Text

Relief Request SWOL-REP-1-U2: Submittal of Revised Areva Calculations. Part 7 of 15
	ML14259A322
Person / Time
Site:	Diablo Canyon
Issue date:	09/15/2014
From:	; AREVA
To:	; Office of Nuclear Reactor Regulation
Shared Package
ML14259A323	List: DCL-14-084, Relief Request SWOL-REP-1-U2: Submittal of Revised Areva Calculations. Part 7 of 15; ML14259A226; ML14259A298; ML14259A302; ML14259A307; ML14259A312; ML14259A314;
References
	DCL-14-084 32-9219781-002, 32-9219792-002
	Download: ML14259A322 (57)
	v • d • e

Controlled Document A

AREVA Document No. 32-9219781-002 Diablo Canyon Unit 2- Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary Large Step Load Transient LSL tr.inp 5/17/2007 Input file contains definition of large step load transient min LSL th.out 5/29/2007 Output file for thermal analysis min LSL dtout 5/29/2007 Output file contains thermal gradients min LSL stout 5/29/2007 Output file for the stress analysis min_LSL_rtch.out 5/29/2007 Output file for the thermal ratcheting calculation Boron Concentration Equalization Input file contains definition of boron concentration BCE_tr.inp 5/17/2007 equalization transient min BCE th.out 5/29/2007 Output file for thermal analysis min BCE dtout 5/29/2007 Output file contains thermal gradients min_BCE stout 5/29/2007 Output file for the stress analysis min BCE rtch.out 5/29/2007 Output file for the thermal ratcheting calculation Loss of Load LOL tr.inp 5/17/2007 Input file contains definition of loss of load transient min LOL th.out 5/29/2007 Output file for thermal analysis min LOL dt.out 5/29/2007 Output file contains thermal gradients min_LOL_st.out 5/29/2007 Output file for the stress analysis min_LOL_rtch.out 5/29/2007 Output file for the thermal ratcheting calculation Loss of Power LOP tr.inp 5/17/2007 Input file contains definition of loss of power transient min LOP th.out 5/29/2007 Output file for thermal analysis min LOP dtout 5/29/2007 Output file contains thermal gradients min LOP stout 5/29/2007 Output file for the stress analysis min LOP rtch.out 5/29/2007 Output file for the thermal ratcheting calculation Loss of Flow LOF tr.inp 5/17/2007 Input file contains definition of loss of flow transient min LOF th.out 5/29/2007 Output file for thermal analysis min LOF dt.out 5/29/2007 Output file contains thermal gradients min LOF stout 5/29/2007 Output file for the stress analysis min LOF rtch .out 5/29/2007 Output file for the thermal ratcheting calculation Reactor Trip RT tr.inp 5/17/2007 Input file contains definition of reactor trip transient min RT th.out 5/29/2007 Output file for thermal analysis min RT dt.out 5/29/2007 Output file contains thermal gradients min RT stout 5/29/2007 Output file for the stress analysis min_RT_rtch.out 5/29/2007 Output file for the thermal ratcheting calculation Turbine Roll Test TRT tr.inp 5/17/2007 Input file contains definition of turbine roll test transient min_TRT_th .out 5/29/2007 Output file for thermal analysis Page 95

Controlled Document A

AREVA Document No. 32-9219781-002 Diablo Canyon Unit 2- Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary min_TRT_ dt.out 5/29/2007 Output file contains thermal gradients min TRT stout 5/29/2007 Output file for the stress analysis min TRT rtch.out 5/29/2007 Output file for the thermal ratcheting calculation Inadvertent Auxiliary Spray Actuation Input file contains definition of inadvertent auxiliary spray IA_tr.inp . 5/17/2007 actuation transient min lA th.out 5/29/2007 Output file for thermal analysis min lA dt.out 5/29/2007 Output file contains thermal gradients min lA stout 5/29/2007 Output file for the stress analysis min lA rtch.out 5/29/2007 Output file for the thermal ratcheting calculation Appendix A: Fracture Mechanics Results File Name Date Description Input file contains path definition for stress min_path_fr.mac 5/31/2007 component along the paths for all transients Output file contains the path point distances from Fr_PathLocs.out 5/31/2007 the inside node HU-ES fr SY HU-ES fr SZ HU-LS fr SY HU-LS fr SZ CD-ES320 fr SY CD-ES320 fr SZ CD-LS ~20 fr SY CD-LS ~20 fr SZ CD-ES 105 fr SY CD-ES405 fr SZ CD-LS 105 fr SY CD-LS 105 fr SZ PLPU fr SY PLPU fr SZ LSL_fr_SY LSL_fr_SZ SLI_fr SY SLI_fr_SZ 5/31/2007 Stress results for fracture mechanics SLD_fr_SY SLD_fr_SZ BCE_fr_SY BCE_fr_SZ LOL_fr_SY LOL_fr_SZ LOP fr SY LOP_fr_SZ LOF fr SY LOF fr SZ RT fr SY RT fr SZ lA fr SY lA fr SZ TRT fr SY TRT fr SZ ,

HU-ES fr TH SLD fr TH HU-LS fr TH BCE fr TH CD-ES320 fr TH LOL_fr TH CD-LS320_fr TH LOP fr TH Output file contains temperature results for CD-ES40E fr TH LOF fr TH 5/31/2007 fracture mechanics CD-LS405 fr TH RT fr TH PLPU fr TH lA fr TH LSL fr TH TRT fr TH SLI fr TH Page 96

Control ~ ed Document A

AREVA Document No. 32-9219781 -002 Diablo Canyon Unit 2 -Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary 14 REFERENCE

[1] AREV..;\ Docutu ent 08-9042937-003 , "Cel'tified Design Specification for Press1.u*izer Nozzle Weld Ove1.days at Pacific Gas and Electric Diablo Canyon Nuclear Po'\ver Plant ~

Unit 2~' .

[2] .A REVA D octuuent 38-9046469-002, Design Input TranstnittaL Non-Proprietmy, DIT-A0675765-03 -00~'

[3] ARE\l'A Doctunent 38-2200488-002, ""Design Input Trans~nittal, Proprietaty~. DIT -

.A0675765-04-00, 01 & . 03"

[4] AREVA Docn1nent 5 1 -9048271-000~ "Diablo Canyon2 P\VOL D esign Transients"

[5] AS1\.*1E Boiler and Pressure v *essel Code* *~ Section It Part D- Properties , 2001 Edition including Addenda tluough 2003

[6] "ASJ\.*IE Boiler and Pressure Vess.el Code"\ Section Ill, 1965 Edition including Addenda through Sunnuer 1966

[7] "ASJviE Boiler and Pressure \ lessel Code"\ Section Ill, 1965 Edition including Addenda through \VTinter 1967

[8] ASl\.*fE Boilell* and Presstu*e \ Tessel Code**. Section Ill, 1968 Edition including Addenda through \Vinter 1969

[9] "AS~fE Boiler and Pressure \ .T es.sel Code"\ Section ill, 1971 Edition

[10] .A..REV.A D*o cutnent NPGD-Tlrvi-500 rev D , '~NP'GlviAT~'~ NPGD :rvfateria] Prope1ties Piogratn~ User's l\.*ianual (03/ 1985)

[11] .A REV.A Dra'l.ving 02 - 8019233-D-001 ~ "Diablo Canyon Pressurizer Spray Nozzle \Veld Overly Design Inpuf'

[12] .A..REV.A Dra\ving 02-8018400C-OOL "'Diablo Canyon l nit l Pressurizer Spray Nozzle Existing Configuration~'

[13] '~ANSYS~' Finite Eletuent Collnputer Code ~ \'ersion 11.0, ANSYS , Inc., Canonsburg, Pa.

[14] ".AS~*IE B oiler and Pressure Vessel Code"\ Section Ill~ Division I~ 2001 Edition including Addenda through 2003

[15] .AREV.A. Doctuuent 32-5032987-106 , "StressRange Program Verification"

[16] '"Cotnpanion Guide to the ASJ\..fE Boiler & Pressure Vessd Code~ \ Volmne L AS1viE Press, N e\v York, 2002

[17] John F. Harvey, * ~Them)~ and Design ofPressure \ressels~', Second Edition, Van Nostran Reinhold~ 1991

[18] "ANSYS" Finite Element Computer Code, Version 14.0, ANSYS , Inc., Canonsburg, PA

[19] AREVA Document 38-9200149-001 , "DCPP Unit 2 Pressurizer Nozzle NDE Data" Page 97

Controlled Document A

AREVA Document No. 32-9219781-002 Diablo Canyon Unit 2- Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary APPENDIX A- Stresses used for Fracture Mechanics Analysis A-1 Purpose The purpose of this Appendix is to provide supplemental stress results of the transient\analysis for fracture mechanics analysis of the Diablo Canyon Unit 2 spray nozzle weld overlay.

A-2 Stress and Temperature Evaluation The ANSYS Post Processor is used to tabulate the stresses and temperatures along the predetennined paths. The paths are shown on Figure A-1 and described in Table A-1. Note that all stresses and temperatures are tabulated from the thermal and structural runs output files listed in Section 9.

