ML031820062

Meeting Handouts to Address the Staff'S Concerns About Use of S2M SBLOCA Methodology in the Unit 2 Power Uprate Application Dated 12/21/2001

ML031820062
Person / Time
Site:	Palo Verde
Issue date:	06/26/2003
From:	Donohew J NRC/NRR/DLPM/LPD4
To:
References
TAC MB3696
Download: ML031820062 (7)

Text

NRC FORM 658 U.S. NUCLEAR REGULATORY COMMISSION

(-1999)

TRANSMITTAL OF MEETING HANDOUT MATERIALS FOR IMMEDIATE PLACEMENT IN THE PUBLIC DOMAIN This form is to be filled out (typed or hand-printed) by the person who announced the meeting (i.e., the person who issued the meeting notice). The completed form, and the attached copy of meeting handout materlals, will be sent to the Document Control Desk on the same day of the meeting; under no circumstances will this be done later than the working day after the meeting.

Do not Include proprietarymaterials.

DATE OF MEETING The attached document(s), which was/were handed out in this meeting, is/are to be placed 06J26/2003 in the public domain as soon as possible. The minutes of the meeting will be issued in the near future. Following are administrative details regarding this meeting:

Docket Number(s) 50-528 Plant/Facility Name Palo Verde Nuclear Generating Station, Unit 2 TAC Number(s) (if available) TAC No. MB369,6 Reference Meeting Notice ML031710021 Purpose of Meeting (copy from meeting notice) The licensee requested the meeting to address the staff's concerns about use of S2M SBLOCA methodology in the Unit 2 power uprate application dated 12/21/2001.

NAME OF PERSON WHO ISSUED MEETING NOTICE TITLE Jack Donohew Senior Project Manager OFFICE Office of Nuclear Reactor Regulation DMSION Division of Licensing Project Management BRANCH Project Directorate IV Distribution of this form and attachments:

Docket File/Central File PUBLIC 71Fok NRC FORM 658 (9-1999) PRINTED ON RECYCLED PAPER This form was designed using InFornts

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APS/Westinghouse Meeting with NRC June 26, 2003 k,

• Background

-The S2M EM Generic TPopctal Report was approved by the NRC in December of 1997 for all CE PWR's without any Conditions or Limitations related to Core Power

-The NRC SER for the S2M EM- concluded the model provided "improved realism" while retaining "significant conservatism"

-The S2M EM is currently the licensing basis for all 3 PV units at 3876 MWt

-In fact, S2M is required to be used by the approved and implemented Zirlo topical

• Background

- The Unit 2 power uprate draft SER proposes a License Condition that would impose the S1 M EM at PVNGS on the basis that S2M has not been approved for power levels above 3400 MWt

- This proposal is contrary to NRC's approval of the S2M EM

- The NRC is using the PV docket and this licensing action to reopen the evaluation of an approved EM

- The proposed License Condition (workaround) in the Unit 2 power uprate draft SER creates a licensing basis problem for all 3 PV units not just PV Unit 2 Ad

• Background

- We do not see a clear success path through this problem if we are required to revert to SI M due to the complexities it introduces into our current licensing basis

- The power uprate SER would have to supersede previous License Amendment SERs as well as approved topical report SERs

• GOALS for this meeting

- Gain acceptance that the S2M Evaluation Model, as originally approved by the NRC in the existing SER, is not power level dependent and, as such, is applicable at 3990 MWt

- Obtain a mutually agreed upon schedule for a revision to the applicable section of the Power Uprate draft SER for PVNGS-2

• Success path for achieving stated goals

- The requested sensitivity calculations have been completed

- These demonstrate that the S2M hot rod heatup calculation is not uniquely impacted by variations in core power

- The NRC accepts the applicability of the S1 M to PVNGS-2 at 3990 MWt, and

- The blowdown hydraulics calculation for the S2M is essentially identical to that of the S1 M, therefore

- It is appropriately concluded that the S2M EM is applicable to a core power level of 3990 MWt