L-16-022, Steam Generator Inspection Reports - Fall 2015 Refueling Outage
| ML16025A168 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 01/22/2016 |
| From: | Richey M FirstEnergy Nuclear Operating Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-16-022 | |
| Download: ML16025A168 (78) | |
Text
~
RrstEnergy Nuclear Operating Company Marty L. Richey Site Vice President January 22, 2016 L-16-022 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
SUBJECT:
Beaver Valley Power Station, Unit No. 2 Docket No. 50-412, License No. NPF-73 Steam Generator Inspection Reports - Fall 2015 Refueling Outage Beaver Valley Power Station P.O. Box 4 Shippingport, PA 15077 724-682-5234 Fax: 724-643-8069 In accordance with Beaver Valley Power Station, Unit No. 2 Technical Specifications 5.6.6.2.2 and 5.6.6.2.4, FirstEnergy Nuclear Operating Company hereby submits two reports containing steam generator inspection results. The enclosed reports provide information required by the technical specifications that were obtained during inspections conducted during the fall 2015 refueling outage.
There are no regulatory commitments contained in this submittal. If there are any questions or if additional information is required, please contact Mr. Thomas A. Lentz, Manager-Fleet Licensing, at (330) 315-6810.
Sincerely, n..,Q r*
r1.
Marty L. Rich y Enclosure(s):
A. Beaver Valley Unit 2 End-of-Cycle 18 Analysis and Prediction for End-of-Cycle 19 Voltage-Based Repair Criteria 90-Day Report, Revision 1 B. Unit #2 - 2R18 Steam Generator F* (F Star) Report cc:
NRC Region I Administrator NRC Resident Inspector NRC Project Manager Director BRP/DEP Site BRP/DEP Representative
Enclosure A L-16-022 Beaver Valley Unit 2 End-of-Cycle 18 Analysis and Prediction for End-of-Cycle 19 Voltage-Based Repair Criteria 90-Day Report, Revision 1 (69 Pages Follow)
SG-SGMP-15-22 Revision 1 Westinghouse Non-Proprietary Class 3 January 2016 Beaver Valley Unit 2 End-of-Cycle 18 Analysis and Prediction for End-of-Cycle 19 Voltage-Based Repair Criteria 90-Day Report
@Westinghouse
Westinghouse Non-Proprietary Class 3 SG-SGMP-15-22 Revision 1 Beaver Valley Unit 2 End-of-Cycle 18 Analysis and Prediction for End-of-Cycle 19 Voltage-Based Repair Criteria 90 Day Report William R. LaMantia*, Senior Engineer Steam Generator Management Programs January 2016 Reviewer: William K. Cullen*, Fellow Engineer Steam Generator Management Programs Approved: David P. Lytle*, Manager Steam Generator Management Programs Owner Accepted:
0 I oc:c,{ IG.
berti Technical Services Engineering Owner Accepted RP~.
I h(tP P. Pauvlinch, Manager, Technical Services Engineering
- Electronically approved records are authenticated in the Electronic Document Management System.
SG-SGMP-15-22 Revision 1 Westinghouse Electric Company LLC P.O. Box 158 Madison, PA 15663
© 2016 Westinghouse Electric Company LLC All Rights Reserved
II RECORD OF REVISIONS Revision Date Description 0
December Original 2015 1
January Editorial revisions to add commas and improve consistency.
2016 In Section 3. I, sentence added to better explain that specific inspection probes can only be used in Row 3 and 4 tubes with sleeves and indications on the cold leg side was corrected.
Tables 3-1, 3-2, 3-3, and 6-1 and Figures 3-1, 3-2, 3-3, 6-1, 6-2, and 6-3 updated to show that no indications exist beyond l.5V.
Figures 3-5 and 3-6 updated to show that the Cycle 17 growth rate curve was use as it bounded the growth observed during Cycle 18.
Note added to Table 7-2 to better explain the use of the Cycle 17 growth rate curve, and Maximum Volts for SG-B corrected.
Comment column added to the tables in Appendix A.
Change bars are used in the left margins where substantial or technical changes occurred. Change bars are not used for editorial changes such as formatting changes and minor non-technical corrections.
SG-SGMP-15-22 Revision 1
111 TABLE OF CONTENTS RECORD OF REVISIONS............................................................................................................ ii TABLE OF CONTENTS............................................................................................................... iii LIST OF TABLES......................................................................................................................... iv LIST OF TABLES............................................................................................. v 1
INTRODUCTION............................................................................................................ 1-1 2
SUMMARY
AND CONCLUSIONS................................................................................ 2-1 3
2Rl 8 INSPECTION RESULTS AND VOLTAGE GROWTH RATES............................. 3-1 3.1 2Rl 8 Inspection Results............................................................................................. 3-1 3.2 Voltage Growth Rates................................................................................................. 3-3 3.3 Probe Wear Criteria..................................................................................................... 3-4 3.4 NDE Uncertainties...................................................................................................... 3-4 4
DATABASE APPLIED FOR LEAK AND BURST CORRELATIONS........................... 4-1 4.1 Tube Material Properties............................................................................................ 4-1 4.2 Burst Correlation......................................................................................................... 4-1 4.3 Leak Rate Correlation................................................................................................. 4-1 4.4 Probability of Leak Correlation.................................................................................. 4-1 4.5 NDE Uncertainties...................................................................................................... 4-1 4.6 Upper Voltage Repair Limit....................................................................................... 4-1 5
SLB ANALYSIS METHODS........................................................................................... 5-1 6
BOBBIN VOLTAGE DISTRIBUTIONS......................................................................... 6-1 6.1 Calculation ofVoltage Distributions.......................................................................... 6-1 6.2 Probability of Detection (POD).................................................................................. 6-2 6.3 Limiting Growth Rate Distribution............................................................................ 6-2 6.4 Cycle Operating Period.............................................................................................. 6-2 6.5 Projected 2Rl 8 Voltage Distribution......................................................................... 6-2 7
SLB LEAK RATE AND TUBE BURST PROBABILITY ANALYSES........................... 7-1 7.1 2Rl 8 Condition Monitoring Leak Rate and Tube Burst Probability........................ 7-1 7.2 Cycle 19 Operational Assessment Leak Rate and Tube Burst Probability.............. 7-1 8
REFERENCES................................................................................................................. 8-1 APPENDIX A............................................................................................................................. A-1 SG-SGMP-15-22 Revision I
IV LIST OF TABLES Table 3-1 2R 18 OSI Voltage Distribution for SG-A............................................... 3-5 Table 3-2 2R18 OSI Voltage Distribution for SG-B............................................... 3-6 Table 3-3 2Rl 8 OSI Voltage Distribution for SG-C............................................... 3-7 Table 3-4 Indication Distribution as Function of Tube Support Plate........................... 3-8 Table 3-5 Voltage Growth Cumulative Distribution................................................ 3-9 Table 3-6 Growth Rate as Function of BOC Voltage Range..................................... 3-10 Table 3-7 Indications with the Largest Growth in Cycle 18...................................... 3-11 Table 4-1 7 /8" Tube Burst Pressure vs. Bobbin Amplitude Correlation Parameters............4-3 Table 4-2 Tube Leak Rate vs. Bobbin Amplitude Correlation Parameters......................4-4 Table 4-3 7/8" Tube Probability of Leak Correlation Parameters.................................4-5 Table 6-1 Predicted Voltage Distribution at EOC-19............................................... 6-3 Table 7-1 Condition Monitoring Leak and Burst Results for 2Rl8.............................. 7-2 Table 7-2 Operational Assessment Leak and Burst Results for EOC-19 (POD= 0.6)......... 7-2 Table A-1 OSI Indications for 2Rl 8 in SG-A........................................................ A-1 Table A-2 OSI Indications for 2Rl 8 in SG-B........................................................ A-9 Table A-3 OSI Indications for 2Rl 8 in SG-C...................................................... A-20 SG-SGMP-15-22 Revision 1
v LIST OF FIGURES Figure 3-1 Measured Bobbin OSI Voltage, 2R18 SG-A........................................... 3-12 Figure 3-2 Measured Bobbin DSI Voltage, 2Rl 8 SG-B........................................... 3-13 Figure 3-3 Measured Bobbin DSI Voltage, 2R18 SG-C........................................... 3-14 Figure 3-4 Number of Measured Bobbin DSI as Function ofTSP............................. 3-15 Figure 3-5 Voltage Growth during Cycle 18...................................................... 3-16 Figure 3-6 Expansion of Figure 3-5 at Extreme Voltage Growth during Cycle 18............ 3-17 Figure 3-7 Voltage Growth in Cycle 1 vs. BOC Voltage........................................ 3-18 Figure 6-1 Predicted Voltage Distribution at EOC-19, SG-A.................................... 6-4 Figure 6-2 Predicted Voltage Distribution at EOC-19, SG-B.................................... 6-5 Figure 6-3 Predicted Voltage Distribution at EOC-19, SG-C.................................... 6-6 SG-SGMP-15-22 Revision 1 January 2016
1-1 1
INTRODUCTION This report provides a summary of the Beaver Valley Unit 2 steam generator (SG) bobbin and
+Point'1 probe inspections at tube support plate (TSP) intersections from the Fall 2015, 2Rl 8 outage, together with postulated Steam Line Break (SLB) leak rate and tube burst probability analyses. The 2R18 outage represents the third application of the Generic Letter (GL) 95-05 (Reference 1) voltage based repair criteria, and implementation of its requirements, to the Beaver Valley Unit 2 Model 51M SGs. The criteria were implemented during the 2R16 outage. Information required by the GL 95-05 is provided in this report, including SLB leak rates and tube burst probabilities calculated using the end-of-cycle (EOC) conditions for the recently completed Cycle 18, representing a condition monitoring assessment of bobbin coil signal amplitudes for observed possible indications. In addition, a projection of EOC-19 bobbin coil voltage distributions, as well as the associated SG tube leak rates and burst probabilities through EOC-19 conditions is provided.
The condition monitoring analysis at End-of-Cycle 18 (EOC-18) was carried out using the actual bobbin coil voltage distributions measured during the 2Rl 8 outage. These results show that the 2Rl 8 condition monitoring leak rates and conditional burst probabilities for all three SGs are well within their respective allowable limits. A comparison with the projections made in the previous 90 Day Report at the 2R 17 outage (Reference 2) shows that the predictions were very conservative. These evaluations utilized the Westinghouse generic methodology that uses Monte Carlo analysis techniques (Reference 3).
The operational assessment analysis was performed to project leak rates and tube burst probabilities for postulated SLB conditions at the end of the upcoming cycle (EOC-19) based on the 2.0 volt repair criteria for 7/8-inch diameter tubes. These analyses utilized bobbin voltage distributions measured during the recent (2R18) inspection and a growth rate distribution bounding the last two inspections (2Rl 7 and 2Rl 8). Leak and burst analyses for the operational assessment were performed using the Reference 4 default value primary-to-secondary pressure differential of 2560 psi. The Cycle 19 operational assessment predicts that SG B will be the limiting SG for projected leakage. With a Cycle 19 period of operation estimated at 550 effective full power days (EFPD), the limiting EOC-19 maximum leak rate for SG B is projected to be 0.303 gpm (room temperature), which is well below the allowable limit of 2.2 gpm for the faulted SG. The corresponding maximum tube burst probability for the limiting SG (also SG B) of 3.61 x 10-5 is well below the GL 95-05 limit of 1.0 x 10-2* Thus, the GL 95-05 requirements are predicted to be satisfied at the EOC-19.
1 +Point' is a trademark of Zetec, Inc.
SG-SGMP-15-22 Revision 1 January 2016
2-1 2
SUMMARY
AND CONCLUSIONS A total of l 051 distorted support indications (DSI) in all three SGs combined were reported during the Beaver Valley Power Station Unit 2 (BVPS2) 2Rl 8 bobbin coil inspection. Per GL 95-05, only those DSI signals with a bobbin coil signal amplitude of 2.0 volts or greater are required to be inspected using a +Point (or equivalent) probe. All DSI signals reported during 2Rl 8 were less than 2.0 volts, so no indications were required to be tested with the +Point probe. However, some indications were tested with the +Point probe to confirm the minimal bobbin coil voltage growth condition. These indications were confirmed as axial outside diameter stress corrosion cracking (ODSCC) using the +Point coil during the 2R16 outage and have been inspected with a +Point probe at each successive outage. The maximum bobbin coil voltage indication in all three SGs was 1.46 volts on R21 C54 at the tube support plate designated as 02H in SG-B.
SLB leak rate and tube burst probability analyses were performed using the actual 2Rl 8 bobbin voltage distributions (condition monitoring analysis) as well as the projected EOC-19 bobbin voltage distributions (operational assessment). The SLB leak rates from the condition monitoring analysis show significant margins relative to the faulted SG allowable limit of 2.2 gpm (room temperature), Reference 11. The corresponding condition monitoring tube burst probability values are well below the allowable limit of 1.0 x 10-2.
At 2Rl 8, the largest SLB leak rate in the condition monitoring analysis is calculated for SG-B, with a magnitude of 0.0617 gpm, which is well below the allowable SLB leakage limit of 2.2 gpm in the faulted SG. All leak rate values quoted are equivalent volumetric rates at room temperature. The limiting conditional tube burst probability from the condition monitoring analysis, 1.57xl0-5 also predicted for SG-B, is well below the Nuclear Regulatory Commission (NRC) reporting guideline of 1.0 x 10-2* Thus, the condition monitoring results are well within the allowable limit/reporting guideline.
SLB leak rate and tube burst probability projections at the EOC-19 conditions were performed using the latest alternate repair criteria (ARC) database available for 7/8 inch outside diameter (OD) tubing (Addendum 7 update), which is documented in Reference 4. Leak and burst analyses for the Cycle 19 operational assessment were performed using the Reference 4 default primary-to-secondary pressure differential of 2560 psi. SG-B is predicted to be the limiting SG. For a projected Cycle 19 duration of 550 EFPD, the EOC-19 leak rate projected for SG-B using the GL 95-05 constant probability of detection (POD) of 0.6 is 0.303 gpm (at room temperature), which is less than the current limit of 2.2 gpm in the faulted SG. This leak rate projection utilized the leak rate calculation methodology of References 5 and 6. The limiting EOC-19 burst probability of 3.61 x 10-5 is also calculated for SG-B and is well below the allowable limit of 1.0 x 10-2* Therefore, all acceptance criteria of Reference l will be satisfied throughout Cycle 19.
SG-SGMP-15-22 Revision 1 January 2016
3-1 3
2R18 INSPECTION RESULTS AND VOLTAGE GROWTH RATES 3.1 2R18 Inspection Results For outages prior to 2Rl6, the alternate repair criterion per GL 95-05 had been approved for BVPS2, but was not implemented. FirstEnergy Nuclear Operating Company (FENOC) had not implemented the criterion due to the small number of bobbin indications at TSP intersections which were confirmed to contain axial outside diameter stress corrosion cracking (ODSCC) using a +Point probe. The criterion was implemented at 2Rl 6 due to an increase in the number of DSis confirmed to contain axial ODSCC from +Point probe examination. It should be noted, for 2R 16, and prior outages the bobbin probe analysis utilized the guidance and requirements of GL 95-05. Since the initial 2R16 (and prior outages) inspection plan did not assume that GL 95-05 would be implemented, all bobbin coil DSis were inspected using a +Point probe.
Note that under GL 95-05, only DSI signals with a 400/100 mix (hereafter referred to simply as the mix channel) signal amplitude of greater than 2.0 volts are required to be inspected using a
+Point probe.
In accordance with the guidance provided by the NRC GL 95-05, the 2Rl 8 inspection of the Beaver Valley Unit 2 SGs consisted of a 100% eddy current (EC) bobbin probe full length examination of the tube bundles in all three SGs. All hot and cold leg TSP intersections were inspected using 0.720 inch diameter bobbin probes, with the exception of those hot leg TSP intersections in Row 3 and Row 4 tubes, which contain SG tube sleeves at the hot leg top-of-tubesheet. In these tubes (2), a 0.630 inch diameter wide groove bobbin probe was used for DSI detection. If a DSI was observed using the 0.630 inch wide groove bobbin probe, an attempt was made to obtain an inspection of these locations using a 0.720 inch diameter bobbin probe from the cold leg side. If this probe could not pass over the U-bend, the tube was to be plugged as FENOC has not received NRC approval to utilize the reduced diameter probe results in the analysis. Prior evaluation of DSis from other plants, which were inspected using both the 0.640 inch wide groove and 0.720 standard bobbin probe show that the voltage response from the 0.640 inch wide groove, is conservative compared to the voltage response of the 0. 720 inch standard bobbin probe. A 0.630 diameter wide groove bobbin probe was used at 2Rl 7 and 2R 18.
The performance characteristics of the 0.630 and 0.640 inch wide groove probe were reviewed and confirmed to be consistent. During the 2Rl 7 outage, only one such indication was reported.
During the 2Rl 8 outage, none were reported. It should be noted that only two Row 3 or Row 4 tubes contain sleeves, both are Row 4 tubes.
To assess depth growth, the 2Rl 7 DSis with +Point probe confirmation were also inspected at 2Rl 8, even though none were required to be inspected with a +Point probe due to the low bobbin amplitudes. This inspection showed little or no change in the +Point probe signal character was observed, thus implying little or no depth growth of the indication. The largest
+Point probe signal amplitude in the 300 kHz channel from the confirmed DSI indications is only 0.2 volt, which represents a depth of 51 % through-wall (TW) using the sizing protocol of Electric Power Research Institute (EPRI) Examination Technique Specification Sheet (ETSS 128431. Long term trending of the Unit 2 DSI population has shown a limited growth potential. For Cycles 10 through 18, the mean DSI voltage growth has been essentially zero.
SG-SGMP-15-22 Revision 1 January 2016
3-2 Additionally, the +Point probe amplitudes for DSI signals confirmed as axial ODSCC have been much less than 1.0 volt, suggesting that a shallow depth of penetration exists. This in tum suggests the DSI voltage growth will remain minimal and not move to "extreme" over the next operating cycle. Thus, it can be concluded that, the character of DSI indications reported to date has been associated with a depth of penetration well below 100% TW.
In addition, the EOC-18 eddy current inspection plan included 100% +Point probe inspection of all hot leg and cold leg dents 2:.5 volts (as measured from the bobbin probe), which exceeds the GL 95-05 requirement for testing of said dents of down to the lowest cold leg TSP with DSI reports. The 2Rl 8 eddy current inspection plan also included 100% +Point probe inspection of dents with indication (DNI) and 25% of support plate residuals (SPR). The DNI call is generated using an auto data screening (ADS) process, and identifies any TSP intersection with a mix channel voltage of 2:.1.25 volts with a phase angle of ::S55 degrees. This screening is performed for the detection of signals, which could be confirmed as axial primary water stress corrosion cracking (PWSCC) indications at TSP intersections. The identification of a DNI call is not solely restricted to the ADS output; the manual data analysis can also report DNI indications. A DNI call also does not imply that a possible indication is being reported at a dented TSP, only that the bobbin coil signal amplitude and phase angle are within the DNI reporting window. SPRs are defined as bobbin coil signals which do not contain flaw-like components but have a signal amplitude of 2:.1.5 volts and phase angles >55 degrees. Axial ODSCC indications were not reported in these populations based on the +Point probe analysis. No axial PWSCC or circumferential stress corrosion cracking (SCC) was reported at any TSP intersection. The +Point probe inspection program for dents, DNis, and SPRs was extensive. The following table provides the number of +Point probe exams performed at TSP intersections during 2R 18.
DNI SPR SG
>5V Dents Total RPC Total RPC Tested Tested A
16 427 427 993 353 B
37 79 79 260 83 c
16 222 222 153 66 The requirements of the GL 95-05 methodology in Section 1.b of Reference 1 are all satisfied.
Tube intersections with the flow distribution baffle are excluded from this GL 95-05 analysis.
There are no other excluded tube support plate intersections (Reference 7). None of the indications included in this analysis were detected in dents >5.0 volts, as measured by bobbin.
All SPR indications >2V were tested with the +Point probe so that no ODSCC indications
> 1.0 volt would be missed or misread, as discussed earlier. No copper signal interference was detected.
Tables 3-1 through 3-3 present the 2Rl 8 bobbin voltage data for the TSP intersections in the three SGs with distorted support indications (DSis). A total of 1051 TSP locations had DSI indications in all three SGs combined, of which only 29 indications had amplitudes above SG-SGMP-15-22 Revision I January 2016
3-3 1.0 volt and no indications exceeded 1.5 volts. No DSI was above the GL 95-05 lower voltage repair limit of 2.0 volts.
Tables 3-1 through 3-3 tabulate the number of field bobbin indications, the number of those indications that were +Point probe RPC inspected, the number of +Point probe RPC confirmed indications, and the number of indications removed from service. No tubes were deplugged in the current inspection with the intent of returning them to service after inspection in accordance with the alternate repair criteria. The distribution of 2Rl 8 indications is also shown in Figures 3-1, 3-2 and 3-3 for SG-A, SG-B, and SG-C, respectively.
The distribution of 2R 18 indications as a function of support plate location is summarized in Table 3-4 and shown in Figure 3-4. The data show a strong predisposition of ODSCC to occur in the first few hot leg TSPs although the mechanism extended to higher TSPs. Only eight indications were detected on the cold leg side. This distribution is consistent with that observed at other plants and is commonly attributed to the temperature dependence of ODSCC.
Appendix A provides a listing of all DSis reported at the BVPS 2R 18 outage in the form of tables (Tables A-1, A-2, and A-3), whether axial ODSCC was confirmed (SAI/MAI in Comment column), and whether the tube contained the indication(s) was plugged (Comment column). No sleeves were installed at the 2Rl 8 outage.
3.2 Voltage Growth Rates For projection of leak rates and tube burst probabilities at EOC-19, voltage growth rates were developed from the 2Rl 7 and 2R18 inspection bobbin data. Growth is determined when the same indication can be identified in two successive inspections. Since there can be new indications in one outage, the number of indications for which a growth can be defined is less than the number of indications detected. Table 3-4 shows a distribution of growth as a function of TSP number.
Table 3-5 shows the frequency and cumulative probability distribution of growth as a function of voltage change in each BVPS2 steam generator during Cycle 18.
The average bobbin coil voltage growth rates for each SG during Cycle 18 are given in Table 3-6.
The average growth rates over the entire voltage range are negative indicating essentially no voltage growth. The Cycle 18 growth rates on an EFPY basis for each SG are shown in Figure 3-5. A magnification of the upper tail of this growth distribution is shown in Figure 3-6. Also shown in Figure 3-5 and in Figure 3-6 is a curve which bounds all of the growth curves for both Cycle 18 and Cycle 17 (Reference 2). The Cycle 17 bounding curve is more bounding than the Cycle 18 bounding curve, therefore, the Cycle 17 bounding curve is used in the operational assessment analysis to project the indication voltages at EOC-19.
Table 3-7 lists the top 15 indications based on Cycle 18 growth rate in descending order. The average growth rates over the entire voltage range for Cycle 18 are negative indicating essentially no voltage growth, but Table 3-7 shows that in cases of positive growth rates, that Cycle 18 had only modest growth. The growth during Cycle 18 for all indications was under 0.4 volts.
SG-SGMP-15-22 Revision I January 2016
3-4 To determine if BVPS2 growth rates exhibited a potential dependency on the BOC voltage, the growth rate data for Cycle 18 was plotted against BOC voltage, and the resulting plot is shown in Figure 3-7. The Cycle 18 growth data do not show any tendency to increase with the BOC voltage; if at all, the growth seems to decrease with increasing BOC voltage. Therefore, growth can be assumed independent of voltage in the Monte Carlo analysis for the operational assessment.
3.3 Probe Wear Criteria An alternate probe wear criteria approved by the NRC (Reference 8) was applied during the 2Rl 8 inspection. When a probe does not pass the 15% wear limit, this alternate criteria requires that only tubes with indications above 75% of the repair limit inspected since the last successful probe wear check be re-inspected with a good probe. As the repair limit for Beaver Valley Unit 2 is 2 volts, all tubes containing indications for which the worn probe voltage is above 1.5 volts are to be inspected with a new probe. Since no indications had amplitudes over 1.5 volts no tubes were retested due to the probe wear criteria being exceeded.
3.4 NDE Uncertainties The NOE uncertainties applied for the Cycle 18 voltage distributions in the Monte Carlo analyses for leak rate and burst probabilities are the same as those in the NRC Generic Letter 95-05 (Reference 1). The probe wear uncertainty has a standard deviation of 7.0% about a mean of zero and has a cut-off at 15% based on implementation of the probe wear standard. If the random sample of probe wear selected during the Monte Carlo simulations exceeds 15%, sampling of the probe wear distribution is continued until a value less than 15% is picked. The analyst variability uncertainty has a standard deviation of 10.3% about a mean of zero with no cut-off. These nondestructive examination (NOE) uncertainty distributions are included in the Monte Carlo analyses for SLB leak rates and tube burst probabilities based on the 2Rl 8 actual voltage distributions as well as for the EOC-19 projections.
SG-SGMP-15-22 Revision 1 January 2016
3-5 Table 3-1 2R18 DSI Voltage Distribution for SG-A
+Point In-Service, Probe
+Point
+Point Tested Not +Point Confirmed Voltage Number of Probe But Not Probe Returned or +Point Bin Indications Confirmed Confirmed Tested Plugged to Service Not Tested 0.1 4
0 0
4 0
4 4
0.2 47 2
0 45 0
47 47 0.3 81 7
0 74 0
81 81 0.4 60 I
0 59 0
60 60 0.5 44 2
0 42 0
44 44 0.6 24 I
0 23 0
24 24 0.7 14 2
0 12 0
14 14 0.8 7
0 0
7 0
7 7
0.9 13 I
0 12 0
13 13 I
2 0
0 2
0 2
2 1.1 2
0 0
2 0
2 2
1.2 2
I 0
1 0
2 2
1.3 1
0 0
1 0
1 1
1.4 0
0 0
0 0
0 0
1.5 0
0 0
0 0
0 0
1.6 0
0 0
0 0
0 0
1.7 0
0 0
0 0
0 0
1.8 0
0 0
0 0
0 0
1.9 0
0 0
0 0
0 0
2.0 0
0 0
0 0
0 0
Total 301 17 0
284 0
301 301 Average voltage= 0.386 volts SG-SGMP-15-22 Revision 1 January 2016
3-6 Table 3-2 2R18 DSI Voltage Distribution for SG-B
+Point In-Service, Probe Not
+Point
+Point Tested
+Point Confirmed Voltage Number of Probe But Not Probe Returned or +Point Bin Indications Confirmed Confirmed Tested Plugged to Service Not Tested 0.1 6
I 0
5 0
6 6
0.2 62 3
0 59 I
61 61 0.3 109 6
0 103 I
108 108 0.4 66 4
0 62 0
66 66 0.5 63 3
0 60 I
62 62 0.6 46 2
0 44 0
46 46 0.7 31 5
0 26 I
31 31 0.8 12 2
0 10 0
12 12 0.9 IO 0
0 10 0
10 IO I
5 0
0 5
0 4
4 1.1 5
0 0
5 0
5 5
1.2 2
0 0
2 0
2 2
1.3 0
0 0
0 0
0 0
1.4 0
0 0
0 0
0 0
1.5 I
0 0
I 0
I I
1.6 0
0 0
0 0
0 0
1.7 0
0 0
0 0
0 0
1.8 0
0 0
0 0
0 0
1.9 0
0 0
0 0
0 0
2.0 0
0 0
0 0
0 0
Total 418 26 0
392 4
414 414 Average voltage= 0.401 volts SG-SGMP-15-22 Revision I January 2016
3-7 Table 3-3 2R18 DSI Voltage Distribution for SG-C
+Point In-Service, Probe Not
+Point
+Point Tested
+Point Confirmed Voltage Number of Probe But Not Probe Returned or +Point Bin Indications Confirmed Confirmed Tested Plugged to Service Not Tested 0.1 3
0 0
3 0
3 3
0.2 50 2
0 48 0
50 50 0.3 71 2
0 69 0
71 71 0.4 59 2
0 57 0
59 59 0.5 44 2
0 42 1
43 43 0.6 35 4
0 31 0
35 35 0.7 30 3
0 27 1
29 29 0.8 17 2
0 15 0
17 17 0.9 14 1
0 13 0
14 14 1
2 1
0 1
0 2
2 1.1 3
0 0
3 0
3 3
1.2 0
0 0
0 0
0 0
1.3 4
0 0
4 0
4 4
1.4 0
0 0
0 0
0 0
1.5 0
0 0
0 0
0 0
1.6 0
0 0
0 0
0 0
1.7 0
0 0
0 0
0 0
1.8 0
0 0
0 0
0 0
1.9 0
0 0
0 0
0 0
2.0 0
0 0
0 0
0 0
Total 332 19 0
313 2
330 330 Average voltage = 0.424 volts SG-SGMP-15-22 Revision 1 January 2016
3-8 Table 3-4 Indication Distribution as Function of Tube Support Plate SG-A SG-B Largest Average Largest Average Number of Max.
