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Partial response to FOIA request for documents re nuclear MSIVs for plant.App A documents in PDR.App B documents encl & also in PDR.

Accession Number: ML20238A944

Date Released: Tuesday, September 15, 2020

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• ML20238A940 - Partial response to FOIA request for documents re nuclear MSIVs for plant.App A documents in PDR.App B documents encl & also in PDR. (5 page(s), 8/28/1987)
• ML20244D225 - Comments on util application for authorization to utilize alternate requirements of 10CFR50.55a re RCPB components. NB-2211 requirements of Section III for Class 1 components not met. (3 page(s), 2/15/1985)
• ML20244E388 - Forwards safety evaluation & SALP input supporting util 861010 request for schedular exemption from GDC 54 & GDC 55 re MSIV operability to permit fuel loading & precriticality testing. (1 page(s), 10/22/1986)
• ML20245A561 - Forwards SER & SALP input re util request for permission to operate w/wye pattern globe MSIVs w/o leakage control sys being required.Wye pattern globe MSIVs replaced ball-type MSIVs.Request granted. (1 page(s), 4/8/1987)
• ML20238C580 - Safety evaluation concluding that facility may resume startup testing & operation for first operating cycle w/ installed refurbished MSIVs.Necessity of addl leak testing to be determined after review of prototype test results. (9 page(s), 2/2/1987)
• ML20238C116 - Safety evaluation supporting schedular exemption from GDC 54 & 55 re MSIV operability to permit fuel load.SALP input also encl. (3 page(s), 10/22/1986)
• ML20244E235 - Forwards Plant Sys Branch SER re util 860806 addl Tech Spec changes concerning 10CFR50,App J.MSIV change should be resolved prior to exceeding 5% power as leak test method not approved by staff.SALP input also encl. (44 page(s), 8/27/1986)
• ML20238C693 - Forwards NRR SALP input for facility for Feb 1986 - Jan 1987,per NRR Ofc Ltr 44 & NRC Manual Chapter 0516,SALP. (9 page(s), 3/12/1987)
• ML20238C643 - Forwards safety evaluation & SALP input re util 861021,1117, 1208,1216 & 870127 submittals re MSIV mechanical design & closure time problems.Modified actuator design & closure time operability acceptable.Confirmatory info required. (1 page(s), 2/5/1987)
• ML20238C712 - Safety evaluation concluding that facility may resume operation w/o leakage control sys but w/post-accident leakage mgt. (9 page(s), 4/8/1987)
• ML20238C168 - Forwards safety evaluation re util 861111 & 17 requests for removal of MSIV actuators from four valves used to maintain secondary containment integrity.Proposed changes acceptable. W/o safety evaluation. (2 page(s), 11/20/1986)
• ML20244D463 - Forwards correspondence w/Hauptabtei lung furdie Sicherheit der Kernanlagen re use of Gulf & Western ball valves at Leibstadt Nuclear Power Plant.Valves similar to MSIVs used at Nine Mile Point Unit 2. (1 page(s), 9/13/1985)
• ML20238C133 - Safety evaluation accepting refurbished MSIVs for plant use up to first refueling,contingent on prototype test performance.Conditions stated. (7 page(s), 10/27/1986)
• ML20244E403 - Forwards safety evaluation & SALP input re operation of MSIVs w/refurbished seat & ball,per util 861008,10,17 & 20 ltrs.Refurbished MSIVs acceptable for providing secondary containment integrity prior to criticality. (10 page(s), 10/27/1986)
• ML20238B200 - Ack receipt of info re ball-valve experience at Leibstadt Nuclear Power Station.Info significant aid in review of similar valves used at US plant.Comparable assistance offered in return. (1 page(s), 9/9/1987)
• ML20238C720 - Discusses amend change re facility valves.Explanation of set point change,description of deleted license condition & discussion of valve designation change recommended.Info re MSIV prototype testing,viewgraphs & related info also encl. (45 page(s), 5/14/1987)
• ML20244E456 - Notifies of licensee 861111 & 17 proposals to temporarily remove actuators from MSIVs used to isolate secondary containment,for mod & reinstallation.Secondary containment integrity not compromised.SALP input encl. (2 page(s), 11/19/1986)
• ML20238C198 - Forwards SER re operation of MSIVs during first cycle w/ refurbished seat & ball (leak integrity problem).Resumption of startup testing & operation for first operating cycle w/ installed refurbished MSIVs authorized.SALP input also encl. (1 page(s), 2/2/1987)
• ML20238C650 - Safety evaluation accepting MSIVs for facility operation up to first refueling,contingent on successful completion of preoperational tests & prototype testing program.Briefing for Commissioner Asselstine re MSIVs & SALP input also encl. (38 page(s), 2/5/1987)