Letter Sequence Meeting |
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Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance...
- Supplement, Supplement
Administration
- Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting
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MONTHYEARML0506900352005-03-0303 March 2005
Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors
Project stage: Request
ML0515100172005-05-31031 May 2005
Draft RAI on Response to Generic Letter 2004-02
Project stage: Draft RAI
ML0515303042005-06-0303 June 2005
6/3/05, Calvert Cliffs - RAI Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-Water Reactors
Project stage: RAI
ML0520200572005-07-15015 July 2005
Response to NRC Request for Additional Information Re NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors
Project stage: Response to RAI
ML0603803582006-02-0909 February 2006
RAI, Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design-Basis Accidents at Pressurized-Water Reactors
Project stage: RAI
ML0609500512006-04-12012 April 2006
Approval of Extension Request for Completion of Corrective Actions in Response to Generic Letter 2004-02
Project stage: Other
ML0618702222006-06-30030 June 2006
Update of Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Basis Accidents at Pressurized Water Reactors
Project stage: Other
ML0626405472006-09-20020 September 2006
Update of Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors
Project stage: Other
ML0633407022006-12-18018 December 2006
Unit No.1 - Approval of Extension Request for Completion of Corrective Action in Response to Generic Letter 2004-02
Project stage: Other
ML0712703722007-05-0202 May 2007
Revision to Generic Letter 2004-02 Response
Project stage: Other
ML0734504992007-12-10010 December 2007
Attachment (1) Request for Extension of the Completion Date for Corrective Actions Related to Generic Letter 2004-02
Project stage: Request
ML0734504982007-12-10010 December 2007
Request for Extension for Completion of Activities Related to Generic Letter 2004-02
Project stage: Request
ML0811307392008-04-22022 April 2008
Revision to Generic Letter 2004-02 Response
Project stage: Other
ML0817101052008-06-18018 June 2008
Attachment 1, Request for Extension of the Completion Date for Corrective Actions Related to Generic Letter 2004-02
Project stage: Request
ML0827404892008-09-30030 September 2008
Supplemental Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors
Project stage: Supplement
ML0827404972008-09-30030 September 2008
Attachment 2, ECCS and CS System Figures
Project stage: Other
ML0833003202008-12-0404 December 2008
Request for Additional Information Supplemental Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors-Calvert Cliffs Unit 1 & 2
Project stage: RAI
ML0906807672009-03-0404 March 2009
Request for Additional Information: Supplemental Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors
Project stage: Supplement
ML1009500782010-04-12012 April 2010
Request for Additional Information Generic Letter 2004-02 Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2-
Project stage: RAI
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
Project stage: Request
ML1014708982010-06-0707 June 2010
Summary of Meeting with Calvert Cliffs Nuclear Power Plant, LLC, to Discuss Supplement to Responses to Generic Letter 2004-02
Project stage: Meeting
ML1028701002010-09-30030 September 2010
Draft Responses to NRC Request for Additional Information Related to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents on Pressurized-Water..
Project stage: Draft Response to RAI
ML1029306502010-10-20020 October 2010
Notice of Forthcoming Conference Call with Duke Energy Carolinas, LLC Regarding McGuire Nuclear Station, Units 1 and 2 and Catawba Nuclear Station, Units 1 and 2,
Project stage: Other
ML1030810242010-11-10010 November 2010
Summary of November 1, 2010, Meeting with Duke to Discuss Responses to Generic Letter (GL) 2004-02 (Tac Nos. MC4673, MC4674, MC4692, and MC4693)
Project stage: Meeting
ML1031903612010-11-10010 November 2010
Response to Request for Additional Information Regarding Generic Letter 2004-02
Project stage: Response to RAI
ML12356A0852012-12-27027 December 2012
January 8, 2013 - Notice of Teleconference with Calvert Cliffs Nuclear Power Plant, LLC
Project stage: Meeting
ML13038A5432013-01-24024 January 2013
Chemical Effects Head Loss Experiment (Chle) Test Protocol for Calvert Cliffs Nuclear Power Plant (CCNPP-CHLE-002, Revision 0d)
Project stage: Request
ML13038A6042013-01-24024 January 2013
PIRT Item Summary
Project stage: Request
ML13038A4872013-01-24024 January 2013
CCNPP-CHLE-001, Revision 0c, Chemical Effects Head Loss Experiment (Chle) Test Plan for Calvert Cliffs Nuclear Power Plant
Project stage: Request
ML13038A5782013-01-24024 January 2013
Chemical Effects Pirt Considerations for Calvert Cliffs Nuclear Power Plant (CCNPP-CHLE-003, Revision 0b)
Project stage: Request
ML13086A5512013-01-24024 January 2013
MC4672 & MC4673 - CCNPP-CHLE-003, Rev 0c Chemical Effects PIRT Considerations Excerpts with Respect to GL2004-02, GSI-191
Project stage: Other
