ML081680151
| ML081680151 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 06/13/2008 |
| From: | Lahti L Entergy Nuclear Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML081680151 (3) | |
Text
sighEntergy June 13, 2008 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Palisades Nuclear Plant Docket 50-255 License No. DPR-20 Annual Report of Changes in Emergency Core Cooling System Models
Dear Sir or Madam:
10 CFR 50.46 Entergy Nuclear Operations, Inc. is submitting the annual report of changes in the emergency core cooling system (ECCS) models for the Palisades Nuclear Plant. The report is submitted in accordance with 10 CFR 50.46(a)(3)(ii). contains the large break loss of coolant accident peak cladding temperature summary. contains the small break loss of coolant accident peak cladding temperature summary.
This report covers the period from June 14, 2007, through June 13, 2008.
Summary of Commitments This letter contains no new commitments and no revisions to existing commitments.
^" J^11'-L Laurie A. Lahti Licensing Manager Palisades Nuclear Plant Enclosures (2)
Entergy Nuclear Operations, Inc.
Palisades Nuclear Plant 27780 Blue Star Memorial Highway Covert, Ml 49043 Tel 269 764 2000 CC Administrator, Region III, USNRC Project Manager, Palisades, USNRC Resident Inspector, Palisades, USNRC
ENCLOSURE 1 LARGE BREAK LOSS OF COOLANT ACCIDENT PEAK CLADDING TEMPERATURE
SUMMARY
APCT
°F)
PCT (°F)
PCT (Last Acceptable Model Results) 1929 10 CFR 50.46 Changes CR 9266 Error In Break Loop SG Exit Junction Inertia
+1 CR 9429 Error In Fast Flux In p ut To RODEX2
+4 PCT (2001 Annual Report) 1934 10 CFR 50.46 Changes CR 9156 Error In TOODEE2 Clad Thermal Expansion
-1 CR 8674 RFPAC V&V Findin gs From CDUP
+28 PCT (2002 Annual Report) 1961 PCT (2003 Annual Report) 1961 PCT (2004 Annual Report) 1961 PCT (2005 Annual Report) 1961 10 CFR 50.46 Changes CR 2005-4791 Large Break LOCA Containment Heat Sink Modeling In puts
-5 1956 CR 2006-585 Incorrect ICECON Heat Structure Input for Palisades Appendix K LBLOCA
-41 1915 PCT (2006 Annual Report) 1915 PCT (2007 Annual Report) 1915 PCT (2008 Annual Report) 1915 Page 1 of 1
ENCLOSURE 2 SMALL BREAK LOSS OF COOLANT ACCIDENT PEAK CLADDING TEMPERATURE
SUMMARY
t1PCT
°F PCT (°F)
PCT (Last Acceptable Model Results) 1465 PCT (2003 Annual Report) 1465 PCT (2004 Annual Re ort) 1465 PCT (2005 Annual Report) 1465 10 CFR 50.46 Chan es CR 2006-1178-FA SBLOCA Core Exit Modeling
-2 1463 PCT (2006 Annual Report) 1463 PCT (2007 Annual Report) 1463 10 CFR 50.46 Changes CR 2007-5220 Legacy Fortran Programming Issues with Point Kinetics in RELAP5 Based Com puter Codes
-8 1455 PCT (2008 Annual Report) 1455 Page 1 of 1