ML071020343

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

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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-

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Creation Date From: Created By: 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: Expiration Date: Notify Recipients:

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Status Tracking: Size 669 522 13312 No None Yes Standard No None No Standard Immediate Delivered 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 Welds* 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.