20058K7791993-12-0606 December 1993 Forwards Ltr as Result of 931117 order,LBP-93-22 & Informs That Staff Will Answer Questions Recently Filed by Util ML20059M9191993-11-19019 November 1993 Board Notification 93-023:forwards Region II Allegation Review Summary Rept Re Alleger Concern on Plant Diesel Generators ML20129F7291993-11-0505 November 1993 Informs How IIT Supporting Documents on Plant Accessed in Nudocs ML20057E2991993-10-0404 October 1993 Forwards Safety Evaluation Accepting Proposed Emergency Action Level Changes in Rev 15 of Plant Emergency Plan ML20129H0341993-09-16016 September 1993 Forwards for Implementation,Charter for Preparation of Enforcement Proposal Associated W/Oi Investigation Case 2-90-020 Re Reporting DG Reliability.Nominated Individuals to Review Info Collected by OI Listed ML20129H0121993-09-10010 September 1993 Summarizes 930908 NRC Meeting in Rockville,Md Re Plans for Reviewing Findings of Ongoing OI Investigation Concerning 930320 EDG Failures.Meeting Attendees Listed ML20056F7981993-08-24024 August 1993 Notification of 930908-09 Meeting W/Util in Rockville,Md to Discuss Status of Current Licensing Issues & Safety Initiatives for Plants ML20129F6481993-08-14014 August 1993 Documents Series of Meetings at Which Concerns Re Issues of Mgt Integrity & Attitude at Plant Presented & Discussed 1999-05-11
[Table view] |
Text
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une 9, 1994 Memo To: J. Johnson, Acting Director, Division of Reactor Projects l Via: M. Sinkule, Branch Chief, Branch 3 %d5 /s[id From: Pierce H. Skinner, Section Chief 3B
Subject:
Calcon Switches at Vogtle During 3/20/90 Site Area Emergency Event Backaround At the time I assumed the Section Chief position in the region, Ken Brockman infonned me that one item remained to be addressed by the Region II staff associated with the MarchThis 20, 1990, Site Area Emergency (SAE) enforcement conference.
item was associated with Calcon switches. The issue was based upon whether GPC had taken appropriate corrective action for previous failures of Calcon switches and whether the licensee with the NRC in had been open with their discussions addressing this issue.
Chronoloov NUREG 1410 was issued in June 1990. In the June 1990 Executive Summary, the Incident Investigation Team (IIT) concluded that "The preliminary evaluation of the diesel generator trips indicates that the most probable cause of the trips involved the failure of Calcon jacket temperature sensors." The IIT also identified that a significant number of Calcon sensor failures had occurred at Vogtle since 1985.
A list of the failures was identified in Appendix I of the NUREG. This appendix identified a total of 69 Calcon switch failures. From 1985 - 1990, 47 were for temperature sensors and 14 were for pressure sensors.
July 9, 1990 In a letter to the NRC from GPC, the licensee commented on the NUREG contents. One of the comments was that the conclusions reached by the IIT concerning that Vogtle had a high number of failures of Calcon switches compared to the rest of the industif was not based on comparable data.
Aug. 17, 1990 In a note to Jim Sniezek from Ed Jordan, Mr. Jordan states that a review was conducted of GPC's comments on NUREG 1410. Based on this review a conclusion that the NRC did not disagree with the GPC comments and no f onnal reply to GPC was ;
considered necessary.
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l Aug. 22, 1990 In torrespondence f rom NRC to GPC announcing the Confirmation of an Enforcement Meeting to discuss items identified by the IIT, three issues were to be included in the GPC presentation. The third issue that was required to be discussed was the i reasons that the Vogtle root cause analysis program !
did not investigate the totality of continuing I diesel generator problems which had been experienced at the plant.
Sept. 5, 1990 The licensee made a presentation at Region II offices on September 5, 1990. This conference is addressed in NRC correspondence dated Oct. 1, 1990.
This correspondence includes a copy of the slides used by GPC during the meeting. There appears to be no specific slides to address the root cause discussing various program. There are slides historical problems and the actions taken by GPC in response of each of these examples, but there is no indication that root cause analysis was addressed.
Also in this presentation , GPC identified that since the unit 1 commenced operation, there had been 8 failures ( 3 defective and 5 calibration problems) of pressure sensors prior to 3/20/90.
Oct. 19, 1990 On Oct. 19, NRC issued a Notice of Violation and (S40,000)
Proposed Imposition of Civil Penalty based on the IIT findings and Enforcement Conference information on Sept. 5. In that letter, a reference is made to the third issue discussed at the conference and states " A third issue discussed at the Enf orcement Conference involved our concerns with your root cause analys:Ls of diesel generator problems. This matter will be addressed ,
separately." During discussions between me and Ken Brockman, he was of the opinion that this issue would be addressed as part of the investigation
~
being conducted at that time by Office of Investigation (OI).
Dec. 17, 1993 OI has issued their findings in Case No. 2-90-020R.
A review of this report has not identified anything that would address the outstanding issue with respect to the root cause analysis problem discussed in the above documents.
- J i
i Additional Information: i
~
Following the SAE, NRC has reviewed EDG activities and i reviewed root cause/ corrective action activities on a frequent basis. The following Inspection Reports have excerpts addressing these issues:
50-424,425/90-13 dated 7/23/90 ,
50-424,425/90-17 dated 9/20/90 l 50-424,425/90-20 dated 10/25/90 ;
50-424,425/90-25 dated 11/21/90 50-424,425/90-23 dated 12/10/90 50-424,425/91-02 dated 4/22/91 50-424,425/91-09 dated 6/12/91 50-424,425/91-19 dated 8/1/91 50-424,425/91-25 dated 1/2/92 (SALP) 50-424,425/92-07 dated'5/21/92 50-424,425/92-30 dated 2/9/93 (EDG Special Report) 50-424,425/93-15 dated 8/23/93 50-424,425/93-27 dated 1/11/94 l In addition, a team of NRR inspectors were onsite 12/17 -
18/90 to review EDG High Jacket Water Temperature trip during j postulated Control Room fire, i In a recent inspection performed between May 9 thru May 20, 1994, by two region II DRS inspectors, accompanied by a NRR Calcon switch Instrument and Controls Branch specialist, calibration and histories of failures, was reviewed in depth.
This inspection did not identify any violations associated with Calcon switches. In addition, they identified that the licensee had corrected the deficiencies that existed in March 20, 1990, timeframe and failures since that time have been minimal.
2
Conclusions:
Based on a review of the information contained in the inspection reports and other information identified above, GPC has not hadSinceany significant problems with Calcon switches since mid - 1990.
that time, the switches that were involved with the EDG failure of 3/20/90, have been replaced with a revised model of the switch and the procedures have been modified to provide consistent results during calibration. The review also identified that on numerous occasions the SAER group has been recognized by the resident staff as doing an outstanding root cause analysis and implementing prompt correction of the root causes of deficiencies and occurrences. i Recnmmandations Based on this review, I recommend that the issue concerning failure to take appropriate action for Calcon switch problems identified prior to the March 20, 1990, SAE at Vogtle, be closed without further action. The resurrection of the issue based on events prior to 3/20/90, and issuance of _ a violation would serve no.
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The closure, if purpose and would
- not enhance public safety.
approved, could be accomplished by. dressing this open issue in the resident inspector's report.
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Pierce Skinner, Section Chief 3B CC: ;
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