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Category:Memoranda
MONTHYEARML21333A2412021-11-24024 November 2021
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50.69 Apla SE Input L-2018-LLA-0482
ML17142A2382017-05-25025 May 2017
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Enclosure 1 - (72.30 DFP Reviews to Be Completed 2015) - Memo T Bowers from s Ruffin, Technial Assistance Requests - Review 2015 Tri-Annual Decommissioning Funding Plans for Multiple Independent Spent Fuel Storage Installations
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Memo T Bowers from s Ruffin, Technical Assistance Requests - Review 2015 Tri-Annual Decommissioning Funding Plans for Multiple Independent Spent Fuel Storage Installations W/ Encl 2 (Template)
ML16075A3292016-03-16016 March 2016
OEDO-16-00165 - Briefing Package for Drop-In Visit on March 23, 2016, by Senior Management of Exelon Generation Company, LLC with the NRC Executive Director for Operations
ML14363A0452014-12-29029 December 2014
Safety Evaluation Close-out Letter for Calvert Cliffs Nuclear Power Plant and Independent Spent Fuel Storage Installation with Enclosure
ML14055A2132014-02-25025 February 2014
Summary of Telephone Conference Regarding the Verbal Authorization of Relief Request RR-ISI-04-08, Revision 1
ML14003A0242014-01-10010 January 2014
Summary of Telephone Conference Regarding the Verbal Authorization of Relief Request RR-ISI-04-09
ML13304B4032013-11-0101 November 2013
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ML13267A2852013-09-25025 September 2013
Interim Staff Evaluation and Request for Additional Information - Calvert Cliffs Nuclear Plant, Unites 1 and 2 Regarding Overall Integrated Plan for Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051)
ML13226A0902013-08-14014 August 2013
Notice of Forthcoming Meeting with Constellation Energy Nuclear Group, LLC
ML13214A3532013-08-0606 August 2013
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ML13045A1822013-02-19019 February 2013
March 20, 2013, Notice of Forthcoming Teleconference with Calvert Cliffs and Nrc/Nrr Staff to Have Additional Discussions of Licensees'S Proposed Path for Resolution of Generic Letter 2004-02
ML13050A5112013-02-19019 February 2013
MC4672-3 Corrected Notice -Public Meeting on March 20, 2013 Re-GL2004-02
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Notice of Public Meeting with Constellation Energy Nuclear Group, LLC Regarding NRCs Assessment of Safety Performance at Calvert Cliffs Nuclear Power Plant
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October 14, 2011, Summary of License Amendment Request (LAR) No. 10 Pre-Application Meeting with Calvert Cliffs Nuclear Power Plant, LLC, (TAC No. L24576)
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ML1011903842010-05-0606 May 2010
Notice of Forthcoming Conference Call with Calvert Cliffs to Discuss Supplemental Responses to Generic Ltr. 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors
ML0909705822009-04-0707 April 2009
Phone Call Summary with Licensees and Alion Science and Technology on April 2, 2009 to Address NRC Staff Position on Chemical Effects Refinements
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DHS, Calvert Cliffs Consultation Report
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Summary of Phone Call with Licensees Concerning Sump Strainer Head Loss Testing
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Draft Regulatory Guide for Comment
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Commitment Lists for Renewed Operating License (ROL) Plants with No Commitment Appendix Attached to Its ROL Sers/Nuregs for Use with IP-71003
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Revised Closeout Letter for Bulletin 2003-01, Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-Water Reactors.
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ML0525007022005-09-20020 September 2005
Closeout Letter for Bulletin 2003-01, Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-Water Reactors.
