ML18030A382

Forwards Revs to Util 930612 Power Uprate W/Increased Flow Submittal.Lhgr Reduction of 0.70 Will Be Imposed During Single Loop Operation,Based on Discussions W/Ge.Proprietary Sections of NEDC-32071P Encl.Encl Withheld

ML18030A382
Person / Time
Site:	Susquehanna
Issue date:	04/02/1993
From:	Byram R PENNSYLVANIA POWER & LIGHT CO.
To:	Chris Miller Office of Nuclear Reactor Regulation
Shared Package
ML17157C275	List: ML17157C274 ML18030A382
References
PLA-3948, NUDOCS 9304090262
Download: ML18030A382 (6)

Text

Pennsylvania Power 8 Light Company Two North Ninth Street~Allentown, PA 18101-1179 ~ 215/774-5151 APR 08 1993 Robert G. Byram Senior Vice President-Nuclear 215/774-7502 Director of Nuclear Reactor Regulation Attention: Mr. C.L. Miller, Project Director Project Directorate I-2 Division of Reactor Projects U.S. Nuclear Regulatory Commission Washington, D.C. 20555 SUSQUEHANNA STEAM ELECTRIC STATION REVISIONS TO PPAL POWER UPRATE SUBMITTAL Docket Nos. 50-387 PLA-3948 FILES A17-2/R41-2/PSS-1 and 50-3S8

Reference:

PLA-3788, H.W. Keiser to C.L. Miller, "Subnuttal ofLicensing Power Uprate With Increased Core Flow," dated June 15, 1992.

Dear Mr. Miller:

The purpose of this letter is to submit revisions of the referenced PP&L submittal on Power Uprate for Susquehanna SES Units l and 2. These revisions are in response to a question raised by Mr. T. Collins and Mr. M. Razzaque (NRR/SRXB). Specifically, PP&L was asked to reconcile the fact that the SAFER/GESTR LOCA analysis Peak Clad Temperature (PCT) results for Single Loop Operation (SLO) are higher than those presented for two loop operation, and no statistical analysis of the Upper Bound PCT had been provided for this case.

PP&L has reviewed this question with General Electric, and has decided to impose a LHGR reduction (multiplier) of 0.70 during SLO. Based on this reduction, the calculated SLO Licensing Basis PCT and Upper Bound PCT are lower than their respective values for two loop operation.

In order to document this change, PP&L is providing the following revisions to the referenced Power Uprate submittal:

~ Revised pages to the GE SAFER/GESTR LOCA Report (NEDC-32071P) to reflect the revised analysis and results.

~ A revised Technical Specification Markup to reflect the LHGR multiplier during SLO.

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FILES A17-2/R41-2/ PLA-3948 P88-1 Mr. C. L. Miller

~ In the PP&L LTR, NRC questions posed to Detroit Edison were responded to as though they had been asked of PP&L. A revision to the PP&L response to this particular question is provided.

A formal License Amendment submittal continues to be in preparation in support of Unit 2 Cycle 7 (May, 1994) implementation. PP&L's current forecast for this submittal continues to be the 4th quarter of 1993.

The enclosed page changes should be inserted into the reference in accordance with the attached instructions. Any questions on this submittal should be directed to Mr. R. R. Sgarro at (215) 774-7914.

Very truly yours, Attachments CC: BRC-Document-Coantro -Desk (original)

NRC Region I Mr. G. S. Barber, NRC Sr. Resident Inspector - SSES Mr. R. J. Clark, NRC Sr. Project Manager - Rockville Mr. R. J. Stransky, Jr., NRC Power Uprate Project, OWFN Mr. M. M. Razzaque, NRR/SRXB, OWFN

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INSERT AND REMOVE INSTRUCTIONS Please update the following Sections of PP &L's june 15, 1992 Power Uprate Submittal using the attached revised pages in accordance with the following instructions:

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~ GE SAFER/GESTR - LOCA REPORT (NEDC - 32071P)

See attached GE Errata and Addenda Sheet

~ TECHNICAL SPECIFICATION HARKUPS REMOVE INSERT 3/4 4-1c 3/4 4-1 c

~ RESPONSE TO NRC QUESTIONS REMOVE INSERT Reactor Systems Branch Question 3 Reactor Systems Branch Question 3

GE SAFElUGESTR - LOCA REPORT NEDC - 32071P