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{{#Wiki_filter:ENCLOSURE 6 WEC Non-Proprietary Document LTR-SGDA-12-36, Flow-Induced Vibration and Tube Wear Analysis of the San Onofre Nuclear Generating Station Unit 2 Replacement Steam Generators Supporting Restart (Non-Proprietary)
{{#Wiki_filter:ENCLOSURE 6 WEC Non-Proprietary Document LTR-SGDA-12-36, Flow-Induced Vibration and Tube Wear Analysis of the San Onofre Nuclear Generating Station Unit 2 Replacement Steam Generators Supporting Restart (Non-Proprietary)
Westinghouse Non-Proprietary Class 3 Page 1 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 LTR-SGDA-12-36, Revision 3 Flow-Induced Vibration and Tube Wear Analysis of the San Onofre Nuclear Generating Station Unit 2 Replacement Steam Generators Supporting Restart Supplie Statu sStamp~.181 4-AA086-M0238 I ýI'N/A NCE DCUKY-OML4TONL ouv fltP KWU MANUAL MPS MAY PROCUWD l3Y OO AW STATUS -A d" rie Iku *dIWV doaainmf OWd It cpmI muIm~g~in *dv -pii dm i r~eli &W , o :Idm 0u! OWmt~ Do AW sUNWT~ of d~Wr -.idW4**id 10, NOT AFPPROE -CaMu mid .mNeir~o mis. ?SrM i~rWe.0mw February 15, 2013 J. M. Hall B. A. Bell W. K. Cullen T. L. Norman R J. Prabhu T. J. Pournaras J. G. Thakkar P. J. Langford Reviewed by: D. P. Siska SCE DE
 
Westinghouse Non-Proprietary Class 3 Page 1 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 LTR-SGDA-12-36, Revision 3 Flow-Induced Vibration and Tube Wear Analysis of the San Onofre Nuclear Generating Station Unit 2 Replacement Steam Generators Supporting Restart February 15, 2013 Supplie Statu sStamp
  ~.181 4-AA086-M0238                          I          &#
Additional analysis was performed to determine the potential for in-plane motion associated with fluid-elastic instability in any of the remaining active tubes. This is documented in Section 8.1 and Section 7.3.4 of this report. Through analysis of the available eddy current data, it was determined that there were no indications of in-plane motion in any of the tubes. This also included the tubes with tube-to-tube wear as discussed earlier. This conclusion was made by reviewing the wear scars at the AVB support locations and determining that there was no wear outside the location where the tube was supported by the AVB. This is a clear indication that in-plane motion was not occurring; else there would be indications of rubbing/wear at locations not covered by the AVB. Since the SGs will operate at reduced power levels during the next period of operation, and any potential for wear is reduced at lower power levels, the likelihood of any in-plane motion is greatly reduced. As an order of magnitude, calculations indicate that a reduction from 100% power to 70% power will reduce the in-plane stability ratios by about one-half the values calculated at 100% power conditions.
Additional analysis was performed to determine the potential for in-plane motion associated with fluid-elastic instability in any of the remaining active tubes. This is documented in Section 8.1 and Section 7.3.4 of this report. Through analysis of the available eddy current data, it was determined that there were no indications of in-plane motion in any of the tubes. This also included the tubes with tube-to-tube wear as discussed earlier. This conclusion was made by reviewing the wear scars at the AVB support locations and determining that there was no wear outside the location where the tube was supported by the AVB. This is a clear indication that in-plane motion was not occurring; else there would be indications of rubbing/wear at locations not covered by the AVB. Since the SGs will operate at reduced power levels during the next period of operation, and any potential for wear is reduced at lower power levels, the likelihood of any in-plane motion is greatly reduced. As an order of magnitude, calculations indicate that a reduction from 100% power to 70% power will reduce the in-plane stability ratios by about one-half the values calculated at 100% power conditions.
As a result of the above, it was concluded that significant tube-to-tube wear would not be projected to occur during the next cycle of operation of Unit 2.2.4 Modification of Plugging Criteria Considering Unit 3 Data The Unit 3 eddy current data was reviewed to determine if any additional information could be obtained that would allow definition of a more conservative approach that could be used to justify the remaining active tubes in the Unit 2 steam generators.
As a result of the above, it was concluded that significant tube-to-tube wear would not be projected to occur during the next cycle of operation of Unit 2.
As a result of this process the following criteria were developed:
2.4     Modification of Plugging Criteria Considering Unit 3 Data The Unit 3 eddy current data was reviewed to determine if any additional information could be obtained that would allow definition of a more conservative approach that could be used to justify the remaining active tubes in the Unit 2 steam generators. As a result of this process the following criteria were developed:
Criterion 1 -Free span tube-to-tube contact/wear Criterion 2 -Wear outside AVB sites Criterion 3 -Ineffective AVB sites and in-plane motion Criterion 4 -Wear at top TSP in combination with wear at multiple AVBs Criterion 5 -Ineffective AVBs and OP wear potential Specific details describing the above criteria can be found in Section 9.0 of this report. With the exception of Criterion 4, the application of the above criteria for the Unit 2 tubes did not result in additional tubes recommended for plugging.
Criterion 1- Free span tube-to-tube contact/wear Criterion 2- Wear outside AVB sites Criterion 3- Ineffective AVB sites and in-plane motion Criterion 4- Wear at top TSP in combination with wear at multiple AVBs Criterion 5- Ineffective AVBs and OP wear potential Specific details describing the above criteria can be found in Section 9.0 of this report. With the exception of Criterion 4, the application of the above criteria for the Unit 2 tubes did not result in additional tubes recommended for plugging. However, application of the more conservative criteria resulted in the identification of additional tubes that would be recommended for plugging at various power levels. Table 2-1 provides a summary of the tubes.
However, application of the more conservative criteria resulted in the identification of additional tubes that would be recommended for plugging at various power levels. Table 2-1 provides a summary of the tubes.1814-AA086-M0238, REV. 0 Page 16 of 415 Page 16 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 2.5 Summary and Recommendations Analysis has shown that the wear observed at the AVB locations in the SONGS Unit 2 steam generators were produced as a result of out-of-plane motion associated with the gap-limited ER mechanism.
1814-AA086-M0238, REV. 0                         Page 16 of 415
There were no indications of in-plane instability, even for the tubes found with tube-to-tube wear. All tube wear at AVB locations was found to be consistent with an out-of-plane mechanism.
 