ML13030A3482013-02-0707 February 2013
Summary of Teleconference with Calvert Cliffs Nuclear Power Plant, Units 1 and 2 to Discuss Proposed Risk-Informed Approach to the Resolution of Generic LTR 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Des
Project stage: Meeting
ML13045A1822013-02-19019 February 2013
March 20, 2013, Notice of Forthcoming Teleconference with Calvert Cliffs and Nrc/Nrr Staff to Have Additional Discussions of Licenseess Proposed Path for Resolution of Generic Letter 2004-02
Project stage: Meeting
ML13050A5112013-02-19019 February 2013
MC4672-3 Corrected Notice -Public Meeting on March 20, 2013 Re-GL2004-02
Project stage: Request
ML13086A5502013-03-0101 March 2013
MC4672 & MC4673, CCNPP-CHLE-002, Rev 0e Chemical Effects Experimental Protocol with Respect to GL2004-02, GSI-191
Project stage: Request
ML13088A2202013-03-18018 March 2013
MC4672 & MC4673 - CCNPP-CHLE-005, Rev 1 Chemical Effects Autoclave Experimental Plan with Respect to GL2004-02, GSI-1 91
Project stage: Request
ML13086A5492013-03-20020 March 2013
MC4672 & MC4673 - Licensee Presentation-Category 1, Public Meeting on March 20, 2013 with Respect to GL2004-02, GSI-191
Project stage: Meeting
ML13091A0552013-04-10010 April 2013
Summary of Meeting on March 20, 2013, with Calvert Cliffs Nuclear Power Plant, LLC, to Discuss the Proposed Risk-Informed Approach to the Resolution of Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation D
Project stage: Meeting
ML13149A3942013-05-20020 May 2013
Chemical Effects Head Loss Experiment (Chle) Test Protocol for Calvert Cliffs Nuclear Power Plant, CCNPP-CHLE-002, Revision 0 May 20, 2013
Project stage: Request
ML13149A3992013-05-20020 May 2013
Chemical Effects Autoclave Experiment Test Plan for Calvert Cliffs Nuclear Power Plant CCNPP-CHLE-005, Revision 2, May 20, 2013
Project stage: Request
ML13149A4052013-05-23023 May 2013
Metals BENCH-TOP Autoclave Experiment Test Plan for Calvert Cliffs Nuclear Power Plant, CCNPP-CHLE-006, Revision 0, May 23, 2013
Project stage: Request
ML13148A3962013-05-29029 May 2013
Forthcoming Meeting with Calvert Cliffs Nuclear Power Plant, LLC to Discuss Licensees Proposed Plan for Resolution of GL 2004-02
Project stage: Meeting
ML13179A3132013-07-11011 July 2013
June 12, 2013 Summary of Meeting with Constellation Energy Group, Inc., to Continue Discussions on the Proposed Risk-Informed Approach to the Resolution of Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculati
Project stage: Meeting
ML13224A0942013-08-0606 August 2013
Chemical Effects PIRT Considerations for Calvert Cliffs Nuclear Power Plant, CCNPP-CHLE-003, Revision 0c
Project stage: Request
ML13224A1032013-08-0808 August 2013
CCNPP-CHLE-007, Revision 0c, Coatings Bench-Top Autoclave Experiment Test Plan for Calvert Cliffs Nuclear Power Plant
Project stage: Request
ML13226A0902013-08-14014 August 2013
Notice of Forthcoming Meeting with Constellation Energy Nuclear Group, LLC
Project stage: Meeting
ML13304B4032013-11-0101 November 2013
Notice of Forthcoming Meeting with Constellation Energy Nuclear Group, LLC,
Project stage: Meeting
ML13319A9392013-11-13013 November 2013
Ri GSI-191 November 2013 Meeting with NRC Rev 0
Project stage: Request
ML13310B9292013-12-0606 December 2013
Summary of Meeting with Constellation Energy Group, Inc., to Continue Discussions on the Proposed Risk-Informed Approach to the Resolution of Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During .
Project stage: Meeting
ML14014A0392014-01-29029 January 2014
Summary of Meeting with Constellation Energy Group, Inc., to Continue Discussions on the Proposed Risk-Informed Approach to the Resolution of Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During
Project stage: Meeting
2010-06-07
[Table View] |
Text
LICENSEE:
FACILITY:
SUBJECT:
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 January 29, 2014 Calvert Cliffs Nuclear Power Plant, LLC Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2
SUMMARY
OF NOVEMBER 13,2013, MEETING WITH CONSTELLATION ENERGY GROUP, INC., TO CONTINUE DISCUSSIONS ON THE PROPOSED RISK-INFORMED APPROACH TO THE RESOLUTION OF GENERIC LETTER 2004-02, "POTENTIAL IMPACT OF DEBRIS BLOCKAGE ON EMERGENCY RECIRCULATION DURING DESIGN BASIS ACCIDENTS AT PRESSURIZED-WATER REACTORS" WITH A FOCUS ON ONGOING CHEMICAL EFFECTS TESTING AND EARLY RESULTS (TAC NOS. MC4672 AND MC4673)
On November 13, 2013, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Constellation Energy Group, Inc., the licensee, at NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. The purpose of the meeting was to discuss the licensee's proposed risk-informed approach to the resolution of Generic Letter (GL) 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation during Design Basis Accidents at Pressurized-Water Reactors" with a focus on ongoing chemical effects testing and early results for Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2. The meeting notice and agenda, dated November 1, 2013, is available in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML13304B403. A list of attendees is provided in the Enclosure, but may not be all inclusive.
