NL-19-0650, 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018

10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018

ML19156A245
Person / Time
Site:	Hatch, Vogtle, Farley
Issue date:	06/05/2019
From:	Gayheart C Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NL-19-0650
Download: ML19156A245 (16)

Text

.4. Southern Nuclear Cheryl A. Gayheart Regulatory Affatrs Dtrector 3535 Colonnade Parkway Btrmtngham AL 35243 205 992 5316 tel 205 992 7795 fax cagayhea@southernco com JUN 0 5 2019 Docket Nos. : 50-321 50-348 50-424 NL-19-0650 50-366 50-364 50-425 U. S. Nuclear Regulatory Commission ATIN : Document Control Desk Washington , D. C. 20555-0001 Edwin I. Hatch Nuclear Plant Units 1 and 2 Joseph M. Farley Nuclear Plant Units 1 and 2 Vogtle Electric Generating Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Ladies and Gentlemen:

Southern Nuclear Operating Company (SNC) is the licensed operator for the Edwin I. Hatch Nuclear Plant (Hatch) Units 1 & 2, the Joseph M. Farley Nuclear Plant (Farley) Units 1 and 2, and the Vogtle Electric Generating Plant (Vogtle), Units 1 and 2. The requirements of 10 CFR 50.46(a)(3)(ii) include an annual report by licensees of changes to, or errors in, acceptable emergency core cooling system (ECCS) models that affect the temperature calculation and the estimated effect of changes or errors on the limiting ECCS analysis. Accordingly, the reports required by 10 CFR 50.46(a)(3)(ii) for Hatch, Farley and Vogtle are provided in Enclosures 1, 2 ,

and 3. The resulting peak cladding temperature (PCT) for Hatch, Farley and Vogtle continue to meet the criterion of 10 CFR 50.46(b)(1) (i.e.,~ 2200°F).

This letter contains no NRC commitments. If you have any questions, please contact Jamie Coleman at 205.992.6611 .

Respectfully submitted, Regulatory Affairs Director CAGffLE/scm

U.S. Nuclear Regulatory Commission NL-19-0650 Page 2

Enclosures:

1. Edwin I. Hatch Nuclear Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018

2. Joseph M. Farley Nuclear Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018

3. Vogtle Electric Generating Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 cc: Regional Administrator, Region II NRR Project Manager- Farley, Hatch, Vogtle 1 & 2 Senior Resident Inspector- Farley, Hatch, Vogtle 1 & 2 NRR Project Manager- Farley, Hatch, Vogtle 1 & 2 RType: Farley=CFA04.054, Hatch=CHA02.004, Vogtle=CVC7000

Edwin I. Hatch Nuclear Plant Units 1 and 2 Joseph M. Farley Nuclear Plant Units 1 and 2 Vogtle Electric Generating Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Enclosure 1 Edwin I. Hatch Nuclear Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 to NL-19-0650 Edwin I. Hatch Nuclear Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Edwin I. Hatch Nuclear Plant Unit 1 Table 1-1a- SAFERIGESTR-LOCA Summary of Changes I Errors (2018) (GE14)

Estimated Description Effect (t.\ PCT, °F)

None affecting PCT. 0 Table 1-1b- SAFERIPRIME-LOCA Summary of Changes I Errors (2018) (GNF2)

Estimated Description Effect (t.\ PCT, °F)

None affecting PCT. 0 Table 1-1c- Cumulative Impact of Changes I Errors GE14 GNF2 Description t.\IPCTI t.\IPCTI (oF) (oF)

Changes/Errors Previously Reported (Reference 1) 0 0 Summary of Changes/Errors (2018) (Reference 2) 0 0 Cumulative 0 0 Total E1-1 to NL-19-0650 Edwin I. Hatch Nuclear Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Edwin I. Hatch Nuclear Plant Unit 2 Table 1-2a- SAFERIGESTR-LOCA Summary of Changes I Errors (2018) (GE14)

