ML25086A276
| ML25086A276 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 03/27/2025 |
| From: | Spina J Arizona Public Service Co, Framatome |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| Shared Package | |
| ML25086A275 | List: |
| References | |
| 102-08926-JLS-MDD | |
| Download: ML25086A276 (1) | |
Text
10 CFR 50.55a Jennifer L. Spina Vice President, Nuclear Regulatory & Oversight Palo Verde Nuclear Generating Station P.O. Box 52034 Phoenix, AZ 85072 Mail Station 7602 Tel: 623.393.4621 102-08926-JLS/MDD March 2, 2025 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001
Subject:
Palo Verde Nuclear Generating Station Unit 1 Docket No. STN 50-528 Renewed Operating License No. NPF-41 Supplement to Relief Request 73-Proposed Alternative for Pressurizer Lower Shell Temperature Nozzle Life of Repair Pursuant to Title 10 of the Code of Federal Regulations (10 CFR) 50.55a, Codes and Standards, paragraph (z)(1), Arizona Public Service Company (APS) requested, by letter number 102-08882 dated December 10, 2024 [Agencywide Documents $FFHVVand Management System (ADAMS) Accession Nos. ML24346A110, ML24346A111 Nuclear Regulatory Commission (NRC) authorization of Relief Request 73, on the basis that the proposed alternative provides an acceptable level of quality and safety. APS proposed alternatives to American Society of Mechanical Engineers (ASME) Pressure Vessel Code,Section XI, 2013 Edition, and ASME Code Case N-638-10, Similar and Dissimilar Metal Welding Using Ambient Temperature Machine [Gas Tungsten Arc Welding] GTAW Temper Bead Technique,Section XI, Division 1, dated May 6, 2019, for Palo Verde Nuclear Generating Station (PVNGS), Unit 1, as described in the Enclosure to that letter.
The purpose of this supplement to Relief Request 73 is to provide the NRC with a revised document (Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair, Non-Proprietary Report 32-9379352-002, Proprietary Report 32-9373538-003) to justify continued use of the nozzle repair for the life of PVNGS Unit
1, including the initial license extension which expires June 1, 2045.
In the original Framatome analysis 32-9373538-002, provided in the APS RR-73 submittal as Attachment 3.3, the material properties of the PVNGS Unit 1 Pressurizer Lower Shell Temperature Nozzle existing material were used citing ASME Code Section III 1971 Edition. Subsequently, Framatome questioned if ASME Code Section III 1971 Edition, including Addenda through Winter 1973 should have been used. Action was taken to investigate and it was discovered that the conductivity values were impacted with the 1973 Winter Addenda. No other impacts were identified. Framatome evaluated the error and the impacted documentation to ensure the safety of the plant was maintained and a Condition Report was initiated.
A member of the STARS Alliance, LLC Callaway
- Diablo Canyon
- Palo Verde
- Wolf Creek of the Enclosure transmitted herewith contains PROPRIETARY information.
When Attachment 3 of the Enclosure is separated, this transmittal is decontrolled.
102-08926-JLS/MDD ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Supplement to Relief Request 73-Proposed Alternative for Pressurizer Lower Shell Temperature Nozzle Life of Repair Page 2 The original proprietary Life of Repair analysis 32-9373538-002 was updated to Revision 3 (Proprietary Report 32-9373538-003) to add Addenda through Winter 1973 and correct the conductivity values. The conclusions of the analysis remain valid and continue to meet the design specification requirements and the ASME Code for the Life of Repair for PVGS Unit 1. Framatome concluded that the error is not a potential deviation to a technical requirement included in a procurement document or potentially reportable under 10 CFR 21.
This letter provides the revised document (both non-proprietary and proprietary) to support Relief Request 73. Specifically, Attachments 1 and 3 contain the non-proprietary and proprietary versions of the supplemental information, respectively. Attachment 2 contains the affidavit signed by Framatome Inc. (Framatome) that set forth the basis on which the proprietary information in the Attachment 3 document may be withheld from public disclosure by the Commission and addresses with specificity the considerations listed in 10 CFR 2.390(a)(4).
Correspondence with respect to the proprietary aspects of the Attachment 3 proprietary documents or the supporting Framatome affidavit should be addressed to Philip A. Opsal, Manager, Product Licensing for Framatome.
No new commitments are being made to the Nuclear Regulatory Commission by this letter.
Should you need further information regarding this letter, please contact Michael D.
DiLorenzo, Licensing Department Leader, at (623) 393-3495.
Sincerely, JLS/MDD/cr :
Non-Proprietary Version of:
Report 32-9379352-002 Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair :
Affidavit for:
Proprietary Report 32-9373538-003 Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair :
Proprietary Version of:
Report 32-9373538-003 Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair Spina, Jennifer (Z08962)
Digitally signed by Spina, Jennifer (Z08962)
Date: 2025.03.27 13:02:57 -07'00'
102-08926-JLS/MDD ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Supplement to Relief Request 73-Proposed Alternative for Pressurizer Lower Shell Temperature Nozzle Life of Repair Page 3 cc:
J. D. Monninger NRC Region IV Regional Administrator W. T. Orders NRC NRR Project Manager for PVNGS N. Cuevas Resident Inspector for PVNGS
Supplement to Relief Request 73-Proposed Alternative for Pressurizer Lower Shell Temperature Nozzle Life of Repair Supplement to Relief Request 73 Palo Verde Nuclear Generating Station - Unit 1 Non-Proprietary Report 32-9379352-002 Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair
Page 1 of 137 0402-01-F01 (Rev. 023, 06/20/2024)
PROPRIETARY CALCULATION
SUMMARY
SHEET (CSS)
Document No.
32 9379352 002 Safety Related: Yes No Title Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
PURPOSE AND
SUMMARY
OF RESULTS:
PURPOSE:
The purpose of this document is to provide the calculations used to justify the continued operation of the Palo Verde Nuclear Generating Station designed pressurizer replacement temperature nozzle and thermowell weld using the requirements given in ASME Section III Code Division 1, Subsection NB (Reference [4]) and geometry based on References [5], [6], [9], and [10].
This document contains the initial demonstration of compliance with the requirements of Reference [11] and qualification of applicable ASME Code criteria, Reference [4] for primary stress evaluation, ASME Class 1 design analysis of the pressurizer thermowell to instrument nozzle weld, as well as the subsequent ASME Section III Code qualification, Reference [4], for continued operation. Additional background information can be found in Section 1.0.
Primary stresses and primary plus secondary stresses are justified in Section 6.0 according to article NB-3200 of the ASME Code, 2013 Edition [4]. The thermowell to instrument nozzle weld forms parts of the pressurizer pressure boundary and is designed in accordance with the Design Specification, Reference [11], and the criteria from article NB-3600 of the ASME Code, 2013 Edition [4].
SUMMARY
OF RESULTS:
The calculations herein demonstrate that the PZR temperature nozzle and thermowell replacement meets the stress requirements of Section III of the ASME Code (Reference [4]). The fatigue life of the replacement temperature nozzle and thermowell is acceptable for [
] The detailed summary of results is listed in Section 7.0.
Total number of pages is 137. This includes Appendix A (29 pages) and Appendix B (11 pages).
FRAMATOME INC. PROPRIETARY This document and any information contained herein is the property of Framatome Inc. (Framatome) and is to be considered proprietary and may not be reproduced or copied in whole or in part. This document shall not be furnished to others without the express written consent of Framatome and is not to be used in any way which is or may be detrimental to Framatome. This document and any copies that may have been made must be returned to Framatome upon request.
EXPORT CONTROLLED INFORMATION Contains technology subject to U.S. export controls governed by the Export Administration Regulations (15 CFR Part 730 et seq.) and/or the Department of Energy Regulations (10 CFR Part 810). Diversion contrary to U.S. law is prohibited.
Export Classification US EC: N Part 810 EAR ECCN: N/A If the computer software used herein is not the latest version per the EASI list, AP 0402-01 requires that justification be provided.
THE DOCUMENT CONTAINS ASSUMPTIONS THAT SHALL BE VERIFIED PRIOR TO USE THE FOLLOWING COMPUTER CODES HAVE BEEN USED IN THIS DOCUMENT:
CODE/VERSION/REV CODE/VERSION/REV Yes No Ansys 19.2 For Information Only
Document No. 32-9379352-002 0402-01-F01 (Rev. 023, 06/20/2024)
PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 2 Review Method: Design Review (Detailed Check)
Alternate Calculation Does this document establish design or technical requirements? YES NO Does this document contain Customer Required Format?
YES NO Signature Block Name and Title Signature and Date Role Scope / Comments Brady Cameron Engineer II LP All, except Sections 6.2 and 7.2 Chris McGaughy Advisory Engineer P
Sections 6.2 and 7.2 Tomas Straka Advisory Engineer M
All, except Sections 6.2 and 7.2 Don Kim Advisory Engineer LR All, except Sections 6.2 and 7.2 Eric Nelson Advisory Engineer R
Sections 6.2 and 7.2 Rhimou Sulldi Engineering Supervisor A
All Role Definitions:
P/R/A designates Preparer (P), Reviewer (R), Approver (A);
LP/LR designates Lead Preparer (LP), Lead Reviewer (LR);
M designates Mentor (M);
PM designates Project Manager (PM)
For Information Only
Document No. 32-9379352-002 0402-01-F01 (Rev. 023, 06/20/2024)
PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 3 Record of Revision Revision No.
Pages / Sections /
Paragraphs Changed Brief Description / Change Authorization 000 All Initial Release. Proprietary document is 32-9373538 001 All Proprietary version is 32-9373538-002 Page 1 / Purpose Added Reference [6] to list of applicable drawings.
Section 1.0 / All Revised summary of work-to-date on the Palo Verde pressurizer temperature nozzle to include scope of this revision (i.e. combines 32-9370429-000 and 32-9370512-000 with content from Revision 000).
Section 2.0 / All Appended Section 2.0 with the analytical methodology used in 32-9370429-000 and 32-9370512-000.
Section 2.0 / All Changed outer sleeve to outer sleeve with autogenous weld to address customer comment.
Section 2.0 / All Added note that tentative is verbiage used in ASME Code. Removed applicability statement.
Section 2.0 / All Added clarification that the thermowell and associated pressure boundary weld are not modeled in FEA.
Section 3.0 / 3.1 Unverified assumptions inherited from corrosion evaluation.
Section 3.0 / 3.2 Added corrosion timeframes for individual units.
Section 3.0 / 3.2 Corrected wording to clarify thermowell component and extended service life.
Section 3.0 / 3.2 Added justified assumptions concerning the corrosion rate used in 32-9370429-000.
Section 3.0 / 3.3 Added clarifying dimensions to section detailing press fit.
Section 3.0 / 3.3 Clarified that the outer sleeve is press fit to address customer comment.
Section 4.0 / 4.2 Inserted sub-section specifying design conditions.
Section 4.0 / 4.3 Added illustration of thermowell to Figure 4-1.
Section 4.0 / 4.4 Appended material properties for thermowell to Table 4-2.
Section 4.0 / 4.4.1 Added Table 4-8 to include material properties for SA-479.
Section 4.0 / 4.4.2 Appended allowable stress values for SA-479 to Table 4-9.
Section 4.0 / 4.5.1 Included mention of vertical acceleration due to OBE and SSE seismic loads.
Section 4.0 / 4.5.1 Inserted tables and figures listing seismic loads. Specified these external loads are calculated from the Design Spec.
Section 4.0 / 4.5.2 Specified customer reports taken from References [17] and
[18]. Moved explanatory paragraph to precede Table 4-12.
For Information Only
Document No. 32-9379352-002 0402-01-F01 (Rev. 023, 06/20/2024)
PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Record of Revision (continued)
Page 4 Revision No.
Pages / Sections /
Paragraphs Changed Brief Description / Change Authorization Section 4.0 / 4.5.2 Added citations to Table 4-12.
Section 4.0 / 4.5.2 Added note to Table 4-14 specifying how transients were grouped.
Section 4.0 / 4.5.2 Added note to Table 4-15 through Table 4-28 clarifying why time is measured in hours.
Section 4.0 / 4.5.3 Inserted sub-section specifying plant transient cycle frequencies.
Section 6.0 / All Moved all content from Section 6.0 in previous revision to Section 6.3. Inserted Section 6.1 which includes all calculations from 32-9370429-000. Inserted Section 6.2 which includes all calculations from 32-9370512-000.
Section 6.0 / 6.1.1 Included reference to Section 6.1.1.2.5 to clarify where the opening reinforcement calculation is performed. Added bullet point to detail pressure boundary weld calculation.
Section 6.0 / 6.1.1.2.2 Changed psi to psia for design pressure.
Section 6.0 / All Revised corrosion calculations throughout to account for life of Unit 1, Unit 2, and Unit 3 individually.
Section 6.0 / 6.1.3 Removed paragraph summarizing OCJ, as no longer relevant.
Section 6.0 / 6.3.5.2.1 Added sentence The Zero Stress State (ZSS) is also included in the main runs but not for the separate Insurge/Outsurge transients to address customer comment.
Section 6.0 / 6.3.5.2.2 Added Table 6-20 and Table 6-21 to summarize transient pairings for bounding CFUF values.
Section 6.0 / 6.3.5.2.2 Corrected typo. Fictious to fictitious.
Section 7.0 / All Moved all content from Section 7.0 in previous revision to Section 7.3. Inserted Section 7.1 which includes all results from 32-9370429-000. Inserted Section 7.2 which includes all results from 32-9370512-000.
Section 7.0 / 7.1 Removed ratio column, renamed columns for actual and required values, and corrected references in Table 7-1.
Section 7.0 / 7.2 Removed ratio column and added note clarifying actual/required values in Table 7-2.
Section 8.0 / All Added new references used in this revision.
002 All Proprietary version is 32-9373538-003 CSS Total page count updated.
For Information Only
Document No. 32-9379352-002 0402-01-F01 (Rev. 023, 06/20/2024)
PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Record of Revision (continued)
Page 5 Revision No.
Pages / Sections /
Paragraphs Changed Brief Description / Change Authorization Section 1.0 Statement, The analysis is updated to Revision 003 to satisfy CR 2024-3545 is added to the background information.
Section 2.0 Reference updated in Paragraph #5 of Thermowell Methodology.
Section 3.0 / 3.1 Editorial.
Section 3.0 / 3.2 Updated Figure references and editorial change to Paragraph #4.
Section 3.0 / 3.3 Modeling simplification #3 updated.
Section 4.0 / 4.4 Reference column and Reference in Note 4 of Table 4-2 updated.
Section 4.0 / 4.4.1 Reference updated in second paragraph Section 4.0 / 4.4.1 Updated definition of T-70°F in density calculation equation.
Section 4.0 / 4.4.1 Thermal conductivity and calculated heat capacity updated in Table 4-4.
Section 4.0 / 4.4.1 References updated in Table 4-7.
Section 4.0 / 4.5.2 Note added to Table 4-27.
Section 6.0 / 6.1.1.2.1 Typo.
Section 6.0 / 6.1.1.2.5 Reference updated.
Section 6.0 / 6.1.2 Reference 4 removed.
Section 6.0 / 6.2.1 Reference updated.
Section 6.0 / 6.2.2.5 Reference updated.
Section 6.0 / 6.3.1.1.1 Removed reference to Figure 6-8 in first paragraph.
Section 6.0 / 6.3.1.1.1 Updated Figure and Table references along with small editorial changes in second and third paragraph.
Section 6.0 / 6.3.1.1.2 Updated Figure references and editorial change.
Section 6.0 / 6.3.2 Updated Figure references.
Section 6.0 / 6.3.2 Figure 6-11 updated.
Section 6.0 / 6.3.3 Editorial, parenthesis removed.
Section 6.0 / 6.3.4 Table 6-3 title updated.
Section 6.0 / 6.3.4 Table 6-3 through Table 6-16 updated.
Section 6.0 / 6.3.5.2.1 Table 6-18 updated.
Section 6.0 / 6.3.5.2.2 Table 6-19 through Table 6-22 updated.
For Information Only
Document No. 32-9379352-002 0402-01-F01 (Rev. 023, 06/20/2024)
PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Record of Revision (continued)
Page 6 Revision No.
Pages / Sections /
Paragraphs Changed Brief Description / Change Authorization Section 7.0 / 7.3 Table 7-3 updated.
Section 7.0 / 7.2 Reference to Section 6.2 added.
Section 8.0 Reference 4 updated. Reference 16 added.
Appendix B Computer files updated.
Appendix A Figure A-1 through Figure A-28 updated.
