NRC 2013-0088, NextEra Energy Point Beach, LLC Preliminary Schedule for GSI-191 Resolution

NextEra Energy Point Beach, LLC Preliminary Schedule for GSI-191 Resolution

ML13275A282
Person / Time
Site:	Point Beach
Issue date:	09/30/2013
From:	Meyer L Point Beach
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GL 2004-02, NRC 2013-0088
Download: ML13275A282 (4)

Text

NEXTera ENERGY\/-" POINT BEACH September 30, 2013 NRC 2013-0088 GL 2004-02 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Point Beach Nuclear Plant, Units 1 and 2 Docket 50-266 and 50-301 Renewed License Nos. DPR-24 and DPR-27 NextEra Energy Point Beach, LLC Preliminary Schedule for GSI-1 91 Resolution

References:

1. NextEra Energy Point Beach, LLC letter to U.S. Nuclear Regulatory Commission, Resolution Option and Implementation Schedule for GSI-191 Closure, dated May 16, 2013 [ML13140A013]

2. U.S. Nuclear Regulatory Commission Generic Letter 2004-02: Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accident at Pressurized-Water Reactors, dated September 13, 2004 [ML042360586]

3. U.S. Nuclear Regulatory Commission, Closure Options for Generic Safety Issue - 191, Assessment of Debris Accumulation on Pressurized-Water Reactor Sump Performance, Commission Paper SECY-12-0093, dated July 9, 2012 [ML121310648]

By letter dated May 16, 2013 (Reference 1), NextEra Energy Point Beach, LLC (Point Beach) notified the U.S. Nuclear Regulatory Commission that Point Beach had selected Option 3 for resolution of Generic Safety Issue (GSI) 191 (Reference 2), in accordance with the Closure Options specified in Commission Paper SECY-12-0093 (Reference 3).

Option 3 is different regulatory treatment for suction strainer and in-vessel effects resolution.

In Reference 1, Point Beach committed to submit preliminary schedules for resolution of containment sump recirculation suction strainer performance and resolution of in-vessel effects. The preliminary schedules contain key milestone dates for resolution of the issues, and are provided in the enclosure to this letter.

NextEra Energy Point Beach, LLC, 6610 Nuclear Road, Two Rivers, Wl 54241 , ,

Document Control Desk Page 2 This letter contains no new regulatory commitments.

If you have any questions, please contact Mr. Michael Millen, Licensing Manager, at 920/755-7845.

I declare under penalty of perjury that the foregoing is true and correct.

Executed on September 30, 2013.

Very truly yours, NextEra Energy Point Beach, LLC Vice President Enclosure cc: Administrator, Region Ill, USNRC Resident Inspector, Point Beach Nuclear Plant, USNRC Project Manager, Point Beach Nuclear Plant, USNRC

ENCLOSURE NEXTERA ENERGY POINT BEACH, LLC POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2 NEXTERA ENERGY POINT BEACH, LLC PRELIMINARY GSI-191 RESOLUTION SCHEDULE 1 Introduction By letter dated May 16, 2013 (Reference 1), NextEra Energy Point Beach, LLC (Point Beach) notified the U.S. Nuclear Regulatory Commission that Point Beach had selected Option 3 for resolution of GSI-191, in accordance with the Closure Options specified in Commission Paper SECY-12-0093 (Reference 2). Option 3 is deterministic resolution for suction strainer blockage and risk-based resolution for in-vessel effects. In Reference 1, Point Beach committed to submit preliminary schedules for GSI-191 resolution that address both suction strainer and in-vessel effects resolution. The preliminary schedules are provided in this enclosure.

2 Milestone Schedules The preliminary schedules provided in this enclosure contain the major milestones for resolving the suction strainer performance using a deterministic resolution strategy and the major milestones for resolving the issue of in-vessel effects using a risk-based approach.

Table 1 presents the major milestones for deterministic resolution of suction strainer performance. Table 2 presents major milestones for resolution of in-vessel effects using a risk-based approach.

Table I Suction Strainer Deterministic Resolution MILESTONE MILESTONE DATE 1 Develop Containment CAD Model JAN 2014 Refine Debris Generation Analysis JUN 2014 Conduct strainer head loss testing SEP 2014 Analyze head loss test results DEC 2014 Perform additional head loss testing, if MAR 2015 necessary Submit NEI2 04-07 Exemption Request, if SEP 2015 necessary Approve Unit 1 modification package DEC 2016 Approve Unit 2 modification package MAR 2017 Install Unit 1 modifications DEC 2017 Install Unit 2 modifications NOV 2018 Milestone Dates are subject to change as implementation details are developed.

2 NEI 04-07 Exemption Request for use of Alternate Analysis Approach Page 1 of 2

Table 2 In-Vessel Effects Risk-Based Resolution MILESTONE MILESTONE DATE 1 Develop Containment CAD Model JAN 2014 Refine Debris Generation Analysis JUN 2014 Modify Plant PRA Model JUN 2014 Thermal Hydraulics modeling JUN 2015 Evaluate Boric Acid precipitation impact SEP 2015 Chemical Effects testing JAN 2016 Determine ACDF and ALERF MAR 2016 Submit License Amendment Request SEP 2016 Approve Unit 1 modification package DEC 2016 Approve Unit 2 modification package JUN 2017 Receive NRC Safety Evaluation SEP 2017 Install Unit 1 modifications 2 DEC 2017 Install Unit 2 modifications 2 NOV 2018 Install Unit 1 supplemental modifications3 JUN 2019 Install Unit 2 supplemental modifications 3 JUN 2020 1 Milestone Dates are subject to change as implementation details are developed.

2 Modifications identified in the License Amendment Request 3 Potential modifications identified during the License Amendment approval process 3 References

1. NextEra Energy Point Beach, LLC letter to U.S. Nuclear Regulatory Commission, Resolution Option and Implementation Schedule for GSI-191 Closure, dated May 16, 2013 [ML13140A013]

2. U.S. Nuclear Regulatory Commission, Closure Options for Generic Safety Issue - 191, Assessment of Debris Accumulation on Pressurized-Water Reactor Sump Performance, Commission Paper SECY-12-0093, dated July 9, 2012 [ML121310648]

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