ML092370657

Summary of Conference Call with Entergy Operations, Inc. on Draft Response to the RAI for GL 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis

ML092370657
Person / Time
Site:	Arkansas Nuclear
Issue date:	09/03/2009
From:	Kalyanam N Plant Licensing Branch IV
To:	Office of Nuclear Reactor Regulation
Kalyanam N, NRR/DLPM, 415-1480
References
GL-04-002, TAC MC4663, TAC MC4664
Download: ML092370657 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 September 3, 2009 LICENSEE:

Entergy Operations, Inc.

FACILITY:

Arkansas Nuclear One, Units 1 and 2 (ANO-1 and ANO-2)

SUMMARY

OF JULY 16, 2009, CONFERENCE CALL WITH ENTERGY OPERATIONS, INC. ON DRAFT RESPONSE TO THE REQUEST FOR ADDITIONAL INFORMATION (RAI) FOR GENERIC LETTER (GL) 2004-02, "POTENTIAL IMPACT OF DEBRIS BLOCKAGE ON EMERGENCY RECIRCULATION DURING DESIGN BASIS ACCIDENTS AT PRESSURIZED WATER REACTORS," (TAC NOS. MC4663 AND MC4664)

On July 16, 2009, a Category 1 conference call was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Entergy Operations, Inc. (Entergy, the licensee).

The purpose of the call was to discuss the draft response to the RAI for GL 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation during Design Basis Accidents at Pressurized Water Reactors" sent to the licensee on June 22, 2009 (ADAMS Accession No. ML091730285), provide feedback on the licensee's plans and discuss any points of disagreements and discuss the licensee's path forward.

Members of the public were not in attendance. Other Entergy representatives of Palisades Nuclear Plant and Waterford Steam Electric Station, Unit 3, and the licensee contractor were on the call. Enclosed is a list of attendees.

The NRC staff requested the licensee to expand its response to questions A12 and B18 regarding the stainless steel divider plates installed between the two halves of the sump, and to provide the technical basis for concluding that blockage would not occur at this plate.

Regarding ANO-2, the NRC staff questioned the reliance on the zone of influence (ZOI) reduction (RAls B2 and B3a) and suggested that the licensee evaluate how it might be avoided.

Please direct any inquiries to me at 301-415-1480, or kaly.kalyanam@nrc.gov.

~

N. Kaly Kalyanam, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-313 and 50-368

Enclosure:

List of Attendees cc w/encl: Distribution via Listserv

LIST OF ATrENDEES JULY 16, 2009, CONFERENCE CALL WITH ENTERGY OPERATIONS, INC.

ARKANSAS NUCLEAR ONE. UNITS 1 AND UNIT 2 DRAFT RESPONSE TO THE REQUEST FOR ADDITIONAL INFORMATION FOR GENERIC LETTER 2004-02. "POTENTIAL IMPACT OF DEBRIS BLOCKAGE ON EMERGENCY RECIRCULATION DURING DESIGN BASIS ACCIDENTS AT PRESSURIZED WATER REACTORS" Entergy Operations. Inc.

Bryan Daiber Mark Harris Billy Butler Natalie Mosher George Goralski Greg Ferguson Iver Jacobson (Contractor)

Nuclear Regulatory Commission Stewart Bailey, NRRlSSIB John Lehning, NRRlSSIB Steven Smith, NRRlSSIB George Thomas, NRRlEMCB Robert Torres, NRRlSSIB Michael Scott (Part time), NRRlSSIB N. Kalyanam, NRRlDORL Enclosure

September 3, 2009 LICENSEE:

Entergy Operations, Inc.

FACILITY:

Arkansas Nuclear One, Units 1 and 2 (ANO-1 and ANO-2)

SUMMARY

OF JULY 16, 2009, CONFERENCE CALL WITH ENTERGY OPERATIONS, INC. ON DRAFT RESPONSE TO THE REQUEST FOR ADDITIONAL INFORMATION (RAI) FOR GENERIC LETTER (GL) 2004-02, "POTENTIAL IMPACT OF DEBRIS BLOCKAGE ON EMERGENCY RECIRCULATION DURING DESIGN BASIS ACCIDENTS AT PRESSURIZED WATER REACTORS," (TAC NOS. MC4663 AND MC4664)

On July 16, 2009, a Category 1 conference call was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Entergy Operations, Inc. (Entergy, the licensee).

The purpose of the call was to discuss the draft response to the RAI for GL 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation during Design Basis Accidents at Pressurized Water Reactors" sent to the licensee on June 22, 2009 (ADAMS Accession No. ML091730285), provide feedback on the licensee's plans and discuss any points of disagreements and discuss the licensee's path forward.

Members of the public were not in attendance. Other Entergy representatives of Palisades Nuclear Plant and Waterford Steam Electric Station, Unit 3, and the licensee contractor were on the call. Enclosed is a list of attendees.

The NRC staff requested the licensee to expand its response to questions A12 and B18 regarding the stainless steel divider plates installed between the two halves of the sump, and to provide the technical basis for concluding that blockage would not occur at this plate.

Regarding ANO-2, the NRC staff questioned the reliance on the zone of influence (ZOI) reduction (RAls B2 and B3a) and suggested that the licensee evaluate how it might be avoided.

Please direct any inquiries to me at 301-415-1480, or kaly.kalyanam@nrc.gov.

/raj N. Kaly Kalyanam, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-313 and 50-368

Enclosure:

List of Attendees cc w/encl: Distribution via Listserv DISTRIBUTION:

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