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 7 Table of Contents Page SIGNATURE BLOCK................................................................................................................................ 2 RECORD OF REVISION.......................................................................................................................... 3 LIST OF TABLES..................................................................................................................................... 9 LIST OF FIGURES................................................................................................................................. 11
1.0 BACKGROUND
...........................................................................................................................13 2.0 ANALYTICAL METHODOLOGY................................................................................................. 14 3.0 ASSUMPTIONS..........................................................................................................................16 3.1 Unverified Assumptions...................................................................................................................16 3.2 Justified Assumptions......................................................................................................................17 3.3 Modeling Simplifications..................................................................................................................18 4.0 DESIGN INPUTS........................................................................................................................19 4.1 Code Classification..........................................................................................................................19 4.2 Design Conditions...........................................................................................................................19 4.3 Geometry.........................................................................................................................................19 4.4 Materials..........................................................................................................................................21 4.4.1 Material Properties............................................................................................................22 4.4.2 ASME Code Allowable Stresses.......................................................................................26 4.5 Loads...............................................................................................................................................27 4.5.1 Design Loads....................................................................................................................27 4.5.2 Operating Transient Loads...............................................................................................30 4.5.3 Plant Transient Cycles......................................................................................................41 4.5.4 External Loads..................................................................................................................41 5.0 COMPUTER USAGE..................................................................................................................42 5.1 Software..........................................................................................................................................42 5.2 Computer Files................................................................................................................................42 6.0 CALCULATIONS.........................................................................................................................43 6.1 Primary Stress Qualification............................................................................................................43 6.1.1 Primary Stress Evaluation................................................................................................43 6.1.2 Interference Check...........................................................................................................51 6.1.3 Fatigue Assessment.........................................................................................................52 6.1.4 Corrosion Evaluation........................................................................................................52 6.2 Thermowell to Instrument Nozzle Weld Design Analysis................................................................52 6.2.1 Pressure Sizing Calculation..............................................................................................52 6.2.2 Stress Evaluation..............................................................................................................53 For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Table of Contents (continued)
Page Page 8 6.3 ASME Section III Life of Repair.......................................................................................................56 6.3.1 Finite Element Model........................................................................................................56 6.3.2 Design Condition..............................................................................................................63 6.3.3 Thermal Analysis..............................................................................................................65 6.3.4 Structural Analysis............................................................................................................69 6.3.5 ASME Code Evaluation....................................................................................................82 7.0 RESULTS....................................................................................................................................94 7.1 Primary Stress Qualification Results...............................................................................................94 7.2 Thermowell to Instrument Nozzle Weld Design Analysis Results..................................................95 7.3 ASME Code Section III Fatigue Life of Repair Results...................................................................95
8.0 REFERENCES
............................................................................................................................96 APPENDIX A : ASME SECTION III LIFE OF REPAIR - TRANSIENT TEMPERATURE AND THERMAL PLOTS...................................................................................................... A-1 APPENDIX B : COMPUTER FILES.................................................................................................... B-1 For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 9 List of Tables Page Table 4-1: Geometry Key Dimensions...................................................................................................19 Table 4-2: Material Designations...........................................................................................................21 Table 4-3: Material Property Symbols and Units...................................................................................23 Table 4-4: Material Properties for [
]..................................................23 Table 4-5: Material Properties for [
]...........................................................24 Table 4-6: Material Properties for [
]...........................25 Table 4-7: Material Properties for [
]........................................................26 Table 4-8: Material Properties for [
].........................................................................26 Table 4-9: ASME Code Allowable Stresses for Level A and Level B Conditions..................................27 Table 4-10: Deadweight Loads..............................................................................................................27 Table 4-11: Seismic Loads....................................................................................................................28 Table 4-12: Maximum Pressure and Temperature.................................................................................30 Table 4-13: Transients for Fatigue Evaluation........................................................................................31 Table 4-14: Insurge/Outsurge Transients...............................................................................................32 Table 4-15: Heat Up (HU) Transient Definition......................................................................................32 Table 4-16: Cooldown (CD) Transient Definition....................................................................................33 Table 4-17: Loss of Trips (LOT) Transient Definition...........................................................................33 Table 4-18: Other Plant Trips (OTRIP) Transient Definition...................................................................34 Table 4-19: Loading (L) Transient Definition...........................................................................................35 Table 4-20: Unloading (UL) Transient Definition.....................................................................................36 Table 4-21: 10% Step Change (ST_UP) Transient Definition................................................................. 36 Table 4-22: 10% Step Change (ST_DWN) Transient Definition.............................................................37 Table 4-23: Leak Test (LT_UP) Transient Definition..............................................................................37 Table 4-24: Leak Test (LT_DWN) Transient Definition...........................................................................37 Table 4-25: Insurge/Outsurge1 (IN_OUT1) Transient Definition............................................................38 Table 4-26: Insurge/Outsurge2 (IN_OUT2) Transient Definition............................................................38 Table 4-27: Insurge/Outsurge7 IN_OUT7 Transient Definition...............................................................39 Table 4-28: Loss of Secondary Pressure (LSP) Transient Definition.....................................................40 Table 4-29: Plant Transient Cycles.........................................................................................................41 Table 6-1: Nodes for Temperature and Thermal Gradient Evaluation...................................................66 Table 6-2: Thermal Gradients.................................................................................................................67 For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
List of Tables (continued)
Page Page 10 Table 6-3: Time Points for HU Structural Evaluation..............................................................................70 Table 6-4: Time Points for CD Structural Evaluation..............................................................................70 Table 6-5: Time Points for LOT Structural Evaluation............................................................................71 Table 6-6: Time Points for OTRIP Structural Evaluation........................................................................71 Table 6-7: Time Points for L Structural Evaluation.................................................................................73 Table 6-8: Time Points for UL Structural Evaluation...............................................................................74 Table 6-9: Time Points for ST_UP Structural Evaluation........................................................................75 Table 6-10: Time Points for ST_DWN Structural Evaluation..................................................................76 Table 6-11: Time Points for LT_UP Structural Evaluation......................................................................76 Table 6-12: Time Points for LT_DWN Structural Evaluation..................................................................77 Table 6-13: Time Points for IN_OUT1 Structural Evaluation..................................................................77 Table 6-14: Time Points for IN_OUT2 Structural Evaluation................................................................. 78 Table 6-15: Time Points for IN_OUT7 Structural Evaluation..................................................................80 Table 6-16: Time Points for LSP Structural Evaluation..........................................................................81 Table 6-17: Path Line and Node Identification for ASME Code Evaluation............................................83 Table 6-18: Maximum Primary Plus Secondary Stress Intensity...........................................................88 Table 6-19: Summary of Cumulative Fatigue Usage Factors................................................................. 90 Table 6-20: [
]....................................91 Table 6-21: [
]..................................92 Table 6-22: [
]...........................................92 Table 7-1: Primary Stress Qualification Summary of Results................................................................94 Table 7-2: Summary of Thermowell to Instrument Nozzle Weld Design Analysis................................. 95 Table 7-3: Summary of ASME Section III Qualification Results.............................................................95 For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 11 List of Figures Page Figure 4-1: PZR Temperature Nozzle Replacement and Thermowell...................................................20 Figure 4-2: Thermowell and Temperature Detector Information............................................................29 Figure 6-1: Fillet Weld Dimensions........................................................................................................44 Figure 6-2: Weld Shear Stress Line........................................................................................................46 Figure 6-3: Counterbore Dimensions.....................................................................................................48 Figure 6-4: Pressurizer Drawing Excerpt [10]........................................................................................50 Figure 6-5: PZR Temperature Nozzle Finite Element Model..................................................................57 Figure 6-6: PZR Temperature Nozzle Finite Element Model (Close-Up of Weld)................................. 58 Figure 6-7: Thermal Load Application and Boundary Conditions...........................................................60 Figure 6-8: Thermal Load Application and Boundary Conditions Cont...................................................61 Figure 6-9: Surface with Constraints.......................................................................................................62 Figure 6-10: Surfaces of Pressure Application......................................................................................63 Figure 6-11: Design Condition Stress Intensity Contours and Deformed Shape Plot.............................65 Figure 6-12: Location Numbers for Evaluation of Thermal Gradients (Upper Region)..........................68 Figure 6-13: Location Numbers for Evaluation of Thermal Gradients (Lower Region)...........................69 Figure 6-14: Path Lines on Front Face (0-Degree).................................................................................85 Figure 6-15: Path Lines on Side Face (90-Degree)................................................................................86 Figure A-1: HU Temperature Plot........................................................................................................ A-2 Figure A-2: HU Thermal Gradient Plot................................................................................................. A-3 Figure A-3: CD Temperature Plot........................................................................................................ A-4 Figure A-4: CD Thermal Gradient Plot................................................................................................. A-5 Figure A-5: LOT Temperature Plot...................................................................................................... A-6 Figure A-6: LOT Thermal Gradient Plot............................................................................................... A-7 Figure A-7: OTRIP Temperature Plot.................................................................................................. A-8 Figure A-8: OTRIP Thermal Gradient Plot........................................................................................... A-9 Figure A-9: L Temperature Plot......................................................................................................... A-10 Figure A-10: L Thermal Gradient Plot................................................................................................ A-11 Figure A-11: UL Temperature Plot..................................................................................................... A-12 Figure A-12: UL Thermal Gradient Plot............................................................................................. A-13 Figure A-13: ST_UP Temperature Plot.............................................................................................. A-14 Figure A-14: ST_UP Thermal Gradient Plot...................................................................................... A-15 For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
List of Figures (continued)
Page Page 12 Figure A-15: ST_DWN Temperature Plot.......................................................................................... A-16 Figure A-16: ST_DWN Thermal Gradient Plot................................................................................... A-17 Figure A-17: LT_UP Temperature Plot.............................................................................................. A-18 Figure A-18: LT_UP Thermal Gradient Plot....................................................................................... A-19 Figure A-19: LT_DWN Temperature Plot........................................................................................... A-20 Figure A-20: LT_DWN Thermal Gradient Plot................................................................................... A-21 Figure A-21: IN_OUT1 Temperature Plot.......................................................................................... A-22 Figure A-22: IN_OUT1 Thermal Gradient Plot................................................................................... A-23 Figure A-23: IN_OUT2 Temperature Plot.......................................................................................... A-24 Figure A-24: IN_OUT2 Thermal Gradient Plot................................................................................... A-25 Figure A-25: IN_OUT7 Temperature Plot........................................................................................... A-26 Figure A-26: IN_OUT7 Thermal Gradient Plot................................................................................... A-27 Figure A-27: LSP Temperature Plot................................................................................................... A-28 Figure A-28: LSP Thermal Gradient Plot........................................................................................... A-29 For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 13
1.0 BACKGROUND
Inspection of the pressurizer at Palo Verde Unit 1 nuclear power station in Fall 2023 revealed leakage from one of its instrumentation nozzles. The nozzle identified was the lower temperature nozzle located on the pressurizer shell.
A nozzle replacement was performed to repair the affected area. [
] At this point, Framatome Inc. prepared a qualification for one cycle of operation (Reference [2]) as well as an ASME Class 1 design analysis (Reference [3]) of the thermowell weld. Subsequently, a full Section III Code qualification (Revision 000 of this document) was completed in Summer 2024 to demonstrate acceptability of the replaced nozzle for continued operation. This document found an acceptable fatigue life [
] of service for the replacement temperature nozzle. Now, Revision 001 includes the primary stress qualification and thermowell analysis, along with the ASME Section III Code qualification to provide a comprehensive overview of work performed by Framatome Inc. for the Palo Verde Nuclear Generating Station pressurizer temperature nozzle. The analysis is updated to Revision 003 to satisfy CR 2024-3545.
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 14 2.0 ANALYTICAL METHODOLOGY The following process is applied for demonstration of compliance with applicable ASME Code requirements, Reference [4], for primary stress qualification. Primary stress requirements are qualified for the life of the repair.
1)
Calculation of tentative nozzle thickness and comparison to actual thickness. Note tentative is consistent with verbiage used in ASME Section III NB-3324 (Reference [4]) to refer to this calculation.
2)
Calculation of shear stress in the repair weld connecting the nozzle to the weld pad due to pressure load considering corrosion effect on [
] Calculated stress is compared to allowable limits of design condition and applicable limits of operating conditions.
3)
Comparison of weld design sizes with minimum code size requirements as well as comparison of designed nozzle clearances with code clearances requirements.
4)
Assessment of repair and corrosion impact on reinforcements of opening code requirements using guidance of paragraph NB-3332.
5)
Primary plus secondary stresses and fatigue were originally qualified for one cycle of operation using qualitative approach of comparison of the original repair with the designed repair. They were subsequently qualified for the life of the repair in Section 6.3.
The following process is applied for demonstration of compliance with applicable ASME Code requirements, Reference [4], for evaluation of the weld between the instrumentation nozzle and the thermowell, shown in References [5] and [6], respectively.
1)
Weld Sizing: Fillet weld sizing for socket weld fittings is done by ensuring that the weld size meets the requirements of NB-4427. NB-4427 requires the weld for a socket weld fitting to have a minimum leg size of 1.09 times the nominal thickness of the pipe. [
]
2)
Design Conditions / Faulted Conditions: Design conditions are evaluated in accordance with NB-3652 using Eq. 9. Design pressure, deadweight, and OBE seismic loads are considered in the evaluation. Faulted conditions are evaluated in accordance with NB-3656 using Eq. 9. Design pressure, deadweight, and SSE seismic loads are considered in the evaluation. Note that the thermowell and temperature detector deadweight and seismic self-weight loads are evaluated in Section 4.4 to demonstrate that they are bounded by the loads considered.
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 15 3)
Level A Service Limits: As stated in Reference [14], there are no specified external loads for the temperature nozzle. This is due to the fact that there is no piping connected to this nozzle. Therefore, the thermal expansion loads listed in Reference [14], do not apply. The same deadweight and seismic loads considered for design conditions are used for level A service limits as well. Level A condition stresses are calculated in accordance with NB-3653 using Eqs. 10 and 11. The full range of temperature from 70°F to 700°F (design temperature) is considered in calculating the discontinuity stresses caused by the difference in thermal expansion coefficient between [
] and stainless steel. [
]
- a. [
]
- b. [
]
- c. [
]
4)
Fatigue: Cumulative usage factor is calculated assuming that the range of loading is from deadweight and OBE seismic loads. In reality, deadweight loads do not change and therefore are not required to be considered in the range of loading. The OBE loads are only required to be considered for OBE cycles.
However, for conservatism and simplicity, deadweight and OBE loads are applied for each of the loading cycles considered.
5)
Vibration: [
]
The following process is applied for demonstration of compliance with ASME Section III, Reference [4], for fatigue life of repair.
Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 16 1)
Build a three-dimensional finite element model (FEM) of the pressurizer (PZR) temperature nozzle replacement. The FEM geometry incorporates the PZR vessel shell and cladding with the penetration of interest, existing J-groove weld, buttering, outer sleeve with autogenous weld, and new J-groove weld and weld pad. Appropriate material properties are applied. The thermowell and associated pressure boundary weld to the nozzle are not included in the FEA model for simplification, but compliance with the ASME Code is performed in this design stress report.
2)
Apply design condition pressure and temperature to the structural finite element model to obtain deformation and stresses in the model. The results of this are used to verify the correct structural behavior of the model and correct modeling of structural boundary and loading conditions.
3)
Using thermal FEM, apply thermal loads for plant operating transients in the form of transient temperatures versus time with corresponding heat transfer coefficients. The results are used to determine the time points at which maximum temperature gradients develop at key locations in the model, which are evaluated in the structural analysis.
4)
Convert to structural FEM, apply corresponding pressure and thermal loads (temperature gradients) at the time points identified in Step 3 and some additional time points for steady state, maximum pressure, etc.
5)
Calculate the stress intensity due to external mechanical loads to be considered in evaluating the stress and fatigue criteria in Step 7.
6)
Review overall stress field to determine locations to extract linearized stresses.
7)
Based on the FEM results, perform ASME Code evaluation to demonstrate the PZR temperature nozzle replacement meets the applicable stresses and fatigue requirements of ASME Code Section III.
3.0 ASSUMPTIONS 3.1 Unverified Assumptions The corrosion evaluation used for the original primary stress calculation, Reference [7], included unverified assumptions concerning the normal operating condition of Operating Cycle 25. This reference has been superseded by a more recent corrosion evaluation, Reference [26], which includes the following unverified assumptions:
1)
It is assumed the proportions of time that PVNGS Units 1, 2, and 3 will be in operating, shutdown, and startup conditions will be the same as those indicated by historical operation data for the life of repairs (i.e.
the current remaining operating cycles for [
] of operation) in Reference [8]. Continued validation of this assumption must be performed, and the results of this analysis may not be conservative if the current plant operating schedule is not maintained (e.g. in the case of extended shutdowns or refueling outage length extension).
2)
It is assumed that PVNGS Units 1, 2, and 3 will maintain reactor coolant system (RCS) primary water chemistry in accordance with the EPRI PWR Primary Water Chemistry Guidelines during the life of the nozzle repairs (i.e. the current remaining operating cycles for [
] of operation). Continued validation of this assumption must be performed through water chemistry program monitoring, which is performed per the PVNGS LRA. Note that Revision 7 of the EPRI Primary Water Chemistry Guidelines is currently followed while the PVNGS LRA identified that Revision 5 of the EPRI Primary Water Chemistry For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 17 Guidelines was followed at that time by the PVNGS water chemistry program. This difference does not affect the results of the analysis herein.