The licensee discussed (1) preliminary autoclave test results; (2) chemical effects phenomena identification and ranking table issues; (3) chemical effects testing: Alkyd Autoclave Test Plan-CCNPP-CHLE-007, Zinc Consideration-CCNPP-CHLE-008, Marinite Consideration-CCNPP-CHLE-009, and Integrated Chemical Effects Head Loss Loop Design; (4) Small-Scale Bypass Test Plan-CCNPP-BPPian-002; and (5) future periodic meetings. (See ADAMS Accession No. ML13319A939).
The licensee clarified to the staff that the objective of the meeting is to obtain a common understanding on the test parameters for the chemical effects testing. The staff suggested to the licensee that the determination on whether test results are successful should be based on clearly defined acceptance criteria.
Slide 5: The licensee noted that the preliminary test results from" CCNPP-CHLE-006 -
Metals" testing showed high concentrations of calcium and zinc at levels of approximately 20 parts per million (ppm) and 6 ppm, respectively. The licensee stated that it is re-evaluating how it will scale Marinite insulation and inorganic zinc (IOZ) coatings to produce more realistic amounts of debris in the tests. The licensee indicated that the "CCNPP-CHLE-006 - Metals" testing is mainly being conducted to determine what metals to include or exclude from large scale testing. The licensee stated that the primary focus of the "CCNP-CHLE-005-High Temperature" test is to compare test data from tests that are initiated at 286 oF with data from testing initiated at 195 °F. The intent is to determine if testing using a lower temperature profile, potentially over a longer time period, can adequately simulate the dissolution of materials that would occur at the plant's limiting temperature profile.
Slide 7: The licensee noted that during preparation of the alkyd coating coupons, application of the primer coating on the stainless steel coupon was challenging.
Slide 8: The licensee clarified that plates of zinc will be used to simulate unqualified IOZ coatings located in the zone of influence during accident conditions. It was further stated that stainless steel coupons coated with IOZ will simulate degraded qualified IOZ coating.
Slide 9: The licensee indicated that it is removing excessive conservatism from the calculation of Marinite surface area by using more realistic particle diameters.
The licensee stated that this change will reduce the amount of Marinite by approximately 95 percent from the initial screening test.
The licensee stated that it plans to begin preliminary large scale testing in early 2014 at the Alden Labs. The licensee expressed interest in meeting with NRC staff during the December-January time frame to discuss results of further testing.
The licensee procedure for performing sensitivity testing for fiber bypassing the sump strainer was discussed. The licensee provided an updated procedure for the NRC staff review. The procedure is for small-scale testing and will be used to direct sensitivity testing for water temperature, water chemistry, and debris mix. A larger facility is planned to be used to determine sensitivity to flow velocity and debris quantity/concentration. The NRC staff stated that debris preparation and introduction should be controlled to ensure that realistic fibrous debris reaches the strainer during testing.
Members of the public were not in attendance. Public Meeting Feedback forms were not received.
Please direct any inquiries to me at 301-415-1016, or Nadiyah.Morgan@nrc.gov.
Docket Nos. 50-317 and 50-318
Enclosure:
List of Attendees cc w/encl: Distribution via Listserv 1yah S. Morgan, Project Manager Pant Licensing Branch 1-1 Division of Operating Reactor licensing Office of Nuclear Reactor Regulation
LIST OF ATTENDEES NOVEMBER 13,2013, MEETING WITH CONSTELLATION ENERGY GROUP, INC.
ONGOING CHEMICAL EFFECTS TESTING IN RISK-INFORMED GL 2004-02 RESOLUTION CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 I NAME
~ ~-- -~~--- ~--- ~--~~- ~
1 Nadiyah Morgan
. Aloysius Obodoako Bob Peterson
- Blake Stair Kip Walker Maurice Dingler Tim Sande Arianna Plant Work Management Inc.
fEnercon Services, Inc.
CENG
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MPR Associates, Inc.
-~-----~~--~~---~--~-*~---~.
~~
1 CENG MPR Associates, Inc.
1 Sargent & Lundy, LLC Enercon Services, Inc.
Enclosure
- ML14014A039 OFFICE DORULPLI-1/PM NAME NMorgan DATE 1/15/2014 RidsNrrLAKGoldstein RidsRgniMaliCenter JStang, NRR PKiein, NRR MYoder, NRR SSmith, NRR DORULPLI-1/LA KGoldstein 1/15/2014 Ira/
Nadiyah S. Morgan, Project Manager Plant Licensing Branch 1-1 Division of Operating Reactor licensing Office of Nuclear Reactor Regulation DE/ESGB/BC GKulesa 1/27/2014 TWertz, NRR BRini, EDO Region I RidsNrrDeEsgb AObodoako, NRR RidsNrrDssSsib DSS/SSIB/BC JStang 1/29/2014 DORULPLI-1/BC BBeasley 1/29/2014
