ML18299A117
| ML18299A117 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 10/12/2018 |
| From: | Wang K Framatome |
| To: | Florida Power & Light Co, Office of Nuclear Reactor Regulation |
| References | |
| L-2018-174 32-9280712, Rev 002 | |
| Download: ML18299A117 (33) | |
Text
WITHHELD FROM PUBLIC DISCLOSURE UNDER 10 CFR 2.390 Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 FPL Response to NRC RAI No. 4.3.3-5 L-2018-174Attachment 16 Enclosure 3 Page 1 of28 Framatome Calculation No. 32-9280712, Rev. 002, TP CRDM Lower Joint Environmentally Assisted Fatigue dated October 12, 2018 (Non-Proprietary)
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 Withheld From Public Disdosure Under 10 CFR 2.390 L-2018-174 Attachment 16 Endosure 3 0402-01-F01 (Rev. 021, 03/1~~ff28 framatome CALCULATION
SUMMARY
SHEET (CSS)
Document No.
32 9280712 002
....... ----~-...;.;~--------
Safety Related: 181Yes D No Title TP CRDM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary PURPOSE AND
SUMMARY
OF RESULTS:
Purpose The purpose of this calculation is to determine the effects of EAF (environmental assisted fatigue) on the Lower Joint.
Revision 001: update fatigue usage (Uen) calculation by formula from the NUREG/CR-6909 Rev. 1 Draft Report to the NUREG/CR-6909 Rev. 1 Final Report (Reference [1]). The proprietary version is 32-9280202-002.
Revision 002: determine a bounding fatigue usage (Uen) on the CRDM Lower Joint for both units (Units 3 and 4 ).
The proprietary version is 32-9280202-003.
Results The results indicate that the Lower Joint fatigue remains acceptable when the Environmental Assisted Fatigue is considered. The calculated EAF usage factor including the environmental assisted fatigue is 0.415 for Unit 3 and 0.539 for Unit 4, [
]
Revision 001: Results above are updated. The report has 26 pages in its entirety, numbering 1 to 23, A-1 toA-3.
Revision 002: Results in Rev. 001 remain unchanged. The bounding Uen for both units is 0.597. The report has 27 I pages in its entirety, numbering 1 to 24, A-1 to A-3.
If the computer software used herein is not the latest version per the EASI list, AP 0402-01 requires that justification be provided.
THE FOLLOWING COMPUTER CODES HAVE BEEN USED IN THIS DOCUMENT:
CODENERSION/REV CODENERSION/REV None THE DOCUMENT CONTAINS ASSUMPTIONS THAT SHALL BE VERIRED PRIOR TO USE DYes
~ No Page 1 of27
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174 Attachment 16 Enclosure 3 Page 3 of28 framatome 0402-01-F01 (Rev. 02\\ 03/-12i2018)
Document No. 32-9280712-002 i°'P CROM LowElr Joint Envlron_rnentally As~isted Fatigue....:.Non-Proprietary Review Meth9d: ~
Design Review (Detailed Check)
D Alt~rnate Cidculation Does this: 9oc:ument esiabli$}:i design o~ technical reqtiirements?
DYES [ZJ NO Do~s this qo¢mpeilt ¢dritain Gustom~t Reqiiired Format?
DYES
~NO Signature Block Name and T.itle (printed or typed)
Signature P/R/A/M
.'~nd LP/LR Date Pages/~ections Prepared/Reviewed/Approved.
l{aihong Wang Advisory Engineer p
f0/12/18 All HT Hanison Advisory Engineer David Cofflin Man~ger A
No(es: PIRfA deslgnates Preparer (P); Revie~er (R), Appr9ver (A);
LPiLR designate:s.Lead Ptepiir"'r (LP), Lea~ Reviewer (LR);
M designates Mentor (M)
All Iµ preparing, reviewing and approving revisiol)S, the lead preparer/reviewer/approver shall use 'All' or 'All except
_* in t~e pages/sections reviewed/approved. 'All' or 'All except_. _' means that the changes and the effec:t of the 9hanges on* the. entire doc;ument have been prepared/reviewed/apprC>ved. I_t does not mean that the. lea.cl preparer/reviewer/approver has prepared/reviewed/approved ali the pages of the document.
