ML13028A471
| ML13028A471 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley (NPF-073) |
| Issue date: | 01/14/2013 |
| From: | Ayres D Westinghouse |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| L-12-458 SG-SGMP-13-2, Rev 1 | |
| Download: ML13028A471 (59) | |
Text
Westinghouse Non-Proprietary Class 3 SG-SGMP-1 3-2 January 201 Revision 1 Beaver Valley Unit 2 End-of-Cycle 16 Voltage-Based Repair Criteria 90-Day Report Westinghouse 3
WESTINGHOUSE NON-PROPRIETARY CLASS 3 SG-SGMP-13-2 Revision 1 Beaver Valley Unit 2 End-of-Cycle 16 Voltage-Based Repair Criteria 90-Day Report D. J. Ayres*
SG Management Programs January 2013 Verified:
T. P. Magee*
Chemistry Diagnostics & Materials Engineering Reviewer: W. K. Cullen*
SG Management Programs Approved: W. J. Bedont*, Manager SG Management Programs Owner Accepted:
j.~-I13 G. Aib
,echnical Services Engineering OwnerAccepted:
i'i'3 C. Battistone, S erviso, Technical Services Engineering Owner Accepted: p" P. Pauvlinch, Manager, Technica I erviaces Engineering
- Electronically Approved Records areAuthenticatedin the Electronic Document Management System This report has been prepared by Westinghouse Electric Company LLC and bears a Westinghouse Electric Company copyright notice. You are permitted to copy and redistribute all or portions of the report; however all copies made by you must include the copyright notice in all instances.
Westinghouse Electric Company LLC 1000 Westinghouse Drive Cranberry Township, PA 16066, USA 0 2013 Westinghouse Electric Company LLC All Rights Reserved
ii RECORD OF REVISIONS Revision Date Description January 0
1 1, Original Issue 2013 Entered Iin Editorial correction on page 3-1 EDMS SG-SGMP-13-2 January 2013 Revision 1
111 TABLE OF CONTENTS RECO RD O F REV ISION S............................................................................................................
ii TA BLE O F CO N TEN TS...............................................................................................................
iii LIST O F TA BLES.........................................................................................................................
iv LIST O F FIG U RES.........................................................................................................................
v 1
IN TRO D U CTION............................................................................................................
1-1 2
SUM M ARY AN D CON CLU SION S................................................................................
2-1 3
EOC-16 INSPECTION RESULTS AND VOLTAGE GROWTH RATES........................ 3-1 3.1 EO C-16 Inspection Results........................................................................................
3-1 3.2 Voltage G row th Rates.................................................................................................
3-3 3.3 Probe W ear Criteria.....................................................................................................
3-4 3.4 ND E U ncertainties......................................................................................................
3-4 3.5 A ssessm ent of +Point Confirm ation Rates................................................................
3-4 3.6 Tube Rem oval.............................................................................................................
3-5 4
DATABASE APPLIED FOR LEAK AND BURST CORRELATIONS...........................
4-1 4.1 Tube M aterial 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 ND E U ncertainties......................................................................................................
4-1 4.6 U pper Voltage Repair Lim it.......................................................................................
4-1 5
SLB AN ALY SIS M ETH OD S...........................................................................................
5-1 6
BOBBIN V OLTA GE D ISTRIBU TION S.........................................................................
6-1 6.1 Calculation of Voltage D istributions..........................................................................
6-1 6.2 Probability of D etection (PO D )..................................................................................
6-2 6.3 Lim iting G rowth Rate D istribution............................................................................
6-2 6.4 Cycle Operating Period..............................................................................................
6-2 6.5 Projected EO C-17 Voltage D istribution.....................................................................
6-2 7
SLB LEAK RATE AND TUBE BURST PROBABILITY ANALYSES........................... 7-1 7.1 EOC-16 Condition Monitoring Leak Rate and Tube Burst Probability................... 7-1 7.2 Cycle 17 Operational Assessment Leak Rate and Tube Burst Probability.............. 7-1 8
REFEREN CES................................................................................................................
A -1 A PPEN D IX A.............................................................................................................................
A -2 A PPEN D IX B..............................................................................................................................
B-1 B.1 Probe Variability Im plem entation:.......................................................................
B-1 B.2 Probe W ear Irm plem entation.......................................................................................
B-2 SG-SGMP-13-2 January 2013 Revision 1
iv Table 3-1 Table 3-2 Table 3-3 Table 3-4 Table 3-5 Table 3-6 Table 3-7 Table 4-1 Table 4-2 Table 4-3 Table 6-1 Table 7-1 Table 7-2 LIST OF TABLES EOC-16 DSI Voltage Distribution for SG-A.......................................................
3-6 EOC-16 DSI Voltage Distribution for SG-B........................................................
3-7 EOC-16 DSI Voltage Distribution for SG-C........................................................
3-8 Indication Distribution as Function of Tube Support Plate.................................
3-9 Voltage Growth Cumulative Distribution..........................................................
3-10 Growth Rate as Function of BOC Voltage Range..............................................
3-11 Indications with the Largest Growth in Cycle 16..............................................
3-12 7/8" Tube Burst Pressure vs. Bobbin Amplitude Correlation Parameters........... 4-3 Tube Leak Rate vs. Bobbin Amplitude Correlation Parameters.......................... 4-4 7/8" Tube Probability of Leak Correlation Parameters........................................
4-5 Predicted Voltage Distribution at EOC-17...........................................................
6-3 Leak and Burst Results for EOC-16....................................................................
7-2 Leak and Burst Results for EOC-17 (POD = 0.6)...............................................
7-2 SG-SGMP-13-2 January 2013 Revision 1
v LIST OF FIGURES Figure 3-1 Bobbin DSI Volts vs. +Point SAI Volts for All Confirmed Indications (2R 14, 2R 15, and 2R 16)....................................................................................
3-13 Figure 3-2 Measured Bobbin DSI Voltage, EOC-16 SG-A.................................................
3-14 Figure 3-3 Measured Bobbin DSI Voltage, EOC-16 SG-B.................................................
3-15 Figure 3-4 Measured Bobbin DSI Voltage, EOC-16 SG-C.................................................
3-16 Figure 3-5 Number of Measured Bobbin DSI as Function of TSP.....................................
3-17 Figure 3-6 Voltage Growth during Cycle 16.......................................................................
3-18 Figure 3-7 Voltage Growth during Cycle 15.......................................................................
3-19 Figure 3-8 Voltage Growth in Cycle 16 vs. BOC Voltage.......................
3-20 Figure 6-1 Predicted Voltage Distribution at EOC-17, SG-A...............................................
6-4 Figure 6-2 Predicted Voltage Distribution at EOC-17, SG-B................................................
6-5 Figure 6-3 Predicted Voltage Distribution at EOC-17, SG-C................................................
6-6 SG-SGMP-13-2 January 2013 Revision 1
1-1 1
INTRODUCTION This report provides a summary of the Beaver Valley Unit 2 steam generator (SG) bobbin and
+PointTM probe inspections at tube support plate (TSP) intersections, together with postulated Steam Line Break (SLB) leak rate and tube burst probability analyses. This is the first 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 SGs. 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 16, projection of EOC-17 bobbin coil voltage distributions, as well as the associated SG tube leak rates and burst probabilities through EOC-17 conditions.
The condition monitoring analysis at end of Cycle 16 (EOC-16) was carried out using the actual bobbin coil voltage distributions measured during the EOC-16 outage. Since this is the first implementation of the voltage based repair criteria, there are no projections from the prior outage operational assessment for comparison. These evaluations utilized the Westinghouse generic Monte Carlo methodology presented in Reference 2.