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Basf, Radioactive Waste Manifests, Princeton and Ewing Sites, Dtd January 2001 to September 2002
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ML0307205722003-03-26026 March 2003
Telephone Conversation with Representatives of Calvert Cliffs Nuclear Power Plant, Inc., Concerning the Licensee'S Ongoing Reactor Pressure Vessel Head Inspection Program
ML0228801162002-10-15015 October 2002
Evaluation of the Risk Assessment Information Provided by Calvert Cliffs Nuclear Power Plant in Support of Its Request to Decrease the Surveillance Testing Interval for Verifying Boron Concentration in the Safety Injection Tanks from Once E
ML0215803662002-06-0606 June 2002
Memo to R. Bellamy, RGN-I from: M. Tokar Subject: Region I Independent Spent Fuel Storage Installation Inspection Plans Attachment: Sfpo Comments to Region I Integrated Inspection Plans
ML0210603052002-05-24024 May 2002
Reply to Licensee'S Response to Order for Interim Safeguards and Security Compensatory Measures
ML0209101702002-04-0404 April 2002
Documentation of Conference Call to Calvert Cliffs Nuclear Power Plant, Unit No. 1 and 2 on March 26, 2002, Regarding Reactor Vessel Head Inspection Activities
2021-05-21
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Text
April 21, 2006 MEMORANDUM TO: Jennifer L. Uhle, Deputy Director for Materials Engineering Division of Fuel, Engineering, and Radiological Research Office of Nuclear Regulatory Research THRU: Shah N. Malik, Acting Chief /RA/
Component Integrity Branch Division of Fuel, Engineering, and Radiological Research Office of Nuclear Regulatory Research FROM: Mark Kirk, Senior Materials Engineer /RA/
Component Integrity Branch Division of Fuel, Engineering, and Radiological Research Office of Nuclear Regulatory Research
SUBJECT:
RESULTS OF PTS ANALYSIS OF CALVERT CLIFFS UNIT 1 TO POST AS PUBLIC DOCUMENTS INTO ADAMS Analysis of the Calvert Cliffs Unit 1 was part of the original plan for the PTS re-evaluation project. However, as the project developed the decision was made by the management of the old Division of Engineering Technology that detailed analysis of Calvert Cliffs Unit 1 was not needed to support the projects goals. At that time the decision was also made that the then-existing thermal hydraulic (TH) analysis of Calvert Cliffs Unit 1 should be documented, and that these TH transients should be run through the probabilistic fracture mechanics code FAVOR.
The enclosed reports document the results of these analysis. These results demonstrate that our expectations based on analysis of Oconee Unit 1, Palisades, and Beaver Valley Unit 1 are borne out for Calvert Cliffs Unit 1: that is, severe primary side events like medium to large diameter pipe breaks and stuck-open valves that later re-close dominated PTS risk.
The enclosed reports should be placed into ADAMS as public documents.
Enclosures:
As stated
April 21, 2006 MEMORANDUM TO: Jennifer L. Uhle, Deputy Director for Materials Engineering Division of Fuel, Engineering, and Radiological Research Office of Nuclear Regulatory Research THRU: Shah N. Malik, Acting Chief /RA/
Component Integrity Branch Division of Fuel, Engineering, and Radiological Research Office of Nuclear Regulatory Research FROM: Mark Kirk, Senior Materials Engineer /RA/
Component Integrity Branch Division of Fuel, Engineering, and Radiological Research Office of Nuclear Regulatory Research
SUBJECT:
RESULTS OF PTS ANALYSIS OF CALVERT CLIFFS UNIT 1 TO POST AS PUBLIC DOCUMENTS INTO ADAMS Analysis of the Calvert Cliffs Unit 1 was part of the original plan for the PTS re-evaluation project. However, as the project developed the decision was made by the management of the old Division of Engineering Technology that detailed analysis of Calvert Cliffs Unit 1 was not needed to support the projects goals. At that time the decision was also made that the then-existing thermal hydraulic (TH) analysis of Calvert Cliffs Unit 1 should be documented, and that these TH transients should be run through the probabilistic fracture mechanics code FAVOR.
The enclosed reports document the results of these analysis. These results demonstrate that our expectations based on analysis of Oconee Unit 1, Palisades, and Beaver Valley Unit 1 are borne out for Calvert Cliffs Unit 1: that is, severe primary side events like medium to large diameter pipe breaks and stuck-open valves that later re-close dominated PTS risk.
The enclosed reports should be placed into ADAMS as public documents.
Enclosures:
As stated DISTRIBUTION: DET r/f MEB r/f W. Bateman R. Hardies B. Elliott M. Mitchell S. Malik T. Mintz J Uhle DOCUMENT NAME: E:\Filenet\ML061110167.wpd OAR in ADAMS? (Y or N) Y ADAMS ACCESSION NO:PKG#: ML061100526 TEMPLATE NO. RES: 006 Publicly Available? (Y or N) Y DATE OF RELEASE TO PUBLIC Immediate SENSITIVE? N To receive a copy of this document, indicate in the box: "C" = Copy without enclosure "E" = Copy with enclosure "N" = No copy OFFICE RES/DFERR/ME/CIB RES/DFERR/ME/CIB RES/DFERR/ME SISP REVIEW NAME M. Kirk /RA/ S. Malik /RA/ J. Uhle /RA/ M Kirk /RA/
DATE 04/21/06 04/21/06 04/21/06 04/21/ 06 OFFICIAL RECORD COPY