For post preprocessor calculation, the definitions of these paths are contained in computer file "min_pathsJr. mac".

Table A-1 Path Description Path Name Inside Node No. Outside Node No.

FPath1 5349 1246 FPath2 5199 1227 FPath3 5197 1183 FPath4 3765 1143 Stresses along the path line are summarized at twelve points separated by an equal distance from the inside node to the outside node. At each point the axial (longitudinal, Sy) stress and the corresponding temperature of the nozzle are given. The path point distances from the inside node are included in the output file "Fr_PathLocs.ouf'.

Stress and temperature result files are included in output files with "_fr_SY, "_fr_SZ" and

"_fr_ Tlf' in their names. They are listed in Section 13 .

Page 98

Controlled Document A

AREVA Document No. 32-9219781-002 Diablo Canyon Unit 2- Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary Figure A-1 Paths Defined for Fracture Mechanics Evaluation Page 99

Controlled Document A

A.REVA. Document No. 32-9219781-002 Diablo Canyon Unit 2- Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary APPENDIX 8- ADDITIONAL STRESSES USED FOR FRACTURE MECHANICS ANALYSIS 8.1 Purpose The purpose of this Appendix is to provide additional stress results of the transient analysis for fracture mechanics analysis of the Diablo Canyon Unit 2 spray nozzle weld overlay. Stress results were evaluated for locations that are in close proximity to the indications found in the Spray Nozzle during 2R17.

8.1.1 Stress and Temperature Evaluation The complete finite element analysis as presented in Rev. 000 was conducted using ANSYS version 11.0 on a 32-bit Windows XP machine. Although the ANSYS results from Rev. 000 are available to extract stress and temperature results at additional path lines, ANSYS 14.0 (Reference [18]) on a 64-bit Windows 7 machine is used for this Appendix and therefore a verification process is performed to ensure all results remain valid under the later version of ANSYS and Windows. Stress and temperature results along the paths defined in Appendix A are first re-produced and then compared with those in Rev. 000. It is verified that all results between two versions of ANSYS (11.0 and 14.0) and Windows (32-bit Windows XP and 64-bit Windows 7) are identical. Detailed ANSYS outputs are listed in Section B.l.2.

The ANSYS post-processing macro used in Appendix A is modified to define different path lines as well as to tabulate the stresses and temperatures along the defined paths in line with the Spray Nozzle NDE indications (see Reference [19]). The paths are shown on Figure B-1 and with node numbers listed in Table B-1.

The definitions of these paths are contained in computer file "min_paths_fr_ AppB .mac".

Table 8-1 Additional Paths in Appendix 8 Path Inside Outside Intermediate Path Name Material Selected No. Node No. Node No. Node No.

1 Flihe1 5104 3271 none Nozzle, WOL 2 Fline2 1265 1257 1194, 1259, 1260 Nozzle, WOL 3 FL2_wol 1265 1257 1194, 1259, 1260 WOL only 4 FL2_noz 1265 1257 1194, 1259, 1260 Nozzle only 5 Fline3 3721 3175 none Safe end, SS weld, WOL 6 Fline4 1145 1141 none SS weld, WOL 7 FL4_wol 1145 1141 none WOL only 8 FL4_wld 1145 1141 none SS weld only Stresses along the path line are summarized at twelve points separated by an equal distance from the inside node to the outside node. At each point the axial (longitudinal, Sy) stress, radial stress (Sx), hoop Page 100

Controlled Document A

AREVA Document No. 32-9219781-002 Diablo Canyon Unit 2- Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary stress (Sz), shear stress (Sxy), and the corresponding temperature of the nozzle are given. The path point distances from the inside node are included in the output file "Fr_PathLocs_AppB.out".

Stress (Sx, Sy, Sz and Sxy) and temperature result files are included in output files with

"_fr_SX_AppB," "_fr_SY_AppB," "_fr_SZ_AppB," "_fr_Sh_AppB" and "_fr_TH" in their names.

They are listed in Section B.-1.2.

Page 101

Control ed Document A

AREVA Document No. 32-9219781-002 Diablo Canyon Unit 2 -Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary 3721 3175 Safe End/Pipe--~

Weld 1145 Detail B Fline4 1257 .

(incl. FL4_wol and FL4_wld)

Safe End SWOL DM Weld and Butter 3271 5104 Y (Axial) 1194 1259 1265 Lx(Radial)

Detail A Fline2 (incl. FL2_wol and FL2_noz)

Nozzle

Only laminar indications are found along path lines FLine2 and Fline 4.

No planar indications were found. Results along path lines Flainel and Fline3 are provided for information only in cases they are needed for future evaluations.

FLine2 is path line used to sample results for evaluating laminar indication

FL2_ wol used SWOL material for extracting stresses

FL2_noz used nozzle material for extracting stresses

Fline4 is path line used to sample results for evaluating laminar indication

FL4_wol used SWOL material for extracting stresses

FL4_wld used weld material for extracting stresses

Details A and B show the node numbers used for defining the path lines as discussed in Table B-1 Figure B-1 Additional Paths for Fracture Mechanics Page 102

ControUed Document A

AREVA Document No. 32-9219781-002 Diablo Canyon Unit 2- Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary Typical stress contour plots at high tem2erature gradients are shown in Figure B-2 for the overlay region duri~

the transient HU-E~ }nd in Figure B-3 during the transient CD( J

Only laminar indications are found along pathlines FLine2 and Fline 4.

No planar indications were found. Results along pathlines vertical pathlines provided for Information only.

Figure 8-2 Stress Plots during HU-ES Page 103

Cant oiled Document A

AREVA Document No. 32-9219781-002 Diablo Canyon Unit 2- Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary

Only laminar indications are found along pathlines FLine2 and Fline 4.

No planar indications were found. Results along pathlines vertical pathlines provided for Information only.

Figure 8-3 Stress Plots during CD-ES405 Page 104

Controlled Document A

AREVA Document No. 32-9219781-002 Diablo Canyon Unit 2 - Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary 8 .1.2 Computer Usage and ANSYS Files ANSYS Version 14.0 is used in this Appendix. It was tested on the computer used for this Appendix (Computer name: SC-MJEHGTA; OS: Windows 7 with 24GB RAM) on October 14,2013 by the preparer. The results of the test (as listed in ANSYS output file "VM112.out" and "VM21l.out") are acceptable.

All ANSYS input/output files are collected and listed in Table B-2. ANSYS verification output files are also listed. All files are available in AREVA Inc. ColdStor storage \cold\General-Access\32\32-9000000\32-9049112-002\official\. The ColdStor installation date is 10/17/2013 for all files.

Table 8-2 Appendix 8 ANSYS files Appendix A regenerated. Sub-directory: . . ¥App-A-benchmark Date and File Name Description Time 10/08/2013 Input file contains path definition in min_path_fr. out 3:54pm Appendix A 10/08/2013 Output file contains the path point Fr_Pathlocs. out 3:54pm distances from the inside node HU-ES_fr_SY HU-ES_fr_SZ HU-LS_fr_SY HU-LS_fr_SZ CD-ES 320_fr_SY CD-ES 320_fr _SZ CD-LS 320_fr _SY CD-LS 320_fr _SZ CD-ES 405_fr _SY CD-ES 405_fr _SZ CD-LS 405_fr _SY CD-LS 405_fr _SZ PLPU_fr_SY PLPU_fr_SZ LSL_fr_SY LSL_fr_SZ 10/08/2013 Stress results regenerated as in Appendix SLI_fr _SY SLI_fr _sz 3:54pm A SLD_fr_SY SLD_fr_SZ BCE_fr_SY BCE_fr_SZ LOL_fr_SY LOL_fr_SZ LOP_fr_SY LOP_fr_SZ LOF_fr_SY LOF_fr_SZ RT_fr_SY RT_fr_SZ IA_fr_SY IA_fr_SZ TRT_fr_SY TRT_fr_SZ HU-ES_fr_TH SLD_fr_TH 10/08/2013 Temperature results regenerated as in HU-LS_fr_TH BCE_fr_TH 3:54pm Appendix A CD-ES320_fr_TH LOL_fr_TH Page 105

Controlled Document A

AREVA Document No. 32-9219781-002 Diablo Canyon Unit 2- Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary CD-LS 320_fr _TH LOP_fr_TH CD-ES 405_fr _TH LOF_fr_TH CD-LS 405_fr _TH RT_fr_TH PLPU_fr_TH IA_fr_TH LSL_fr_TH TRT_fr_TH SLI_fr _TH Table B-2 Appendix 8 ANSYS files (conti.)