With ApprQver permissio11~ cafoulations rriay be revised without using: the latest css form. This* deviation is permitted when expediency and/or. cost are a factor. Approver shall add a c*omment in the tight.,.iriost column that acknowledges and justifies this deviation.
Pr9j¢ct Manager Approval of Customer References and/or Customer Formatting (NIA if*
not applicable)
Name Titl_e (printed or typed).
(printed or typed)
Signature Pate Comments NIA NIA NIA NIA
- NIA Page2
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174 Attachment 16 Enclosure 3 Page 4 of 28 framatome 0402-01-F01 (Rev. 021, 03/12/2018)
Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary Record of Revision Revision Pages/Sections/Paragraphs No.
Changed Brief Description / Change Authorization 000 All Original Issue. The proprietary version of this document is 32-9280202-001.
001 Pages 1-3, all headers The proprietary version of this document is 32-9280202-002.
Updated with Rev. 21 of 0402-FOI.
Added Rev. 002 purpose and updated results on CSS page.
Changed AREY A to Framatome on all headers.
All Editorial changes throughout, e.g., "Fen,nom" to Fen," "T"' to "T°," "O "' to "O *."
Pages 7-8/Sections 2.0, 2.1 and Deleted "DRAFT" before "NUREG/CR-6909."
2.2 Corrected "Eqs. (2), (3) or (4)" in item (4) to "equations listed in Section 2.2."
Changed "Equation (68)" to "Equation (56)."
Updated formula for parameter E*.
Updated "(A.12)" to "(A.13)."
Page 8/Section 6.1 Deleted "Transient 16" and revised the note on next page.
Page 13/Section 6.2 Updated formula for parameter t'.
Page IS/Section 6.2 Re-calculated t' and updated Table 6-2.
Page 17/Section 6.2 Re-calculated t' and updated Table 6-4.
Page 18/Section 6.2 Updated Fen values for transient pairs 1-7, 1-10, 1-11 and 1-5.
Removed Fen calculation for Transient 16.
Page 19/Section 6.2 Removed Transient 16 from Table 6-6.
Page 20/Section 6.2 Re-calculated Den in Table 6-7 for Unit 3.
Page 21/Section 6.2 Re-calculated Den in Table 6-8 for Unit 4 and updated Note (4).
Page 23/Section 8.0 Updated Ref. [1] and company name for Refs. [3], [4], [6] and [7].
002 Pages 1-3 Updated to Rev. 002. The proprietary version of this document is 32-9280202-003.
Page 22/Section 6.2 Added calculation of a bounding Den for both units (Table 6-9).
Page 23/Section 7.0 Updated to include the bounding fatigue usage (last sentence).
Page 3
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatome Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174 Attachment 16 Enclosure 3 Page 5 of28 Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary Table of Contents Page SIGNATURE BLOCK................................................................................................................................ 2 RECORD OF REVISION.......................................................................................................................... 3 LIST OF TABLES..................................................................................................................................... 5 LIST OF FIGURES................................................................................................................................... 6 1.0 OBJECTIVE.................................................................................................................................. 7 2.0 METHODOLOGY.......................................................................................................................... 7 2.1 General Approach to Calculating the Fen and Usage Factor............................................................. ?