The operational assessment analysis was performed to project leak rates and tube burst probabilities for postulated SLB conditions at the end of the ongoing cycle (EOC-17) based on the 2.0 volt repair criteria for 7/8-inch diameter tubes. These analyses utilized bobbin voltage distributions measured during the recent (EOC-16) inspection and a growth rate distribution bounding the last two inspections (EOC-15 and EOC-16 inspections). Leak and burst analyses for the operational assessment were performed using the Reference 3 default value primary-to-secondary pressure differential of 2560 psi since credit cannot be taken for operability of the pressurizer power operated relief valves (PORVs) during a SLB event.
+PointTM is a trademark of Zetec, Inc.
SG-SGMP-13-2 January 2013 Revision 1
2-1 2
SUMMARY
AND CONCLUSIONS A total of 963 bobbin coil distorted support indications (DSI) indications were observed during the Beaver Valley Power Station (BVPS) Unit 2 EOC-16 inspection, in all three SGs combined. 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 probe. However, the original 2R16 inspection plan did not include implementation of the criteria, thus all 963 DSI indications were inspected with a +Point probe. Of these 963 +Point inspected DSIs, only 36 were confirmed as axial outside diameter stress corrosion cracking (ODSCC) using the +Point coil. An additional tube, R32 C31 in SG-B, was reported to contain a very minor +Point axial ODSCC indication (0.07 +Point volts) at the 02H TSP elevation.
Review of the bobbin data for this tube could not identify a DSI signal. This tube was inspected using the +Point coil due to a freespan ding between the O1H and 02H TSP elevations. The largest number of bobbin indications, 370, were found in SG-B; 15 were confirmed as axial ODSCC. Only one bobbin indication exceeding 1.5 volts (1.56 volts on RIO C51 at 02H in SG-C) was observed for all SGs combined. This indication was inspected with a +Point probe; ODSCC was not detected.
No circumferential indications or axial indications extending outside the top support plate (TSP) were identified by +Point inspection at the TSP distorted signal indication (DSI) locations.
SLB leak rate and tube burst probability analyses were performed using the actual EOC-16 bobbin voltage distributions (condition monitoring analysis) as well as the projected EOC-17 bobbin voltage distributions (operational assessment). The SLB leak rates from the condition monitoring analysis shows significant margins relative to the faulted SG allowable limit of 2.2 gpm (room temperature), Reference 10. The corresponding condition monitoring tube burst probability values are well below the Nuclear Regulatory Commission (NRC) reporting guideline of 10-2.
The largest SLB leak rate in the condition monitoring analysis is calculated for SG-C, with a magnitude of 0.0968 gpm, which is well below the allowable SLB leakage limit of 2.2 gpm. All leak rate values quoted are equivalent volumetric rates at room temperature. The limiting conditional tube burst probability from the condition monitoring analysis, 3.7x 10-5 predicted for SG-B and SG-C, is well below the NRC reporting guideline of 10-2. Thus, the condition monitoring results are well within the allowable limit/reporting guideline.
SLB leak rate and tube probability projections at the EOC-17 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 3. Since credit cannot be taken for the operability of the pressurizer PORV's during a SLB event, leak and burst analyses for the Cycle 17 operational assessment were perfonned using the Reference 3 default primary-to-secondary pressure differential of 2560 psi. SG-C is predicted to be the limiting SG. For a projected Cycle 17 duration of 538 effective full power days (EFPD), the EOC-17 leak rate projected for SG-C using the GL 95-05 constant POD of 0.6 is 0.345 gpm (room temperature), which is less than the current limit of 2.2 gpm. This leak rate projection utilized the leak rate calculation methodology of References 5 and 6. The limiting EOC-17 burst probability is calculated for SG-B; its magnitude is 6.1 1x10-5, well below the NRC reporting guideline of 10-2. Therefore all Reference 1 acceptance criteria will be satisfied throughout Cycle 17.
SG-SGMP-13-2 January 2013 Revision I
3-1 3
EOC-16 INSPECTION RESULTS AND VOLTAGE GROWTH RATES 3.1 EOC-16 Inspection Results In accordance with the guidance provided by the NRC GL 95-05, the EOC-16 inspection of the Beaver Valley Unit 2 SGs consisted of a complete, 100% eddy current (EC) bobbin probe full length examination of the tube bundles in all three SGs. RPC (+Point) inspections were also performed for all bobbin indications at TSPs. Only one cold leg TSP indication was reported using the bobbin coil (R4 C85 in SG-A at 08C); subsequent +Point inspection did not identify degradation. There were no circumferential indications at the TSPs, and no indications extending outside the TSPs.
For prior outages, the alternate repair criterion per GL 95-05 had been approved, but 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 ODSCC using a +Point probe, however, all prior inspections were performed using the bobbin probe inspection requirements of GL 95-05.
The 2R 16 initial inspection plan did not include implementation of GL 95-05; however, for 2R16 the bobbin probe data analysis utilized the guidance and requirements of GL 95-05. Since the 2R16 inspection plan did not assume that GL 95-05 would be implemented, all bobbin coil distorted signal indications (DSI) at the TSPs 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 or equal to 2.0 volts are required to be inspected using a +Point probe. Therefore, the 100% +Point inspection of DSI signals exceeded the GL 95-05 requirements.
Additionally, the 2R16 eddy current inspection plan included 100% +Point inspection of dent with indication (DNI) and support plate residuals (SPR), as defined by FENOC. The DNI call is generated using a computer data screening (CDS) process, and identifies any TSP intersection with a mix channel voltage of greater than or equal to 1.25 volts with a phase angle of less than or equal to 55 degrees. This screening is performed for the detection of axial primary water stress corrosion cracking (PWSCC) indications at the TSP intersections. The identification of a DNI call is not solely restricted to the CDS output; the manual data analysis can also report DNI indications. The SPR code is used for the identification of the TSP locations with mix residuals greater than or equal to 1.50 volts. The initial plan included 100% +Point inspection of SPR >2 volts with 25% +Point sampling of SPRs >1.5 volts but < 2 volts. This plan was expanded to include 100% of all SPR signals. Prior BVPS Unit 2 inspections (including 2R16) utilized a SPR +Point testing threshold of greater than or equal to 1.5 volts in the mix channel for detection of a 1.0 volt axial ODSCC indication. The basis for this threshold was an evaluation performed in the 1996 time frame, which was more qualitatively based than quantitatively based. In order to support this threshold, a series of Data Union simulations were performed to establish adequate detection capabilities using the bobbin coil for SPR signals of <1.5 volts. Reference 12 describes the results of this effort. A 0.87 volt, 46.4%TW (by metallographic examination) pulled tube axial ODSCC signal taken from the ETSS 128412 data base was digitally injected into BVPS Unit 2, SPR host signals ranging in voltage from 1.50 to 2.89 volts, with SPR phase SG-SGMP-13-2 January 2013 Revision 1
3-2 angles ranging from 71 to 143 degrees.
In all cases, detection was judged reliable by two independent analysts.
Thus, Reference 12 establishes that the 1.5 volt SPR +Point testing threshold is conservative.
For the combined total of DSI, DNI, and SPR intersections for each SG of 1308 in SG-A, 568 in SG-B, and 1015 in SG-C, only 37 TSP intersections were confirmed to contain axial ODSCC.
This suggests that the application of GL 95-05 is conservative.
Appendix A contains a listing of all EOC-16 DSI indications.