Appendix 8 results. Sub-directory: . . ¥App-B File Name Date Description 10/17/20 min_path_fr_AppB.out 13 Input file contains path definition in Appendix B 1:21pm 10/17/20 Output file contains the path Fr_Pathlocs_AppB.out 13 point distances from the inside 1:21 pm node HU-ES_fr_SY_AppB HU-ES_fr_SZ_AppB HU-ES_fr_SX_AppB HU-ES_fr_Sh_AppB HU-LS_fr _SY_AppB . HU-LS_fr_SZ_AppB HU-LS_fr_SX_AppB HU-LS_fr_Sh_AppB CD-ES 320_fr_SY_AppB CD-ES 320_fr_SZ_AppB CD-ES 320_fr_SX_App8 CD-ES 320_fr_Sh_AppB CD-LS 320_fr_SY_AppB CD-LS 320_fr_SZ_AppB CD-LS 320_fr_SX_AppB CD-LS 320_fr_Sh_App8 CD-ES 405_fr_SY_AppB CD-ES 405_fr_SZ_AppB CD-ES 405_fr_SX_AppB CD-ES 405_fr_Sh_AppB 10/17/20 CD-LS 405_fr_SY_AppB CD-LS 405_fr_SZ_AppB 13 Stress results in Appendix B CD-LS 405_fr_SX_App8 CD-LS 405_fr_Sh_AppB 1:21pm PLPU_fr_SY_AppB PLPU_fr_SZ_AppB PLPU_fr_SX_AppB PLPU_fr_Sh_AppB LSL_fr_SY_AppB LSL_fr_SZ_AppB LSL_fr_SX_AppB LSL_fr_Sh_AppB SLI_fr _SY_AppB SLI_fr _SZ_AppB SLI_fr _SX_AppB SLI_fr _Sh_AppB SLD_fr_SY_AppB SLD_fr_SZ_AppB SLD_fr_SX_AppB SLD_fr_Sh_AppB BCE_fr_SY_AppB BCE_fr_SZ_AppB Page 106

Controlled Document A

AREVA Document No. 32-9219781-002 Diablo Canyon Unit 2- Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary BCE_fr_SX_AppB BCE_fr_Sh_AppB LOL_fr_SY_AppB LOL_fr_SZ_AppB LOL_fr_SX_AppB LOL_fr_Sh_AppB LOP_fr_SY_AppB LOP_fr_SZ_AppB LOP_fr_SX_AppB LOP_fr_Sh_AppB LOF_fr_SY_AppB LOF_fr_SZ_AppB LOF_fr_SX_AppB LOF_fr_Sh_AppB RT_fr_SY_AppB RT_fr_SZ_AppB RT_fr_SX_AppB RT_fr_Sh_AppB IA_fr_SY_AppB IA_fr_SZ_AppB IA_fr_SX_AppB IA_fr_Sh_AppB TRT_fr_SY_AppB TRT_fr_SZ_AppB TRT_fr_SX_AppB TRT_fr _Sh_AppB Page 107

Controlled Document A

AREVA Document No. 32-9219781-002 Diablo Canyon Unit 2- Pressurizer Spray Nozzle Weld Overlay Structural Analysis- Non Proprietary Table 8-2 Appendix 8 ANSYS files (conti.)

Appendix B results. Sub-directory: .. ¥App-B File Name Date Description HU-ES_fr_TH_AppB SLD_fr_TH_AppB HU-LS_fr_TH_AppB BCE_fr_TH_AppB CD-ES 320_fr_TH_App8 LOL_fr_TH_AppB CD-LS 320_fr_TH_App8 LOP_fr_TH_AppB 10/17/2013 CD-ES 405_fr_TH_App8 LOF_fr_TH_AppB Temperature results in Appendix B 1:21 pm CD-LS 405_fr_TH_App8 RT_fr_TH_AppB PLPU_fr_TH_AppB IA_fr_TH_AppB LSL_fr_TH_AppB TRT_fr_TH_AppB SLI_fr_TH_AppB 10/14/2013 VM112.out 9:28am ANSYS verification output files 10/14/2013 VM211. out 9:32am Page 108

Controlled Document 0402-01-F01 (Rev. 018, 01/30/2014)

A CALCULATION

SUMMARY

SHEET (CSS)

AREVA DocumentNo. 32 - 9219792 - 002 Safety Related: ~Yes D No Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-Title NonProprietary PURPOSE AND

SUMMARY

OF RESULTS:

The purpose of this report is to document the weld residual stress finite element analysis of the pressurizer spray nozzle of Diablo Canyon Unit 2 in support of the planned preemptive mitigation of primary water stress corrosion cracking (PWSCC) susceptible Alloy 82/182 dissimilar metal welds using PWSCC resistant Alloy 52M full structural weld overlays (SWOL). The state of residual stresses at shutdown (70F) and steady state (653F) after the completion of the SWOL, as predicted by the ANSYS Version 10.0 finite element analysis, are summarized to support flaw evaluations of the pressurizer spray nozzle design.

The purpose of Revision 002 is to revise the proprietary markings. The results from Revision 000 through 006 remain unchanged and valid.

Proprietary information is contained within bold square brackets"[ ]".

Westinghouse proprietary information is contained within blue boxes.

This document is the Non-Proprietary document for 32-9049061-007.

THE DOCUMENT CONTAINS ASSUMPTIONS THAT SHALL BE THE FOLLOWING COMPUTER CODES HAVE BEEN USED IN THIS DOCUMENT: VERIFIED PRIOR TO USE CODENERSION/REV CODENERSION/REV ANSYS Version 10.0 & ANSYS Version 14.0 & Operating DYes Operating System : Not Known System : Win 7 (Revision 004) )

(Rev 000 through Rev 003) ~No Page 1 of 28

Controlled Doc11ment A 0402-01-F01 (Rev. 018, 01/30/2014)

ARE VA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary Review Method: IS] Design Review (Detailed Check)

D Alternate Calculation Signature Block P/R/A Name and Title and Pages/Sections (printed or typed) Signature LP/LR Date Prepared/Reviewed/Approved Samer H Mahmoud Principal Engineer ~ p

~-1'--'~ All.

Tom Riordan

~ R 12SEP2014 All.

Engineer III Tim M Wiger Engineering Manager --p;i~

A 1/z!tf All.

Note: P/R/A designates Preparer (P), Reviewer (R), Approver (A);

LP/LR designates Lead Preparer (LP), Lead Reviewer (LR)

Project Manager Approval of Customer References (N/A if not applicable)

Name Title (printed or typed) (printed or typed) Signature Date N/A N/A N/A N/A Mentoring Information (not required per 0402-01)

Name Title Mentor to:

(printed or typed) (printed or typed) (P/R) Signature Date N/A N/A N/A N/A N/A Page 2

Controlled Document A 0402-01-F01 (Rev. 018, 01/30/2014)

AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary Record of Revision Revision Pages/Sections/

No. Paragraphs Changed Brief Description I Change Authorization 000 All Original Release 006 css Added purpose of revision Throughout Removed proprietary markings from material names and added Westinghouse proprietary indicators.

Section 6.0 Updated References 007 Throughout Updated proprietary markings Section 6.0 Updated References Non-Proprietary document for 32-9049061-007.

Page 3

Controlled Document A

AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary Table of Contents Page SIGNATURE BLOCK ................................................................................................................................ 2 RECORD OF REVISION .......................................................................................................................... 3 LIST OF TABLES ..................................................................................................................................... 5 LIST OF FIGURES ..............*........................................ .............................................................................. 6 1.0 PURPOSE .....................................................................................................................................7 2.0 ANALYTICAL METHODOLOGY .......................................................................................*............ 7 3.0 KEY ASSUMPTIONS .................................................................................................................... 8 4.0 DESIGN INPUT ............................................................................................................................. 8 4.1 Geometry ............................................. ............................................................................................. 8 4.2 Finite Element Model. ........ ............................. ......... ......................................................................... 8 4.3 Materials ........................................................................................................................................... 9 4.4 Welding Parameters ...................................................................... ................................................. 10 4.5 Boundary Conditions .................................................. ... ............... .................................................. 10 4.5.1 Thermal Analysis ............................................................................................................. 10 4.5.2 Structural Analysis ........................................................................................................... 10 5.0 FINITE ELEMENT RESULTS/

SUMMARY

.................................................................................. 11

6.0 REFERENCES

...................................... ~ ..................................................................................... 12 7.0 COMPUTER OUTPUT ........................................................................... ;.................................... 13 8.0 FIGURES SECTION ................................................................................................................... 14 APPENDIX A: AXIAL AND HOOP STRESS TABLES ................. .. ......................... ............ ............................... 23 APPENDIX B : VERIFICATION OF THE FINITE ELEMENT PROGRAM ....... ....... ............................................... 25 APPENDIX C: STRESS FOR EVALUATING NDE INDICATIONS .... ............................................ ..... ... ............ 26 Page4

Controlled Document A

AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary List of Tables Page Table 4-1: Dimensions of Spray Nozzle Design and SWOL .................................................................... 8 Table 4-2: Component Material Designation ........................................................................................... 9 Table 4-3: Welding Parameters ............................................................................................................. 10 Table 7-1: Computer Output Files for Fracture Mechanics Analysis* .................................................... 13 Table A-1: Through-wall axial and hoop stress distributions at shutdown (?OF) ................. ................ .. 23 Table A-2: Through-wall axial and hoop stress distributions at steady state (653F) ............................. 24 Table C-1: Bounding Radial and Shear Stresses for Interfacial Path lines ............................................ 27 Table C-2: Through-wall axial and hoop stress distributions for vertical path lines at shutdown (70°F) ............................................................................................................................................... 27 Table C-3: Computer Files ..................................................................................................................... 28 Page 5