Ave.
- Growth, Growth, Number of Max.
Ave.
- Growth, Growth, TSP Indications Volts Volts Volts Volts TSP Indications Volts Volts Volts Volts 02H 110 1.23 0.40 0.39
-0.04 02H 178 1.46 0.43 0.62
-0.02 03H 85 1.03 0.42 0.30
-0.03 03H 128 1.15 0.43 0.45
-0.01 04H 40 0.70 0.35 0.20
-0.03 04H 50 1.01 0.36 0.65
-0.01 05H 41 0.83 0.36 0.83
-0.02 05H 34 0.77 0.31 0.56 0.03 06H 8
0.44 0.28 0.17
-0.02 06H 8
0.42 0.29 0.09
-0.04 07H 5
0.66 0.41 0.52 0.11 07H 8
0.41 0.28 0.08
-0.04 08H 9
0.41 0.26 0.41 0.04 08H 7
0.73 0.29 0.28 0.01 04C 0
04C 1
0.14 0.14 0.02 0.02 06C 2
0.30 0.25 0.08 0.03 06C 2
0.15 0.14 0.15 0.04 08C I
0.28 0.28 0.02 0.02 08C 2
0.33 0.29 0.33 0.16 Total 301 Total 418 SG-C Composite Largest Average Largest Average Number of Max.
Ave.
- Growth, Growth, Number of Max.
Ave.
- Growth, Growth, TSP Indications Volts Volts Volts Volts TSP Indications Volts Volts Volts Volts 02H 135 1.30 0.51 0.36
-0.04 02H 423 1.46 0.45 0.62
-0.03 03H 99 1.04 0.41 0.36
-0.06 03H 312 1.15 0.42 0.45
-0.03 04H 41 0.71 0.31 0.45 0.00 04H 131 1.01 0.34 0.65
-0.01 05H 29 0.77 0.37 0.30
-0.03 05H 104 0.83 0.34 0.83
-0.01 06H 13 0.35 0.23 0.06
-0.10 06H 29 0.44 0.26 0.17
-0.06 07H 7
0.51 0.26
-0.05
-0.13 07H 20 0.66 0.30 0.52
-0.03 08H 8
1.08 0.42 0.04
-0.07 08H 24 1.08 0.32 0.41
-0.01 04C 0
04C 1
0.14 0.14 0.02 0.02 06C 0
06C 4
0.30 0.20 0.15 0.00 08C 0
08C 3
0.33 0.29 0.33 0.11 Total 332 Total 1051 SG-SGMP-15-22 Revision 1 January 2016
3-9 Table 3-5 Voltage Growth Cumulative Distribution SG-A SG-B SG-C Comoosite Voltage Change:
Cumulative Cumulative Cumulative Cumulative EOC-18 minus Number of Probability Number of Probability Number of Probability Number of Probability EOC-17 Indications Distribution Indications Distribution Indications Distribution Indications Distribution
-0.8<L'l V:S-0.7 0
0.0000 0
0.0000 0
0.0000 0
0.0000
-0.7<L'l V:S-0.6 0
0.0000 0
0.0000 0
0.0000 0
0.0000
-0.6<ll V:S-0.5 0
0.0000 0
0.0000 0
0.0000 0
0.0000
-0.5<ll V:S-0.4 0
0.0000 0
0.0000 0
0.0000 0
0.0000
-0.4<L'l V:S-0.3 0
0.0000 0
0.0000 0
0.0000 0
0.0000
-0.3<L'l V:S-0.2 0
0.0000 0
0.0000 0
0.0000 0
0.0000
-0.2<L'l V:S-0.1 18 0.0612 13 0.0327 17 0.0520 48 0.0471
-0.l <llV:S-0.0 33 0.1735 41 0.1357 43 0.1835 117 0.1619 O.O<ll V:SO. l 130 0.6156 198 0.6332 173 0.7125 501 0.6536 0.1 <fl V:S0.2 87 0.9116 127 0.9523 81 0.9602 295 0.9431 0.2<L'l V:S0.3 22 0.9864 16 0.9925 10 0.9908 48 0.9902 0.3<L'l V:S0.4 4
1.0000 3
1.0000 3
1.0000 10 1.0000 0.4<L'l V:S0.5 0
1.0000 0
1.0000 0
1.0000 0
1.0000 0.5<L'l V:S0.6 0
1.0000 0
1.0000 0
1.0000 0
1.0000 0.6<L'lV:S0.7 0
1.0000 0
1.0000 0
1.0000 0
1.0000 0.7<L'l V:S0.8 0
1.0000 0
1.0000 0
1.0000 0
1.0000 Number of Indications with 294 398 327 1019 Growth SG-SGMP-15-22 Revision l January 2016
3-10 Table 3-6 Growth Rate as Function of BOC Voltage Range Number of Average Voltage Average Voltage Voltage Range Indications for Average BOC Growth per Growth per Growth Voltage Cycle18 EFPY Composite Entire Range 1019 0.442
-0.0360
-0.0271 Vboc<0.75 914 0.389
-0.0312
-0.0234 Vboc>0.75 105 0.903
-0.0782
-0.0587 SG-A Entire Range 294 0.416
-0.0314
-0.0236 Vboc<0.75 268 0.369
-0.0259
-0.0194 Vboc>0.75 26 0.897
-0.0881
-0.0662 SG-B Entire Range 398 0.433
-0.0280
-0.0211 Vboc<0.75 362 0.385
-0.0253
-0.0190 Vboc>0.75 36 0.907
-0.0556
-0.0417 SG-C Entire Range 327 0.477
-0.0500
-0.0375 Vboc<0.75 284 0.412
-0.0437
-0.0329 Vboc>0.75 43 0.902
-0.0912
-0.0685 SG-SGMP-15-22 Revision I January 2016
3-11 Table 3-7 Indications with the Largest Growth in Cycle 18 TSP#
EOC-18 EOC-17 C18 Growth,
+Point Probe SG Row Col Volts Volts Volts Tested A
5 26 02H 1.01 0.62 0.39 No c
22 20 02H 1.3 0.94 0.36 No c
7 40 03H 0.73 0.37 0.36 No B
9 52 02H 0.86 0.51 0.35 No A
13 39 05H 0.7 0.38 0.32 No A
5 JO 03H 0.74 0.44 0.30 No A
7 18 03H 0.88 0.59 0.29 No B
5 52 02H 0.89 0.6 0.29 No B
13 77 03H 1.05 0.77 0.28 No c
12 9
02H 0.64 0.37 0.27 No B
30 50 04H 1.01 0.75 0.26 No A
16 70 03H 0.47 0.22 0.25 No A
5 29 02H 1.13 0.89 0.24 Yes B
9 85 02H 0.86 0.63 0.23 No B
30 55 03H 0.63 0.40 0.23 No SG-SGMP-15-22 Revision I January 2016
3-12 2R18 Measured vs. Predicted Voltage Distribution SG A 1111 Measured 1111 Predicted 140 f
120
~ 100 0
u :c 80
.= -
0 60 QI
.sl E
- i 40 z
20 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
1.1 1.2 1.3 1.4 1.5 Voltage Bin Figure 3-1 Measured Bobbin DSI Voltage, 2R18 SG-A SG-SGMP-I 5-22 Revision I January 20 I 6
180 160 140 l5 120 I'll u :c 100
-= -
0 80 QI
..c E
60
- , z 40 20 0
2R18 Measured vs. Predicted Voltage Distribution SG B II Measured 1111 Predicted 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
1.1 1.2 1.3 1.4 1.5 1.6 1.7 Voltage Bin Figure 3-2 Measured Bobbin DSI Voltage, 2R18 SG-B 3-13 SG-SGMP-15-22 Revision 1 January 2016
120 100 UI g 80 nl u :a c
60 0...
QI
.c
~ 40 z
20 0
3-14 2R18 Measured vs. Predicted Voltage Distribution SG C 111 Measured 111!1 Predicted 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
1.1 1.2 1.3 1.4 1.5 1.6 Voltage Bin Figure 3-3 Measured Bobbin DSI Voltage, 2R18 SG-C SG-SGMP-15-22 Revision I January 2016
3-15 Number of Indications vs. Support Number 111 SG A 1111 SG B SG C 200 180 160 c
140 0
111 120
... :c = 100 0..
80 Qj
..c E
60
- s z 40 20 0
02H 03H 04H OSH 06H 07H 08H 04C 06C 08C Support Number Figure 3-4 Number of Measured Bobbin DSI as a Function of TSP SG-SGMP-15-22 Revision I January 2016
c 0
Cycle 18 OSI Bobbin Voltage Growth/EFPV
~CY 17 Bound -t-SG A -SG B '"""*""SG C
~ 0.6 ------------1-11'---I-----------------
~ 0.5 +----------1!1111--#------------------
3 0.4 -+----------
E
- I u 0.3 +---------
-0.4
-0.2 0
0.2 Growth, Volts/EFPY 0.4 Figure 3-5 Voltage Growth during Cycle 18 0.6 3-16 SG-SGMP-15-22 Revision 1 January 2016
3-17 Cycle 18 OSI Bobbin Voltage Growth/EFPY
+ SG A Ill SG B IA SG C ~CY 17 Bound 1.00 0.99 0.98 0.97 c
0
+::
~ 0.96
~ 0.95
+::
ra :i 0.94 E
- J u 0.93 0.92 1111 0.91 0.90 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 Growth, Volts/EFPY Figure 3-6 Expansion of Figure 3-5 at Extreme Voltage Growth during Cycle 18 SG-SGMP-15-22 Revision 1 January 2016
3-18 Growth in Volts in Cycle 18 vs. BOC Volts
+SG A lllSG B SG C 0.8 ~---------------------------
0.6 +-----------------------------
0.4 +----------,-----.-----------:-------------
II
-0.6 +-----------------------------
-0.8 +------.-----~----,.-----.-----.-----r----~--~
0 0.2 0.4 0.6 0.8 BOC Volts 1
1.2 1.4 1.6 Figure 3-7 Voltage Growth in Cycle 18 vs. BOC Voltage SG-SGMP-15-22 Revision 1 January 2016
4-1 4
DATABASE APPLIED FOR LEAK AND BURST CORRELATIONS 4.1 Tube Material Properties The tube material properties are provided in Table 4-1 of Reference 4 for 7 /8-inch diameter tubes at 650°F. The parameters used in the analysis are the flow stress mean (sum of yield and ultimate strengths divided by 2) of 68. 78 ksi and the flow stress standard deviation of 3.1725 ksi.
4.2 Burst Correlation The burst pressure, Pb, is normalized to a material with a flow stress of 68.78 ksi, which is the mean of the Westinghouse 7/8-inch tube data. The actual material property values for Beaver Valley Unit 2 are slightly higher than the average of all Westinghouse data. The correlation parameters shown in Table 4-1 are taken from Reference 4.
4.3 Leak Rate Correlation The steam line break pressure to be applied is 2560 psi unless a lower pressure can be justified.
Therefore, the leak correlation for pressure of 2560 psi from Reference 4 is used for the leakage predictions. The parameters are shown in Table 4-2. The leak rate criterion is given in terms of gallons per minute as condensed liquid at room temperature.
4.4 Probability of Leak Correlation The probability of leak as a function of indication voltage is taken from Reference 4. The parameters are shown in Table 4-3. In the Monte Carlo analysis leakage is quantified only if the indication is computed to be a leaker, based on the probability of leak correlation.
4.5 NDE Uncertainties The NOE uncertainties applied for the EOC-18 and EOC-19 voltage projections are described in Reference 1. The probe wear uncertainty has a standard deviation of 7% about a mean of zero and has a cut-off at 15% based on implementation of the probe wear standard. The analyst variability uncertainty has a standard deviation of 10.3% about a mean of zero with no cut-off.
These NOE uncertainty distributions are used in the Monte Carlo analysis to predict the burst probabilities and accident leak rates at EOC-18 and EOC-19. The voltages reported were adjusted to account for differences between the laboratory standard and the standard used in the field.
4.6 Upper Voltage Repair Limit Per Table 5.4-20 of Reference 12, the BVPS-2 Updated Final Safety Analysis Report (UFSAR),
the pressurizer safety relief valves have a nominal setting of 2485 psig, or the Reactor Coolant System (RCS) design pressure. Applying a 3% allowance for accumulation per Section 2 of to GL 95-05, the applicable SLB conditions pressure differential across the SG tubes is then 2560 psig, which is the traditional pressure differential used for prior GL 95-05 SG-SGMP-15-22 Revision 1 January 2016
4-2 analyses. The upper voltage repair limit of 4.55 volts is based on the structural limit in Table 4-1 for a pressure differential of 2560 psi with a safety factor of 1.4 applied to the differential pressure. The upper voltage repair limit considers the projected voltage growth during the next cycle and NOE uncertainty. The maximum average percentage growth rate as a percentage of BOC voltage values for any steam generator is seen from Table 3-6 to be very small. According to Reference 1, the minimum growth adjustment is 30% per EFPY (45.2% per cycle for the bounding 550 EFPO Cycle 19). Therefore the specific maximum growth value of 45.2% and 20% for NOE uncertainty was used to estimate the upper voltage repair limit. This results in an upper voltage repair limit of 7.51 I (I + 0.452 + 0.20) = 4.55 volts. No indications greater than this voltage were left in service; the largest OSI voltage reported at 2RI 8 was 1.46 volts.
The analysis takes no credit for power operated relief valve (PORV) actuation even though the PORVs, block valves, and associated testing programs have been shown to satisfy the requirements of GL 90-06, as indicated in the NRC Safety Evaluation Report dated May 15, 1995. Crediting the PORV s would effectively increase the upper voltage repair limit by limiting the maximum pressure differential during a postulated SLB event and would reduce the calculated SLB conditions by limiting the maximum pressure differential.
Considering the inspection history of the BVPS2 SGs, it is unlikely that a bobbin coil OSI voltage of>4.5 volts will be observed within the BVPS2 SGs.
SG-SGMP-15-22 Revision 1 January 2016
4-3 Table 4-1 7/8" Tube Burst Pressure vs. Bobbin Amplitude Correlation Parameters Ps = a 0 + a 1 log( Volts )
Parameter Addendum 7 Database Value Intercept, a0 7.4801 Slope, a 1
-2.4002 2
79.67%
Index of Deter., r Std. Deviation, crE
~rror 0.8802 Mean of Log( V) 0.3111 SS of Log( JI) 51.6595 N (data pairs) 100 Str. Limit (2560 psi) <1>
7.51V Str. Limit (2405 psi) 9.40V p Value for a (Z)
I 5.60* 10-36 Reference err 68.78 ksi <3)
Notes: (1)
Values reported correspond to applying a safety factor of 1.4 on the differential pressure associated with a postulated SLB event.
(2)
Numerical values are reported only to demonstrate compliance with the requirement that the value be less than 0.05.
(3)
This is the flow stress value to which all data were normalized prior to performing the regression analysis. This affects the coefficient and standard error values. The corresponding values for a flow stress of75.0 ksi can be obtained from the above values by multiplying by 1.0904.
SG-SGMP-I 5-22 Revision I January 2016
4-4 Table 4-2 Tube Leak Rate vs. Bobbin Amplitude Correlation Parameters Q = 10 [b3 +b4 log (Volts )]
Parameter Addendum 7 Database Value SLB AP = 2560 psi Intercept, b3
-0.33476 Slope, b4 0.95311 Index of Determination, r 2
12.4%
Residuals, CJError (bs) 0.8175 Mean of Log(Q) 0.7014 SS ofLog(Q) 22.8754 p Value for b4 2.4%
SLB AP = 2405 psi Intercept, b3
-0.8039 Slope, b4 1.2077 Index of Determination, r 2
20.0%
Residuals, CJError (bs) 0.7774 Mean of Log(Q) 0.5090 SS ofLog(Q) 22.6667 p Value for b4 0.5%
Common Data Data Pairs, N 32 Mean of Log( V) 1.0871 SS ofLog(V) 3.1116 SG-SGMP-15-22 Revision 1 January 2016
4-5 Table 4-3 718" Tube Probability of Leak Correlation Parameters 1
Pr( Leak)= 1 + e-lb1 +b2 log( Volts )j Parameter Addendum 7 Database Value Logistic Intercept, b1
-4.9847 Logistic Slope, b2 7.6110 Intercept Variance, V11 (tJ 1.2904 Covariance, V12
-1.7499 Slope Variance, V22 2.8 I 81 NumberofData, N 120 Deviance 33.66 Pearson SD 62.9%
MSE 0.285 Note:
(1) Parameters Vu are the elements of the covariance matrix of the coefficients, P;. of the regression equation.
SG-SGMP-I 5-22 Revision I January 2016
5-1 5
SLB ANALYSIS METHODS A Monte Carlo analysis technique is used to calculate the SLB leak rates and tube burst probabilities for both actual 2R 18 and projected EOC-19 voltage distributions. The Monte Carlo analysis accounts for parameter uncertainty. The analysis methodology is described in the Westinghouse generic methods report of Reference 4 as supplemented by References 5 and 6. The Monte Carlo computer program used to implement this method is documented in Reference 9. Essentially the same methodology was applied to leak and burst analyses performed for the original Beaver Valley Unit I SGs, Reference I 0.
In general, the methodology involves application of correlations for burst pressure, probability of leakage and leak rate to a measured or calculated EOC voltage distribution to estimate the likelihood of tube burst and primary-to-secondary leakage during a postulated SLB event.
Uncertainties associated with burst pressure, leak rate probability and leak rate correlations parameters are explicitly included by sampling distributions for the parameter uncertainties through the Monte Carlo sampling process. NDE uncertainties are also included. The voltage distributions used in the leak and burst projections for the next operating cycle are obtained by applying growth data to the BOC distribution. The probability of detection (POD) used to generate the BOC voltage distributions considers both detection uncertainty and the likely occurrence of new indications.
Comparisons of projected EOC voltage distributions with actual distributions after a cycle of operation for a number of plants have shown that the Monte Carlo analysis technique yields conservative estimates for EOC voltage distribution as well as leak and burst results based on those distributions.
SG-SGMP-15-22 Revision 1 January 2016
6-1 6
BOBBIN VOLTAGE DISTRIBUTIONS This section describes the input data used to calculate EOC bobbin voltage distributions and presents results of calculations to project EOC-19 voltage distributions.
6.1 Calculation of Voltage Distributions The analysis for EOC-19 voltage distribution starts with an initial voltage distribution which is projected to the end-of-cycle conditions based on the growth rate and the anticipated cycle operating duration. The number of indications assumed in the analysis to project EOC voltage distributions, SLB leak rates and tube burst probabilities is obtained by adjusting the number of reported indications using a POD, which accounts for both the detection uncertainty and the development of new indications over the projection period. This is accomplished by using a POD factor, which is defined as the ratio of the actual number of indications detected to total number of indications present. A conservative value is assigned to POD based on historic data, and the value used herein is discussed in Section 6.2. The calculation of projected bobbin voltage frequency distribution is based on a net total number of indications returned to service, defined as follows.
NTot RTS =NJ POD - Nrepaired + Ncteplugged
- where, NTot RTS
Number of bobbin indications being returned to service for the next cycle, Ni Number of bobbin indications (in tubes in service) identified by inspection after the previous cycle, POD
Probability of detection, Nrepaired Number ofN which are repaired (plugged) after the last cycle, Ncteplugged Number of indications in tubes deplugged after the last cycle and returned to service in accordance with voltage-based repair criteria.
There are no deplugged tubes returned to service at the beginning of Cycle 19 (BOC-19); therefore, Ndeplugged = 0. Thirteen tubes with 13 indications at the TSP were plugged, therefore Nrepaired = 13.
2R18 RPC "no degradation found" (NDF) indications were included in establishing the BOC-19 indication distributions shown in Table 6-1. During the Monte Carlo simulations, voltages for bins with several indications are selected by randomly sampling the voltage bins. For a few higher voltage indications in each SG, each indication is considered to be in a separate bin, and the actual indication voltage is utilized in the calculations.
The methodology used in the projection of EOC-19 bobbin voltage frequency distributions is described in Reference 3, and it is essentially the same as that used in the original Beaver Valley Unit 1 SGs, Reference l 0.
SG-SGMP-15-22 Revision 1 January 2016
6-2 6.2 Probability of Detection (POD)
The Generic Letter 95-05 (Reference 1) requires the application of a constant POD value of 0.6 to define the BOC distribution for EOC voltage projections unless an alternate POD is approved by the NRC. A POD value of 1.0 represents the ideal situation where all indications are detected. In this report the Reference 1 POD value of 0.6 is used.
6.3 Limiting Growth Rate Distribution As discussed in Section 3.2, the NRC guidelines in Generic Letter 95-05 stipulate that the more conservative growth rate distributions from the past two inspections should be utilized for projecting EOC distributions for the next cycle. For conservatism, a growth rate curve which bounded the growth rates of both cycles was used. Growth distributions used in the Monte Carlo calculations are specified in the form of a histogram, so no interpolation is performed between growth bins. This assures that the largest growth value in the distribution is utilized in the Monte Carlo simulations.
6.4 Cycle Operating Period The operating periods used in the growth rate/EFPY calculations and voltage projections are as follows.
Cycle 18
- 493 EFPD or 1.331 EFPY (actual)
Cycle 19 550 EFPD or 1.506 EFPY (projected) 6.5 Projected EOC-19 Voltage Distribution Calculations for the EOC-19 bobbin voltage projections were performed for all three SGs based on the 2R18 distributions shown in Table 6-1. The BOC-19 distributions were adjusted to account for probability of detection as described above, and the adjusted number of indications at BOC-19 is also shown in Table 6-1. Calculations were performed using a constant POD of 0.6 and 1,000,000 Monte Carlo trials. The distribution of indications at BOC-19 and the distribution of indications projected to EOC-19 are shown in Figures 6-1, 6-2, and 6-3 for SG-A, SG-B, and SG-C, respectively. SG-B has the largest number of indications at BOC-19. Reporting the maximum predicted voltage is not required by GL 95-05, but it is arbitrarily chosen to be the voltage where the integration of the upper tail of the voltage distribution reaches a 0.3 fractional indication.
SG-SGMP-15-22 Revision I January 2016
6-3 Table 6-1 Predicted Voltage Distribution at EOC-19 SG-A Number of Indications SG-B Number of Indications SG-C Number of Indications Volt Bins Measured In out Predicted Measured In out Predicted Measured In out Predicted EOC-18 BOC-19 EOC-19 EOC-18 BOC-19 EOC-19 EOC-18 BOC-19 EOC-19 0.1 4
6.67 3.04 6
10 4.36 3
5 2.64 0.2 47 78.33 26.22 62 103.33 35.09 50 83.33 26.46 0.3 81 135 63.46 109 181.67 83.79 71 118.33 60.94 0.4 60 100 85.29 66 110 109.60 59 98.33 79.99 0.5 44 73.33 84.39 63 105 108.43 44 73.33 82.67 0.6 24 40 72.57 46 76.67 100.87 35 58.33 76.44 0.7 14 23.33 54.53 31 51.67 82.44 30 50 65.28 0.8 7
11.67 38.39 12 20 60.75 17 28.33 52.16 0.9 13 21.67 26.42 10 16.67 41.30 14 23.33 38.43 1
2 3.33 17.74 5
8.33 26.84 2
3.33 26.13 1.1 2
3.33 11.40 5
8.33 17.09 3
5 16.4 1.2 2
3.33 7.14 2
3.34 10.58 0
9.54 l.3 l
1.67 4.51 0
0 6.32 4
5.13 1.4 2.82 0
0 3.65 2.54 l.5 1.71 1
1.67 2.00 0.91 1.6 0.98 0.89 0
l.7 0.05 0
0.7 1.8 0.70 0.7 0.3 1.9 0.30 0.3 2
Total 301 502 502 418 697 697 332 547 547 SG-SGMP-15-22 Revision l January 2016
160 140
"' 120 c
0
- ~ 100 u
c 80 0...
~ 60 E
- I z 40 20 0
2R19 Predicted Voltage Distribution SG A 1!11'1 EOC-19 111 BOC-19 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2
Voltage Bin Figure 6-1 Predicted Voltage Distribution at EOC-19, SG-A 6-4 SG-SGMP-15-22 Revision l January 2016
200 180 160
~ 140 0
- .;::; G 120
- a c
- 100 0...
~ 80 E
- s z 60 40 20 0
2R19 Predicted Voltage Distribution SG B lllll EOC-19 1111 BOC-19 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2
Voltage Bin Figure 6-2 Predicted Voltage Distribution at EOC-19, SG-B 6-5 SG-SGMP-15-22 Revision 1 January 2016
140 120
~ 100 0
I'll
- ij 80 c
lii 60
.J:I E
- I z 40 20 0
2R19 Predicted Voltage Distribution SG C II EOC-19 1111 BOC-19 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2
Voltage Bin Figure 6-3 Predicted Voltage Distribution at EOC-19, SG-C 6-6 SG-SGMP-15-22 Revision 1 January 2016
7-1 7
SLB LEAK RATE AND TUBE BURST PROBABILITY ANALYSES This section presents the results of the analyses carried out to predict leak rates and tube burst probabilities at the postulated SLB conditions using the actual voltage distributions from the 2R 18 inspection (condition monitoring assessment) as well as for the projected EOC-19 voltage distributions (operational assessment). The methodology used in these analyses is described in Section 6.
7.1 2R18 Condition Monitoring Leak Rate and Tube Burst Probability Analyses to calculate the 2Rl 8 SLB leak rates and tube burst probabilities were performed using the actual bobbin voltage distributions presented in Tables 3-1 to 3-3. The results of the Monte Carlo calculations are summarized in Table 7-1.
The SLB leak rates and tube burst probabilities, calculated using the actual measured 2Rl 8 voltage distributions using 1,000,000 Monte Carlo trials, are shown in Table 7-1. The methodology used for these calculations is documented in WCAP-14277, Rev. 1. The probability of leak, leak rate and burst pressure correlations for 7 /8 inch tubes presented in the latest addendum to the EPRI Alternate Repair Criteria (ARC) Database, Reference 3, were used. The SLB primary-to-secondary pressure differential applied in the analysis is 2560 psi. The maximum 2R 18 leak rate of 0.0617 gpm and the maximum conditional burst probability of 1.57 x 10-5 are well below their respective allowable limits (2.2 gpm per Reference 11, and 1.0 x 10-2 per Reference 1, respectively). Therefore, the condition monitoring performance criteria are satisfied.
7.2 Cycle 19 Operational Assessment Leak Rate and Tube Burst Probability The SLB leak rate and tube burst probability projection for the Cycle 19 operational assessment was carried out using the latest update to the ARC database documented in Reference 4, the POD of 0.60, and 1,000,000 Monte Carlo trials. The EOC-19 leak and burst analyses were performed using a primary-to-secondary pressure differential of 2560 psi, even though it is likely that PORV actuation will occur prior to the pressurizer safety relief valve lift setting.
The EOC-19 projections, considering a 550 EFPD operation cycle, using POD = 0.6 are shown in Table 7-2. Both the maximum projected EOC-19 leak rate of 0.303 gpm and the maximum conditional burst probability of 3.61 x 10-5 are well below their respective allowable limits (2.2 gpm and 1.0 x 10-2, respectively). Therefore, the operational assessment performance criteria for the OSI indications are satisfied for Cycle 19.
