NL-22-0832, Supplement to License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF .

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Supplement to License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF .
ML22300A260
Person / Time
Site: Hatch  Southern Nuclear icon.png
Issue date: 10/27/2022
From: Gayheart C
Southern Nuclear Operating Co
To:
Office of Nuclear Reactor Regulation, Document Control Desk
References
NL-22-0832
Download: ML22300A260 (1)
v • d • e


Text

Cheryl A. Gayheart 3535 Colonnade Parkway Regulatory Affairs Director Birmingham, AL 35243 205 992 5316 tel 205 992 7601 fax cagayhea@southernco.com October 27, 2022 Docket Nos.: 50-321 NL-22-0832 50-366 10 CFR 50.90 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Edwin I. Hatch Nuclear Plant - Units 1 and 2 Supplement to License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b Ladies and Gentlemen:

On October 26, 2021 [ADAMS Accession Number ML21300A153], pursuant to the provisions of Section 50.90 of Title 10 of the Code of Federal Regulations, Southern Nuclear Operating Company (SNC) requested amendments to Edwin I. Hatch Nuclear Plant (HNP), Units 1 and 2 renewed facility operating licenses (RFOLs) DPR-57 and NPF-5, respectively. The proposed amendment requested U.S. Nuclear Regulatory Commission (NRC) approval to modify Technical Specifications (TS) requirements to permit the use of Risk Informed Completion Times in accordance with TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b [ML18183A493]. The LAR impacted several TS sections, including TS 3.3.4.1, TS 3.3.4.2, and TS 3.6.1.3.

On December 6, 2021, subsequent to the submittal of the HNP TSTF-505 license amendment request (LAR), SNC submitted a LAR to adopt certain aspects of TSTF-207 [ML21340A255].

On September 2, 2022, the NRC issued Amendments 317 and 262 to the HNP Units 1 and 2 RFOLs, respectively, approving SNCs Hatch TSTF-207 LAR [ML22192A117]. Amendments 317 and 262 include changes to some of the same pages in TS 3.6.1.3 as the HNP TSTF-505 LAR. To account for Amendments 317 and 262, SNC provided a supplement to the HNP TSTF-505 LAR on September 30, 2022 [ML22273A096].

On December 13, 2021, subsequent to the submittal of the HNP TSTF-505 LAR, SNC submitted a LAR to adopt TSTF-227 and TSTF-297 [ML21347A385] (with supplement dated February 1, 2022 [ML22033A073]). It is anticipated that the NRC will issue Amendments 318 and 263 to the HNP Units 1 and 2 RFOLs, respectively, approving the HNP TSTF-227/297 LAR prior to approving the HNP TSTF-505 LAR. Amendments 318 and 263 will include changes to some of the same pages in TS 3.3.4.1 and TS 3.3.4.2 as the HNP TSTF-505 LAR.

The Enclosure to this letter describes the TS markup changes due to Amendments 318 and 263 and assesses their impact on SNCs Hatch TSTF-505 LAR.

U. S. Nuclear Regulatory Commission NL-22-0832 Page 2 of 2 The Attachment to this letter updates the impacted TS markups, provided initially in the license amendment request dated October 26, 2021, to include the effects of Amendments 318 and 263. These markups supersede only the TS 3.3.4.1 and TS 3.3.4.2 markups provided in the initial license amendment request dated October 26, 2021.

SNC requests the same approval and implementation schedule as requested in its original application [ML21300A153]. The conclusions of the No Significant Hazards Consideration Determination and Environmental Consideration contained in the original application have been reviewed and are unaffected by this supplement.

In accordance with 10 CFR 50.91, SNC is notifying the State of Georgia of this supplement to license amendment request by transmitting a copy of this letter, with attachment, to the designated State Official.

This letter contains no regulatory commitments. If you have any questions, please contact Amy Chamberlain at 205.992.6361.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 27th day of October 2022.

Respectfully submitted, C. A. Gayheart Director, Regulatory Affairs Southern Nuclear Operating Company CAG/agq

Enclosure:

Assessment of Amendments 318 and 263 Impact on HNP TSTF-505 License Amendment Request

Attachment:

Revised TSTF-505 Markups Reflecting Amendments 318 and 263 cc: Regional Administrator, Region ll NRR Project Manager - Hatch Senior Resident Inspector - Hatch Director, Environmental Protection Division - State of Georgia RType: CHA02.004

Edwin I. Hatch Nuclear Plant - Units 1 and 2 Supplement to License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 2, "Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b" Enclosure to NL-22-0832 Assessment of Amendments 318 and 263 Impact on HNP TSTF-505 License Amendment Request

Enclosure to NL-22-0832 Assessment of Amendments 318 and 263 Impact on HNP TSTF-505 License Amendment Request

1.0 INTRODUCTION

On October 26, 2021 [ADAMS Accession Number ML21300A153], Southern Nuclear Operating Company (SNC) requested amendments to Edwin I. Hatch Nuclear Plant (HNP), Units 1 and 2 renewed facility operating licenses (RFOLs) DPR-57 and NPF-5, respectively. The proposed amendment requested U.S. Nuclear Regulatory Commission (NRC) approval to modify Technical Specifications (TS) requirements to permit the use of Risk Informed Completion Times in accordance with TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b [ML18183A493]. The LAR impacted several TS sections, including TS 3.3.4.1, EOC-RPT Instrumentation and TS 3.3.4.2, ATWS-RPT Instrumentation.

