ML22138A202

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Submittal of Revision 21 to Updated Final Safety Analysis Report
ML22138A202
Person / Time
Site: South Texas  STP Nuclear Operating Company icon.png
Issue date: 04/28/2022
From: Jefferson W
South Texas
To:
Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML22140A057 List:
References
NOC-AE-22003889
Download: ML22138A202 (13)
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Text

' I Nuclear Operating Company contains Sensitive information and is being withheld from public disclosure in accordance with 10 CFR 2.390(d)(1).

IIIJ *--

South Texas Project Elec!Tlc Generating Station P.Q Box 289 /Mldsworth, Texas 77483 ------------V\\Jv\\,--

ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 South Texas Project Units 1 and 2 April28,2022 NOC-AE-22003889 10 CFR 50.71(e) 10 CFR 2.390 File No. 043.01 STI: 35310845 Docket Nos. STN 50-498, STN 50-499 Updated Final Safety Analysis Report Revision 21 Pursuant to 10 CFR 50.71 (e), STP Nuclear Operating Company (STPNOC) hereby submits an update to the South Texas Project (STP) Updated Final Safety Analysis Report (UFSAR). This revision addresses changes made to the STP UFSAR since submittal of the last biennial update on April 29, 2020. to this letter includes a summary of changes made in Revision 21 under the provisions of 1 0CFRS0.59 or in accordance with the guidance of NEI 98-03 and NEI 96-07. Enclosure 2 to this letter includes a listing of information being withheld from Public Disclosure. Enclosure 3 includes one DVD containing the redacted version of the STP UFSAR, Revision 21. Enclosure 4 to this letter includes one DVD containing the non-public version of the STP UFSAR. Enclosure 4 contains

. sensitive information as defined by 10 CFR 2.390(d)(1) and should be withheld from public disclosure.

There are no commitments in this letter.

If you have any questions concerning this submittal, please contact me at (361) 972-4037 or Walter Fulton at (361) 972-4349.

I declare under penalty of perjury that the foregoing is true and correct.

Executed on William Jefferson Jr.

Site Vice President :

South Texas Project Updated Final Safety Analysis Report, Revision 21 Summary of Changes :

Information Redacted from the STP UFSAR Revision 21 :

Updated Final Safety Analysis Report, Revision 21 (Redacted - Public Version) :

Updated Final Safety Analysis Report, Revision 21 (Not for Public Disclosure)

cc:

Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 1600 E. Lamar Boulevard Arlington, TX 76011-4511 NOC-AE-22003889 Page 2 of 2 NOC-AE-22003889 South Texas Project Updated Final Safety Analysis Report, Revision 21 Summary of Changes

APPROVED CHANGE NOTICE LISTING FOR UFSAR REVISION 21

SUMMARY

of CHANGES UFSAR Chapter 1, "Introduction and General Description of Plant"

1. Update description of inadvertent fuel assembly misleading. (CN-3255)

[Table 1.6-2]

2. Remove the Post Accident Sampling System (PASS) description. (CN-3309)

[1.2.2.11.2]

Chapter 2, "Site Characteristics Chapter 3, "Design of Structures, Components, Equipment, and Systems

1. Clarify the location of pressure measurement as a result of the Unit 1 HP turbine upgrade.. (CN-3279) [3.9.1.1,6.3]
2. Designate Post Accident Sampling System (PASS) information Historic. (CN-3309) [Table 3.9-1.2]
3. Update stresses and ratios from EC 20-6224-5 and correct typos. (CN-3311)

[Table 3.6.2-1]

4. Updated table for the RCS Rod Control Cluster Assembly Cable Reel Removal and System Abandonment. (CN-3317) [Table 3.2.8-2] {NEI 98-03}
5. Update stresses and ratios from EC 20-2849-8. (CN-3330) [Table 3.6.2-1]
6. Make minor editorial changes to Nate 85 of Table 3.12-1 and section 3.8.1.7.3.1 ta clarify applicable ASME code year for surveillance of the containment post tensioning system. (CN-3334) [Note 85, Section 3.8.1.7.3.1]