SG-SGMP-15-22 Revision I January 2016
7-2 Table 7-1 Condition Monitoring Leak and Burst Results for 2R18 Number of Maximum Probability of 1 or SLB Leak Rate Indications at Volts at More Burst at at 95/95 EOC-18 EOC-18 95% Confidence (gpm)
SG-A 301 1.23 1.05 x 10-5 0.0394 SG-B 418 1.46 1.57 x 10-5 0.0617 SG-C 332 1.3 7.75 x 10-6 0.0485 Table 7-2 Operational Assessment Leak and Burst Results for EOC-19 (POD= 0.6)
Growth Rate Number of SLB Leak Rate Maximum Volts Probability of 1 Used in Indications at at 95/95 Projection EOC-19 at EOC-19 or More Burst (gpm)
SG-A Cycle 17 Bound 502 1.9 2.67 x 10-)
0.195 SG-B Cycle 17 Bound 697 1.9 3.61 x 10-5 0.303 SG-C Cycle 17 Bound 547 1.8 3.14 x 10-5 0.236 Note: The growth rate for Cycle 17 bounds the growth rate observed during Cycle 18.
SG-SGMP-15-22 Revision I January 20 I 6
8-1 8
REFERENCES I.
NRC Generic Letter 95-05, "Voltage-Based Repair Criteria for Westinghouse Steam Generator Tubes Affected by Outside Diameter Stress Corrosion Cracking," USNRC Office of Nuclear Reactor Regulation, August 3, 1995.
- 2.
Westinghouse Report, SG-SGMP-14-17, Rev. I, "Beaver Valley Unit 2 End-of-Cycle 17 Analysis and Prediction for End-of-Cycle 18 Voltage-Based Repair Criteria 90-Day Report," July 2014.
- 3.
WCAP-14277, Revision I, "SLB Leak Rate and Tube Burst Probability Analysis Methods for ODSCC at TSP Intersections,"
Westinghouse Nuclear Services
- Division, December 1996.
- 4.
EPRI Report 1018047, Addendum 7 to NP-7480-L Database, "Steam Generator Tubing Outside Diameter Stress Corrosion Cracking at Tube Support Plates Database for Alternate Repair Limits," September 2008.
- 5.
Letter from A. Marion, Nuclear Energy Research Institute, to B. Sheron, Nuclear Regulatory Commission, "Refining the Leak Rate Sampling Methodology for ODSCC ARC Applications (Generic Letter 95-05)," March 15, 2002.
- 6.
Letter from W. Bateman, Nuclear Regulatory Commission, to A. Marion, Nuclear Energy Research Institute, "Refining the Leak Rate Sampling Methodology for Generic Letter 95-05 Voltage-Based Alternate Repair Criteria Application," March 27, 2002.
- 7.
Westinghouse Letter DLC-96-184, "Duquesne Light Company Beaver Valley Power Station Unit 2 Steam Generator LOCA Plus SSE Loads," June 17, 1996.
- 8.
Letter from B.W. Sheron, Nuclear Regulatory Commission, to A. Marion, Nuclear Energy Research Institute, February 9, 1996.
- 9.
Westinghouse Letter LTR-CDME-08-167, "Software Release Letter for CycleSim Version 3.2," July 30, 2008.
- 10.
Westinghouse Report SG-SGDA-05-1, Rev. I, "Beaver Valley Unit I Cycle 17 Voltage-Based Repair Criteria 90-Day Report," January 2005.
- 11.
FENOC Letter BVTS-0109, "2Rl6 Steam Generator 90 Day Alternate Repair Criteria Report Input Data Validation," January 2, 2013.
- 12.
Beaver Valley Power Station Unit 2, Updated Final Safety Analysis Report, Revision 20.
SG-SGMP-I 5-22 Revision I January 20 I 6
A-1 APPENDIX A Table A-1: DSI Indications for 2R18 in SG-A SG Row Col Locn 2R18 Comment Volts 2A 2
24 07H 0.52 SAI 2A 2
88 02H 0.29 2A 2
92 03H 0.33 2A 3
15 03H 0.8 2A 3
59 02H 0.58 2A 3
65 07H 0.66 2A 3
77 08H 0.41 SAI 2A 3
79 07H 0.39 2A 3
81 03H 0.83 2A 3
84 03H 0.59 2A 3
85 04H 0.7 2A 3
92 02H 0.27 2A 4
9 03H 0.71 2A 4
9 04H 0.48 2A 4
18 05H 0.19 2A 4
21 03H 0.65 2A 4
24 02H 0.41 2A 4
26 02H 0.37 2A 4
34 03H 0.25 2A 4
39 02H 0.25 2A 4
50 02H 0.36 2A 4
50 03H 0.83 2A 4
50 04H 0.49 2A 4
54 02H 0.58 2A 4
54 04H 0.46 2A 4
54 05H 0.46 2A 4
60 02H 0.2 2A 4
60 06H 0.34 2A 4
63 02H 0.55 2A 4
78 05H 0.27 2A 4
85 08C 0.28 2A 5
10 02H 1.15 2A 5
10 03H 0.74 2A 5
10 04H 0.51 2A 5
11 04H 0.37 2A 5
25 05H 0.71 SG-SGMP-15-22 Revision 1 January 2016
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I SG 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A SG-SGMP-I 5-22 Revision I Row Col 5
26 5
26 5
29 5
30 5
53 5
80 5
82 6
15 6
27 6
32 6
34 6
35 6
35 6
35 6
35 6
40 6
40 6
41 6
43 7
14 7
18 7
18 7
19 7
27 7
49 7
51 7
58 7
71 7
94 8
19 8
28 8
29 8
32 8
32 8
34 8
42 8
69 8
76 8
85 A-2 Locn 2R18 Comment Volts 02H 1.01 03H 0.89 02H 1.13 SAI 03H 0.43 02H 0.23 05H 0.26 03H 0.44 02H 0.39 06H 0.2 02H 0.2 02H 0.28 02H 0.78 03H 0.49 05H 0.44 08H 0.29 03H 0.33 04H 0.26 08H 0.21 SAI 02H 0.65 03H 0.34 03H 0.88 05H 0.37 03H 0.46 05H 0.34 02H 0.18 02H 0.27 03H 0.43 03H 0.23 02H 0.25 02H 0.36 02H 0.33 02H 0.26 03H 0.32 05H 0.83 SAI 03H 1.03 02H 0.28 02H 0.17 05H 0.19 02H 0.1 January 20 I 6
A-3 SG Row Col Locn 2Rl8 Comment Volts 2A 8
91 04H 0.51 2A 9
10 02H 0.85 2A 9
13 02H 0.53 2A 9
14 03H 0.2 2A 9
16 02H 0.54 2A 9
16 03H 0.66 2A 9
16 04H 0.56 2A 9
34 02H 0.23 SAI 2A 9
35 02H 0.31 2A 9
38 05H 0.83 2A 9
40 03H 0.36 2A 9
51 04H 0.61 SAI 2A 9
56 02H 0.24 2A 9
56 04H 0.5 2A 9
57 02H 0.18 2A 9
57 03H 0.65 2A 9
74 03H 0.15 2A 10 7
02H 0.85 2A 10 7
03H 0.29 2A 10 8
03H 0.3 2A 10 19 04H 0.36 2A 10 26 04H 0.2 2A 10 37 03H 0.13 2A 11 2
03H 0.56 2A 11 48 02H 0.9 2A 11 48 08H 0.4 2A 11 77 05H 0.51 2A 11 78 06H 0.39 2A 12 34 02H 0.25 2A 12 48 05H 0.31 2A 12 69 03H 0.39 2A 12 70 03H 0.47 2A 12 72 02H 0.25 2A 12 73 05H 0.17 2A 12 74 02H 0.41 2A 12 74 03H 0.58 2A 13 32 02H 0.33 2A 13 39 05H 0.7 2A 13 49 04H 0.14 SG-SGMP-15-22 Revision I January 2016
A-4 SG Row Col Locn 2Rl8 Comment Volts 2A 13 60 02H 0.46 2A 13 67 06C 0.3 2A 13 71 04H 0.41 2A 13 80 03H 0.24 2A 13 84 02H 0.53 2A 13 85 02H 0.61 2A 13 86 03H 0.4 2A 13 91 05H 0.51 2A 13 92 04H 0.45 2A 14 15 04H 0.22 2A 14 20 03H 0.27 2A 14 25 05H 0.31 2A 14 27 05H 0.28 2A 14 31 02H 0.17 2A 14 40 05H 0.28 SAi 2A 14 48 05H 0.34 2A 14 50 03H 0.25 2A 14 53 02H 0.17 2A 14 54 02H 0.48 2A 14 58 02H 0.32 2A 14 59 02H 0.14 2A 14 59 03H 0.24 2A 14 59 06H 0.44 2A 14 65 03H 0.38 2A 14 68 02H 0.34 2A 14 70 03H 0.78 2A 14 80 03H 0.21 2A 14 86 04H 0.5 2A 15 27 05H 0.21 2A 15 63 02H 0.4 2A 15 67 02H 0.31 2A 15 71 02H 0.2 2A 15 72 02H 0.38 2A 15 73 03H 0.7 2A 15 73 05H 0.31 2A 15 74 03H 0.95 2A 15 75 02H 0.47 2A 15 75 08H 0.27 SAI 2A 16 11 05H 0.15 SAi SG-SGMP-15-22 Revision I January 2016
A-5 SG Row Col Locn 2R18 Comment Volts 2A 16 52 02H 0.49 2A 16 53 03H 0.35 2A 16 62 08H 0.12 2A 16 66 03H 0.42 2A 16 70 03H 0.47 2A 16 72 02H 0.19 2A 16 76 02H 0.37 2A 16 77 05H 0.13 2A 17 10 03H 0.23 2A 17 27 04H 0.25 2A 17 32 05H 0.51 2A 17 46 02H 0.81 2A 17 59 02H 0.27 2A 17 59 05H 0.14 2A 17 81 03H 0.27 2A 17 81 04H 0.24 2A 17 84 03H 0.26 2A 18 7
04H 0.17 2A 18 10 03H 0.6 2A 18 10 04H 0.19 2A 18 27 07H 0.21 2A 18 47 02H 0.24 2A 18 47 05H 0.4 2A 18 57 02H 0.67 2A 18 88 05H 0.14 2A 19 7
02H 0.56 2A 19 7
03H 0.31 SAi 2A 19 8
03H 0.37 2A 19 15 03H 0.27 2A 19 15 04H 0.22 2A 19 56 03H 0.25 2A 19 57 02H 0.65 2A 19 57 04H 0.23 2A 19 60 02H 0.11 2A 20 9
03H 0.22 2A 20 10 04H 0.31 2A 20 12 02H 0.29 2A 20 22 02H 0.32 2A 20 22 03H 0.4 SG-SGMP-15-22 Revision 1 January 2016
A-6 SG Row Col Loco 2R18 Comment Volts 2A 20 22 08H 0.27 2A 20 57 02H 0.11 2A 20 62 05H 0.49 2A 20 75 05H 0.2 2A 20 78 04H 0.16 2A 20 85 03H 0.16 2A 21 18 04H 0.39 2A 21 25 03H 0.18 2A 21 26 05H 0.42 2A 21 34 02H 0.3 2A 21 43 02H 0.1 2A 21 46 02H 0.22 2A 21 55 02H 0.14 2A 21 72 03H 0.48 2A 21 73 03H 0.8 2A 21 78 08H 0.1 2A 22 7
02H 0.38 2A 22 21 02H 0.19 2A 22 21 03H 0.19 2A 22 23 02H 0.19 2A 22 25 02H 0.26 2A 23 11 02H 0.9 2A 23 11 03H 0.24 2A 23 19 02H 0.89 2A 23 20 02H 0.23 2A 23 21 03H 0.17 2A 23 53 02H 0.45 SAi 2A 23 87 04H 0.34 2A 24 16 02H 0.27 2A 24 16 03H 0.11 2A 24 23 05H 0.65 SAI 2A 24 24 02H 0.27 2A 24 33 03H 0.26 2A 24 52 02H 0.21 2A 24 63 05H 0.34 2A 25 21 02H 0.12 2A 25 22 02H 0.46 2A 25 30 04H 0.46 2A 26 15 03H 0.17 SG-SGMP-15-22 Revision 1 January 2016
A-7 SG Row Col Locn 2R18 Comment Volts 2A 26 19 04H 0.28 2A 26 42 02H 0.34 2A 26 80 05H 0.22 2A 27 32 02H 0.34 2A 27 33 03H 0.57 2A 27 34 04H 0.25 2A 27 42 04H 0.23 SAi 2A 27 42 05H 0.22 2A 27 47 02H 0.45 2A 27 64 02H 0.19 2A 27 75 05H 0.28 2A 28 13 03H 0.3 2A 28 26 04H 0.34 2A 28 41 02H 0.33 2A 28 45 02H 0.42 2A 28 46 03H 0.36 2A 28 54 02H 0.22 2A 28 56 03H 0.5 2A 28 66 04H 0.1 SAi 2A 29 24 04H 0.39 2A 29 54 03H 0.29 MAI 2A 29 65 02H 0.33 2A 30 19 02H 0.31 2A 30 22 02H 0.45 2A 30 28 03H 0.26 2A 30 38 02H 0.12 2A 30 58 04H 0.31 2A 30 63 08H 0.23 2A 30 68 02H 0.36 2A 31 14 04H 0.25 2A 31 18 02H 0.92 2A 31 18 03H 0.42 2A 32 22 02H 0.36 2A 32 27 03H 0.3 2A 32 38 03H 0.26 2A 32 45 02H 0.54 2A 32 51 05H 0.25 2A 32 53 03H 0.39 2A 33 18 02H 0.19 SG-SGMP-15-22 Revision 1 January 2016
A-8 SG Row Col Locn 2R18 Comment Volts 2A 33 18 03H 0.34 2A 33 42 05H 0.23 2A 33 45 07H 0.25 2A 33 54 06H 0.23 2A 33 57 04H 0.44 2A 33 66 02H 0.55 2A 34 52 02H 0.28 2A 34 53 02H 0.42 2A 34 56 05H 0.54 2A 35 45 02H 0.53 2A 36 28 03H 0.48 2A 36 28 04H 0.14 2A 36 44 03H 0.32 2A 36 46 06H 0.21 2A 37 39 03H 0.37 2A 37 42 03H 0.42 2A 37 54 05H 0.2 2A 37 56 02H 0.3 2A 37 56 03H 0.61 2A 38 40 05H 0.35 2A 38 44 02H 0.42 2A 39 23 02H 1.23 2A 39 42 02H 0.58 2A 39 46 02H 0.49 2A 39 57 03H 0.24 2A 40 37 03H 0.82 2A 40 44 06C 0.19 2A 42 64 04H 0.5 2A 44 35 03H 0.5 2A 44 58 06H 0.13 2A 46 52 06H 0.29 SG-SGMP-15-22 Revision I January 2016
A-9 Table A-2: DSI Indications for 2R18 in SG-B SG Row Col Locn 2Rl8 Comment Volts 2B 1
43 02H 0.47 2B 1
52 02H 0.19 2B 1
56 02H 0.28 28 1
57 04H 0.72 2B 2
24 02H 0.43 2B 2
28 02H 0.61 2B 2
54 04H 0.24 28 2
62 03H 0.58 2B 2
63 04H 0.32 2B 2
67 06H 0.26 2B 2
70 05H 0.77 28 2
73 03H 0.43 28 2
73 04H 0.38 2B 2
94 04H 0.46 2B 3
32 03H 0.29 2B 3
54 02H 0.38 2B 3
55 02H 0.63 28 3
60 02H 0.58 2B 3
60 03H 0.57 28 3
61 06H 0.27 2B 3
62 03H 0.41 2B 3
62 04H 0.29 28 3
63 02H 0.66 2B 3
63 03H 0.53 2B 3
72 03H 0.58 28 3
88 04H 0.6 2B 3
89 04H 0.45 2B 4
23 02H 0.32 2B 4
23 06H 0.28 2B 4
32 03H 0.13 2B 4
36 04H 0.1 SAI 2B 4
41 04H 0.25 2B 4
43 02H 0.2 2B 4
44 02H 0.41 2B 4
48 03H 0.46 2B 4
52 03H 0.58 2B 4
54 02H 0.53 2B 4
56 04H 0.22 SG-SGMP-15-22 Revision 1 January 2016
A-10 SG Row Col Locn 2R18 Comment Volts 28 4
57 02H 0.38 28 4
57 04H 0.2 28 4
58 02H 0.35 28 4
59 02H 0.49 28 4
59 03H 0.25 28 4
63 04H 0.57 28 5
10 02H 0.62 28 5
12 03H 0.23 28 5
14 03H 0.58 28 5
20 03H 0.35 28 5
22 04H 0.47 28 5
28 02H 0.62 28 5
52 02H 0.89 28 5
54 02H 0.28 28 5
54 03H 0.23 28 5
56 03H 0.53 28 5
58 02H 0.21 28 5
60 02H 0.31 28 5
63 04H 0.16 28 5
64 02H 0.43 28 5
64 03H 0.39 28 5
68 02H 0.49 28 5
71 02H 0.5 28 5
73 02H 0.43 28 5
75 04H 0.17 28 5
81 05H 0.24 28 5
92 02H 0.5 28 5
93 03H 0.33 28 6
16 03H 0.26 28 6
23 04H 0.25 28 6
26 02H 0.25 28 6
27 03H 0.29 SAi 28 6
52 02H 0.12 28 6
53 02H 0.35 28 6
53 03H 0.06 28 6
58 02H 0.56 28 6
61 08H 0.16 28 6
63 02H 0.2 28 6
66 03H 1.15 SG-SGMP-15-22 Revision I January 2016
A-11 SG Row Col Locn 2R18 Comment Volts 2B 6
70 05H 0.56 2B 7
52 02H 0.7 2B 7
54 02H 0.07 2B 7
56 02H 0.58 2B 7
56 06C 0.15 2B 7
63 07H 0.34 2B 7
70 04H 0.72 2B 7
70 05H 0.3 2B 7
75 02H 0.14 2B 8
2 03H 0.2 2B 8
9 02H 0.44 2B 8
9 03H 0.28 2B 8
18 02H 0.49 2B 8
18 03H 0.51 2B 8
20 02H 0.25 2B 8
22 02H 0.17 2B 8
37 03H 0.41 2B 8
53 02H 0.7 2B 8
56 03H 0.38 2B 8
57 08H 0.2 2B 8
59 02H 0.41 2B 9
4 03H 0.34 SAI 2B 9
5 03H 0.27 2B 9
8 03H 0.22 2B 9
11 02H 0.58 2B 9
11 03H 0.39 2B 9
16 03H 0.19 2B 9
17 02H 0.53 2B 9
17 03H 0.36 2B 9
18 02H 0.34 2B 9
18 03H 0.5 2B 9
26 02H 0.46 2B 9
26 03H 0.78 2B 9
52 02H 0.86 2B 9
52 03H 0.33 2B 9
59 03H 0.59 2B 9
59 05H 0.28 2B 9
64 04H 0.74 SAI 2B 9
72 04H 0.65 SG-SGMP-15-22 Revision 1 January 2016
A-12 SG Row Col Locn 2R18 Comment Volts 2B 9
80 02H 0.53 2B 9
85 02H 0.86 28 9
92 02H 0.43 2B 9
93 02H 0.29 28 10 6
02H 0.58 2B 10 10 02H 0.17 2B 10 14 02H 0.43 28 10 15 02H 0.36 28 10 17 02H 0.39 2B 10 18 02H 0.57 2B 10 26 02H 0.59 28 10 37 03H 0.21 2B 10 41 07H 0.35 2B 10 50 02H 0.3 2B 10 50 03H 0.35 28 10 52 02H 1.17 2B 10 52 04H 0.38 2B 10 53 02H 0.35 2B 10 54 02H 0.46 2B 10 56 02H 0.25 28 10 58 05H 0.29 2B 10 63 02H 0.44 28 10 71 05H 0.38 2B 10 78 04H 0.26 2B 10 80 03H 0.24 28 10 82 03H 0.31 28 10 88 04C 0.14 2B 10 89 02H 0.38 28 11 8
03H 0.24 2B 11 8
04H 0.14 2B 11 9
06H 0.15 28 11 9
07H 0.28 2B 11 18 02H 0.58 2B 11 20 02H 0.52 28 11 21 03H 0.3 2B 11 25 03H 0.44 SAI 28 11 35 02H 0.14 28 11 42 03H 0.19 28 11 53 02H 0.37 SG-SGMP-15-22 Revision 1 January 2016
A-13 SG Row Col Locn 2Rl8 Comment Volts 2B 11 53 08C 0.33 2B 11 57 03H 0.24 2B 11 58 03H 0.4 2B 11 58 04H 0.23 2B 11 61 02H 1
2B 11 61 03H 0.68 2B 11 64 03H 0.48 2B 11 75 02H 0.86 2B 11 75 03H 0.44 2B 11 83 03H 0.26 2B 11 83 04H 0.43 2B 12 10 02H 0.56 2B 12 15 02H 0.29 2B 12 15 03H 0.59 2B 12 16 03H 0.13 2B 12 22 02H 0.47 2B 12 24 02H 0.38 2B 12 24 04H 0.25 2B 12 51 02H 0.13 2B 12 52 02H 0.26 2B 12 52 03H 0.65 2B 12 61 03H 0.97 2B 13 16 02H 0.68 plug 2B 13 16 03H 0.18 plug 2B 13 16 06H 0.41 plug 2B 13 37 03H 0.34 2B 13 39 07H 0.13 2B 13 47 02H 0.24 SAi 2B 13 53 02H 0.68 2B 13 56 03H 0.31 2B 13 73 02H 0.39 2B 13 77 03H 1.05 2B 13 78 02H 0.1 2B 13 85 02H 0.26 2B 13 86 02H 0.16 2B 13 91 02H 0.34 2B 14 8
03H 0.2 2B 14 13 02H 0.48 2B 14 15 03H 0.5 SG-SGMP-15-22 Revision 1 January 2016
A-14 SG Row Col Loco 2R18 Comment Volts 2B 14 18 02H 0.48 2B 14 25 02H 0.51 2B 14 27 03H 0.27 2B 14 28 05H 0.22 2B 14 32 02H 0.31 2B 14 35 06H 0.26 2B 14 36 03H 0.25 28 14 39 02H 0.07 2B 14 54 02H 0.64 28 14 54 03H 0.56 2B 14 57 02H 0.48 2B 14 57 03H 0.52 2B 14 61 02H 0.21 2B 14 61 03H 0.63 2B 14 61 05H 0.48 2B 14 63 03H 0.65 2B 14 70 02H 0.53 2B 14 84 04H 0.36 2B 14 88 02H 0.23 2B 15 12 03H 0.14 2B 15 26 03H 0.39 2B 15 26 07H 0.27 2B 15 27 02H 0.27 28 15 36 02H 0.24 2B 15 51 02H 0.24 SAi, plug 28 15 52 02H 0.61 2B 15 71 05H 0.47 2B 15 75 02H 0.22 2B 15 75 04H 0.27 2B 15 80 04H 0.4 2B 15 87 02H 0.23 2B 15 89 02H 0.34 28 16 27 03H 0.48 2B 16 29 02H 0.17 SAI 28 16 31 02H 0.3 2B 16 31 07H 0.19 2B 16 37 02H 0.35 28 16 37 04H 0.2 SAI 28 16 44 02H 0.46 SG-SGMP-15-22 Revision I January 2016
A-15 SG Row Col Locn 2R18 Comment Volts 2B 16 55 05H 0.32 2B 16 61 02H 0.38 2B 16 71 02H 0.17 2B 17 35 03H 0.53 2B 17 42 03H 0.62 2B 17 42 04H 0.46 2B 17 44 02H 0.29 SAI 2B 17 64 02H 0.13 2B 17 68 02H 0.66 2B 17 68 03H 0.39 2B 17 68 04H 0.76 SAi 2B 17 83 06C 0.12 2B 18 12 03H 0.25 2B 18 18 02H 0.17 2B 18 28 04H 0.41 2B 18 29 02H 0.81 2B 18 30 04H 0.23 2B 18 36 03H 0.94 2B 18 37 03H 0.53 2B 18 38 03H 0.61 2B 18 42 02H 0.3 2B 18 53 03H 0.5 2B 18 53 04H 0.2 2B 18 54 02H 0.95 2B 18 57 03H 0.12 2B 18 58 02H 0.54 2B 18 61 03H 0.4 2B 18 64 03H 0.44 2B 18 69 05H 0.47 2B 18 76 03H 0.36 2B 19 15 02H 0.25 2B 19 15 04H 0.19 2B 19 29 02H 0.9 2B 19 29 03H 0.97 2B 19 36 02H 0.9 2B 19 39 03H 0.67 2B 19 39 04H 0.47 2B 19 40 03H 0.45 2B 19 45 02H 0.37 SG-SGMP-15-22 Revision 1 January 2016
A-16 SG Row Col Loco 2R18 Comment Volts 28 19 50 03H 0.64 28 19 51 02H 0.68 28 19 51 03H 0.58 28 19 69 02H 0.77 28 19 71 05H 0.57 28 19 74 02H 0.13 28 19 76 02H 0.51 28 19 78 02H 0.26 28 19 85 02H 0.14 28 20 11 02H 1.09 28 20 16 03H 0.43 28 20 19 04H 0.1 28 20 23 02H 0.17 SAi 28 20 70 02H 0.14 28 20 81 02H 0.27 28 20 89 02H 0.5 28 21 45 04H 0.34 28 21 53 03H 0.46 28 21 53 05H 0.22 28 21 54 02H 1.46 28 21 75 02H 0.18 28 22 12 03H 0.13 28 22 18 03H 0.7 SAi 28 22 36 03H 0.24 28 22 52 02H 0.22 28 22 52 03H 0.27 28 22 53 02H 0.15 28 22 61 05H 0.21 28 22 62 03H 0.48 28 22 64 02H 0.52 28 23 33 03H 0.39 28 23 37 04H 0.68 SAi 28 23 56 02H 0.26 28 23 61 02H 0.3 28 23 63 03H 0.29 28 23 63 05H 0.2 28 23 67 05H 0.22 28 23 86 02H 0.22 28 24 29 05H 0.29 SG-SGMP-I 5-22 Revision I January 2016
A-17 SG Row Col Loco 2Rl8 Comment Volts 2B 24 30 03H 0.3 I 2B 24 32 03H 0.29 2B 24 42 02H 0.87 2B 24 51 08H 0.73 2B 24 52 02H 0.54 2B 24 56 02H 0.34 2B 24 58 03H 0.26 2B 24 62 03H 0.54 2B 24 63 03H 0.5 28 24 65 02H 0.16 28 24 68 08H 0.17 2B 24 71 05H 0.23 2B 24 84 05H 0.26 28 25 17 02H 0.13 2B 25 24 03H 0.46 28 25 29 02H 0.23 2B 25 64 06H 0.42 28 25 79 08H 0.38 28 26 30 03H 0.62 2B 26 39 03H 0.15 28 26 78 02H 0.35 2B 27 46 06H 0.26 28 27 52 04H 0.54 28 27 53 03H 0.27 28 27 68 02H 0.23 28 28 41 02H 0.28 28 28 63 03H 0.27 28 28 67 03H 0.29 28 28 81 02H 0.16 28 29 20 03H 0.57 28 29 27 03H 0.58 2B 29 31 05H 0.26 28 29 32 03H 0.14 28 29 32 05H 0.26 28 29 34 03H 0.38 2B 29 35 04H 0.34 SAI 28 29 37 03H 0.65 2B 29 38 02H 0.44 MAI 28 29 40 03H 0.82 SG-SGMP-15-22 Revision 1 January 2016
A-18 SG Row Col Locn 2Rl8 Comment Volts 28 29 41 02H 0.41 2B 29 56 02H 1.08 28 30 16 04H 0.21 28 30 20 04H 0.19 28 30 27 02H 0.34 28 30 32 03H 0.19 28 30 50 04H 1.01 28 30 55 03H 0.63 28 30 59 04H 0.23 28 30 78 02H 0.34 28 30 78 04H 0.28 28 30 79 02H 0.31 28 30 81 03H 0.29 28 31 21 07H 0.24 28 31 23 02H 0.79 2B 31 32 03H 0.41 28 31 32 05H 0.33 28 31 37 03H 0.51 28 31 39 02H 0.17 28 31 39 03H 0.6 28 31 48 02H 0.75 28 31 52 02H 0.64 28 31 71 05H 0.23 28 31 76 02H 0.44 28 31 78 02H 0.38 28 31 78 03H 1.04 28 32 16 08H 0.28 2B 32 29 05H 0.23 28 32 31 02H 0.33 SAi 28 32 53 02H 0.74 28 32 55 02H 0.63 28 32 55 05H 0.22 28 32 61 02H 0.27 28 32 61 05H 0.43 28 32 77 02H 0.37 28 33 31 07H 0.41 28 33 32 02H 0.13 28 33 37 04H 0.17 28 33 44 02H 0.43 SG-SGMP-15-22 Revision 1 January 2016
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SG 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B SG-SGMP-I 5-22 Revision I Row Col 33 62 34 18 34 32 34 35 34 37 34 48 34 48 34 48 34 51 34 51 34 57 35 40 36 25 36 42 36 58 37 24 37 32 37 57 37 57 38 35 38 63 39 31 39 33 40 31 40 42 41 31 41 52 42 51 44 48 A-19 Locn 2Rl8 Comment Volts 02H 0.86 08H 0.14 02H 0.24 03H 0.28 03H 0.43 02H 0.52 SAi 03H 0.5 04H 0.28 02H 0.8 03H 0.41 02H 0.3 02H 0.31 05H 0.33 03H 0.24 05H 0.24 05H 0.11 03H 0.61 02H 0.35 05H 0.15 02H 0.55 03H 0.2 05H 0.22 03H 0.29 05H 0.2 02H 0.36 05H 0.27 08C 0.25 04H 0.25 02H 0.61 January 2016
A-20 Table A-3: DSI Indications for 2R18 in SG-C SG Row Col Locn 2R18 Comment Volts 2C 2
78 03H 0.18 2C 2
80 03H 0.19 2C 2
85 03H 0.42 2C 3
8 04H 0.36 2C 3
9 06H 0.19 2C 3
18 03H 0.32 2C 3
35 05H 0.21 2C 3
39 07H 0.37 2C 3
45 02H 0.7 2C 3
58 02H 0.42 2C 3
60 02H 0.52 2C 3
60 03H 0.34 2C 3
64 02H 0.21 2C 3
64 03H 0.61 2C 3
80 02H 0.54 2C 3
90 06H 0.35 2C 3
93 04H 0.34 2C 4
3 04H 0.32 2C 4
26 03H 0.85 2C 4
33 02H 0.4 2C 4
39 07H 0.51 SAi 2C 4
48 02H 0.27 2C 4
49 03H 0.53 2C 4
69 03H 0.38 2C 4
76 03H 0.22 2C 5
6 03H 0.71 2C 5
6 04H 0.16 2C 5
7 02H 0.45 2C 5
7 03H 0.82 2C 5
15 03H 0.28 2C 5
18 02H 0.38 2C 5
19 02H 0.37 2C 5
19 03H 0.27 2C 5
62 02H 0.17 2C 5
66 03H 0.52 2C 5
71 02H 0.25 2C 5
76 03H 0.47 2C 5
86 08H 1.08 SG-SGMP-15-22 Revision I January 2016
