ML21278A143

2 to Updated Final Safety Analysis Report, Chapter 5, Appendix 5E, Reduction in Containment Prestress and Long-Term Corrective Actions for Vertical Tendon Corrosion

ML21278A143
Person / Time
Site:	Calvert Cliffs
Issue date:	09/07/2021
From:	Exelon Generation Co
To:	Office of Nuclear Reactor Regulation
Shared Package
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References
NEI 99-04
Download: ML21278A143 (4)

Text

APPENDIX 5E REDUCTION IN CONTAINMENT PRESTRESS AND LONG-TERM CORRECTIVE ACTIONS FOR VERTICAL TENDON CORROSION TABLE OF CONTENTS PAGE CALVERT CLIFFS UFSAR 5E-i Rev. 47 5E.0 REDUCTION IN CONTAINMENT PRESTRESS AND LONG-TERM CORRECTIVE ACTIONS FOR VERTICAL TENDON CORROSION 5E.1-1 5E.1 REDUCTION IN CONTAINMENT PRESTRESS 5E.1-1 5E.1.1 DESIGN BASIS 5E.1-1 5E.1.2 DESIGN CRITERIA FOR PRESTRESS 5E.1-1 5E.1.3 DESIGN REANALYSIS 5E.1-1 5E.1.3.1 Summary of Calvert Cliffs Containment Reanalysis 5E.1-2 5E.

1.4 REFERENCES

5E.1-2 5E.2 LONG-TERM CORRECTIVE ACTIONS FOR VERTICAL TENDON CORROSION 5E.2-1 5E.2.1 DISCOVERY OF CORROSION 5E.2-1 5E.2.2 CAUSE OF VERTICAL TENDON CORROSION 5E.2-1 5E.2.3 LONG-TERM CORRECTIVE ACTIONS 5E.2-1 5E.2.3.1 Future Wire Breakage Prediction Model (a.k.a. Weibull Model) 5E.2-2 5E.2.3.2 Selection Criteria for Corroded Tendons to be Replaced 5E.2-3 5E.2.3.3 Stressing Sequence of Tendons Replaced and Restressed 5E.2-4 5E.2.3.4 Tendon Bearing Plate Concrete Void Repairs 5E.2-4 5E.2.4 ACCEPTABILITY OF CONCRETE CONTAINMENTS 5E.2-4 5E.2.5 ENHANCED VERTICAL TENDON INSPECTIONS 5E.2-5 5E.2.6 CONTAINMENT PRESSURE TEST 5E.2-5 5E.

2.7 REFERENCES

5E.2-6 5E.3 EVALUATION OF PLANT OPERATING LICENSE EXTENSION ON TENDON SYSTEM 5E.3-1 5E.3.1 TENDON POPULATIONS 5E.3-1 5E.3.2 ORIGINAL TENDON PRESTRESS LOSSES 5E.3-1 5E.3.3 NEW TENDON PRESTRESS LOSSES 5E.3-2 5E.

3.4 REFERENCES

5E.3-3 5E.4 VERTICAL TENDON PRESTRESS LOSSES DUE TO FUTURE WIRE BREAKAGE 5E.4-1 5E.5 CONCLUSION 5E.5-1

APPENDIX 5E REDUCTION IN CONTAINMENT PRESTRESS AND LONG-TERM CORRECTIVE ACTIONS FOR VERTICAL TENDON CORROSION LIST OF TABLES TITLE PAGE CALVERT CLIFFS UFSAR 5E-ii Rev. 47 5E-1 STRESS ANALYSIS RESULTS 5E.1-3 5E-2 PRESTRESS COMPARISON IN VERTICAL TENDON SYSTEM 5E.2-7 5E-3 UNIT 1 TENDON POPULATIONS AND EFFECTIVE LIVES 5E.3-4 5E-4 UNIT 2 TENDON POPULATIONS AND EFFECTIVE LIVES 5E.3-5

APPENDIX 5E REDUCTION IN CONTAINMENT PRESTRESS AND LONG-TERM CORRECTIVE ACTIONS FOR VERTICAL TENDON CORROSION LIST OF FIGURES FIGURE CALVERT CLIFFS UFSAR 5E-iii Rev. 47 5E-1 RING GIRDER BEARING PLATE PLAN - BEARING PLATE REPAIRS AND TENDON STRESSING SEQUENCE - UNIT 1 5E-2 RING GIRDER BEARING PLATE PLAN - BEARING PLATE REPAIRS AND TENDON STRESSING SEQUENCE - UNIT 1

APPENDIX 5E REDUCTION IN CONTAINMENT PRESTRESS AND LONG-TERM CORRECTIVE ACTIONS FOR VERTICAL TENDON CORROSION LIST OF ACRONYMS CALVERT CLIFFS UFSAR 5E-iv Rev. 47 ASME American Society of Mechanical Engineers CCNPP Calvert Cliffs Nuclear Power Plant ISI Inservice Inspection NRC Nuclear Regulatory Commission PSC Precision Surveillance Corporation