3.2 Justified Assumptions
- 1) [
]
- 2) [
]
Furthermore, the original repair lasted 31 years. The new nozzle and its weld connection is stronger and therefore suitable for longer service life.
- 3) [
]
- 4) [
] an ambient temperature of 120°F. The small gap below the new pressure boundary and above the outer sleeve is modeled with a [
] heat transfer film coefficient [
] applied to the surface as shown in Figure 6-8 (n_gap). [
]
5)
The autogenous weld (Reference [9]), which is not being qualified in this analysis, is assumed to be the material of the replacement nozzle, [
] (Reference [11]).
The thermowell to nozzle weld design calculation includes the following justified assumptions:
- 1) [
]
- 2) [
]
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 18
[
]
Additionally, minor justified assumptions may be stated throughout the calculation as needed.
3.3 Modeling Simplifications 1)
The outer diameter of the nozzle at the pressure boundary is [
] inches (Reference [9]). The slight transition to a larger nozzle diameter above the weld/pressure boundary is not modeled. This produces results with negligible differences.
2)
The inside penetration bore diameter was modeled to [
] inches in accordance with the 1992 repair drawing (Reference [10]). This bounds Units 2 and 3 with a penetration bore diameter of [
] inches (Reference [9]). However, the 1992 repair for Unit 1 was over bored to a diameter of [
] inches [9].
The difference between the modeled geometry and the actual geometry for Unit 1 is [
] inches. The counter bore at the weld/pressure boundary is [
] inches, which is greater than the inside penetration bore. This difference in the inside penetration bore diameter has a negligible impact on results because the nozzle is constrained at the weld pad pressure boundary and free to move along the inside penetration bore and sleeve since there is a diametric clearance of = 1.175 - 1.157 =0.018" between the sleeve ID and the nozzle OD near the inner bore.
3)
The outer sleeve (i.e. press fit), which is no longer part of the pressure boundary, has an inside diameter of
[
] inches (Reference [9]). The outside diameter is modeled up to the inside penetration bore of
[
] inches. The outer diameter of the outer sleeve for Unit 1 and Units 2 and 3 are [
] inches and [
] inches, respectively (Reference [9]). This results in a range of thickness from [
] to
[
] inches. The modeled thickness is [
] inches. The outer sleeve is also modeled up to the counterbore fillet which is modeled as [
] inches from the pressurizer new weld pad surface to counterbore fillet and within the tolerance of the dimension shown in Reference [9]. These differences have a negligible impact on results. The interference fit (i.e. press fit) and the associated radial and hoop stresses were not modeled as the effects are negligible.
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 19 4.0 DESIGN INPUTS 4.1 Code Classification Based on Section 3.0 of the Design Specification (Reference [11]), the PZR is a Section III Class 1 vessel in accordance with the 1974 Edition with Addenda through Winter 1975, Reference [12], and the penetration modification shall be in accordance with Class 1 vessels of Section III of the 2013 Edition, Reference [4]. Reference
[4] was used for all fatigue curves since no differences were noticed between Reference [12] and Reference [4] with respect to [
] Based on Section 5.0 of the Design Specification (Reference [11]), the physical and mechanical properties of the original pressurizer material shall be taken from Section III of the 1971 Edition with Addenda through Winter 1973, Reference [13].
4.2 Design Conditions Design Temperature
= 700
[14] (Section 4.1, p. C-11)
Design Pressure
= 2500 psia
[14] (Section 4.1, p. C-11) 4.3 Geometry Geometry of the PZR temperature nozzle replacement and thermowell weld is per References [5], [9], and [10] and the replacement/repair itself is illustrated in Figure 4-1. Key geometry dimensions for the nozzle replacement are shown in Table 4-1. Figure 4-2 illustrates key dimensions of the thermowell.
Temperature Nozzle
[5], [9], [10]
Repair Implementation
[6]
Table 4-1: Geometry Key Dimensions For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 20 Figure 4-1: PZR Temperature Nozzle Replacement and Thermowell For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 21 4.4 Materials The new and existing materials within the region of the nozzle replacement/repair are listed in Table 4-2. See notes for further clarification on materials used in the model.
Table 4-2: Material Designations For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 22 4.4.1 Material Properties Material property symbols and units are listed in Table 4-3. Material properties for the materials designated in Table 4-2 are listed in Table 4-4 through Table 4-8.
The 1971 Section III Code Edition (Reference [13]) does not provide data for Poissons ratio or density. Therefore, in some cases, physical material properties for the existing materials are taken from the later 2013 Code edition (Reference [15]). Density is only listed at room temperature and is calculated below for the entire temperature range.
Temperature dependent specific heat is also calculated below for the entire temperature range using the noted unit systems in brackets.
Density Calculation (for all temperatures greater than 70).
() = ()/(1 + () ())
Where:
()
= Density at temperature T
()
= Density at room temperature
()
= Coefficient of thermal expansion at temperature T
= Change in temperature from room temperature to temperature T Specific Heat Calculation:
= /( )
Where:
= Specific heat
[/ ]
= Thermal conductivity
[/ ]
= Thermal diffusivity
[/]
= Density
[/]
Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 23 Table 4-3: Material Property Symbols and Units Symbol Property Unit T
Temperature
E Youngs Modulus 10 ksi
Poissons Ratio Unitless
Density lbm/in
Mean Coefficient of Thermal Expansion 10in/in/
k Thermal Conductivity BTU/hr in C
Specific Heat BTU/lb S
Design Stress Intensity ksi S
Yield Stress ksi S
Ultimate Stress ksi Table 4-4: Material Properties for [
]
T E
k C
70 29.9 0.3 0.28 6.07 2.625 0.114 26.7 50 80 100 29.8(4) 0.3 0.28 6.13 2.583 0.116 26.7 50 80 200 29.5 0.3 0.279 6.38 2.500 0.118 26.7 47.1 80 300 29.0 0.3 0.279 6.6 2.425 0.123 26.7 45.2 80 400 28.6 0.3 0.278 6.82 2.342 0.127 26.7 44.5 80 500 28.0 0.3 0.277 7.02 2.267 0.131 26.7 43.2 80 600 27.4 0.3 0.277 7.23 2.183 0.135 26.7 42 80 650 27.0(4) 0.3 0.276 7.33 2.150 0.138 26.7 41.4 80 700 26.6 0.3 0.276 7.44 2.108 0.141 26.7 40.6 80 Reference
[13]
Table I-6.0
[15] (1)
Table PRD
[15] (1)
Table PRD/
Calculated
[13]
Table I-5.0
[13] (3)
Table I-4.0 Calculated
[13]
Table I-1.1
[13]
Table I-2.1
[13] (2)
Table I-1.1 Note(s):
(1) 9DOXHVRIDQGDUHQRWIRXQGLQ5HIHUHQFH>13] and are taken from a more recent code year, Reference
[15].
(2)
Sis the minimum tensile specification listed.
(3)
Units converted to BTU/hr-in-.
(4)
Value interpolated.
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 24 Table 4-5: Material Properties for [
]
T E
k C
70 28.3 0.31 0.29 9.11 0.696 0.111 Not used in analysis 100 28.2(3) 0.31 0.29 9.16 0.7 0.112 200 27.7 0.31 0.289 9.34 0.742 0.115 300 27.1 0.31 0.288 9.47 0.779 0.118 400 26.6 0.31 0.287 9.59 0.817 0.121 500 26.1 0.31 0.286 9.7 0.853 0.125 600 25.4 0.31 0.286 9.82 0.892 0.127 650 25.1(3) 0.31 0.285 9.87 0.908 0.129 700 24.8 0.31 0.285 9.93 0.925 0.13 Reference
[13]
Table I-6.0
[15](1)
Table PRD
[15] (1)
Table PRD/
Calculated
[13]
Table I-5.0
[13] (2)
Table I-4.0 Calculated Note(s):
(1)
Values of DQGDUHQRWIRXQGLQ5HIHUHQFH>13] and are taken from a more recent code year, Reference
[15].
(2)
Units converted to BTU/hr-in-.
(3)
Value interpolated.
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 25 Table 4-6: Material Properties for [
]
T E
k C
70 31.7 0.31 0.3 7.13 0.7 0.115 Not used in analysis 100 31.5(3) 0.31 0.3 7.2 0.708 0.114 200 30.9 0.31 0.299 7.4 0.75 0.119 300 30.5 0.31 0.298 7.56 0.792 0.122 400 30 0.31 0.298 7.7 0.833 0.125 500 29.6 0.31 0.297 7.8 0.875 0.129 600 29.2 0.31 0.296 7.9 0.917 0.131 650 28.9(3) 0.31 0.296 7.95 0.938 0.133 700 28.6 0.31 0.296 8
0.958 0.135 Reference
[13]
Table I-6.0
[15](1)
Table PRD
[15] (1)
Table PRD/
Calculated
[13]
Table I-5.0
[13] (2)
Table I-4.0 Calculated Note(s):
(1) 9DOXHVRIDQGDUHnot found in Reference [13] and are taken from a more recent code year, Reference
[15].
(2)
Units converted to BTU/hr-in-.
(3)
Value interpolated.
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 26 Table 4-7: Material Properties for [
]
T E
k C
70 30.3 0.31 0.293 7.7 0.567 0.107 23.3 35 85 100 30.0(2) 0.31 0.293 7.8 0.583 0.109 23.3 35 85 200 29.6 0.31 0.292 7.9 0.633 0.112 23.3 31.7 85 300 29.2 0.31 0.291 7.9 0.683 0.115 23.3 29.8 84 400 28.8 0.31 0.291 8
0.733 0.119 23.3 28.6 82 500 28.3 0.31 0.29 8.1 0.783 0.122 23.3 27.9 80.8 600 27.9 0.31 0.289 8.2 0.833 0.125 23.3 27.6 80.2 650 27.7(2) 0.31 0.289 8.3 0.858 0.126 23.3 27.5 80 700 27.5 0.31 0.288 8.3 0.883 0.127 23.3 27.5 79.8 Reference
[15]
Table TM-4
[15]
Table PRD
[15]
Table PRD/
Calculated
[15]
Table TE-4
[15] (1)
Table TCD Calculated
[15]
Table 2B
[15]
Table Y-1
[15]
Table U
Note(s):
(1)
Units converted to BTU/hr-in-.
(2)
Value interpolated.
Table 4-8 lists the material properties for the [
]
as defined in Reference [17] p. C-1 and the appropriate ASME Code.
Table 4-8: Material Properties for [
]
T E
70 28.3 8.5 20.0 30.0 700 24.8 9.76 16.3 18.2 4.4.2 ASME Code Allowable Stresses The allowable stresses listed in Table 4-9, are per NB-3222 and NB-3223, respectively (Reference [4]). Allowable stresses are calculated at the Design temperature of [
] In the case of Level B, NB-3223(a)(1) allows for an increase of 110% of Level A stress intensity limits if Level B pressure exceeds design pressure. Conservatively, this increased allowable stress intensity is not used.
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 27 Table 4-9: ASME Code Allowable Stresses for Level A and Level B Conditions Material
+ + ()
80.1 69.9 48.9 4.5 Loads 4.5.1 Design Loads Design pressure and temperature are [
] which are located in MN725-A00945 Rev. 8 (Page 32 of 144) of Reference [8].
The external loads on the nozzle and thermowell are from seismic inertia and are calculated based on the geometry of the thermowell from its design Reference [17]. SSE loads are calculated as 2(OBE) based on discussion in Reference [8] (Sections 4.7.1, 4.7.2, p. C-17) which indicates that SSE horizontal acceleration is 2.0 g and OBE horizontal acceleration is 1.0 g whereas SSE vertical acceleration is 1.33 g and OBE vertical acceleration is 0.67 g.
Evaluation below demonstrates that actual loads are bounded.
Table 4-10: Deadweight Loads Line No.
Load Case Fa (lb)
(axial)
Fb (lb)
Fc (lb)
Ma (ft-lb)
(torsion)
Mb (ft-lb)
Mc (ft-lb)
RC-019/RC-020 Deadweight 258 2
0 0
0 0
RC-021/RC-023 Deadweight
-10 0
0 0
2
-2 RC-022 Deadweight 156
-1 0
28.8 0
0 RC-029 Deadweight 314 86 0
0 0
8 Maximum Deadweight 314 86 0
28.8 2
8 For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 28 Table 4-11: Seismic Loads Line No.
Load Case Fa (lb)
(axial)
Fb (lb)
Fc (lb)
Ma (ft-lb)
(torsion)
Mb (ft-lb)
Mc (ft-lb)
RC-019/RC-020 Seismic OBE 61 0
317 0
29 0
RC-021/RC-023 Seismic OBE 2
9 15 44 11 6
RC-022 Seismic OBE 77 0
206 29 19 0
RC-029 Seismic OBE 187 43 51 13 5
4 Maximum Seismic OBE 187 43 317 44 29 6
Deadweight + OBE Seismic Moments:
Ma
= 28.8 ft-lb + 44 ft-lb
= 72.8 ft-lb Mb = 2 ft-lb + 29 ft-lb
= 31 ft-lb Mc = 8 ft-lb + 6ft-lb
= 14 ft-lb Total
= 80.4 ft-lb Deadweight + SSE Seismic Moments Ma
= 28.8 ft-lb + 2(44 ft-lb)
= 116.8 ft-lb Mb
= 2 ft-lb + 2(29 ft-lb)
= 60 ft-lb Mc
= 8 ft-lb + 2(6 ft-lb)
= 20 ft-lb Total
= 132.8 ft-ln Note: Ma, Mb, Mc combined SRSS in accordance with Section 4.7 of Reference [8] (pp. C-17 and C-18).
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 29 Figure 4-2: Thermowell and Temperature Detector Information Dimensions from [17] (p. B1 and p. 15)
Thermowell Approximate Weight:
Wt = /4(((1.315 in)(0.5 in))(1.75 in) + ((0.75 in)(0.25 in))(16.5 in))(0.283 lb/in) = 2.4lb Thermowell and Detector Combined Weight:
Total Weight = 2.4 lb + 59.4 oz / 16 oz / lb = 6.1 lb DW + SSE Seismic Load:
M = (3 g)(6.1 lb)(2.25 in)/12 in/ft = 3.4 ft-lb < 80.4 ft-lb (DW + OBE Moment Load)
OK Where:
DW + SSE Acceleration = 1 g (DW) + 2 g (SSE) = 3g (from above)
Distance to CG = 2.25 in (Fig 4-2)
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 30 4.5.2 Operating Transient Loads Maximum pressure and temperature values for all operating loading conditions are listed in Table 4-12. Table 4-13 summarizes transients included for evaluation with the corresponding number of cycles as given in Report 2000645.301 (References [18]) and Report 2000645.310 (Reference [19]). This table also defines acronyms used going forward in the calculation. Time points, temperatures, and pressures that define the transients are presented in Table 4-15 through Table 4-28.
Insurge/Outsurge transient temperature and heat transfer coefficients are taken from N001-0604-00913 (Reference
[8]) and are included in Table 4-25 through Table 4-27.
Loss of Secondary Pressure transient is taken from MN725-A00945 Rev. 8, Reference [8]. All remaining transient definitions are taken from Reference [18]. The initial time step is offset to a nonzero value. Additional interpolated time points may be added to the previously defined transients. In addition to this, time points may be added to the existing transient definition to extend to a steady state condition.
With respect to the PZR, no meaningful Insurge/Outsurge transient are listed in Table 7 of Reference [18]. The transients consist of two groups of constant pressure and temperature. The first group is [
]
and the second group is [
] Therefore, the Insurge/Outsurge temperature and heat transfer coefficient profiles, with constant pressure, found in N001-0604-00913 (Reference [8]) are used. Applicable cases for the temperature nozzle region, according to N001-0604-00907 (Reference [8]) are [
] These cases correspond to the cycles in [
] respectively, in Reference [19].
Stratification loads listed in Report 2000645.301 (Reference [18]) and Report 2000645.310 (Reference [19]) were considered to be negligible in the vessel shell because they primarily affect the surge line which is far away from the temperature nozzle penetration. ASME Code supports this exclusion because the surge nozzle is meridionally
[
] from the temperature nozzle penetration (N001-0604-734 within Reference
[8]). This is greater than the ASME Code primary stress local limit of 2.5, where R is the mean vessel radius and t is the thickness of the wall (Reference [4] Paragraph NB-3332.1(c)). Therefore,
[
] Thus the stratification loads in Reference [8] can be considered non-local to the temperature nozzle repair and negligible to this analysis.
Further breakdown of the Insurge/Outsurge transient cycles are shown in Table 4-14. All transients are prorated to
[
] rounded up for conservatism, and then summed for a total cycle count in each group.