A-21 SG Row Col Locn 2Rl8 Comment Volts 2C 5
89 02H 0.65 2C 6
23 02H 0.28 2C 6
30 02H 0.23 2C 6
30 03H 0.24 2C 6
54 03H 0.58 2C 6
55 02H 0.29 2C 6
63 02H 0.57 2C 6
78 03H 1.04 2C 6
84 03H 0.25 2C 6
92 04H 0.36 2C 7
40 03H 0.73 2C 7
40 04H 0.58 2C 7
49 02H 0.59 2C 7
49 03H 0.29 2C 7
58 02H 0.58 2C 7
67 02H 0.47 2C 7
80 03H 0.23 2C 8
2 08H 0.41 2C 8
23 02H 0.65 2C 8
24 02H 0.68 2C 8
43 03H 0.27 2C 8
63 06H 0.14 2C 8
72 03H 0.28 2C 8
84 03H 0.2 2C 9
13 03H 0.14 2C 9
20 04H 0.46 2C 9
26 03H 0.26 2C 9
30 02H 0.31 2C 9
32 02H 0.76 2C 9
35 02H 0.57 2C 9
37 02H 0.58 2C 9
38 03H 0.35 2C 9
39 05H 0.27 2C 9
41 02H 0.31 2C 9
44 03H 0.25 2C 9
45 05H 0.42 2C 9
45 06H 0.25 2C 9
47 02H 0.66 2C 9
54 02H 0.43 SG-SGMP-15-22 Revision 1 January 2016
A-22 SG Row Col Locn 2Rl8 Comment Volts 2C 9
54 04H O.I 9 2C 9
65 06H 0.22 2C IO 8
02H 0.89 2C IO 9
03H 0.24 2C IO IO 02H 0.66 2C 10 IO 03H 0.52 2C 10 I8 04H O.I4 2C IO 24 03H 0.34 2C IO 36 02H 0.3 2C 10 37 02H 0.81 2C IO 38 07H 0.29 2C IO 43 02H 0.39 2C IO 44 02H 0.33 2C 10 51 02H 1.22 2C IO 5I 05H 0.68 2C IO 54 02H 0.76 2C IO 54 03H 0.35 2C IO 72 02H 0.38 2C IO 72 03H O.I5 2C IO 78 03H 0.44 2C 1 I 7
02H 0.5I 2C I I 9
03H 0.54 2C I I I7 02H 0.8 2C I I 36 02H 0.46 2C I 1 42 02H 1.29 2C I I 49 02H 0.62 2C I I 49 03H 0.86 2C I I 62 03H 0.63 2C I I 70 03H 0.57 2C I I 72 03H 0.3 I 2C I I 88 05H 0.55 2C I2 9
02H 0.64 2C I2 30 02H 0.4 I 2C I2 35 04H O.I3 2C I2 55 02H 0.68 2C 12 70 02H 0.36 2C I2 70 03H 0.25 2C I2 83 03H O.I 2C 13 32 02H O.I 7 SG-SGMP-15-22 Revision 1 January 2016
A-23 SG Row Col Locn 2R18 Comment Volts 2C 13 43 02H 0.25 2C 13 43 03H 0.39 2C 13 59 03H 0.36 2C 13 63 02H 0.29 2C 13 64 02H 0.68 2C 14 29 04H 0.29 SAi 2C 14 38 02H 0.5 2C 14 39 05H 0.19 2C 14 50 02H 0.85 2C 14 54 02H 0.44 2C 14 59 03H 0.19 2C 14 70 08H 0.2 2C 15 5
04H 0.52 2C 15 14 03H 0.33 2C 15 35 02H 0.16 2C 15 35 03H 0.56 2C 15 38 04H 0.53 SAi 2C 15 39 02H 0.7 2C 15 39 03H 0.45 2C 15 61 02H 0.27 2C 15 62 02H 0.26 2C 15 80 03H 0.3 2C 15 87 03H 0.27 2C 16 15 03H 0.49 2C 16 17 02H 0.35 2C 16 46 02H 0.86 2C 16 46 04H 0.3 2C 16 55 06H 0.28 2C 16 57 03H 0.4 2C 16 63 02H 0.17 2C 16 73 02H 0.39 2C 17 9
04H 0.25 SAi 2C 17 14 04H 0.17 2C 17 17 02H 0.28 2C 17 18 02H 0.42 2C 17 24 04H 0.11 2C 17 26 03H 0.23 2C 17 35 03H 0.83 SAi 2C 17 43 02H 0.51 SG-SGMP-15-22 Revision 1 January 2016
I I
I I
I I
I I
I I
I I
SG 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C SG-SGMP-15-22 Revision 1 Row Col 17 48 17 49 17 50 17 61 17 61 17 63 17 66 17 67 17 68 18 15 18 47 18 48 18 48 18 48 18 50 18 51 18 53 18 54 18 54 18 55 18 62 18 62 18 62 18 67 18 67 18 73 19 26 19 29 19 48 19 48 19 54 19 57 19 57 19 79 20 75 20 76 20 76 20 85 21 18 A-24 Locn 2R18 Comment Volts 02H 0.64 02H 0.49 03H 0.56 SAi 02H 0.9 03H 0.28 02H 0.53 02H 0.19 02H 0.5 02H 0.33 06H 0.14 03H 0.36 02H 0.82 03H 0.72 04H 0.71 02H 0.25 02H 0.73 02H 0.73 02H 0.69 03H 0.51 02H 0.41 02H 0.5 03H 0.56 04H 0.16 02H 0.37 03H 0.58 03H 0.29 03H 0.25 02H 0.41 02H 0.48 03H 0.7 02H 0.38 04H 0.46 05H 0.63 02H 1.02 02H 0.36 02H 0.61 SAI 03H 0.83 03H 0.22 02H 0.34 January 2016
I I
I I
I I
I I
I I
I I
I I
I I
SG 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C SG-SGMP-15-22 Revision I Row Col 21 18 21 25 21 62 21 67 22 18 22 18 22 20 22 24 22 33 22 61 22 64 22 75 22 77 23 10 23 28 23 37 23 39 23 39 23 42 23 42 23 69 23 77 24 34 24 48 24 50 24 56 24 57 24 61 24 63 25 17 25 26 25 29 25 31 25 33 25 34 25 34 25 34 25 47 25 47 A-25 Loco 2R18 Comment Volts 03H 0.36 04H 0.1 02H 0.42 07H 0.21 02H 0.41 05H 0.3 02H 1.3 03H 0.18 02H 0.38 03H 0.19 03H 0.33 04H 0.45 SAi 03H 0.19 02H 0.35 03H 0.37 02H 0.71 02H 0.47 05H 0.44 02H 0.43 03H 0.5 03H 0.24 02H 0.35 08H 0.35 03H 0.68 02H 0.31 03H 0.69 02H 0.39 02H 0.76 04H 0.2 03H 0.3 04H 0.13 03H 0.41 plug 02H 0.53 08H 0.53 02H 0.78 03H 0.52 05H 0.66 03H 0.53 08H 0.28 January 2016
A-26 SG Row Col Loco 2R18 Comment Volts 2C 25 54 02H 0.23 2C 25 60 02H 0.47 2C 25 61 02H 0.55 2C 25 62 04H 0.4 2C 25 65 02H 0.62 2C 25 74 02H 0.18 SAi 2C 25 76 02H 0.84 2C 25 76 05H 0.33 2C 25 79 02H 0.41 2C 26 24 06H 0.2 2C 26 38 05H 0.11 2C 26 39 05H 0.45 2C 26 42 02H 0.57 2C 26 44 06H 0.2 2C 26 65 03H 0.18 2C 26 70 03H 0.67 2C 26 72 08H 0.34 2C 27 20 02H 0.61 2C 27 22 02H 0.4 2C 27 24 04H 0.26 2C 27 30 02H 0.66 plug 2C 27 31 02H 0.82 2C 27 60 02H 0.59 2C 27 69 02H 0.25 2C 27 76 03H 0.45 2C 28 27 05H 0.35 2C 28 35 02H 0.76 2C 28 42 02H 0.33 2C 28 42 04H 0.15 2C 28 44 02H 0.34 2C 28 50 03H 0.29 2C 28 73 03H 0.19 2C 28 85 02H 0.46 2C 29 11 05H 0.49 2C 29 26 05H 0.71 2C 29 29 03H 0.96 2C 29 37 02H 0.44 2C 29 38 05H 0.23 2C 29 43 03H 0.29 SG-SGMP-15-22 Revision 1 January 2016
A-27 SG Row Col Locn 2R18 Comment Volts 2C 29 47 02H 0.41 2C 29 48 05H 0.25 2C 29 57 05H 0.35 2C 29 63 05H 0.77 2C 30 12 03H 0.25 2C 30 24 02H 0.5 2C 30 25 04H 0.12 2C 30 31 03H 0.42 2C 30 31 04H 0.38 2C 30 41 02H 0.19 2C 30 60 02H 0.66 2C 30 61 02H 0.77 2C 30 61 04H 0.38 SAI 2C 31 14 05H 0.22 2C 31 17 04H 0.25 2C 31 22 02H 0.23 2C 31 29 04H 0.31 2C 31 49 02H 0.28 2C 31 60 02H 0.31 2C 31 61 03H 0.51 2C 31 61 04H 0.17 2C 31 64 04H 0.5 SAi 2C 31 66 02H 0.65 2C 31 66 05H 0.3 2C 31 75 02H 0.17 SAi 2C 31 77 06H 0.25 2C 31 81 02H 1.23 2C 32 19 05H 0.25 2C 32 25 03H 0.24 2C 32 63 03H 0.35 SAi 2C 33 34 06H 0.32 2C 33 60 07H 0.17 2C 34 24 07H 0.12 2C 34 39 05H 0.21 2C 34 55 03H 0.14 2C 34 58 02H 0.61 2C 34 58 04H 0.22 2C 34 58 05H 0.28 2C 34 59 02H 0.74 SG-SGMP-15-22 Revision 1 January 2016
A-28 SG Row Col Locn 2Rl8 Comment Volts 2C 35 22 02H 0.2 2C 35 34 03H 0.29 2C 35 34 04H 0.16 2C 35 38 07H 0.15 2C 35 53 06H 0.21 2C 36 20 03H 0.81 2C 36 26 05H 0.58 2C 36 27 05H 0.28 2C 36 53 02H 0.97 SAi 2C 37 26 05H 0.07 2C 37 35 03H 0.38 2C 37 52 06H 0.15 2C 38 42 05H 0.11 2C 39 27 04H 0.41 2C 40 25 03H 0.2 2C 40 39 03H 0.11 2C 40 53 04H 0.65 2C 41 27 04H 0.32 2C 41 44 04H 0.22 2C 41 50 08H 0.18 2C 42 32 04H 0.29 SG-SGMP-15-22 Revision 1 January 2016
Enclosure B L-16-022 Unit #2-2R18 Steam Generator F* (F Star) Report (6 Pages Follow)
FIRST ENERGY NUCLEAR OPERATING COMPANY Technical Services Engineering Department Nuclear Engineering Programs Section Beaver Valley Power Station Issue Date: November 24, 2015
Subject:
Unit #2 - 2R18 Steam Generator F* (F Star) Report Date:
12-02-ts
/"1' Reviewed by: Charlie O'Neill
~~
Supervisor, Nuclear Engineering Programs Date: ld-/?/ts-Approved by: Pat Pauvlinch ~
.Gv--
Date:
Manager, Technical Services Engineering
UNIT #2 -2R18 STEAM GENERATOR F* (F STAR) REPORT Technical Specification 5.6.6.2.4 requires that a report be submitted to the Nuclear Regulatory Commission (NRG) within 90 days after the initial entry into MODE 4 following an outage in which the F*
methodology was applied. For the fall 2015 refueling outage (2R18), the initial entry into MODE 4 occurred on November 25, 2015.
Per Technical Specification 5.6.6.2.4, the following information is to be submitted to the NRC:
(a) Total number of indications, location of each indication, orientation of each indication, severity of each indication, and whether the indications initiated from the inside or outside surface.
This information can be found in Tables 2RCS-SG21A, 2RCS-SG21B and 2RCS-SG21C.
(b) The cumulative number of indications detected in the tubesheet region as a function of elevation within the tubesheet.
This information can be found in Attachment A: "Unit 2 - Cumulative Listing of Tubesheet Indications (All Outages)".
(c) The projected end-of-cycle accident-induced leakage from tubesheet indications.
This information can be found in the right hand column of Tables 2RCS-SG21A, 2RCS-SG21 B and 2RCS-SG21C. It is also explained in Note 4 under Notes for All Tables on Page 3.
Discussion:
During 2R 18, the Plus Point probe was utilized to inspect the steam generator (SG) top of tubesheet region in both the hot and cold legs. The 2R18 inspection scope included 100 percent of the inservice hot leg tubes in all three steam generators plus a twenty percent random sample of the inservice cold leg tubes in 2RCS-SG21A. The inspection distance for either leg was from 6.0 inches above the top of tubesheet to 3.0 inches below the top of tubesheet. This inspection distance bounds the required F*
examination distance (that is, the expanded portion of the tube below the bottom of roll expansion transition) of 2.22 inches below the bottom of the roll expansion transition.
There are ten tubes located on the hot leg side of the SGs that have roll expansion transitions at lower than nominal elevations. The ten hot leg tubes with the deeper roll transition locations were inspected to a depth of 5.0 inches below the top of tubesheet to ensure the F* distance was adequately examined. In the cold leg side of 2RCS-SG21A, there are three tubes with lower than nominal roll transition locations.
These three tubes on the cold leg side of 2RCS-SG21A were tested to a depth 5.0" below the top of tubesheet to ensure the F* distance was adequately examined.
The morphology for the majority of the indications being reported from the hot leg top of tubesheet region is believed to be outside diameter stress corrosion cracking (ODSCC). This is based on signal recognition and the location of the reported indications. Both axial and circumferentially orientated indications were observed. Circumferential indications located above the top of tubesheet remain bounded by the expansion transition. One tube in the 2RCS-SG21 B hot leg was reported with a single axial primary water stress corrosion cracking (PWSCC) indication.
None of the indications that were reported during the 2R 18 SG examinations represented a (Cycle 18) leakage potential at postulated main steam line break {MSLB) conditions nor did the 2R 18 indications challenge the structural integrity performance criteria.
The projected accident induced leakage from all combined sources (sleeves, plugs, indications left in-service under Generic Letter 95-05 and other degradation within the tube bundle) remains well below the 2.2 gallons per minute {gpm) per SG allowed by the Technical Specifications.
Page 2 of6
The following information and Tables summarize the degradation observed during the 2R18 top of tubesheet region examinations.
Notes for all Tables:
- 1)
Under the Elevation column, TSH -Top of tubesheet (Hot Leg). +0.00" is located at the secondary side face of tubesheet. A negative measurement is the distance into the tubesheet from the secondary side face.
- 2)
Under the Orientation column, SAi - Single axial indications; SCI/MCI - Single or multiple circumferential indications.
- 3)
Under the Severity columns, this data has been re-analyzed utilizing the Plus Point probe 300 kHz channel which provides the most accurate sizing technique and is used for assessing the severity of the indications. The reported arc lengths are taken from the data resolution process. Profile analysis shows these measurements to be generally conservative.
- 4)
Indications reported within the 3.0" (5.0" for particular tube locations) inspection distance below the top-of-tubesheet were removed from service during 2R18. The projected end of cycle (EOC) accident induced leakage from these indications is considered zero.
2RCS-SG21A Hot Leg Tubesheet:
There were nineteen indications in eighteen tubes. Fourteen indications were located at or slightly below the top of tubesheet (Thirteen were single circumferential ODSCC indications and one was a multiple circumferential ODSCC indication). The remaining five indications were located above the top of tubesheet (Four were single circumferential ODSCC indications and one was a single axial ODSCC indication}.
2RCS-SG21A Cold Leg Tubesheet:
No indications were reported from the 20% random sample inspection of the cold leg tubesheet region.
Table 2RCS-SG21A Indication Location Severity Initiation Projected SG Row Column Elevation Orientation Volts Axial Arc Surface/
EOC Length Length Degradation Leakage A
8 37 TSH -0.02" SCI 0.06 43° ODSCC Zero A
9 44 TSH -0.09" SCI 0.10 95° ODS CC Zero A
11 36 TSH +0.00" SCI 0.13 92° ODSCC Zero A
11 42 TSH -0.02" MCI 0.10 59° ODSCC Zero 44 TSH -0.01" SCI 0.13 goo ODSCC Zero A
11 TSH -0.04" SCI 0.10 80° ODSCC Zero A
14 38 TSH -0.10" SCI 0.16 91° ODSCC Zero A
17 18 TSH -0.04" SCI 0.12 62° ODS CC Zero A
19 36 TSH -0.07" SCI 0.05 112° ODSCC Zero A
21 68 TSH +0.00" SCI 0.23 123° ODSCC Zero A
28 60 TSH -0.01" SCI 0.22 36° ODSCC Zero A
29 53 TSH +0.08" SCI 0.28 108° ODSCC Zero A
30 47 TSH -0.14" SCI 0.17 128° ODSCC Zero A
32 58 TSH +0.05" SCI 0.12 51° ODSCC Zero A
33 55 TSH +0.03" SCI 0.20 111° ODSCC Zero A
34 62 TSH +0.39" SAi 0.21 0.15" ODSCC Zero A
37 50 TSH -0.06" SCI 0.15 66° ODSCC Zero A
40 57 TSH +0.06" SCI 0.26 106° ODSCC Zero A
41 50 TSH -0.09" SCI 0.11 80° ODSCC Zero Page 3 of6
. 2RCS-SG21B Hot Leg Tubesheet:
There were eighteen indications in seventeen tubes. Twelve indications were located at or slightly below the top of tubesheet (Ten were single circumferential ODSCC indications and two were multiple circumferential ODSCC indication). The remaining six indications were located above the top of tubesheet (One was a single circumferential ODSCC indication, one was a multiple circumferential ODSCC indication, three were single axial ODSCC indications and one was a single axial PWSCC indication).
Table 2RCS-SG21 B Indication Location Severity Initiation Projected Orientation Axial Arc Surface/
EOC SG Row Column Elevation Volts Length Length Degradation Leakage CDearees>
B 2
49 TSH -0.12" SCI 0.13 48° ODSCC Zero B
3 36 TSH -0.21" MCI 0.09 83° ODSCC Zero TSH -0.21" MCI 0.08 48° ODSCC Zero 8
3 53 TSH -0.02" SCI 0.11 115° ODSCC Zero B
3 59 TSH -0.09" SCI 0.22 79° ODSCC Zero 8
4 35 TSH -0.03" SCI 0.12 88° ODSCC Zero 8
6 59 TSH +0.04" SAi 0.48 0.12" PWSCC Zero 8
8 58 TSH-0.13" SCI 0.13 69° ODS CC Zero B
12 14 TSH +0.02" MCI 0.09 60° ODSCC Zero B
13 16 TSH +0.12" SAi 0.20 0.10" ODSCC Zero B
14 9
TSH +0.04" SCI 0.16 59° ODSCC Zero B
15 51 TSH -0.08" SCI 0.28 300° ODSCC Zero B
16 51 TSH -0.15" SCI 0.21 220° ODSCC Zero B
16 54 TSH-0.06" SCI 0.12 290 ODSCC Zero B
19 26 TSH +0.18" SAi 0.27 0.11" ODSCC Zero B
20 27 TSH +0.10" SAi 0.25 0.13" ODSCC Zero B
21 19 TSH -0.04" SCI 0.13 103° ODSCC Zero B
25 72 TSH -0.09" SCI 0.15 102° ODSCC Zero Page 4 of6
2RCS-SG21C Hot Leg Tubesheet:
There were sixteen indications in sixteen tubes. All indications were located at or slightly below the top of tubesheet (Fifteen were single circumferential ODSCC indications and one was a multiple circumferential ODSCC indications).
Table 2RCS-SG21C Indication Location Severity Initiation Projected Orientation Axial Arc Surface/
EOC SG Row Column Elevation Volts Length Length Degradation Leakage (De11reesl c
1 59 TSH -0.09" SCI 0.14 142° ODSCC Zero c
4 29 TSH -0.05" MCI 0.25 177° ODSCC Zero c
4 51 TSH +0.00" SCI 0.23 145° ODSCC Zero c
4 53 TSH +0.00" SCI 0.15 151° ODSCC Zero c
5 23 TSH -0.11" SCI 0.23 192° ODSCC Zero c
5 36 TSH +0.00" SCI 0.18 177° ODSCC Zero c
7 32 TSH -0.07" SCI 0.13 149° ODSCC Zero c
9 73 TSH -0.05" SCI 0.12 52° ODSCC Zero c
10 46 TSH-0.14" SCI 0.12 100° ODS CC Zero c
15 27 TSH -0.05" SCI 0.09 157° ODSCC Zero c
23 25 TSH-0.14" SCI 0.15 171° ODSCC Zero c
24 23 TSH -0.04" SCI 0.18 206° ODSCC Zero c
25 29 TSH -0.08" SCI 0.26 114° ODSCC Zero c
26 47 TSH -0.08" SCI 0.11 40° ODSCC Zero c
27 30 TSH -0.14" SCI 0.27 160° ODSCC Zero c
34 64 TSH -0.10" SCI 0.10 50° ODSCC Zero Page 5 of6
Attachment A Unit 2 - Cumulative Listing of Tubesheet Indications (All Outages)
(Updated through 2R18) 2RCS-SG21A 2RCS-SG21A 2RCS-SG21B 2RCS-SG21B Hot Lea Tubesheet Cold Leg Tubesheet Hot Lei:i Tubesheet Cold Leg Tubesheet INCH COUNT INCH COUNT INCH COUNT INCH COUNT
+ 0.00" 12
+ 0.00"
+ 0.00" 6
+ 0.00"
- 0.01" 10
- 0.01"
- 0.01" 6
- 0.01"
- 0.02" 10
- 0.02"
- 0.02" 2
- 0.02"
- 0.03" 18
- 0.03"
- 0.03" 12
- 0.03"
- 0.04" 16
- 0.04"
- 0.04" 11
- 0.04"
- 0.05" 14
~:~$5e~-~~
- 0.05" 11
- 0.05"
- 0.06" 15
- 0.06"
- 0.06" 8
- 0.06"
- 0.07" 16
- 0.07"
- 0.07" 12
- 0.07"
- 0.08" 13
- 0.08"
- 0.08" 23
- 0.08"
- 0.09" 14
- 0.09"
- 0.09" 23
- 0.09"
- 0.10" 13
- 0.10"
- 0.10" 11
- 0.10"
- 0.11" 20
- 0.11"
- 0.11" 9
- 0.11"
- 0.12" 6
- 0.12"
- 0.12" 9
- 0.12"
- 0.13" 14
- 0.13"
- 0.13" 1
- 0.13"
- 0.14" 8
- 0.14"
- 0.14" 2
- 0.14"
- 0.15" 3
- 0.15"
- 0.15" 5
- 0.15"
- 0.16" 6
- 0.16" 2
- 0.16"
- 0.17" 4
- 0.17"
- 0.17" 2
- 0.17"
- 0.18"
- 0.18"
- 0.18" 2
- 0.18"
- 0.19" 1
- 0.19"
- 0.19"
- 0.19"
- 0.20" 1
- 0.20"
- 0.20"
- 0.20"
- 0.21" 2
i'.~16~39';.
- 0.27
1
- 0.31" 1
The five shaded tube locations were reported as a distorted tubesheet signal from the bobbin coif probe. Rotating pancake coil examinations did not confirm any of these signal as real indications.
TOTAL 214 TOTAL 2
TOTAL 161 TOTAL Page 6 of6 2RCS-SG21C Hot Leg Tubesheet INCH COUNT
+ 0.00" 8
- 0.01" 1
- 0.02" 3
- 0.03" 2
- 0.04" 5
- 0.05" 14
- 0.06" 9
- 0.07
9
- 0.08" 16
- 0.09" 12
- 0.10" 11
- 0.11" 10
- 0.12" 8
- 0.13" 3
- 0.14" 6
- 0.15" 1
- 0.16" 2
- 0.17" 1
- 0.18" 1
- 0.19" 1
- 0.20"
- 0.22" 1
- 0.36" 1
- 0.40" 1
- 0.41" 1
- 0.50" 1
- 1.22" 1
- 1.49" 1
- 3.16" 1
t51Ml6~
TOTAL 132 2RCS-SG21C Cold Leg Tubesheet INCH COUNT
+ 0.00"
- 0.01"
- 0.02"
- 0.03"
- 0.04"
- 0.05"
- 0.06"
- 0.07"
- 0.08"
- 0.09"
- 0.10"
- 0.11"
- 0.12"
- 0.13"
- 0. 14"
- 0.15"
- 0.16"
- 0.17
- 0.18"
- 0.19"
- 0.20"
~IS.\\29\\!i TOTAL 1
~
RrstEnergy Nuclear Operating Company Marty L. Richey Site Vice President January 22, 2016 L-16-022 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
SUBJECT:
Beaver Valley Power Station, Unit No. 2 Docket No. 50-412, License No. NPF-73 Steam Generator Inspection Reports - Fall 2015 Refueling Outage Beaver Valley Power Station P.O. Box 4 Shippingport, PA 15077 724-682-5234 Fax: 724-643-8069 In accordance with Beaver Valley Power Station, Unit No. 2 Technical Specifications 5.6.6.2.2 and 5.6.6.2.4, FirstEnergy Nuclear Operating Company hereby submits two reports containing steam generator inspection results. The enclosed reports provide information required by the technical specifications that were obtained during inspections conducted during the fall 2015 refueling outage.