Controlled Document A

AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary List of Figures Page Figure 1: Welding of the stainless steel safe end to the pressurizer spray nozzle using Alloy 82/182 weld metal ............................................................................................................................... 14 Figure 2: Removal of weld material from the inner surface of the DMW and replacement of the cavity with Alloy 182 weldment to simulate a weld repair ................................................................. 14 Figure 3: Welding of the liner to the inside surface of the nozzle .......................................................... 14 Figure 4: Welding of the stainless steel pipe to the safe end using stainless steel weld metal ............. 14 Figure 5: Welding of an Alloy 52M SWOL onto the outer surface, covering the nozzle, the DMW, and the stainless steel weld ............ ................................................................................................. 14 Figure 6: Finite element mesh for the spray nozzle design and SWOL ................................................. 15 Figure 7: Weld passes employed in the DMW ....................................................................................... 16 Figure 8: Weld passes employed for the weld repair and in the stainless steel weld ............................ 16 Figure 9: Weld passes employed in the SWOL and liner weld .............................................................. 16 Figure 10: Axial and hoop stress contours at shutdown (70F) obtained by applying two operating load cycles following the completion of the SWOL ........................................................................... 17 Figure 11: Axial and hoop and stress contours at steady state (653F) obtained by applying two-and-a-half operating load cycles following the completion of the SWOL ......................................... 18 Figure 12: Path lines for axial and hoop WRS distribution along the ID surfaces .................................. 19 Figure 13: Path lines for the through-wall axial and hoop WRS distribution in the DMW region and the stainless steel weld .................................................................................................................... 19 Figure 14: Axial and hoop stress distributions along the DMW ID surface at steady state (653F) obtained by applying two-and-a-half operating load cycles following the completion of the SWOL ............................................................................................................................................... 20 Figure 15: Axial and hoop stress distributions along the liner weld ID surface at steady state (653F) obtained by applying two-and-a-half operating load cycles following the completion of the SWOL ............................................................................................................................................... 20 Figure 16: Through-wall axial stress distributions at shutdown (70F) obtained by applying two operating load cycles following the completion of the SWOL. .......................................................... 21 Figure 17: Through-wall hoop stress distributions at shutdown (70F) obtained by applying two operating load cycles following the completion of the SWOL. .......................................................... 21 Figure 18: Through-wall axial stress distributions at steady state (653F) obtained by applying two-and-a-half operating load cycles following the completion of the SWOL shutdown ......................... 22 Figure 19: Through-wall hoop stress distributions at steady state (653F) obtained by applying two-and-a-half operating load cycles following the completion of the SWOL ......................................... 22 Figure C-1: Spray Nozzle Path Lines ..................................................................................................... 26

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary 1.0 PURPOSE Alloy 600 and its associated weldments Alloy 82/182 are susceptible to primary water stress corrosion cracking (PWSCC). Pacific Gas and Electric plans to mitigate PWSCC in the Diablo Canyon Unit 2 pressurizer nozzle Alloy 82/182 dissimilar metal weld (DMW) with full structural weld overlays (SWOL) using PWSCC resistant Alloy 52M.

The planned mitigation using Alloy 52M SWOL is a preemptive measure to reduce the PWSCC susceptibility of the DMW.

A weld residual stress (WRS) finite element analysis for the pressurizer spray nozzle is performed to develop WRS distributions in support of the fracture mechanics analysis of postulated flaws in the DMW and the stainless steel weld (SSW) between the safe end and piping.

2.0 ANALYTICAL METHODOLOGY The WRS finite element analysis is carried out per the Reference [1] WRS analysis procedure. The various stages of the welding processes for the structural components, the weld repair, and the SWOL, along with test and operating conditions, are simulated in the finite element analysis using the following sequential steps:

1. Welding of the stainless steel safe end to the pressurizer spray nozzle using Alloy 82/182 weld metal.

2. Removal of weld material from the inner surface of the DMW and replacement of the cavity with Alloy 182 weldment to simulate a weld repair.

3. Welding of the liner to the inside surface of the nozzle.

4. Simulation of hydro test.

5. Welding of the stainless steel pipe to the safe end using a stainless steel weld metal.

6. Simulation of hydro test.

7. Simulation of operational loads.

8. Welding of an Alloy 52M SWOL onto the outer surface, covering the nozzle, the DMW, and the stainless steel weld.

9. Simulation of operational loads.

Figure 1 to Figure 5 illustrate these stages.

The general purpose finite element code ANSYS [2] is used to perform the WRS finite element analysis. The finite element analysis is based on a two-dimensional axisymmetric model. The basic steps comprising the multi-pass welding simulation of the DMW, the weld repair, the stainless steel weld, and the SWOL are as follows:

Develop the finite element model considering features necessary to accommodate weld pass deposition and weld repairs.

Define the temperature range for melting (solidus and liquidus temperatures).

Define thermal and mechanical temperature dependent material properties from room temperature up to and including the melting region.

Define thermal and structural boundary conditions.

Define volumetric heat sources from welding procedure specifications.

Thermal phase using the ANSYS "birth and death" feature o Deactivate finite elements in all weld passes.

o Activate one weld pass at a time and perform transient thermal analysis to develop the history of the temperature field for subsequent structural analysis.

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Structural phase using the ANSYS "birth and death" feature o Deactivate elements in all weld passes.

o Activate one weld pass at a time and perform static structural elastic-plastic analysis using the temperature history from the thermal phase.

Perform additional static load steps to simulate hydrostatic testing, steady state operation, and thermal cycling.

3.0 KEY ASSUMPTIONS There are no major assumptions for this calculation. Minor assumptions are noted where applicable.

4.0 DESIGN INPUT 4.1 Geometry The detailed dimensions of the spray nozzle design and SWOL modeled in the WRS finite element analysis are obtained from [3] and [4] and are shown in Table 4-1. The liner weld is modeled larger than what the original configuration drawing [3] represents it to be. The larger liner weld is essentially a large ID weld repair, which would tend to lead to conservatively higher residual stresses in that region.

Table 4-1: Dimensions of Spray Nozzle Design and SWOL

- 1 Min Weld Overlay Thickness (at nozzle side)

I

[ l I 4.2 Finite Element Model The finite element model is a two-dimensional axisymmetric model. The finite element mesh consists of ANSYS four-node thermal (axisymmetric PLANE55) and structural (axisymmetric PLANE182) elements. The B-bar method of selective reduced integration is used for the structural elements in order to avoid mesh locking due to near incompressibility condition at large plastic strains. The weld pass depositions are simulated using ANSYS' element "birth and death" feature.

The finite element mesh for the spray nozzle design and SWOL is shown in Figure 6. The DMW and stainless steel welds are sufficiently separated from the boundaries of the model that the "end effects" do not significantly affect stresses in the welds. The dimensions of the finite element model are developed per drawings [3] and [4].

The weld passes employed in the DMW, the weld repair, the liner weld, the stainless steel weld, and the SWOL are shown in Figure 7, Figure 8, and Figure 9, respectively.

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary 4.3 Materials Reference [5] provides the component material designation of various components modeled in the WRS analysis, as summarized in Table 4-2.

Table 4-2: Component Material Designation Component Material Designation Nozzle SA-508 Class 2 Safe End SA-182 Grade F316L Nozzle to Safe End Weld Alloy 82/182 Buttering Weld Alloy 182 Liner SA-213, TP 304 stainless steel Pipe SA-376 Grade TP316 Safe End to Pipe Weld E308 austenitic stainless steel filler Weld Overlay Alloy 52M The analysis herein uses the physical properties (thermal conductivity, specific heat, mean coefficient of thermal expansion, density, Young's modulus, and Poisson's ratio) and the stress-strain curves from Reference [6] that are representative of the materials in Table 4-2. All of the physical and mechanical properties, except the Poisson's ratio, are temperature dependent.

The multi-linear kinematic hardening model in ANSYS is employed in the elastic-plastic structural analysis.

Temperature dependent, true stress-strain material properties are used with the multi-linear kinematic hardening model for simulating the structural phase of the welding procedure.

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary 4.4 Welding Parameters The welding parameters used in the modeling of the welding processes are shown in Table 4-3.

Table 4-3: Welding Parameters Welding Parameter Value I

4.5 Boundary Conditions 4.5.1 Thermal Analysis The thermal model is loaded by a volumetric heat source applied to each weld pass. To enforce thermal continuity with adjacent components, adiabatic boundary conditions are applied at the nozzle end (where it attaches to the vessel) and at the end of the piping section modeled. Thus no heat transfer occurs through the two ends of the model shown in Figure 6. Heat loss at the inner and outer surfaces is simulated using a heat transfer coefficient of

[ ] BTU/hr-ff-°F per the Reference [1] WRS procedure to model natural convection to an air environment.

Radiative boundary conditions are not considered since radiation losses from the molten weld pool are included in the weld efficiency.