The wear analysis indicates that SCE can operate the SONGS Unit 2 steam generators without significant additional tube wear at power levels of at least 80% at the current plugging level. The analysis has determined that no tubes were found to be unstable in the in-plane direction.
Page 16 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 2.5     Summary and Recommendations Analysis has shown that the wear observed at the AVB locations in the SONGS Unit 2 steam generators were produced as a result of out-of-plane motion associated with the gap-limited ER mechanism. There were no indications of in-plane instability, even for the tubes found with tube-to-tube wear. All tube wear at AVB locations was found to be consistent with an out-of-plane mechanism.
The gap-limited displacement ER mechanism will cause some of the tubes to experience additional wear over the next period of operation.
The wear analysis indicates that SCE can operate the SONGS Unit 2 steam generators without significant additional tube wear at power levels of at least 80% at the current plugging level. The analysis has determined that no tubes were found to be unstable in the in-plane direction. The gap-limited displacement ER mechanism will cause some of the tubes to experience additional wear over the next period of operation. However, the amount of wear associated with that mechanism would be manageable over that period of time with maximum additional wear on both active and plugged tubes expected to be less than 1.5 mils. Note that operation of the steam generators with wear produced by this mechanism is not uncommon in Westinghouse steam generators as long as the amount of wear that could occur during operation is small (most often less than the ECT detection threshold).
However, the amount of wear associated with that mechanism would be manageable over that period of time with maximum additional wear on both active and plugged tubes expected to be less than 1.5 mils. Note that operation of the steam generators with wear produced by this mechanism is not uncommon in Westinghouse steam generators as long as the amount of wear that could occur during operation is small (most often less than the ECT detection threshold).
The amount of wear that has been experienced at the SONGS Unit 2 SGs during the prior operating cycle is larger than what would normally be considered acceptable. As a result, certain actions have been taken by SCE to reduce the likelihood of a tube leakage event. This includes plugging and stabilizing certain tubes with large wear scars, including tubes with little or no wear in the affected zone.
The amount of wear that has been experienced at the SONGS Unit 2 SGs during the prior operating cycle is larger than what would normally be considered acceptable.
Westinghouse also recommends plugging up to 15 additional tubes as described in Table 2-1 as a preventive measure. In addition to these actions, Westinghouse recommends that SCE operate the SONGS Unit 2 SGs at a 70% power level for the next 6 month period. However, additional analysis was also performed tht demonstrated acceptable operation for at least 18 months.
As a result, certain actions have been taken by SCE to reduce the likelihood of a tube leakage event. This includes plugging and stabilizing certain tubes with large wear scars, including tubes with little or no wear in the affected zone.Westinghouse also recommends plugging up to 15 additional tubes as described in Table 2-1 as a preventive measure. In addition to these actions, Westinghouse recommends that SCE operate the SONGS Unit 2 SGs at a 70% power level for the next 6 month period. However, additional analysis was also performed tht demonstrated acceptable operation for at least 18 months.1814-AA086-M0238, REV. 0 Page 17 of 415 Page 17 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 2-1 Tube Plugging Recommendation Steam Generator 2E088 Steam Generator 2E089 80% Power 70% Power 80% Power 70% Power Row Column Row Column Row Column Row Column 113 81 135 93 80 68 80 68 134 88 137 89 103 97 104 72 135 91 104 72 132 94 135 93 116 96 137 89 120 96 126 78 132 94 134 88 134 92 138 90 1814-AA086-M0238, REV. 0 Page 18 of 415 Page 18 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 3.0 ATHOS Analysis An ATHOS model of the SONGS Unit 2, MHI SG Model 116TT-1, RSGs was developed to provide thermal-hydraulic (TH) parameters using the Westinghouse version of the ATHOS code. The Westinghouse version of the ATHOS code has modifications and upgrades described in Appendix B of Reference 3-1 and is the methodology used by Westinghouse for designing RSGs and SGs for new plants. The model is used to compute the three-dimensional (3-D) thermal-hydraulic parameters:
1814-AA086-M0238, REV. 0                       Page 17 of 415
void fractions, quality, densities, and gap velocities for all tubes in the tube bundle. These parameters are used for flow-induced vibration (FIV) and wear evaluations of the Unit 2 RSGs to support the operational assessment and restart efforts.a,b,c,e 3.1 Analysis Methods The thermal-hydraulic analysis of the SONGS Unit 2 RSGs is performed using the ATHOS (Analysis of the Thermal Hydraulics of Steam Generators) code. ATHOS is a three-dimensional computational fluid dynamics (CFD) code for analyzing steam generator (SG) thermal-hydraulic performance characteristics (Reference 3-5). Westinghouse used the current version of the code, ATHOS60, Version 3.0, referred to as ATHOS in this report (References 3-6 through 3-8).ATHOS analysis of a SG involves the execution of a suite of codes consisting of the pre-processors ATHOGPP and PLATES, the ATHOS solver, and the post-processor VGUB. A brief overview of these codes follows.3.1.1 Description of Computer Codes ATHOGPP The pre-processor, ATHOGPP, calculates the geometric parameters required for the ATHOS thermal-hydraulic analysis.
 
For each node the code computes:
Page 17 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 2-1 Tube Plugging Recommendation Steam Generator 2E088             Steam Generator 2E089 80% Power       70% Power         80% Power             70% Power Row     Column   Row Column       Row     Column       Row Column 113     81       135     93       80       68         80     68 134     88       137     89       103       97         104     72 135     91                       104       72         132     94 135     93                       116       96 137     89                       120     96 126       78 132     94 134     88 134     92 138     90 1814-AA086-M0238, REV. 0             Page 18 of 415
the secondary fluid volume, the flow areas in the R, 0, and Z directions, the heat transfer and friction surface areas, the approach to device area ratios required to compute pressure drops through concentrated resistances (flow distribution and tube support plates, primary separator entrance, etc.), and the primary fluid flow partitioning factor. The input parameters include: grid distribution in R, 0, and Z directions, shell and shroud (wrapper)dimensions, tube layout and individual tube dimensions as well as the location (row and column numbers) of plugged tubes, inlet (feedwater) and primary separator locations and dimensions, as well as the location of all internal devices (tube support plates, stay-cylinders, etc.). Geometry data processed by ATHOGPP are then transferred via a binary file (TAPE20) to the PLATES code for further refinement of the flow areas through the tube support plates.a,c,e 1814-AA086-M0238, REV. 0 Page 19 of 415 Page 19 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,c,e PLATES[]a,c,e ATHOS The ATHOS code module solves the governing conservation equations in conjunction with empirical correlations and boundary conditions.
 
a,c,e[a,b,c,e VGUB The post-processor, VGUB, calculates tube gap velocity, density, and void fraction distributions along the steam generator tubes. These data are used in tube vibration and wear analyses.
Page 18 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 3.0   ATHOS Analysis An ATHOS model of the SONGS Unit 2, MHI SG Model 116TT-1, RSGs was developed to provide thermal-hydraulic (TH) parameters using the Westinghouse version of the ATHOS code. The Westinghouse version of the ATHOS code has modifications and upgrades described in Appendix B of Reference 3-1 and is the methodology used by Westinghouse for designing RSGs and SGs for new plants. The model is used to compute the three-dimensional (3-D) thermal-hydraulic parameters: void fractions, quality, densities, and gap velocities for all tubes in the tube bundle. These parameters are used for flow-induced vibration (FIV) and wear evaluations of the Unit 2 RSGs to support the operational assessment and restart efforts.
Local tube gap 1814-AA086-M0238, REV. 0 Page 20 of 415 Page 20 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 velocities are calculated from ATHOS cell velocities which are based on the porous media concept. In general, gap velocity components normal to the tube (cross flow) are used in flow-induced vibration and wear analyses since these components produce significantly greater tube vibration than components parallel to the tube (axial flow).a,c,e 3.1.2 Discussion of Significant Assumptions
a,b,c,e 3.1   Analysis Methods The thermal-hydraulic analysis of the SONGS Unit 2 RSGs is performed using the ATHOS (Analysis of the Thermal Hydraulics of Steam Generators) code. ATHOS is a three-dimensional computational fluid dynamics (CFD) code for analyzing steam generator (SG) thermal-hydraulic performance characteristics (Reference 3-5). Westinghouse used the current version of the code, ATHOS60, Version 3.0, referred to as ATHOS in this report (References 3-6 through 3-8).
: 1. Thermal-hydraulic conditions for ATHOS calculations are based on operating conditions specified in Reference 3-4.2. []a,c.e 3.[I a,c,e 4. [5.6.a,b,c,e a,b,c,e I a,c,e 1814-AA086-M0238, REV. 0 Page 21 of 415 Page 21 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 7.8.Ia,b,c,e I a,c,e 3.1.3 Acceptance Criteria The ATHOS code calculations are acceptable if all of the following criteria are satisfied (References 3-5 and 3-16). Note that if a criterion cannot be satisfied then sufficient justification is required.1. b,c,e 2.a,b,c,e 3. [I a,b,c,e 4.[Ia,b,c,e 3.1.4 Input Steam Generator Geometry The ATHOS model covers the secondary side flow field inside the steam generator shell from the top surface of the tubesheet to the lower deck plate and from the center of the wrapper-to-wrapper wall and the downcomer annulus between the wrapper and the shell walls. The finite difference grid is based on the cylindrical coordinate system. Design geometry and thermal-hydraulic symmetry is assumed with respect to the diametrical plane perpendicular to the tube lane. Because of this assumption, the analysis model consists of one-half of the steam generator, i.e., an 180'-sector encompassing one-half of the hot leg side and one-half of the cold leg side.a,c,e The ATHOS Geometry pre-processor also included the following inputs: 1. General Geometrical Input Data 2. Grid Specification Data 1814-AA086-M0238, REV. 0 Page 22 of 415 Page 22 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 3. Inlet/Outlet Port Data 4. Shell and Shroud (Wrapper)
ATHOS analysis of a SG involves the execution of a suite of codes consisting of the pre-processors ATHOGPP and PLATES, the ATHOS solver, and the post-processor VGUB. A brief overview of these codes follows.
Data 5. Vertical Divider Plate and Impingement Plate Data 6. Separator Deck Data 7. Distribution Plate Data 8. Tube Support Plate and Baffle (Wrapper)
3.1.1   Descriptionof Computer Codes ATHOGPP The pre-processor, ATHOGPP, calculates the geometric parameters required for the ATHOS thermal-hydraulic analysis. For each node the code computes: the secondary fluid volume, the flow areas in the R, 0, and Z directions, the heat transfer and friction surface areas, the approach to device area ratios required to compute pressure drops through concentrated resistances (flow distribution and tube support plates, primary separator entrance, etc.), and the primary fluid flow partitioning factor. The input parameters include: grid distribution in R, 0, and Z directions, shell and shroud (wrapper) dimensions, tube layout and individual tube dimensions as well as the location (row and column numbers) of plugged tubes, inlet (feedwater) and primary separator locations and dimensions, as well as the location of all internal devices (tube support plates, stay-cylinders, etc.). Geometry data processed by ATHOGPP are then transferred via a binary file (TAPE20) to the PLATES code for further refinement of the flow areas through the tube support plates.
Data -Horizontal
a,c,e 1814-AA086-M0238, REV. 0                       Page 19 of 415
: 9. Tube Support Plate and Baffle (Wrapper)
 