2.2 Detailed Method of Calculation of the Fen for Lower Joint................................................................. 7 3.0 ASSUMPTIONS............................................................................................................................ 8 4.0 DESIGN INPUTS.......................................................................................................................... 8 5.0 COMPUTER USAGE.................................................................................................................... 8 6.0 CALCULATIONS........................................................................................................................... 8 6.1 Transients To Be Evaluated.............................................................................................................. 8 6.2 EXCEL Spreadsheet Calculations.................................................................................................. 11 7.0 RES UL TS.................................................................................................................................... 23
8.0 REFERENCES
............................................................................................................................ 24 APPENDIX A: BASIS FOR PRINCIPAL STRESS CALCULATIONS................................................. A-1 Page4
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatome Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-17 4 Attachment 16 Enclosure 3 Page 6_of28 Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary List of Tables Page Table 6-1: Input Data and Stress Difference Calculation for Transients 1 and 7................................... 14 Table 6-2: Calculation of Various Intermediate Parameters Needed to Determine Fen for Transients 1 and 7................................................................................................................ 15 Table 6-3: Input Data and Stress Difference Calculation for Transients 1 O and 11............................... 16 Table 6-4: Calculation of Various Intermediate Parameters Needed to Determine Fen for Table 6-5 Table 6-6 Table 6-7 Table 6-8 Table 6-9 Transients 1 O and 11............................................................................................................ 17
]................................................................................... 19
]................................................................................... 19
]............................................................................................................ 20
]............................................................................................................ 21
].................................................................................................... 22 Page 5
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatome Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174Attachment 16 Enclosure 3 Page 7 of28 Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary List of Figures Page Figure 6-1 Time History Stresses for Transient 1..................................................................................... 9 Figure 6-2 Time History Stresses for Transient 7................................................................................... 10 Figure 6-3 Time History Stresses for Transient 1 O................................................................................. 1 O Figure 6-4 Time History Stresses for Transient 11................................................................................. 11 Figure6-5 [
].................................................................................................. 19 Page 6
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatome Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-17 4 Attachment 16 Enclosure 3 Page 8 of 28 Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary 1.0 OBJECTIVE The component to be qualified for EAF (environmental assisted fatigue) in this calculation is the CRDM Lower Joint. Only the inside wetted location is to be considered. A fatigue usage factor is to be calculated considering the EAF and the objective is to obtain a value that is less than 1.0.
2.0 METHODOLOGY Calculations are performed based on the criteria below, which is based on NUREG/CR-6909, Reference [1]. The applicable code is ASME III, 1989 edition with no Addenda Reference [2].
2.1 General Approach to Calculating the Fen and Usage Factor Time-history stresses are provided for various transients in Reference [4]. From this information, the following procedure is used to calculate the Fen and resulting EAF usage factor.
(1) Calculate the stress range between time point n-1 and n on the component stresses according to NB-3216.2. The stress ranges are cr'ij=CJ(n)ij - cr<n-l)ij* The principal stresses (cr1, cr2, cr3) are then calculated based on the stress ranges cr';j, and arranged such that cr1 ~ cr2 ~ cr3. The stress intensity (SI) range is then CJin1 = cr, - CJ3 (2) Calculate the strain range by Lisn = CJini / E, where E is the Young's modulus of the material at the average metal temperature between the two time points.
(3) Calculate the strain rate by s' n = Li Sul Litn, where Litn in second is the time increment between point n-1 andn.
( 4) Determine whether or not the Fen for step n shall be calculated. Since only the strain increment of increasingly tensile strain is considered (i.e., no negatives' is permitted), the following methodology is adopted to determine if the strain range shall be kept:
Ifl cr31 :SI crd, the Fen for step n shall be calculated based on the strain rate (Step 3) and other applicable parameters (S*, T* and O* ) according to equations listed in Section 2.2; If lcr3 I > lcr1 I, the strain range is excluded in the next step, and no Fen is calculated.
(5) Calculate the Fen factor between the two extreme time points of pair number k using the "Multi-Linear Strain Based Method" Fen approach presented in Reference [l].
LFeni/!,.Ei F
en,k -
- E11ei Equation (56) of Reference [l].
(6) Calculate the overall EAFen usage factor for the location: Den= Fen,,Ul + Fen,2U2 + Fen,3U3 + * * *.
2.2 Detailed Method of Calculation of the Fen for Lower Joint Detailed description of the Fen calculation applicable to the Lower Joint:
Page 7
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174 Attachment 16 Enclosure 3 Page 9 of28 framatome Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary 3.0 ASSUMPTIONS
[
1 4.0 DESIGN INPUTS The plant design, past and projected operating information was provided in Reference [3], Reference [4] and Reference [7].
5.0 COMPUTER USAGE EXCEL spreadsheet only.
6.0 CALCULATIONS Calculations are performed based on the methodology of Reference [1].
Based on the information provided in Reference [4], the total usage factor associated with various transients including consideration of dynamic seismic events was calculated to be [
] The stress time-histories are also provided in a table in this same calculation and are displayed in the following plot. [
1 6.1 Transients To Be Evaluated The following transients were considered to be included in the calculation of the EAF usage factor for this component.
Page 8
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatome Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174 Attachment 16 Enclosure 3 Page 10 of 28 Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary
[
]
The following plots show the time history loading of the transients involved. The decreases in stresses in these plots will generally correspond to the times of negative strain shown later in Tables 6-2 and 6-4.