The requirements of applicability 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 8). None of the indications included in this analysis were detected in dents greater than 5.0 volts, as measured by bobbin. All SPR indications were tested with the +Point probe so that no ODSCC indications greater than 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 EOC-16 bobbin voltage data for the TSP intersections in the three SGs with distorted support indications (DSIs). A total of 963 TSPs had DSI indications in all three SGs combined, of which only 27 indications had a voltage above 1.0 volt and only one indication had a voltage above 1.5 volts. No DSI was above the GL 95-05 lower voltage repair limit of 2.0 volts. Of the nearly 3000 TSP intersections across all SGs which were inspected using the +Point probe, only 37 intersections were reported to contain axial ODSCC, based on the +Point probe analysis. One of these indications (R32 C31 at 02H in SG B) was detected by a
+Point probe which was not detected by bobbin. This indication was reported during the +Point examination of R32 C31 from the 01H TSP to the 02H TSP for the inspection of a freespan ding in the 01H to 02H span. The +Point signal amplitude of the indication on R32 C31 is only 0.07 volt, which has in inferred depth of 38% through-wall (TW) using Electric Power Research Institute (EPRI) Examination Technique Specification Sheet (ETSS) 128431. The bobbin voltage vs. +Point voltage for all confirmed indications in 2R14, 2R15, and 2R16 was plotted in Figure 3-1 and a simple regression was performed. The imputed bobbin voltage associated with a given +Point voltage was conservatively chosen as the upper 95% confidence bound on the mean. This results in a conservative estimate of the bobbin voltage of 0.67 volt that corresponds to a +Point voltage of 0.07 volts. This indication was included in the DSI population for the condition monitoring and operational assessment analyses. Of the 963 TSPs with bobbin DSI indications, only 36 were confirmed to contain axial ODSCC using a +Point probe. Based on
+Point examination, 37 TSP intersections were reported to contain axial ODSCC (including R32 C31 in SG-B).
Tables 3-1 through 3-3 tabulate the number of field bobbin indications, the number of those indications that were +Point RPC inspected, the number of +Point RPC confirmed indications, and the number of indications removed from service due to tube repairs. All tubes with indications were returned to 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 EOC-16 indications is also shown in Figures 3-2, 3-3 and 3-4 for steam SG-SGMP-13-2 January 2013 Revision 1
3-3 generators SG-A, SG-B, and SG-C, respectively. Since none of these tubes were plugged, this is also the distribution of indications that were in service at the beginning of Cycle 17.
Overall, the combined data for all three SGs of Beaver Valley Unit 2 show the following:
- All of the 963 TSP indications identified during the 2R16 inspection were inspected using a
+Point probe.
" Of the 963 DSIs inspected using a +Point probe, 36 were confirmed to contain axial ODSCC.
" No indications exceeded the 2 volt repair limit.
" A total of 964 DSI indications were returned to service for Cycle 17 (including the imputed bobbin coil voltage for SG-B, R32 C31 at 02H).
The distribution of EOC-16 indications as a function of support plate location is summarized in Table 3-4 and shown in Figure 3-5. The data show a strong predisposition of ODSCC to occur in the first few hot leg TSPs (811 out of 964 indications occurred at the hot leg intersections in the 2nd, 3rd & 4th TSPs), although the mechanism extended to higher TSPs. Only one indication was 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.
3.2 Voltage Growth Rates For projection of leak rates and tube burst probabilities at the end of Cycle 17 operation, voltage growth rates were developed from the EOC-16 inspection data and a re-evaluation of the EOC-15 inspection eddy current (EC) signals for the same bobbin DSI indications. Growth is determined when the same indication can be identified in two successive inspections. Since there are new indications in one outage and tubes may have been plugged in the previous outage, the ntumber 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 cumulative probability distribution for growth rate as a function of voltage change in each Beaver Valley Unit 2 steam generator during Cycle 16 on an effective full power year (EFPY) basis.
Cycle 16 growth data for all 3 SGs are also plotted in Figure 3-6. The curve labeled "all SGs" in Figure 3-6 represents the averaged composite growth data from all three SGs.
The average growth rates for each SG during Cycle 16 are given in Table 3-6. The average growth rates over the entire voltage range vary between negative growth and 9.9% of the beginning-of-cycle (BOC) voltage per EFPY, between the SGs, with an overall average of 3% per EFPY. The average growth in SG-A and SG-B was negative, implying essentially no growth, and the average growth in SG-C was positive. The Cycle 15 growth rates are shown in Figure 3-7. Also shown in Figure 3-7 and in Figure 3-6 is a curve which bounds all of the growth curves for both cycles. This bounding curve is used in the operational assessment analysis to project the indication voltages at EOC-17.
Table 3-7 lists the top 15 indications on the basis of Cycle 16 growth rate in descending order.
This confirms that Cycle 16 had only modest growth. The total growth during Cycle 16 for all indications was under 0.5 volts. Table 3-7 also shows the voltage change between 2R14 and SG-SGMP-13-2 January 2013 Revision 1
3-4 2R16. The similarity of the voltage change for one cycle and the voltage change for two cycles indicates that the apparent growth may be more of an issue of measurement repeatability, not true growth.
To determine if Beaver Valley Unit 2 growth rates exhibited a potential dependency on the BOC voltage, the growth rate data for Cycle 16 was plotted against BOC voltage, and the resulting plot is shown in Figure 3-8. The Cycle 16 growth data do not show any tendency to increase with the 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 4) was applied during the EOC-16 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. Only one indication had a voltage over 1.5 volts and that indication was tested with a probe that did not exceed the 15% wear criteria for being in calibration. Therefore no tubes were retested due to the probe wear criteria. Details on implementation of probe variability and probe wear criteria at Beaver Valley Unit 2 are discussed in Appendix B.
3.4 NDE Uncertainties The NDE uncertainties applied for the Cycle 16 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 (NDE) uncertainty distributions are included in the Monte Carlo analyses for SLB leak rates and tube burst probabilities based on the EOC-16 actual voltage distributions as well as for the EOC-17 projections. In the EOC-17 projection analysis, NDE uncertainty adjustment is applied to the BOC voltage before growth is added to obtain EOC voltage.
3.5 Assessment of +Point Confirmation Rates This is the first application of the GL 95-05 alternate repair criteria at BVPS Unit 2. Therefore there are no confirmed indications that were left in service at the previous outage. The confirmation rate for indications detected by bobbin in the EOC-16 inspection is very low, only 36 out of 963 bobbin indications were confirmed as axial ODSCC by +Point inspection. All bobbin indications were included in the EOC-17 operational analysis whether they were confirmed or not.
SG-SGMP-13-2 January 2013 Revision 1
3-5 3.6 Tube Removal, Section 4 of GL 95-05 states in part: "Implementation of a voltage based repair criteria should include a program of tube removals for the purpose of (1) confirming axial ODSCC as the dominant degradation mechanism, (2) monitoring the degradation mechanism over time, (3) providing additional data to enhance burst pressure probability of leakage and conditional leak rate correlations, and (4) assessing inspection capabilities. The proposed program requires two pulled tube specimens (minimum of four tube support plate intersections) during the outage that implements the voltage based repair criteria or during an outage preceding the initial application of these criteria." Section 4 goes on to state, in part, "The request to acquire pulled tube specimens may be met by participating in an Industry sponsored tube pull program endorsed by the NRC."
During a teleconference with the NRC to discuss tube removal during 2R16, FENOC expressed their desire to defer the tube removal process until 2R17 as allowed by NRC Letter dated January 31, 2000, from Jack Strosnider (Director, NRR) to David Modeen (Director, NEI) Reference 11.
FENOC has committed to remove the required amount of tube support plate intersections during 2R17 in accordance with Attachment 1, Section 4 of GL 95-05.