{NEI 98-03}

Chapter 4, "Reactor

1. Corrected terminology for considering the LPMS system operational ta functional. (CN-3328) [4.4.6.4] {NEI 98-03}

Chapter 5, "Reactor Coolant System"

1. Corrected system design and operating numbers ta align with Westinghouse documents. (CN-3307) [Table 5.1-1]

Chapter 6, "Engineered Safety Features"

1. Incorporate reducing SI accumulator nitrogen cover pressure to 500 psig for Unit 1 cycle 23 only. (CN-3296) [6.2.1.1.3, 6.2.1.3, Tables 6.2.1.1-2, 6.2.1.1-5, 6.2.1.1-1 0A, 6.2.3-1, 6.2.1.3-A, 6.2.1.3-15A, 6.2.1.3-18A, 6.3-1, Figures 6.2.1.1-30-A, 6.2.1.1-31-A, 6.2.1.1-32-A]
2. Abandon the Post Accident Sampling System (PASS) Unit 1. (CN-3301)

[6.2.4.2.1, Table 6.2.4-1, Figure 6.2.4-1 Sheets 47, 75, 85, 86, 92, and 96 of 100]

3. Abandon the Post Accident Sampling System (PASS). (CN-3309) [6.2.4.2.1, Table 6.2.4-1, Figure 6.2.4-1 Sheets 47, 75, 85, 86, 92, and 96 of 100]
4. Update FHB Exhaust surveillance time and frequency. (CN-3313)

[Table 6.5-1]

DATE 4/27/2022 Page 1 of 4

APPROVED CHANGE NOTICE LISTING FOR UFSAR REVISION 21

SUMMARY

of CHANGES

5. Updated the UFSAR to show different style valve for 1-CV-0393. Per EC 21-10754-2, Valve 1-CV-0393 was changed from a bellows sealed globe valve to a Y-pattern packed type globe valve. (CN-3333) [Figure 6.2.4-1 (Sheet 53 of 100)]
6. Removed changes made via CN-3296. {CN-3326) [6.2.1.1.3, 6.2.1.3, Tables 6.2.1.1-2, 6.2.1.1-5, 6.2.1.1-10A, 6.2.3-1, 6.2.1.3-4A, 6.2.1.3-15A, 6.2.1.3-18A, 6.3-1, Figures 6.2.1.1-30-A, 6.2.1.1-31-A, 6.2.1.1-32-A] {NEI 98-03}
7. Editorial correction - revised FV-7145A to a 2-inch valve (CN-3332) [Figure 6.2.4-1 Sheet 6] {NEI 98-03}
8. Revised Section 6.3 to include information inadvertently removed during conversion from Rev. 6 to Rev. 7 (CN-3335) [Section 6.3, page 6.3-5]

. Chapter 7, "Instrumentation and Controls

1. Incorporate reducing SI accumulator nitrogen cover pressure to 500 psig for Unit 1 cycle 23 only. (CN-3296) [Table 7.5-1]
2. Clarify the location of pressure measurement as a result of the Unit 1 HP turbine upgrade. (CN-3279) [7.2.1.1.4, 7.2.2.2.3.10, 7.7.1.1, 7.7.1.2, 7.7.1.8, 7.7.2.4, 7.8.1, 7.8.2.1, 7.8.2.4, Tables 7.2-2, 7.7-1, Figures 7.2-4, 7.2-7, 7.2-10, 7.2-11, 7.2-17, 7.7-8]
3. Abandon the Post Accident Sampling System (PASS) Unit 1. (CN-3301)

[7A.ll1.D.1.1, Table 7.3-5, 7.3-7, 7.4-2, 78.8-1]

4. Abandon the Post Accident Sampling System (PASS). (CN-3309)

[7 A.I11.D.1.1, Table 7.3-5, 7.3-7, 7.4-2, 78.8-1]