Table 4-12: Maximum Pressure and Temperature For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 31 Table 4-13: Transients for Fatigue Evaluation For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 32 Table 4-14: Insurge/Outsurge Transients Table 4-15: Heat Up (HU) Transient Definition For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 33 Table 4-16: Cooldown (CD) Transient Definition Table 4-17: Loss of Trips (LOT) Transient Definition For Information Only
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Page 34 Table 4-18: Other Plant Trips (OTRIP) Transient Definition For Information Only
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Page 35 Table 4-19: Loading (L) Transient Definition For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 36 Table 4-20: Unloading (UL) Transient Definition Table 4-21: 10% Step Change (ST_UP) Transient Definition For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 37 Table 4-22: 10% Step Change (ST_DWN) Transient Definition Table 4-23: Leak Test (LT_UP) Transient Definition Table 4-24: Leak Test (LT_DWN) Transient Definition For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 38 Table 4-25: Insurge/Outsurge1 (IN_OUT1) Transient Definition Table 4-26: Insurge/Outsurge2 (IN_OUT2) Transient Definition For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 39 Table 4-27: Insurge/Outsurge7 IN_OUT7 Transient Definition For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 40 Table 4-28: Loss of Secondary Pressure (LSP) Transient Definition For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 41 4.5.3 Plant Transient Cycles Additional transients, relevant to the Thermowell design analysis, are taken from Table 1 in Reference [14] (p. C-30). As shown in the table, the significant normal and upset condition transients applicable to the instrumentation nozzle weld are the heatup, cooldown, reactor trip/loss of reactor coolant flow/loss of load, OBE, and plant leak test. This gives a total number of 1880 cycles, which will be used in the fatigue analysis. Note that the 10 cycles of hydrotest are not required to be considered in accordance with NB-3657 and NB-3226 of Reference [4].
[
]
Table 4-29: Plant Transient Cycles Transient Lifetime Occurrences Condition Reference [14]
Figure/Paragraph Heatup 500 Normal Figure 2 Cooldown / Flooding 500 Normal Figure 2 Plant Loading 1E6 Normal
+/- 100 psi
+/- 20 Plant Unloading 10% Step Load Increase 10% Step Load Decrease Normal Plant Variation Reactor Trip 480 Upset Figure 3 Loss Reactor Coolant Flow Loss of Load Operational Basis Earthquake 200 Upset N/A Safe Shutdown Earthquake 1
Faulted N/A Safe Shutdown Earthquake and Pipe Rupture 1
Faulted N/A Loss of Secondary Pressure 1
Faulted Figure 4 Hydrostatic Test 10 Test N/A Plant Leak Test 200 Test Isothermal Conditions 4.5.4 External Loads The use of the design loads is very conservative, as the note at the bottom of p. 144 of Reference [8] indicates that there are no specified external loads for either the temperature nozzle or thermowell weld, other than seismic and vibratory induced inertia which are already addressed in this report.
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 42 5.0 COMPUTER USAGE 5.1 Software This calculation uses the following software:
x Controlled installation of ANSYS Mechanical Enterprise, Version 19.2 at
/nfs/system/ansys_inc/v192/ansys/bin/ansys192 on the Lynchburg HPCv2 (RHEL 7.x machines) controlled platform per Reference [20].
The software is being used within its specified range of applicability as defined by validation and verification requirements defined in Reference [20]. While ANSYS version 19.2 is not the most recent approved version of ANSYS listed on EASI (Engineering Application Software Index), use of this version of ANSYS is acceptable since all error notices up to date have been reviewed and concluded that none of the errors may create erroneous results for the intent of this calculation.
5.2 Computer Files All computer files are listed in Appendix B and are located in the Framatome Inc. ColdStor system in folder
\\cold\\General-Access\\32\\32-9000000\\32-9373538-003\\official.
No specific computer files were used for the generation of the original 32-9370512-000 and 32-9370429-000 reports.
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 43 6.0 CALCULATIONS 6.1 Primary Stress Qualification 6.1.1 Primary Stress Evaluation The purpose of this section is to verify the primary stress requirements for the design shown in Reference [6]. The replacement nozzle is shown in Reference [5]. The verification is based on the requirements of Reference [4] and as specified in Reference [11]. More specifically, the following are included in the calculation:
1)
Partial penetration J-groove weld [
]
2)
New nozzle [
]
3)
New weld pad [
]
4)
Stresses in the vicinity of the opening [
] are satisfied by reinforcement requirements in Section 6.1.1.2.5 and the effect of corrosion over a period of [
] is addressed.
5)
The pressure boundary weld between the thermowell and nozzle is evaluated in Section 6.2.
6.1.1.1 Loading Pressure loads are the only substantial loads, for evaluation of primary stresses, explicitly performed in this calculation on the nozzle. Section 6.3 examines thermal loads for continued operation.
6.1.1.2 Primary Stress Calculation There are no substantial external piping loads on the nozzle, as shown in Section 4.5 for seismic inertia. Shear stress due to internal pressure is considered on the nozzle weld. Primary stresses are also considered for the nozzle and are satisfied with the tentative pressure nozzle thickness calculation. Note, tentative is the verbiage used in ASME Section III NB-3324 (Reference [4]) to refer this calculation.
6.1.1.2.1 New J-Groove Weld Weld Size (NB-3352, Reference [4])
This weld needs to satisfy the minimum dimension requirements of Figure NB-4244(d)-1(e) and Section NB-3352.4(d)(2).
The nozzle external dimensions will not be known until field drilling of the weld pad counterbore. However, the wall thickness can be determined based on the nominal counterbore ID (Reference [6]) and the nominal nozzle clearance (Reference [21]). Therefore, the expected nominal nozzle wall thickness is:
t=
(())
=
The J-groove weld depth and fillet leg shall be no less than [
] The actual values are
[
] respectively. This requirement is satisfied.
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 44 The weld length along the nozzle OD shall be no less than [
] The actual value is [
] This requirement is satisfied.
The minimum required weld throat thickness (t) is the lowest values between 0.7tDQG t=
[
] The minimum actual value of tis calculated to be:
t= legsin tanleg leg
=
The minimum fillet weld dimensions, taken from Reference [6] are shown in Figure 6-1: Fillet Weld Dimensions.
This requirement is satisfied.
Figure 6-1: Fillet Weld Dimensions 7KHJDS EHWZHHQWKHRXWHUVOHHYHUHPQDQWDQGWKHVWHSLQWKHQR))OH2'DVGHSLFWHGRQ)LJXUH1%-4244(d)-
1(e), Reference [4@VKDOOEHLQWKHUDQJHRIDQGt [
] The gap is assured by the calculation of Dim. Y (Reference [5]) in Sequence C10-00 in the traveler (Reference [21]). Based on worst case as-built dimensions, the minimum gap was calculated to be [
] This requirement is satisfied.
The code minimum size of the rradius requirement is 1/16. Reference [6] indicates [
] min radius. The requirement is thus satisfied.
Nozzle Diametric Clearance (NB-3337.3(a), Reference [4])
)RUDQR))OH2'EHWZHHQDQGWKHPD[LPXPGLDPHWULFFOHDUDQFHRISHU1%-3337.3(a) is satisfied, according to Appendix C in Reference [21].
6.1.1.2.2 Weld Shear Stress Weld Shear Stress (NB.3227.2, Reference [4])
The weld shear stress line is conservatively taken as the minimum J-groove weld depth, shown in red in Figure 6-2.
The shear stress is calculated below:
F= P 4 [D + tol + 2(grind) + 2(corr)(years)]
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 45 Where:
P
= design pressure of 2500 psia Reference [8]
tol
= weld pad counterbore tolerance of 0.017 in Reference [6]
[
] Reference [6], note 12 D
= design diameter of the weld pad counterbore of [
]
Reference [6]
corr
= the corrosion rate of [
]
Reference [26]
years
= the longest possible duration of corrosion effect Section 3.2 The shear stress is:
=
=
(Unit 1)
=
=
(Unit 2)
=
=
(Unit 3)
Where:
l
= the shear line, shown in red in Figure 6-2 which is conservatively chosen to be the J-groove weld depth of [
]
Reference [6]
d
= the nozzle diameter taken as the nominal weld path IDcb [6] - clearance [21]
= [
]
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 46 Figure 6-2: Weld Shear Stress Line The weld material is listed as [
] in Reference [11]. Sm is the design stress intensity of 23300 psi (Reference [15]) at design temp 700°F (Reference [8]) for [
] which is equivalent to [
]
The allowable shear per NB-3227.2 is 0.6S= 0.6(23300) = 13980 psi, which is greater than the calculated shear stress for any unit. Therefore, the shear stress limit is satisfied for all three units. Note that the weld pad area attached to the vessel is by inspection larger than the calculated nozzle weld shear area and therefore bounded by the nozzle weld.
6.1.1.2.3 Nozzle Pressure Wall Thickness Tentative Nozzle Pressure Thickness (NB-3324.1, Reference [4])
The tentative nozzle thickness is:
t=
.=
Where:
P
= the design pressure of 2500 psia Reference [8]
r
= the nozzle inside radius of 0.825/2 = 0.4125 in Reference [5]
S
= the design stress intensity of 23300 psi at design temp 700 for [
] Reference [15]
Nozzle thickness at the pressure boundary:
t,=
(IDtolclearance) (d + tol) 2 Where:
ID
= the nominal wel d pad counterbore of [
]
Reference [6]
tol
= the weld pad counterbore tolerance of [
]
Reference [6]
tol
= the nozzle tolerance of [
]
Reference [5]
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 47 clearance
= is the assumed final machining clearance of the nozzle OD of [
]
Reference [21]
d
= the nozzle inside diameter of [
]
Reference [5]
The minimum nozzle thickness is significantly larger than the calculated tentative nozzle thickness. Since pressure load is the only considerable load imposed on the nozzle, the primary stress criteria for the replacement nozzle are satisfied.
6.1.1.2.4 Evaluation of Nozzle Counterbore Nonconformity Per Reference [22], the nozzle counterbore, Figure 6-3: Counterbore Dimensions, after final machining is out of tolerance. Stress intensity due to pressure is calculated and compared to primary general membrane stress criteria of 1.0*S= 23300 psi, paragraph NB-3221.1, Reference [4]. The design stress intensity is taken from Reference
[15] at design temperature of 700°F. The counterbore diameter per Reference [22] is [
] inches. The outside diameter of the nozzle at the place of the counterbore is [
] inches per Reference [5].
1)
Calculation of hoop stress:
=
=
2)
Calculation of axial stress:
=
=
(
)
=
3)
Determination of radial stress:
The radial stress is conservatively considered as compressive design pressure of the coolant.
= P = 2500 psia 4)
Determination of Stress Intensity:
SI = =
The calculated Stress Intensity is below the general primary membrane stress intensity limit of 23300 psi.
Where:
= calculated hoop stress due to internal pressure, psi
= calculated axial stress due to internal pressure, psi
= calculated radial stress due to internal pressure, psi A
= calculated area exposed to internal pressure, in F
= calculated load due to internal pressure, lb SI
= calculated Stress Intensity in the counterbore region, psi P
= internal design pressure, [
]
Reference [8]
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 48 d
= measured counterbore diameter of [
]
Reference [22]
D
= nozzle outside diameter of [
] considering tolerance Reference [5]
t
= thickness of the nozzle at the counterbore, t = (Dd)/2 = [
]
Figure 6-3: Counterbore Dimensions 6.1.1.2.5 Reinforcement Requirements for OpeningsSection III, Subsection NB, Article NB-3000, Paragraph NB-3332.1 (Reference [4]) sets requirements for openings not requiring reinforcement. There are three regions of the penetration that may be exposed to the coolant fluid for different time periods.
1)
Region one is the original J-weld at the inside surface of the vessel. Since the weld is constructed using PWSCC susceptible material, it is conservatively assumed that corrosion started at the very beginning of the service. This is 1985 for Unit 1, 1986 for Unit 2, and 1987 for Unit 3, as laid out in the Assumptions (Section 3.0). Corrosion of the [
] behind the [
] of the weld caused corrosion of the weld preparation geometry for [
] and, as such, its enlarged size is calculated.
2)
Region two is the bore performed as part of the [
] repair that is considered to be drilled to [
]
(Reference [23]) diameter. It is conservatively assumed to corrode from the very beginning of the repair service as the sleeve autogenous weld is made of PWSCC susceptible material. Corrosion duration at this region behind the original sleeve is therefore [
] Bore enlargement is calculated using the respective number for each unit.
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 49 3)
Region three is the new counterbore performed during this repair. This area will be subject to corrosion for the rest of the plant life i.e. [
]
Paragraph NB-3332.1 (D UHTXLUHVWKDWDVLQJOHRSHQLQJKDVDGLDPHWHUQRWH[FHHGLQJ¥5WZKHUH5LVWKHPHDQ
radius of the vessel and t is the nominal vessel thickness. Per Reference [10], the mean radius of the vessel base PHWDOLV 7KHUHIRUHWKHSHQHWUDWLRQERUHGLDPHWHUVKDOOQRWH[FHHG [
]
The maximum bore diameter is [
] per Reference [23]. The bore diameter will experience a corrosion rate of [
] per year (Reference [26]) over the vessel service life, beginning in [
] when repairs were made. Therefore, the maximum bore diameter will corrode to a size of Note, that this is greater than the maximum counterbore of [
] (Reference [6]), which would experience corrosion beginning in [
] The maximum counterbore would corrode by the end of the vessel life to By comparison, the original bore at the beginning of vessel life of [
] as specified in the manufacturers drawing (E-78373-641-001-02 within Reference [8] would corrode [
] by the end of the vessel life to
[
]
Regarding the original J-groove weld, it is assumed that the J-groove weld material is not structural due to PWSCC.
The original J-groove weld preparation geometry drawing with detailed dimensions is not available currently. A digitizing technique was utilized to measure the maximum diameter of the preparation. The maximum diameter out of multiple measurements was determined as [
] on the original J-groove weld on the inside wall of the pressurizer. Assumed [
] corrosion (as this weld material existed at the beginning of plant operation) would corrode the diameter to [
] It is concluded that the maximum penetration dimension not requiring reinforcement is bounding the expected configuration after [
] of corrosion due to exposure to the reactor coolant.
Paragraph NB-D DOVRVHWVUHTXLUHPHQWVIRUWZRRUPRUHSHQHWUDWLRQVZLWKLQDQ\\FLUFOHRIGLDPHWHU¥5W
Reference [10] does not indicate any penetration within this circle. Note that digitization of this drawing was utilized as more detailed drawing is not available currently.
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 50 Paragraph NB-3332.1 b) sets additional requirements for closely spaced penetration. As stated above, there are no additional closely spaced penetrations.
Paragraph NB-F UHTXLUHVWKDWQRXQUHLQIRUFHGRSHQLQJVKDOOKDYHLWVFHQWHUFORVHUWKDQ¥5WWRWKHHGJH
of a locally stressed area in the shell. Locally stressed area is defined within paragraph NB-3332.1 as any area in the shell where the primary local membrane stress exceeds 1.1S. Exceedance of this primary stress limit would be a result of a local thinning of a shell thickness below its tentative pressure thickness. The cylindrical portion of the vessel thickness is [
] This thinnest spherical portion of the vessel is [
] as depicted in Figure 6-4. The tentative thickness of the cylinder is [
] of the spherical closure per Reference [1]. The spherical part of the vessel is evidently significantly thicker that the minimum required thickness. Reference [10] does not indicate any other possible locations suspect of locally stressed areas. Therefore, the spherical part of the vessel and its transition to the cylinder does not result in locally stressed areas. Furthermore, based on pages 9 and 10 of the original stress report (N001_6.04-73-1) which is contained in Reference [8] the maximum reported PL+Pb anywhere in this area is [
] for Design conditions and [
] for Faulted (vs. 1.1S= 29.37 ksi) demonstrating that this is not a locally stressed area.
It is therefore concluded that the temperature nozzle penetration does not require reinforcement.
Figure 6-4: Pressurizer Drawing Excerpt [10]
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 51 6.1.2 Interference Check Axial Interference Between Nozzle and Remaining Sleeve Replacement nozzle material: [
]
Existing sleeve material: [
]
7KHWKHUPDOH[SDQVLRQFRHIILFLHQW [-6 in/in/°F [
] from Reference [15]
A conservative sleeve length, with dimensions from Reference [6], is calculated as follows:
L= t+ tCB=
Where:
t
= the nominal thickness of the pressurizer at nozzle of [
]
Reference [6]
t
= the maximum thickness of the new weld [
]
Reference [6]
CB
= the minimum counterbore depth [
]
Reference [6]
A conservative nozzle length (L) is calculated as the length of the J-groove fillet weld to the end of the counterbore with dimensions taken from Reference [6].
L= CB,_+ L=
Where:
CB_= the maximum counterbore depth of [
]
Reference [6]
L
= is the minimum length of the fillet weld along the nozzle of [
]
Reference [6]
7KHWHPSHUDWXUHGLIIHUHQFHLV7 [
]
The maximum length change due to thermal expansion is:
L = LT + LT =
Where:
700°F
= design condition temperature Reference [8]
[
]
= assumed temperature during installation Section 3.2
= coefficient of thermal expansion of 8.3E-6 Reference [15]
The remaining gap between contact with the nozzle and the remaining sleeve must be no less than 1/16.
