RNP-RA/06-0106, Supplemental Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors.

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Supplemental Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors.
ML063190401
Person / Time
Site: Robinson Duke Energy icon.png
Issue date: 11/07/2006
From: Lucas J
Progress Energy Carolinas
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
GL-04-002, RNP-RA/06-0106
Download: ML063190401 (3)
v • d • e


Text

10 CFR 50.54(f)

SProgress Energy Serial: RNP-RA/06-0106 NOV 0-7 2006 United States Nuclear Regulatory Commission ATTN: Document Control Desk 11555 Rockville Pike Rockville, Maryland 20852 H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-26 1/LICENSE NO. DPR-23 SUPPLEMENTAL RESPONSE TO NRC GENERIC LETTER 2004-02, "POTENTIAL IMPACT OF DEBRIS BLOCKAGE ON EMERGENCY RECIRCULATION DURING DESIGN BASIS ACCIDENTS AT PRESSURIZED-WATER REACTORS" Ladies and Gentlemen:

By letter dated September 1, 2005, Carolina Power and Light Company, also known as Progress Energy Carolinas, Inc., provided information requested by NRC Generic Letter (GL) 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors," for H. B. Robinson Steam Electric Plant, Unit No. 2. A supplemental response was provided by letter dated July 13, 2006, which provided a revision to the planned schedule for completion of downstream effects evaluations.

That letter revised the plan for completion of downstream effects evaluations, as follows:

"The downstream effects evaluations will be completed for the reactor internals/fuel and SI

[Safety Injection] pump internal flow passages by November 7, 2006."

The evaluations associated with downstream effects are in progress. It is expected that these evaluations will be completed prior to completion of the next refueling outage, which is currently scheduled to begin on about April 7, 2007. Therefore, the plan for these evaluations is further revised, as follows:

"The downstream effects evaluations will be completed for the reactor internals/fuel and SI pump internal flow passages by May 1, 2007."

The new planned date for this intermediate step -will continue to allow completion of necessary activities for. resolution of the debris blockage issue by December 31, 2007, as requested by GL 2004-02.

Progress Energy Carolinas, Inc.

Robinson Nuclear Plant 3581 West Entrance Road Hartsville, SC 29550

United States Nuclear Regulatory Commission Serial: RNP-RA/06-0106 Page 2 of 2 An attachment to this letter provides an Affirmation in accordance with the provisions of Section 182a of the Atomic Energy Act of 1954, as amended, and 10 CFR 50.54(f).

If you have any questions concerning this matter, please contact Mr. C. T. Baucom at (843) 857-1253.

Sincerely, Jan . uca Manager - Support Services - Nuclear CTB/cac Attachment c: Dr. W. D. Travers, NRC, Region II Mr. C. P. Patel, NRC, NRR NRC Resident Inspector

United States Nuclear Regulatory Commission Attachment to Serial: RNP-RA/06-0106 Page 1 of I AFFIRMATION The information contained in letter RNP-RA/06-0106 is true and correct to the best of my information, knowledge, and belief; and the sources of my information are officers, employees, contractors, and agents of Carolina Power and Light Company, also known as Progress Energy Carolinas, Inc. I declare under penalty of perjury that the foregoing is true and correct.

Executed On: /r)

T. D. Walt Vice President H. B. Robinson Steam Electric Plant, Unit No. 2

Text

10 CFR 50.54(f)

SProgress Energy Serial: RNP-RA/06-0106 NOV 0-7 2006 United States Nuclear Regulatory Commission ATTN: Document Control Desk 11555 Rockville Pike Rockville, Maryland 20852 H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-26 1/LICENSE NO. DPR-23 SUPPLEMENTAL RESPONSE TO NRC GENERIC LETTER 2004-02, "POTENTIAL IMPACT OF DEBRIS BLOCKAGE ON EMERGENCY RECIRCULATION DURING DESIGN BASIS ACCIDENTS AT PRESSURIZED-WATER REACTORS" Ladies and Gentlemen:

By letter dated September 1, 2005, Carolina Power and Light Company, also known as Progress Energy Carolinas, Inc., provided information requested by NRC Generic Letter (GL) 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors," for H. B. Robinson Steam Electric Plant, Unit No. 2. A supplemental response was provided by letter dated July 13, 2006, which provided a revision to the planned schedule for completion of downstream effects evaluations.

That letter revised the plan for completion of downstream effects evaluations, as follows:

"The downstream effects evaluations will be completed for the reactor internals/fuel and SI

[Safety Injection] pump internal flow passages by November 7, 2006."

The evaluations associated with downstream effects are in progress. It is expected that these evaluations will be completed prior to completion of the next refueling outage, which is currently scheduled to begin on about April 7, 2007. Therefore, the plan for these evaluations is further revised, as follows:

"The downstream effects evaluations will be completed for the reactor internals/fuel and SI pump internal flow passages by May 1, 2007."

The new planned date for this intermediate step -will continue to allow completion of necessary activities for. resolution of the debris blockage issue by December 31, 2007, as requested by GL 2004-02.

Progress Energy Carolinas, Inc.

Robinson Nuclear Plant 3581 West Entrance Road Hartsville, SC 29550

United States Nuclear Regulatory Commission Serial: RNP-RA/06-0106 Page 2 of 2 An attachment to this letter provides an Affirmation in accordance with the provisions of Section 182a of the Atomic Energy Act of 1954, as amended, and 10 CFR 50.54(f).

If you have any questions concerning this matter, please contact Mr. C. T. Baucom at (843) 857-1253.

Sincerely, Jan . uca Manager - Support Services - Nuclear CTB/cac Attachment c: Dr. W. D. Travers, NRC, Region II Mr. C. P. Patel, NRC, NRR NRC Resident Inspector

United States Nuclear Regulatory Commission Attachment to Serial: RNP-RA/06-0106 Page 1 of I AFFIRMATION The information contained in letter RNP-RA/06-0106 is true and correct to the best of my information, knowledge, and belief; and the sources of my information are officers, employees, contractors, and agents of Carolina Power and Light Company, also known as Progress Energy Carolinas, Inc. I declare under penalty of perjury that the foregoing is true and correct.

Executed On: /r)

T. D. Walt Vice President H. B. Robinson Steam Electric Plant, Unit No. 2

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