ML071020343

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E-MAIL: (PD) Revised Draft ACRS Fluence Slides
ML071020343
Person / Time
Site: Pilgrim
Issue date: 03/29/2007
From: Perry Buckberg
NRC/NRR/ADRO
To: Lois L, Matthew Mitchell
NRC/NRR/ADES
References
TAC MD3698
Download: ML071020343 (6)


Text

Page 1 of 1 Perry Buckberg - Fwd: Revised DARFT ACRS Fluence Slides From:

Perry Buckberg To:

Lambros Lois; Matthew Mitchell Date:

3/29/2007 7:31 AM

Subject:

Fwd: Revised DARFT ACRS Fluence Slides CC:

Christopher Sydnor FYI - Revised fluence slides from Entergy Perry

>>> "Ford, Bryan" <BFord@entergy.com> 3/28/2007 4:27 PM >>

FYI file://C:\\temp\\GW 100001.HTM 3/30/2007

ctrn\\W)00004.TMP-Mail Envelope Properties (460BA3AC.726 : 9: 8248)

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Fwd: Revised DARFT ACRS Fluence Slides 3/29/2007 7:31:56 AM Perry Buckberg PHB1@nfrc.gov Recipients nrc.gov TWGWPOO1.HQGWDO01 AM LXL1 (Lambros Lois)

MAM4 (Matthew Mitchell) nrc.gov TWGWPO02.HQGWDO01 AM CRS CC (Christopher Sydnor)

Post Office TWGWPO01.HQGWDO01 TWGWPO02.HQGWDO01 Action Delivered Date & Time 3/29/2007 7:32:01 Delivered 3/29/2007 7:32:01 Delivered Route 3/29/2007 7:32:01 AM 3/29/2007 7:32:01 AM Date & Time 3/29/2007 7:31:55 AM 3/29/2007 7:30:58 AM nrc.gov nrc.gov Files MESSAGE TEXT.htm UNTITLED.PPT Options Auto Delete:

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Reactor Vessel Neutron Fluence 01 4.2

  • Lack of benchmarking data to support plant specific fluence calculations TLAAs for use in

Reactor Vessel Neutron Fluence Current Licensing Basis 10 CFR 50 App. G requirement for current operation

- Current P-T curves valid through Cycle 18 (2011 RFO)

- Commitment to Submit Action Plan for Resolution by September 15, 2007

- Commitment to submit RG 1.190 calculations by June 8, 2010

Reactor Vessel Neutron Fluence Current Actions Evaluate TLAAs to determine limiting Fluence 9 Limiting Beltline Adjusted Reference Temperature e Upper Shelf Energy e RPV Internals

  • RPV nozzles near beltline

- Core Shroud Fluence Limiting based on BWRVIP-35 Limiting Fluence values will not be challenged

Reactor Vessel Neutron Fluence Future Actions

- Benchmark Computer Code using Pilgrim or other BWR3 Dosimetry Data Previous commitment to submit action plan by September 15, 2007

- License Condition to submit calculations consistent with RG 1.190 by June 8, 2010 which demonstrate limiting fluence values will not be reached during period of extended operation.