4.5.2 Structural Analysis The temperature history from the thermal analysis is used as the thermal load in the structural analysis. A traction free boundary condition is maintained on all external surfaces of the finite element model. The finite element model is constrained against rigid body translation and rotation by eliminating axial displacements at the nozzle end.

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary 5.0 FINITE ELEMENT RESULTS/

SUMMARY

Following the completion of the SWOL simulation, two operating load cycles were applied to the finite element model to obtain a stable state of residual stress to simulate shakedown. This stress state is referred to as shutdown at 70F. The axial and hoop stress contours at shutdown (?OF) are shown in Figure 10. Following shutdown at 70F, an additional half cycle of operating loads were applied to the finite element model to obtain the sustained stresses under steady state condition at 653F. Figure 11 shows the axial and hoop stress contours at the steady state (653F).

PWSCC is only a concern when the conditions of high temperature, corrodant, and high tensile stress state in a susceptible material are met simultaneously. Alloy 82/182 is a material that is susceptible to PWSCC. The operating temperature of the pressurizer spray nozzle design is conducive to PWSCC.

Figure 14 shows the steady state (653F) axial and hoop stress distributions along a path line ("IDSURF1") at the DMW inner surface. Figure 15 shows the steady state axial and hoop stress distributions along a path line

("IDSURF2") at the inner surface of the liner weld and safe end. These path lines (shown in Figure 12) includes the surfaces of the nozzle, the butter, the repair weld, the DMW, the liner weld, and the safe end. It is seen that the axial and hoop stresses are all compressive along the inner SLJrface of the DMW region, thus showing the effectiveness of SWOL as a preemptive measure to reduce the PWSCC susceptibility of the DMW.

The through-wall axial and hoop stress distributions, along three path lines in the DMW region and one path line in the SSW, at shutdown (?OF) are shown in Figure 16 and Figure 17, respectively. These path lines are defined in Figure 13. These axial and hoop stress distributions at shutdown (70F) are part of the sources of stress to be used in fatigue crack growth evaluations. They are tabulated in Appendix A.

The through-wall axial and hoop stress distributions at steady state (653F) are given in Figure 18 and Figure 19 respectively, using the same path lines defined in Figure 13. These axial and hoop stress distributions at steady state (653F) are part of the required stress input to the PWSCC crack growth evaluations. They are also tabulated in Appendix A.

As pointed out in Section 4.1, the liner weld has been modeled somewhat larger than described in the original configuration drawing [3]. The larger size produces conservatively higher residual stresses in what is in effect a large ID weld repair. These stresses are highly localized, as evidenced by the stress plots shown in Figure 18 and Figure

19. In these Figures, Path FR_3 is adjacent to the liner weld . A comparison of the inside surface stresses for all three paths FR_1 to FR_3 shows that these stresses are very similar, such that the liner weld does not significantly impact the inside surface stresses along Path FR_3.

Analysis of a similar pressurizer nozzle [8] more closely models the design size of the liner weld. In this analysis, the ID (i.e., wetted) surface of the liner weld presents residual compressive stress, rather than the tensile residual stress predicted in this calculation. While residual tensile stress in the liner weld ID surface is suggestive of susceptibility to PWSCC, the actual stress state in this nozzle is likely to be compressive, as it is in Reference [8], and therefore of little or no susceptibility to PWSCC. In either case, in the unlikely case that the liner weld was to fail, exposure of the underlying low-alloy steel nozzle material to borated reactor coolant water not of concern because of the lack of oxygen in the pressurizer steam space- the boric acid corrosion mechanism is inactive without oxygen.

Additionally, the WRS analysis conservatively assumed that a large inside surface weld repair exists in the DM weld, whereas weld records at Diablo Canyon confirm that is not the case. No weld repairs were made to the inside surface of the DM weld. The effect of the weld repair can be seen in the results shown in Figure 18 and 19 along Path FR_2 which shows significantly higher stresses in the vicinity of the repair than paths FR_1 and FR_3.

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6.0 REFERENCES

L AREVA NP Document 32-2500013-001, "Technical Basis for Numerical Simulation of Welding Residual Stresses."

2. "ANSYS" Finite Element Computer Code, Version 10.0, ANSYS Inc., Canonsburg, PA.

3. AREVA NP Drawing 02-8018400C-002, "Diablo Canyon Unit 2 Pressurizer Spray Nozzle Existing Configuration."

4. AREVA NP Drawing 02-8019233D-001, "Diablo Canyon Pressurizer Spray Nozzle Weld Overlay Design Input."

5. AREVA NP Document 08-9042937-003, ".Pressurizer Nozzle Weld Overlays at Pacific Gas and Electric Diablo Canyon Nuclear Power Plant, Unit 2 - Certified Design Specification"

6. AREVA NP Document 32-2500012-002, "Materials Database for Weld Residual Stress Finite Element Analyses."

7. AREVA NP Document 55-WP3-8-F430LTBSCa3-005, "Welding Procedure Specification."

8. AREVA NP Document 32-9049062-006, "Diablo Canyon Unit 2 Pressurizer Safety/ReliefNozzle Weld Overlay Residual Stress Analysis."

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary 7.0 COMPUTER OUTPUT The computer output files that support the fracture mechanics analysis are listed in Table 7-1.

Table 7-1: Computer Output Files for Fracture Mechanics Analysis*

File Name Date Description SDAXIAL.out 5-23-2007 Axial stress along all four path lines at shutdown (70F)

SDHoop.out 5-23-2007 Hoop stress along all four path lines at shutdown (70F)

SDLocs.out 5-23-2007 Path coordinates for all four path lines at shutdown (70F)

SDLocX.out 5-23-2007 Path x coordinates for all four path lines at shutdown (70F)

SDLocY.out 5-23-2007 Path y coordinates for all four path lines at shutdown (70F)

OCAXIAL.out 5-23-2007 Axial stress along all four path lines at steady state (653F)

OCHoop.out 5-23-2007 Hoop stress along all four path lines at steady state (653F)

OCLocs.out 5-23-2007 Path coordinates for all four path lines at steady state (653F)

OCLocX.out 5-23-2007 Path x coordinates for all four path lines at steady state (653F)

OCLocY.out 5-23-2007 Path y coordinates for all four path lines at steady state (653F) vm32-Modified. vrt 5-22-2007 Axisymmetric analysis of thermal stresses in an infinitely long cylinder. Verification Case for elements PLANE55 and PLANE182.

vm38-Modified.vrt 5-22-2007 Axisymmetric analysis of elastic plastic problem of an infinitely long cylinder under pressure. Verification Case for element Plane182.

Note: The computer output from Revision 000 of this document is unchanged and remains applicable to Revision 003. It is therefore not attached to Revision 003. The list of computer output is provided for information only.

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary 8.0 FIGURES SECTION Figure 1: Welding of the stainless steel safe end to the pressurizer spray nozzle using Alloy 82/182 weld metal Figure 2: Removal of weld material from the inner surface of the DMW and replacement of the cavity with Alloy 182 weldment to simulate a weld repair Figure 3: Welding of the liner to the inside surface of the nozzle Figure 4: Welding of the stainless steel pipe to the safe end using stainless steel weld metal Figure 5: Welding of an Alloy 52M SWOL onto the outer surface, covering the nozzle, the DMW, and the stainless steel weld Page 14

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary Figure 6: Finite element mesh for the spray nozzle design and SWOL OM Weld with Repair Stainless Steel Weld Page 15

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary Figure 7: Weld passes employed in the DMW Figure 8: Weld passes employed for the weld repair and in the stainless steel weld Figure 9: Weld passes employed in the SWOL and liner weld Page 16

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary Figure 10: Axial and hoop stress contours at shutdown (70F) obtained by applying two operating load cycles following the completion of the SWOL Page 17

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary Figure 11: Axial and hoop and stress contours at steady state (653F) obtained by applying two-and-a-half operating load cycles following the completion of the SWOL Page 18

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary Figure 12: Path lines for axial and hoop WRS distribution along the ID surfaces Figure 13: Path lines for the through-wall axial and hoop WRS distribution in the DMW region and the stainless steel weld Page 19

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary Figure 14: Axial and hoop stress distributions along the DMW ID surface at steady state (653F) obtained by applying two-and-a-half operating load cycles following the completion of the SWOL Figure 15: Axial and hoop stress distributions along the liner weld ID surface at steady state (653F) obtained by applying two-and-a-half operating load cycles following the completion of the SWOL Page 20

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary Figure 16: Through-wall axial stress distributions at shutdown (70F) obtained by applying two operating load cycles following the completion of the SWOL Figure 17: Through-wall hoop stress distributions at shutdown (70F) obtained by applying two operating load cycles following the completion of the SWOL Page 21

Contro~led Document AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary Figure 18: Through-wall axial stress distributions at steady state (653F) obtained by applying two-and-a-half operating load cycles following the completion of the SWOL shutdown Figure 19: Through-wall hoop stress distributions at steady state (653F) obtained by applying two-and-a-half operating load cycles following the completion of the SWOL Page 22

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary APPENDIX A: AXIAL AND HOOP STRESS TABLES Figure 13 shows the path lines along which the stress results are obtained. The axial and hoop WRS distribution at the completion of the SWOL at shutdown and steady state operating conditions are listed in Table A-1 and Table A-2 respectively.