There are no regulatory commitments contained in this submittal. If there are any questions or if additional information is required, please contact Mr. Thomas A. Lentz, Manager-Fleet Licensing, at (330) 315-6810.
Sincerely, n..,Q r*
r1.
Marty L. Rich y Enclosure(s):
A. Beaver Valley Unit 2 End-of-Cycle 18 Analysis and Prediction for End-of-Cycle 19 Voltage-Based Repair Criteria 90-Day Report, Revision 1 B. Unit #2 - 2R18 Steam Generator F* (F Star) Report cc:
NRC Region I Administrator NRC Resident Inspector NRC Project Manager Director BRP/DEP Site BRP/DEP Representative
Enclosure A L-16-022 Beaver Valley Unit 2 End-of-Cycle 18 Analysis and Prediction for End-of-Cycle 19 Voltage-Based Repair Criteria 90-Day Report, Revision 1 (69 Pages Follow)
SG-SGMP-15-22 Revision 1 Westinghouse Non-Proprietary Class 3 January 2016 Beaver Valley Unit 2 End-of-Cycle 18 Analysis and Prediction for End-of-Cycle 19 Voltage-Based Repair Criteria 90-Day Report
@Westinghouse
Westinghouse Non-Proprietary Class 3 SG-SGMP-15-22 Revision 1 Beaver Valley Unit 2 End-of-Cycle 18 Analysis and Prediction for End-of-Cycle 19 Voltage-Based Repair Criteria 90 Day Report William R. LaMantia*, Senior Engineer Steam Generator Management Programs January 2016 Reviewer: William K. Cullen*, Fellow Engineer Steam Generator Management Programs Approved: David P. Lytle*, Manager Steam Generator Management Programs Owner Accepted:
0 I oc:c,{ IG.
berti Technical Services Engineering Owner Accepted RP~.
I h(tP P. Pauvlinch, Manager, Technical Services Engineering
- Electronically approved records are authenticated in the Electronic Document Management System.
SG-SGMP-15-22 Revision 1 Westinghouse Electric Company LLC P.O. Box 158 Madison, PA 15663
© 2016 Westinghouse Electric Company LLC All Rights Reserved
II RECORD OF REVISIONS Revision Date Description 0
December Original 2015 1
January Editorial revisions to add commas and improve consistency.
2016 In Section 3. I, sentence added to better explain that specific inspection probes can only be used in Row 3 and 4 tubes with sleeves and indications on the cold leg side was corrected.
Tables 3-1, 3-2, 3-3, and 6-1 and Figures 3-1, 3-2, 3-3, 6-1, 6-2, and 6-3 updated to show that no indications exist beyond l.5V.
Figures 3-5 and 3-6 updated to show that the Cycle 17 growth rate curve was use as it bounded the growth observed during Cycle 18.
Note added to Table 7-2 to better explain the use of the Cycle 17 growth rate curve, and Maximum Volts for SG-B corrected.
Comment column added to the tables in Appendix A.
Change bars are used in the left margins where substantial or technical changes occurred. Change bars are not used for editorial changes such as formatting changes and minor non-technical corrections.
SG-SGMP-15-22 Revision 1
111 TABLE OF CONTENTS RECORD OF REVISIONS............................................................................................................ ii TABLE OF CONTENTS............................................................................................................... iii LIST OF TABLES......................................................................................................................... iv LIST OF TABLES............................................................................................. v 1
INTRODUCTION............................................................................................................ 1-1 2
SUMMARY
AND CONCLUSIONS................................................................................ 2-1 3
2Rl 8 INSPECTION RESULTS AND VOLTAGE GROWTH RATES............................. 3-1 3.1 2Rl 8 Inspection Results............................................................................................. 3-1 3.2 Voltage Growth Rates................................................................................................. 3-3 3.3 Probe Wear Criteria..................................................................................................... 3-4 3.4 NDE Uncertainties...................................................................................................... 3-4 4
DATABASE APPLIED FOR LEAK AND BURST CORRELATIONS........................... 4-1 4.1 Tube Material Properties............................................................................................ 4-1 4.2 Burst Correlation......................................................................................................... 4-1 4.3 Leak Rate Correlation................................................................................................. 4-1 4.4 Probability of Leak Correlation.................................................................................. 4-1 4.5 NDE Uncertainties...................................................................................................... 4-1 4.6 Upper Voltage Repair Limit....................................................................................... 4-1 5
SLB ANALYSIS METHODS........................................................................................... 5-1 6
BOBBIN VOLTAGE DISTRIBUTIONS......................................................................... 6-1 6.1 Calculation ofVoltage Distributions.......................................................................... 6-1 6.2 Probability of Detection (POD).................................................................................. 6-2 6.3 Limiting Growth Rate Distribution............................................................................ 6-2 6.4 Cycle Operating Period.............................................................................................. 6-2 6.5 Projected 2Rl 8 Voltage Distribution......................................................................... 6-2 7
SLB LEAK RATE AND TUBE BURST PROBABILITY ANALYSES........................... 7-1 7.1 2Rl 8 Condition Monitoring Leak Rate and Tube Burst Probability........................ 7-1 7.2 Cycle 19 Operational Assessment Leak Rate and Tube Burst Probability.............. 7-1 8
REFERENCES................................................................................................................. 8-1 APPENDIX A............................................................................................................................. A-1 SG-SGMP-15-22 Revision I
IV LIST OF TABLES Table 3-1 2R 18 OSI Voltage Distribution for SG-A............................................... 3-5 Table 3-2 2R18 OSI Voltage Distribution for SG-B............................................... 3-6 Table 3-3 2Rl 8 OSI Voltage Distribution for SG-C............................................... 3-7 Table 3-4 Indication Distribution as Function of Tube Support Plate........................... 3-8 Table 3-5 Voltage Growth Cumulative Distribution................................................ 3-9 Table 3-6 Growth Rate as Function of BOC Voltage Range..................................... 3-10 Table 3-7 Indications with the Largest Growth in Cycle 18...................................... 3-11 Table 4-1 7 /8" Tube Burst Pressure vs. Bobbin Amplitude Correlation Parameters............4-3 Table 4-2 Tube Leak Rate vs. Bobbin Amplitude Correlation Parameters......................4-4 Table 4-3 7/8" Tube Probability of Leak Correlation Parameters.................................4-5 Table 6-1 Predicted Voltage Distribution at EOC-19............................................... 6-3 Table 7-1 Condition Monitoring Leak and Burst Results for 2Rl8.............................. 7-2 Table 7-2 Operational Assessment Leak and Burst Results for EOC-19 (POD= 0.6)......... 7-2 Table A-1 OSI Indications for 2Rl 8 in SG-A........................................................ A-1 Table A-2 OSI Indications for 2Rl 8 in SG-B........................................................ A-9 Table A-3 OSI Indications for 2Rl 8 in SG-C...................................................... A-20 SG-SGMP-15-22 Revision 1
v LIST OF FIGURES Figure 3-1 Measured Bobbin OSI Voltage, 2R18 SG-A........................................... 3-12 Figure 3-2 Measured Bobbin DSI Voltage, 2Rl 8 SG-B........................................... 3-13 Figure 3-3 Measured Bobbin DSI Voltage, 2R18 SG-C........................................... 3-14 Figure 3-4 Number of Measured Bobbin DSI as Function ofTSP............................. 3-15 Figure 3-5 Voltage Growth during Cycle 18...................................................... 3-16 Figure 3-6 Expansion of Figure 3-5 at Extreme Voltage Growth during Cycle 18............ 3-17 Figure 3-7 Voltage Growth in Cycle 1 vs. BOC Voltage........................................ 3-18 Figure 6-1 Predicted Voltage Distribution at EOC-19, SG-A.................................... 6-4 Figure 6-2 Predicted Voltage Distribution at EOC-19, SG-B.................................... 6-5 Figure 6-3 Predicted Voltage Distribution at EOC-19, SG-C.................................... 6-6 SG-SGMP-15-22 Revision 1 January 2016
1-1 1
INTRODUCTION This report provides a summary of the Beaver Valley Unit 2 steam generator (SG) bobbin and
+Point'1 probe inspections at tube support plate (TSP) intersections from the Fall 2015, 2Rl 8 outage, together with postulated Steam Line Break (SLB) leak rate and tube burst probability analyses. The 2R18 outage represents the third application of the Generic Letter (GL) 95-05 (Reference 1) voltage based repair criteria, and implementation of its requirements, to the Beaver Valley Unit 2 Model 51M SGs. The criteria were implemented during the 2R16 outage. Information required by the GL 95-05 is provided in this report, including SLB leak rates and tube burst probabilities calculated using the end-of-cycle (EOC) conditions for the recently completed Cycle 18, representing a condition monitoring assessment of bobbin coil signal amplitudes for observed possible indications. In addition, a projection of EOC-19 bobbin coil voltage distributions, as well as the associated SG tube leak rates and burst probabilities through EOC-19 conditions is provided.
The condition monitoring analysis at End-of-Cycle 18 (EOC-18) was carried out using the actual bobbin coil voltage distributions measured during the 2Rl 8 outage. These results show that the 2Rl 8 condition monitoring leak rates and conditional burst probabilities for all three SGs are well within their respective allowable limits. A comparison with the projections made in the previous 90 Day Report at the 2R 17 outage (Reference 2) shows that the predictions were very conservative. These evaluations utilized the Westinghouse generic methodology that uses Monte Carlo analysis techniques (Reference 3).
The operational assessment analysis was performed to project leak rates and tube burst probabilities for postulated SLB conditions at the end of the upcoming cycle (EOC-19) based on the 2.0 volt repair criteria for 7/8-inch diameter tubes. These analyses utilized bobbin voltage distributions measured during the recent (2R18) inspection and a growth rate distribution bounding the last two inspections (2Rl 7 and 2Rl 8). Leak and burst analyses for the operational assessment were performed using the Reference 4 default value primary-to-secondary pressure differential of 2560 psi. The Cycle 19 operational assessment predicts that SG B will be the limiting SG for projected leakage. With a Cycle 19 period of operation estimated at 550 effective full power days (EFPD), the limiting EOC-19 maximum leak rate for SG B is projected to be 0.303 gpm (room temperature), which is well below the allowable limit of 2.2 gpm for the faulted SG. The corresponding maximum tube burst probability for the limiting SG (also SG B) of 3.61 x 10-5 is well below the GL 95-05 limit of 1.0 x 10-2* Thus, the GL 95-05 requirements are predicted to be satisfied at the EOC-19.
1 +Point' is a trademark of Zetec, Inc.
SG-SGMP-15-22 Revision 1 January 2016
2-1 2
SUMMARY
AND CONCLUSIONS A total of l 051 distorted support indications (DSI) in all three SGs combined were reported during the Beaver Valley Power Station Unit 2 (BVPS2) 2Rl 8 bobbin coil inspection. Per GL 95-05, only those DSI signals with a bobbin coil signal amplitude of 2.0 volts or greater are required to be inspected using a +Point (or equivalent) probe. All DSI signals reported during 2Rl 8 were less than 2.0 volts, so no indications were required to be tested with the +Point probe. However, some indications were tested with the +Point probe to confirm the minimal bobbin coil voltage growth condition. These indications were confirmed as axial outside diameter stress corrosion cracking (ODSCC) using the +Point coil during the 2R16 outage and have been inspected with a +Point probe at each successive outage. The maximum bobbin coil voltage indication in all three SGs was 1.46 volts on R21 C54 at the tube support plate designated as 02H in SG-B.
SLB leak rate and tube burst probability analyses were performed using the actual 2Rl 8 bobbin voltage distributions (condition monitoring analysis) as well as the projected EOC-19 bobbin voltage distributions (operational assessment). The SLB leak rates from the condition monitoring analysis show significant margins relative to the faulted SG allowable limit of 2.2 gpm (room temperature), Reference 11. The corresponding condition monitoring tube burst probability values are well below the allowable limit of 1.0 x 10-2.
At 2Rl 8, the largest SLB leak rate in the condition monitoring analysis is calculated for SG-B, with a magnitude of 0.0617 gpm, which is well below the allowable SLB leakage limit of 2.2 gpm in the faulted SG. All leak rate values quoted are equivalent volumetric rates at room temperature. The limiting conditional tube burst probability from the condition monitoring analysis, 1.57xl0-5 also predicted for SG-B, is well below the Nuclear Regulatory Commission (NRC) reporting guideline of 1.0 x 10-2* Thus, the condition monitoring results are well within the allowable limit/reporting guideline.
SLB leak rate and tube burst probability projections at the EOC-19 conditions were performed using the latest alternate repair criteria (ARC) database available for 7/8 inch outside diameter (OD) tubing (Addendum 7 update), which is documented in Reference 4. Leak and burst analyses for the Cycle 19 operational assessment were performed using the Reference 4 default primary-to-secondary pressure differential of 2560 psi. SG-B is predicted to be the limiting SG. For a projected Cycle 19 duration of 550 EFPD, the EOC-19 leak rate projected for SG-B using the GL 95-05 constant probability of detection (POD) of 0.6 is 0.303 gpm (at room temperature), which is less than the current limit of 2.2 gpm in the faulted SG. This leak rate projection utilized the leak rate calculation methodology of References 5 and 6. The limiting EOC-19 burst probability of 3.61 x 10-5 is also calculated for SG-B and is well below the allowable limit of 1.0 x 10-2* Therefore, all acceptance criteria of Reference l will be satisfied throughout Cycle 19.
SG-SGMP-15-22 Revision 1 January 2016
3-1 3
2R18 INSPECTION RESULTS AND VOLTAGE GROWTH RATES 3.1 2R18 Inspection Results For outages prior to 2Rl6, the alternate repair criterion per GL 95-05 had been approved for BVPS2, but was not implemented. FirstEnergy Nuclear Operating Company (FENOC) had not implemented the criterion due to the small number of bobbin indications at TSP intersections which were confirmed to contain axial outside diameter stress corrosion cracking (ODSCC) using a +Point probe. The criterion was implemented at 2Rl 6 due to an increase in the number of DSis confirmed to contain axial ODSCC from +Point probe examination. It should be noted, for 2R 16, and prior outages the bobbin probe analysis utilized the guidance and requirements of GL 95-05. Since the initial 2R16 (and prior outages) inspection plan did not assume that GL 95-05 would be implemented, all bobbin coil DSis were inspected using a +Point probe.
Note that under GL 95-05, only DSI signals with a 400/100 mix (hereafter referred to simply as the mix channel) signal amplitude of greater than 2.0 volts are required to be inspected using a
+Point probe.
In accordance with the guidance provided by the NRC GL 95-05, the 2Rl 8 inspection of the Beaver Valley Unit 2 SGs consisted of a 100% eddy current (EC) bobbin probe full length examination of the tube bundles in all three SGs. All hot and cold leg TSP intersections were inspected using 0.720 inch diameter bobbin probes, with the exception of those hot leg TSP intersections in Row 3 and Row 4 tubes, which contain SG tube sleeves at the hot leg top-of-tubesheet. In these tubes (2), a 0.630 inch diameter wide groove bobbin probe was used for DSI detection. If a DSI was observed using the 0.630 inch wide groove bobbin probe, an attempt was made to obtain an inspection of these locations using a 0.720 inch diameter bobbin probe from the cold leg side. If this probe could not pass over the U-bend, the tube was to be plugged as FENOC has not received NRC approval to utilize the reduced diameter probe results in the analysis. Prior evaluation of DSis from other plants, which were inspected using both the 0.640 inch wide groove and 0.720 standard bobbin probe show that the voltage response from the 0.640 inch wide groove, is conservative compared to the voltage response of the 0. 720 inch standard bobbin probe. A 0.630 diameter wide groove bobbin probe was used at 2Rl 7 and 2R 18.
The performance characteristics of the 0.630 and 0.640 inch wide groove probe were reviewed and confirmed to be consistent. During the 2Rl 7 outage, only one such indication was reported.
During the 2Rl 8 outage, none were reported. It should be noted that only two Row 3 or Row 4 tubes contain sleeves, both are Row 4 tubes.
To assess depth growth, the 2Rl 7 DSis with +Point probe confirmation were also inspected at 2Rl 8, even though none were required to be inspected with a +Point probe due to the low bobbin amplitudes. This inspection showed little or no change in the +Point probe signal character was observed, thus implying little or no depth growth of the indication. The largest
+Point probe signal amplitude in the 300 kHz channel from the confirmed DSI indications is only 0.2 volt, which represents a depth of 51 % through-wall (TW) using the sizing protocol of Electric Power Research Institute (EPRI) Examination Technique Specification Sheet (ETSS 128431. Long term trending of the Unit 2 DSI population has shown a limited growth potential. For Cycles 10 through 18, the mean DSI voltage growth has been essentially zero.
SG-SGMP-15-22 Revision 1 January 2016
3-2 Additionally, the +Point probe amplitudes for DSI signals confirmed as axial ODSCC have been much less than 1.0 volt, suggesting that a shallow depth of penetration exists. This in tum suggests the DSI voltage growth will remain minimal and not move to "extreme" over the next operating cycle. Thus, it can be concluded that, the character of DSI indications reported to date has been associated with a depth of penetration well below 100% TW.
In addition, the EOC-18 eddy current inspection plan included 100% +Point probe inspection of all hot leg and cold leg dents 2:.5 volts (as measured from the bobbin probe), which exceeds the GL 95-05 requirement for testing of said dents of down to the lowest cold leg TSP with DSI reports. The 2Rl 8 eddy current inspection plan also included 100% +Point probe inspection of dents with indication (DNI) and 25% of support plate residuals (SPR). The DNI call is generated using an auto data screening (ADS) process, and identifies any TSP intersection with a mix channel voltage of 2:.1.25 volts with a phase angle of ::S55 degrees. This screening is performed for the detection of signals, which could be confirmed as axial primary water stress corrosion cracking (PWSCC) indications at TSP intersections. The identification of a DNI call is not solely restricted to the ADS output; the manual data analysis can also report DNI indications. A DNI call also does not imply that a possible indication is being reported at a dented TSP, only that the bobbin coil signal amplitude and phase angle are within the DNI reporting window. SPRs are defined as bobbin coil signals which do not contain flaw-like components but have a signal amplitude of 2:.1.5 volts and phase angles >55 degrees. Axial ODSCC indications were not reported in these populations based on the +Point probe analysis. No axial PWSCC or circumferential stress corrosion cracking (SCC) was reported at any TSP intersection. The +Point probe inspection program for dents, DNis, and SPRs was extensive. The following table provides the number of +Point probe exams performed at TSP intersections during 2R 18.
DNI SPR SG
>5V Dents Total RPC Total RPC Tested Tested A
16 427 427 993 353 B
37 79 79 260 83 c
16 222 222 153 66 The requirements of the GL 95-05 methodology in Section 1.b of Reference 1 are all satisfied.
Tube intersections with the flow distribution baffle are excluded from this GL 95-05 analysis.
There are no other excluded tube support plate intersections (Reference 7). None of the indications included in this analysis were detected in dents >5.0 volts, as measured by bobbin.
All SPR indications >2V were tested with the +Point probe so that no ODSCC indications
> 1.0 volt would be missed or misread, as discussed earlier. No copper signal interference was detected.
Tables 3-1 through 3-3 present the 2Rl 8 bobbin voltage data for the TSP intersections in the three SGs with distorted support indications (DSis). A total of 1051 TSP locations had DSI indications in all three SGs combined, of which only 29 indications had amplitudes above SG-SGMP-15-22 Revision I January 2016
3-3 1.0 volt and no indications exceeded 1.5 volts. No DSI was above the GL 95-05 lower voltage repair limit of 2.0 volts.
Tables 3-1 through 3-3 tabulate the number of field bobbin indications, the number of those indications that were +Point probe RPC inspected, the number of +Point probe RPC confirmed indications, and the number of indications removed from service. No tubes were deplugged in the current inspection with the intent of returning them to service after inspection in accordance with the alternate repair criteria. The distribution of 2Rl 8 indications is also shown in Figures 3-1, 3-2 and 3-3 for SG-A, SG-B, and SG-C, respectively.
The distribution of 2R 18 indications as a function of support plate location is summarized in Table 3-4 and shown in Figure 3-4. The data show a strong predisposition of ODSCC to occur in the first few hot leg TSPs although the mechanism extended to higher TSPs. Only eight indications were detected on the cold leg side. This distribution is consistent with that observed at other plants and is commonly attributed to the temperature dependence of ODSCC.
Appendix A provides a listing of all DSis reported at the BVPS 2R 18 outage in the form of tables (Tables A-1, A-2, and A-3), whether axial ODSCC was confirmed (SAI/MAI in Comment column), and whether the tube contained the indication(s) was plugged (Comment column). No sleeves were installed at the 2Rl 8 outage.
3.2 Voltage Growth Rates For projection of leak rates and tube burst probabilities at EOC-19, voltage growth rates were developed from the 2Rl 7 and 2R18 inspection bobbin data. Growth is determined when the same indication can be identified in two successive inspections. Since there can be new indications in one outage, the number of indications for which a growth can be defined is less than the number of indications detected. Table 3-4 shows a distribution of growth as a function of TSP number.
Table 3-5 shows the frequency and cumulative probability distribution of growth as a function of voltage change in each BVPS2 steam generator during Cycle 18.
The average bobbin coil voltage growth rates for each SG during Cycle 18 are given in Table 3-6.
The average growth rates over the entire voltage range are negative indicating essentially no voltage growth. The Cycle 18 growth rates on an EFPY basis for each SG are shown in Figure 3-5. A magnification of the upper tail of this growth distribution is shown in Figure 3-6. Also shown in Figure 3-5 and in Figure 3-6 is a curve which bounds all of the growth curves for both Cycle 18 and Cycle 17 (Reference 2). The Cycle 17 bounding curve is more bounding than the Cycle 18 bounding curve, therefore, the Cycle 17 bounding curve is used in the operational assessment analysis to project the indication voltages at EOC-19.
Table 3-7 lists the top 15 indications based on Cycle 18 growth rate in descending order. The average growth rates over the entire voltage range for Cycle 18 are negative indicating essentially no voltage growth, but Table 3-7 shows that in cases of positive growth rates, that Cycle 18 had only modest growth. The growth during Cycle 18 for all indications was under 0.4 volts.
SG-SGMP-15-22 Revision I January 2016
3-4 To determine if BVPS2 growth rates exhibited a potential dependency on the BOC voltage, the growth rate data for Cycle 18 was plotted against BOC voltage, and the resulting plot is shown in Figure 3-7. The Cycle 18 growth data do not show any tendency to increase with the BOC voltage; if at all, the growth seems to decrease with increasing BOC voltage. Therefore, growth can be assumed independent of voltage in the Monte Carlo analysis for the operational assessment.
3.3 Probe Wear Criteria An alternate probe wear criteria approved by the NRC (Reference 8) was applied during the 2Rl 8 inspection. When a probe does not pass the 15% wear limit, this alternate criteria requires that only tubes with indications above 75% of the repair limit inspected since the last successful probe wear check be re-inspected with a good probe. As the repair limit for Beaver Valley Unit 2 is 2 volts, all tubes containing indications for which the worn probe voltage is above 1.5 volts are to be inspected with a new probe. Since no indications had amplitudes over 1.5 volts no tubes were retested due to the probe wear criteria being exceeded.
3.4 NDE Uncertainties The NOE uncertainties applied for the Cycle 18 voltage distributions in the Monte Carlo analyses for leak rate and burst probabilities are the same as those in the NRC Generic Letter 95-05 (Reference 1). The probe wear uncertainty has a standard deviation of 7.0% about a mean of zero and has a cut-off at 15% based on implementation of the probe wear standard. If the random sample of probe wear selected during the Monte Carlo simulations exceeds 15%, sampling of the probe wear distribution is continued until a value less than 15% is picked. The analyst variability uncertainty has a standard deviation of 10.3% about a mean of zero with no cut-off. These nondestructive examination (NOE) uncertainty distributions are included in the Monte Carlo analyses for SLB leak rates and tube burst probabilities based on the 2Rl 8 actual voltage distributions as well as for the EOC-19 projections.
SG-SGMP-15-22 Revision 1 January 2016
3-5 Table 3-1 2R18 DSI Voltage Distribution for SG-A
+Point In-Service, Probe
+Point
+Point Tested Not +Point Confirmed Voltage Number of Probe But Not Probe Returned or +Point Bin Indications Confirmed Confirmed Tested Plugged to Service Not Tested 0.1 4
0 0
4 0
4 4
0.2 47 2
0 45 0
47 47 0.3 81 7
0 74 0
81 81 0.4 60 I
0 59 0
60 60 0.5 44 2
0 42 0
44 44 0.6 24 I
0 23 0
24 24 0.7 14 2
0 12 0
14 14 0.8 7
0 0
7 0
7 7
0.9 13 I
0 12 0
13 13 I
2 0
0 2
0 2
2 1.1 2
0 0
2 0
2 2
1.2 2
I 0
1 0
2 2
1.3 1
0 0
1 0
1 1
1.4 0
0 0
0 0
0 0
1.5 0
0 0
0 0
0 0
1.6 0
0 0
0 0
0 0
1.7 0
0 0
0 0
0 0
1.8 0
0 0
0 0
0 0
1.9 0
0 0
0 0
0 0
2.0 0
0 0
0 0
0 0
Total 301 17 0
284 0
301 301 Average voltage= 0.386 volts SG-SGMP-15-22 Revision 1 January 2016
3-6 Table 3-2 2R18 DSI Voltage Distribution for SG-B
+Point In-Service, Probe Not
+Point
+Point Tested
+Point Confirmed Voltage Number of Probe But Not Probe Returned or +Point Bin Indications Confirmed Confirmed Tested Plugged to Service Not Tested 0.1 6
I 0
5 0
6 6
0.2 62 3
0 59 I
61 61 0.3 109 6
0 103 I
108 108 0.4 66 4
0 62 0
66 66 0.5 63 3
0 60 I
62 62 0.6 46 2
0 44 0
46 46 0.7 31 5
0 26 I
31 31 0.8 12 2
0 10 0
12 12 0.9 IO 0
0 10 0
10 IO I
5 0
0 5
0 4
4 1.1 5
0 0
5 0
5 5
1.2 2
0 0
2 0
2 2
1.3 0
0 0
0 0
0 0
1.4 0
0 0
0 0
0 0
1.5 I
0 0
I 0
I I
1.6 0
0 0
0 0
0 0
1.7 0
0 0
0 0
0 0
1.8 0
0 0
0 0
0 0
1.9 0
0 0
0 0
0 0
2.0 0
0 0
0 0
0 0
Total 418 26 0
392 4
414 414 Average voltage= 0.401 volts SG-SGMP-15-22 Revision I January 2016
3-7 Table 3-3 2R18 DSI Voltage Distribution for SG-C
+Point In-Service, Probe Not
+Point
+Point Tested
+Point Confirmed Voltage Number of Probe But Not Probe Returned or +Point Bin Indications Confirmed Confirmed Tested Plugged to Service Not Tested 0.1 3
0 0
3 0
3 3
0.2 50 2
0 48 0
50 50 0.3 71 2
0 69 0
71 71 0.4 59 2
0 57 0
59 59 0.5 44 2
0 42 1
43 43 0.6 35 4
0 31 0
35 35 0.7 30 3
0 27 1
29 29 0.8 17 2
0 15 0
17 17 0.9 14 1
0 13 0
14 14 1
2 1
0 1
0 2
2 1.1 3
0 0
3 0
3 3
1.2 0
0 0
0 0
0 0
1.3 4
0 0
4 0
4 4
1.4 0
0 0
0 0
0 0
1.5 0
0 0
0 0
0 0
1.6 0
0 0
0 0
0 0
1.7 0
0 0
0 0
0 0
1.8 0
0 0
0 0
0 0
1.9 0
0 0
0 0
0 0
2.0 0
0 0
0 0
0 0
Total 332 19 0
313 2
330 330 Average voltage = 0.424 volts SG-SGMP-15-22 Revision 1 January 2016
3-8 Table 3-4 Indication Distribution as Function of Tube Support Plate SG-A SG-B Largest Average Largest Average Number of Max.