Data -Vertical 10. Tube Bundle Data 11. Primary Separator Lower Deck Plate Flow Areas 12. Anti-Vibration Bar (AVB) Data 13. Tube Plugging Data a,b,c,e ATHOS Thermal-Hydraulic Module ATHOS inputs were prepared for the operating conditions specified in Reference 3-4.a,b,c,e 1814-AA086-M0238, REV. 0 Page 23 of 415 Page 23 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c,e 1814-AA086-M0238, REV. 0 Page 24 of 415 Page 24 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-1 SONGS Units 2 and 3 RSGs: R-0 Finite Difference Grid IX Circumferential Grid Radial Grid (YV) at Radial Grid (YV)(XU) IY Tubesheet at Lower Deck a (Degrees) (inches) (inches)b,c,e I *4 4. 4-I -I
Page 19 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,c,e PLATES
* 4-4 4
[
* I.-4 4
                                                                              ]a,c,e ATHOS The ATHOS code module solves the governing conservation equations in conjunction with empirical correlations and boundary conditions.
* 4-4 4
a,c,e
* I-4 4 4. 4.4 4 4. 4.I 4 4. I-__ _____ I __ I _____ _____-~ I & I 1814-AA086-M0238, REV. 0 Page 25 of 415 Page 25 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-2 SONGS Units 2 and 3 RSGs: Axial Direction (Z) Finite Difference Grid a,u,c,e 1814-AA086-M0238, REV. 0 Page 26 of 415 Page 26 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-3 SONGS Unit 2 RSG 2E088 Tube Plugging List (Reference 3-3) a,b,e 1814-AA086-M0238, REV. 0 Page 27 of 415 Page 27 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-4 SONGS Unit 2 RSG 2E089 Tube Plugging List (Reference 3-3) a,b,e 1814-AA086-M0238, REV. 0 Page 28 of 415 Page 28 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-5 SONGS Unit 2 RSGs: Basic Operating Parameters (References 3-1 and 3-4)Parameter Value a,.... )b,e t I
[
* I-* * -1814-AA086-M0238, REV. 0 Page 29 of 415 Page 29 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c,e Figure 3-1 SONGS Units 2 and 3 RSGs: ATHOS Finite Difference Grid in the Horizontal (R-e) Plane 1814-AA086-M0238, REV. 0 Page 30 of 415 Page 30 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,bc,e Figure 3-2 SONGS Units 2 and 3 RSGs: ATHOS Finite Difference Grid in the Vertical (R-0) Plane 1814-AA086-M0238, REV. 0 Page 31 of 415 Page 31 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 3.2 Power Levels The ATHOS family of codes, consisting of the pre-processors ATHOGPP and PLATES, the ATHOS thermal-hydraulic module, and the post-processor VGUB, were executed to determine the thermal-hydraulic characteristics of the SONGS Unit 2 RSGs for the operating conditions specified in Reference 3-4. [a,b,c,e 3.3 Results Summary Ia,b,c,e 1814-AA086-M0238, REV. 0 Page 32 of 415 Page 32 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c,e Local Flow Conditions along Tubes VGUB (Reference 3-15) calculates the local flow conditions for all tubes in the bundle for input to the tube vibration and wear analysis to support the operational assessment of the Unit 2 RSGs. Local tube gap velocities are calculated from ATHOS cell velocities based on the cell porosity and the characteristic geometry of the tube array (pitch and diameter).
a,b,c,e VGUB The post-processor, VGUB, calculates tube gap velocity, density, and void fraction distributions along the steam generator tubes. These data are used in tube vibration and wear analyses. Local tube gap 1814-AA086-M0238, REV. 0                   Page 20 of 415
Output from VGUB is written to a binary 1814-AA086-M0238, REV. 0 Page 33 of 415 Page 33 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 file (TAPE7) which contains local flow conditions for all tubes in the bundle. TAPE7 binary file is used for tube vibration and wear evaluations.
 
a,b,c,e 1814-AA086-M0238, REV. 0 Page 34 of 415 Page 34 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-6 Summary of ATHOS Convergence Parameters a,b,c I I, I Ii£0 0~iE~ii'.jII~'Iii ai~i'p 0iii£I 2'in I-jI~2 3 1814-AA086-M0238, REV. 0 Page 35 of 415 Page 35 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-7 Summary of ATHOS Convergence Parameters at 100% Power (Reference 3-1)Parameter Target Initial Run Restart 1 Restart 2 Comment Values b,c 1 1814-AA086-M0238, REV. 0 Page 36 of 415 Page 36 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-S Summary of ATHOS Results ji 1814-AA086-M0238, REV. 0 Page 37 of 415 Page 37 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-3 SONGS RSG 2E089 Tube Row 141/Col. 89: Comparison of Gap Velocities at 50% Power 1814-AA086-M0238, REV. 0 Page 38 of 415 Page 38 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-4 SONGS RSG 2E089 Tube Row 141/Col. 89: Comparison of Gap Velocities at 60% Power 1814-AA086-M0238, REV. 0 Page 39 of 415 Page 39 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-5 SONGS RSG 2E088 Tube Row 141/Col. 89: Comparison of Gap Velocities at 70% Power 1814-AA086-M0238, REV. 0 Page 40 of 415 Page 40 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-6 SONGS RSG 2E089 Tube Row 1411Col. 89: Comparison of Gap Velocities at 70% Power 1814-AA086-M0238, REV. 0 Page 41 of 415 Page 41 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-7 SONGS RSG 2E089 Tube Row 141/Co1. 89: Comparison of Gap Velocities at 80% Power 1814-AA086-M0238, REV. 0 Page 42 of 415 Page 42 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-8 SONGS RSG89 High Column ATHOS Results of Velocity, Void and Quality at 50% Power 1814-AA086-M0238, REV. 0 Page 43 of 415 Page 43 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-9 SONGS RSG89 High Column ATHOS Results of Velocity, Void and Quality at 60% Power 1814-AA086-M0238, REV. 0 Page 44 of 415 Page 44 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 abc Figure 3-10 SONGS RSG89 High Column ATHOS Results of Velocity, Void and Quality at 70% Power 1814-AA086-M0238, REV. 0 Page 45 of 415 Page 45 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 abc Figure 3-11 SONGS RSG89 High Column ATHOS Results of Velocity, Void and Quality at 80% Power 1814-AA086-M0238, REV. 0 Page 46 of 415 Page 46 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 3.4 Unit 3 Operating Conditions In this section, the ATHOS analysis of the Unit 3 RSGs at the representative operating conditions, from Reference 3-17, for the February 2011 through January 2012 operating period is compared with the ATHOS analysis documented in Section 3.3. These additional evaluations were performed and documented in Reference 3-18 to demonstrate the applicability of Westinghouse methodology to the more severe conditions observed in Unit 3.a,b,c,e 1814-AA086-M0238, REV. 0 Page 47 of 415 Page 47 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,bc,e Local Flow Conditions alona Tubes[Ia,b,c,e 1814-AA086-M0238, REV. 0 Page 48 of 415 Page 48 of 414 LTR-SGDA-1 2-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-9 Unit 3 RSGs: Primary and Secondary Fluid Parameters for February 2011 through January 2012 Operating Period Paraete RS3E88RSGE89 Design Conditions Paraete RS3EB8RSGE89(Reference 3-1)a,b,c__1-I-I_4 I 4 I 1814-AA086-M0238, REV. 0 Page 49 of 415 Page 49 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-10 Summary of ATHOS Convergence Parameters Parameter Target Initial Restart I Restart 2 Comment Values Run b,c I1 I i 1814-AA086-M0238, REV. 0 Page 50 of 415 Page 50 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-11 Summary of ATHOS Results Parameter Design Condtions Operating Condtions I (Reference 3-1) Unit 3 Plant Data a,b,c t* 4.4. 4.4.4 4. 4.4. 1.4. 4.4. 4.I. I.4. 4.4. 4.U. I 1814-AA086-M0238, REV. 0 Page 51 of 415 Page 51 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-12 Secondary Quality Contours along the Plane of Symmetry (IX = 1 and 30)1814-AA086-M0238, REV. 0 Page 52 of 415 Page 52 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-13 Void Fraction Contours along the Plane of Symmetry (IX = I and 30)1814-AA086-M0238, REV. 0 Page 53 of 415 Page 53 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Figure 3-14 Secondary Fluid Velocity Contours along the Plane of Symmetry (IX = 1 and 30)1814-AA086-M0238, REV. 0 Page 54 of 415 Page 54 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-15 Secondary Fluid Quality Contours above 7 th Tube Support Plate (IZ=36)1814-AA086-M0238, REV. 0 Page 55 of 415 Page 55 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-16 Void Fraction Contours above 7 th Tube Support Plate (IZ=36)1814-AA086-M0238, REV. 0 Page 56 of 415 Page 56 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Figure 3-17 Secondary Fluid Quality Contours at the Plane of Maximum Quality (IZ=45)a,b,c 1814-AA086-M0238, REV. 0 Page 57 of 415 Page 57 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Figure 3-18 Void Fraction Contours at the Plane of Maximum Quality (IZ=45)a,b,c 1814-AA086-M0238, REV. 0 Page 58 of 415 Page 58 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c)Figure 3-19 Tube Row 141/Co1. 89: Comparison of Gap Velocities at Unit 3 and Design Conditions 1814-AA086-M0238, REV. 0 Page 59 of 415 Page 59 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-20 Tube Row 141/Col. 89: Comparison of Void Fractions at Unit 3 and Design Conditions 1814-AA086-M0238, REV. 0 Page 60 of 415 Page 60 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 abc Figure 3-21 Tube Row 141/Co1. 89: Comparison of Fluid Mixture Densities at Unit 3 and Design Conditions 1814-AA086-M0238, REV. 0 Page 61 of 415 Page 61 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 3.5 References 3-1. CN-SGMP-12-13, Revision 1, "Thermal-Hydraulic Analysis of the San Onofre Nuclear Generating Station Units 2 and 3 Replacement Steam Generators," September 2012.3-2. CN-SGMP-12-15, Revision 2, "Thermal-Hydraulic Analysis of the SONGS Unit 2 RSGs at Part Load Conditions to Support Operational Assessment," September 2012.3-3. E-mail from David Calhoun (Southern California Edison) to Daniel Merkovsky (Westinghouse),  
Page 20 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 velocities are calculated from ATHOS cell velocities which are based on the porous media concept. In general, gap velocity components normal to the tube (cross flow) are used in flow-induced vibration and wear analyses since these components produce significantly greater tube vibration than components parallel to the tube (axial flow).
a,c,e 3.1.2   Discussion of Significant Assumptions
: 1. Thermal-hydraulic conditions for ATHOS calculations are based on operating conditions specified in Reference 3-4.
: 2. [
                                                                                                              ]a,c.e 3.[
Ia,c,e
: 4. [
a,b,c,e 5.
a,b,c,e 6.
Ia,c,e 1814-AA086-M0238, REV. 0                     Page 21 of 415
 