Table A-1: Through-wall axial and hoop stress distributions at shutdown (70F)

Along Path Line "FR 1" Along Path Line "FR 2" Distance Distance Along Path Along Path Line from Axial WRS Hoop WRS Line from the Axial WRS Hoop the ID (in.) (psi) (psi) ID (in.) (psi) WRS (psi)

Along Path Line "FR 3" Along Path Line "FR 4" Distance Distance Along Path Along Path Line from AxiaiWRS HoopWRS Line from the AxiaiWRS Hoop the ID (in.) (psi) (psi) ID (in.) (psi) WRS (psi)

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary Table A-2: Through-wall axial and hoop stress distributions at steady state (653F)

Alon Path Line "FR 1" AIOn Path Line "FR 2" Distance Distance Along Path Along Path Line from Axial WRS HoopWRS Line from the Axial WRS the ID in. ID in.

Along Path Line "FR 3" Along Path Line "FR 4" Distance Distance Along Path Along Path Line from Axial WRS HoopWRS Line from the AxiaiWRS Hoop the ID (in.) (psi) (psi) ID (in.) (psi) WRS (psi)

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary APPENDIX 8: VERIFICATION OF THE FINITE ELEMENT PROGRAM The following two verification cases were run to verify that the finite element program ANSYS [2] executes properly. The two cases were selected to verify the elements used in the current analysis (plane 55 and plane 182) for the scope of the simulations used in this document, thermal stress analysis in an infinitely long cylinder and elastic plastic structural analysis in a cylinder. For the thermal stress analysis case, the standard ANSYS verification case (vm32) is setup to verify plane 55 (thermal) and plane 42 (structural). This case was modified to replace plane 42 structural element with plane 182. For the elastic plastic case, the ANSYS verification test case was setup to handle plane 42, this case was modified to verify the plane 182 element instead of the plane 42 structural element. The results of the verification cases are presented below:

VM32-Modified RESULTS COMPARISON ---------------

I TARGET I ANSYS I RATIO THERMAL ANALYSIS:

T (C) X=.1875 in -1.00000 -1 .00000 1.000 T (C) X=.2788 in -0.67037 '-0.67039 1.000 T (C) X=0.625 in 0.00000 0.00000 0.000 PRINTOUT RESUMED BY /GOP STATIC ANALYSIS:

A_STS psi X=.187 420.42 429.99 1.023 T_STS psi X=.187 420.42 429.61 1.022 A_STS psi X=.625 -194.58 -205.15 1.054 T_STS psi X=.625 -194.58 -205.08 1.054

VM38-Modified RESULTS COMPARISON ---------------

I TARGET I ANSYS I RATIO FULLY ELASTIC, PLANE182 RESULTS:

SIGR LFT_END psi -9984. -10075. 1.009 SIGT LFT_END psi 18645. 18785. 1.008 SIGR RT_END psi -468. -478. 1.021 SIGT RT_END psi 9128. 9131. 1.000 FULLY PLASTIC, PLANE182 RESULTS:

SIGEFF L 30000. 31239. 1.041 SIGEFF R 30000. 30442. 1.015 This is modified from ANSYS VM38 case to verity the PLANE182 Element solving a problem of Long Cylinder under plastic Pressure Load Page 25

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary APPENDIX C: STRESS FOR EVALUATING NDE INDICATIONS C.1 Purpose The purpose of this appendix is to summarize residual stresses to support flaw evaluations of indications detected or assumed to exist based on the results of the 2013 seventeenth refueling outage (2R17) inservice inspection that are considered rejectable in the overlaid Pressurizer (PZR) Spray Nozzles of Diablo Canyon Power Plant (DCPP) Unit 2. The indications are reported in Reference [C1]. Results are provided along pathlines that are located in close proximity to the found indications in the Spray nozzle.

C.2 Methodology This revision provided only post processing of the database that was developed in the previous revision of the document. Path lines for obtaining the residual stresses were selected to best match the locations and sizes of the flaw indications as described in Reference [C1]. It should be noted that since the finite element is discrete and it does not exactly match the sketches of the Spray Nozzles provided in Reference [C1], the selected path lines location and sizes are only a best estimate representation of the indications locations and sizes. For every reportable indications two path lines were selected, an interfacial (horizontal path line) and a vertical path line.

The interfacial path line is used to sample stresses to be used for evaluating a laminar flaw. Thus radial and shear stresses are of interest for the interfacial path line. The vertical path line is used to sample stresses to be used for evaluation any planar projection of the indications. Axial, hoop stresses, or both axial and hoop stresses may be used for evaluating the planar extent of the indications. The pathlines investigated in this appendix are illustrated in Figure C-1. Note that all reported indications in the Spray nozzle were laminar. Thus only the path line along the interface between the nozzle and weld overlay (path line 1) and the path line along the interface between the safe end to pipe weld and the weld overlay (pathline 2) are need for flaw evolution of the reported indications in the Spray nozzle. The vertical pathlines in Figure C-1 (pathlines 1v and 2v) are included for information only since they are not needed for flaw evaluations.

Figure C-1: Spray Nozzle Path Lines C.3 Results Axial (SY), hoop (SZ), radial (SX), and shear (SXY) stresses are read from the database and the result files that were archived with the previous revisions of this document. To ensure that the stress sampling results in the most bounding stresses for the path lines located near the interface of the overlay and the original material (nozzle), the post processing for interfacial path lines was processed while selecting either the overlay material, the nozzle material, or both materials.

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AR *EVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary C.3.1 Interfacial Path lines Results As mentioned above, the interfacial path lines are of interest for evaluating laminar flaws. Thus, only the radial and shear stresses are of interests. As discussed before, for all interfacial paths, the post processing runs were performed by either selecting all materials, overlay material, or nozzle material. The results are documented in output files "Spray_pathsALL.out", "Spray_pathsOL.out" and "Spray_pathsBASE.out". The results from the output files are manipulated in files "Results.xlsm" to select most bounding stresses. The minimum and maximum values of the radial and shear stresses are tabulated in Table C-1.

Table C-1: Bounding Radial and Shear Stresses for Interfacial Path lines Nozzle Radial Stress (psi) Shear Stress (psi)

Minimum Maximum Minimum Maximum Spray Nozzle (1) [ ] [ ] [ ] [ ]

Spray Nozzle (2) [ ] [ ] [ ] [ ]

C.3.2 Vertical Path lines Results All reported indications in the Spray nozzle were laminar. Thus only the interfacial pathlines along the interface between weld overlay and the underlying materials (Path lines 1 and 2 in Figure C-1) are needed for flaw evaluations. The vertical pathlines (Pathlines 1v and 2v in Figure C-1) are included for information only since they are not needed for flaw evaluations. Vertical pathlines are typically required for analyzing planar flaws where only axial and hoop stresses are of interest in the analysis. The post processing was performed by selecting all materials. The results are documented in output files "Spray_pathsALL.out". The hoop and axial stresses are tabulated below in Table C-2.

Table C-2: Through-wall axial and hoop stress distributions for vertical path lines at shutdown (70°F)

Along Path Line "1 V" Along Path Line "2V" Distance Distance Along Path HoopWRS AxiaiWRS Along Path Hoop AxiaiWRS Line from the (psi) (psi) Line from WRS (psi) (psi)

ID (in.) the ID (in.)

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AREVA Document No. 32-9219792-002 Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis-NonProprietary C.4 Computer Usage C.4.1 Software and Hardware ANSYS Version 14.0 [C2] was used in this calculation. Verification test cases were performed and documented herein.

Computer program tested: ANSYS Version 14.0, verification tests vm32mod2D.vrt and vm38mod2D. vrt.

Error notices for ANSYS Version 14.0 were reviewed and none apply for this analysis.

Computer hardware used: The computer hardware used in the analysis is DELL (Service Tag #

5VKW5S1). The hardware platform is Intel Core' i7-2640M CPU @ 2.8 GHz, 8 GB RAM and operating system is Microsoft Windows 7 Enterprise x 64 Edition, Version 2009, and Service Pack 1.

Name of person running the test: Silvester Noronha

Date of test: 11-05-2013

Acceptability: For ANSYS 14.0 cases vm32mod2D, vm38mod2D, obtained from Reference [1] are run to verify that the answers are correct. The files vm32mod2D.vrt and vm38mod2D.vrt contain output from the test cases. Review of the output shows that the answers are identical to those contained in Reference [1].

C.4.2 Computer Files All ANSYS inpuUoutput files are collected and listed in Table C-3. All computer runs and post processing along with post processing macros are documented in the ColdStor storage path "\cold\Generai-Access\32\32-9000000\32-9049061-004\official". ANSYS verification inpuUoutput files are also listed.

