PNP 2014-032, Annual Report of Changes in Emergency Core Cooling System Models 041014

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Annual Report of Changes in Emergency Core Cooling System Models 041014
ML14104A882
Person / Time
Site: Palisades Entergy icon.png
Issue date: 04/10/2014
From: Gustafson O
Entergy Nuclear Operations
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
PNP 2014-032
Download: ML14104A882 (4)


Text

  • --Entergy

~ Entergy Palisades Nuclear Plant 27780 Blue 27780 Covert, Star Memorial Blue Star Covert, MI Ml 49043 269 764 2000 2697642000 49043 Inc.

Entergy Nuclear Operations, Inc.

Memorial Highway Highway Otto W.

Otto W. Gustafson Gustafson Director, Regulatory and Director, Regulatory and Performance Improvement Performance Improvement 201 4-032 PNP 2014-032 April 10, 2014 10 CFR 50.46 U. S. Nuclear Regulatory Commission AATTN:

TIN: Document Control Desk Washington, DC 20555-0001

Subject:

Annual Report of Changes in Emergency Core Cooling System Models Palisades Nuclear Plant Docket 50-255 License No. DPR-20

Reference:

1. Letter dated March 12, 2014, from L.W.Newman, AREVA, to Melissa Driscoll, Entergy Operations, Inc, "AnnuaI10CFR50.46 Annual IOCFR5O.46 Reporting for Palisades Palisades"

Dear Sir or Madam:

Nuclear Operations, Inc. (ENO) is submitting the annual report of changes in Entergy Nuclear the emergency core cooling system (ECCS) models for the Palisades Nuclear Plant (PNP). The report is submitted in accordance with 10 10 CFR 50.46(a)(3)(ii).

Reference I1 identifies identifies an issue issue with the AREVA S-RELAP5 routine associated with with the RODEX3a fuel rod model. This issue issue impacted the PNP large large break loss loss of coolant accident (LBLOCA) analysis. END ENO does not consider LBLOCA reanalysis necessary because the identified issue results in aa small peak cladding temperature (PCT) change for the LBLOCA analysis, as summarized in Attachment 1. 1.

Attachment I1 contains the LBLOCA PCT summary. Attachment 22 contains the small break loss of coolant accident (SBLOCA) loss of PCT summary.

(SBLOCA) PCT summary. This report report covers the period from January 1, 2013, through December January 1, 2013, through December 31, 2013.

31, 2013.

PNP 2014-032 PNP 2014-032 Document Control Document Control Desk Desk Page 22 Page letter contains This letter contains no no new new commitments commitments and and no no revisions revisions to existing commitments.

to existing commitments.

Sincerely, Sincerely, OWG/bed : Large Break Loss of Coolant Accident Peak Cladding Temperature Summary : Small Break Loss of Coolant Accident Peak Cladding Temperature Summary CC Ill, USNRC Administrator, Region III, Project Manager, Palisades, USNRC Resident Inspector, Palisades, USNRC

ATTACHMENT 1I LARGE BREAK BREAK LOSS OF COOLANT ACCIDENT PEAK CLADDING TEMPERATURE

SUMMARY

aPCT tPCT (OF)

(°F) PCT PCT (OF)

(°F)

PCT (Last Acceptable Model Results) New Cycle PCT Cycle 21 Analysis 1740 1740 Changes CFR 50.46 Changes 10 CFR CR 2009-337 S-RELAP5 Radiation to Fluid Fluid Correlation Under -27 1713 Radiative Heat Predicts the Radiative Heat Transfer PCT (2009 Annual Report) 1713 10 CFR 50.46 Changes CR 2009-2309 S-RELAP5 Kinetics and Heat Conduction -22 1691 Model PCT (2010 Annual Report) 1691 PCT (2011 Annual Report) 1691 10 CFR 50.46 Changes Sleicher-Rouse Correlation CR 2011-7155 S-RELAP5 Sieicher-Rouse +8 PCT (2012 Annual Report) 1699 2013 Annual Report 10 CFR 50.46 Changes CR 2013-4230 201 3-4230 S-RELAP5 routine associated with the +6 1705 Letter, Len Newman RODEX3a fuel rod model in the code. Letter, Operations, Inc.),

(AREVA NP) to Gary Jarka (Entergy Operations, Inc.), "Interim Interim 1 OCFR5O.46 Reporting for Palisades,"

10CFR50.46 Palisades, FAB13-426, FAB1 3-426, dated September 16, 2013.

PCT (2013 Annual Report) 1705 Page 1 1 of 1I

ATTACHMENT 22 ATTACHMENT SMALL BREAK LOSS SMALL BREAK LOSS OF OF COOLANT COOLANT ACCIDENT PEAK CLADDING PEAK CLADDING TEMPERATURE TEMPERATURE

SUMMARY

SUMMARY

APCT (OF) 1°F) PCT PCT (OF)

(°F)

PCT (Last PCT (Last Acceptable Model Model Results)

Results) New New Cycle Cycle 21 21 Analysis 1734 1734 10 CFR 10 CFR_50.46_Changes 50.46 Changes CR 2009-337 S-RELAP5 CR S-RELAP5 Radiation Radiation to Fluid Fluid Correlation Correlation Under -64

-64 Predicts_the_Radiative_Heat_Transfer Predicts the Radiative Heat Transfer PCT (2009 PCT (2009 Annual Report)

Report) 1670 1670 10 CFR CFR_50.46_Changes 50.46 Changes CR 2009-2309 S-RELAP5 Kinetics Model +4 PCT (2009 30-Day Report) 1674 PCT (2010 Annual Report) 1674 PCT (2011 Annual Report) 1674 10 CFR CFR_50.46_Changes 50.46 Changes Sleicher-Rouse Correlation CR 2011-7155 S-RELAP5 Sieicher-Rouse -3 1671 PCT (2012 Annual Report) 1671 1671 PCT (2013 Annual Report) 1671 Page Page 11 ofof I1