SG-SGMP-13-2 January 2013 Revision 1
3-6 Table 3-1 EOC-16 DSI Voltage Distribution for SG-A In-Service,
+Point
+Point Tested Not Confirmed Voltage Number of
+Point But Not
+Point Returned or +Point Bin Indications Confirmed Confirmed Tested Plugged to Service Not Tested 0.1 0
0 0
0 0
0 0
0.2 19 0
19 0
0 19 19 0.3 62 1
61 0
0 62 62 0.4 65 0
65 0
0 65 65 0.5 42 5
37 0
0 42 42 0.6 31 0
31 0
0 31 31 0.7 18 0
18 0
0 18 18 0.8 13 1
12 0
0 13 13 0.9 8
0 8
0 0
8 8
1 11 0
11 0
0 11 11 1.1 2
0 2
0 0
2 2
1.2 1
0 1
0 0
1 1
1.3 1
0 1
0 0
1 1
1.4 3
0 3
0 0
3 3
Total 276 7
269 0
0 276 276 Average voltage = 0.457 volts SG-SGMP-13-2 January 2013 Revision 1
3-7 Table 3-2 EOC-16 DSI Voltage Distribution for SG-B In-Service,
+Point
+Point Tested Not Confirmed Voltage Number of
+Point But Not
+Point Returned or +Point Bin Indications Confirmed Confirmed Tested Plugged to Service Not Tested 0.1 1
0 1
0 0
1 1
0.2 26 1
25 0
0 26 26 0.3 80 2
78 0
0 80 80 0.4 76 3
73 0
0 76 76 0.5 59 2
57 0
0 59 59 0.6 54 4
50 0
0 54 54 0.7 27*
1*
26 0
0 27 27 0.8 22 0
22 0
0 22 22 0.9 7
1 6
0 0
7 7
1 7
0 7
0 0
7 7
1.1 5
1 4
0 0
5 5
1.2 2
0 2
0 0
2 2
1.3 0
0 0
0 0
0 0
1.4 2
0 2
0 0
2 2
1.5 2
0 2
0 0
2 2
Total 370 15 355 0
0 370 370 Average voltage = 0.455 volts
- One indication detected by +Point inspection and not by bobbin. Imputed bobbin voltage is used here.
SG-SGMP-13-2 January 2013 Revision I
3-8 Table 3-3 EOC-16 DSI Voltage Distribution for SG-C In-Service,
+Point
+Point Tested Not Confirmed Voltage Number of
+Point But Not
+Point Returned or +Point Bin Indications Confirmed Confirmed Tested Plugged to Service Not Tested 0.1 0
0 0
0 0
0 0
0.2 19 1
18 0
0 19 19 0.3 40 1
39 0
0 40 40 0.4 56 3
53 0
0 56 56 0.5 57 4
53 0
0 57 57 0.6 47 1
46 0
0 47 47 0.7 31 3
28 0
0 31 31 0.8 34 1
33 0
0 34 34 0.9 16 0
16 0
0 16 16 1
9 1
8 0
0 9
9 1.1 4
0 4
0 0
4 4
1.2 3
0 3
0 0
3 3
1.3 1
0 1
0 0
1 1
1.6 1
0 1
0 0
1 1
Total 318
{
15 303 0
0 318 318 Average voltage = 0.517 volts SG-SGMP-13-2 January 2013.
Revision 1
3-9 Table 3-4 Indication Distribution as Function of Tube Support Plate SGA SGB 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 104 1.37 0.45 0.45
-0.02 02H 169 1.44 0.47 0.46
-0.02 03H 81 1.25 0.50 0.41
-0.03 03H 116 1.16 0.49 0.37 0.00 04H 38 1.36 0.45 0.34
-0.03 04H 40 1.09 0.40 0.22
-0.04 05H 37 0.80 0.42 0.17
-0.07 05H 29 1.40 0.40 0.25 0.00 06H 7
0.71 0.40 0.08
-0.06 06H 7
0.45 0.31 0.00
-0.07 07H 3
0.75 0.55 0.26 0.20 07H 5
0.47 0.36 0.07
-0.11 08H 5
0.43 0.25 0.03 0.03 08H 4
0.46 0.35 0.11 0.11 08C 1
0.23 0.23 0.03 0.03 08C 0
Total Number of 276 Total Number of 370 EOC-16 Indications EOC-16 Indications SGC 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 136 1.56 0.59 0.41 0.06 02H 409 1.56 0.50 0.46 0.01 03H 90 1.16 0.50 0.43 0.02 03H 287 1.25 0.50 0.43 0.00 04H 37 0.88 0.40 0.34 0.02 04H 115 1.36 0.42 0.34
-0:02 05H 28 1.07 0.48 0.47 0.04 05H 94 1.40 0.43 0.47
-0.02 06H 12 0.64 0.35 0.28 0.08 06H 26 0.71 0.35 0.28 0.00 07H 7
0.60 0.38 0.22
-0.02 07H 15 0.75 0.41 0.26
-0.01 08H 8
1.07 0.50 0.27 0.04 08H 17 1.07 0.39 0.27 0.06 08C 0
08C 1
0.23 0.23 0.03 0.03 Total Number of 318 Total Number of 964 EOC-l16 Indications EOC-16 Indications SG-SGMP-13-2 January 2013 Revision 1
3-10 Table 3-5 Voltage Growth Cumulative Distribution SG A SG B SG C Composite Voltage Change:
EOC-16 Cumulative Cumulative Cumulative Cumulative minus Number of Probability Number of Probability Number of Probability Number of Probability EOC-15 Indications Distribution Indications Distribution Indications Distribution Indications Distribution
-0.4 2
0.008584 5
0.015337 5
0.019841 12 0.014797
-0.3 11 0.055794 7
0.03681 3
0.031746 21 0.040691
-0.2 16 0.124464 15 0.082822 6
0.055556 37 0.086313
-0.1 41 0.300429 44 0.217791 24 0.150794 109 0.220715 0
63 0.570815 112 0.56135 58 0.380952 233 0.508015 0.1 65 0.849785 96 0.855828 80 0.698413 241 0.805179 0.2 21 0.939914 34 0.960123 42 0.865079 97 0.924784 0.3 9
0.978541 10 0.990798 18 0.936508 37 0.970407 0.4 3
0.991416 2
0.996933 13 0.988095 18 0.992602 0.5 2
1 1
1 3
1 6
1 Number of indications with Growth 233 326 252 811 SG-SGMP-13-2 January 2013 Revision 1
3-11 Table 3-6 Growth Rate as Function of BOC Voltage Range Number of Average Voltage Average Voltage Voltage Growth as Voltage Growth as Voltage Range Indications for Average BOC Growth per Growth per Percent of BOC Percent of BOC Growth Cycle 16 EFPY Volts per Cycle 16 Volts per EFPY Composite entire range 815 0.49 0.00 0.00 4%
3%
Vboc<0.75 722 0.43 0.01 0.01 6%
4%
Vboc>0.75 93 0.93
-0.09
-0.06
-10%
-7%
SG-A entire range 237 0.50
-0.028
-0.0193
-1.38%
-0.95%
Vboc<0.75 205 0.42
-0.018
-0.0124
-0.11%
-0.08%
Vboc>0.75 32 0.96
-0.095
-0.0656
-9.48%
-6.55%
SG-B entire range 326 0.47
-0.015
-0.0104
-0.14%
-0.09%
Vboc<0.75 292 0.42
-0.006
-0.0041 1.15%
0.79%
Vboc>0.75 34 0.91
-0.09
-0.0622
-11.15%
-7.71%
SG-C entire range 252 0.50 0.044 0.0304 14.34%
9.91%
Vboc<0.75 225 0.45 0.059 0.0408 17.17%
11.87%
Vboc>0.75 27 0.92
-0.083
-0.0574
-9.24%
-6.38%
SG-SGMP-13-2 January 2013 Revision 1
3-12 Table 3-7 Indications with the Largest Growth in Cycle 16 EOC-16 EOC-15 C16 Growth,
+Point C15 Growth, C14 to C16 Growth, SG Row Col TSP #
Volts Volts Volts Confirmed New?