Page 21 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 7.
Ia,b,c,e 8.
Ia,c,e 3.1.3 Acceptance Criteria The ATHOS code calculations are acceptable if all of the following criteria are satisfied (References 3-5 and 3-16). Note that if a criterion cannot be satisfied then sufficient justification is required.
: 1.                                                                                   b,c,e 2.
a,b,c,e
: 3. [
Ia,b,c,e 4.[
Ia,b,c,e 3.1.4   Input Steam Generator Geometry The ATHOS model covers the secondary side flow field inside the steam generator shell from the top surface of the tubesheet to the lower deck plate and from the center of the wrapper-to-wrapper wall and the downcomer annulus between the wrapper and the shell walls. The finite difference grid is based on the cylindrical coordinate system. Design geometry and thermal-hydraulic symmetry is assumed with respect to the diametrical plane perpendicular to the tube lane. Because of this assumption, the analysis model consists of one-half of the steam generator, i.e., an 180'-sector encompassing one-half of the hot leg side and one-half of the cold leg side.
a,c,e The ATHOS Geometry pre-processor also included the following inputs:
: 1. General Geometrical Input Data
: 2. Grid Specification Data 1814-AA086-M0238, REV. 0                       Page 22 of 415
 
Page 22 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013
: 3. Inlet/Outlet Port Data
: 4. Shell and Shroud (Wrapper) Data
: 5. Vertical Divider Plate and Impingement Plate Data
: 6. Separator Deck Data
: 7. Distribution Plate Data
: 8. Tube Support Plate and Baffle (Wrapper) Data - Horizontal
: 9. Tube Support Plate and Baffle (Wrapper) Data - Vertical
: 10. Tube Bundle Data
: 11. Primary Separator Lower Deck Plate Flow Areas
: 12. Anti-Vibration Bar (AVB) Data
: 13. Tube Plugging Data a,b,c,e ATHOS Thermal-Hydraulic Module ATHOS inputs were prepared for the operating conditions specified in Reference 3-4.
a,b,c,e 1814-AA086-M0238, REV. 0                   Page 23 of 415
 
Page 23 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c,e 1814-AA086-M0238, REV. 0 Page 24 of 415
 
Page 24 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-1 SONGS Units 2 and 3 RSGs: R-0 Finite Difference Grid IX       Circumferential Grid                   Radial Grid (YV) at             Radial Grid (YV)
(XU)               IY             Tubesheet                     at Lower Deck   a b,c,e (Degrees)                               (inches)                       (inches)
I                         *4         4.                             4-I                         -I
* 4-4                           4
* I.
              -4                         4
* 4-4                           4
* I-4                           4           4.                             4.
4                           4           4.                             4.
I                         4           4.                             I-
      -~
__
I
_____                   I I
__
                                                      &
_____
I
_____
1814-AA086-M0238, REV. 0                     Page 25 of 415
 
Page 25 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-2 SONGS Units 2 and 3 RSGs: Axial Direction (Z) Finite Difference a,u,c,e Grid 1814-AA086-M0238, REV. 0             Page 26 of 415
 
Page 26 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-3 SONGS Unit 2 RSG 2E088 Tube Plugging List (Reference 3-3)                                       a,b,e 1814-AA086-M0238, REV. 0         Page 27 of 415
 
Page 27 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-4 SONGS Unit 2 RSG 2E089 Tube Plugging List (Reference 3-3)                                       a,b,e 1814-AA086-M0238, REV. 0         Page 28 of 415
 
Page 28 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-5 SONGS Unit 2 RSGs: Basic Operating Parameters (References 3-1 and 3-4)
Parameter                                       Value                               a, b,e
                                              ....                     )
t           I
* I
                                            -         *                               * -
1814-AA086-M0238, REV. 0             Page 29 of 415
 
Page 29 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c,e Figure 3-1 SONGS Units 2 and 3 RSGs: ATHOS Finite Difference Grid in the Horizontal (R-e) Plane 1814-AA086-M0238, REV. 0             Page 30 of 415
 
Page 30 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,bc,e Figure 3-2 SONGS Units 2 and 3 RSGs: ATHOS Finite Difference Grid in the Vertical (R-0) Plane 1814-AA086-M0238, REV. 0             Page 31 of 415
 
Page 31 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 3.2 Power Levels The ATHOS family of codes, consisting of the pre-processors ATHOGPP and PLATES, the ATHOS thermal-hydraulic module, and the post-processor VGUB, were executed to determine the thermal-hydraulic characteristics of the SONGS Unit 2 RSGs for the operating conditions specified in Reference 3-4. [
a,b,c,e 3.3 Results Summary Ia,b,c,e 1814-AA086-M0238, REV. 0                     Page 32 of 415
 
Page 32 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c,e Local Flow Conditions along Tubes VGUB (Reference 3-15) calculates the local flow conditions for all tubes in the bundle for input to the tube vibration and wear analysis to support the operational assessment of the Unit 2 RSGs. Local tube gap velocities are calculated from ATHOS cell velocities based on the cell porosity and the characteristic geometry of the tube array (pitch and diameter). Output from VGUB is written to a binary 1814-AA086-M0238, REV. 0                     Page 33 of 415
 
Page 33 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 file (TAPE7) which contains local flow conditions for all tubes in the bundle. TAPE7 binary file is used for tube vibration and wear evaluations.
a,b,c,e 1814-AA086-M0238, REV. 0                       Page 34 of 415
 
Page 34 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-6 Summary of ATHOS Convergence Parameters a,b,c Ii
                      £0 0~
iE~
ii'.
jII~
I I,ai~i'Iii I      'p 0iii
                        £ I
2'in I-jI~
2 3
1814-AA086-M0238, REV. 0               Page 35 of 415
 
Page 35 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-7 Summary of ATHOS Convergence Parameters at 100% Power (Reference 3-1)
Parameter         Target   Initial Run   Restart 1   Restart 2           Comment       b,c Values 1
1814-AA086-M0238, REV. 0             Page 36 of 415
 
Page 36 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-S Summary of ATHOS Results ji 1814-AA086-M0238, REV. 0     Page 37 of 415
 
Page 37 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-3 SONGS RSG 2E089 Tube Row 141/Col. 89: Comparison of Gap Velocities at 50% Power 1814-AA086-M0238, REV. 0           Page 38 of 415
 