5. Correction to STPEGS Response to II.K.3.10 to remove assumption made in response. (CN-3318) [Response to II.K.3.10 in Appendix 7A]
6. Revise UFSAR Figure 7.2-10 and reference 7.3-5 of Section 7.3.These changes are performed due to the installation of NIS lag filter in the reactor control circuit. (CN-3315) [Figure 7.2-10, 7.3-27]
7. Remove changes made via CN-3296. (CN-3326) [Table 7.5-1]

Chapter 8. "Electric Power"

1. Modify UFSAR TABLE OF CONTENTS to reflect that it is historical information and update page numbering of both Table of Contents and List of Tables. (CN-3327) [TC 8-1 and TC 8-2]

Chapter 9, "Auxiliary Systems"

1. Simplify presentation of information in section 9.5.1. (CN-3298) [9.5.1.1, 9.5.1.2.1 thru 16, 9.5.1.2.1.18, Table 9.5-3]
2. Abandon PASS in Unit 1. (CN-3292) [9.2.2.2.1, 9.4.2.2.2, 9.4.2.2.4, Table 9.4-1, 9.4-2.2]
3. Boration may continue after reaching cold shutdown to ensure shutdown margin. (CN-3303) [9.3.4.1.2]
4. Abandon the Post Accident Sampling System (PASS) Unit 1. (CN-3301)

[9.3.2.1.2, 9.3.2.2.1.2, 9.3.2.2.2.2, 9.3.2.2.3.2, 9.3.2.2.4.2, Table 9.3-5]

DATE 4/27/2022 Page 2 of 4

APPROVED CHANGE NOTICE LISTING FOR UFSAR REVISION 21

SUMMARY

of CHANGES

5. Abandon the Post Accident Sampling System (PASS). (CN-3309) [9.2.2.2.1, 9.2.6.1, 9.3.2.1.2, 9.3.2.2.1.2, 9.3.2.2.2.2, 9.3.2.2.3.2, 9.3.2.2.4.2, 9.3.2.3, 9.4.2.2.2, 9.4.2.2.4, Table 9.3-5, 9.4-1, 9.4-2.2]
6. Revised UFSAR Chapter 9 Section and Figure for the RCS Rod Control Cluster Assembly Cable Reel Removal and System Abandonment. (CN-3317)

[Ch 9 List of Figures, 9.1.4.2.2.3, 9.1.4.2.4.5, Figure 9.1.4-5] {NEI 98-03}

7. Update page 9.2-31 note about Table 9.2.7-1 stating to review calculations for actual parameters. (CN-3327) [9.2-31]
8. Updated footnote #1 to reflect the addition of stainless steel to the approved materials. (CN-3320) [9.2-2]
9. Update the maximum temperature for the Motor-Driven AFW Pump Rooms in UFSAR Table 9.4-1 to the results of calculation MC06426. (CN-3339)

Chapter 10, "Steam and Power System Conversions"

1. Clarify the location of pressure measurement as a result of the Unit 1 HP turbine upgrade. (CN-3279) [10.2.2. 7.5]

Chapter 11, "Radioactive Waste Management" Chapter 12, "Radiation Protection"

1. Editorial correction of Table 12.2.2-2 Airborne Radioactivity Concentration

. table. (CN-3321) [Table 12.2.2-2] {NEI 98-03}

Chapter 13 "Conduct of Operation's Chapter 14, "Initial Test Program" Chapter 15, "Accident Analyses"

1. Incorporate reducing SI accumulator nitrogen cover pressure to 500 psig for Unit 1 cycle 23 only. (CN-3296) [15.6.5.2, 15.6.5.4.3, Tables 15.6-19, 15.6-21]
2. Update description of inadvertent fuel assembly misleading. (CN-3255)

[15.4.7, Figures 15.4-21, 15.4-22, 15.4-23, 15.4-24, 15.4-25]