Figure 6-1 Time History Stresses for Transient 1 Page 9
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174 Attachment 16 Enclosure 3 Page 11 of28 framatome Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary Figure 6-2 Time History Stresses for Transient 7 Figure 6-3 Time History Stresses for Transient 10 Page 10
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 ftamatome Withheld From Public Disclosure Under 10 CFR 2.390 L-2018-17 4 Attachment 16 Enclosure 3 Page 12 of 28 Document No. 32-9280712-002 TP CROM Lower Joint Environm.entally Assisted Fatigue - Non-Proprietary Figure 6-4 Time History Stresses for Transient 11 6.2 EXCEL Spreadsheet Calculations The calculations necessary to perform this evaluation were done with EXCEL. The following is an explanation of the equations used in the spreadsheet.
For Sheet: "Lower Joint" Page 11
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatome Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174 Attachment 16 Enclosure 3 Page 13 of28 Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary Page 12
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatome Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174 Attachment 16 Enclosure 3 Page 14 of 28 Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary Page 13
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251
- fram*atome Withheld From Public Disclosure Under 1 O CFR 2.390 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary L-2018-174 Attachment 16 Enclosure 3 Page 15 of 28 Document No. 32-9280712-002 Table 6-1: Input Data and Stress Difference Calculation for Transients 1 and 7 Page 14
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatome Withheld From Public Disclosure Under 10 CFR 2.390 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary L-2018-174 Attachment 16 Enclosure 3 Page 16 of 28 Document No. 32-9280712-002 Table 6-2: Calculation of Various Intermediate Parameters Needed to Determine Fen for Transients 1 and 7 Page 15
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatome Withheid From Public Disclosure Under 1 O CFR 2.390 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary L-2018-174 Attachment 16 Enclosure 3 Page 17 of 28 Document No. 32-9280712-002 Table 6-3: Input Data and Stress Difference Calculation for Transients 10 and 11 r
Page 16
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatome Withheld From Public Disclosure Under 10 CFR 2.390 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary L-2018-174 Attachment 16 Enclosure 3 Page 18 of28 Document No. 32-9280712-002 Table 6-4: Calculation of Various Intermediate Parameters Needed to Determine Fen for Transients 10 and 11 Page 17
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatome Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-17 4 Attachment 16 Enclosure 3 Page 19 of 28 Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary Based on the above calculations for Lisn and Fen
- LiSn, the usage factor can be recalculated to account for the EAF.
For Transients 1 and 7,
_ L F en,;.6E; _
[
Fen -
.LLlE;
]
For Transients 1 and 10,
_ L F en,i.6E; _
[
Fen -
.LLlE;
]
For Transients 1 and 11, F
L F en,i.6E; = [
en=
_LL\\.E;
]
[
] This will be used for the Transient 1 and 5 combination.
The following Tables 6-5 and 6-6 show the calculation of cycles of transients available [
]
Page 18
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatome Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-17 4 Attachment 16 Enclosure 3 Page 20 of28 Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary Figure 6-5 [
1 Table 6-5 [
1 (1) Reference [3], (2) Reference [7].
Table 6-6 [
1 (1) Reference [3], (2) Reference [7{
Page 19
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251
,framatome Table 6-7 [
Notes:
Withheld From Public Disclosure Under 1 O CFR 2.390 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary (1) The EAF Usage Factors above were calculated with the Fatigue Design Curve from Reference [1], Table A.2.
(2) Per Section 2.1, the overall EAF0n usage factor for the location is: Den= Fen, 1Ul + F 0n,2U2 + F0n,3U3 + * * *.
(3) [
l (4) [
l L-2018-174 Attachment 16 Enclosure 3 Page 21 of 28 Document No. 32-9280712-002 l~F Usage Factor Total U
(2) _
en l
0.415 Page 20
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251
- framatome, Table 6-8 [
Notes:
Withheld From Public Disclosure Under 1 O CFR 2.390 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary (1) The EAF Usage Factors above were calculated with the Fatigue Design Curve from Reference [1], Table A.2.
(2) Per Section 2.1, the overall EAF00 usage factor for the location is: U 00 = F0m1Ul + F00,2U2 + F0n,3U3 + * * *.