Page 38 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013           a,b,c Figure 3-4 SONGS RSG 2E089 Tube Row 141/Col. 89: Comparison of Gap Velocities at 60% Power 1814-AA086-M0238, REV. 0           Page 39 of 415
 
Page 39 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-5 SONGS RSG 2E088 Tube Row 141/Col. 89: Comparison of Gap Velocities at 70% Power 1814-AA086-M0238, REV. 0           Page 40 of 415
 
Page 40 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-6 SONGS RSG 2E089 Tube Row 1411Col. 89: Comparison of Gap Velocities at 70% Power 1814-AA086-M0238, REV. 0           Page 41 of 415
 
Page 41 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013         a,b,c Figure 3-7 SONGS RSG 2E089 Tube Row 141/Co1. 89: Comparison of Gap Velocities at 80% Power 1814-AA086-M0238, REV. 0           Page 42 of 415
 
Page 42 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-8 SONGS RSG89 High Column ATHOS Results of Velocity, Void and Quality at 50% Power 1814-AA086-M0238, REV. 0           Page 43 of 415
 
Page 43 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013       a,b,c Figure 3-9 SONGS RSG89 High Column ATHOS Results of Velocity, Void and Quality at 60% Power 1814-AA086-M0238, REV. 0           Page 44 of 415
 
Page 44 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013             abc Figure 3-10 SONGS RSG89 High Column ATHOS Results of Velocity, Void and Quality at 70% Power 1814-AA086-M0238, REV. 0           Page 45 of 415
 
Page 45 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013         abc Figure 3-11 SONGS RSG89 High Column ATHOS Results of Velocity, Void and Quality at 80% Power 1814-AA086-M0238, REV. 0           Page 46 of 415
 
Page 46 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 3.4     Unit 3 Operating Conditions In this section, the ATHOS analysis of the Unit 3 RSGs at the representative operating conditions, from Reference 3-17, for the February 2011 through January 2012 operating period is compared with the ATHOS analysis documented in Section 3.3. These additional evaluations were performed and documented in Reference 3-18 to demonstrate the applicability of Westinghouse methodology to the more severe conditions observed in Unit 3.
a,b,c,e 1814-AA086-M0238, REV. 0                     Page 47 of 415
 
Page 47 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,bc,e Local Flow Conditions alona Tubes
[
Ia,b,c,e 1814-AA086-M0238, REV. 0                 Page 48 of 415
 
Page 48 of 414 LTR-SGDA-1 2-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-9 Unit 3 RSGs: Primary and Secondary Fluid Parameters for February 2011 through January 2012 Operating Period ParaeteRS3E88RSGE89                              Design Conditions Paraete   RS3EB8RSGE89(Reference 3-1)                             a,b,c
__1-I-I_
4                                          I 4                                         I 1814-AA086-M0238, REV. 0             Page 49 of 415
 
Page 49 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-10 Summary of ATHOS Convergence Parameters Parameter     Target     Initial   Restart I   Restart 2           Comment       b,c Values      Run I1 I                                       i 1814-AA086-M0238, REV. 0           Page 50 of 415
 
Page 50 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Table 3-11 Summary of ATHOS Results Parameter               Design Condtions           Operating Condtions I   (Reference 3-1)           Unit 3 Plant Data a,b,c t
* 4.
: 4.                         4.
4.
4
: 4.                         4.
: 4.                         1.
: 4.                         4.
: 4.                         4.
I.                         I.
: 4.                         4.
: 4.                         4.
U.                         I 1814-AA086-M0238, REV. 0         Page 51 of 415
 
Page 51 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-12 Secondary Quality Contours along the Plane of Symmetry (IX = 1 and 30) 1814-AA086-M0238, REV. 0             Page 52 of 415
 
Page 52 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013                   a,b,c Figure 3-13 Void Fraction Contours along the Plane of Symmetry (IX = I and 30) 1814-AA086-M0238, REV. 0             Page 53 of 415
 
Page 53 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Figure 3-14 Secondary Fluid Velocity Contours along the Plane of Symmetry (IX = 1 and 30) 1814-AA086-M0238, REV. 0               Page 54 of 415
 
Page 54 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-15 Secondary Fluid Quality Contours above 7 th Tube Support Plate (IZ=36) 1814-AA086-M0238, REV. 0               Page 55 of 415
 
Page 55 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-16 Void Fraction Contours above 7 th Tube Support Plate (IZ=36) 1814-AA086-M0238, REV. 0             Page 56 of 415
 
Page 56 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-17 Secondary Fluid Quality Contours at the Plane of Maximum Quality (IZ=45) 1814-AA086-M0238, REV. 0               Page 57 of 415
 
Page 57 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 3-18 Void Fraction Contours at the Plane of Maximum Quality (IZ=45) 1814-AA086-M0238, REV. 0             Page 58 of 415
 
Page 58 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013               a,b,c
                                          )
Figure 3-19 Tube Row 141/Co1. 89: Comparison of Gap Velocities at Unit 3 and Design Conditions 1814-AA086-M0238, REV. 0               Page 59 of 415
 
Page 59 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013           a,b,c Figure 3-20 Tube Row 141/Col. 89: Comparison of Void Fractions at Unit 3 and Design Conditions 1814-AA086-M0238, REV. 0               Page 60 of 415
 
Page 60 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013             abc Figure 3-21 Tube Row 141/Co1. 89: Comparison of Fluid Mixture Densities at Unit 3 and Design Conditions 1814-AA086-M0238, REV. 0               Page 61 of 415
 
Page 61 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 3.5   References 3-1. CN-SGMP-12-13, Revision 1, "Thermal-Hydraulic Analysis of the San Onofre Nuclear Generating Station Units 2 and 3 Replacement Steam Generators," September 2012.
3-2. CN-SGMP-12-15, Revision 2, "Thermal-Hydraulic Analysis of the SONGS Unit 2 RSGs at Part Load Conditions to Support Operational Assessment," September 2012.
3-3. E-mail from David Calhoun (Southern California Edison) to Daniel Merkovsky (Westinghouse),