Ave.
- Growth, Growth, Number of Max.
Ave.
- Growth, Growth, TSP Indications Volts Volts Volts Volts TSP Indications Volts Volts Volts Volts 02H 110 1.23 0.40 0.39
-0.04 02H 178 1.46 0.43 0.62
-0.02 03H 85 1.03 0.42 0.30
-0.03 03H 128 1.15 0.43 0.45
-0.01 04H 40 0.70 0.35 0.20
-0.03 04H 50 1.01 0.36 0.65
-0.01 05H 41 0.83 0.36 0.83
-0.02 05H 34 0.77 0.31 0.56 0.03 06H 8
0.44 0.28 0.17
-0.02 06H 8
0.42 0.29 0.09
-0.04 07H 5
0.66 0.41 0.52 0.11 07H 8
0.41 0.28 0.08
-0.04 08H 9
0.41 0.26 0.41 0.04 08H 7
0.73 0.29 0.28 0.01 04C 0
04C 1
0.14 0.14 0.02 0.02 06C 2
0.30 0.25 0.08 0.03 06C 2
0.15 0.14 0.15 0.04 08C I
0.28 0.28 0.02 0.02 08C 2
0.33 0.29 0.33 0.16 Total 301 Total 418 SG-C Composite Largest Average Largest Average Number of Max.
Ave.
- Growth, Growth, Number of Max.
Ave.
- Growth, Growth, TSP Indications Volts Volts Volts Volts TSP Indications Volts Volts Volts Volts 02H 135 1.30 0.51 0.36
-0.04 02H 423 1.46 0.45 0.62
-0.03 03H 99 1.04 0.41 0.36
-0.06 03H 312 1.15 0.42 0.45
-0.03 04H 41 0.71 0.31 0.45 0.00 04H 131 1.01 0.34 0.65
-0.01 05H 29 0.77 0.37 0.30
-0.03 05H 104 0.83 0.34 0.83
-0.01 06H 13 0.35 0.23 0.06
-0.10 06H 29 0.44 0.26 0.17
-0.06 07H 7
0.51 0.26
-0.05
-0.13 07H 20 0.66 0.30 0.52
-0.03 08H 8
1.08 0.42 0.04
-0.07 08H 24 1.08 0.32 0.41
-0.01 04C 0
04C 1
0.14 0.14 0.02 0.02 06C 0
06C 4
0.30 0.20 0.15 0.00 08C 0
08C 3
0.33 0.29 0.33 0.11 Total 332 Total 1051 SG-SGMP-15-22 Revision 1 January 2016
3-9 Table 3-5 Voltage Growth Cumulative Distribution SG-A SG-B SG-C Comoosite Voltage Change:
Cumulative Cumulative Cumulative Cumulative EOC-18 minus Number of Probability Number of Probability Number of Probability Number of Probability EOC-17 Indications Distribution Indications Distribution Indications Distribution Indications Distribution
-0.8<L'l V:S-0.7 0
0.0000 0
0.0000 0
0.0000 0
0.0000
-0.7<L'l V:S-0.6 0
0.0000 0
0.0000 0
0.0000 0
0.0000
-0.6<ll V:S-0.5 0
0.0000 0
0.0000 0
0.0000 0
0.0000
-0.5<ll V:S-0.4 0
0.0000 0
0.0000 0
0.0000 0
0.0000
-0.4<L'l V:S-0.3 0
0.0000 0
0.0000 0
0.0000 0
0.0000
-0.3<L'l V:S-0.2 0
0.0000 0
0.0000 0
0.0000 0
0.0000
-0.2<L'l V:S-0.1 18 0.0612 13 0.0327 17 0.0520 48 0.0471
-0.l <llV:S-0.0 33 0.1735 41 0.1357 43 0.1835 117 0.1619 O.O<ll V:SO. l 130 0.6156 198 0.6332 173 0.7125 501 0.6536 0.1 <fl V:S0.2 87 0.9116 127 0.9523 81 0.9602 295 0.9431 0.2<L'l V:S0.3 22 0.9864 16 0.9925 10 0.9908 48 0.9902 0.3<L'l V:S0.4 4
1.0000 3
1.0000 3
1.0000 10 1.0000 0.4<L'l V:S0.5 0
1.0000 0
1.0000 0
1.0000 0
1.0000 0.5<L'l V:S0.6 0
1.0000 0
1.0000 0
1.0000 0
1.0000 0.6<L'lV:S0.7 0
1.0000 0
1.0000 0
1.0000 0
1.0000 0.7<L'l V:S0.8 0
1.0000 0
1.0000 0
1.0000 0
1.0000 Number of Indications with 294 398 327 1019 Growth SG-SGMP-15-22 Revision l January 2016
3-10 Table 3-6 Growth Rate as Function of BOC Voltage Range Number of Average Voltage Average Voltage Voltage Range Indications for Average BOC Growth per Growth per Growth Voltage Cycle18 EFPY Composite Entire Range 1019 0.442
-0.0360
-0.0271 Vboc<0.75 914 0.389
-0.0312
-0.0234 Vboc>0.75 105 0.903
-0.0782
-0.0587 SG-A Entire Range 294 0.416
-0.0314
-0.0236 Vboc<0.75 268 0.369
-0.0259
-0.0194 Vboc>0.75 26 0.897
-0.0881
-0.0662 SG-B Entire Range 398 0.433
-0.0280
-0.0211 Vboc<0.75 362 0.385
-0.0253
-0.0190 Vboc>0.75 36 0.907
-0.0556
-0.0417 SG-C Entire Range 327 0.477
-0.0500
-0.0375 Vboc<0.75 284 0.412
-0.0437
-0.0329 Vboc>0.75 43 0.902
-0.0912
-0.0685 SG-SGMP-15-22 Revision I January 2016
3-11 Table 3-7 Indications with the Largest Growth in Cycle 18 TSP#
EOC-18 EOC-17 C18 Growth,
+Point Probe SG Row Col Volts Volts Volts Tested A
5 26 02H 1.01 0.62 0.39 No c
22 20 02H 1.3 0.94 0.36 No c
7 40 03H 0.73 0.37 0.36 No B
9 52 02H 0.86 0.51 0.35 No A
13 39 05H 0.7 0.38 0.32 No A
5 JO 03H 0.74 0.44 0.30 No A
7 18 03H 0.88 0.59 0.29 No B
5 52 02H 0.89 0.6 0.29 No B
13 77 03H 1.05 0.77 0.28 No c
12 9
02H 0.64 0.37 0.27 No B
30 50 04H 1.01 0.75 0.26 No A
16 70 03H 0.47 0.22 0.25 No A
5 29 02H 1.13 0.89 0.24 Yes B
9 85 02H 0.86 0.63 0.23 No B
30 55 03H 0.63 0.40 0.23 No SG-SGMP-15-22 Revision I January 2016
3-12 2R18 Measured vs. Predicted Voltage Distribution SG A 1111 Measured 1111 Predicted 140 f
120
~ 100 0
u :c 80
.= -
0 60 QI
.sl E
- i 40 z
20 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
1.1 1.2 1.3 1.4 1.5 Voltage Bin Figure 3-1 Measured Bobbin DSI Voltage, 2R18 SG-A SG-SGMP-I 5-22 Revision I January 20 I 6
180 160 140 l5 120 I'll u :c 100
-= -
0 80 QI
..c E
60
- , z 40 20 0
2R18 Measured vs. Predicted Voltage Distribution SG B II Measured 1111 Predicted 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
1.1 1.2 1.3 1.4 1.5 1.6 1.7 Voltage Bin Figure 3-2 Measured Bobbin DSI Voltage, 2R18 SG-B 3-13 SG-SGMP-15-22 Revision 1 January 2016
120 100 UI g 80 nl u :a c
60 0...
QI
.c
~ 40 z
20 0
3-14 2R18 Measured vs. Predicted Voltage Distribution SG C 111 Measured 111!1 Predicted 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
1.1 1.2 1.3 1.4 1.5 1.6 Voltage Bin Figure 3-3 Measured Bobbin DSI Voltage, 2R18 SG-C SG-SGMP-15-22 Revision I January 2016
3-15 Number of Indications vs. Support Number 111 SG A 1111 SG B SG C 200 180 160 c
140 0
111 120
... :c = 100 0..
80 Qj
..c E
60
- s z 40 20 0
02H 03H 04H OSH 06H 07H 08H 04C 06C 08C Support Number Figure 3-4 Number of Measured Bobbin DSI as a Function of TSP SG-SGMP-15-22 Revision I January 2016
c 0
Cycle 18 OSI Bobbin Voltage Growth/EFPV
~CY 17 Bound -t-SG A -SG B '"""*""SG C
~ 0.6 ------------1-11'---I-----------------
~ 0.5 +----------1!1111--#------------------
3 0.4 -+----------
E
- I u 0.3 +---------
-0.4
-0.2 0
0.2 Growth, Volts/EFPY 0.4 Figure 3-5 Voltage Growth during Cycle 18 0.6 3-16 SG-SGMP-15-22 Revision 1 January 2016
3-17 Cycle 18 OSI Bobbin Voltage Growth/EFPY
+ SG A Ill SG B IA SG C ~CY 17 Bound 1.00 0.99 0.98 0.97 c
0
+::
~ 0.96
~ 0.95
+::
ra :i 0.94 E
- J u 0.93 0.92 1111 0.91 0.90 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 Growth, Volts/EFPY Figure 3-6 Expansion of Figure 3-5 at Extreme Voltage Growth during Cycle 18 SG-SGMP-15-22 Revision 1 January 2016
3-18 Growth in Volts in Cycle 18 vs. BOC Volts
+SG A lllSG B SG C 0.8 ~---------------------------
0.6 +-----------------------------
0.4 +----------,-----.-----------:-------------
II
-0.6 +-----------------------------
-0.8 +------.-----~----,.-----.-----.-----r----~--~
0 0.2 0.4 0.6 0.8 BOC Volts 1
1.2 1.4 1.6 Figure 3-7 Voltage Growth in Cycle 18 vs. BOC Voltage SG-SGMP-15-22 Revision 1 January 2016
4-1 4
DATABASE APPLIED FOR LEAK AND BURST CORRELATIONS 4.1 Tube Material Properties The tube material properties are provided in Table 4-1 of Reference 4 for 7 /8-inch diameter tubes at 650°F. The parameters used in the analysis are the flow stress mean (sum of yield and ultimate strengths divided by 2) of 68. 78 ksi and the flow stress standard deviation of 3.1725 ksi.
4.2 Burst Correlation The burst pressure, Pb, is normalized to a material with a flow stress of 68.78 ksi, which is the mean of the Westinghouse 7/8-inch tube data. The actual material property values for Beaver Valley Unit 2 are slightly higher than the average of all Westinghouse data. The correlation parameters shown in Table 4-1 are taken from Reference 4.
4.3 Leak Rate Correlation The steam line break pressure to be applied is 2560 psi unless a lower pressure can be justified.
Therefore, the leak correlation for pressure of 2560 psi from Reference 4 is used for the leakage predictions. The parameters are shown in Table 4-2. The leak rate criterion is given in terms of gallons per minute as condensed liquid at room temperature.
4.4 Probability of Leak Correlation The probability of leak as a function of indication voltage is taken from Reference 4. The parameters are shown in Table 4-3. In the Monte Carlo analysis leakage is quantified only if the indication is computed to be a leaker, based on the probability of leak correlation.
4.5 NDE Uncertainties The NOE uncertainties applied for the EOC-18 and EOC-19 voltage projections are described in Reference 1. The probe wear uncertainty has a standard deviation of 7% about a mean of zero and has a cut-off at 15% based on implementation of the probe wear standard. The analyst variability uncertainty has a standard deviation of 10.3% about a mean of zero with no cut-off.
These NOE uncertainty distributions are used in the Monte Carlo analysis to predict the burst probabilities and accident leak rates at EOC-18 and EOC-19. The voltages reported were adjusted to account for differences between the laboratory standard and the standard used in the field.
4.6 Upper Voltage Repair Limit Per Table 5.4-20 of Reference 12, the BVPS-2 Updated Final Safety Analysis Report (UFSAR),
the pressurizer safety relief valves have a nominal setting of 2485 psig, or the Reactor Coolant System (RCS) design pressure. Applying a 3% allowance for accumulation per Section 2 of to GL 95-05, the applicable SLB conditions pressure differential across the SG tubes is then 2560 psig, which is the traditional pressure differential used for prior GL 95-05 SG-SGMP-15-22 Revision 1 January 2016
4-2 analyses. The upper voltage repair limit of 4.55 volts is based on the structural limit in Table 4-1 for a pressure differential of 2560 psi with a safety factor of 1.4 applied to the differential pressure. The upper voltage repair limit considers the projected voltage growth during the next cycle and NOE uncertainty. The maximum average percentage growth rate as a percentage of BOC voltage values for any steam generator is seen from Table 3-6 to be very small. According to Reference 1, the minimum growth adjustment is 30% per EFPY (45.2% per cycle for the bounding 550 EFPO Cycle 19). Therefore the specific maximum growth value of 45.2% and 20% for NOE uncertainty was used to estimate the upper voltage repair limit. This results in an upper voltage repair limit of 7.51 I (I + 0.452 + 0.20) = 4.55 volts. No indications greater than this voltage were left in service; the largest OSI voltage reported at 2RI 8 was 1.46 volts.
The analysis takes no credit for power operated relief valve (PORV) actuation even though the PORVs, block valves, and associated testing programs have been shown to satisfy the requirements of GL 90-06, as indicated in the NRC Safety Evaluation Report dated May 15, 1995. Crediting the PORV s would effectively increase the upper voltage repair limit by limiting the maximum pressure differential during a postulated SLB event and would reduce the calculated SLB conditions by limiting the maximum pressure differential.
Considering the inspection history of the BVPS2 SGs, it is unlikely that a bobbin coil OSI voltage of>4.5 volts will be observed within the BVPS2 SGs.
SG-SGMP-15-22 Revision 1 January 2016
4-3 Table 4-1 7/8" Tube Burst Pressure vs. Bobbin Amplitude Correlation Parameters Ps = a 0 + a 1 log( Volts )
Parameter Addendum 7 Database Value Intercept, a0 7.4801 Slope, a 1
-2.4002 2
79.67%
Index of Deter., r Std. Deviation, crE
~rror 0.8802 Mean of Log( V) 0.3111 SS of Log( JI) 51.6595 N (data pairs) 100 Str. Limit (2560 psi) <1>
7.51V Str. Limit (2405 psi) 9.40V p Value for a (Z)
I 5.60* 10-36 Reference err 68.78 ksi <3)
Notes: (1)
Values reported correspond to applying a safety factor of 1.4 on the differential pressure associated with a postulated SLB event.
(2)
Numerical values are reported only to demonstrate compliance with the requirement that the value be less than 0.05.
(3)
This is the flow stress value to which all data were normalized prior to performing the regression analysis. This affects the coefficient and standard error values. The corresponding values for a flow stress of75.0 ksi can be obtained from the above values by multiplying by 1.0904.
SG-SGMP-I 5-22 Revision I January 2016
4-4 Table 4-2 Tube Leak Rate vs. Bobbin Amplitude Correlation Parameters Q = 10 [b3 +b4 log (Volts )]
Parameter Addendum 7 Database Value SLB AP = 2560 psi Intercept, b3
-0.33476 Slope, b4 0.95311 Index of Determination, r 2
12.4%
Residuals, CJError (bs) 0.8175 Mean of Log(Q) 0.7014 SS ofLog(Q) 22.8754 p Value for b4 2.4%
SLB AP = 2405 psi Intercept, b3
-0.8039 Slope, b4 1.2077 Index of Determination, r 2
20.0%
Residuals, CJError (bs) 0.7774 Mean of Log(Q) 0.5090 SS ofLog(Q) 22.6667 p Value for b4 0.5%
Common Data Data Pairs, N 32 Mean of Log( V) 1.0871 SS ofLog(V) 3.1116 SG-SGMP-15-22 Revision 1 January 2016
4-5 Table 4-3 718" Tube Probability of Leak Correlation Parameters 1
Pr( Leak)= 1 + e-lb1 +b2 log( Volts )j Parameter Addendum 7 Database Value Logistic Intercept, b1
-4.9847 Logistic Slope, b2 7.6110 Intercept Variance, V11 (tJ 1.2904 Covariance, V12
-1.7499 Slope Variance, V22 2.8 I 81 NumberofData, N 120 Deviance 33.66 Pearson SD 62.9%
MSE 0.285 Note:
(1) Parameters Vu are the elements of the covariance matrix of the coefficients, P;. of the regression equation.
SG-SGMP-I 5-22 Revision I January 2016
5-1 5
SLB ANALYSIS METHODS A Monte Carlo analysis technique is used to calculate the SLB leak rates and tube burst probabilities for both actual 2R 18 and projected EOC-19 voltage distributions. The Monte Carlo analysis accounts for parameter uncertainty. The analysis methodology is described in the Westinghouse generic methods report of Reference 4 as supplemented by References 5 and 6. The Monte Carlo computer program used to implement this method is documented in Reference 9. Essentially the same methodology was applied to leak and burst analyses performed for the original Beaver Valley Unit I SGs, Reference I 0.
In general, the methodology involves application of correlations for burst pressure, probability of leakage and leak rate to a measured or calculated EOC voltage distribution to estimate the likelihood of tube burst and primary-to-secondary leakage during a postulated SLB event.
Uncertainties associated with burst pressure, leak rate probability and leak rate correlations parameters are explicitly included by sampling distributions for the parameter uncertainties through the Monte Carlo sampling process. NDE uncertainties are also included. The voltage distributions used in the leak and burst projections for the next operating cycle are obtained by applying growth data to the BOC distribution. The probability of detection (POD) used to generate the BOC voltage distributions considers both detection uncertainty and the likely occurrence of new indications.
Comparisons of projected EOC voltage distributions with actual distributions after a cycle of operation for a number of plants have shown that the Monte Carlo analysis technique yields conservative estimates for EOC voltage distribution as well as leak and burst results based on those distributions.
SG-SGMP-15-22 Revision 1 January 2016
6-1 6
BOBBIN VOLTAGE DISTRIBUTIONS This section describes the input data used to calculate EOC bobbin voltage distributions and presents results of calculations to project EOC-19 voltage distributions.
6.1 Calculation of Voltage Distributions The analysis for EOC-19 voltage distribution starts with an initial voltage distribution which is projected to the end-of-cycle conditions based on the growth rate and the anticipated cycle operating duration. The number of indications assumed in the analysis to project EOC voltage distributions, SLB leak rates and tube burst probabilities is obtained by adjusting the number of reported indications using a POD, which accounts for both the detection uncertainty and the development of new indications over the projection period. This is accomplished by using a POD factor, which is defined as the ratio of the actual number of indications detected to total number of indications present. A conservative value is assigned to POD based on historic data, and the value used herein is discussed in Section 6.2. The calculation of projected bobbin voltage frequency distribution is based on a net total number of indications returned to service, defined as follows.
NTot RTS =NJ POD - Nrepaired + Ncteplugged
- where, NTot RTS
Number of bobbin indications being returned to service for the next cycle, Ni Number of bobbin indications (in tubes in service) identified by inspection after the previous cycle, POD
Probability of detection, Nrepaired Number ofN which are repaired (plugged) after the last cycle, Ncteplugged Number of indications in tubes deplugged after the last cycle and returned to service in accordance with voltage-based repair criteria.
There are no deplugged tubes returned to service at the beginning of Cycle 19 (BOC-19); therefore, Ndeplugged = 0. Thirteen tubes with 13 indications at the TSP were plugged, therefore Nrepaired = 13.
2R18 RPC "no degradation found" (NDF) indications were included in establishing the BOC-19 indication distributions shown in Table 6-1. During the Monte Carlo simulations, voltages for bins with several indications are selected by randomly sampling the voltage bins. For a few higher voltage indications in each SG, each indication is considered to be in a separate bin, and the actual indication voltage is utilized in the calculations.
The methodology used in the projection of EOC-19 bobbin voltage frequency distributions is described in Reference 3, and it is essentially the same as that used in the original Beaver Valley Unit 1 SGs, Reference l 0.
SG-SGMP-15-22 Revision 1 January 2016
6-2 6.2 Probability of Detection (POD)
The Generic Letter 95-05 (Reference 1) requires the application of a constant POD value of 0.6 to define the BOC distribution for EOC voltage projections unless an alternate POD is approved by the NRC. A POD value of 1.0 represents the ideal situation where all indications are detected. In this report the Reference 1 POD value of 0.6 is used.
6.3 Limiting Growth Rate Distribution As discussed in Section 3.2, the NRC guidelines in Generic Letter 95-05 stipulate that the more conservative growth rate distributions from the past two inspections should be utilized for projecting EOC distributions for the next cycle. For conservatism, a growth rate curve which bounded the growth rates of both cycles was used. Growth distributions used in the Monte Carlo calculations are specified in the form of a histogram, so no interpolation is performed between growth bins. This assures that the largest growth value in the distribution is utilized in the Monte Carlo simulations.
6.4 Cycle Operating Period The operating periods used in the growth rate/EFPY calculations and voltage projections are as follows.
Cycle 18
- 493 EFPD or 1.331 EFPY (actual)
Cycle 19 550 EFPD or 1.506 EFPY (projected) 6.5 Projected EOC-19 Voltage Distribution Calculations for the EOC-19 bobbin voltage projections were performed for all three SGs based on the 2R18 distributions shown in Table 6-1. The BOC-19 distributions were adjusted to account for probability of detection as described above, and the adjusted number of indications at BOC-19 is also shown in Table 6-1. Calculations were performed using a constant POD of 0.6 and 1,000,000 Monte Carlo trials. The distribution of indications at BOC-19 and the distribution of indications projected to EOC-19 are shown in Figures 6-1, 6-2, and 6-3 for SG-A, SG-B, and SG-C, respectively. SG-B has the largest number of indications at BOC-19. Reporting the maximum predicted voltage is not required by GL 95-05, but it is arbitrarily chosen to be the voltage where the integration of the upper tail of the voltage distribution reaches a 0.3 fractional indication.
SG-SGMP-15-22 Revision I January 2016
6-3 Table 6-1 Predicted Voltage Distribution at EOC-19 SG-A Number of Indications SG-B Number of Indications SG-C Number of Indications Volt Bins Measured In out Predicted Measured In out Predicted Measured In out Predicted EOC-18 BOC-19 EOC-19 EOC-18 BOC-19 EOC-19 EOC-18 BOC-19 EOC-19 0.1 4
6.67 3.04 6
10 4.36 3
5 2.64 0.2 47 78.33 26.22 62 103.33 35.09 50 83.33 26.46 0.3 81 135 63.46 109 181.67 83.79 71 118.33 60.94 0.4 60 100 85.29 66 110 109.60 59 98.33 79.99 0.5 44 73.33 84.39 63 105 108.43 44 73.33 82.67 0.6 24 40 72.57 46 76.67 100.87 35 58.33 76.44 0.7 14 23.33 54.53 31 51.67 82.44 30 50 65.28 0.8 7
11.67 38.39 12 20 60.75 17 28.33 52.16 0.9 13 21.67 26.42 10 16.67 41.30 14 23.33 38.43 1
2 3.33 17.74 5
8.33 26.84 2
3.33 26.13 1.1 2
3.33 11.40 5
8.33 17.09 3
5 16.4 1.2 2
3.33 7.14 2
3.34 10.58 0
9.54 l.3 l
1.67 4.51 0
0 6.32 4
5.13 1.4 2.82 0
0 3.65 2.54 l.5 1.71 1
1.67 2.00 0.91 1.6 0.98 0.89 0
l.7 0.05 0
0.7 1.8 0.70 0.7 0.3 1.9 0.30 0.3 2
Total 301 502 502 418 697 697 332 547 547 SG-SGMP-15-22 Revision l January 2016
160 140
"' 120 c
0
- ~ 100 u
c 80 0...
~ 60 E
- I z 40 20 0
2R19 Predicted Voltage Distribution SG A 1!11'1 EOC-19 111 BOC-19 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2
Voltage Bin Figure 6-1 Predicted Voltage Distribution at EOC-19, SG-A 6-4 SG-SGMP-15-22 Revision l January 2016
200 180 160
~ 140 0
- .;::; G 120
- a c
- 100 0...
~ 80 E
- s z 60 40 20 0
2R19 Predicted Voltage Distribution SG B lllll EOC-19 1111 BOC-19 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2
Voltage Bin Figure 6-2 Predicted Voltage Distribution at EOC-19, SG-B 6-5 SG-SGMP-15-22 Revision 1 January 2016
140 120
~ 100 0
I'll
- ij 80 c
lii 60
.J:I E
- I z 40 20 0
2R19 Predicted Voltage Distribution SG C II EOC-19 1111 BOC-19 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2
Voltage Bin Figure 6-3 Predicted Voltage Distribution at EOC-19, SG-C 6-6 SG-SGMP-15-22 Revision 1 January 2016
7-1 7
SLB LEAK RATE AND TUBE BURST PROBABILITY ANALYSES This section presents the results of the analyses carried out to predict leak rates and tube burst probabilities at the postulated SLB conditions using the actual voltage distributions from the 2R 18 inspection (condition monitoring assessment) as well as for the projected EOC-19 voltage distributions (operational assessment). The methodology used in these analyses is described in Section 6.
7.1 2R18 Condition Monitoring Leak Rate and Tube Burst Probability Analyses to calculate the 2Rl 8 SLB leak rates and tube burst probabilities were performed using the actual bobbin voltage distributions presented in Tables 3-1 to 3-3. The results of the Monte Carlo calculations are summarized in Table 7-1.
The SLB leak rates and tube burst probabilities, calculated using the actual measured 2Rl 8 voltage distributions using 1,000,000 Monte Carlo trials, are shown in Table 7-1. The methodology used for these calculations is documented in WCAP-14277, Rev. 1. The probability of leak, leak rate and burst pressure correlations for 7 /8 inch tubes presented in the latest addendum to the EPRI Alternate Repair Criteria (ARC) Database, Reference 3, were used. The SLB primary-to-secondary pressure differential applied in the analysis is 2560 psi. The maximum 2R 18 leak rate of 0.0617 gpm and the maximum conditional burst probability of 1.57 x 10-5 are well below their respective allowable limits (2.2 gpm per Reference 11, and 1.0 x 10-2 per Reference 1, respectively). Therefore, the condition monitoring performance criteria are satisfied.
7.2 Cycle 19 Operational Assessment Leak Rate and Tube Burst Probability The SLB leak rate and tube burst probability projection for the Cycle 19 operational assessment was carried out using the latest update to the ARC database documented in Reference 4, the POD of 0.60, and 1,000,000 Monte Carlo trials. The EOC-19 leak and burst analyses were performed using a primary-to-secondary pressure differential of 2560 psi, even though it is likely that PORV actuation will occur prior to the pressurizer safety relief valve lift setting.
The EOC-19 projections, considering a 550 EFPD operation cycle, using POD = 0.6 are shown in Table 7-2. Both the maximum projected EOC-19 leak rate of 0.303 gpm and the maximum conditional burst probability of 3.61 x 10-5 are well below their respective allowable limits (2.2 gpm and 1.0 x 10-2, respectively). Therefore, the operational assessment performance criteria for the OSI indications are satisfied for Cycle 19.
