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MONTHYEARML0209101702002-04-0404 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
Project stage: Other
ML0214302462002-05-28028 May 2002
Bulletin 2002-01, Reactor Pressure Vessel Head Degradation and Reactor Coolant Pressure Boundary Integrity, 15-Day Response
Project stage: Other
ML0224000952002-09-0606 September 2002
Bulletin 2002-01, Reactor Pressure Vessel Head Degradation and Reactor Coolant Pressure Boundary Integrity, 15-Day Response for Calvert Cliffs Nuclear Power Plant, Unit No. 1 (Tac MB4533)
Project stage: Other
ML0232304472002-11-19019 November 2002
Bulletin 2002-01, Reactor Pressure Vessel Head Degradation and Reactor Coolant Pressure Boundary Integrity, 60-Day Response for Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2 Request for Additional Information
Project stage: RAI
ML0306400672003-02-28028 February 2003
BL2002-01 60-Day Response Draft Audit Plan
Project stage: Draft Other
2002-05-28
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Category:Memoranda
MONTHYEARML21333A2412021-11-24024 November 2021
Level 1 FEMA Finding Successfully re-demonstrated on November 23, 2021
ML21277A2472021-11-0505 November 2021
Notification of Significant Licensing Action - Proposed Issuance of Order Approving the Transfer of Licenses for Which a Hearing Has Been Requested - Exelon Generation Company, LLC; Et. Al
ML21130A0382021-05-21021 May 2021
Memo to File - Draft Request for Additional Information Relief Request CISI-03-01 Concerning Containment Unbonded Post-Tensioning System Inservice Inspection Requirements
ML21067A0922021-04-20020 April 2021
Documentation of Decision by NRC Staff That EPRI Report 3002012988, Alternative Approaches for Addressing Seismic Risk in 10 CFR 50.69 Risk-Informed Categorization, Meets Criteria for a Federal Record
ML20212L5772020-11-20020 November 2020
Memo to File: Environmental Assessment-Finding of No Significant Impact and NRC Financial Analysis for Constellation and Exelon Decommissioning Funding Plan Submitted in Accordance with 10 CFR 72.30(b) and (C) for Calvert Cliffs Nuclear Pow
ML19298C9722019-10-31031 October 2019
50.69 Apla SE Input L-2018-LLA-0482
ML17142A2382017-05-25025 May 2017
OEDO-17-00280 - Briefing Package for Drop-In Visit on June 9, 2017, by Senior Management of Exelon Generation Company, LLC with Chairman Svinicki, Commissioner Baran, and Commissioner Burns
ML16075A4562016-04-12012 April 2016
February 24, 2016, Summary of Meeting with Exelon Generation Company, LLC, to Discuss the Flaw Indication in the Calvert Cliffs Unit 1 Pressurizer Safety Valve Dissimilar Metal Weld
ML16088A2052016-03-28028 March 2016
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
ML16088A2042016-03-28028 March 2016
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
Notice of Forthcoming Meeting with Constellation Energy Nuclear Group, LLC,
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
Notice of Forthcoming Pre-Application Meeting with Constellation Energy Nuclear Group, LLC (MF2516 and MF2517)
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
ML13196A2202012-06-0606 June 2012
Memo from B. Balsam, NRR and D. Logan, NRR to J. Susco, NRR on Summary of Section 7 Consultation Activities Related to the National Marine Fisheries Service'S Final Rule to List the Atlantic Sturgeon
ML12136A5672012-05-17017 May 2012
Summary of Meeting with Constellation Energy to Discuss the Constellation Apparent Violation of NRC Regulations at Title 10 of the Code of Federal Regulations Part 50.9
ML12107A5052012-04-16016 April 2012
Forthcoming Category 1 Public Meeting with Constellation Energy Nuclear Group, LLC to Discuss Preliminary Enforcement
ML12073A2912012-03-13013 March 2012
Notice of Public Meeting with Constellation Energy Nuclear Group, LLC Regarding NRCs Assessment of Safety Performance at Calvert Cliffs Nuclear Power Plant
ML1131102432011-10-24024 October 2011
October 14, 2011, Summary of License Amendment Request (LAR) No. 10 Pre-Application Meeting with Calvert Cliffs Nuclear Power Plant, LLC, (TAC No. L24576)
ML1113206252011-05-17017 May 2011
Notice of Forthcoming Closed Meeting with Calvert Cliffs Nuclear Power Plant, LLC and Areva to Discuss Transition to Areva Fuel
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
ML0903701402009-02-0606 February 2009
Probabilistic Assessment of Flaw in Support of Calvert Cliffs Unit 2 Relief Request ISI-020
ML0833102772008-10-24024 October 2008
DHS, Calvert Cliffs Consultation Report
ML0809200582008-04-18018 April 2008
Summary of Phone Call with Licensees Concerning Sump Strainer Head Loss Testing
ML0807400842008-03-14014 March 2008
Draft Regulatory Guide for Comment
ML0706400412007-03-0606 March 2007
Commitment Lists for Renewed Operating License (ROL) Plants with No Commitment Appendix Attached to Its ROL Sers/Nuregs for Use with IP-71003
ML0617805592006-07-10010 July 2006
Revised Closeout Letter for Bulletin 2003-01, Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-Water Reactors.
ML0611101672006-04-21021 April 2006
Results of PTS Analysis of Calvert Cliffs Unit 1 to Post as Public Documents Into ADAMS
ML0525007022005-09-20020 September 2005
Closeout Letter for Bulletin 2003-01, Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-Water Reactors.