==Subject:==
==Subject:==
  "New SONGS Schedule Item for Westinghouse," May 22, 2012, (Included in Appendix A of Reference 3-2).3-4. MHI Report, L5-04GA567, Rev. 4, "San Onofre Nuclear Generating Station, Units 2 & 3 Replacement Steam Generators Evaluation of Stability Ratio for Return to Service," July 21, 2012.3-5. EPRI-NP-4604-CMM, "ATHOS3: A Computer Program for the Thermal-Hydraulic Analysis of Steam Generators," July 1986.3-6. LTR-SGDA-08-148, "Software Release Letter for Modules of the ATHOS Family of Codes and Executable Scripts: GPP60 Version 4.0, RUNATHOGPP Version 1.4, PLATES60 Version 3.0, and RUNPLATES Version 1.4," June 13, 2008.3-7. LTR-NCE-07-48, "Software Release Letter for ATHOS Codes and Scripts GPP60 Revision 3.0, RUNATHOGPP Version 1.3, ATHOS60 Version 3.0, and RUNATHOS Version 1.3," April 2, 2007.3-8. LTR-SGDA-05-63, "Software Release Letter for Specific ATHOS Family Codes: Software Changes Specification and Validation for Version 4.0 of Codes PLTATHOS and VGUB on HP-UX 11.0," March 24, 2005.3-9. LTR-NCE-08-1 1, Rev. 1, "User's Manual for the Newly Added Features to ATHOGPP Version 3.0 and PLATES Version 2.0 Computer Codes," February 29, 2008.3-10. WNEP-9639, Rev. 1, "Modification and Qualification of ATHOGPP Code to Simulate AVBs for ATHOS Analysis," October 20, 1996.3-11. CN-SGMP-12-12, Rev. 1, "Software Changes to ATHOGPP for Modeling of SONGS RSG Units 2 and 3 Anti-vibration Bars," June, 2012.3-12. WNEP-9640, Rev. 1, "PLATES Code User's Manual (Feedring Design Version of PLATES)," October 20, 1996.3-13. MHI Report, L5-04GA510, Rev. 5, "San Onofre Nuclear Generating Station, Units 2 & 3 Replacement Steam Generators Thermal and Hydraulic Parametric Calculations," November 12, 2008.3-14. LTR-NCE-04-105, "User's Manual for the Version 4.0 of PLTATHOS and VGUB to Read SG Model Data at Execution Time," February 11, 2005.3-15. WNEP-9642, Rev. 1, "VGUB Code User's Manual STD-UM-87-00003090," October 1, 1996.3-16. LTR-NCE-08-26, Rev. 1, "Guideline on Convergence Parameters Affecting ATHOS3 Solution," May 13, 2008.1814-AA086-M0238, REV. 0 Page 62 of 415 Page 62 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 3-17. E-mail from Brian Sarno (Southern California Edison) to Damian A. Testa (Westinghouse),  
  "New SONGS Schedule Item for Westinghouse," May 22, 2012, (Included in Appendix A of Reference 3-2).
3-4. MHI Report, L5-04GA567, Rev. 4, "San Onofre Nuclear Generating Station, Units 2 & 3 Replacement Steam Generators Evaluation of Stability Ratio for Return to Service," July 21, 2012.
3-5. EPRI-NP-4604-CMM, "ATHOS3: A Computer Program for the Thermal-Hydraulic Analysis of Steam Generators," July 1986.
3-6. LTR-SGDA-08-148, "Software Release Letter for Modules of the ATHOS Family of Codes and Executable Scripts: GPP60 Version 4.0, RUNATHOGPP Version 1.4, PLATES60 Version 3.0, and RUNPLATES Version 1.4," June 13, 2008.
3-7. LTR-NCE-07-48, "Software Release Letter for ATHOS Codes and Scripts GPP60 Revision 3.0, RUNATHOGPP Version 1.3, ATHOS60 Version 3.0, and RUNATHOS Version 1.3," April 2, 2007.
3-8. LTR-SGDA-05-63, "Software Release Letter for Specific ATHOS Family Codes: Software Changes Specification and Validation for Version 4.0 of Codes PLTATHOS and VGUB on HP-UX 11.0," March 24, 2005.
3-9. LTR-NCE-08-1 1, Rev. 1, "User's Manual for the Newly Added Features to ATHOGPP Version 3.0 and PLATES Version 2.0 Computer Codes," February 29, 2008.
3-10. WNEP-9639, Rev. 1, "Modification and Qualification of ATHOGPP Code to Simulate AVBs for ATHOS Analysis," October 20, 1996.
3-11. CN-SGMP-12-12, Rev. 1, "Software Changes to ATHOGPP for Modeling of SONGS RSG Units 2 and 3 Anti-vibration Bars," June, 2012.
3-12. WNEP-9640, Rev. 1, "PLATES Code User's Manual (Feedring Design Version of PLATES),"
October 20, 1996.
3-13. MHI Report, L5-04GA510, Rev. 5, "San Onofre Nuclear Generating Station, Units 2 & 3 Replacement Steam Generators Thermal and Hydraulic Parametric Calculations," November 12, 2008.
3-14. LTR-NCE-04-105, "User's Manual for the Version 4.0 of PLTATHOS and VGUB to Read SG Model Data at Execution Time," February 11, 2005.
3-15. WNEP-9642, Rev. 1, "VGUB Code User's Manual STD-UM-87-00003090," October 1, 1996.
3-16. LTR-NCE-08-26, Rev. 1, "Guideline on Convergence Parameters Affecting ATHOS3 Solution,"
May 13, 2008.
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==Subject:==
==Subject:==
"SONGS Operating Conditions," March 16, 2012, (Included in Appendix A of Reference 3-18).3-18. CN-SGMP-12-17, Revision 2, "Thermal-Hydraulic Analysis of the SONGS Unit 3
"SONGS Operating Conditions," March 16, 2012, (Included in Appendix A of Reference 3-18).
3-18. CN-SGMP-12-17, Revision 2, "Thermal-Hydraulic Analysis of the SONGS Unit 3 Replacement Steam Generators for the February 2011 through January 2012 Operating Period," September 2012.
1814-AA086-M0238, REV. 0                  Page 63 of 415
 
Page 63 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 4.0  Flow-Induced Vibration Analysis 4.1  FIV Introduction Flow-induced vibration models of the SONGs MHI replacement steam generators were developed to evaluate the effects of secondary side flow on the tubes. The FIV models included the 7 tube support plates along with the 6 anti-vibration bars, which provide support to the tube at up to 12 locations. Figure 4-1 contains a representative sketch of the model used in the analysis. Table 4-1 contains a listing of the various cases considered with respect to the boundary conditions at the AVB that were imposed on the model. Figure 4-2 contains the description of the AVB numbering system used in this analysis. The FIV analysis was performed with the FASTVIB and FLOVIB computer codes using thermal
Note that this was not an anticipated outcome, but the following study clearly made a determination that totally separate analysis for SG 2E088 and SG 2E089 was not necessary.
Note that this was not an anticipated outcome, but the following study clearly made a determination that totally separate analysis for SG 2E088 and SG 2E089 was not necessary.
The initial ATHOS runs were for SG 2E089. To determine if additional ATHOS and FASTVIB runs for the 2E088 steam generator were needed, the 70% power level was run for SG 2E088 and compared to the SG 2E089 results. The goal of the comparison was to show that the results between the two steam generators were similar enough such that the ATHOS and FASTVIB evaluations did not need to be performed for every power level for each steam generator.
The initial ATHOS runs were for SG 2E089. To determine if additional ATHOS and FASTVIB runs for the 2E088 steam generator were needed, the 70% power level was run for SG 2E088 and compared to the SG 2E089 results. The goal of the comparison was to show that the results between the two steam generators were similar enough such that the ATHOS and FASTVIB evaluations did not need to be performed for every power level for each steam generator. In addition, it was noted that tube plugging in the steam generators was not symmetrical about the center column of the tube bundle. Both ATHOS and FASTVIB assume symmetry about the center column as the SG is typically symmetric about this plane. Therefore two separate evaluations were needed, one for each side of the steam generator (low column and high column). Although the intention was to evaluate both the low and high column tubes for SG 2E089, a comparison was also made between the low and high column tubes to determine the amount of difference associated with non-symmetrical
In addition, it was noted
A total of 305 tubes were plugged in SG 2E088, 226 of these had stabilizers of varying length installed.
A total of 305 tubes were plugged in SG 2E088, 226 of these had stabilizers of varying length installed.
5.4 Summary of Unit 3 Eddy Current Review A review of the Unit 3, SG 3E088 +Pt data for tubes with and without freespan wear was conducted.
5.4 Summary of Unit 3 Eddy Current Review A review of the Unit 3, SG 3E088 +Pt data for tubes with and without freespan wear was conducted. The review concentrated on the AVB wear signals. As tube-to-tube wear was already known in SG 3E088, and extension of the wear outside of the AVBs was confirmed
The review concentrated on the AVB wear signals. As tube-to-tube wear was already known in SG 3E088, and extension of the wear outside of the AVBs was confirmed visually, a review of this data to determine if extension of the wear scars was occurring is academic.
Instead the review concentrated on the direction of the wear extension (i.e., towards which AVB was the wear oriented).
If the tube is experiencing in-plane displacement in the vicinity of AVB3, and the direction of the tube motion is towards AVB2, or towards the next highest row, wear at AVB3, which extends outside of the boundary of the AVB, would be directed towards AVB4.The initial review was focused on those tubes with tube-to-tube wear and the fewest number of AVBs with wear reported by the bobbin coil. These tubes would be expected to be the most challenging for simulation of in-plane displacement using the Westinghouse FIV models. These tubes are typically the lowest and highest row tubes in a column with tube-to-tube wear. These tubes were termed "boundary" tubes. It is possible that these tubes are stable with regard to in-plane displacement and that the observed wear is generated by the in-plane displacement of an adjacent tube. Thus, the review was extended to include adjacent (same column) tubes also reported with tube-to-tube wear. As it would be advantageous for refinement of the FIV model, selected columns of tubes were also reviewed beginning at row locations just outside of the tube-to-tube wear region, through this region, and just outside of the region at the opposite side.In other words, if tube-to-tube wear was reported in Column 78 on Rows 90 to 100, the review would include tube locations R90 to R100 in C78, plus, R86 and R104 in Column 78. It was judged that this review would provide insight about the tube motions and thus vibration mode shapes.As with the Unit 2 review, all AVB intersections with observable wear were identified, if the intersection contained single- or double-sided wear, if the wear scars were flat (uniformly deep depth profile) or tapered, if there was any AVB symmetry variance of adjacent AVBs, and if so
* Stayrods
* Stayrods
* B01,802 PRX A 803, B04 PRX BO5,806 PRX 0807,808 PRX A B09,B10 PRX c B1l, 812 PRX 0 20%TW or greater
* B01,802 PRX A 803, B04 PRX BO5,806 PRX 0807,808 PRX A B09,B10 PRX c B1l, 812 PRX 0 20%TW or greater
* AVB Dent 0 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0-i 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 Column Figure 5-2 SG 2E089 Tube-to-Tube Proximity Map Based on 2012 Eddy Current Data Re-analysis Page 206 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 0 00 SGZ..89 Tube-to-Tube Proximity  
* AVBDent 150 140 130 120 110 100 90 80
>1V using January 2C12 Data*BaseTAbes 014ot Leg #ColdLeg *Stayrods o20%TWo,-Greater 0 150 90 140 M ~ 130 -- ----... .... .....C)oo 120 R -::: :: ::.... .. .....00 .B 100 .. .. ... .. ... .. ..100............... ...... ... ...70.;o..-. -. ... ....... .. ..............
                                                      -i 0  70 60 50 40 30 20 10 0
:.. ........=..90 .B.......................................  
0       10   20       30       40     50       60   70       80     90     100     110     120     130     140     150     160     170   180 Column Figure 5-2 SG 2E089 Tube-to-Tube Proximity Map Based on 2012 Eddy Current Data Re-analysis
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Page 206 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 0
*.......*...*..................
00                                                                                               SGZ..89 Tube-to-Tube Proximity >1V using January 2C12 Data
.............  
                                                                                                      *BaseTAbes                     014ot Leg             #ColdLeg                 *Stayrods               o20%TWo,-Greater 0             150 90         140 C) oo         120                                                                                                                             :* :!!!*R -* ::: :: ::.... .. . . . . .
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100
olt. roxim...Rport Co 0 02 00 OD X M cc 0 0,-h rn Page 207 of 414 LTR-SGDA-1 2-36, Rev. 3 NP-Attachment February 15, 2013 SG2-88 Tube-to-Tube Proximity using January 2012 Data-Base Tubes 0 Hot Leg PRX A Cold Leg PRX 0 20%TW and Greater* AV8 Dent 150 140 130 120 110 100 90 80 0 70 A A::::~:: .......:::.. ...........
                                                    ... ........                                                                                                       .............                                                                   . ...... . . . . ...........
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..........  
 