Table C-3: Computer Files Name Size Date/Time Modified Checksum PostProcess_SprayALL.inp 4050 Nov 08 2013 15:43:28 61422 PostProcess SprayOL.inp 4055 Nov 13 2013 09:22:33 48955 PostProcess_SprayBASE.inp 4048 Nov 13 2013 09:15:17 29056 Spray_pathsALL.out 5578 Nov 08 2013 15:44:24 25282 Spray_pathsOL.out 5578 Nov 13 2013 09:22:55 33218 Spray_pathsBASE.out 5578 Nov 13 2013 09:15:50 14784 Results.xlsm 29323 Nov 13 2013 15:00:46 13234 vm32mod2D.inp 3551 Jan 05 2009 10:09:26 30336 vm32mod2D.vrt 624 Nov 05 2013 09:55:59 17780 vm38mod2D.inp 2458 Jan 07 2009 11:28:06 51869 vm38mod2D.vrt 650 Nov 05 2013 09:56:31 36343 C.5 References C.1. AREVA Document 38-9200149-001, (DCPP Unit 2 DIT-50540188-04-00), "DCPP Unit 2 Pressurizer Nozzle NDE Data."

C.2. ANSYS Finite Element Computer Code, Version 14.0, ANSYS Inc., Canonsburg, PA Page 28 to the Enclosure contains Proprietary Information-Withhold Under 10 CFR 2.390 Attachment 3 PG&E Letter DCL-14-084 AREVA Affidavit for AREVA Calculations Attachment 1 to the Enclosure contains Proprietary Information When separated from Attachment 1, this document is decontrolled.

AFFIDAVIT COMMONWEALTH OF VIRGINIA )

) ss.

CITY OF LYNCHBURG )

1. My name is Gayle F. Elliott. I am Manager, Product Licensing, for AREVA Inc. (AREVA) and as such I am authorized to execute this Affidavit.

2. I am familiar with the criteria applied by AREVA to determine whether certain AREVA information is proprietary. I am familiar with the policies established by AREVA to ensure the proper application of these criteria.

3. I am familiar with the AREVA information contained in the Calculation 11 Summary Sheets (CSS) Document Nos. 32-9049114-005, entitled, Diablo Canyon Unit 2 Pressurizer Safety/Relief Nozzle Weld Overlay Structural Analysis," 32-9049112-005, entitled, "Diablo Canyon Unit 2- Pressurizer Spray Nozzle Weld Overlay Structural Analysis," 32-9049062-006, entitled, "Diablo Canyon Unit 2 Pressurizer Safety/Relief Nozzle Weld Overlay Residual Stress Analysis," 32-9049061-007, entitled, "Diablo Canyon Unit 2 Pressurizer Spray Nozzle Weld Overlay Residual Stress Analysis," 32-9215965-004, entitled, "Diablo Canyon l)nit 2 Pressurizer Safety/Relief Nozzles Laminar/Planar Flaw Analysis," 32-9213780-004, entitled, "Diablo Canyon Unit 2 Pressurizer Spray Nozzle Laminar Flaw Analysis," each dated September 2014 and referred to herein as ~~Documents." Information contained in these Documents has been classified by AREVA as proprietary in accordance with the policies established by AREVA for the control and protection of proprietary and confidential information.

4. These Documents contain information of a proprietary and confidential nature and is of the type customarily held in confidence by AREVA and not made available to the

public. Based on my experience, I am aware that other companies regard information of the kind contained in these Documents as proprietary and confidential.

5. These Documents have been made available to the U.S. Nuclear Regulatory Commission in confidence with the request that the information contained in these Documents 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 AREVA to determine whether information should be classified as proprietary:

(a) The information reveals details of AREVA's 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 AREVA.

(d) The information reveals certain distinguishing aspects of a process, methodology, or component, the exclusive use of which provides a competitive advantage for AREVA in product optimization or marketability.

(e) The information is vital to a competitive advantage held by AREVA, would be helpful to competitors to AREVA, and would likely cause substantial harm to the competitive position of AREVA.

The information in these Documents is considered proprietary for the reasons set forth in paragraphs 6(c), 6(d) and 6(e) above.

7. In accordance with AREVA's policies governing the protection and control of information, proprietary information contained in these Documents has been made available, on a limited basis, to others outside AREVA only as required and under suitable agreement providing for nondisclosure and limited use of the information.

8. AREVA 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.

SUBSCRIBED before me this lrt:h dayof S-eflr~ ,2014.

Sherry L. McFaden NOTARY PUBLIC, COMMONWEALTH OF VIRGINIA MY COMMISSION EXPIRES: 10/31/14 Reg. # 7079129

Attachment 1 to the Enclosure contains Proprietary Information -

Withhold Under 10 CFR 2.390 Attachment 4 PG&E Letter DCL-14-084 Westinghouse Letter No. CAW-14-4031: Application for Withholding Proprietary Information from Public Disclosure I

Attachment 1 to the Enclosure contains Proprietary Information When separated from Attachment 1, this document is decontrolled .

@ Westinghouse Westinghouse Electric Company Engineering, Equipment and Major Projects 1000 Westinghouse Drive, Building 3 Cranberry Township, Pennsylvania 16066 USA U.S. Nuclear Regulatory Commission Direct tel: (412) 374-4643 Document Control Desk Direct fax: (724) 940-8560 11555 Rockville Pike e-mail: greshaja@westinghouse.com Rockville, MD 20852 Proj letter: PGE-14-90, Rev. 1 CAW-14-4031 September 12, 20 14 APPLICATION FOR WITHHOLDING PROPRIETARY INFORMATION FROM PUBLIC DISCLOSURE

Subject:

LTR-RC-14-41, Rev. 1, "Identification of Westinghouse Proprietary Information in Selected Pages of AREVA Calculation Summary Sheets" (Proprietary)

The proprietary information for which withholding is being requested in the above-referenced report is further identified in Affidavit CAW-14-4031 signed by the owner of the proprietary information, Westinghouse Electric Company LLC. The Affidavit, which accompanies this letter, sets forth the basis on which the information may be withheld from public disclosure by the Commission and addresses with specificity the considerations listed in paragraph (b)(4) of 10 CFR Section 2.390 of the Commission's regulations.

The subject document was prepared and classified as Westinghouse, Proprietary Class 2. Westinghouse requests that the document be considered proprietary in its entirety. As such, a non-proprietary version will not be issued.

Accordingly, this letter authorizes the utilization of the accompanying Affidavit by Pacific Gas and Electric.

Correspondence with respect to the proprietary aspects of the ~pplication for withholding or the Westinghouse Affidavit should reference CAW-14-4031, and should be addressed to James A. Gresham, Manager, Regulatory Compliance, Westinghouse Electric Company, 1000 Westinghouse Drive, Building 3 Suite 310, Cranberry Township, Pennsylvania 16066.