3. Revise UFSAR Figures 15.4-13 and 15.4-14 (Section 15.4.3). Also, revise UFSAR Table 15.5-1, Figures 15.5-1A and 15.5-18 (Section 15.5.2). These changes are performed due to the installation of NIS lag filter in the reactor control circuit. (CN-3315) [Table 15.5-1 (page 15.5-6), Figures: 15.4-13 (sheets 1 and 2), 15.4-14 (sheets 1 and 2), 15.5-1A, 15.5-18]
4. Remove changes made via CN-3296. (CN-3326) [15.6.5.2, 15.6.5.4.3, Tables 15.6-19, 15.6-21]

Chapter 16, "Technical Specifications"

1. Abandon the Post Accident Sampling System (PASS) Unit 1. (CN-3301)

[Table 16.1-1]

2. Abandon the Post Accident Sampling System (PASS). (CN-3309)

[Table 16.1-1]

DATE 4/27/2022 Page 3 of 4

APPROVED CHANGE NOTICE LISTING FOR UFSAR REVISION 21

SUMMARY

of CHANGES Chapter 19 - "APPENDIX A Introduction and License Renewal Commitments"

1. Update intercooler interconnection piping material and coating inspection requirement. (CN-3289) [19A.1, Table 19A.4-1]
2. Apply equipment performance history and reliability criteria to adjust testing and inspection frequencies of Fire Water equipment. (CN-3294) [19A.1.13, Table 19A.4-1]
3. Specify the Safety-related fuel oil storage and transfer system. (CN-3300)

[19A.1.14, Table 19A.4-1]

4. Update SOB #21 intercooler interconnection piping material and coating inspection requirement. (CN-3316) [19A.1, Table 19A.4-1]
5. Update UFSAR Section 19A.1.14 to be consistent with T.S. Change to Diesel Fuel Oil Program (CN-3324) [19A.1.14] {NEI 98-03}

NRG Q&R's

1. Revised to match FHAR allowance of nationally recognized labs as acceptable to appendix A of APCSB 9.5-1 and Regulatory Guide 1.189.

(CN-3290) [Q&R 9.5]

2. Abandon the Post Accident Sampling System (PASS) Unit 1. (CN-3301)

[Q&R 5.4]

DATE 4/27/2022 Page 4 of4 NOC-AE-22003889 Information Redacted from the STP UFSAR Revision 21

NOC-AE-22003889 Page 1 of 3 Information Redacted from the STP UFSAR Revision 21 April 2022 In accordance with the request in Regulatory Issues Summary 2015-17, "Review and Submission of Updates to Final Safety Analysis Reports, Emergency Preparedness Documents, and Fire Protection Documents," the South Texas Project is providing a redacted version of Revision 21 to the South Texas Project Updated Final Safety Analysis (UFSAR). The UFSAR contains certain sensitive information. Using the guidance provided in SECY-04-0191, the.information listed below has been redacted.

Document Number Justification for Withholding Figure 1.2-3, Plot Plan Figure shows "vital area boundary" fencing Figure 1.2-4, Plot Plan Figure shows "vital area boundary" fencing Table 2.4.1-1 Contains design information on nearby dams Table 2.4.1-2 Contains design information on nearby dams Table 2.4.1-3 Contains design information on nearby dams Table 2.4.1-4 Contains design information on nearby dams Table 2.4.1-5 Contains design information on nearby dams Table 2.4.1-6 Contains design information on nearby dams Table 2.4.1-7 Contains design information on nearby dams Table 2.4.1-8 Contains design information on nearby dams Table 2.4.1-9 Contains design information on nearby dams Table 2.4.1-1 O Contains design information on nearby dams Table 2.4.1-11 Contains design information on nearby dams Table 2.4.1-12 Contains design information on nearby dams Table 2.4.1-13 Contains design information on nearby dams Table 2.4.1-14 Contains design information on nearby dams Table 2.4.1-15 Contains design information on nearby dams Table 2.4.1-16 Contains design information on nearby dams Table 2.4.1-17 Contains design information on nearby dams Table 2.4.1-18 Contains design information on nearby dams Table 2.4.1-19 Contains design information on nearby dams Table 2.4.1-20 Contains design information on nearby dams Table 2.4.1-21 Contains design information on nearby dams Table 2.4.1-22 Contains desii:m information on nearby dams Table 2.4.1-23 Contains design information on nearby dams Table 2.4.1-24 Contains desiQn information on nearby dams Figure 6.2.1.2-3.