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Co Page 207 of 414 LTR-SGDA-1 2-36, Rev. 3 NP-Attachment February 15, 2013 0
.* *
02 SG2-88 Tube-to-Tube Proximity using January 2012 Data
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                                                                                        -Base Tubes 0 Hot Leg PRX A Cold Leg PRX0 20%TW and Greater* AV8 Dent 150 X
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... .. ....... * * ...........
100                                                                                                                                                                                                          ..................
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                                                  .. ...... ... ..............
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                                                ..   . . .. . .. . . . . . .. . . . .. . .-. . . . . . .
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                                              .......................
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..............................................................................................................................................................................................................................................................................................................................................................0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 Column Figure 5-4 SG 2E088 Tube-to-Tube Proximity Map Based on 2012 Eddy Current Data Re-analysis co 00 00 0 Page 208 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Figure 5-5 Field Proximity Signal Using +Pt Page 209 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15. 2013 Figure 5-6+Pt Multi-Frequency Response for Suspected Freespan Wear on SG 2E089 Rl13 C81  
                                                                                                                                                                    .         ...........................
-.x, Oo Page 210 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 0, 0)0)CA)mI Figure 5-7+Pt Terrain Plot for Suspected Freespan Wear on SG 2E089 RI 11 C81 Page 211 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 i -4 Figure 5-8 Multi-Frequency  
                                                                                                                                                                                . . . . . . . . . .. . . . . .. .. . .......                   . . . . ..   - ..
+Pt Response for AVB Wear Extension on SG 3E088 R107 C75  
90                                    . . .. . .. . .. . . . .. .. . . . . . . . . .**** * ** ** *****                                                                  * **
-.O 00 0,.90 m 0 Page 212 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Figure 5-9+Pt Full Scan Line Lissajous Plot and Terrain Plot for SG 3E088 R107 C75 0, 0)00 0)90 Page 213 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Figure 5-10+Pt Terrain Plot for SG 3E088 R107 C75 0)L 00 CA)0, m 90;U m C)Page 214 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Figure 5-11 Non-Typical  
                                                                                                                                                                                  . .**..* ***.. ** *** ** ** * ** ** * ** ** * **** * ***.
+Pt Response on R107 C75 SG 3E088 Page 215 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 5-12+Pt Multi-Frequency Plot for Laboratory Simulation of Freespan Wear (12%TW)
                                        .....
Page 216 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 5-13+Pt Terrain Plot for Laboratory Simulation of Freespan Wear (12%TW)
                                        . ... ..........................
                                                                                .... ... ... .........             ...........................
                                                                                                                                                        ........ ...........                       ******* .........
                                                                                                                                                                                                                  . .... .. .. ...........
                                                                                                                                                                                                                  ****************-*******      ....... ****°      ...
80                        . . . . . . . . . . . . . . .. . .. .. .. ... . .. .. .. .. . .. .. .. .. .. . .. .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. .. .. .. .. . .. .. .. . ... . .. .. .. .. .. .. .. . .. .. .. .. .. ..
                                  .. .. .. . . . , ., ., .* .. ... . .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . * * * * * * . . . . . . . . . . . . . . . . . . . . . . . . .
                                . .. ... . .. ... . .. .. .. .. ... . .. .. .. . .. .. .. .. .. .. .. .. .. . .. .. .. .. .. . .. .. .. . .. .. .. .. . .. .. . .. .. .. .. .. .. .. .. .. .. .. . *. .. .. .. .. . .. .. .. .. .. .. .. . .. .. .. .. .. .. .
0                        . . .. ... . .. ... . .. .. .. .. ... . .. .. .. . .. .. .. ...
                                                                                                                                                                              . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
                                                                                                      . .. .. .. .. . .. .. .. .. .. . .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
                            . . . . . . . . . . . .. ... . .. .. .. . .. .. ... .. .. . *. *. *. * .* .* ., . .. . ... . .. .. .. .. .. .. .. .. .. .. . . .. .. .. .. .. .. .. .. .. . .. .. .. .. .. . .. .. .. .. .. .. .. . .. .. .. .. .. .. .. .
cc      70                    . .. . . .. . . .
                            . . . . . .. ... . .. .. .. .. ... . .. .. .. . .. .. .. ... . .. .. .. .. . .. .. .. .. .. .. . .. .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. . .. .. .. .. .. .. . . .. .. .. .. .. .. .. ..
                          . .   . . .
                          . . . .. ... . ... .. . .. .. .. .. ... . .. .. .. . .. .. ... .. . .. .. .. .. .. .. .. .. .. . ... . .. .. .. .. .. .. .. .. .. .. . .. .* .* ., . .* ., .* .. .. . .. .. .. .. .. . .. .. .. .. .. .. . * .* .* ., .* .. .. . . .
                          .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
                        . .. .. . ... .. . ... .. . .. .. .. .. ... . .. .. .. . ... . .. ... .. . .. .. .. . .. .. .. .. .. . ... . .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. . .. *. ,. *. ,. . " .. .. .. .. .. .. .. .. ..
0              60.           .       .     .   .     *....
                                                        . .           . o...       .   ............                     ..............,.......................                                                                 .......................
0,
  -h              S. . . . . ..
                      . . . . .....-            . .-.       -.. -. . . . ..                 ..       .........-.           .......-
                                                                                                                                              * ..-.. .....-. . ....-.-.-.-.-          ..........
                                                                                                                                                                                                          ..***.- .
                                                                                                                                                                                                                    .........-.-
                                                                                                                                                                                                              .. ***    ... ***
                                                                                                                                                                                                                        ***      . ***
                                                                                                                                                                                                                                ..   ..*..* ***
                                                                                                                                                                                                                                              .*..o....**-  ... o.. ..*
                                                                                                                                                                                                                                                            ***
                                                                                                                                                                                                                                                            . .***
                                                                                                                                                                                                                                                        .. ..   .. ***
                                                                                                                                                                                                                                                                      ... ***  * . . o.
                                                                                                                                                                                                                                                                          ... ******
                                                                                                                                                                                                                                                                              ..
                                                                                                                                                                                                                                                                                . .. . **
                                                                                                  .. ...     . . ... ...         ... *.*.                                 ..
                                                                                                                                                                          . ... ... ... ... ..       ..**
                                            .. ... ... ..       . ..   . ..*  . . .....
4O.  .*,-
                      . . .. -.       . ..-.-. *      .- .-.-   -. , .*  - .°.- . .,*-         .. .°      * - -. . .*    o          . . .°--° o- % - -° .-
                                                                                                                                    .,-                                          -..     , .° ° .., .. . ,-.°,* . - *,..* .,o..                          , * -,-   . °.- o-. .- -,-  -° 50      .-                                                       ...-...
                                                                              . .. .....--...     ,,.,. .- X. , ...                     .-.       , ..         .,..*.---...°                    ,.*-o..X-            .- .,.X,.o *                                        *
                                                                                                                                                                                                                                                                  ,.*.. ......   . .,-.
rn
                .
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                      . .......
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                      .. .......               ***............
                                                      ...........
I...........
                                                        ...........
                                                                                      ..   .....
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* I  .
                ......................................................................................
                                                                                                          ..
                                                                                                          ....
                                                                                                      .....
                                                                                                                ..........
                                                                                                                        ..
                                                                                                                      ..
                                                                                                                      .....   .......         ...
                                                                                                                                            ...
                                                                                                                                            ..     ... ..........
                                                                                                                                                    ......... ..........
                                                                                                                                                                  .......
                                                                                                                                                                                    ............
                                                                                                                                                                                            ........
                                                                                                                                                                                          .....
                                                                                                                                                                                      ..........
                                                                                                                                                                                                          ....   ...
                                                                                                                                                                                                                  ..........
                                                                                                                                                                                                                    ......
                                                                                                                                                                                                                        ...       ..
                                                                                                                                                                                                                                  ..
                                                                                                                                                                                                                                      ... ............
                                                                                                                                                                                                                                          ..
                                                                                                                                                                                                                                          ..
                                                                                                                                                                                                                                                  ..........
                                                                                                                                                                                                                                                ........
                                                                                                                                                                                                                                                ..........
                                                                                                                                                                                                                                                                        ...........
                                                                                                                                                                                                                                                                            ......
                                                                                                                                                                                                                                                                            .........
                                                                                                                                                                                                                                                                            .........
                                                                                                                                                                                                                                                                                          ..
20      ...........
              ...............................
              .......................................................................................
                . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .
              ........................................................................................                                     ...................................................
              .......................................................................................
10 0
0        10              20              30                40            50                60              70                    80                  90            100          110          120            130               140           150         160         170   180 Column Figure 5-4 SG 2E088 Tube-to-Tube Proximity Map Based on 2012 Eddy Current Data Re-analysis
 