Estimated Description Effect (A PCT, °F)

None affecting PCT. 0 Table 1-2b- SAFERIPRIME-LOCA Summary of Changes I Errors (2018) (GNF2)

Estimated Description Effect (A PCT, °F)

None affecting PCT. 0 Table 1-2c- SAFERIPRIME-LOCA Summary of Changes I Errors (2018) (GNF3 LUAs)

Estimated Description Effect (A PCT, °F)

None affecting PCT. 0 E1-2 to NL-19-0650 Edwin I. Hatch Nuclear Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Table 1-2d- Cumulative Impact of Changes I Errors GNF3 GE14 GNF2 (LUAs)

Description iliPCTI iliPCTI (oF) (oF) iliPCTI (oF)1 Changes/Errors Previously Reported (Reference 1) 0 0 0 Summary of Changes/Errors (2018) (Reference 3) 0 0 0 Cumulative 0 0 0 Total 1 GNF3 lead-use assemblies (LUAs) have a PCT 50 degrees greater than GNF2 assemblies.

References:

1. Letter from Cheryl A. Gayheart to USNRC (NL-18-0539), ML18134A282, "Edwin I. Hatch Nuclear Plant Units 1 and 2, Joseph M. Farley Nuclear Plant Units 1 and 2, Vogtle Electric Generating Plant Units 1 and 2, 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2017," dated May 14, 2018

2. Global Nuclear Fuel 004N0711 , "Supplemental Reload Licensing Report for Hatch 1 Reload 28 Cycle 29," Revision 0, dated November 2017

3. Global Nuclear Fuel 002N6847, "Supplemental Reload Licensing Report for Hatch 2 Reload 24 Cycle 25," Revision 1, dated November 2016 E1-3

Edwin I. Hatch Nuclear Plant Units 1 and 2 Joseph M. Farley Nuclear Plant Units 1 and 2 Vogtle Electric Generating Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Enclosure 2 Joseph M. Farley Nuclear Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 to NL-19-0650 Joseph M. Farley Nuclear Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Joseph M. Farley Nuclear Plant- Unit 1 ASTRUM Best Estimate Large Break LOCA Evaluation Table 1-1a- Summary of Changes/Errors (2018)

Estimated Description Effect (d PCT °F)

None affecting PCT. 0 Table 1-1 b- Cumulative Impact of Changes/Errors d!PCTI Description (oF)

Changes/Errors Previously Reported (Reference 1) 0 Summary of Changes/Errors (2018) (Reference 2) 0 Cumulative Total 0 E2-1 to NL-19-0650 Joseph M. Farley Nuclear Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Joseph M. Farley Nuclear Plant- Unit 1 NOTRUMP Appendix K Small Break LOCA Evaluation Table 1-1c- Summary of Changes/Errors (2018)

Estimated Description Effect

(~ PCT °F)

None affecting PCT. 0 Table 1-1d- Cumulative Impact of Changes/Errors

~IPCTI Description (oF)

Changes/Errors Previously Reported (Reference 1) 0 Summary of Changes/Errors (2018) (Reference 2) 0 Cumulative Total 0 E2-2 to NL-19-0650 Joseph M. Farley Nuclear Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Joseph M. Farley Nuclear Plant- Unit 2 ASTRUM Best Estimate Large Break LOCA Evaluation Table 1-2a- Summary of Changes/Errors (2018)

Estimated Description Effect

(~ PCT °F)

None affecting PCT. 0 Table 1-2b- Cumulative Impact of Changes/Errors

~IPCTI Description (oF)

Changes/Errors Previously Reported (Reference 1) 0 Summary of Changes/Errors (2018) (Reference 2) 0 Cumulative Total 0 E2-3 to NL-19-0650 Joseph M. Farley Nuclear Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Joseph M. Farley Nuclear Plant- Unit 2 NOTRUMP Appendix K Small Break LOCA Evaluation Table 1-2c- Summary of Changes/Errors (2018)