(3) [
]
(4) [
]
L-2018-174 Attachment 16 Enclosure 3 Page 22 of 28 Document No. 32-9280712-002 Im Usage Factor Total U
(2) _
en
]
I 0.539 I Page 21
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174 Attachment 16 Enclosure 3 Page 23 of 28
'framatome:
Document No. 32-9280712-002 TP CRDM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary A bounding fatigue usage factor may be determined for both units, by taking into account the cumulative usage calculations in Tables 6-7 and 6-8 such that:
- 1) All transient pairs in the two tables are considered, and
- 2) For the same transient pair, the higher number of cycles (between the values from Unit 3 and Unit 4) is selected as the entry to the cumulative fatigue usage calculation.
Based on this approach, the bounding U.11 is calculated as presented in Table 6-9.
Table 6-9 [
]
Im Usage Factor Total Uen=
I I 0.5971 The bounding number of HU cycles based on Tables 6-5 and 6-6 is [
]. The approach above yields the actual number of HU cycles used in the fatigue usage calculation to be [
] more than the bounding number from Tables 6-5 and 6-6. It is conservative and acceptable, considering the number [
] still within the [
]
Page 22
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatc>me Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174Attachment 16 Enclosure 3 Page 24 of 28 Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary 7.0 RESULTS Per Tables 6-7 and 6-8, the EAF usage factors have been recalculated and shown to be less than 1.0 [
However removing this conservatism provides a more accurate and realistic usage factor as presented in these calculations. A bounding EAF usage factor is calculated as presented in Table 6-9, which is less than 1.0.
]
Page 23
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 framatome Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174 Attachment 16 Enclosure 3 Page 25 of28 Document No. 32-9280712-002
. TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary
8.0 REFERENCES
- 1.
NUREG/CR-6909, Revision 1, "Effect ofLWR Water Environments on the Fatigue Life of Reactor Materials", Final Report, May 2018.
- 2.
ASME B&PV Code Sec. III, Subsection 1989 edition with no Addenda.
- 3.
Framatome Document 38-9279661-000, [NNPARV-17-0241, NNPARV-17-0243], "Formal Transmittal of inputs for Areva Evaluation of Environmentally Assisted Fatigue at Turkey Point Units 3 and 4".
- 4.
Framatome Document 38-9279681-000, JSPM Document 17NI0548, Rev. B, "Turkey Point Power Plant
- Data for the fatigue analysis of the criticals points of latch housing and canopy joint".
- 5.
Textbook, "Advanced Strength and Applied Elasticity The SI Version", A.C. Ugural, S.K. Fenster, 1982, Elsevier Science Publishing Co.
- 6.
Framatome Document 33-9127371-001, "Turkey Point Plant Extended Power Uprate Control Rod Drive Mechanism Pressure Housing Assembly Appurtenances ASME Class l ".
- 7.
Framatome Document 3 8-9280092-000, [NNP AR V-17-0268], "Formal Transmittal of input for Areva Evaluation of Environmentally Assisted Fatigue at Turkey Point Units 3 and 4".
Page 24
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174 Attachment 16 Enclosure 3 Page 26 of28 framatome Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary APPENDIX A:
BASIS FOR PRINCIPAL STRESS CALCULATIONS A.1 Equations for Principal Stress Calculations The source equations from the text, "Advanced Strength and Applied Elasticity The SI Version", [5] are shown here for documentation purposes.
Advanced Strength and Applied Elasticity T*he SI Version A.C. Ugural Fairleigh Dickinstm Uru\\'fflity S. K. Fenster New Jersey lnslitute of Tecboolog)'
Elst'\\'ief Scleni;,: f'lltillshlni Cil., f.'oc.
- ii Vimteit.Jlt A>11:n~. New Yi.'d.. NP* Yad DiEl~{IJ'& <r.Jlsid.! 1M Unill!d St&s 11nd Cmiadl.:
El?-GVicr s.;.au;c Puhl.uh= B.\\'.
P.O. 2Jl, 10CQAEAlm:crdam.1b:Nellu:r~
Cl l!lll ! by Ehe-.ier Science N:tllfhlnil Co.,. Inc, S.mmd Priming, l9S'l Uffilt)' of Consrss O!mlnR &l f\\tbll(:t[jon DIS!ll Ugun!, J\\.C.
M,11noof !.Ul!a1c,1h mi:! ~
clmtku}o: TI!c: $1 \\"fflilQQ, I=xh:&il bibli~c.al rt:f~s 3J1d ~
l, S~ m~: 2, Ela..<lkloi, J. fmuter, SWJJ K., i 933-jnir.t l.Wm<<'. 11, 111le.