On December 13, 2021, subsequent to the submittal of the HNP TSTF-505 license amendment request (LAR), SNC submitted a LAR to adopt TSTF-227 and TSTF-297 [ML21347A385] (with supplement dated February 1, 2022 [ML22033A073]). It is anticipated that the NRC will issue Amendments 318 and 263 to the HNP Units 1 and 2 RFOLs, respectively, approving the HNP TSTF-227/297 LAR prior to approving the HNP TSTF-505 LAR. Amendments 318 and 263 will include changes to some of the same pages in TS 3.3.4.1 and 3.3.4.2 as the HNP TSTF-505 LAR.

2.0 DESCRIPTION

OF CHANGE AND ASSESSMENT OF IMPACT The issuance of HNP RFOL Amendments 318 and 263 will include issuance of revised TS pages 3.3-28 through 3.3-30, 3.3-32, and 3.3-33 (impacts TS 3.3.4.1 Condition A and Required Action C.1 and TS 3.3.4.2 Required Action D.1). The Hatch TSTF-505 LAR included changes to TS pages 3.3-28 and 3.3-29 (impacts the Completion Time for Required Actions A.1 and A.2), thus there is overlap in the affected pages. Table 1 provides descriptions of the changes and assess the impact Amendments 318 and 263 have on SNCs HNP TSTF-505 LAR.

Page 1 of 3

Enclosure to NL-22-0832 Assessment of Amendments 318 and 263 Impact on HNP TSTF-505 License Amendment Request Table 1: Descriptions of Changes and Assessment of Impact (Sheet 1 of 2)

TS Condition Amendment 318 and 263 HNP TSTF-505 LAR (1)(2)

Changes (3) Proposed Changes (3) Assessment of Impact to HNP TSTF-505 LAR TS 3.3.4.1 Revises Condition A as Adds following to the The addition of required to Condition A is an administrative follows: Completion Time for Required clarification. Without the word required, one could interpret Condition A Actions A.1 and A.2: Condition A as needing entry even if the fuel thermal limits were being One or more required applied instead of applying the operability requirements to the End of channels inoperable. OR Cycle Recirculation Pump Trip (EOC-RPT) instrumentation. This change clarifies that the EOC-RPT instrumentation would not be In accordance with the Risk required, and Condition A would not need to be entered, if the Informed Completion Time Minimum Critical Power Ratio limits are made applicable, as allowed Program by the Limiting Condition for Operation (LCO).

Due to the administrative nature of the Amendments 318 and 263 change, there is no impact to the HNP TSTF-505 LAR application of Risk Informed Completion Time (RICT) to Required Actions A.1 and A.2.

TS 3.3.4.1 Revises Required Action C.1 The Amendments 318 and 263 change adds clarity to TS 3.3.4.1 Condition C as follows: Required Action C.1. TS 3.3.4.1 already has provisions to remove the associated recirculation pump from service if the trip function is lost.

NOTE------------ However, the modified wording and note added to the TS provide Only applicable if additional clarity that the Required Action to remove the affected inoperable channel is recirculation pump from service is only applicable if the inoperable the result of an channel is the result of an inoperable RPT breaker.

inoperable RPT breaker.

Due to the administrative nature of the Amendments 318 and 263 change, and the fact that the HNP TSTF-505 LAR does not propose applying RICT to the Completion Time for Required Action C.1, there is Remove the associated no impact to the HNP TSTF-505 LAR application of RICT to Required affected recirculation pump Actions A.1 and A.2 aside from changes to background text in the TS from service. markups.

Page 2 of 3

Enclosure to NL-22-0832 Assessment of Amendments 318 and 263 Impact on HNP TSTF-505 License Amendment Request Table 1: Descriptions of Changes and Assessment of Impact (Sheet 2 of 2)

TS Condition Amendment 318 and 263 HNP TSTF-505 LAR (1)(2)

Changes (3) Proposed Changes (3) Assessment of Impact to HNP TSTF-505 LAR TS 3.3.4.2 Adds following to the Amendments 318 and 263 do not impact TS 3.3.4.2 Condition A or the Completion Time for Required associated Required Actions and Completion Times. Therefore, there is Condition A Actions A.1 and A.2: no impact to the HNP TSTF-505 LAR application of RICT to Required Actions A.1 and A.2.