Volts Volts 2C 29 63 05H 0.78 0.31 0.47 No No 0.01 0.35 2B 19 36 02H 0.94 0.48 0.46 No No 0.06 0.54 2A 5
10 02H 1.37 0.92 0.45 No No
-0.07 0.40 2C 10 54 03H 0.9 0.47 0.43 No No
-0.21 0.26 2C 25 76 02H 0.76 0.35 0.41 No No
-0.27 0.16 2A 36 28 03H 0.87 0.46 0.41 No No
-0.39 0.02 2C 25 34 03H 0.93 0.53 0.4 No No 0.03 0.43 2B 19 29 03H 0.97 0.6 0.37 No No
-0.19 0.18 2B 21 53 03H 0.97 0.6 0.37 No No
-0.01 0.38 2C 18 53 02H 1.05 0.68 0.37 No No 0.00 0.37 2C 18 54 02H 0.95 0.58 0.37 No No
-0.42
-0.05 2C 27 76 03H 0.74 0.37 0.37 No No 0.04 0.41 2C 35 34 03H 0.59 0.22 0.37 No No N/A N/A 2C 29 47 02H 0.83 0.47 0.36 No No
-0.11 0.24 2A 28 46 03H 0.69 0.33 0.36 No No 0.11 0.47 SG-SGMP-13-2 January 2013 SG-SGMP-13-2 January 2013 Revision 1.
3-13 2.00 1.80 1.60 1.40 1.20 1.00 0.80 0.60 0.40 0.20
- SAI Data (no DNTs)
Regression Line Lower Confidence Upper Confidence on Mean
-II on WU U
U 0.00 0.00 0.10 0.20 0.30 0.40 0.50 SAT Volts 0.60 0.70 0.80 0.90 1.00 Figure 3-1 Bobbin DSI Volts vs. +Point SAI Volts for All Confirmed Indications (2R14, 2R15, and 2R16)
SG-SGMP-13-2 January 2013 Revision 1
3-14 EOC-16 Measured Voltage Distribution SG A 70 60 0 50 S40 -
o 30 a,,,6 E 20 10 n
0 I...........
l...
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 Volts Figure 3-2 Measured Bobbin DSI Voltage, EOC-16 SG-A SG-SGMP-13-2 January 2013 SG-SGMP-13-2 January 2013 Revision 1
3-15 EOC-16 Measured Voltage Distribution SG B 0
Cu E
3 zI 90 80 70 60 50 40 30 20 10
.4 II 0
0.1 0.2 0.3 0.4 0.5 0.6 0.70.8 0.9 1.0 1.1 1.2 Volts 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 Figure 3-3 Measured Bobbin DSI Voltage, EOC-16 SG-B SG-SGMP-13-2 January 2013 Revision 1
3-16 EOC-16 Measured Voltage Distribution SG C 60 50 I
50
=40 030 I
4I-0 20 II-E3 10 -
z 0
-r I I '
T---
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 Volts Figure 3-4 Measured Bobbin DSI Voltage, EOC-16 SG-C SG-SGMP-13-2 January 2013 Revision 1
3-17 Number of Indications vs. Support Number 180 160 m
140 m
120CoI 100 04-NSG A
- 80 -
.0 E 40 z
20 0
02H 03H 04H 05H 06H 07H 08H 08C Support Number Figure 3-5 Number of Measured Bobbin DSI as Function of TSP SG-SGMP-13-2 January 2013 SG-SGMP-13-2 January 2013 Revision I
3-18 BVPS2 Cycle -16 DSI Voltage Growth per EFPY
- AII SGs U SGA A SGB X SGC -*-Bound 17-° 0.9 0
L.
'0.5 E
0.2 0.1
-0.4
-0.35
-0.3
-0.25
-0.2
-0.15
-0.1
-0.05 0
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 DSI Voltage Growth per EFPY Figure 3-6 Voltage Growth during Cycle 16 SG-SGMP-13-2 January 2013 Revision I
3-19 BVPS2 Cycle-15 DSI Voltage Growth per EFPY 0.8----------------------------
>* 0.7 0
"4"SGA 50.6 "i.SGB 0.'
3 0.4 "SG C E
-X-Cy16 Bound U 0.3 0.2-------------
0.1-----
0--
-0.45 -0.4
-0.35 -0.3
-0.25 -0.2 -0.15
-0.1 -0.05 0
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 DSI Voltage Growth/EFPY Figure 3-7 Voltage Growth during Cycle 15 SG-SGMP-13-2 January 2013 Revision 1
3-20 Voltage Growth in Cycle-16 vs. BOC voltage 0.6 0.5 0.4 AAA A
A A
A A
0.3 A
A A
A SGI A
-"s=",.,U *
"A A SG C 2-0.2
, i A
A
-0.3
-0.4 3
4
-0.5
-0.6 0.2 0.4 0.6 0.8 1
1.2 1.4 1.6 BOC 16 Voltage Figure 3-8 Voltage Growth in Cycle 16 vs. BOC Voltage SG-SGMP-13-2 January 2013 SG-SGMP-13-2 January 2013 Revision I
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 3 for 7/8-inch diameter tubes at 650'F. The parameters used in the analysis are the flow stress mean 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 3.
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 3 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 3. 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 NDE uncertainties applied for the EOC-16 and EOC-17 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 NDE uncertainty distributions are used in the Monte Carlo analysis to predict the burst probabilities and accident leak rates at EOC-16 and EOC-17. 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 The upper voltage repair limit is based on the structural limit in Table 4-1 of 7.51 volts for a pressure differential of 2560 psi. It must be reduced by considering the projected voltage growth during the next cycle and NDE uncertainty. The maximum average percentage growth rate as a percentage of BOC voltage values for any steam generator is seen from Table 3-6 (SG C) to be 9.91% for the 528.59 effective full power days (EFPD) Cycle 16, which would project to 9.91%
SG-SGMP-13-2 January 2013 Revision 1
4-2 x (538.0/528.59) = 10.08% for the anticipated 538.0 EFPD Cycle 17. According to Reference 1, the minimum growth adjustment is 30% per EFPY (44.1% per cycle for the anticipated 538.0 EFPD Cycle 17). Therefore the specific maximum growth value of 44.1% and 20% for NDE uncertainty was used to estimate the voltage repair limit. This results in an upper voltage repair limit of 7.51 / (1 + 0.441 + 0.20) = 4.57 volts. No indications equal to or greater than this voltage were left in service.
Should the PORVs be shown to meet the requirements of Enclosure A of GL 90-06, and subsequent NRC approval received that PORVs can be relied upon under accident conditions, the applicable SLB conditions pressure differential is reduced to 2405 psi (2350 psi plus 2%
allowance for accumulation), and the upper voltage repair limit is then increased to approximately 5.80 volts.
Considering the inspection history of the BVPS Unit 2 SGs, it is unlikely that a bobbin coil DSI voltage of >4.57 volts will be observed within the BVPS Unit 2 SGs.
Therefore, it is recommended that the more conservative upper voltage repair limit of 4.57 volts continue to be applied, regardless of the PORV availability condition.
SG-SGMP-13-2 January 2013 Revision 1
4-3 Table 4-1 7/8" Tube Burst Pressure vs. Bobbin Amplitude Correlation Parameters B= a0 + a log(Volts)
S Parameter Addendum 7 Database Value Intercept, a0 7.4801 Slope, al
-2.4002 Index of Deter., r 79.67%
Std. Deviation, (YError 0.8802 Mean of Log(V) 0.3111 SS of Log(V) 51.6595 N (data pairs) 100 Str. Limit (2560 psi)(1" 7.51V Str. Limit (2405 psi) 9.40V p Value for a1 (2) 5.60 10-.36 Reference at-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 of 75.0 ksi can be obtained from the above values by multiplying by 1.0904.
