TAC:66405
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MONTHYEARML20235Z4081987-10-16016 October 1987
[table view]Summary of Operating Reactors Events Meeting 87-35 on 871013.List of Attendees,Events Discussed,Significant Elements of Events & Summary of Reactor Scrams & Comparison of Wk Statistics W/Industry Averages Encl ML13319A7911987-10-16016 October 1987 Forwards Description of ESF Single Failure Analysis,Per NRC 860923 Request,Resulting from 860730 Failure of PT-59 Which Identified Single Failure Susceptibility of Reactor Protection Sys.Final Rept Will Be Submitted by 871106 ML13336A0441987-10-20020 October 1987 Summary of 871009 Meeting W/Util in Bethesda,Md Re Licensee Identified Possible Failure in ESF Equipment.List of Attendees & Slides Used by Licensee Encl ML13333A5941987-12-0101 December 1987 Forwards Revised Better Estimate Analysis for Cases 5 & 6 to Support Justification for Continued Operation for Remainder of Cycle.Better Estimate Analysis for Core Response During Main Steam Line Break (Cases 5 & 6) Also Encl ML13333A6031987-12-0202 December 1987 Forwards Safety Evaluation Accepting Util 871016 Single Failures Analysis for Esf,Per 871009 Meeting.Justification for Interim Plant Operation Acceptable Until 871214,pending Further Analysis ML13333A6081987-12-0202 December 1987 Safety Evaluation Re Single Electrical Failures Affecting safety-related Function of Esfs.Util 871016 Justification for Continued Plant Operation Acceptable Until 871214. Operation Beyond 871214 Must Be Supported by Addl Analyses ML13333A6001987-12-0808 December 1987 Provides Addl Info Re ESF Single Failure Analysis,Including Discussion of Method Used to Determine Min Acceptable DNBR Applicable for Macbeth Correlation at Sys Pressures Established by Analysis,Per 871204 Request.Graph Also Encl ML13333A6141987-12-0909 December 1987 Forwards Proprietary ESF Single Failure Analysis Re Min Value of Dnbr.Proprietary Calculation of DNBR & Supporting Affidavit Withheld (Ref 10CFR2.790) ML13333A6321987-12-11011 December 1987 Safety Evaluation Supporting Util Justification for Interim Plant Operation Re ESF Single Failure Vulnerability ML13333A6271987-12-11011 December 1987 Forwards Safety Evaluation Re Util 871016 Submittal of ESFs Single Failure Analyses & 871201,08 & 09 Submittals of Analyses Justifying Operation of Plant for Remainder of Current Operating Cycle.Justification Acceptable ML13331B0101988-02-19019 February 1988 Forwards Fee for 871016 Application for Review of Justification for ESFs Single Failure Analysis,Per 880127 Request ML13331B0581988-07-19019 July 1988 Advises That Calculation CAW-87-130 Will Be Withheld from Public Disclosure Per 10CFR2.790(b)(5) & Section 103(b) of Atomic Energy Act of 1954,per 871209 Request ML13336A0991988-07-27027 July 1988 Confirms Discussions on Closeout of Event 10237 Re Newly Discovered ESF Single Failure Vulnerability Reported on 871007.Final Review of Longer Term Corrective Action Being Conducted Under Tac 66624 1987-12-02 | |
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