TMM.U41 19$1 6in.l'l2 80-26638 ISBN 0444-<t:)428-?
t:Nsk F.diit1r toum Qd11bro Sd::reiber Dt!~gn ~
Pm:mm
.~rt EdJtOT 03.!s !kimi; Cu,~, D~flg11 Paul Agul11 Desisn Pniductioo M4'11lJW 1~ Jtty c~ Sci~ 'l)J>>p:iphm, lac.
Pihtrt-" Hlldd:.tn C'ntfum,m Page A-1
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174Attachment 16 Enclosure 3 Page 27 of 28 framatome Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary Appendix B A Practical Approach to the Stress Cubic Equation and Direction Cosines B.1 Principal Stresses There are many methods in common usage for solving a cubic equation. A simple approach for dealing with Eq. (1.20) is to find one root, say u1, by plotting it (a as abscissa) or by trial and error. The cubic equation is then factored by dividing by (o-P-a1) to arrive at a quadratic equation. The remainlng roots can be obtained by applying the familiar general solution of a quadratic equation. This process requires considerable time and algebraic work, however.
What follows is a practical approach for determining the roots of stress cubic equation (1.20):
(a) where*
11 """'O'x +a,.+o.
12 = UxO'y + u;,ru. + ay<Jz -'f';y -T}z-T;z (B.l) 1-:,, = O'xO'yO'z + 2'Txy'1j.,z'rxz -a.:c-'T;.-~YT}z-az'1']y According to the method, expressions that provide direct m.eans for solving both two-dimensional and three-dimensional stress problems are*
aa=2S[ cos(a/3)] +}11 ab= 2S{ cos[ ( a./3) + 120°]} +} / 1 uc=2S{cos[(a/3)+240°]} +f/1 (B.2)
- ~ E. E. MessaJ, Finding true maximum shear stress, Machine Design pp. 166-169 (December 7, 1978)..
PageA-2
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 Withheld From Public Disclosure Under 1 O CFR 2.390 L-2018-174Attachment 16 Enclosure 3 Page 28 of28 framatome Document No. 32-9280712-002 TP CROM Lower Joint Environmentally Assisted Fatigue - Non-Proprietary 408 A Practical Approach to the Stress Cubic Equation and Direction Cosines Here the constants are given by S=(}R)112 a=cos-1(- 2~)
R=flf-I2 (B.3)
Q-: }l1l2-l3-i1If T= (i1R3)1/2 and invariants 11, 12, and /3 are represented in. terms of the given stress components by Eqs. (B.1).
The principal stresses found from Eqs. (B.2) are redesignated using numerical subscripts so that a1><1i>~. The above procedure is well adapted to a pocket calculator or digital computer.
PageA-3
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 FPL Response to NRC RAI No. 4.7.4-1 L-2018-17 4 Attachment 17 Page 1 of 3 NRC RAI Letter Nos. ML18269A209 and ML18269A210 dated October 1, 2018
- 6. Leak-Before-Break Analysis for Class 1 Auxiliary Piping, TLAA 4.7.4, Regulatory Basis:
Section 54.21 (c) of 10 CFR requires an applicant to demonstrate that the effects of aging for structures and components will be adequately managed so that the intended function(s) will be maintained consistent with the current licensing basis for the subsequent period of extended operation. One of the findings that the staff must make to issue a renewed license (10 CFR 54.29(a)) is that actions have been identified and have been or will be taken with respect to the managing the effects of aging during the subsequent period of extended operation on the functionality of structures and components that have been identified to require review under 10 CFR 54.21, such that there is reasonable assurance that the activities authorized by the subsequent renewed license will continue to be conducted in accordance with the current licensing basis (CLB). As described in SRP-SLR, an applicant may demonstrate compliance with 10 CFR 54.21 (a)(3) by referencing the applicable aging management programs and activities in the GALL-SLR Report. In order to complete its review and enable making a finding under 10 CFR 54.29(a), the staff finds that additional information is necessary in regard to the matters described below.