SG-SGMP-13-2 January 2013 Revision 1
4-4 Table 4-2 Tube Leak Rate vs. Bobbin Amplitude Correlation Parameters Q = 1 0 [b3 +b4 log(Volts )]
Parameter Addendum 7 Database Value SLB AP = 2560 psi Intercept, b3
-0.33476 Slope, b4 0.95311 Index of Determination, r2 12.4%
Residuals, oE,_o, (b5) 0.8175 Mean of Log(Q) 0.7014 SS of Log(Q) 22.8754 p Value for b4 2.4%
SLB AP = 2405 psi Intercept, b3
-0.8039 Slope, b4 1.2077 Index of Determination, r2 20.0%
Residuals, 5Error (b5) 0.7774 Mean of Log(Q) 0.5090 SS of Log(Q) 22.6667 p Value for b4 0.5%
Common Data Data Pairs, N 32 Mean of Log(V) 1.0871 SS of Log(V) 3.1116 SG-SGMP-13-2 January 2013 Revision 1
4-5 Table 4-3 7/8" Tube Probability of Leak Correlation Parameters 1
Pr( Leak )=
1 + e-[bi +b, log( Volts )J Parameter f
Addendum 7 Database Value Logistic Intercept, b,
-4.9847 Logistic Slope, b, 7.6110 Intercept Variance, V,1 ('
1.2904 Covariance, V12
-1.7499 Slope Variance, V-2.8181 Number of Data, N 120 Deviance 33.66 Pearson SD 62.9%
MSE 0.285 Note:
(1) Parameters Vy1 are the elements of the covariance matrix of the coefficients, 3i. of the regression equation.
SG-SGMP-13-2 January 2013 Revision 1
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 EOC-16 and projected EOC-17 voltage distributions. The Monte Carlo analysis accounts for parameter uncertainty. The analysis methodology is described in the Westinghouse generic methods report of Reference 3 as supplemented by References 5 and 6. The Monte Carlo computer program used to implement this method is documented in Reference 7. Essentially the same methodology was applied to leak and burst analyses performed for the original Beaver Valley Unit 1 SGs, Reference 9.
In general, the methodology involves application of correlations for burst pressure, probability of leakage and leak rate to a measured or calculated EOC 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 BOC voltage distributions include an adjustment for detection uncertainty and occurrence of new indications, in addition to the adjustments for NDE uncertainties. 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-13-2 January 2013 SG-SGMP-13-2 January 2013 Revision I
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-17 voltage distributions.
6.1 Calculation of Voltage Distributions The analysis for EOC-17 voltage distribution starts with a cycle initial voltage distribution which is projected to the end-of-cycle conditions based on the growth rate and the anticipated cycle operating period. 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 to account for 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 =Ni / POD - Nrepaired + Ndeplugged
- 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 after the previous
- cycle, POD Probability of detection, Nrcpairmd
= Number of Ni which are repaired (plugged) after the last cycle, Ndeplugged
= 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 17 (BOC-17); therefore, Ndeplugged = 0. None of the tubes with indications at the TSP were plugged, therefore Nrepaired = 0.
EOC-16 RPC "no degradation detected" (NDD) indications were included in establishing the BOC-17 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 SQ 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-17 bobbin voltage frequency distributions is described in Reference 2, and it is essentially the same as that used in the original Beaver Valley Unit 1 SGs, Reference 9.
SG-SGMP-13-2 January 2013 Revision 1
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 I value of POD 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 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 provided in Reference 10 as follows.
Cycle 16
- 528.6 EFPD or 1.45 EFPY (actual)
Cycle 17
- 538.0 EFPD or 1.47 EFPY (projected) 6.5 Projected EOC-17 Voltage Distribution Calculations for the EOC-17 bobbin voltage projections were performed for all three SGs based on the EOC-16 distributions shown in Table 6-1. The BOC-17 distributions were adjusted to account for probability of detection as described above, and the adjusted number of indications at BOC-17 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-17 and the distribution of indications projected to EOC-17 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-17. 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-13-2 January 2013 Revision 1
6-3 Table 6-1 Predicted Voltage Distribution at EOC-17 SG-A Number of Indications SG-B Number of Indications SG-C Number of Indications Volt Bins Measured Input Predicted Measured Input Predicted Measured Input Predicted EOC-16 BOC-17 EOC-17 EOC-16 BOC-17 EOC-17 EOC-16 BOC-17 EOC-17 0.1 0
0.46 1
1.67 1.11 0
0.46 0.2 19 31.67 11.13 26 43.33 15.56 1
19 31.67 10.06 0.3 62 103.33 39.98 80 133.33 52.18 40 66.67 30.76 0.4 65 108.33 68.69 76 126.67 86.81 56 93.33 54.24 0.5 42 70 76.12 59 98.33 97.62 57 95 71.74 0.6 31 51.67 69.41 54 90 95.03 47 78.33 77.48 0.7 18 30 56.75 27 45 82.04 1
31 51.67 72.92 0.8 13 21.67 42.69 22 36.67 62.7 34 56.67 63 0.9 8
13.33 30.73 7
11.67 43.98 16 26.67 50.52 1
11 18.33 21.67 7
11.67 29.03 9
15 36.83 1.1 2
3.33 14.93 5
8.33 18.55 4
6.67 24.71 1.2 1
1.67 9.87 2
3.33 11.59 3
5 15.63 1.3 1
1.67 6.41 0
0 7.2 1
1.67 9.38 1.4 3
5 4.22 4
6.67 4.62 0
0 5.35 1.5 2.78 3.11 0
0 2.96 1.6 1.78 2.13 1
1.67 1.65 1.7 1.09 1.42 0.95 1.8 0.3 0.89 0.34 1.9 1
0.7 0.09 0
2 0
0.7 0.7 2.1 0.3 0.3 0.3 Total 276 460 460 370 616.7 616.7 318 530 530 SG-SGMP-13-2 January 2013 SG-SGMP-13-2 January 2013 Revision I
6-4 EOC-17 Predicted Voltage Distribution, SG-A 120 110 100
-I CA90 C
0280 70 C
z 60 0
EOC-17 50 EBOC-17 E 40 Z 30 20 10 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 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 volts Figure 6-1 Predicted Voltage Distribution at EOC-17, SG-A SG-SGMP-13-2 January 2013 Revision 1
6-5 EOC-17 Predicted Voltage Distribution, SG-B 140 130 120-110 C 100 0
90 v 80 z20 1
,oc-1 7 10 50 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 Volts Figure 6-2 Predicted Voltage Distribution at EOC-17, SG-B SG-SGMP-13-2 January 2013 Revision 1
6-6 EOC-17 Predicted Voltage Distribution, SG-C 100 90-80 0 70
-50 50 -
- EOC-17 0
40 -BOC-17 z
20 10 01L 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 2.1 2.2 2.3 volts Figure 6-3 Predicted Voltage Distribution at EOC-17, SG-C SG-SGMP-13-2 January 2013 Revision 1
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 EOC-16 inspection (condition monitoring assessment) as well as for the projected EOC-17 voltage distributions (operational assessment). The methodology used in these analyses is described in Section 6.
7.1 EOC-16 Condition Monitoring Leak Rate and Tube Burst Probability Analyses to calculate the EOC-16 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 EOC-16 voltage distributions using 250,000 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" tubes presented in the latest addendum to the EPRI ARC Database, Reference 2, were used. Since no credit can be taken for operability of the pressurizer PORVs during a SLB event, the SLB primary-to-secondary pressure differential was taken to be 2560 psi. The maximum EOC-16 leak rate of 0.0968 gpm and the maximum conditional burst probability of 3.7x 10-5 are well below their respective allowable limits (2.2 gpm, Reference 10, and 1 x 10-2, Reference 1, respectively). Therefore the condition monitoring performance criteria are satisfied.
7.2 Cycle 17 Operational Assessment Leak Rate and Tube Burst Probability The SLB leak rate and tube burst probability projection for the Cycle 17 operational assessment was carried out using the latest update to the ARC database documented in Reference 2, the POD of 0.60, and 1,000,000 Monte Carlo trials. Since credit cannot be taken for operability of the pressurizer PORV during a SLB event, the EOC-17 leak and burst analyses were performed using a primary-to-secondary pressure differential of 2560 psi.