Very truly yours,

~~~

cJ;:es A. Gresham, Manager Regulatory Compliance Enclosures

CAW-14-4031 AFFIDAVIT COMMONWEALTH OF PENNSYLVANIA:

ss COUNTY OF BUTLER:

Before me, the undersigned authority, personally appeared James A. Gresham, who, being by me duly sworn according to law, deposes and says that he is authorized to execute this Affidavit on behalf of Westinghouse Electric Company LLC (Westinghouse), and that the averments of fact set forth in this Affidavit are true and correct to the best of his knowledge, information, and belief:

Regulatory Compliance Sworn to and subscribed before me this 12th day of September 2014 a~~ ~/O.Jit)

Notary Public COMMONWEALTH OF PENNSYLVANIA NOTARIAL SEAL Anne M. Stegman, Notary Public North Huntingdon Twp., Westmoreland County My Commission Expires Aug. 7, 2016 MEMBER, PENNSYLVANIA ASSOCIATION OF NOTARIES

2 CAW-14-4031 (1) I am Manager, Regulatory Compliance, Westinghouse Electric Company LLC (Westinghouse),

and as such, I have been specifically delegated the function of reviewing the proprietary information sought to be withheld from public disclosure in connection with nuclear power plant licensing and rule making proceedings, and am authorized to apply for its withholding on behalf of Westinghouse.

(2) I am making this Affidavit in conformance with the provisions of 10 CFR Section 2.390 of the Commission's regulatio~s and in conjunction with the Westinghouse Application for Withholding Proprietary Information from Public Disclosure accompanying this Affidavit.

(3) I have personal knowledge of the criteria and procedures utilized by Westinghouse in designating information as a trade secret, privileged or as confidential commercial or financial information.

(4) Pursuant to the provisions of paragraph (b)(4) of Section 2.390 of the Commission's regulations, the following is furnished for consideration by the Commission in determining whether the information sought to be withheld from public disclosure should be withheld.

(i) The information sought to be withheld from public disclosure is owned and has been held in confidence by Westinghouse.

(ii) The information is of a type customarily held in confidence by Westinghouse and not customarily disclosed to the public. Westinghouse has a rational basis for determining the types of information customarily held in confidence by it and, in that connection, utilizes a system to determine when and whether to hold certain types of information in confidence. The application of that system and the substance of that system constitute Westinghouse policy and provide the rational basis required.

Under that system, information is held in confidence if it falls in one or more of several types, the release of which might result in the loss of an existing or potential competitive advantage, as follows:

(a) The information reveals the distinguishing aspects of a process (or component, structure, tool, method, etc.) where prevention of its use by any of

3 CAW-14-4031 Westinghouse's competitors without license from Westinghouse constitutes a competitive economic advantage over other companies.

(b) It consists of supporting data, including test data, relative to a process (or component, structure, tool, method, etc.), the application of which data secures a competitive economic advantage, e.g., by optimization or improved marketability.

(c) Its use by a competitor would reduce his expenditure of resources or improve his competitive position in the design, manufacture, shipment, installation, assurance of quality, or licensing a similar product.

(d) It reveals cost or price information, production capacities, budget levels, or commercial strategies of Westinghouse, its customers or suppliers.

(e) It reveals aspects of past, present, or future Westinghouse or customer funded development plans and programs of potential commercial value to Westinghouse.

(f) It contains patentable ideas, for which patent protection may be desirable.

(iii) There are sound policy reasons behind the Westinghouse system which include the following:

(a) The use of such information by Westinghouse gives Westinghouse a competitive advantage over its competitors. It is, therefore, withheld from disclosure to protect the Westinghouse competitive position.

(b) It is information that is marketable in many ways. The extent to which such information is available to competitors diminishes the Westinghouse ability to sell products and services involving the use of the information.

(c) Use by our competitor would put Westinghouse at a competitive disadvantage by reducing his expenditure of resources at our expense.

4 CAW-14-4031 (d) Each component of proprietary information pertinent to a particular competitive advantage is potentially as valuable as the total competitive advantage. If competitors acquire components of proprietary information, any one component may be the key to the entire puzzle, thereby depriving Westinghouse of a competitive advantage.

(e) Unrestricted disclosure would jeopardize the position of prominence of Westinghouse in the world market, and thereby give a market advantage to the competition of those countries.

(f) The Westinghouse capacity to invest corporate assets in research and development depends upon the success in obtaining and maintaining a competitive advantage ..

(iv) The information is being transmitted to the Commission in confidence and, under the provisions of 10 CFR Section 2.390, it is to be received in confidence by the Commission.

(v) The information sought to be protected is not available in public sources or available information has not been previously employed in the same original manner or method to the best of our knowledge and belief.

(vi) The proprietary information sought to be withheld in this submittal is that which is appropriately marked in LTR-RC-14-41, Rev. 1, "Identification of Westinghouse Proprietary Information in Selected Pages of AREVA.Calculation Summary Sheets" (Proprietary), for submittal to the Commission, being transmitted by Pacific Gas and Electric letter and Application for Withholding Proprietary Information from Public Disclosure, to the Document Control Desk. The proprietary information as submitted by Westinghouse is that associated with Pacific Gas and Electric's request for an ASME Section XI inservice inspection relief request for alternative, SWOL REP-1 U2 for Diablo Canyon Unit 2, and may be used only for that purpose.

5 CA W-14-4031 (a) This information is part of that which will enable Westinghouse to:

(i) Obtain NRC review and approval of an ASME Section XI Inservice Inspection Relief Request for Alternative, SWOL-REP-1 U2 for Diablo Canyon Unit 2.

(b) Further this information has substantial commercial value as follows:

(i) Westinghouse plans to sell the use of similar information to its customers for the purpose of supporting similar structural weld overlay (SWOL) repair efforts for the pressurizer safety/relief nozzle at other plants.

(ii) The information requested to be withheld reveals the distinguishing aspects of safety/relief nozzle design dimensions, inputs and analysis results that were developed by Westinghouse.

Public disclosure of this proprietary information is likely to cause substantial harm to the competitive position of Westinghouse because it would enhance the ability of competitors to provide similar SWOL services and licensing defense services for commercial power reactors without commensurate expenses. Also, public disclosure of the information would enable others to use the information to meet NRC requirements for licensing documentation without purchasing the right to use the information.

The development of the technology described in part by the information is the result of applying the results of many years of experience in an intensive Westinghouse effort and the expenditure of a considerable sum of money.

In order for competitors of Westinghouse to duplicate this information, similar technical programs would have to be performed and a significant manpower effort, having the requisite talent and experience, would have to be expended.

Further the deponent sayeth not.

PROPRIETARY INFORMATION NOTICE Transmitted herewith are proprietary and non-proprietary versions of documents furnished to the NRC associated with Pacific Gas and Electric's request for an ASME Section XI inservice inspection relief request for alternative, SWOL REP-1 for Diablo Canyon Unit 2, and may be used only for that purpose.

In order to conform to the requirements of 10 CFR 2.390 of the Commission's regulations concerning the protection of proprietary information so submitted to the NRC, the information which is proprietary in the proprietary versions is contained within brackets, and where the proprietary information has been deleted in the non-proprietary versions, only the brackets remain (the information that was contained within the brackets in the proprietary versions having been deleted). The justification for claiming the information so designated as proprietary is indicated in both versions by means of lower case letters (a) through (f) located as a superscript immediately following the brackets enclosing each item of information being identified as proprietary or in the margin opposite such information. These lower case letters refer to the types of information Westinghouse customarily holds in confidence identified in Sections (4)(ii)(a) through (4 )(ii)(f) of the Affidavit accompanying this transmittal pursuant to 10 CFR 2.390(b )( 1).

COPYRIGHT NOTICE The reports transmitted herewith each bear a Westinghouse copyright notice. The NRC is permitted to make the number of copies of the information contained in these reports which are necessary for its internal use in connection with generic and plant-specific reviews and approvals as well as the issuance, denial, amendment, transfer, renewal, modification, suspension, revocation, or violation of a license, permit, order, or regulation subject to the requirements of 10 CFR 2.390 regarding restrictions on public disclosure to the extent such information has been identified as proprietary by Westinghouse, copyright protection notwithstanding. With respect to the non-proprietary versions of these reports, the NRC is permitted to make the number of copies beyond those necessary for its internal use which are necessary in order to have one copy available for public viewing in the appropriate docket files in the public document room in Washington, DC and in local public document rooms as may be required by NRC regulations if the number of copies submitted is insufficient for this purpose. Copies made by the NRC must include the copyright notice in all instances and the proprietary notice if the original was identified as proprietary.

Pacific Gas and Electric Letter for Transmittal to the NRC The following paragraphs should be included in your letter to the NRC Document Control Desk:

Enclosed are:

1. One (1) copy ofLTR-RC-14-41, Revision I, "Identification ofWestinghouse Proprietary Information in Selected Pages of AREVA Calculation Summary Sheets" (Proprietary)

Also enclosed is the Westinghouse Application for Withholding Proprietary Information from Public Disclosure CAW-14-4031, accompanying Affidavit, Proprietary Information Notice, and Copyright Notice. .

The subject document was prepared and classified as Westinghouse Proprietary Class 2. Westinghouse requests that the document be considered proprietary in its entirety. As such, a non-proprietary version will not be issued.

As Item 1 contains information proprietary to Westinghouse Electric Company LLC, it is supported by an Affidavit signed by Westinghouse, the owner of the information. The Affidavit sets forth the basis on which the information may be withheld from public disclosure by the Commission and addresses with specificity the considerations listed in paragraph (b)(4) of Section 2.3 90 of the Commission's regulations.

Accordingly, it is respectfully requested that the information which is proprietary to Westinghouse be withheld from public disclosure in accordance with 10 CFR Section 2.390 ofthe Commission's regulations.

Correspondence with respect to the copyright or proprietary aspects of the items listed above or the supporting Westinghouse Affidavit should reference CAW-14-4031 and should be addressed to James A. Gresham, Manager, Regulatory Compliance, Westinghouse Electric Company, 1000 Westinghouse Drive, Building 3 Suite 310, Cranberry Township, Pennsylvania 16066.

Attachment 1 to the Enclosure conta ins Proprietary Information-Withhold Under 10 CFR 2.390 Attachment 5 PG&E Letter DCL-14-084 Safety Nozzles A, 8 and C and Spray Nozzle:

Data from Field Measurements (Nonproprietary)

Attachment 1 to the Enclosure conta ins Proprietary Information When separated from Attachment 1, this document is decontrolled.

Unit-2 Pressurizer Nozzle

-Field Measurement Data-The following table contains field measurement data taken at various periods prior to weld-overlay (WOL). As such not all data has been measured, such as circumferences. In these cases design drawings are referred to as needed.

As Built Diameter (inch) I Thickness (inch)

Nozzle DMW Safe End Pipe Safety A (WIB-369) 8.04 I 1.05 8.00 I 1.10 Unk I 1.2 6.69 I 0.70 Safety B (WIB-423) 7.92 I 1.10 7.88 I 1.23 Unk I 1.18 6.69 I 0.719*

Safety C (WIB-359) 7.99 I 1.1 Unk I 1.14 Unk I 1.2 6.69 I 0.68 Spray (WIB-345 6.05 I 0.80 Unkl 0.8 Unkl 0.7 4.54 I 0.438*

Nominal pipe thickness based on pipe specifications.

Unk: Unknown 1

DCL-14-084, Relief Request SWOL-REP-1-U2: Submittal of Revised Areva Calculations. Part 7 of 15

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