Background:
The regulation in 10 CFR 54.21 (c)(1 )(ii) states that, for a specific time limited aging analyses (TLAA) that is dispositioned in accordance with this regulation, the applicant must demonstrate that the analysis has been projected to the end of the subsequent period of extended operation (SPEO). Subsequent license renewal application (SLRA)
Section 4.7.4, Leak-Before-Break Analysis for Class 1 Auxiliary Piping, identifies the LBB analysis in the current licensing basis as a TLAA for the SLRA. The fatigue crack growth calculation is part of the TLAA.
In September 2017, the applicant updated the leak-before-break (LBB) analysis for the Class 1 auxiliary piping to address the operation during the SPEO as documented in Structural Integrity Associates (SIA) Engineering Report No. 0901350.401, Revision 3, "Leak-Before-Break Evaluation - Accumulator, Pressurizer Surge, and Residual Heat Removal Lines, Turkey Point Units 3 and 4," 2017.
As part of the LBB analysis, the applicant also submitted SIA Engineering Report No.
0901350.304, Revision 2, "Fatigue Crack Growth Evaluation," September 18, 2017.
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 FPL Response to NRC RAI No. 4.7.4-1 L-2018-17 4 Attachment 17 Page 2 of 3 RAI 4.7.4-1 Issue:
In 2009, the applicant performed a LBS analysis of the reactor coolant syste_m auxiliary piping as part of the extended power uprate (EPU) application as documented in SIA Engineering Report No. 0901350.401, Revision 0, "Leak-Before-Break Evaluation -
Accumulator, Pressurizer Surge, and Residual Heat Removal Lines, Turkey Point Units 3 and 4," April 2010.
As discussed above, in September 2017, the applicant updated the LBB analysis for the reactor coolant system auxiliary lines to address operation during the SPEO as documented in SIA Engineering Report No. 0901350.401, Revision 3.
Based on the NRC record, it appears that the applicant's LBS analysis for the Class 1 auxiliary lines has not been submitted prior to the submission of the SLRA.
Request:
If the LBS analysis for the Class 1 auxiliary piping has not been submitted for NRC review and approval prior to the SLRA, discuss which time period the LBS application is requested for NRC approval, i.e., (1) 60-year operating license, (2) 80-year operating license, or (c) both a and b.
FPL Response:
During performance of the TLAA and exemption request review performed for PTN subsequent license renewal, the EPU license amendment (Ref. 1) was noted to have a reference to an auxiliary line leak-before-break (LBB) analysis in Section 2.1.6.2.1, page 2.1.6-4 of the submittal. Although there was no mention of this analysis in the NRC EPU SER (Ref. 2), the analysis was conservatively noted as a TLAA and included as such in the PTN SLRA.
Based on discussions with the NRC staff, the analysis was never submitted nor reviewed and approved by NRC. Accordingly, FPL is requesting NRC review and approval of the auxiliary line LBB analysis as part of the PTN SLRA for the 80-year operating license.
References:
- 1. FPL Letter No. L-2010-113 from Michael Kiley to U.S. Nuclear Regulatory Commission, "Turkey Point Units 3 and 4, Docket Nos. 50-250 and 50-251, License Amendment Request for Extended Power Uprate (LAR 205)," October 21, 2010, (ML103560169).
- 2. Jason C. Paige (NRC) letter to Mano Nazar (FPL), "Turkey Point Units 3 and 4 -
Issuance of Amendments Regarding Extended Power Uprate," June 15, 2012 (ML11293A365).
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 FPL Response to NRC RAI No. 4.7.4-1 L-2018-17 4 Attachment 17 Page 3 of 3 Associated SLRA Revisions:
The SLRA is amended as indicated by the following text deletion (strikethrough) and text addition (red underlined font) revisions:
SLRA Section 4.7.4 is revised as follows:
4.7.4 Leak-Before-Break Analysis for Class 1 Auxiliary Piping TLAA Description A leak-before-break analysis of the Class 1 auxiliary lines was performed as part of the extended power uprate (EPU) (Reference 4.7.7.8) demonstrating acceptable results for the current 60-year period of operation.
Considering the LBB postulated crack stability analysis is related to the period of plant operation, the LBB analysis is a TLM. However, this analysis was never submitted to the NRC for review and approval.