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 52 6.1.3 Fatigue Assessment The ASME Code places a limit on secondary stresses to prevent failure by excessive distortion (thermal ratchet) caused by the repeated application of loads. The Code also limits peak stresses, through the cumulative fatigue usage factor, to prevent failure by fatigue. Reference [24] documents ASME Section III qualification of the original repair and concluded that the predicted bounding primary plus secondary stress is [
] The limit of 3Sm is 69.9 ksi.
6.1.4 Corrosion Evaluation Corrosion effects have been generated in Reference [26] as surface degradation rate and are considered in the reinforcement requirements and shear force calculation. Corrosion is conservatively assumed on the base metal surfaces that are exposed to coolant fluid due to PWSCC susceptible weld material. It is conservatively assumed that ingress of coolant fluid occurred at the beginning of the service of PWSCC susceptible weld material. Corrosion has negligible impact on the replacement nozzle and new weld pad.
6.2 Thermowell to Instrument Nozzle Weld Design Analysis 6.2.1 Pressure Sizing Calculation As discussed in Section 2.0, the required weld size is determined by calculating the required thickness of an equivalent pipe and then specifying the weld in accordance with ASME NB-4427, which requires the leg length to be greater than or equal to 1.09 times the nominal wall thickness of the pipe.
Pipe Minimum Thickness [4] (NB-3641.1):
t=
PD 2(S+ Py) + A =
Where:
P
= design pressure of 2500 psia Reference [14]
D
= outside diameter [
]
[
]
Reference [5]
S
= Design Stress Intensity = 16.3 ksi Section 4.4.1 y
= 0.4
[4] (NB-3641.1)
A
= Additional compensatory thickness = 0
[4] (NB-3641.1)
Required Weld Size The typical pipe schedule for these design conditions (P = 2500 psia, T = 700 ZRXOGEH6FK$GLDPHWHU
Sch 160 pipe has a nominal thickness (t RIZKLFKH[FHHGVWKHUHTXLUHGWKLFNQHVVFDOFXODWHGDERYH7KLVLV
considered as the nominal thickness when determining the weld size in accordance with NB-4427.
Required = 1.09t=
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 53 Ratio Ratio = Required Actual
=
Where:
Actual
= the design weld size of 0.375 in Reference [6]
$VVKRZQKHUHLQWKHWKLFNQHVVRID1366FKSLSHLVWLPHV WKHUHTXLUHGWKLFNQHVVGXHWR
pressure for this FRQQHFWLRQ7KHUHIRUHFRQVLGHULQJWKHWKLFNQHVVRID1366FKSLSHSURYLGHVDFRQVHUYDWLYH
basis for the calculation of required weld size.
6.2.2 Stress Evaluation As shown in Reference [14], and discussed in Section 4.5.1 of this document, the temperature instrument nozzle does not have substantial external loads. However, this analysis conservatively applies the deadweight plus seismic loads shown in Section 4.5.1 for analysis purposes. As discussed in Section 2.0, the evaluation is performed in accordance with NB-3600 of Reference [4] and [15].
6.2.2.1 NB-3652 Design Conditions (Eq. 9)
B1 PD 2t + B2 D 2I M=
< 1.5S= 24.4 ksi Allowable = 1.5S= 1.5(16.3 ksi) = 24.4 ksi Ratio = [
] / 24.4 ksi = [
]
Where:
B1
0.75(t/C)
Reference [4] (Table NB-3681(a)-1)
B2
1.5(t/C)
Reference [4] (Table NB-3681(a)-1)
C
= Weld Leg = [
]
Reference [6]
M
= DW + OBE Resultant Moment = 80.4 ft-lb Section 4.5.1 P
= Design Pressure = 2500 psia Section 4.2 D
= [
]
t
= [
]
D
= [
]
I
= [
]
Sm
= the Design Stress Intensity at Design Conditions = 16.3 ksi Section 4.4.1 For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 54 6.2.2.2 NB-3653.1 Level A Service Limits (Primary + Secondary Stress Intensity Range) (Eq 10)
C1 PD 2t
+ C2 D 2I M+ C3ElTTl Allowable = 3S= 3(16.3 ksi) = 48.9 ksi Ratio = [
] / 48.9 ksi = [
]
Where:
C1
1.8(t/C)
Reference [4]
C2
2.1(t/C)
Reference [4]
C3
= 2.0 Reference [4]
C
= the weld leg of 0.375 in Reference [6]
M
= Range of moment (Use DW + OBE Resultant Moment) = 80.4 ft-lb Section 4.5.1 P
= Range of Service Pressure (Use the design pressure) of 2500 psia Section 4.2 D
= [
]
t
= [
]
D
= [
]
I
= the moment of inertia of [
]
Eab
= Average Youngs Modulus at cold temperature on sides a/b of material discontinuity
= [
]
Section 4.4.1 D
= Thermal Expansion Coefficient on Side a of material discontinuity
= [
]
Section 4.4.1 E
= Thermal Expansion Coefficient on Side b of material discontinuity
= [
]
Section 4.4.1 Ta
= Range of Average Temperature on Side a of material discontinuity
= [
]
Section 2.0 Tb
= Range of Average Temperature on Side b of material discontinuity For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 55
= [
]
Section 2.0 Sm
= Design Stress Intensity at Design Conditions = 16.3 ksi Section 4.4.1 6.2.2.3 NB-3653.2 Level A Service Limits (Peak Stress Intensity Range) (Eq. 11)
Note that, since there is no flow at the weld joint evaluated herein, the thermal radial gradient stresses are negligible.
= K1C1 PD 2t
+ K2C2 D 2I M+
1 2(1 ) K3El1l + K3C3ElTTl +
1 1 l2l Where:
K1
= 3.0 Reference [4] (Table NB-3681(a)-1)
K2
= 2.0 Reference [4] (Table NB-3681(a)-1)
K3
= 3.0 Reference [4] (Table NB-3681(a)-1)
[
]
6.2.2.4 NB-3653.3 Alternating Stress Intensity
[
]
S=
=
6.2.2.5 NB-3653.4 Cumulative Usage Factor Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 56 6.2.2.6 NB-3656 Level D Service Limits (Eq 9)
B1 PD 2t + B2 D 2I M=
Allowable = Min(3Sm, 2Sy) = Min(3(16.3 ksi), 2(18.2 ksi)) = 36.4 ksi Ratio = [
] / 36.4 ksi = [
]
Where:
B1
0.75(t/C)
Reference [4] (Table NB-3681(a)-1)
B2
1.5(t/C)
Reference [4] (Table NB-3681(a)-1)
C
= the weld leg of [
]
Reference [6]
M
= DW + SSE Resultant Moment = 132.8 ft-lb Section 4.5.1 P
= the design pressure of 2500 psia Section 4.2 D
= [
]
t
= [
]
D
= [
]
I
= the moment of inertia of [
]
S
= the Design Stress Intensity at Design Conditions = 16.3 ksi Section 4.4.1 S
= Yield Strength at Design Conditions = 18.2 ksi Section 4.4.1 6.3 ASME Section III Life of Repair 6.3.1 Finite Element Model The finite element model (FEM) is developed using ANSYS 19.2 (Reference [20]) and is shown in Figure 6-5 and Figure 6-6. The solid model and mesh are developed in ANSYS Workbench and exported to classic ANSYS for definition of material properties, boundary condition, load application, solution, and post-processing.
Thermal element types for the model are SOLID90 (3-D 20-node brick thermal solid). Structural element types are SOLID186 (3-D 20-node structural solid) for the structural analysis. Thermal contacts and surface elements are CONTA174, TARGE170, and SURF152. Structural contacts and surface elements are CONTA174, TARGE170, and SURF154.
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 57 Figure 6-5: PZR Temperature Nozzle Finite Element Model For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 58 Figure 6-6: PZR Temperature Nozzle Finite Element Model (Close-Up of Weld) 6.3.1.1 Boundary Conditions One-fourth (90°) of the nozzle is modeled due to symmetry over the vertical-radial plane and horizontal plane. The vertical plane containing the vertical central axis of the PZR and the horizontal central axis of the PZR nozzle forms the first plane of symmetry and the horizontal plane of the horizontal central axis of the PZR nozzle forms the second plane of symmetry for the modeled portion. Thermal and structural boundary conditions are reflective on these planes.
6.3.1.1.1 Thermal Analysis
[
]
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 59
[
]
[
]
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 60 Figure 6-7: Thermal Load Application and Boundary Conditions For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 61 Figure 6-8: Thermal Load Application and Boundary Conditions Cont.
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 62 6.3.1.1.2 Structural Analysis Symmetric boundary conditions are applied to the planes of symmetry (n_symm_1, n_symm_2, and n_symm_3) in Figure 6-9. The PZR edge surface n_cp_cut_boundary is allowed to displace in the direction radial to the PZR center of curvature in Figure 6-9. Frictional standard contacts, with a coefficient of 0.2, are used on the same faces as those used in the thermal analysis. All surfaces in contact with pressurized reactor coolant fluid are subjected to pressure loads (n_surf_wetted in Figure 6-10). The upper end of the nozzle has pressure (PBO) applied to represent the hydrostatic end load from the piping closure (n_noz_end_cap in Figure 6-10) calculated as:
P= p NozID 2
/ NozOD 2
NozID 2
Where:
p
= the transient pressure.
NozID
= [
]
Reference [5]
NozOD
= [
]
Reference [5]
Figure 6-9: Surface with Constraints For Information Only
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Page 63 Figure 6-10: Surfaces of Pressure Application 6.3.2 Design Condition The ANSYS output file PV_Design_Cond.out listed in Appendix B.1 contains results of the Design Condition analysis using the loads designated in Section 4.5.1 and boundary conditions discussed in Section 6.3.1.1.2.
Figure 6-11 shows the stress intensity contours along with the deformed shape of the model (note that the deformation is not to scale). The results shown in Figure 6-11 verify correct behavior of the FEM and stress attenuation at regions distant from the nozzle location. The calculated stress intensity shown below falls within the stress range of the PZR and nozzle far from the weld. Stress formulas are from Reference [25] for a thick-walled vessel, where the maximum principal stresses are in order.
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Page 64 For PZR:
q a+ b ab
= q b
ab=
q
Stress Intensity = =
For nozzle:
q a+ b ab
= q b
ab=
q
Stress Intensity = =
Where:
q
= Pressure = [
]
B
= inside radius = [
]
a
= outside radius = [
]
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 65 Figure 6-11: Design Condition Stress Intensity Contours and Deformed Shape Plot 6.3.3 Thermal Analysis Thermal analysis files are listed in Appendix B.1 and designated as PV_**_TH.out, with ** equal to transient abbreviation given in Table 4-13. Thermal analyses use the temperature data given in Table 4-15 through Table 4-28 (files designated as PV_**_TR.inp are read into the files PV_**_TH.out) and boundary conditions listed in Section 6.3.1.1.1.
Temperature gradients between key locations are used to determine time points for the structural evaluation. Nodes selected are listed in Table 6-1 and thermal gradient locations are listed in Table 6-2. The locations are illustrated in Figure 6-12 and Figure 6-13. Thermal gradient files are listed in Appendix B.1 and are designated as PV_**_DT.out, with ** equal to transient abbreviation given in Table 4-13. Thermal gradient results are obtained from the output files and Appendix A contains the temperature and thermal gradient plots for all transients analyzed.
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 66 Table 6-1: Nodes for Temperature and Thermal Gradient Evaluation For Information Only
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Page 67 Table 6-2: Thermal Gradients For Information Only
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Page 68 Figure 6-12: Location Numbers for Evaluation of Thermal Gradients (Upper Region)
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Page 69 Figure 6-13: Location Numbers for Evaluation of Thermal Gradients (Lower Region) 6.3.4 Structural Analysis From thermal analysis results, time points are selected for structural evaluation based on peak thermal gradients.
Time points are also selected for maximum pressure and temperatures and any other remaining time points used to define the transient. The time points selected for the analyzed transients are listed in Table 6-3 through Table 6-16.
Structural analysis files are listed in Appendix B.1 and are designated as PV_**_ST.out, with ** equal to transient abbreviation given in Table 4-13. The structural analysis uses the pressure data given in Table 4-15 through Table 4-28 with files designated as PV_**_TR.inp and read into the files PV_**_ST.out. Nodal temperature data for time points are read into the structural file directly from the thermal analysis result files (PV_**_TH.rth).
Boundary conditions applied are listed in Section 6.3.1.1.2.
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Page 70 Table 6-3: Time Points for HU Structural Evaluation Table 6-4: Time Points for CD Structural Evaluation For Information Only
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Page 71 Table 6-5: Time Points for LOT Structural Evaluation Table 6-6: Time Points for OTRIP Structural Evaluation For Information Only
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Page 72 For Information Only
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Page 73 Table 6-7: Time Points for L Structural Evaluation For Information Only
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Page 74 Table 6-8: Time Points for UL Structural Evaluation For Information Only
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Page 75 Table 6-9: Time Points for ST_UP Structural Evaluation For Information Only
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Page 76 Table 6-10: Time Points for ST_DWN Structural Evaluation Table 6-11: Time Points for LT_UP Structural Evaluation For Information Only
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Page 77 Table 6-12: Time Points for LT_DWN Structural Evaluation Table 6-13: Time Points for IN_OUT1 Structural Evaluation For Information Only
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Page 78 Table 6-14: Time Points for IN_OUT2 Structural Evaluation For Information Only
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Page 79 For Information Only
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Page 80 Table 6-15: Time Points for IN_OUT7 Structural Evaluation For Information Only
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Page 81 Table 6-16: Time Points for LSP Structural Evaluation Information Only
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Page 82 6.3.5 ASME Code Evaluation The ASME Code stress analysis involves two basic sets of criteria:
1)
Assure that failure does not occur due to application of design loads.
2)
Assure that failure does not occur due to repetitive loading.
In general, the Primary Stress Intensity criteria of the ASME Code (Reference [4]) assure that the design is adequate for application of design loads. ASME Code criteria for cumulative fatigue usage factor assure that the design is adequate for repetitive loading.
The ANSYS post-processor is used to tabulate stresses along predetermined paths through the new J-Groove weld, temperature nozzle, and PZR shell and classify them in accordance with ASME Code Criteria. These path lines are shown in Figure 6-14 and Figure 6-15 and described in Table 6-17.
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Page 83 Table 6-17: Path Line and Node Identification for ASME Code Evaluation For Information Only
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Page 84 For Information Only
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Page 85 Figure 6-14: Path Lines on Front Face (0-Degree)
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Page 86 Figure 6-15: Path Lines on Side Face (90-Degree)
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Page 87 6.3.5.1 Primary Stress Criteria The primary stress evaluation was performed in Section 6.1.
6.3.5.2 Primary Plus Secondary Stress and Fatigue Usage Criteria 6.3.5.2.1 Primary Plus Secondary Stress Intensity Range (NB-3222.2)
The ANSYS fatigue module is used to calculate the maximum stress intensity range at each node of the selected path lines for all transients. The module complies with ASME Code Section III in calculating a stress intensity range. The Zero Stress State (ZSS) is also included in the main runs but not for the separate Insurge/Outsurge transients. ANSYS output files (listed in Appendix B.1) containing results of the stress range calculation for membrane plus bending stresses, where Groups A (IN_OUT1, IN_OUT2) and B (IN_OUT7) denote the separated Insurge/Outsurge transients, are:
PV_Fatigue_ [
] _SUM.out (for NPath1a-6a, NPath1b-6b, WPath1a-2a, WPath1b-2b)
PV_Fatigue_ [
] _SUM.out (for PzPath1a-2a, PzPath1b-2b)
PV_Fat_ [
] _IN_OUT_A_SUM.out (for NPath1a-6a, NPath1b-6b, WPath1a-2a, WPath1b-2b)
PV_Fat_ [
] _IN_OUT_A_SUM.out (for PzPath1a-2a, PzPath1b-2b)
PV_Fat_ [
] _IN_OUT_B_SUM.out (for NPath1a-6a, NPath1b-6b, WPath1a-2a, WPath1b-2b)
PV_Fat_ [
] _IN_OUT_B_SUM.out (for PzPath1a-2a, PzPath1b-2b)
Table 6-18 includes the alternating stress intensities generated. The allowable primary plus secondary stress is
[
] (Table 4-9). Since the maximum primary plus secondary stress intensity range is less than the allowable value, the requirement is met.
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Page 88 Table 6-18: Maximum Primary Plus Secondary Stress Intensity Path Name Inside Node SI Range Outside Node SI Range Allowable psi psi Ksi NPath1a 18305 18369 69.9 NPath2a 18300 9968 NPath3a 18282 9987 NPath4a 10693 10692 NPath5a 22331 22267 NPath6a 18040 17979 WPath1a 9967 9955 WPath2a 9987 9968 NPath1b 22106 21191 NPath2b 22101 10275 NPath3b 22083 10294 NPath4b 10694 10691 NPath5b 22328 22262 NPath6b 20352 20428 WPath1b 10340 10513 WPath2b 10294 10275 PzPath1a 28887 28886 80.1 PzPath2a 24979 23771 PzPath1b 28884 28885 PzPath2b 24978 23772 6.3.5.2.2 Fatigue Usage Criteria (NB-3222.4)
Analysis of stresses during transient conditions is required to satisfy the requirements for repetitive loading. The following discussion describes the fatigue analysis process employed herein for the design.