SG-SGMP-15-22 Revision I January 2016
7-2 Table 7-1 Condition Monitoring Leak and Burst Results for 2R18 Number of Maximum Probability of 1 or SLB Leak Rate Indications at Volts at More Burst at at 95/95 EOC-18 EOC-18 95% Confidence (gpm)
SG-A 301 1.23 1.05 x 10-5 0.0394 SG-B 418 1.46 1.57 x 10-5 0.0617 SG-C 332 1.3 7.75 x 10-6 0.0485 Table 7-2 Operational Assessment Leak and Burst Results for EOC-19 (POD= 0.6)
Growth Rate Number of SLB Leak Rate Maximum Volts Probability of 1 Used in Indications at at 95/95 Projection EOC-19 at EOC-19 or More Burst (gpm)
SG-A Cycle 17 Bound 502 1.9 2.67 x 10-)
0.195 SG-B Cycle 17 Bound 697 1.9 3.61 x 10-5 0.303 SG-C Cycle 17 Bound 547 1.8 3.14 x 10-5 0.236 Note: The growth rate for Cycle 17 bounds the growth rate observed during Cycle 18.
SG-SGMP-15-22 Revision I January 20 I 6
8-1 8
REFERENCES I.
NRC Generic Letter 95-05, "Voltage-Based Repair Criteria for Westinghouse Steam Generator Tubes Affected by Outside Diameter Stress Corrosion Cracking," USNRC Office of Nuclear Reactor Regulation, August 3, 1995.
- 2.
Westinghouse Report, SG-SGMP-14-17, Rev. I, "Beaver Valley Unit 2 End-of-Cycle 17 Analysis and Prediction for End-of-Cycle 18 Voltage-Based Repair Criteria 90-Day Report," July 2014.
- 3.
WCAP-14277, Revision I, "SLB Leak Rate and Tube Burst Probability Analysis Methods for ODSCC at TSP Intersections,"
Westinghouse Nuclear Services
- Division, December 1996.
- 4.
EPRI Report 1018047, Addendum 7 to NP-7480-L Database, "Steam Generator Tubing Outside Diameter Stress Corrosion Cracking at Tube Support Plates Database for Alternate Repair Limits," September 2008.
- 5.
Letter from A. Marion, Nuclear Energy Research Institute, to B. Sheron, Nuclear Regulatory Commission, "Refining the Leak Rate Sampling Methodology for ODSCC ARC Applications (Generic Letter 95-05)," March 15, 2002.
- 6.
Letter from W. Bateman, Nuclear Regulatory Commission, to A. Marion, Nuclear Energy Research Institute, "Refining the Leak Rate Sampling Methodology for Generic Letter 95-05 Voltage-Based Alternate Repair Criteria Application," March 27, 2002.
- 7.
Westinghouse Letter DLC-96-184, "Duquesne Light Company Beaver Valley Power Station Unit 2 Steam Generator LOCA Plus SSE Loads," June 17, 1996.
- 8.
Letter from B.W. Sheron, Nuclear Regulatory Commission, to A. Marion, Nuclear Energy Research Institute, February 9, 1996.
- 9.
Westinghouse Letter LTR-CDME-08-167, "Software Release Letter for CycleSim Version 3.2," July 30, 2008.
- 10.
Westinghouse Report SG-SGDA-05-1, Rev. I, "Beaver Valley Unit I Cycle 17 Voltage-Based Repair Criteria 90-Day Report," January 2005.
- 11.
FENOC Letter BVTS-0109, "2Rl6 Steam Generator 90 Day Alternate Repair Criteria Report Input Data Validation," January 2, 2013.
- 12.
Beaver Valley Power Station Unit 2, Updated Final Safety Analysis Report, Revision 20.
SG-SGMP-I 5-22 Revision I January 20 I 6
A-1 APPENDIX A Table A-1: DSI Indications for 2R18 in SG-A SG Row Col Locn 2R18 Comment Volts 2A 2
24 07H 0.52 SAI 2A 2
88 02H 0.29 2A 2
92 03H 0.33 2A 3
15 03H 0.8 2A 3
59 02H 0.58 2A 3
65 07H 0.66 2A 3
77 08H 0.41 SAI 2A 3
79 07H 0.39 2A 3
81 03H 0.83 2A 3
84 03H 0.59 2A 3
85 04H 0.7 2A 3
92 02H 0.27 2A 4
9 03H 0.71 2A 4
9 04H 0.48 2A 4
18 05H 0.19 2A 4
21 03H 0.65 2A 4
24 02H 0.41 2A 4
26 02H 0.37 2A 4
34 03H 0.25 2A 4
39 02H 0.25 2A 4
50 02H 0.36 2A 4
50 03H 0.83 2A 4
50 04H 0.49 2A 4
54 02H 0.58 2A 4
54 04H 0.46 2A 4
54 05H 0.46 2A 4
60 02H 0.2 2A 4
60 06H 0.34 2A 4
63 02H 0.55 2A 4
78 05H 0.27 2A 4
85 08C 0.28 2A 5
10 02H 1.15 2A 5
10 03H 0.74 2A 5
10 04H 0.51 2A 5
11 04H 0.37 2A 5
25 05H 0.71 SG-SGMP-15-22 Revision 1 January 2016
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I SG 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A SG-SGMP-I 5-22 Revision I Row Col 5
26 5
26 5
29 5
30 5
53 5
80 5
82 6
15 6
27 6
32 6
34 6
35 6
35 6
35 6
35 6
40 6
40 6
41 6
43 7
14 7
18 7
18 7
19 7
27 7
49 7
51 7
58 7
71 7
94 8
19 8
28 8
29 8
32 8
32 8
34 8
42 8
69 8
76 8
85 A-2 Locn 2R18 Comment Volts 02H 1.01 03H 0.89 02H 1.13 SAI 03H 0.43 02H 0.23 05H 0.26 03H 0.44 02H 0.39 06H 0.2 02H 0.2 02H 0.28 02H 0.78 03H 0.49 05H 0.44 08H 0.29 03H 0.33 04H 0.26 08H 0.21 SAI 02H 0.65 03H 0.34 03H 0.88 05H 0.37 03H 0.46 05H 0.34 02H 0.18 02H 0.27 03H 0.43 03H 0.23 02H 0.25 02H 0.36 02H 0.33 02H 0.26 03H 0.32 05H 0.83 SAI 03H 1.03 02H 0.28 02H 0.17 05H 0.19 02H 0.1 January 20 I 6
A-3 SG Row Col Locn 2Rl8 Comment Volts 2A 8
91 04H 0.51 2A 9
10 02H 0.85 2A 9
13 02H 0.53 2A 9
14 03H 0.2 2A 9
16 02H 0.54 2A 9
16 03H 0.66 2A 9
16 04H 0.56 2A 9
34 02H 0.23 SAI 2A 9
35 02H 0.31 2A 9
38 05H 0.83 2A 9
40 03H 0.36 2A 9
51 04H 0.61 SAI 2A 9
56 02H 0.24 2A 9
56 04H 0.5 2A 9
57 02H 0.18 2A 9
57 03H 0.65 2A 9
74 03H 0.15 2A 10 7
02H 0.85 2A 10 7
03H 0.29 2A 10 8
03H 0.3 2A 10 19 04H 0.36 2A 10 26 04H 0.2 2A 10 37 03H 0.13 2A 11 2
03H 0.56 2A 11 48 02H 0.9 2A 11 48 08H 0.4 2A 11 77 05H 0.51 2A 11 78 06H 0.39 2A 12 34 02H 0.25 2A 12 48 05H 0.31 2A 12 69 03H 0.39 2A 12 70 03H 0.47 2A 12 72 02H 0.25 2A 12 73 05H 0.17 2A 12 74 02H 0.41 2A 12 74 03H 0.58 2A 13 32 02H 0.33 2A 13 39 05H 0.7 2A 13 49 04H 0.14 SG-SGMP-15-22 Revision I January 2016
A-4 SG Row Col Locn 2Rl8 Comment Volts 2A 13 60 02H 0.46 2A 13 67 06C 0.3 2A 13 71 04H 0.41 2A 13 80 03H 0.24 2A 13 84 02H 0.53 2A 13 85 02H 0.61 2A 13 86 03H 0.4 2A 13 91 05H 0.51 2A 13 92 04H 0.45 2A 14 15 04H 0.22 2A 14 20 03H 0.27 2A 14 25 05H 0.31 2A 14 27 05H 0.28 2A 14 31 02H 0.17 2A 14 40 05H 0.28 SAi 2A 14 48 05H 0.34 2A 14 50 03H 0.25 2A 14 53 02H 0.17 2A 14 54 02H 0.48 2A 14 58 02H 0.32 2A 14 59 02H 0.14 2A 14 59 03H 0.24 2A 14 59 06H 0.44 2A 14 65 03H 0.38 2A 14 68 02H 0.34 2A 14 70 03H 0.78 2A 14 80 03H 0.21 2A 14 86 04H 0.5 2A 15 27 05H 0.21 2A 15 63 02H 0.4 2A 15 67 02H 0.31 2A 15 71 02H 0.2 2A 15 72 02H 0.38 2A 15 73 03H 0.7 2A 15 73 05H 0.31 2A 15 74 03H 0.95 2A 15 75 02H 0.47 2A 15 75 08H 0.27 SAI 2A 16 11 05H 0.15 SAi SG-SGMP-15-22 Revision I January 2016
A-5 SG Row Col Locn 2R18 Comment Volts 2A 16 52 02H 0.49 2A 16 53 03H 0.35 2A 16 62 08H 0.12 2A 16 66 03H 0.42 2A 16 70 03H 0.47 2A 16 72 02H 0.19 2A 16 76 02H 0.37 2A 16 77 05H 0.13 2A 17 10 03H 0.23 2A 17 27 04H 0.25 2A 17 32 05H 0.51 2A 17 46 02H 0.81 2A 17 59 02H 0.27 2A 17 59 05H 0.14 2A 17 81 03H 0.27 2A 17 81 04H 0.24 2A 17 84 03H 0.26 2A 18 7
04H 0.17 2A 18 10 03H 0.6 2A 18 10 04H 0.19 2A 18 27 07H 0.21 2A 18 47 02H 0.24 2A 18 47 05H 0.4 2A 18 57 02H 0.67 2A 18 88 05H 0.14 2A 19 7
02H 0.56 2A 19 7
03H 0.31 SAi 2A 19 8
03H 0.37 2A 19 15 03H 0.27 2A 19 15 04H 0.22 2A 19 56 03H 0.25 2A 19 57 02H 0.65 2A 19 57 04H 0.23 2A 19 60 02H 0.11 2A 20 9
03H 0.22 2A 20 10 04H 0.31 2A 20 12 02H 0.29 2A 20 22 02H 0.32 2A 20 22 03H 0.4 SG-SGMP-15-22 Revision 1 January 2016
A-6 SG Row Col Loco 2R18 Comment Volts 2A 20 22 08H 0.27 2A 20 57 02H 0.11 2A 20 62 05H 0.49 2A 20 75 05H 0.2 2A 20 78 04H 0.16 2A 20 85 03H 0.16 2A 21 18 04H 0.39 2A 21 25 03H 0.18 2A 21 26 05H 0.42 2A 21 34 02H 0.3 2A 21 43 02H 0.1 2A 21 46 02H 0.22 2A 21 55 02H 0.14 2A 21 72 03H 0.48 2A 21 73 03H 0.8 2A 21 78 08H 0.1 2A 22 7
02H 0.38 2A 22 21 02H 0.19 2A 22 21 03H 0.19 2A 22 23 02H 0.19 2A 22 25 02H 0.26 2A 23 11 02H 0.9 2A 23 11 03H 0.24 2A 23 19 02H 0.89 2A 23 20 02H 0.23 2A 23 21 03H 0.17 2A 23 53 02H 0.45 SAi 2A 23 87 04H 0.34 2A 24 16 02H 0.27 2A 24 16 03H 0.11 2A 24 23 05H 0.65 SAI 2A 24 24 02H 0.27 2A 24 33 03H 0.26 2A 24 52 02H 0.21 2A 24 63 05H 0.34 2A 25 21 02H 0.12 2A 25 22 02H 0.46 2A 25 30 04H 0.46 2A 26 15 03H 0.17 SG-SGMP-15-22 Revision 1 January 2016
A-7 SG Row Col Locn 2R18 Comment Volts 2A 26 19 04H 0.28 2A 26 42 02H 0.34 2A 26 80 05H 0.22 2A 27 32 02H 0.34 2A 27 33 03H 0.57 2A 27 34 04H 0.25 2A 27 42 04H 0.23 SAi 2A 27 42 05H 0.22 2A 27 47 02H 0.45 2A 27 64 02H 0.19 2A 27 75 05H 0.28 2A 28 13 03H 0.3 2A 28 26 04H 0.34 2A 28 41 02H 0.33 2A 28 45 02H 0.42 2A 28 46 03H 0.36 2A 28 54 02H 0.22 2A 28 56 03H 0.5 2A 28 66 04H 0.1 SAi 2A 29 24 04H 0.39 2A 29 54 03H 0.29 MAI 2A 29 65 02H 0.33 2A 30 19 02H 0.31 2A 30 22 02H 0.45 2A 30 28 03H 0.26 2A 30 38 02H 0.12 2A 30 58 04H 0.31 2A 30 63 08H 0.23 2A 30 68 02H 0.36 2A 31 14 04H 0.25 2A 31 18 02H 0.92 2A 31 18 03H 0.42 2A 32 22 02H 0.36 2A 32 27 03H 0.3 2A 32 38 03H 0.26 2A 32 45 02H 0.54 2A 32 51 05H 0.25 2A 32 53 03H 0.39 2A 33 18 02H 0.19 SG-SGMP-15-22 Revision 1 January 2016
A-8 SG Row Col Locn 2R18 Comment Volts 2A 33 18 03H 0.34 2A 33 42 05H 0.23 2A 33 45 07H 0.25 2A 33 54 06H 0.23 2A 33 57 04H 0.44 2A 33 66 02H 0.55 2A 34 52 02H 0.28 2A 34 53 02H 0.42 2A 34 56 05H 0.54 2A 35 45 02H 0.53 2A 36 28 03H 0.48 2A 36 28 04H 0.14 2A 36 44 03H 0.32 2A 36 46 06H 0.21 2A 37 39 03H 0.37 2A 37 42 03H 0.42 2A 37 54 05H 0.2 2A 37 56 02H 0.3 2A 37 56 03H 0.61 2A 38 40 05H 0.35 2A 38 44 02H 0.42 2A 39 23 02H 1.23 2A 39 42 02H 0.58 2A 39 46 02H 0.49 2A 39 57 03H 0.24 2A 40 37 03H 0.82 2A 40 44 06C 0.19 2A 42 64 04H 0.5 2A 44 35 03H 0.5 2A 44 58 06H 0.13 2A 46 52 06H 0.29 SG-SGMP-15-22 Revision I January 2016
A-9 Table A-2: DSI Indications for 2R18 in SG-B SG Row Col Locn 2Rl8 Comment Volts 2B 1
43 02H 0.47 2B 1
52 02H 0.19 2B 1
56 02H 0.28 28 1
57 04H 0.72 2B 2
24 02H 0.43 2B 2
28 02H 0.61 2B 2
54 04H 0.24 28 2
62 03H 0.58 2B 2
63 04H 0.32 2B 2
67 06H 0.26 2B 2
70 05H 0.77 28 2
73 03H 0.43 28 2
73 04H 0.38 2B 2
94 04H 0.46 2B 3
32 03H 0.29 2B 3
54 02H 0.38 2B 3
55 02H 0.63 28 3
60 02H 0.58 2B 3
60 03H 0.57 28 3
61 06H 0.27 2B 3
62 03H 0.41 2B 3
62 04H 0.29 28 3
63 02H 0.66 2B 3
63 03H 0.53 2B 3
72 03H 0.58 28 3
88 04H 0.6 2B 3
89 04H 0.45 2B 4
23 02H 0.32 2B 4
23 06H 0.28 2B 4
32 03H 0.13 2B 4
36 04H 0.1 SAI 2B 4
41 04H 0.25 2B 4
43 02H 0.2 2B 4
44 02H 0.41 2B 4
48 03H 0.46 2B 4
52 03H 0.58 2B 4
54 02H 0.53 2B 4
56 04H 0.22 SG-SGMP-15-22 Revision 1 January 2016
A-10 SG Row Col Locn 2R18 Comment Volts 28 4
57 02H 0.38 28 4
57 04H 0.2 28 4
58 02H 0.35 28 4
59 02H 0.49 28 4
59 03H 0.25 28 4
63 04H 0.57 28 5
10 02H 0.62 28 5
12 03H 0.23 28 5
14 03H 0.58 28 5
20 03H 0.35 28 5
22 04H 0.47 28 5
28 02H 0.62 28 5
52 02H 0.89 28 5
54 02H 0.28 28 5
54 03H 0.23 28 5
56 03H 0.53 28 5
58 02H 0.21 28 5
60 02H 0.31 28 5
63 04H 0.16 28 5
64 02H 0.43 28 5
64 03H 0.39 28 5
68 02H 0.49 28 5
71 02H 0.5 28 5
73 02H 0.43 28 5
75 04H 0.17 28 5
81 05H 0.24 28 5
92 02H 0.5 28 5
93 03H 0.33 28 6
16 03H 0.26 28 6
23 04H 0.25 28 6
26 02H 0.25 28 6
27 03H 0.29 SAi 28 6
52 02H 0.12 28 6
53 02H 0.35 28 6
53 03H 0.06 28 6
58 02H 0.56 28 6
61 08H 0.16 28 6
63 02H 0.2 28 6
66 03H 1.15 SG-SGMP-15-22 Revision I January 2016
A-11 SG Row Col Locn 2R18 Comment Volts 2B 6
70 05H 0.56 2B 7
52 02H 0.7 2B 7
54 02H 0.07 2B 7
56 02H 0.58 2B 7
56 06C 0.15 2B 7
63 07H 0.34 2B 7
70 04H 0.72 2B 7
70 05H 0.3 2B 7
75 02H 0.14 2B 8
2 03H 0.2 2B 8
9 02H 0.44 2B 8
9 03H 0.28 2B 8
18 02H 0.49 2B 8
18 03H 0.51 2B 8
20 02H 0.25 2B 8
22 02H 0.17 2B 8
37 03H 0.41 2B 8
53 02H 0.7 2B 8
56 03H 0.38 2B 8
57 08H 0.2 2B 8
59 02H 0.41 2B 9
4 03H 0.34 SAI 2B 9
5 03H 0.27 2B 9
8 03H 0.22 2B 9
11 02H 0.58 2B 9
11 03H 0.39 2B 9
16 03H 0.19 2B 9
17 02H 0.53 2B 9
17 03H 0.36 2B 9
18 02H 0.34 2B 9
18 03H 0.5 2B 9
26 02H 0.46 2B 9
26 03H 0.78 2B 9
52 02H 0.86 2B 9
52 03H 0.33 2B 9
59 03H 0.59 2B 9
59 05H 0.28 2B 9
64 04H 0.74 SAI 2B 9
72 04H 0.65 SG-SGMP-15-22 Revision 1 January 2016
A-12 SG Row Col Locn 2R18 Comment Volts 2B 9
80 02H 0.53 2B 9
85 02H 0.86 28 9
92 02H 0.43 2B 9
93 02H 0.29 28 10 6
02H 0.58 2B 10 10 02H 0.17 2B 10 14 02H 0.43 28 10 15 02H 0.36 28 10 17 02H 0.39 2B 10 18 02H 0.57 2B 10 26 02H 0.59 28 10 37 03H 0.21 2B 10 41 07H 0.35 2B 10 50 02H 0.3 2B 10 50 03H 0.35 28 10 52 02H 1.17 2B 10 52 04H 0.38 2B 10 53 02H 0.35 2B 10 54 02H 0.46 2B 10 56 02H 0.25 28 10 58 05H 0.29 2B 10 63 02H 0.44 28 10 71 05H 0.38 2B 10 78 04H 0.26 2B 10 80 03H 0.24 28 10 82 03H 0.31 28 10 88 04C 0.14 2B 10 89 02H 0.38 28 11 8
03H 0.24 2B 11 8
04H 0.14 2B 11 9
06H 0.15 28 11 9
07H 0.28 2B 11 18 02H 0.58 2B 11 20 02H 0.52 28 11 21 03H 0.3 2B 11 25 03H 0.44 SAI 28 11 35 02H 0.14 28 11 42 03H 0.19 28 11 53 02H 0.37 SG-SGMP-15-22 Revision 1 January 2016
A-13 SG Row Col Locn 2Rl8 Comment Volts 2B 11 53 08C 0.33 2B 11 57 03H 0.24 2B 11 58 03H 0.4 2B 11 58 04H 0.23 2B 11 61 02H 1
2B 11 61 03H 0.68 2B 11 64 03H 0.48 2B 11 75 02H 0.86 2B 11 75 03H 0.44 2B 11 83 03H 0.26 2B 11 83 04H 0.43 2B 12 10 02H 0.56 2B 12 15 02H 0.29 2B 12 15 03H 0.59 2B 12 16 03H 0.13 2B 12 22 02H 0.47 2B 12 24 02H 0.38 2B 12 24 04H 0.25 2B 12 51 02H 0.13 2B 12 52 02H 0.26 2B 12 52 03H 0.65 2B 12 61 03H 0.97 2B 13 16 02H 0.68 plug 2B 13 16 03H 0.18 plug 2B 13 16 06H 0.41 plug 2B 13 37 03H 0.34 2B 13 39 07H 0.13 2B 13 47 02H 0.24 SAi 2B 13 53 02H 0.68 2B 13 56 03H 0.31 2B 13 73 02H 0.39 2B 13 77 03H 1.05 2B 13 78 02H 0.1 2B 13 85 02H 0.26 2B 13 86 02H 0.16 2B 13 91 02H 0.34 2B 14 8
03H 0.2 2B 14 13 02H 0.48 2B 14 15 03H 0.5 SG-SGMP-15-22 Revision 1 January 2016
A-14 SG Row Col Loco 2R18 Comment Volts 2B 14 18 02H 0.48 2B 14 25 02H 0.51 2B 14 27 03H 0.27 2B 14 28 05H 0.22 2B 14 32 02H 0.31 2B 14 35 06H 0.26 2B 14 36 03H 0.25 28 14 39 02H 0.07 2B 14 54 02H 0.64 28 14 54 03H 0.56 2B 14 57 02H 0.48 2B 14 57 03H 0.52 2B 14 61 02H 0.21 2B 14 61 03H 0.63 2B 14 61 05H 0.48 2B 14 63 03H 0.65 2B 14 70 02H 0.53 2B 14 84 04H 0.36 2B 14 88 02H 0.23 2B 15 12 03H 0.14 2B 15 26 03H 0.39 2B 15 26 07H 0.27 2B 15 27 02H 0.27 28 15 36 02H 0.24 2B 15 51 02H 0.24 SAi, plug 28 15 52 02H 0.61 2B 15 71 05H 0.47 2B 15 75 02H 0.22 2B 15 75 04H 0.27 2B 15 80 04H 0.4 2B 15 87 02H 0.23 2B 15 89 02H 0.34 28 16 27 03H 0.48 2B 16 29 02H 0.17 SAI 28 16 31 02H 0.3 2B 16 31 07H 0.19 2B 16 37 02H 0.35 28 16 37 04H 0.2 SAI 28 16 44 02H 0.46 SG-SGMP-15-22 Revision I January 2016
A-15 SG Row Col Locn 2R18 Comment Volts 2B 16 55 05H 0.32 2B 16 61 02H 0.38 2B 16 71 02H 0.17 2B 17 35 03H 0.53 2B 17 42 03H 0.62 2B 17 42 04H 0.46 2B 17 44 02H 0.29 SAI 2B 17 64 02H 0.13 2B 17 68 02H 0.66 2B 17 68 03H 0.39 2B 17 68 04H 0.76 SAi 2B 17 83 06C 0.12 2B 18 12 03H 0.25 2B 18 18 02H 0.17 2B 18 28 04H 0.41 2B 18 29 02H 0.81 2B 18 30 04H 0.23 2B 18 36 03H 0.94 2B 18 37 03H 0.53 2B 18 38 03H 0.61 2B 18 42 02H 0.3 2B 18 53 03H 0.5 2B 18 53 04H 0.2 2B 18 54 02H 0.95 2B 18 57 03H 0.12 2B 18 58 02H 0.54 2B 18 61 03H 0.4 2B 18 64 03H 0.44 2B 18 69 05H 0.47 2B 18 76 03H 0.36 2B 19 15 02H 0.25 2B 19 15 04H 0.19 2B 19 29 02H 0.9 2B 19 29 03H 0.97 2B 19 36 02H 0.9 2B 19 39 03H 0.67 2B 19 39 04H 0.47 2B 19 40 03H 0.45 2B 19 45 02H 0.37 SG-SGMP-15-22 Revision 1 January 2016
A-16 SG Row Col Loco 2R18 Comment Volts 28 19 50 03H 0.64 28 19 51 02H 0.68 28 19 51 03H 0.58 28 19 69 02H 0.77 28 19 71 05H 0.57 28 19 74 02H 0.13 28 19 76 02H 0.51 28 19 78 02H 0.26 28 19 85 02H 0.14 28 20 11 02H 1.09 28 20 16 03H 0.43 28 20 19 04H 0.1 28 20 23 02H 0.17 SAi 28 20 70 02H 0.14 28 20 81 02H 0.27 28 20 89 02H 0.5 28 21 45 04H 0.34 28 21 53 03H 0.46 28 21 53 05H 0.22 28 21 54 02H 1.46 28 21 75 02H 0.18 28 22 12 03H 0.13 28 22 18 03H 0.7 SAi 28 22 36 03H 0.24 28 22 52 02H 0.22 28 22 52 03H 0.27 28 22 53 02H 0.15 28 22 61 05H 0.21 28 22 62 03H 0.48 28 22 64 02H 0.52 28 23 33 03H 0.39 28 23 37 04H 0.68 SAi 28 23 56 02H 0.26 28 23 61 02H 0.3 28 23 63 03H 0.29 28 23 63 05H 0.2 28 23 67 05H 0.22 28 23 86 02H 0.22 28 24 29 05H 0.29 SG-SGMP-I 5-22 Revision I January 2016
A-17 SG Row Col Loco 2Rl8 Comment Volts 2B 24 30 03H 0.3 I 2B 24 32 03H 0.29 2B 24 42 02H 0.87 2B 24 51 08H 0.73 2B 24 52 02H 0.54 2B 24 56 02H 0.34 2B 24 58 03H 0.26 2B 24 62 03H 0.54 2B 24 63 03H 0.5 28 24 65 02H 0.16 28 24 68 08H 0.17 2B 24 71 05H 0.23 2B 24 84 05H 0.26 28 25 17 02H 0.13 2B 25 24 03H 0.46 28 25 29 02H 0.23 2B 25 64 06H 0.42 28 25 79 08H 0.38 28 26 30 03H 0.62 2B 26 39 03H 0.15 28 26 78 02H 0.35 2B 27 46 06H 0.26 28 27 52 04H 0.54 28 27 53 03H 0.27 28 27 68 02H 0.23 28 28 41 02H 0.28 28 28 63 03H 0.27 28 28 67 03H 0.29 28 28 81 02H 0.16 28 29 20 03H 0.57 28 29 27 03H 0.58 2B 29 31 05H 0.26 28 29 32 03H 0.14 28 29 32 05H 0.26 28 29 34 03H 0.38 2B 29 35 04H 0.34 SAI 28 29 37 03H 0.65 2B 29 38 02H 0.44 MAI 28 29 40 03H 0.82 SG-SGMP-15-22 Revision 1 January 2016
A-18 SG Row Col Locn 2Rl8 Comment Volts 28 29 41 02H 0.41 2B 29 56 02H 1.08 28 30 16 04H 0.21 28 30 20 04H 0.19 28 30 27 02H 0.34 28 30 32 03H 0.19 28 30 50 04H 1.01 28 30 55 03H 0.63 28 30 59 04H 0.23 28 30 78 02H 0.34 28 30 78 04H 0.28 28 30 79 02H 0.31 28 30 81 03H 0.29 28 31 21 07H 0.24 28 31 23 02H 0.79 2B 31 32 03H 0.41 28 31 32 05H 0.33 28 31 37 03H 0.51 28 31 39 02H 0.17 28 31 39 03H 0.6 28 31 48 02H 0.75 28 31 52 02H 0.64 28 31 71 05H 0.23 28 31 76 02H 0.44 28 31 78 02H 0.38 28 31 78 03H 1.04 28 32 16 08H 0.28 2B 32 29 05H 0.23 28 32 31 02H 0.33 SAi 28 32 53 02H 0.74 28 32 55 02H 0.63 28 32 55 05H 0.22 28 32 61 02H 0.27 28 32 61 05H 0.43 28 32 77 02H 0.37 28 33 31 07H 0.41 28 33 32 02H 0.13 28 33 37 04H 0.17 28 33 44 02H 0.43 SG-SGMP-15-22 Revision 1 January 2016
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SG 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B 2B SG-SGMP-I 5-22 Revision I Row Col 33 62 34 18 34 32 34 35 34 37 34 48 34 48 34 48 34 51 34 51 34 57 35 40 36 25 36 42 36 58 37 24 37 32 37 57 37 57 38 35 38 63 39 31 39 33 40 31 40 42 41 31 41 52 42 51 44 48 A-19 Locn 2Rl8 Comment Volts 02H 0.86 08H 0.14 02H 0.24 03H 0.28 03H 0.43 02H 0.52 SAi 03H 0.5 04H 0.28 02H 0.8 03H 0.41 02H 0.3 02H 0.31 05H 0.33 03H 0.24 05H 0.24 05H 0.11 03H 0.61 02H 0.35 05H 0.15 02H 0.55 03H 0.2 05H 0.22 03H 0.29 05H 0.2 02H 0.36 05H 0.27 08C 0.25 04H 0.25 02H 0.61 January 2016
A-20 Table A-3: DSI Indications for 2R18 in SG-C SG Row Col Locn 2R18 Comment Volts 2C 2
78 03H 0.18 2C 2
80 03H 0.19 2C 2
85 03H 0.42 2C 3
8 04H 0.36 2C 3
9 06H 0.19 2C 3
18 03H 0.32 2C 3
35 05H 0.21 2C 3
39 07H 0.37 2C 3
45 02H 0.7 2C 3
58 02H 0.42 2C 3
60 02H 0.52 2C 3
60 03H 0.34 2C 3
64 02H 0.21 2C 3
64 03H 0.61 2C 3
80 02H 0.54 2C 3
90 06H 0.35 2C 3
93 04H 0.34 2C 4