Subcompartment analysis drawings that show equipment locations, doorways, stairways Figure 6.2.1.2-4 Subcompartment analysis drawings that show equipment locations, doorways, stairways Figure 6.2.1.2-5 Subcompartment analysis drawings that show equipment locations, doorways, stairways Figure 6.2.1.2-6 Subcompartment analysis drawings that show equipment locations, doorways, stairways Figure 6.2.1.2-7 Subcompartment analysis drawings that show equipment locations, doorways, stairways

I Document Number Figure 6.2.1.2-9 Figure 6.2.2-3 Figure 6.2.2-6 Figure 6.2.2-7 Figure 6.2.2-8 Figure 6.2.2-9 Figure 6.2.2-1 O Figure 6.2.2-11 Figure 6.2.2-12 Figure 6.4-1 Figure 6.4-2 Figure 9.5.1-40 Figure 9.5.1-41 Figure 9.5.1-42 Figure 9.5.1-43 Figure 9.5.1-44 Fiaure 9.5.1-45 Fiaure 9.5.1-46 Fiaure 15.0-7 Fiaure 15.0-8 Fiaure 15.0-9 Fiaure 15.0-10 Fiaure 15.0-11 Fiaure 15.0-12 Fiaure 15.0-13 Fiaure 15.0-14 Figure 15.0-15 Figure 15.0-16 Figure 15.0-17 Fiaure 15.0-18 Figure 15.0-19 Figure 15.0-20 Figure 15.0-21 Figure 15.0-22 Information Redacted from the STP UFSAR Revision 21 Justification for Withholding NOC-AE-22003889 Page 2 of 3 Subcompartment analysis drawings that show equipment locations, doorways, stairways Reactor Building composite piping drawings that show eauipment locations Reactor Building Containment Spray System spray coverage drawinas that show equipment locations, doorways, stairways, Reactor Building Containment Spray System spray coverage drawings that show equipment locations, doorways, stairways, Reactor Building Containment Spray System spray coverage drawinas that show equipment locations, doorways, stairways, Reactor Building Containment Spray System spray coverage drawinas that show equipment locations, doorways, stairways, Reactor Building Containment Spray System spray coverage drawings that show equipment locations, doorways, stairways, Reactor Building Containment Spray System spray coverage drawings that show equipment locations, doorways, stairways, Reactor Building Containment Spray System spray coverage drawinas that show eauipment locations, doorways, stairways, Control Room layout drawings showing equipment locations and doorways.

Control Room layout drawings showing equipment locations and doorways.

Equipment location Equipment location Equipment location Equipment location Equipment location Equipment location Equipment location Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode I

Document Number Figure 15.0-23 Figure 15.0-24 Fiqure 15.0-25 Figure 15.0-27 Figure 15.0-28 Figure 15.0-29 Fiqure 15.0-30 Fiqure 15.0-31 Information Redacted from the STP UFSAR Revision 21 Justification for Withholding Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode Failure Mode NOC-AE-22003889 Page 3 of 3 Updated Final Safety Analysis Report, Revision 21 (Redacted - Public Version)

NOC-AE-22003889 contains Sensitive information and is being withheld from public disclosure iri accordance with 10 CFR 2.390(d)(1).

Updated Final Safety Analysis Report, Revis_ion 21 (Not for Public Disclosure)

NOC-AE-22003889

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