TAC:45202
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Request for: Approved, Closed | |
Initiation
Questions Answers Results Other: ML19247E427, ML19247E430, ML19247E431, ML19247E432, ML19247E433, ML19248C222, ML19350D685, ML19350D686, ML20004B075, ML20008F881, ML20033A354, ML20042C115, ML20042C117, ML20042C118, ML20042C120 | |
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MONTHYEARML19248C2221980-10-29029 October 1980
[table view]Provides Insights on Overcooling Transients in Plants W/B&W Nsss.Frequency of Overcooling Transients Diminishes Prior to Commercial Operations.Summary of Overcooling Events Encl ML19247E4321981-03-0303 March 1981 Provides fracture-mechanics Parametric Analysis of Overcooling Accident at Facility,In Response to Request ML19247E4331981-04-10010 April 1981 Updates Re Safety Implications of Control Sys & Dynamic Characteristics of Nuclear Facilities.Pressurized Thermal Shock Phenomena & Control Sys Implications to Safety Have Not Been Analyzed ML20042C1171981-04-11011 April 1981 Plant Shutdown & Cooldown, Revision 19 ML19247E4301981-04-21021 April 1981 Forwards Preliminary Assessment of Frequency of Excessive Cooldown Events Challenging Vessel Integrity,In Response to 810417 Request ML19247E4311981-04-21021 April 1981 Forwards Modified Table 1 to 810421 Memo.Further Consideration of B&W Two Bus Design W/Failure of Single Bus Has Led to Revision of HEP ML19247E4271981-04-28028 April 1981 Forwards Preliminary Assessment of Thermal Shock to PWR Reactor Pressure Vessels,In Response to 810416 Memo ML19350D6861981-04-30030 April 1981 EPRI Research on Properties of Irradiated Matl Pertinent to Overcooling Transients ML20008F8811981-05-0505 May 1981 Informs That Data Presented in BAW-1511 P, Radiation- Induced Reduction & Charpy Upper-Shelf Energy of Reactor Vessel Welds, Is Applicable to Facility.Completion of Work in Other Phases of Program Will Justify Plant Operation ML19350D6831981-05-12012 May 1981 Forwards Ltr Rept in Response to NRC 810429 Request for Addl Info Re Thermal Shock Issue.Also Forwards Summary of EPRI Programs ML20004A4921981-05-12012 May 1981 Discusses Results of Preliminary Review of Thermal Shock to PWR Pressure Vessels.Reasonable Assurance Found That Plant Can Continue to Operate During Generic Evaluation ML19350D6851981-05-15015 May 1981 Ltr Rept on Reactor Vessel Brittle Fracture Concerns in B&W Operating Plants ML20004B0751981-05-22022 May 1981 Notifies That Info Provided in Re Reactor Vessel Brittle Fracture Concerns in B&W Plants Is Applicable to Facility.Util Will Perform Further Fracture Analyses & Participate in Owners Group Activities Re Thermal Shock ML20030A7701981-07-20020 July 1981 Notification of 810728,29 & 30 Meetings W/B&W,Westinghouse & C-E Owners Groups in Bethesda,Md to Discuss Thermal Shock to Reactor Pressure Vessel Issue ML20030D6551981-08-21021 August 1981 Requests Addl Info Re Pressurized Thermal Shock to Reactor Pressure Vessels,Per Review of PWR Owners Group 810515 & Licensees 810522 Responses to NRC ML20033A3541981-10-30030 October 1981 Forwards NRC Evaluation of ORNL Rept on Pressurized Thermal Shock.Rept Does Not Change Previous NRC Conclusion That Probability of Occurrence of Severe Pressurized Overcooling Transients Too Low to Require Immediate Action ML20042C1201982-03-0808 March 1982 Loss of Steam Generator Feed, Revision 16 ML20042C1181982-03-0808 March 1982 Loss of Reactor Coolant/Rcs Pressure, Revision 17 ML20042C1151982-03-17017 March 1982 Responds to NRC & Submits Addl Info Re NUREG-0737 Item II.K.2.13, Thermal Mechanical Rept. Procedures Re Plant Shutdown & Cooldown,Loss of Reactor Coolant/Reactor Coolant Pressure & Loss of Steam Generator Feed Encl ML20054H6621982-06-21021 June 1982 Comments on Proposed Regulatory Position Re Pressurized Thermal Shock,As Discussed at 820609 Meeting W/Nrc.Programs Undertaken to Prevent Overcooling,Following 780320 Event, Also Discussed 1981-05-12 | |
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