As described in Section 6.3.4, the runs for each transient time point are contained in the ANSYS solution outputs with file names ending with ST. See Appendix B.1 for a complete list of output files for runs with pressure and temperature. Overall stress levels are reviewed and assessed to determine which model locations require detailed stress/fatigue analysis. Areas of interest include stress concentrations, nozzle replacement, new J-Groove weld, and PZR shell. The objectives are to assure the most severely stressed locations are evaluated and the specified region is quantitatively qualified. Once specific locations for detailed stress evaluation are established, ANSYS paths are defined. Post-processing runs for these paths are made to convert component stresses along these paths into Stress Intensity (SI) categories that correlate to criteria of the ASME Code (i.e., membrane, membrane plus bending, total).
For consideration of fatigue usage, peak stress intensity ranges are calculated. These values must include the total localized stresses. Geometry of the temperature nozzle and new J-Groove weld results in a crevice-like For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 89 configuration between the nozzle OD and the penetration counterbore diameter. Therefore, stress concentrations at these locations must be incorporated into the finite element stresses. To account for these stress concentration locations, a fatigue strength reduction factor (FSRF) is applied to the membrane plus bending (M+B) stress intensity ranges for locations experiencing discontinuity.
In other words, areas of singularities (i.e., crevice/notch locations) may include fictitious stresses. To remove these stresses, the ASME code implements a linearized stress profile. An example of the stress profile can be found in Figure NB-3653.2(b)-1 and denoted in paragraphs NB 3653.2(b)(1) through NB-3653.2(b)(3), Reference [4]. Since the linearized stress profile excludes peak stresses, an FSRF must be included to compensate for the reduction in stress.
In the following cumulative fatigue usage factor (CFUF) calculations, the linearized membrane plus bending stress intensity range at crevice/notch locations are multiplied by an FSRF of four (Reference [4], NB 3352.4 (d)(5)) to represent the peak stress intensity range. An FSRF of [
] applied to all nodes along the outside surface of the nozzle, weld, and PZR (Reference [4], NB-3352.2). Note that some path lines are applied with an FSRF of [
] where there is no crevice-like geometry. Fatigue results in these path lines are well below one and are therefore acceptable for this analysis. The remaining nodes along the inside of the nozzle and PZR that are far from any discontinuities have an FSRF of one. In these cases, the CFUFs are taken from the total stress and not the linearized membrane plus bending stress. The CFUF are documented in the following ANSYS output files (Appendix B.1) where Groups A (IN_OUT1, IN_OUT2) and B (IN_OUT7) denote the separated Insurge/Outsurge transients.
PV_Fatigue_ [
] _SUM.out (for NPath1a-6a, NPath1b-6b, WPath1a-2a, WPath1b-2b)
PV_Fatigue_ [
] _TOTAL.out (for NPath1a-6a, NPath1b-6b)
PV_Fatigue_ [
] _SUM.out (for PzPath1a-2a, PzPath1b-2b)
PV_Fatigue_ [
] _TOTAL.out (for PzPath1a-2a, PzPath1b-2b)
PV_Fat_ [
] _IN_OUT_A_SUM.out (for NPath1a-6a, NPath1b-6b, WPath1a-2a, WPath1b-2b)
PV_Fat_ [
] _IN_OUT_A_TOTAL.out (for NPath1a-6a, NPath1b-6b)
PV_Fat_ [
] _IN_OUT_A_SUM.out (for PzPath1a-2a, PzPath1b-2b)
PV_Fat_ [
] _IN_OUT_A_TOTAL.out (for PzPath1a-2a, PzPath1b-2b)
PV_Fat_ [
] _IN_OUT_B_SUM.out (for NPath1a-6a, NPath1b-6b, WPath1a-2a, WPath1b-2b)
PV_Fat_ [
] _IN_OUT_B_TOTAL.out (for NPath1a-6a, NPath1b-6b)
PV_Fat_ [
] _IN_OUT_B_SUM.out (for PzPath1a-2a, PzPath1b-2b)
PV_Fat_ [
] _IN_OUT_B_TOTAL.out (for PzPath1a-2a, PzPath1b-2b)
For Information Only
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Page 90 Table 6-19 contains the summary of the CFUFs for all path nodes. Table 6-20 and Table 6-21 list the transient pairings used for calculating the bounding cumulative fatigue usage factors. Table 6-22 lists the maximum CFUF with the stress intensity.
Table 6-19: Summary of Cumulative Fatigue Usage Factors For Information Only
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Page 91 Table 6-20: [
]
For Information Only
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Page 92 Table 6-21: [
]
Table 6-22: [
]
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 93 6.3.5.3 Corrosion Evaluation The design configuration of the temperature nozzle repair results in an area of the PZR base material being exposed to continuous contact with reactor coolant water. Chemistry of the reactor coolant combined with properties of the PZR wall material result in corrosion of the wetted surface.
The corrosion rate is determined to be [
] inches per year (Reference [26]). At this rate, total surface corrosion volume loss does not have a significant impact on the analysis unless noted in the calculation.
Conservatively, loss of material is assumed to be even through the PZR bore base material, which increases the bore diameter. Increase in diameter has a negligible effect on stress levels and stress distributions in the wall. Thus, the larger bore diameter does not impact stress and fatigue usage for the assembly and is acceptable.
In conclusion, corrosion of the exposed base material has negligible impact on the response of the PZR temperature nozzle repair and is therefore acceptable for the life of repair.
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 94 7.0 RESULTS 7.1 Primary Stress Qualification Results The calculations associated with justification of primary stress qualification, demonstrate compliance with the requirements of applicable ASME Code criteria (Reference [4]) for the designed pressurizer temperature nozzle repair. Primary stress qualification is valid for the life of the repair. See the result summary table below in Table 7-1.
Subsequent analysis demonstrates acceptability of the replaced nozzle for the life of repair.
Table 7-1: Primary Stress Qualification Summary of Results Component/
Item Appurtenance Qualification Method Calculated Value Allowable Limit PZR Vessel Cylindrical Shell, Nozzle Penetration Section 6.1.1.2.5 Code Guidance 3.18 in, or required value Nozzle Main body Section 6.1.1.2.3 Tentative thickness 0.0486 (2)
Counterbore Section 6.1.1.2.4 Stress Intensity Comparison 23300 psi Diametrical Clearance Section 6.1.1.2.1 Installation Procedure 0.000 in to 0.020 in
$[LDOJDS6HFWLRQ
6.1.1.2.1 Installation Procedure 1/16 in to 0.2875 in R2 Radius Section 6.1.1.2.1 Dimensional Comparison 1/16 in min Nozzle Connecting Weld Throat size Section 6.1.1.2.1 Dimensional Comparison 0.2013 in Weld depth Section 6.1.1.2.1 Dimensional Comparison 0.216 in Weld leg Section 6.1.1.2.1 Dimensional Comparison 0.216 in Weld Length Section 6.1.1.2.1 Dimensional Comparison 0.431 in Shear Stress Section 6.1.1.2.2 Stress Comparison 13980 psi Note(s):
(1)
This is the actual/measured size.
(2)
This is the required size.
The pressure boundary at the thermowell to nozzle weld was evaluated in Section 6.2 and was found to be acceptable. A summary of results table for the thermowell weld can be found within Section 7.2.
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Page 95 7.2 Thermowell to Instrument Nozzle Weld Design Analysis Results The calculated stresses and applicable ratios to allowable from the design analysis for the thermowell to instrument nozzle weld, completed in Section 6.2, are presented in Table 7-2, below.
Table 7-2: Summary of Thermowell to Instrument Nozzle Weld Design Analysis Section/Calculation Result Allowable Section 6.2.1 / Weld Sizing 0.375 in(2)
Section 6.2.2.1 / Primary Stress - Design Conditions 24.4 ksi Section 6.2.2.2 / Primary + Secondary Stress Intensity Range 48.9 ksi Section 6.2.2.3 / Peak Stress Intensity Range N/A Section 6.2.2.4 / Alternating Stress Intensity N/A Section 6.2.2.5 / Cumulative Usage Factor 1.0 Section 6.2.2.6 / Primary Stress - Level D Service Limits 36.4 ksi Note(s):
(1)
This is the required size.
(2)
This is the actual/measured size.
7.3 ASME Code Section III Fatigue Life of Repair Results Primary stresses are qualified in Section 6.1. Table 7-3 contains the summary of results from the model described in Section 6.3 of this document based on [
] design cycles. Note that the PZR base material is bounding for fatigue. Life of repair of the replacement nozzle is [
] from the beginning of operation after the repair has been implemented. Life of the replacement nozzle and adjacent parts is acceptable for the projected life of
[
]
Table 7-3: Summary of ASME Section III Qualification Results For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 96
8.0 REFERENCES
- 1.
Framatome Document 32-1212318-02, APS Pressurizer Instrument Nozzle Sizing Calcs.
- 2.
Framatome Document 32-9370429-000, Palo Verde Unit 1 Pressurizer Temperature Nozzle Replacement Section III One-Cycle Justification.
- 3.
Framatome Document 32-9370512-000, Palo Verde Unit 1 PRZR Thermowell to Instrument Nozzle Weld Design Analysis.
- 4.
ASME Boiler and Pressure Vessel Code,Section III, Rules for Construction of Nuclear Facility Components, Appendices and Division 1 - Subsection NB, Class 1 Components, 2013 Edition.
- 5.
Framatome Drawing 02-8152712-C-002, Palo Verde Unit 1 Pressurizer Temperature Nozzle.
- 6.
Framatome Drawing 02-8152574-E-001, Palo Verde Unit 1 Pressurizer Lower Shell Temperature Nozzle Repair.
- 7.
Framatome Document 51-9370417-000, Corrosion Evaluation for Palo Verde Unit 1 Pressurizer Temperature Nozzle Repair - One Cycle Justification.
- 8.
Framatome Document 38-9370474-001, PV1 Design Inputs for PZR Instrument Nozzle Repair 2023.
- 9.
Framatome Drawing 02-8156912-D-000, Palo Verde Units 1, 2, &3 Pressurizer Lower Shell Temperature Nozzle Repair.
- 10.
Framatome Drawing 02-1214151-E-02, Palo Verde Nuclear Generating Station Pressurizer Nozzle Replacement.
- 11.
Framatome Document 08-9370351-002, Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Modification.
- 12.
ASME Boiler and Pressure Vessel Code,Section III, Rules for Construction of Nuclear Facility Components, Division 1, 1974 Edition with Addenda through Winter 1975.
- 13.
ASME Boiler and Pressure Vessel Code,Section III, Rules for Construction of Nuclear Facility Components, Division 1, 1971 Edition with Addenda through Winter 1973.
- 14.
Palo Verde Specification MN725-A00945, Rev. 8, Design Specification Palo Verde Generating Station Units 1, 2, and 3 Pressurizer Assembly for Arizona Public Service (Contained in Framatome Document 38-9370474-001).
- 15.
ASME Boiler and Pressure Vessel Code,Section II, Materials, Part D, Properties (Customary), 2013 Edition.
- 16.
ASME Boiler and Pressure Vessel Code,Section II, Materials, Part C, Specifications for Welding Rods, Electrodes, and Filler Metals, 2013 Edition.
- 17.
APS Specification N001-0604-00107, Thermowell Specification (Contained in Framatome Document 38-9370474-001).
- 18.
Framatome Document 38-9377971-000, Design Input Record: PV Life of Repair Transients.
- 19.
Framatome Document 38-9377973-000, Design Input Record: PV Life of Repair Insurge Outsurge Transients.
- 20.
Framatome Document 2A4.31-2A4-ANSYS Mechanical Enterprise-19.2_SRA-000, Software Release Authorization.
- 21.
Framatome Document 50-9370348-000, Palo Verde Unit 1 Pressurizer Temperature Nozzle Replacement.
- 22.
Framatome Document CR2023-2489, Counterbore ID Measurement OOT + 0.002.
- 23.
Framatome Drawing 02-1214131-E-01, Temperature Nozzle Installation.
- 24.
Framatome Document 32-1212270-01, APS Pressurizer Lower Temperature Nozzle Evaluation.
- 25.
Roarks Formulas for Stress and Strain, 7th Edition, Warren C. Young and Richard G. Budynas, McGraw-Hill, 2002.
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page 97
- 26.
Framatome Document 51-9378507-000, Corrosion Evaluation for Palo Verde Units 1, 2, and 3 Pressurizer Temperature Nozzle Repair - Life of Repair.
For Information Only
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Page A-1 APPENDIX A:
ASME SECTION III LIFE OF REPAIR - TRANSIENT TEMPERATURE AND THERMAL PLOTS Temperature and thermal gradient plots for the model, documented in the main body of this calculation, are listed in Figure A-1 through Figure A-28, below.
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Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-2 Figure A-1: HU Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-3 Figure A-2: HU Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-4 Figure A-3: CD Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-5 Figure A-4: CD Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-6 Figure A-5: LOT Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-7 Figure A-6: LOT Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-8 Figure A-7: OTRIP Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-9 Figure A-8: OTRIP Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-10 Figure A-9: L Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-11 Figure A-10: L Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-12 Figure A-11: UL Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-13 Figure A-12: UL Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-14 Figure A-13: ST_UP Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-15 Figure A-14: ST_UP Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-16 Figure A-15: ST_DWN Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-17 Figure A-16: ST_DWN Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-18 Figure A-17: LT_UP Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-19 Figure A-18: LT_UP Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-20 Figure A-19: LT_DWN Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-21 Figure A-20: LT_DWN Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-22 Figure A-21: IN_OUT1 Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-23 Figure A-22: IN_OUT1 Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-24 Figure A-23: IN_OUT2 Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-25 Figure A-24: IN_OUT2 Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-26 Figure A-25: IN_OUT7 Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-27 Figure A-26: IN_OUT7 Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-28 Figure A-27: LSP Temperature Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page A-29 Figure A-28: LSP Thermal Gradient Plot For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page B-1 APPENDIX B:
COMPUTER FILES All computer files listed in this Appendix are located in the Framatome Inc. ColdStor system in folder
\\cold\\GeneralAccess\\32\\32-9000000\\32-9373538-003\\official. Files used in this analysis are located in Appendix B.1. Files used for the downstream fracture mechanics analysis are located in Appendix B.2.
B.1 Computer Files Used in This Analysis Note: Any item below with Checksum equal to 0000 indicates a directory.