3 04H 0.32 2C 4
26 03H 0.85 2C 4
33 02H 0.4 2C 4
39 07H 0.51 SAi 2C 4
48 02H 0.27 2C 4
49 03H 0.53 2C 4
69 03H 0.38 2C 4
76 03H 0.22 2C 5
6 03H 0.71 2C 5
6 04H 0.16 2C 5
7 02H 0.45 2C 5
7 03H 0.82 2C 5
15 03H 0.28 2C 5
18 02H 0.38 2C 5
19 02H 0.37 2C 5
19 03H 0.27 2C 5
62 02H 0.17 2C 5
66 03H 0.52 2C 5
71 02H 0.25 2C 5
76 03H 0.47 2C 5
86 08H 1.08 SG-SGMP-15-22 Revision I January 2016
A-21 SG Row Col Locn 2Rl8 Comment Volts 2C 5
89 02H 0.65 2C 6
23 02H 0.28 2C 6
30 02H 0.23 2C 6
30 03H 0.24 2C 6
54 03H 0.58 2C 6
55 02H 0.29 2C 6
63 02H 0.57 2C 6
78 03H 1.04 2C 6
84 03H 0.25 2C 6
92 04H 0.36 2C 7
40 03H 0.73 2C 7
40 04H 0.58 2C 7
49 02H 0.59 2C 7
49 03H 0.29 2C 7
58 02H 0.58 2C 7
67 02H 0.47 2C 7
80 03H 0.23 2C 8
2 08H 0.41 2C 8
23 02H 0.65 2C 8
24 02H 0.68 2C 8
43 03H 0.27 2C 8
63 06H 0.14 2C 8
72 03H 0.28 2C 8
84 03H 0.2 2C 9
13 03H 0.14 2C 9
20 04H 0.46 2C 9
26 03H 0.26 2C 9
30 02H 0.31 2C 9
32 02H 0.76 2C 9
35 02H 0.57 2C 9
37 02H 0.58 2C 9
38 03H 0.35 2C 9
39 05H 0.27 2C 9
41 02H 0.31 2C 9
44 03H 0.25 2C 9
45 05H 0.42 2C 9
45 06H 0.25 2C 9
47 02H 0.66 2C 9
54 02H 0.43 SG-SGMP-15-22 Revision 1 January 2016
A-22 SG Row Col Locn 2Rl8 Comment Volts 2C 9
54 04H O.I 9 2C 9
65 06H 0.22 2C IO 8
02H 0.89 2C IO 9
03H 0.24 2C IO IO 02H 0.66 2C 10 IO 03H 0.52 2C 10 I8 04H O.I4 2C IO 24 03H 0.34 2C IO 36 02H 0.3 2C 10 37 02H 0.81 2C IO 38 07H 0.29 2C IO 43 02H 0.39 2C IO 44 02H 0.33 2C 10 51 02H 1.22 2C IO 5I 05H 0.68 2C IO 54 02H 0.76 2C IO 54 03H 0.35 2C IO 72 02H 0.38 2C IO 72 03H O.I5 2C IO 78 03H 0.44 2C 1 I 7
02H 0.5I 2C I I 9
03H 0.54 2C I I I7 02H 0.8 2C I I 36 02H 0.46 2C I 1 42 02H 1.29 2C I I 49 02H 0.62 2C I I 49 03H 0.86 2C I I 62 03H 0.63 2C I I 70 03H 0.57 2C I I 72 03H 0.3 I 2C I I 88 05H 0.55 2C I2 9
02H 0.64 2C I2 30 02H 0.4 I 2C I2 35 04H O.I3 2C I2 55 02H 0.68 2C 12 70 02H 0.36 2C I2 70 03H 0.25 2C I2 83 03H O.I 2C 13 32 02H O.I 7 SG-SGMP-15-22 Revision 1 January 2016
A-23 SG Row Col Locn 2R18 Comment Volts 2C 13 43 02H 0.25 2C 13 43 03H 0.39 2C 13 59 03H 0.36 2C 13 63 02H 0.29 2C 13 64 02H 0.68 2C 14 29 04H 0.29 SAi 2C 14 38 02H 0.5 2C 14 39 05H 0.19 2C 14 50 02H 0.85 2C 14 54 02H 0.44 2C 14 59 03H 0.19 2C 14 70 08H 0.2 2C 15 5
04H 0.52 2C 15 14 03H 0.33 2C 15 35 02H 0.16 2C 15 35 03H 0.56 2C 15 38 04H 0.53 SAi 2C 15 39 02H 0.7 2C 15 39 03H 0.45 2C 15 61 02H 0.27 2C 15 62 02H 0.26 2C 15 80 03H 0.3 2C 15 87 03H 0.27 2C 16 15 03H 0.49 2C 16 17 02H 0.35 2C 16 46 02H 0.86 2C 16 46 04H 0.3 2C 16 55 06H 0.28 2C 16 57 03H 0.4 2C 16 63 02H 0.17 2C 16 73 02H 0.39 2C 17 9
04H 0.25 SAi 2C 17 14 04H 0.17 2C 17 17 02H 0.28 2C 17 18 02H 0.42 2C 17 24 04H 0.11 2C 17 26 03H 0.23 2C 17 35 03H 0.83 SAi 2C 17 43 02H 0.51 SG-SGMP-15-22 Revision 1 January 2016
I I
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SG 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C SG-SGMP-15-22 Revision 1 Row Col 17 48 17 49 17 50 17 61 17 61 17 63 17 66 17 67 17 68 18 15 18 47 18 48 18 48 18 48 18 50 18 51 18 53 18 54 18 54 18 55 18 62 18 62 18 62 18 67 18 67 18 73 19 26 19 29 19 48 19 48 19 54 19 57 19 57 19 79 20 75 20 76 20 76 20 85 21 18 A-24 Locn 2R18 Comment Volts 02H 0.64 02H 0.49 03H 0.56 SAi 02H 0.9 03H 0.28 02H 0.53 02H 0.19 02H 0.5 02H 0.33 06H 0.14 03H 0.36 02H 0.82 03H 0.72 04H 0.71 02H 0.25 02H 0.73 02H 0.73 02H 0.69 03H 0.51 02H 0.41 02H 0.5 03H 0.56 04H 0.16 02H 0.37 03H 0.58 03H 0.29 03H 0.25 02H 0.41 02H 0.48 03H 0.7 02H 0.38 04H 0.46 05H 0.63 02H 1.02 02H 0.36 02H 0.61 SAI 03H 0.83 03H 0.22 02H 0.34 January 2016
I I
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SG 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C 2C SG-SGMP-15-22 Revision I Row Col 21 18 21 25 21 62 21 67 22 18 22 18 22 20 22 24 22 33 22 61 22 64 22 75 22 77 23 10 23 28 23 37 23 39 23 39 23 42 23 42 23 69 23 77 24 34 24 48 24 50 24 56 24 57 24 61 24 63 25 17 25 26 25 29 25 31 25 33 25 34 25 34 25 34 25 47 25 47 A-25 Loco 2R18 Comment Volts 03H 0.36 04H 0.1 02H 0.42 07H 0.21 02H 0.41 05H 0.3 02H 1.3 03H 0.18 02H 0.38 03H 0.19 03H 0.33 04H 0.45 SAi 03H 0.19 02H 0.35 03H 0.37 02H 0.71 02H 0.47 05H 0.44 02H 0.43 03H 0.5 03H 0.24 02H 0.35 08H 0.35 03H 0.68 02H 0.31 03H 0.69 02H 0.39 02H 0.76 04H 0.2 03H 0.3 04H 0.13 03H 0.41 plug 02H 0.53 08H 0.53 02H 0.78 03H 0.52 05H 0.66 03H 0.53 08H 0.28 January 2016
A-26 SG Row Col Loco 2R18 Comment Volts 2C 25 54 02H 0.23 2C 25 60 02H 0.47 2C 25 61 02H 0.55 2C 25 62 04H 0.4 2C 25 65 02H 0.62 2C 25 74 02H 0.18 SAi 2C 25 76 02H 0.84 2C 25 76 05H 0.33 2C 25 79 02H 0.41 2C 26 24 06H 0.2 2C 26 38 05H 0.11 2C 26 39 05H 0.45 2C 26 42 02H 0.57 2C 26 44 06H 0.2 2C 26 65 03H 0.18 2C 26 70 03H 0.67 2C 26 72 08H 0.34 2C 27 20 02H 0.61 2C 27 22 02H 0.4 2C 27 24 04H 0.26 2C 27 30 02H 0.66 plug 2C 27 31 02H 0.82 2C 27 60 02H 0.59 2C 27 69 02H 0.25 2C 27 76 03H 0.45 2C 28 27 05H 0.35 2C 28 35 02H 0.76 2C 28 42 02H 0.33 2C 28 42 04H 0.15 2C 28 44 02H 0.34 2C 28 50 03H 0.29 2C 28 73 03H 0.19 2C 28 85 02H 0.46 2C 29 11 05H 0.49 2C 29 26 05H 0.71 2C 29 29 03H 0.96 2C 29 37 02H 0.44 2C 29 38 05H 0.23 2C 29 43 03H 0.29 SG-SGMP-15-22 Revision 1 January 2016
A-27 SG Row Col Locn 2R18 Comment Volts 2C 29 47 02H 0.41 2C 29 48 05H 0.25 2C 29 57 05H 0.35 2C 29 63 05H 0.77 2C 30 12 03H 0.25 2C 30 24 02H 0.5 2C 30 25 04H 0.12 2C 30 31 03H 0.42 2C 30 31 04H 0.38 2C 30 41 02H 0.19 2C 30 60 02H 0.66 2C 30 61 02H 0.77 2C 30 61 04H 0.38 SAI 2C 31 14 05H 0.22 2C 31 17 04H 0.25 2C 31 22 02H 0.23 2C 31 29 04H 0.31 2C 31 49 02H 0.28 2C 31 60 02H 0.31 2C 31 61 03H 0.51 2C 31 61 04H 0.17 2C 31 64 04H 0.5 SAi 2C 31 66 02H 0.65 2C 31 66 05H 0.3 2C 31 75 02H 0.17 SAi 2C 31 77 06H 0.25 2C 31 81 02H 1.23 2C 32 19 05H 0.25 2C 32 25 03H 0.24 2C 32 63 03H 0.35 SAi 2C 33 34 06H 0.32 2C 33 60 07H 0.17 2C 34 24 07H 0.12 2C 34 39 05H 0.21 2C 34 55 03H 0.14 2C 34 58 02H 0.61 2C 34 58 04H 0.22 2C 34 58 05H 0.28 2C 34 59 02H 0.74 SG-SGMP-15-22 Revision 1 January 2016
A-28 SG Row Col Locn 2Rl8 Comment Volts 2C 35 22 02H 0.2 2C 35 34 03H 0.29 2C 35 34 04H 0.16 2C 35 38 07H 0.15 2C 35 53 06H 0.21 2C 36 20 03H 0.81 2C 36 26 05H 0.58 2C 36 27 05H 0.28 2C 36 53 02H 0.97 SAi 2C 37 26 05H 0.07 2C 37 35 03H 0.38 2C 37 52 06H 0.15 2C 38 42 05H 0.11 2C 39 27 04H 0.41 2C 40 25 03H 0.2 2C 40 39 03H 0.11 2C 40 53 04H 0.65 2C 41 27 04H 0.32 2C 41 44 04H 0.22 2C 41 50 08H 0.18 2C 42 32 04H 0.29 SG-SGMP-15-22 Revision 1 January 2016
Enclosure B L-16-022 Unit #2-2R18 Steam Generator F* (F Star) Report (6 Pages Follow)
FIRST ENERGY NUCLEAR OPERATING COMPANY Technical Services Engineering Department Nuclear Engineering Programs Section Beaver Valley Power Station Issue Date: November 24, 2015
Subject:
Unit #2 - 2R18 Steam Generator F* (F Star) Report Date:
12-02-ts
/"1' Reviewed by: Charlie O'Neill
~~
Supervisor, Nuclear Engineering Programs Date: ld-/?/ts-Approved by: Pat Pauvlinch ~
.Gv--
Date:
Manager, Technical Services Engineering
UNIT #2 -2R18 STEAM GENERATOR F* (F STAR) REPORT Technical Specification 5.6.6.2.4 requires that a report be submitted to the Nuclear Regulatory Commission (NRG) within 90 days after the initial entry into MODE 4 following an outage in which the F*
methodology was applied. For the fall 2015 refueling outage (2R18), the initial entry into MODE 4 occurred on November 25, 2015.
Per Technical Specification 5.6.6.2.4, the following information is to be submitted to the NRC:
(a) Total number of indications, location of each indication, orientation of each indication, severity of each indication, and whether the indications initiated from the inside or outside surface.
This information can be found in Tables 2RCS-SG21A, 2RCS-SG21B and 2RCS-SG21C.
(b) The cumulative number of indications detected in the tubesheet region as a function of elevation within the tubesheet.
This information can be found in Attachment A: "Unit 2 - Cumulative Listing of Tubesheet Indications (All Outages)".
(c) The projected end-of-cycle accident-induced leakage from tubesheet indications.
This information can be found in the right hand column of Tables 2RCS-SG21A, 2RCS-SG21 B and 2RCS-SG21C. It is also explained in Note 4 under Notes for All Tables on Page 3.
Discussion:
During 2R 18, the Plus Point probe was utilized to inspect the steam generator (SG) top of tubesheet region in both the hot and cold legs. The 2R18 inspection scope included 100 percent of the inservice hot leg tubes in all three steam generators plus a twenty percent random sample of the inservice cold leg tubes in 2RCS-SG21A. The inspection distance for either leg was from 6.0 inches above the top of tubesheet to 3.0 inches below the top of tubesheet. This inspection distance bounds the required F*
examination distance (that is, the expanded portion of the tube below the bottom of roll expansion transition) of 2.22 inches below the bottom of the roll expansion transition.
There are ten tubes located on the hot leg side of the SGs that have roll expansion transitions at lower than nominal elevations. The ten hot leg tubes with the deeper roll transition locations were inspected to a depth of 5.0 inches below the top of tubesheet to ensure the F* distance was adequately examined. In the cold leg side of 2RCS-SG21A, there are three tubes with lower than nominal roll transition locations.
These three tubes on the cold leg side of 2RCS-SG21A were tested to a depth 5.0" below the top of tubesheet to ensure the F* distance was adequately examined.
The morphology for the majority of the indications being reported from the hot leg top of tubesheet region is believed to be outside diameter stress corrosion cracking (ODSCC). This is based on signal recognition and the location of the reported indications. Both axial and circumferentially orientated indications were observed. Circumferential indications located above the top of tubesheet remain bounded by the expansion transition. One tube in the 2RCS-SG21 B hot leg was reported with a single axial primary water stress corrosion cracking (PWSCC) indication.
None of the indications that were reported during the 2R 18 SG examinations represented a (Cycle 18) leakage potential at postulated main steam line break {MSLB) conditions nor did the 2R 18 indications challenge the structural integrity performance criteria.
The projected accident induced leakage from all combined sources (sleeves, plugs, indications left in-service under Generic Letter 95-05 and other degradation within the tube bundle) remains well below the 2.2 gallons per minute {gpm) per SG allowed by the Technical Specifications.
Page 2 of6
The following information and Tables summarize the degradation observed during the 2R18 top of tubesheet region examinations.
Notes for all Tables:
- 1)
Under the Elevation column, TSH -Top of tubesheet (Hot Leg). +0.00" is located at the secondary side face of tubesheet. A negative measurement is the distance into the tubesheet from the secondary side face.
- 2)
Under the Orientation column, SAi - Single axial indications; SCI/MCI - Single or multiple circumferential indications.
- 3)
Under the Severity columns, this data has been re-analyzed utilizing the Plus Point probe 300 kHz channel which provides the most accurate sizing technique and is used for assessing the severity of the indications. The reported arc lengths are taken from the data resolution process. Profile analysis shows these measurements to be generally conservative.
- 4)
Indications reported within the 3.0" (5.0" for particular tube locations) inspection distance below the top-of-tubesheet were removed from service during 2R18. The projected end of cycle (EOC) accident induced leakage from these indications is considered zero.
2RCS-SG21A Hot Leg Tubesheet:
There were nineteen indications in eighteen tubes. Fourteen indications were located at or slightly below the top of tubesheet (Thirteen were single circumferential ODSCC indications and one was a multiple circumferential ODSCC indication). The remaining five indications were located above the top of tubesheet (Four were single circumferential ODSCC indications and one was a single axial ODSCC indication}.
2RCS-SG21A Cold Leg Tubesheet:
No indications were reported from the 20% random sample inspection of the cold leg tubesheet region.
Table 2RCS-SG21A Indication Location Severity Initiation Projected SG Row Column Elevation Orientation Volts Axial Arc Surface/
EOC Length Length Degradation Leakage A
8 37 TSH -0.02" SCI 0.06 43° ODSCC Zero A
9 44 TSH -0.09" SCI 0.10 95° ODS CC Zero A
11 36 TSH +0.00" SCI 0.13 92° ODSCC Zero A
11 42 TSH -0.02" MCI 0.10 59° ODSCC Zero 44 TSH -0.01" SCI 0.13 goo ODSCC Zero A
11 TSH -0.04" SCI 0.10 80° ODSCC Zero A
14 38 TSH -0.10" SCI 0.16 91° ODSCC Zero A
17 18 TSH -0.04" SCI 0.12 62° ODS CC Zero A
19 36 TSH -0.07" SCI 0.05 112° ODSCC Zero A
21 68 TSH +0.00" SCI 0.23 123° ODSCC Zero A
28 60 TSH -0.01" SCI 0.22 36° ODSCC Zero A
29 53 TSH +0.08" SCI 0.28 108° ODSCC Zero A
30 47 TSH -0.14" SCI 0.17 128° ODSCC Zero A
32 58 TSH +0.05" SCI 0.12 51° ODSCC Zero A
33 55 TSH +0.03" SCI 0.20 111° ODSCC Zero A
34 62 TSH +0.39" SAi 0.21 0.15" ODSCC Zero A
37 50 TSH -0.06" SCI 0.15 66° ODSCC Zero A
40 57 TSH +0.06" SCI 0.26 106° ODSCC Zero A
41 50 TSH -0.09" SCI 0.11 80° ODSCC Zero Page 3 of6
. 2RCS-SG21B Hot Leg Tubesheet:
There were eighteen indications in seventeen tubes. Twelve indications were located at or slightly below the top of tubesheet (Ten were single circumferential ODSCC indications and two were multiple circumferential ODSCC indication). The remaining six indications were located above the top of tubesheet (One was a single circumferential ODSCC indication, one was a multiple circumferential ODSCC indication, three were single axial ODSCC indications and one was a single axial PWSCC indication).
Table 2RCS-SG21 B Indication Location Severity Initiation Projected Orientation Axial Arc Surface/
EOC SG Row Column Elevation Volts Length Length Degradation Leakage CDearees>
B 2
49 TSH -0.12" SCI 0.13 48° ODSCC Zero B
3 36 TSH -0.21" MCI 0.09 83° ODSCC Zero TSH -0.21" MCI 0.08 48° ODSCC Zero 8
3 53 TSH -0.02" SCI 0.11 115° ODSCC Zero B
3 59 TSH -0.09" SCI 0.22 79° ODSCC Zero 8
4 35 TSH -0.03" SCI 0.12 88° ODSCC Zero 8
6 59 TSH +0.04" SAi 0.48 0.12" PWSCC Zero 8
8 58 TSH-0.13" SCI 0.13 69° ODS CC Zero B
12 14 TSH +0.02" MCI 0.09 60° ODSCC Zero B
13 16 TSH +0.12" SAi 0.20 0.10" ODSCC Zero B
14 9
TSH +0.04" SCI 0.16 59° ODSCC Zero B
15 51 TSH -0.08" SCI 0.28 300° ODSCC Zero B
16 51 TSH -0.15" SCI 0.21 220° ODSCC Zero B
16 54 TSH-0.06" SCI 0.12 290 ODSCC Zero B
19 26 TSH +0.18" SAi 0.27 0.11" ODSCC Zero B
20 27 TSH +0.10" SAi 0.25 0.13" ODSCC Zero B
21 19 TSH -0.04" SCI 0.13 103° ODSCC Zero B
25 72 TSH -0.09" SCI 0.15 102° ODSCC Zero Page 4 of6
2RCS-SG21C Hot Leg Tubesheet:
There were sixteen indications in sixteen tubes. All indications were located at or slightly below the top of tubesheet (Fifteen were single circumferential ODSCC indications and one was a multiple circumferential ODSCC indications).
Table 2RCS-SG21C Indication Location Severity Initiation Projected Orientation Axial Arc Surface/
EOC SG Row Column Elevation Volts Length Length Degradation Leakage (De11reesl c
1 59 TSH -0.09" SCI 0.14 142° ODSCC Zero c
4 29 TSH -0.05" MCI 0.25 177° ODSCC Zero c
4 51 TSH +0.00" SCI 0.23 145° ODSCC Zero c
4 53 TSH +0.00" SCI 0.15 151° ODSCC Zero c
5 23 TSH -0.11" SCI 0.23 192° ODSCC Zero c
5 36 TSH +0.00" SCI 0.18 177° ODSCC Zero c
7 32 TSH -0.07" SCI 0.13 149° ODSCC Zero c
9 73 TSH -0.05" SCI 0.12 52° ODSCC Zero c
10 46 TSH-0.14" SCI 0.12 100° ODS CC Zero c
15 27 TSH -0.05" SCI 0.09 157° ODSCC Zero c
23 25 TSH-0.14" SCI 0.15 171° ODSCC Zero c
24 23 TSH -0.04" SCI 0.18 206° ODSCC Zero c
25 29 TSH -0.08" SCI 0.26 114° ODSCC Zero c
26 47 TSH -0.08" SCI 0.11 40° ODSCC Zero c
27 30 TSH -0.14" SCI 0.27 160° ODSCC Zero c
34 64 TSH -0.10" SCI 0.10 50° ODSCC Zero Page 5 of6
Attachment A Unit 2 - Cumulative Listing of Tubesheet Indications (All Outages)
(Updated through 2R18) 2RCS-SG21A 2RCS-SG21A 2RCS-SG21B 2RCS-SG21B Hot Lea Tubesheet Cold Leg Tubesheet Hot Lei:i Tubesheet Cold Leg Tubesheet INCH COUNT INCH COUNT INCH COUNT INCH COUNT
+ 0.00" 12
+ 0.00"
+ 0.00" 6
+ 0.00"
- 0.01" 10
- 0.01"
- 0.01" 6
- 0.01"
- 0.02" 10
- 0.02"
- 0.02" 2
- 0.02"
- 0.03" 18
- 0.03"
- 0.03" 12
- 0.03"
- 0.04" 16
- 0.04"
- 0.04" 11
- 0.04"
- 0.05" 14
~:~$5e~-~~
- 0.05" 11
- 0.05"
- 0.06" 15
- 0.06"
- 0.06" 8
- 0.06"
- 0.07" 16
- 0.07"
- 0.07" 12
- 0.07"
- 0.08" 13
- 0.08"
- 0.08" 23
- 0.08"
- 0.09" 14
- 0.09"
- 0.09" 23
- 0.09"
- 0.10" 13
- 0.10"
- 0.10" 11
- 0.10"
- 0.11" 20
- 0.11"
- 0.11" 9
- 0.11"
- 0.12" 6
- 0.12"
- 0.12" 9
- 0.12"
- 0.13" 14
- 0.13"
- 0.13" 1
- 0.13"
- 0.14" 8
- 0.14"
- 0.14" 2
- 0.14"
- 0.15" 3
- 0.15"
- 0.15" 5
- 0.15"
- 0.16" 6
- 0.16" 2
- 0.16"
- 0.17" 4
- 0.17"
- 0.17" 2
- 0.17"
- 0.18"
- 0.18"
- 0.18" 2
- 0.18"
- 0.19" 1
- 0.19"
- 0.19"
- 0.19"
- 0.20" 1
- 0.20"
- 0.20"
- 0.20"
- 0.21" 2
i'.~16~39';.
- 0.27
1
- 0.31" 1
The five shaded tube locations were reported as a distorted tubesheet signal from the bobbin coif probe. Rotating pancake coil examinations did not confirm any of these signal as real indications.
TOTAL 214 TOTAL 2
TOTAL 161 TOTAL Page 6 of6 2RCS-SG21C Hot Leg Tubesheet INCH COUNT
+ 0.00" 8
- 0.01" 1
- 0.02" 3
- 0.03" 2
- 0.04" 5
- 0.05" 14
- 0.06" 9
- 0.07
9
- 0.08" 16
- 0.09" 12
- 0.10" 11
- 0.11" 10
- 0.12" 8
- 0.13" 3
- 0.14" 6
- 0.15" 1
- 0.16" 2
- 0.17" 1
- 0.18" 1
- 0.19" 1
- 0.20"
- 0.22" 1
- 0.36" 1
- 0.40" 1
- 0.41" 1
- 0.50" 1
- 1.22" 1
- 1.49" 1
- 3.16" 1
t51Ml6~
TOTAL 132 2RCS-SG21C Cold Leg Tubesheet INCH COUNT
+ 0.00"
- 0.01"
- 0.02"
- 0.03"
- 0.04"
- 0.05"
- 0.06"
- 0.07"
- 0.08"
- 0.09"
- 0.10"
- 0.11"
- 0.12"
- 0.13"
- 0. 14"
- 0.15"
- 0.16"
- 0.17
- 0.18"
- 0.19"
- 0.20"
~IS.\\29\\!i TOTAL 1