The EOC-17 projections, considering a 538.0 EFPD operation cycle, using POD=0.6 are shown in Table 7-2. Both the maximum projected EOC-17 leak rate of 0.345 gpm and the maximum conditional burst probability of 6.11 x10-5 are well below their respective allowable limits (2.2 gpm and 1 x 10-2, respectively). Therefore the operational assessment performance criteria are satisfied for Cycle 17.
SG-SGMP-13-2 January 2013 Revision 1
7-2 Table 7-1 Leak and Burst Results for EOC-16 SLB Leak Rate, gpm Conditional Burst Pro (Room Temp.)
1 or More a 9 5th Percentile with 95% Confidence 95% Confider EOC-16 EOC-16 SG Condition Condition Monitoring Monitoring A
0.0623 2.5x10 5 B
0.0876 3.7x10-5 bability of t
cee C
0.0968 Table 7-2 Leak and Burst Results for EOC-17 (POD = 0.6)
Growth Rate Number of SLB Leak Rate Maximum Volts Probability of 1 Used in Indications at at 95/95 at EOC-17 or More Burst Projection EOC-17 (gpm)
Cycle 15 and 16 SG A 460 2.1 5.21x10 5 Bound 0.240 Cycle 15 and 16 SG B 616.7 2.1 6.11 x105 Bound 0.328 Cycle 15 and 16 SG C 530 2.1 5.55x10 5 Bound 0.345 SG-SGMP-13-2 January 2013 SG-SGMP-13-2 January 2013 Revision I
A-1 8
REFERENCES
- 1.
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.
WCAP-14277, Revision 1, "SLB Leak Rate and Tube Burst Probability Analysis Methods for ODSCC at TSP Intersections," Westinghouse Nuclear Services Division, December 1996.
- 3.
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.
- 4.
Letter from B.W. Sheron, Nuclear Regulatory Commission, to A. Marion, Nuclear Energy Research Institute, February 9, 1996.
- 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 LTR-CDME-08-167, "Software Release Letter for CycleSim Version 3.2," July 30, 2008.
- 8.
Westinghouse Letter DLC-96-184, "Duquesne Light Company Beaver Valley Power Station Unit 2 Steam Generator LOCA Plus SSE Loads," June 17, 1996.
- 9.
Westinghouse Report SG-SGDA-05-1, Rev. 1, "Beaver Valley Unit 1 Cycle 17 Voltage-Based Repair Criteria 90-Day Report," January 2005.
- 10.
FENOC Letter BVTS-0109, "2R16 Steam Generator 90 Day Alternate Repair Criteria Report Input Data Validation," January 2, 2013.
- 11.
NRC Letter to David J. Modeen from Jack R. Strosnider, "Industry Recommended Steam Generator Tube Pull Program," January 28, 2000.
- 12.
Westinghouse Letter LTR-SGMP-13-2, "Justification for Adequate Detection of of ODSCC in Support Plate Residuals Less Than or Equal to 1.5 Volts at Beaver Valley Unit 2,"
January 9, 2013 SG-SGMP-13-2 January 2013 Revision I
A-2 APPENDIX A DSI Indications for EOC-16 in SG-A SG Row Col Locn P1 Volts Comments 2A 11 2
03H 0.77 NDF 2A 10 7
02H 1.08 NDF 2A 10 7
03H 0.23 NDF 2A 18 7
04H 0.22 NDF 2A 19 7
02H 0.68 NDF 2A 22 7
02H 0.27 NDF 2A 10 8
03H 0.62 NDF 2A 19 8
03H 0.25 NDF 2A 4
9 03H 0.89 NDF 2A 4
9 04H 0.44 NDF 2A 20 9
03H 0.32 NDF 2A 5
10 02H 1.37 NDF 2A 5
10 03H 0.54 NDF 2A 5
10 04H 0.54 NDF 2A 9
10 02H 0.78 NDF 2A 17 10 03H 0.37 NDF 2A 18 10 03H 0.36 NDF 2A 18 10 04H 0.25 NDF 2A 20 10 04H 0.35 NDF 2A 5
11 04H 0.56 NDF 2A 23 11 02H 1
NDF 2A 23 11 03H 0.24 NDF 2A 20 12 02H 0.45 NDF 2A 9
13 02H 0.89 NDF 2A 28 13 03H 0.26 NDF 2A 7
14 03H 0.26 NDF 2A 9
14 03H 0.36 NDF 2A 31 14 04H 0.27 NDF 2A 3
15 03H 0.58 NDF 2A 6
15 02H 0.34 NDF 2A 14 15 04H 0.25 NDF 2A 19 15 03H 0.3 NDF 2A 19 15 04H 0.26 NDF 2A 26 15 03H 0.3 NDF 2A 9
16 02H 0.46 NDF 2A 9
16 03H1 0.8 NDF SG Row Col Locn P1 Volts Comments 2A 9
16 04H 0.6 NDF 2A 24 16 02H 0.17 NDF 2A 24 16 03H 0.25 NDF 2A 4
18 05H 0.8 NDF 2A 7
18 03H 0.55 NDF 2A 7
18 05H 0.22 NDF 2A 21 18 04H 0.41 NDF 2A 31 18 02H 0.95 NDF 2A 31 18 03H 0.6 NDF 2A 33 18 02H 0.23 NDF 2A 33 18 03H 0.4 NDF 2A 7
19 03H 0.63 NDF 2A 8
19 02H 0.54 NDF 2A 10 19 04H 0.34 NDF 2A 23 19 02H 0.86 NDF 2A 30 19 02H 0.36 NDF 2A 14 20 03H 0.54 NDF 2A 23 20 02H 0.18 NDF 2A 4
21 03H 0.61 NDF 2A 22 21 02H 0.24 NDF 2A 22 21 03H 0.22 NDF 2A 23 21 03H 0.38 NDF 2A 25 21 02H 0.2 NDF 2A 9
22 03H 0.54 NDF 2A 20 22 02H 0.73 NDF 2A 20 22 03H 0.44 NDF 2A 20 22 08H 0.43 NDF 2A 25 22 02H 0.5 NDF 2A 30 22 02H 0.57 NDF 2A 32 22 02H 0.62 NDF 2A 5
23 02H 0.46 NDF 2A 22 23 02H 0.28 NDF 2A 24 23 05H 0.72 Confinred 2A 39 23 02H 1.35 NDF 2A 4
24 02H 0.54 NDF 2A 24 24 02H 0.23 NDF SG-SGMP-13-2 January 2013 Revision 1
A-2 SG Row Col Locn P1 Volts Comments 2A 29 24 04H 1.36 NDF 2A 5
25 05H 0.61 NDF 2A 14 25 05H 0.28 NDF 2A 21 25 03H 0.32 NDF 2A 4