Page 208 of 414 co                                  LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 00 00 0
Figure 5-5 Field Proximity Signal Using +Pt
 
Page 209 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15. 2013 Figure 5-6
+Pt Multi-Frequency Response for Suspected Freespan Wear on SG 2E089 Rl13 C81
 
-. x, Oo                                                           Page 210 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 0,
0) 0)
CA) mI Figure 5-7
      +Pt Terrain Plot for Suspected Freespan Wear on SG 2E089 RI 11 C81
 
Page 211 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 i           4-Figure 5-8 Multi-Frequency +Pt Response for AVB Wear Extension on SG 3E088 R107 C75
 
-.O 00                                                               Page 212 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 0,
.90 m
0 Figure 5-9
    +Pt Full Scan Line Lissajous Plot and Terrain Plot for SG 3E088 R107 C75
 
0,                                       Page 213 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 0) 00 0) 90 Figure 5-10
  +Pt Terrain Plot for SG 3E088 R107 C75
 
0)L Page 214 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 00 0,
CA) m
;U m
C) 90 Figure 5-11 Non-Typical +Pt Response on R107 C75 SG 3E088
 
Page 215 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 5-12
+Pt Multi-Frequency Plot for Laboratory Simulation of Freespan Wear (12%TW)
 
Page 216 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 5-13
+Pt Terrain Plot for Laboratory Simulation of Freespan Wear (12%TW)
 
Page 217 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 5-14 Pancake Coil Response for Laboratory Simulation of Freespan Wear (12%TW)
Page 217 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 5-14 Pancake Coil Response for Laboratory Simulation of Freespan Wear (12%TW)
Page 218 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 5-15 Pancake Coil Multi-Frequency Response for Laboratory Simulation of Freespan Wear (12%TW)
Page 218 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 a,b,c Figure 5-15 Pancake Coil Multi-Frequency Response for Laboratory Simulation of Freespan Wear (12%TW)
LPage 219 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 0) JSUMEN !N1W VIE UO,,,LY5I5 0U6=09 JtsKjAilk PILt CS III t I no PM IMM OD Jam, I lII IIt MI 1j" F t I: I Figure 5-16 Bobbin Coil 300 and 150 kHz Absolute (Ch4 and Ch6) Response for Laboratory Simulation of Freespan Wear  
 
-3 00 0);0 m O0 Page 220 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Figure 5-17 Bobbin Coil Response for SG 2E089 RI II C81 Page 221 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 SG 3E088 Reviewed Tube Locations Tubes a +Pt Reviewed Tube 0 Freespan Wear Tube 145 135 S " 0 00 115 .-" ._ " , ". ". " .o@oQ "..0 0 0*~ 0* ...* -, ..65 70 75 80 85 90 95 100 Column Figure 5-18 Plot of SG 3E088 Locations for which +Pt Data Review was Conducted Page 222 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 WVI 30%TW/0/5 8 a 3 Li 9 10 11\12 2 60 0 00 0 0 0 0n0 1 0 0 0 0 00 o~og 0 00 0 0 6 0 0 0~ogO 00 00 0 0 0 09 0 0 000 0G0 60 00 Q 0 00 U3 SG-88 Row: 98 Column: 78 Figure 5-19 Sample of Tube Motion Plot Page 223 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Figure 5-20+Pt Terrain Plot of R93 C85 TSP 07H Bottom  
LPage                                                                                   219 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013
-.1 Page 224 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 C)m 0o'r W I 1A 1 ; ' 1-1 ,14 Figure 5-21+Pt Terrain Plot of R93 C85 TSP 07H Top  
: 0)             JSUMEN !N1W VIE UO,,,LY5I5 0U6=09 JtsKjAilk PILt CS             III     t           no                                                              I PM IMM OD                                                                                 Jam,MI IlII 1j"IItF t I:                                                                                   I Figure 5-16 Bobbin Coil 300 and 150 kHz Absolute (Ch4 and Ch6) Response for Laboratory Simulation of Freespan Wear
-A 0 C)o0 m 0 Page 225 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Figure 5-22+Pt Terrain Plot of R93 C85 TSP 07H Vertical Offset between Wear Edge and TSP Edge 0, 00 4%0 m 0 Page 226 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 SVI 20%TW SVI 46%TW 6 7 8 5 4 9 3 10.T,,I- D w 0 A.- I,&2 1 II, 0 0 0 11 12 I c4WM U3 SG-88 Row: 93 Column: 85 Figure 5-23 Motion Plot of R93 C85}}
 
-3 Page 220 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment 00                                            February 15, 2013 0)
;0 O0 m
Figure 5-17 Bobbin Coil Response for SG 2E089 RI II C81
 
Page 221 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 SG 3E088 Reviewed Tube Locations Tubes   a +Pt Reviewed Tube   0 Freespan Wear Tube 145 135 S
                                        "
0 00 115       .                                         -" . _   "
00                      0
      ,   ".     ".     "                 . o@oQ                             "..
                      *~                                   0
        *     .             .   .     *                           -,     .               .
65               70       75             80             85               90             95           100 Column Figure 5-18 Plot of SG 3E088 Locations for which +Pt Data Review was Conducted
 
Page 222 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 WVI 30%TW 0            /
    /
a 5                               8 9
3                                             10 Li   2 00 60 0
0 0
0   0 0*00 o~og   60 0 0 11\
1          O*    n0    0 00      00
                                  ~ogO 00 0                       12 0 0 0 0 00           60 00 Q 0*00   0 0 0
0   0   000 09 0 0   00 0G0 U3 SG-88 Row: 98 Column: 78 Figure 5-19 Sample of Tube Motion Plot
 
Page 223 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 Figure 5-20
+Pt Terrain Plot of R93 C85 TSP 07H Bottom
 
-.1                                                               Page 224 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 C) 0o'r W I 1A 1 ; ' 1-1 ,14 m
Figure 5-21
                          +Pt Terrain Plot of R93 C85 TSP 07H Top
 
Page 225 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment
-A                                                                  February 15, 2013 C) o0 0
m 0
Figure 5-22
    +Pt Terrain Plot of R93 C85 TSP 07H Vertical Offset between Wear Edge and TSP Edge
 
0, 00                                                         Page 226 of 414 LTR-SGDA-12-36, Rev. 3 NP-Attachment February 15, 2013 4%
0 SVI 20%TW SVI 46%TW m                          6                 7 0                                                      8 5
4                                       9 3                                                 10
                                  . T,,I- Dw 0 A.- I,&
2                                                         11 II, 0
0 1          0 12 I
c4WM U3 SG-88 Row: 93 Column: 85 Figure 5-23 Motion Plot of R93 C85}}

Revision as of 22:58, 4 November 2019

Enclosure 6, LTR-SGDA-12-36, Rev. 3, Flow-Induced Vibration and Tube Wear Analysis of the San Onofre Nuclear Generating Station Unit 2 Replacement Steam Generators Supporting Restart. Cover Through Page 227 of 415
ML13051A197
Person / Time
Site: San Onofre Southern California Edison icon.png
Issue date: 02/15/2013
From: Bell B, Cullen W, Hall J, Langford P, Norman T, Pournaras T, Prabhu P, Thakkar J
Westinghouse
To:
Office of Nuclear Reactor Regulation
References
TAC ME9727 1814-AA086-M0238, Rev 0, LTR-SGDA-12-36, Rev 3
Download: ML13051A197 (228)
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