OR In accordance with the Risk Informed Completion Time Program TS 3.3.4.2 Revises Required Action D.1 The Amendments 318 and 263 change adds clarity to TS 3.3.4.2 Condition D as follows: Required Action D.1. TS 3.3.4.2 already has provisions to remove the associated recirculation pump from service if the trip function is lost.

NOTE------------ However, the modified wording and note added to the TS provide Only applicable if additional clarity that the Required Action to remove the affected inoperable channel is recirculation pump from service is only applicable if the inoperable the result of an channel is the result of an inoperable RPT breaker.

inoperable RPT breaker.

Due to the administrative nature of the Amendments 318 and 263 change, and the fact that the HNP TSTF-505 LAR does not propose Remove the associated applying RICT to the Completion Time for Required Action D.1, there is affected recirculation pump no impact to the HNP TSTF-505 LAR aside from changes to from service. background text in the TS markups.

Notes:

1. Due to formatting of tracked changes, some text rolls to subsequent pages. Therefore, the changes are compared on a TS Condition basis.
2. Conditions listed apply to Unit 1 TS and Unit 2 TS pages.
3. Underline format (e.g., underline) text indicates added text, and strikethrough format (e.g., deleted) text indicates deleted text.

Page 3 of 3

Edwin I. Hatch Nuclear Plant - Units 1 and 2 Supplement to License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b Attachment to NL-22-0832 Revised TSTF-505 Markups Reflecting Amendments 318 and 263 Note:

Blue underline indicates new text proposed in submittal dated October 26, 2021 Red strikethrough indicates deleted text proposed in submittal dated October 26, 2021 Green underline indicates new text added by Amendments 318 and 263 Grey strikethrough indicates text deleted by Amendments 318 and 263 Attachment consists of 8 pages, excluding this cover page

EOC-RPT Instrumentation 3.3.4.1 3.3 INSTRUMENTATION 3.3.4.1 End of Cycle Recirculation Pump Trip (EOC-RPT) Instrumentation LCO 3.3.4.1 a. Two channels per trip system for each EOC-RPT instrumentation Function listed below shall be OPERABLE:

1. Turbine Stop Valve (TSV) - Closure; and
2. Turbine Control Valve (TCV) Fast Closure, Trip Oil Pressure - Low.

OR

b. LCO 3.2.2, "MINIMUM CRITICAL POWER RATIO (MCPR)," limits for inoperable EOC-RPT as specified in the COLR are made applicable.

APPLICABILITY: THERMAL POWER 27.6% RTP.

ACTIONS

NOTE------------------------------------------------------------

Separate Condition entry is allowed for each channel.

CONDITION REQUIRED ACTION COMPLETION TIME A. One or more required A.1 Restore channel to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> channels inoperable. OPERABLE status.

OR In accordance with the Risk Informed Completion Time Program OR (continued)

HATCH UNIT 1 3.3-28 Amendment No. 318

EOC-RPT Instrumentation 3.3.4.1 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. (continued) A.2 -----------NOTE------------

Not applicable if inoperable channel is the result of an inoperable breaker.

Place channel in trip. 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> OR In accordance with the Risk Informed Completion Time Program B. One or more Functions with B.1 Restore EOC-RPT trip 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> EOC-RPT trip capability not capability.

maintained.

OR AND B.2 Apply the MCPR limit 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> MCPR limit for inoperable for inoperable EOC-RPT not made EOC-RPT as specified applicable. in the COLR.

C. Required Action and C.1 -----------NOTE------------

associated Completion Only applicable if Time not met. inoperable channel is the result of an inoperable RPT breaker.

Remove the associated 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> affected recirculation pump from service.

OR C.2 Reduce THERMAL 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> POWER to < 27.6%

RTP.

HATCH UNIT 1 3.3-29 Amendment No. 318

ATWS-RPT Instrumentation 3.3.4.2 3.3 INSTRUMENTATION 3.3.4.2 Anticipated Transient Without Scram Recirculation Pump Trip (ATWS-RPT)

Instrumentation LCO 3.3.4.2 Two channels per trip system for each ATWS-RPT instrumentation Function listed below shall be OPERABLE:

a. Reactor Vessel Water Level - ATWS-RPT Level; and
b. Reactor Steam Dome Pressure - High.

APPLICABILITY: MODE 1.

ACTIONS

NOTE------------------------------------------------------------

Separate Condition entry is allowed for each channel.

CONDITION REQUIRED ACTION COMPLETION TIME A. One or more channels A.1 Restore channel to 14 days inoperable. OPERABLE status.

