ML070860229

Susquehanna Steam Electric Station, Proposed License Amendment Re Constant Pressure Power Uprate - Supplement

ML070860229
Person / Time
Site:	Susquehanna
Issue date:	03/14/2007
From:	McKinney B T Susquehanna
To:	Document Control Desk, NRC/NRR/ADRO
References
PLA-6163
Download: ML070860229 (4)

Text

1 q Brltt T. McKInney Sr. Vice President

& Chief Nuclear Officer PPL Susquehanna, LLC 769 Salem Boulevard Berwick, PA 18603 Tel. 570.542.3149 Fax 570.542.1504 btmckinney@pplweb.com pp,' M MAR 1 4 1007 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Stop OP 1-17 Washington, DC 20555 SUSQUEHANNA STEAM ELECTRIC STATION PROPOSED LICENSE AMENDMENT NO. 285 FOR UNIT 1 OPERATING LICENSE NO. NPF-14 AND PROPOSED LICENSE AMENDMENT NO. 253 FOR UNIT 2 OPERATING LICENSE NO. NPF-22 CONSTANT PRESSURE POWER UPRATE -SUPPLEMENT PLA-6163 Docket Nos. 50-387 and 50-388

Reference:

1) PPL Letter PLA-6076, B. T. McKinney (PPL) to USNRC,"Proposed License Amendment Numbers 285for Unit 1 Operating License No. NPF-14 and 253for Unit 2 Operating License No. NPF-22 Constant Pressure Power Uprate, "dated October 11, 2006.Pursuant to 10 CFR 50.90, PPL Susquehanna LLC (PPL) requested in Reference 1 approval of amendments to the Susquehanna Steam Electric Station (SSES) Unit 1 and Unit 2 Operating Licenses (OLs) and Technical Specifications (TS) to increase the maximum power level authorized from 3489 megawatts thermal (MWt) to 3952 MWt, an approximate 13% increase in thermal power. The proposed Constant Pressure Power Uprate (CPPU) represents an increase of approximately 20% above the Original Licensed Thermal Power (OLTP).In a teleconference held February 21, 2007, the NRC staff requested PPL to submit a PPL evaluation of the proposed uprate conditions on the PPL Integrated Surveillance Program and upper shelf energy. The Enclosure contains the evaluation.

There are no new regulatory commitments associated with the submittal of these reports.4001 Document Control Desk PLA-6163 PPL has reviewed the "No Significant Hazards Consideration" and the "Environmental Consideration" submitted with Reference 1 relative to this supplemental information.

We have determined that there are no changes required to either of these documents.

If you have any questions or require additional information, please contact Mr. Michael H. Crowthers at (610) 774-7766.V B. T. cKinney

Enclosure:

PPL EPU Evaluation

-Integrated Surveillance Program and Upper Shelf Energy Copy: NRC Region I Mr. A. J. Blarney, NRC Sr. Resident Inspector Mr. R. V. Guzman, NRC Project Manager Mr. R. R. Janati, DEP/BRP PPL EPU Evaluation

-Integrated Surveillance Program and Upper Shelf Energy Enclosure to PLA-6163 Page 1 of 1 Integrated Surveillance Program (ISP)NRC has approved the Boiling Water Reactor Vessel and Intemals Project Integrated Surveillance Program (ISP) BWRVIP-86-A for implementation at PPL Susquehanna (SSES) Unit 1 and 2 (ML 030370431).

Pursuant to this program, SSES has performed fluence evaluations for both SSES Units at Extended Power Uprate (EPU) conditions utilizing the NRC approved RAMA Code in accordance with the guidelines of Regulatory Guide 1.190.SSES Unit 1 is a host plant for the ISP and therefore SSES has notified the Boiling Water Reactor Vessel Integrity Program (BWRVIP) ISP Project Manager of the impact the EPU will have on the capsule, as required by the program. Note that the Unit 1 1200 azimuth capsule is scheduled for removal in 2012 since the fluence on this capsule is estimated to be very close to the BWRVIP-86A Table 4-5 estimate target of 4.9E+ 1 7n/cm 2.Upper Shelf Enermy (USE)SSES has performed the USE evaluation considering EPU and License Renewal conditions for the SSES Units as required by BWRVIP-74-A.

The associated fluence evaluations utilized the NRC approved RAMA code methodology.

The USE evaluation results determine that the limiting beltline plate and welds for both SSES Units bound the BWRVIP-74-A equivalent margin analysis.

This indicates that the SSES Units have a percent reduction in Charpy USE that is less than limits derived by BWRVIP-74-A of 23.5% and 39% for the BWR/3-6 plates and welds, respectively.

This evaluation performed in accordance with BWRVIP-74-A also bounds the current license USE. The USE for the limiting plates and welds for the SSES Units meet the requirements of 10 CFR Part 50, Appendix G.