Estimated Description Effect

(/1 PCT °F)

None affecting PCT. 0 Table 1-2d- Cumulative Impact of Changes/Errors 11IPCTI Description (oF)

Changes/Errors Previously Reported (Reference 1) 0 Summary of Changes/Errors (2018) (Reference 2) 0 Cumulative Total 0

References:

1. Letter from Cheryl A. Gayheart to USNRC (NL-18-0539), ML18134A282, "Edwin I. Hatch Nuclear Plant Units 1 and 2, Joseph M. Farley Nuclear Plant Units 1 and 2, Vogtle Electric Generating Plant Units 1 and 2, 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2017," dated May 14, 2018

2. Westinghouse Letter LTR-LIS-19-13, "J. M. Farley Units 1 and 2, 10 CFR 50.46 Annual Notification and Reporting for 2018," dated February 14, 2019 E2-4

Edwin I. Hatch Nuclear Plant Units 1 and 2 Joseph M. Farley Nuclear Plant Units 1 and 2 Vogtle Electric Generating Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Enclosure 3 Vogtle Electric Generating Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 to NL-19-0650 Vogtle Electric Generating Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Vogtle Electric Generating Plant- Unit 1 BASH Large Break LOCA Evaluation Table 1-1a- Summary of Changes/Errors (2018)

Estimated Description Effect

(!\ PCT) (°F)

None affecting PCT 0 Table 1-1 b

• Cumulative Impact of Changes/Errors l\jPCTI Description (oF)

Changes/Errors Previously Reported (Reference 1) 29 Summary of Changes/Errors (2018) (Reference 2) 0 Cumulative Total 29 E3-1 to NL-19-0650 Vogtle Electric Generating Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Vogtle Electric Generating Plant- Unit 1 Appendix K Small Break LOCA Evaluation Table 1-1c- Summary of Changes/Errors (2018)

Estimated Description Effect

(~ PCT)

None affecting PCT. 0 Table 1-1d- Cumulative Impact of Changes/Errors

~ IPCTI Description (oF)

Changes/Errors Previously Reported (Reference 1) 0 Changes/Errors 2018 Calendar Year (Reference 2) 0 Cumulative Total 0 E3-2 to NL-19-0650 Vogtle Electric Generating Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Vogtle Electric Generating Plant- Unit 2 BASH Large Break LOCA Evaluation Table 1-2a- Summary of Changes/Errors (2018}

Estimated Description Effect

(~ PCT}

None affecting PCT. 0 Table 1-2b *Cumulative Impact of Changes/Errors

~ IPCTI Description (oF)

Changes/Errors Previously Reported (Reference 1) 29 Summary of Changes/Errors (2018) (Reference 2) 0 Cumulative Total 29 E3-3 to NL-19-0650 Vogtle Electric Generating Plant Units 1 and 2 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2018 Vogtle Electric Generating Plant- Unit 2 Appendix K Small Break LOCA Evaluation Table 1-2c- Summary of Changes/Errors (2018)

Estimated Description Effect

(~ PCT)

None affecting PCT. 0 Table 1-2d- Cumulative Impact of Changes/Errors

~ IPCTI Description (oF)

Changes/Errors Previously Reported (Reference 1) 0 Changes/Errors 2018 Calendar Year (Reference 2) 0 Cumulative Total 0

References:

1. Letter from Cheryl A. Gayheart to USNRC (NL-18-0539), ML18134A282, "Edwin I. Hatch Nuclear Plant Units 1 and 2, Joseph M. Farley Nuclear Plant Units 1 and 2, Vogtle Electric Generating Plant Units 1 and 2, 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2017," dated May 14, 2018

2. Westinghouse Letter LTR-LIS-19-31, "A. W. Vogtle Units 1 and 2, 10 CFR 50.46 Annual Notification and Reporting for 2018," dated February 13, 2019 E3-4