Checksum User Size DateTime File Name 32364 -rwxdc bcameron 8409 ------- May 06 2024 19:30:07 HPCV2-ANSYS-Container-Job.txt*
00000 drwxdc bcameron 0 --------- Apr 09 2024 18:44:03 Transients/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:52:45 delta_t/
00000 drwxdc bcameron 0 --------- Jan 22 2025 17:34:41 design_case/
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:53:10 fatigue_run/
00000 drwxdc bcameron 0 --------- May 06 2024 17:25:01 input_scripts/
00000 drwxdc bcameron 0 --------- Jan 13 2025 12:52:39 model_run/
00000 drwxdc bcameron 0 --------- Jan 17 2025 21:39:00 structural_run/
00000 drwxdc bcameron 0 --------- Jan 17 2025 09:07:31 thermal_run/
./Transients:
00000 drwxdc bcameron 0 --------- May 06 2024 17:45:04 transient_input_files/
./Transients/transient_input_files:
16701 -rw-dc bcameron 2231 -------- Apr 09 2024 18:44:03 PV_CD_TR.inp 08154 -rw-dc bcameron 2207 -------- Apr 09 2024 18:44:03 PV_HU_TR.inp 25639 -rw-dc bcameron 3539 -------- May 06 2024 17:45:04 PV_IN_OUT1_TR.inp 43591 -rw-dc bcameron 3542 -------- May 06 2024 17:45:04 PV_IN_OUT2_TR.inp 50706 -rw-dc bcameron 3552 -------- May 06 2024 17:45:04 PV_IN_OUT7_TR.inp 31507 -rw-dc bcameron 2407 -------- Apr 09 2024 18:44:03 PV_LOT_TR.inp 16355 -rw-dc bcameron 5603 -------- Apr 09 2024 18:44:03 PV_LSP_TR.inp 24937 -rw-dc bcameron 2001 -------- Apr 09 2024 18:44:03 PV_LT_DWN_TR.inp 19661 -rw-dc bcameron 2002 -------- Apr 09 2024 18:44:03 PV_LT_UP_TR.inp 56463 -rw-dc bcameron 4202 -------- Apr 09 2024 18:44:03 PV_L_TR.inp 48180 -rw-dc bcameron 3814 -------- Apr 09 2024 18:44:03 PV_OTRIP_TR.inp 34852 -rw-dc bcameron 2001 -------- Apr 09 2024 18:44:03 PV_ST_DWN_TR.inp 35530 -rw-dc bcameron 2006 -------- Apr 09 2024 18:44:03 PV_ST_UP_TR.inp 29785 -rw-dc bcameron 4471 -------- Apr 09 2024 18:44:03 PV_UL_TR.inp
./delta_t:
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:50:30 CD/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:50:19 HU/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:52:21 IN_OUT1/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:52:33 IN_OUT2/
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page B-2 Checksum User Size DateTime File Name 00000 drwxdc bcameron 0 --------- Jan 17 2025 11:52:45 IN_OUT7/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:51:09 L/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:50:42 LOT/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:53:00 LSP/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:52:09 LT_DWN/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:51:57 LT_UP/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:50:56 OTRIP/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:51:46 ST_DWN/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:51:34 ST_UP/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:51:23 UL/
./delta_t/CD:
02588 -rw-dc bcameron 79 --------- Jan 17 2025 11:50:28 PV_CD_DT.err 22843 -rw-dc bcameron 72625 ------ Jan 17 2025 11:50:31 PV_CD_DT.out 22396 -rw-dc bcameron 18 --------- Jan 17 2025 11:50:30 dt_number.txt 03420 -rw-dc bcameron 144 -------- Jan 17 2025 11:50:30 dt_timepoints.txt 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:50:29 node_list.txt
./delta_t/HU:
51738 -rw-dc bcameron 79 --------- Jan 17 2025 11:50:16 PV_HU_DT.err 54528 -rw-dc bcameron 72325 ------ Jan 17 2025 11:50:19 PV_HU_DT.out 38778 -rw-dc bcameron 18 --------- Jan 17 2025 11:50:19 dt_number.txt 27638 -rw-dc bcameron 84 --------- Jan 17 2025 11:50:19 dt_timepoints.txt 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:50:17 node_list.txt
./delta_t/IN_OUT1:
59931 -rw-dc bcameron 79 --------- Jan 17 2025 11:52:18 PV_IN_OUT1_DT.err 05912 -rw-dc bcameron 97065 ------- Jan 17 2025 11:52:21 PV_IN_OUT1_DT.out 55163 -rw-dc bcameron 18 --------- Jan 17 2025 11:52:21 dt_number.txt 56579 -rw-dc bcameron 360 -------- Jan 17 2025 11:52:21 dt_timepoints.txt 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:52:19 node_list.txt
./delta_t/IN_OUT2:
27160 -rw-dc bcameron 79 --------- Jan 17 2025 11:52:30 PV_IN_OUT2_DT.err 19378 -rw-dc bcameron 96569 ------- Jan 17 2025 11:52:33 PV_IN_OUT2_DT.out 55166 -rw-dc bcameron 18 --------- Jan 17 2025 11:52:33 dt_number.txt 33736 -rw-dc bcameron 432 -------- Jan 17 2025 11:52:33 dt_timepoints.txt 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:52:31 node_list.txt
./delta_t/IN_OUT7:
43545 -rw-dc bcameron 79 --------- Jan 17 2025 11:52:42 PV_IN_OUT7_DT.err 56624 -rw-dc bcameron 95989 ------- Jan 17 2025 11:52:45 PV_IN_OUT7_DT.out 22398 -rw-dc bcameron 18 --------- Jan 17 2025 11:52:45 dt_number.txt 20160 -rw-dc bcameron 420 -------- Jan 17 2025 11:52:45 dt_timepoints.txt For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page B-3 Checksum User Size DateTime File Name 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:52:43 node_list.txt
./delta_t/L:
06682 -rw-dc bcameron 79 --------- Jan 17 2025 11:51:05 PV_L_DT.err 36750 -rw-dc bcameron 132509 ------ Jan 17 2025 11:51:09 PV_L_DT.out 22397 -rw-dc bcameron 18 --------- Jan 17 2025 11:51:09 dt_number.txt 64103 -rw-dc bcameron 396 -------- Jan 17 2025 11:51:09 dt_timepoints.txt 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:51:06 node_list.txt
./delta_t/LOT:
35352 -rw-dc bcameron 79 --------- Jan 17 2025 11:50:40 PV_LOT_DT.err 60275 -rw-dc bcameron 71237 ------- Jan 17 2025 11:50:42 PV_LOT_DT.out 22397 -rw-dc bcameron 18 --------- Jan 17 2025 11:50:42 dt_number.txt 21085 -rw-dc bcameron 168 -------- Jan 17 2025 11:50:42 dt_timepoints.txt 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:50:41 node_list.txt
./delta_t/LSP:
27163 -rw-dc bcameron 79 --------- Jan 17 2025 11:52:55 PV_LSP_DT.err 61570 -rw-dc bcameron 186933 ------ Jan 17 2025 11:53:00 PV_LSP_DT.out 06013 -rw-dc bcameron 18 --------- Jan 17 2025 11:53:00 dt_number.txt 13017 -rw-dc bcameron 276 -------- Jan 17 2025 11:53:00 dt_timepoints.txt 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:52:56 node_list.txt
./delta_t/LT_DWN:
43546 -rw-dc bcameron 79 --------- Jan 17 2025 11:52:06 PV_LT_DWN_DT.err 39446 -rw-dc bcameron 56989 ------- Jan 17 2025 11:52:09 PV_LT_DWN_DT.out 06011 -rw-dc bcameron 18 --------- Jan 17 2025 11:52:08 dt_number.txt 42512 -rw-dc bcameron 96 --------- Jan 17 2025 11:52:08 dt_timepoints.txt 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:52:08 node_list.txt
./delta_t/LT_UP:
23067 -rw-dc bcameron 79 --------- Jan 17 2025 11:51:55 PV_LT_UP_DT.err 62170 -rw-dc bcameron 56989 ------- Jan 17 2025 11:51:57 PV_LT_UP_DT.out 38777 -rw-dc bcameron 18 --------- Jan 17 2025 11:51:57 dt_number.txt 30716 -rw-dc bcameron 60 --------- Jan 17 2025 11:51:57 dt_timepoints.txt 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:51:56 node_list.txt
./delta_t/OTRIP:
51737 -rw-dc bcameron 79 --------- Jan 17 2025 11:50:52 PV_OTRIP_DT.err 64785 -rw-dc bcameron 121533 ------ Jan 17 2025 11:50:56 PV_OTRIP_DT.out 22398 -rw-dc bcameron 18 --------- Jan 17 2025 11:50:55 dt_number.txt 59469 -rw-dc bcameron 420 -------- Jan 17 2025 11:50:55 dt_timepoints.txt 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:50:53 node_list.txt For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page B-4 Checksum User Size DateTime File Name
./delta_t/ST_DWN:
39450 -rw-dc bcameron 79 --------- Jan 17 2025 11:51:44 PV_ST_DWN_DT.err 59324 -rw-dc bcameron 50809 ------- Jan 17 2025 11:51:46 PV_ST_DWN_DT.out 22395 -rw-dc bcameron 18 --------- Jan 17 2025 11:51:46 dt_number.txt 17268 -rw-dc bcameron 120 -------- Jan 17 2025 11:51:46 dt_timepoints.txt 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:51:45 node_list.txt
./delta_t/ST_UP:
23065 -rw-dc bcameron 79 --------- Jan 17 2025 11:51:32 PV_ST_UP_DT.err 64610 -rw-dc bcameron 50769 ------- Jan 17 2025 11:51:34 PV_ST_UP_DT.out 55163 -rw-dc bcameron 18 --------- Jan 17 2025 11:51:34 dt_number.txt 52119 -rw-dc bcameron 132 -------- Jan 17 2025 11:51:34 dt_timepoints.txt 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:51:33 node_list.txt
./delta_t/UL:
23068 -rw-dc bcameron 79 --------- Jan 17 2025 11:51:19 PV_UL_DT.err 00098 -rw-dc bcameron 139885 ------ Jan 17 2025 11:51:23 PV_UL_DT.out 38783 -rw-dc bcameron 18 --------- Jan 17 2025 11:51:23 dt_number.txt 60119 -rw-dc bcameron 336 -------- Jan 17 2025 11:51:23 dt_timepoints.txt 29676 -rw-dc bcameron 122 -------- Jan 17 2025 11:51:20 node_list.txt
./design_case:
36098 -rw-dc bcameron 1197 -------- Jan 17 2025 11:44:27 PV_Design_Cond_ST.err 37140 -rw-dc bcameron 45018 ------- Jan 17 2025 11:50:07 PV_Design_Cond_ST.out
./fatigue_run:
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:11:52 [
]
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:39:12 [
]_A/
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:50:28 [
]_B/
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:29:37 [ l
]
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:45:52 [
]_A/
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:54:15 [
]_B/
./fatigue_run/ [
]
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:11:52 SUM/
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:24:46 TOTAL/
./fatigue_run/ [
] /SUM:
36977 -rw-dc bcameron 60871 ------- Jan 17 2025 23:11:46 PV_Fatigue_ [
] _SUM.err 27400 -rw-dc bcameron 36735322 ----- Jan 17 2025 23:11:52 PV_Fatigue_ [
] _SUM.out For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page B-5 Checksum User Size DateTime File Name
./fatigue_run/ [
] /TOTAL:
25227 -rw-dc bcameron 60871 ------- Jan 17 2025 23:24:40 PV_Fatigue_ [
] _TOTAL.err 44884 -rw-dc bcameron 36739887 ---- Jan 17 2025 23:24:46 PV_Fatigue_ [
] _TOTAL.out
./fatigue_run/ [
] _A:
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:39:12 SUM/
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:43:59 TOTAL/
./fatigue_run/ [
] _A/SUM:
57255 -rw-dc bcameron 22429 ------- Jan 17 2025 23:39:08 PV_Fat_ [
] _IN_OUT_A_SUM.err 53465 -rw-dc bcameron 13504095 ---- Jan 17 2025 23:39:12 PV_Fat_ [
] _IN_OUT_A_SUM.out
./fatigue_run/ [
] _A/TOTAL:
36495 -rw-dc bcameron 22429 ------- Jan 17 2025 23:43:56 PV_Fat_ [
] _IN_OUT_A_TOTAL.err 06374 -rw-dc bcameron 13506148 ---- Jan 17 2025 23:43:59 PV_Fat_ [
] _IN_OUT_A_TOTAL.out
./fatigue_run/ [
] _B:
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:50:28 SUM/
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:53:10 TOTAL/
./fatigue_run/ [
] _B/SUM:
57417 -rw-dc bcameron 12297 ------- Jan 17 2025 23:50:24 PV_Fat_ [
] _IN_OUT_B_SUM.err 32813 -rw-dc bcameron 7402703 ----- Jan 17 2025 23:50:28 PV_Fat_ [
] _IN_OUT_B_SUM.out
./fatigue_run/ [
] _B/TOTAL:
45176 -rw-dc bcameron 12297 ------- Jan 17 2025 23:53:06 PV_Fat_ [
] _IN_OUT_B_TOTAL.err 22820 -rw-dc bcameron 7404756 ----- Jan 17 2025 23:53:10 PV_Fat_ [
] _IN_OUT_B_TOTAL.out
./fatigue_run/ [
]
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:29:37 SUM/
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:34:26 TOTAL/
./fatigue_run/ [
] /SUM:
27772 -rw-dc bcameron 60871 ------- Jan 17 2025 23:29:35 PV_Fatigue_ [
] _SUM.err 18957 -rw-dc bcameron 9318678 ----- Jan 17 2025 23:29:37 PV_Fatigue_ [
] _SUM.out For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page B-6 Checksum User Size DateTime File Name
./fatigue_run/ [
] /TOTAL:
29599 -rw-dc bcameron 60871 ------- Jan 17 2025 23:34:24 PV_Fatigue_ [
] _TOTAL.err 41187 -rw-dc bcameron 9319838 ------ Jan 17 2025 23:34:26 PV_Fatigue_ [
] _TOTAL.out
./fatigue_run/ [
] _A:
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:45:52 SUM/
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:47:45 TOTAL/
./fatigue_run/ [
] _A/SUM:
64934 -rw-dc bcameron 22429 ------- Jan 17 2025 23:45:50 PV_Fat_ [
] _IN_OUT_A_SUM.err 60212 -rw-dc bcameron 3440833 ----- Jan 17 2025 23:45:52 PV_Fat_ [
] _IN_OUT_A_SUM.out
./fatigue_run/ [
] _A/TOTAL:
55721 -rw-dc bcameron 22429 ------- Jan 17 2025 23:47:43 PV_Fat_ [
] _IN_OUT_A_TOTAL.err 53000 -rw-dc bcameron 3441365 ----- Jan 17 2025 23:47:45 PV_Fat_ [
] _IN_OUT_A_TOTAL.out
./fatigue_run/ [
] _B:
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:54:15 SUM/
00000 drwxdc bcameron 0 --------- Jan 17 2025 23:55:22 TOTAL/
./fatigue_run/ [
] _B/SUM:
23083 -rw-dc bcameron 12297 ------- Jan 17 2025 23:54:14 PV_Fat_ [
] _IN_OUT_B_SUM.err 29901 -rw-dc bcameron 1897796 ----- Jan 17 2025 23:54:15 PV_Fat_ [
] _IN_OUT_B_SUM.out
./fatigue_run/ [
] _B/TOTAL:
45066 -rw-dc bcameron 12297 ------- Jan 17 2025 23:55:21 PV_Fat_ [
] _IN_OUT_B_TOTAL.err 26956 -rw-dc bcameron 1898328 ----- Jan 17 2025 23:55:22 PV_Fat_ [
] _IN_OUT_B_TOTAL.out
./input_scripts:
00000 drwxdc bcameron 0 --------- Dec 17 2024 12:37:53 fatigue_inputs/
51152 -rw-dc bcameron 1252 -------- Apr 09 2024 18:45:27 run_dc.inp 03349 -rw-dc bcameron 342 --------- Apr 09 2024 18:45:27 run_dt.inp 45224 -rw-dc bcameron 4028 -------- May 06 2024 17:22:35 run_hoop_stress.inp 44221 -rw-dc bcameron 2403 -------- Apr 09 2024 18:45:27 run_th.inp 25791 -rw-dc bcameron 2500 -------- May 06 2024 17:25:01 run_th2.inp 00000 drwxdc bcameron 0 --------- May 06 2024 17:56:28 structural_inputs/
12560 -rw-dc bcameron 7840 -------- Apr 09 2024 18:45:27 timepoint_selection.mac For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page B-7 Checksum User Size DateTime File Name
./input_scripts/fatigue_inputs:
57934 -rw-dc bcameron 12832 ------- Dec 17 2024 14:29:33 PV_Fat_ [
] _IN_OUT_A.inp 50555 -rw-dc bcameron 12620 ------- Jan 15 2025 18:24:54 PV_Fat_ [
] _IN_OUT_B.inp 34911 -rw-dc bcameron 12825 ------- Dec 17 2024 14:29:46 PV_Fat_ [
] _IN_OUT_A.inp 40146 -rw-dc bcameron 12611 ------- Jan 15 2025 18:25:58 PV_Fat_ [
] _IN_OUT_B.inp 60289 -rw-dc bcameron 14923 ------- Jan 15 2025 18:29:41 PV_Fatigue_ [
] inp 41450 -rw-dc bcameron 14923 ------- Jan 15 2025 18:30:44 PV_Fatigue_ [
] inp 23031 -rw-dc bcameron 901 --------- Apr 29 2024 18:32:51 Paths.mac
./input_scripts/structural_inputs:
10281 -rw-dc bcameron 3816 -------- Dec 13 2024 16:32:04 PV_CD_ST.inp 46639 -rw-dc bcameron 3602 -------- Dec 13 2024 16:32:28 PV_HU_ST.inp 22631 -rw-dc bcameron 4792 -------- Dec 13 2024 16:33:12 PV_IN_OUT1_ST.inp 46830 -rw-dc bcameron 5104 -------- Dec 13 2024 16:33:55 PV_IN_OUT2_ST.inp 19932 -rw-dc bcameron 5095 -------- Jan 15 2025 18:19:02 PV_IN_OUT7_ST.inp 44669 -rw-dc bcameron 3915 -------- Jan 15 2025 18:08:33 PV_LOT_ST.inp 47013 -rw-dc bcameron 5053 -------- Jan 15 2025 18:20:32 PV_LSP_ST.inp 14976 -rw-dc bcameron 3583 -------- Dec 13 2024 16:36:32 PV_LT_DWN_ST.inp 21387 -rw-dc bcameron 3446 -------- Dec 13 2024 16:37:07 PV_LT_UP_ST.inp 22738 -rw-dc bcameron 5253 -------- Jan 15 2025 18:12:46 PV_L_ST.inp 56219 -rw-dc bcameron 5310 -------- Jan 15 2025 18:10:20 PV_OTRIP_ST.inp 03011 -rw-dc bcameron 3670 -------- Dec 13 2024 16:37:52 PV_ST_DWN_ST.inp 01988 -rw-dc bcameron 3716 -------- Dec 13 2024 16:38:15 PV_ST_UP_ST.inp 16379 -rw-dc bcameron 5135 -------- Jan 15 2025 18:14:13 PV_UL_ST.inp
./model_run:
24174 -rw-dc bcameron 237 --------- Mar 27 2024 16:51:01 HPCV2-ANSYS-Container-Job.txt 11399 -rw-dc bcameron 8930 -------- Jan 13 2025 12:51:14 Model.inp 59845 -rw-dc bcameron 23801612 ----- Mar 27 2024 10:09:19 PV_Model_WB.dat
./structural_run:
00000 drwxdc bcameron 0 --------- Jan 17 2025 13:04:35 CD/
00000 drwxdc bcameron 0 --------- Jan 17 2025 12:22:10 HU/
00000 drwxdc bcameron 0 --------- Jan 17 2025 19:33:27 IN_OUT1/
00000 drwxdc bcameron 0 --------- Jan 17 2025 20:34:32 IN_OUT2/
00000 drwxdc bcameron 0 --------- Jan 17 2025 21:39:00 IN_OUT7/
00000 drwxdc bcameron 0 --------- Jan 17 2025 15:57:12 L/
00000 drwxdc bcameron 0 --------- Jan 17 2025 13:33:45 LOT/
00000 drwxdc bcameron 0 --------- Jan 17 2025 22:58:51 LSP/
00000 drwxdc bcameron 0 --------- Jan 17 2025 18:39:15 LT_DWN/
00000 drwxdc bcameron 0 --------- Jan 17 2025 18:14:17 LT_UP/
For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page B-8 Checksum User Size DateTime File Name 00000 drwxdc bcameron 0 --------- Jan 17 2025 14:46:37 OTRIP/
00000 drwxdc bcameron 0 --------- Jan 17 2025 17:57:41 ST_DWN/
00000 drwxdc bcameron 0 --------- Jan 17 2025 17:33:04 ST_UP/
00000 drwxdc bcameron 0 --------- Jan 17 2025 17:06:48 UL/
./structural_run/CD:
31545 -rw-dc bcameron 5369 -------- Jan 17 2025 12:59:40 PV_CD_ST.err 52046 -rw-dc bcameron 88217 ------- Jan 17 2025 13:04:35 PV_CD_ST.out
./structural_run/HU:
47471 -rw-dc bcameron 3879 -------- Jan 17 2025 12:20:38 PV_HU_ST.err 04220 -rw-dc bcameron 76062 ------- Jan 17 2025 12:22:10 PV_HU_ST.out
./structural_run/IN_OUT1:
41687 -rw-dc bcameron 11031 ------- Jan 17 2025 19:30:58 PV_IN_OUT1_ST.err 48234 -rw-dc bcameron 132652 ------ Jan 17 2025 19:33:27 PV_IN_OUT1_ST.out
./structural_run/IN_OUT2:
05423 -rw-dc bcameron 13117 ------- Jan 17 2025 20:32:08 PV_IN_OUT2_ST.err 54815 -rw-dc bcameron 147786 ------ Jan 17 2025 20:34:32 PV_IN_OUT2_ST.out
./structural_run/IN_OUT7:
46246 -rw-dc bcameron 13117 ------- Jan 17 2025 21:37:38 PV_IN_OUT7_ST.err 53229 -rw-dc bcameron 146943 ------ Jan 17 2025 21:39:00 PV_IN_OUT7_ST.out
./structural_run/L:
18950 -rw-dc bcameron 13117 ------- Jan 17 2025 15:55:33 PV_L_ST.err 14967 -rw-dc bcameron 148689 ------ Jan 17 2025 15:57:12 PV_L_ST.out
./structural_run/LOT:
25042 -rw-dc bcameron 5667 ------- Jan 17 2025 13:32:08 PV_LOT_ST.err 15685 -rw-dc bcameron 88377 ------ Jan 17 2025 13:33:45 PV_LOT_ST.out
./structural_run/LSP:
27801 -rw-dc bcameron 12521 ------- Jan 17 2025 22:57:09 PV_LSP_ST.err 03280 -rw-dc bcameron 149198 ------ Jan 17 2025 22:58:51 PV_LSP_ST.out
./structural_run/LT_DWN:
56223 -rw-dc bcameron 3879 ------- Jan 17 2025 18:37:47 PV_LT_DWN_ST.err 18290 -rw-dc bcameron 74846 ------ Jan 17 2025 18:39:15 PV_LT_DWN_ST.out
./structural_run/LT_UP:
01073 -rw-dc bcameron 2985 ------- Jan 17 2025 18:12:43 PV_LT_UP_ST.err 12339 -rw-dc bcameron 67529 ------ Jan 17 2025 18:14:17 PV_LT_UP_ST.out For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page B-9 Checksum User Size DateTime File Name
./structural_run/OTRIP:
45048 -rw-dc bcameron 13415 ------- Jan 17 2025 14:44:54 PV_OTRIP_ST.err 41412 -rw-dc bcameron 150109 ------ Jan 17 2025 14:46:37 PV_OTRIP_ST.out
./structural_run/ST_DWN:
39341 -rw-dc bcameron 4475 ------- Jan 17 2025 17:54:30 PV_ST_DWN_ST.err 11726 -rw-dc bcameron 78781 ------ Jan 17 2025 17:57:41 PV_ST_DWN_ST.out
./structural_run/ST_UP:
50968 -rw-dc bcameron 4773 ------- Jan 17 2025 17:29:50 PV_ST_UP_ST.err 60780 -rw-dc bcameron 81012 ------ Jan 17 2025 17:33:04 PV_ST_UP_ST.out
./structural_run/UL:
53737 -rw-dc bcameron 12223 ------- Jan 17 2025 17:05:08 PV_UL_ST.err 33097 -rw-dc bcameron 142427 ------ Jan 17 2025 17:06:48 PV_UL_ST.out
./thermal_run:
00000 drwxdc bcameron 0 --------- Jan 15 2025 22:36:48 CD/
00000 drwxdc bcameron 0 --------- Jan 15 2025 20:29:26 HU/
00000 drwxdc bcameron 0 --------- Jan 17 2025 05:47:31 IN_OUT1/
00000 drwxdc bcameron 0 --------- Jan 17 2025 09:07:31 IN_OUT2/
00000 drwxdc bcameron 0 --------- Jan 17 2025 11:44:14 IN_OUT7/
00000 drwxdc bcameron 0 --------- Jan 16 2025 09:11:16 L/
00000 drwxdc bcameron 0 --------- Jan 16 2025 00:45:36 LOT/
00000 drwxdc bcameron 0 --------- Jan 17 2025 01:39:01 LSP/
00000 drwxdc bcameron 0 --------- Jan 16 2025 18:54:33 LT_DWN/
00000 drwxdc bcameron 0 --------- Jan 16 2025 17:23:34 LT_UP/
00000 drwxdc bcameron 0 --------- Jan 16 2025 04:40:50 OTRIP/
00000 drwxdc bcameron 0 --------- Jan 16 2025 15:53:26 ST_DWN/
00000 drwxdc bcameron 0 --------- Jan 16 2025 14:59:39 ST_UP/
00000 drwxdc bcameron 0 --------- Jan 16 2025 14:05:47 UL/
./thermal_run/CD:
25542 -rw-dc bcameron 4779 -------- Jan 15 2025 22:00:25 PV_CD_TH.err 37329 -rw-dc bcameron 142749 ------ Jan 15 2025 22:36:48 PV_CD_TH.out
./thermal_run/HU:
08453 -rw-dc bcameron 4779 -------- Jan 15 2025 20:06:19 PV_HU_TH.err 28316 -rw-dc bcameron 142564 ------ Jan 15 2025 20:29:26 PV_HU_TH.out
./thermal_run/IN_OUT1:
06357 -rw-dc bcameron 7389 -------- Jan 17 2025 05:02:04 PV_IN_OUT1_TH.err 56377 -rw-dc bcameron 206932 ------ Jan 17 2025 05:47:31 PV_IN_OUT1_TH.out For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page B-10 Checksum User Size DateTime File Name
./thermal_run/IN_OUT2:
32018 -rw-dc bcameron 7389 -------- Jan 17 2025 08:41:33 PV_IN_OUT2_TH.err 18258 -rw-dc bcameron 200500 ------ Jan 17 2025 09:07:31 PV_IN_OUT2_TH.out
./thermal_run/IN_OUT7:
25088 -rw-dc bcameron 7389 -------- Jan 17 2025 11:22:02 PV_IN_OUT7_TH.err 35160 -rw-dc bcameron 198298 ------ Jan 17 2025 11:44:14 PV_IN_OUT7_TH.out
./thermal_run/L:
05558 -rw-dc bcameron 9999 -------- Jan 16 2025 08:45:30 PV_L_TH.err 34336 -rw-dc bcameron 277215 ------ Jan 16 2025 09:11:16 PV_L_TH.out
./thermal_run/LOT:
37776 -rw-dc bcameron 5301 -------- Jan 16 2025 00:14:15 PV_LOT_TH.err 60866 -rw-dc bcameron 143461 ------ Jan 16 2025 00:45:36 PV_LOT_TH.out
./thermal_run/LSP:
26315 -rw-dc bcameron 13653 ------- Jan 17 2025 01:12:36 PV_LSP_TH.err 27830 -rw-dc bcameron 395563 ------ Jan 17 2025 01:39:01 PV_LSP_TH.out
./thermal_run/LT_DWN:
36927 -rw-dc bcameron 4257 -------- Jan 16 2025 18:25:25 PV_LT_DWN_TH.err 31342 -rw-dc bcameron 111786 ------ Jan 16 2025 18:54:33 PV_LT_DWN_TH.out
./thermal_run/LT_UP:
54765 -rw-dc bcameron 4257 -------- Jan 16 2025 16:55:32 PV_LT_UP_TH.err 62895 -rw-dc bcameron 111914 ------ Jan 16 2025 17:23:34 PV_LT_UP_TH.out
./thermal_run/OTRIP:
56235 -rw-dc bcameron 8955 -------- Jan 16 2025 04:14:10 PV_OTRIP_TH.err 62666 -rw-dc bcameron 251488 ------ Jan 16 2025 04:40:50 PV_OTRIP_TH.out
./thermal_run/ST_DWN:
09803 -rw-dc bcameron 4257 -------- Jan 16 2025 15:26:46 PV_ST_DWN_TH.err 31143 -rw-dc bcameron 100303 ------ Jan 16 2025 15:53:26 PV_ST_DWN_TH.out
./thermal_run/ST_UP:
46177 -rw-dc bcameron 4257 -------- Jan 16 2025 14:32:41 PV_ST_UP_TH.err 16177 -rw-dc bcameron 100289 ------ Jan 16 2025 14:59:39 PV_ST_UP_TH.out
./thermal_run/UL:
18870 -rw-dc bcameron 10521 ------- Jan 16 2025 13:40:15 PV_UL_TH.err 43017 -rw-dc bcameron 292599 ------ Jan 16 2025 14:05:47 PV_UL_TH.out For Information Only
Document No. 32-9379352-002 PROPRIETARY Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair (NP)
Page B-11 B.2 Computer Files for Downstream Fracture Mechanics Nodal hoop stresses and location coordinates are extracted for all nodes on the global X-Y plane (i.e., Z equals zero). In the global coordinate system, hoop stresses are in the Z direction (Sz). Computer output files listed in this Section are located in the Framatome Inc. ColdStor system in folder \\cold\\General-Access\\32\\32-9000000\\32-9373538-003\\official. Transient abbreviations are given in Table 4-13.
Note: Any item below with Checksum equal to 0000 indicates a directory.
Checksum User Size DateTime File Name 00000 drwxdc bcameron 0 --------- Jan 18 2025 00:00:08 hoop_run/
./hoop_run:
14357 -rw-dc bcameron 755245 ------ Jan 17 2025 23:55:52 PV_CD.sav 15915 -rw-dc bcameron 57073 ------- Jan 18 2025 00:00:07 PV_Design_Cond.sav 09993 -rw-dc bcameron 506556 ------ Jan 17 2025 23:55:40 PV_HU.sav 31302 -rw-dc bcameron 107971 ------ Jan 18 2025 00:00:07 PV_Hoop_Stress.err 03611 -rw-dc bcameron 132296 ------ Jan 18 2025 00:00:08 PV_Hoop_Stress.out 63658 -rw-dc bcameron 1701792 ----- Jan 17 2025 23:58:33 PV_IN_OUT1.sav 24652 -rw-dc bcameron 2050073 ----- Jan 17 2025 23:59:04 PV_IN_OUT2.sav 26026 -rw-dc bcameron 2050073 ----- Jan 17 2025 23:59:37 PV_IN_OUT7.sav 22472 -rw-dc bcameron 2050761 ----- Jan 17 2025 23:57:07 PV_L.sav 08467 -rw-dc bcameron 805260 ------ Jan 17 2025 23:56:04 PV_LOT.sav 00395 -rw-dc bcameron 1952526 ----- Jan 18 2025 00:00:06 PV_LSP.sav 19664 -rw-dc bcameron 506373 ------ Jan 17 2025 23:58:08 PV_LT_DWN.sav 62266 -rw-dc bcameron 357109 ------ Jan 17 2025 23:58:00 PV_LT_UP.sav 32027 -rw-dc bcameron 2100150 ----- Jan 17 2025 23:56:35 PV_OTRIP.sav 07640 -rw-dc bcameron 605878 ------ Jan 17 2025 23:57:55 PV_ST_DWN.sav 21218 -rw-dc bcameron 655637 ------ Jan 17 2025 23:57:45 PV_ST_UP.sav 54486 -rw-dc bcameron 1901679 ----- Jan 17 2025 23:57:36 PV_UL.sav 17328 -rw-dc bcameron 100822 ------ Jan 17 2025 23:55:32 UCTrxyz.sav For Information Only
Supplement to Relief Request 73-Proposed Alternative for Pressurizer Lower Shell Temperature Nozzle Life of Repair Supplement to Relief Request 73 Palo Verde Nuclear Generating Station - Unit 1 Affidavit for Proprietary Report 32-9373538-003 Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair
A F F I D A V I T 1.
My name is Philip A. Opsal. I am Manager, Product Licensing for Framatome Inc. (formally known as AREVA Inc.), and as such I am authorized to execute this Affidavit.
2.
I am familiar with the criteria applied by Framatome to determine whether certain Framatome information is proprietary. I am familiar with the policies established by Framatome to ensure the proper application of these criteria.
3.
I am familiar with the Framatome information contained in Framatome Document No.32-9373538-003, Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair referred to herein as this Document. Information contained in this Document has been classified by Framatome as proprietary in accordance with the policies established by Framatome for the control and protection of proprietary and confidential information.
4.
This Document contains information of a proprietary and confidential nature and is of the type customarily held in confidence by Framatome and not made available to the public. Based on my experience, I am aware that other companies regard information of the kind contained in this Document as proprietary and confidential.
5.
This Document has been made available to the U.S. Nuclear Regulatory Commission in confidence with the request that the information contained in this Document be withheld from public disclosure. The request for withholding of proprietary information is made in accordance with 10 CFR 2.390. The information for which withholding from disclosure is requested qualifies under 10 CFR 2.390(a)(4) Trade secrets and commercial or financial information.
6.
The following criteria are customarily applied by Framatome to determine whether information should be classified as proprietary:
(a)
The information reveals details of Framatomes research and development plans and programs or their results.
(b)
Use of the information by a competitor would permit the competitor to significantly reduce its expenditures, in time or resources, to design, produce, or market a similar product or service.
(c)
The information includes test data or analytical techniques concerning a process, methodology, or component, the application of which results in a competitive advantage for Framatome.
(d)
The information reveals certain distinguishing aspects of a process, methodology, or component, the exclusive use of which provides a competitive advantage for Framatome in product optimization or marketability.
(e)
The information is vital to a competitive advantage held by Framatome, would be helpful to competitors to Framatome, and would likely cause substantial harm to the competitive position of Framatome.
The information in this Document is considered proprietary for the reasons set forth in paragraphs 6(b), 6 (c), 6(d), and 6(e) above.
7.
In accordance with Framatomes policies governing the protection and control of information, proprietary information contained in this Document has been made available, on a limited basis, to others outside Framatome only as required and under suitable agreement providing for nondisclosure and limited use of the information.
8.
Framatome policy requires that proprietary information be kept in a secured file or area and distributed on a need-to-know basis.
9.
The foregoing statements are true and correct to the best of my knowledge, information, and belief.
I declare under penalty of perjury that the foregoing is true and correct.
Executed on February 13, 2025.
Philip A. Opsal Manager, Product Licensing, Framatome Inc.
Philip A Opsal
Supplement to Relief Request 73-Proposed Alternative for Pressurizer Lower Shell Temperature Nozzle Life of Repair Supplement to Relief Request 73 Palo Verde Nuclear Generating Station - Unit 1 Proprietary Report 32-9373538-003 Palo Verde Units 1, 2, & 3 Pressurizer Temperature Nozzle Replacement ASME Section III Life of Repair