OR In accordance with the Risk Informed Completion Time Program OR (continued)

HATCH UNIT 1 3.3-31 Amendment No. 266

ATWS-RPT Instrumentation 3.3.4.2 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. (continued) A.2 -----------NOTE------------

Not applicable if inoperable channel is the result of an inoperable breaker.

Place channel in trip. 14 days OR In accordance with the Risk Informed Completion Time Program B. One Function with B.1 Restore ATWS-RPT trip 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> ATWS-RPT trip capability capability.

not maintained.

C. Both Functions with C.1 Restore ATWS-RPT trip 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> ATWS-RPT trip capability capability for one not maintained. Function.

D. Required Action and D.1 -----------NOTE------------

associated Completion Only applicable if Time not met. inoperable channel is the result of an inoperable RPT breaker.

Remove the associated 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> affected recirculation pump from service.

OR D.2 Be in MODE 2. 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> HATCH UNIT 1 3.3-32 Amendment No. 318

EOC-RPT Instrumentation 3.3.4.1 3.3 INSTRUMENTATION 3.3.4.1 End of Cycle Recirculation Pump Trip (EOC-RPT) Instrumentation LCO 3.3.4.1 a. Two channels per trip system for each EOC-RPT instrumentation Function listed below shall be OPERABLE:

1. Turbine Stop Valve (TSV) - Closure; and
2. Turbine Control Valve (TCV) Fast Closure, Trip Oil Pressure - Low.

OR

b. LCO 3.2.2, "MINIMUM CRITICAL POWER RATIO (MCPR)," limits for inoperable EOC-RPT as specified in the COLR are made applicable.

APPLICABILITY: THERMAL POWER 27.6% RTP.

ACTIONS

NOTE----------------------------------------------------------

Separate Condition entry is allowed for each channel.

CONDITION REQUIRED ACTION COMPLETION TIME A. One or more required A.1 Restore channel to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> channels inoperable. OPERABLE status.

OR In accordance with the Risk Informed Completion Time Program OR (continued)

HATCH UNIT 2 3.3-28 Amendment No. 263

EOC-RPT Instrumentation 3.3.4.1 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. (continued) A.2 ------------NOTE-----------

Not applicable if inoperable channel is the result of an inoperable breaker.

Place channel in trip. 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> OR In accordance with the Risk Informed Completion Time Program B. One or more Functions with B.1 Restore EOC-RPT trip 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> EOC-RPT trip capability not capability.

maintained.

OR AND B.2 Apply the MCPR limit 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> MCPR limit for inoperable for inoperable EOC-RPT not made EOC-RPT as specified applicable. in the COLR.

C. Required Action and C.1 -----------NOTE------------

associated Completion Only applicable if Time not met. inoperable channel is the result of an inoperable RPT breaker.

Remove the associated 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> affected recirculation pump from service.

OR C.2 Reduce THERMAL 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> POWER to < 27.6%

RTP.

HATCH UNIT 2 3.3-29 Amendment No. 263

ATWS-RPT Instrumentation 3.3.4.2 3.3 INSTRUMENTATION 3.3.4.2 Anticipated Transient Without Scram Recirculation Pump Trip (ATWS-RPT)

Instrumentation LCO 3.3.4.2 Two channels per trip system for each ATWS-RPT instrumentation Function listed below shall be OPERABLE:

a. Reactor Vessel Water Level - ATWS-RPT Level; and
b. Reactor Steam Dome Pressure - High.

APPLICABILITY: MODE 1.

ACTIONS

NOTE------------------------------------------------------------

Separate Condition entry is allowed for each channel.

CONDITION REQUIRED ACTION COMPLETION TIME A. One or more channels A.1 Restore channel to 14 days inoperable. OPERABLE status.

OR In accordance with the Risk Informed Completion Time Program OR (continued)

HATCH UNIT 2 3.3-31 Amendment No. 210

ATWS-RPT Instrumentation 3.3.4.2 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. (continued) A.2 ------------NOTE-----------

Not applicable if inoperable channel is the result of an inoperable breaker.

Place channel in trip. 14 days OR In accordance with the Risk Informed Completion Time Program B. One Function with B.1 Restore ATWS-RPT trip 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> ATWS-RPT trip capability capability.

not maintained.

C. Both Functions with C.1 Restore ATWS-RPT trip 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> ATWS-RPT trip capability capability for one not maintained. Function.

D. Required Action and D.1 -----------NOTE------------

associated Completion Only applicable if Time not met. inoperable channel is the result of an inoperable RPT breaker.

Remove the associated 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> affected recirculation pump from service.

OR D.2 Be in MODE 2. 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> HATCH UNIT 2 3.3-32 Amendment No. 263

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