ML0524101502005-08-30030 August 2005
Summary of Telephone Conference on March 7, 2005, Regarding Steam Generator Tube Inspections, Calvert Cliffs Nuclear Power Plant, Unit No. 2
ML0503901492005-02-23023 February 2005
Response to Generic Letter 2004-01, Requirements for Steam Generator Tube Inspections
ML0433501182004-12-0303 December 2004
Reactor Oversight Process Midcycle Self - Assessment Performance Metrics
ML0336403322004-01-0606 January 2004
Correction of License Authority Files
ML0332900462003-12-11011 December 2003
Review of Revision 32 to the Updated Final Safety Analysis Report (UFSAR)
ML0327205272003-10-21021 October 2003
Plan and Schedule for Implementation of Staff Position on the Station Blackout (SBO) Issue
ML0314906662003-06-0303 June 2003
Summary of Meeting Held on May 13, 2003, Between the U.S. Nuclear Regulatory Commission (NRC) Staff and Calvert Cliffs Nuclear Power Plant, Inc., the Elimination of Offsite Review Committees
ML0310705002003-04-17017 April 2003
Basf, Radioactive Waste Manifests, Princeton and Ewing Sites, Dtd January 2001 to September 2002
ML0308404632003-04-0101 April 2003
Closure of TAC Nos. MB2437 and MB2438
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
[Table view] |
Text
April 4, 2002 MEMORANDUM TO: Joel Munday, Acting Chief, Section 1 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation FROM: Donna Skay, Project Manager, Section 1 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation
SUBJECT:
DOCUMENTATION OF CONFERENCE CALL TO CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NO. 1 ON MARCH 26, 2002, REGARDING REACTOR VESSEL HEAD INSPECTION ACTIVITIES (TAC NO. MB4533)
On March 26, 2002, the NRC staff had a conference call with Calvert Cliffs Nuclear Power Plant, Inc. (CCNPPI) to discuss the results of their reactor vessel head inspections for Unit 1 and potential impact of the Davis-Besse control rod drive mechanism (CRDM) inspection findings (see: NRC BULLETIN 2002-01, dated March 18, 2002.) During the March 26, 2002, call, CCNPPI addressed the following areas.
- 1. Inspection of the reactor vessel head: The licensee performed a qualified visual inspection of 100% of the nozzles on the vessel head underneath the insulation. These inspections were performed with a video probe. The licensee found some boric acid residue during the inspections but found no indication of degradation of the reactor vessel head.
- 2. History of boric acid leaks: The licensee stated that a leakage event in 1994 from instrumentation nozzle flanges left boric acid residue around two of the flanges. The residue was cleaned up during the current inspection. After removal of the residue, the licensee found no evidence of corrosion. This was the first bare metal inspection of the area since the leakage in 1994 and no additional leakage events have occurred since then.
In conclusion, the inspections of Calvert Cliffs, Unit 1 did not identify any degradation of the reactor vessel head similar to that observed at Davis-Besse. Based on the preliminary findings from Davis-Besse, the inspections performed by the licensee, and the licensee's susceptibility to nozzle cracking, the NRC staff did not identify any issues that needed additional follow-up prior to plant restart. The staff will document its formal review after receiving the licensee'sBulletin 2002-01 response.
Docket No. 50-317
MEMORANDUM TO: Joel Munday, Acting Chief, Section 1 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation FROM: Donna Skay, Project Manager, Section 1 /RA/
Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation
SUBJECT:
DOCUMENTATION OF CONFERENCE CALL TO CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NO. 1 ON MARCH 26, 2002, REGARDING REACTOR VESSEL HEAD INSPECTION ACTIVITIES (TAC NO. MB4533)
On March 26, 2002, the NRC staff had a conference call with Calvert Cliffs Nuclear Power Plant, Inc. (CCNPPI) to discuss the results of their reactor vessel head inspections for Unit 1 and potential impact of the Davis-Besse control rod drive mechanism (CRDM) inspection findings (see: NRC BULLETIN 2002-01, dated March 18, 2002.) During the March 26, 2002, call, CCNPPI addressed the following areas.
- 1. Inspection of the reactor vessel head: The licensee performed a qualified visual inspection of 100% of the nozzles on the vessel head underneath the insulation. These inspections were performed with a video probe. The licensee found some boric acid residue during the inspections but found no indication of degradation of the reactor vessel head.
- 2. History of boric acid leaks: The licensee stated that a leakage event in 1994 from instrumentation nozzle flanges left boric acid residue around two of the flanges. The residue was cleaned up during the current inspection. After removal of the residue, the licensee found no evidence of corrosion. This was the first bare metal inspection of the area since the leakage in 1994 and no additional leakage events have occurred since then.
In conclusion, the inspections of Calvert Cliffs, Unit 1 did not identify any degradation of the reactor vessel head similar to that observed at Davis-Besse. Based on the preliminary findings from Davis-Besse, the inspections performed by the licensee, and the licensee's susceptibility to nozzle cracking, the NRC staff did not identify any issues that needed additional follow-up prior to plant restart. The staff will document its formal review after receiving the licensee'sBulletin 2002-01 response.
Docket No. 50-317 DISTRIBUTION PUBLIC R. Laufer Sam Collins Brian Sheron D. Skay Jon Johnson Bill Kane S. Bloom Bill Borchardt M. Evans, RGI S. Little Mike Case PDI-1 Reading ACCESSION No. ML020910170 *See previous concurrence OFFICE PDI-1/PM PDI-/LA NRR/EMCB (A)SC:PDI-1 NAME DSkay SLittle SBloom* JMunday DATE 4/04/02 4/04/02 4/04/02 4/04/02 OFFICIAL RECORD COPY