SLRA Section 17.3.7.4 is revised as follows:
17.3. 7.4 Leak-Before-Break Class 1 Auxiliary Piping An LBB analysis of the Class 1 auxiliary lines was performed for the EPU during the initial PEO, and it is valid for the current 60 year period of operation. Since the The LBB analysis for Class 1 auxiliary lines depends on the potential that a postulated crack would grow to unstable proportions during the plant life, whlGH thus the analysis is dependent on the length of plant operation.! Since, the LBB analysis for Class 1 auxiliary lines for 80 years was submitted to the NRC for review and approval as part of the SLRA, this analysis is a TLAA.
To demonstrate continued compliance during the SPEO, the analyses analysis associated with Class 1 auxiliary line LBB were reevaluated was performed by Structural Integrity Associates for 80 years. Since the Class 1 auxiliary piping has been projected to the end of the SPEO, this TLAA is dispositioned in accordance with 10 CFR 54.21 (c)(1 )(ii).
Associated
Enclosures:
None
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 FPL Response to NRC RAI No. 4.7.4-2 L-2018-174 Attachment 18 Page 1 of 1 NRC RAI Letter Nos. ML18269A209 and ML18269A210 dated October 1, 2018 RAI 4.7.4-2 Issue:
Section 17.3.7.4 of SLRA Appendix A (UFSAR supplement) summarizes the LBS analyses of Class 1 auxiliary piping and stated that "... An LBS analysis of the Class 1 auxiliary lines was performed for the EPU, during the initial PEO, and it is valid for the current 60-year period of operation... " Based on the NRC's record, it appears that the NRC has not received the licensee's LBS analysis for the Class 1 auxiliary lines for the 40-year license period or 60-year license renewal period.
Request:
Justify the statement in Section 17.3.7.4 of SLRA Appendix A that the LBS analysis of the Class 1 auxiliary lines is valid for the current 60-year period of operation.
FPL Response:
As noted in the response to RAI 4.7.4-1, the LBS analysis for Class 1 auxiliary lines was never submitted nor reviewed and approved by NRC. Accordingly, the statement in SLRA Section 17.3.7.4 requires correction and is included in the associated SLRA revisions provided in the FPL response to RAI 4.7.4-1.
References:
None Associated SLRA Revisions:
None Associated
Enclosures:
None
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 FPL Response to NRC RAI No. 4.7.4-3 L-2018-17 4 Attachment 19 Page 1 of 1 NRC RAI Letter Nos. ML18269A209 and ML18269A210 dated October 1, 2018 RAI 4.7.4-3 Issue:
The bottom of every page of SIA Report No. 0901350.304, Revision 2, is marked with a proprietary statement that reads: "Contains Vendor Proprietary Information". Many proprietary information in SIA Report No. 0901350.304, Revision 2, appear in SIA Report No. 0901350.401, Revision 3, which has no proprietary marking.
Request:
Clarify whether the information in SIA Report No. 0901350.401, Revision 3 that is associated with SIA Report No. 0901350.304, Revision 2 is or is not proprietary. Clarify the discrepancy in the proprietary classification between these two reports.
FPL Response:
Proprietary references in SIA Report No. 0901350.304, Revision 2 have been replaced with non-proprietary references and the report has been revised. Hence, SIA Report No.
0901350.401, Revision 4 does not include proprietary information and is included as to this RAI response.
References:
None Associated SLRA Revisions:
The SLRA is amended as indicated by the following text deletion (strikethrough) and text addition (red underlined font) revisions:
Revise SLRA reference 4.7.7.8 and add reference 4.7.7.18 as follows:
6.7.7.8 Structural Integrity Associates Engineering Report No. 0901350.401, Revision ~. "Leak-Before-Break Evaluation - Accumulator, Pressurizer Surge, and Residual Heat Removal Lines, Turkey Point Units 3 and 4,"
September 20170ctober 121 2018 (Enclosure 4, Attachment 12).
4.7.7.18 Structural Integrity Associates Engineering Report No. 0901350.304.
Revision 31 "Fatigue Crack Growth Evaluation". October 12. 2018.
Associated
Enclosures:
. Structural Integrity Associates Engineering Report No. 0901350.304, Revision 3, "Fatigue Crack Growth Evaluation," October 12, 2018. Structural Integrity Associates Engineering Report No. 0901350.401,
Revision 4, "Leak-Before-Break Evaluation - Accumulator, Pressurizer Surge, and Residual Heat Removal Lines, Turkey Point Units 3 and 4," October 12, 2018