26 02H 0.82 NDF 2A 5
26 02H 0.35 NDF 2A 5
26 03H 0.6 NDF 2A 10 26 04H 0.32 NDF 2A 21 26 05H 0.49 NDF 2A 28 26 04H 0.48 NDF 2A 6
27 06H 0.31 NDF 2A 7
27 05H 0.34 NDF 2A 14 27 05H 0.35 NDF 2A 15 27 05H 0.22 NDF 2A 17 27 04H 0.36 NDF 2A 18 27 07H 0.5 NDF 2A 32 27 03H 0.42 NDF 2A 8
28 02H 0.33 NDF 2A 30 28 03H 0.23 NDF 2A 36 28 03H 0.87 NDF 2A 36 28 04H 0.21 NDF 2A 8
29 02H 0.26 NDF 2A 5
30 03H 0.55 NDF 2A 25 30 04H 0.49 NDF 2A 14 31 02H 0.28 NDF 2A 6
32 02H 0.29 NDF 2A 8
32 03H 0.27 NDF 2A 13 32 02H 0.32 NDF 2A 17 32 05H 0.65 NDF 2A 27 32 02H 0.31 NDF 2A 24 33 03H 0.4 NDF 2A 27 33 03H 0.75 NDF 2A 4
34 03H 0.72 NDF 2A 6
34 02H 0.27 NDF 2A 8
34 03H 1.25 NDF 2A 9
34 02H 0.29 Confirmed 2A 12 34 02H 0.44 NDF 2A 21 34 02H 0.33 NDF 2A 27 34 04H 0.47 NDF 2A 6
35 02H 0.97 NDF SG Row Col Locn P1 Volts Comments 2A 6
35 03H 0.47 NDF 2A 6
35 05H 0.33 NDF 2A 9
35 02H 0.36 NDF 2A 44 35 03H 0.57 NDF 2A 35 36 03H 0.5 NDF 2A 10 37 03H 0.26 NDF 2A 40 37 03H 0.79 NDF 2A 9
38 05H 0.64 NDF 2A 32 38 03H 0.18 NDF 2A 4
39 02H 0.35 NDF 2A 13 39 05H 0.2 NDF 2A 37 39 03H 0.43 NDF 2A 6
40 03H 0.27 NDF 2A 6
40 04H 0.27 NDF 2A 9
40 03H1 0.49 NDF 2A 14 40 05H 0.43 Confirmed 2A 38 40 05H 0.47 NDF 2A 28 41 02H 0.5 NDF 2A 8
42 02H 0.33 NDF 2A 26 42 02H 0.36 NDF 2A 27 42 04H 0.43 Confirmed 2A 27 42 05H 0.34 NDF 2A 33 42 05H 0.31 NDF 2A 37 42 03H 0.63 NDF 2A 39 42 02H 0.44 NDF 2A 6
43 02H1 0.52 NDF 2A 21 43 02H 0.28 NDF 2A 36 44 03H 0.64 NDF 2A 38 44 02H 0.92 NDF 2A 32 45 02H 0.5 NDF 2A 33 45 07H 0.39 NDF 2A 35 45 02H 0.63 NDF 2A 17 46 02H 0.76 NDF 2A 21 46 02H 0.46 NDF 2A 28 46 03H 0.69 NDF 2A 39 46 02H 0.36 NDF 2A 18 47 02H 0.23 NDF 2A 18 47 05H 0.9 NDF 2A 11 48 02H 0.93 NDF 2A 11 48 08H 0.37 NDF SG-SGMP-13-2 January 2013 Revision 1
A-3 SG Row Col Locn P1 Volts Comments 2A 12 48 05H 0.59 NDF 2A 14 48 05H 0.4 NDF 2A 7
49 02H 0.21 NDF 2A 13 49 04H 0.16 NDF 2A 4
50 02H 0.34 NDF 2A 4
50 03H 0.92 NDF 2A 4
50 04H 0.96 NDF 2A 14 50 03H 0.36 NDF 2A 7
51 02H 0.57 NDF 2A 9
51 04H 0.47 Confirmed 2A 32 51 05H 0.36 NDF 2A 16 52 02H 0.48 NDF 2A 24 52 02H 0.24 NDF 2A 34 52 02H 0.2 NDF 2A 46 52 06H 0.71 NDF 2A 5
53 02H 0.3 NDF 2A 14 53 02H 0.28 NDF 2A 16 53 03H 0.36 NDF 2A 23 53 02H 0.41 Confirmed 2A 34 53 02H 0.45 NDF 2A 4
54 02H 0.58 NDF 2A 4
54 04H 0.31 NDF 2A 4
54 05H 0.61 NDF 2A 14 54 02H 0.48 NDF 2A 28 54 02H 0.28 NDF 2A 29 54 03H 0.4 Confirmed 2A 33 54 06H 0.29 NDF 2A 37 54 05H 0.24 NDF 2A 21 55 02H 0.13 NDF 2A 9
56 02H 0.52 NDF 2A 9
56 04H 0.25 NDF 2A 19 56 03H 0.15 NDF 2A 28 56 03H 0.34 NDF 2A 34 56 05H 0.68 NDF 2A 37 56 03H 0.69 NDF 2A 9
57 02H 0.19 NDF 2A 9
57 03H 0.38 NDF 2A 18 57 02H 0.99 NDF 2A 19 57 02H 0.59 NDF 2A 19 57 04H 0.25 NDF SG Row Col Locn P1 Volts Comments 2A 20 57 02H 0.21 NDF 2A 33 57 04H 0.4 NDF 2A 39 57 03H 0.39 NDF 2A 7
58 03H 0.59 NDF 2A 14 58 02H 0.6 NDF 2A 30 58 04H 0.25 NDF 2A 44 58 06H 0.23 NDF 2A 3
59 02H 0.66 NDF 2A 14 59 02H 0.36 NDF 2A 14 59 03H 0.25 NDF 2A 14 59 06H 0.57 NDF 2A 16 59 04H 1.16 NDF 2A 17 59 02H 0.24 NDF 2A 17 59 05H 0.23 NDF 2A 4
60 02H 0.19 NDF 2A 4
60 06H 0.38 NDF 2A 13 60 02H 0.18 NDF 2A 19 60 02H 0.34 NDF 2A 16 62 08H 0.14 NDF 2A 20 62 05H 0.38 NDF 2A 4
63 02H 0.5 NDF 2A 15 63 02H 0.37 NDF 2A 24 63 05H 0.35 NDF 2A 30 63 08H 0.17 NDF 2A 27 64 02H 0.27 NDF 2A 42 64 04H 0.45 NDF 2A 14 65 03H 0.42 NDF 2A 29 65 02H 0.14 NDF 2A 16 66 03H 0.4 NDF 2A 33 66 02H 0.49 NDF 2A 15 67 02H 0.42 NDF 2A 14 68 02H 0.41 NDF 2A 30 68 02H 0.33 NDF 2A 12 69 03H 0.39 NDF 2A 12 70 03H 0.55 NDF 2A 14 70 03H 0.79 NDF 2A 7
71 03H 0.54 NDF 2A 13 71 04H 0.33 NDF 2A 15 71 02H 0.3 NDF 2A 12 72 02H 0.29 NDF SG-SGMP-13-2 January 2013 Revision 1
A-4 SG Row Col Locn P1 Volts Comments 2A 15 72 02H 0.33 NDF 2A 16 72 02H 0.22 NDF 2A 21 72 03H 0.53 NDF 2A 15 73 05H 0.25 NDF 2A 9
74 03H 0.38 NDF 2A 12 74 02H 0.54 NDF 2A 12 74 03H 0.87 NDF 2A 15 74 03H 0.97 NDF 2A 15 75 02H 0.28 NDF 2A 27 75 05H 0.22 NDF 2A 8
76 05H 0.34 NDF 2A 16 76 02H 0.42 NDF 2A 11 77 05H 0.48 NDF 2A 16 77 05H 0.17 NDF 2A 4
78 05H 0.39 NDF 2A 11 78 06H 0.31 NDF 2A 20 78 04H 0.19 NDF 2A 21 78 08H 0.13 NDF 2A 3
79 07H 0.75 NDF 2A 5
80 05H 0.33 NDF 2A 13 80 03H 0.47 NDF 2A 14 80 03H 0.35 NDF 2A 26 80 05H 0.18 NDF 2A 3
81 03H 1.1 NDF 2A 17 81 04H 0.39 NDF 2A 5
82 03H 0.37 NDF 2A 15 82 03H 0.93 NDF 2A 3
84 03H 0.82 NDF 2A 13 84 02H 0.49 NDF 2A 3
85 04H 0.99 NDF 2A 4
85 08C 0.23 NDF 2A 8
85 02H 0.21 NDF 2A 13 85 02H 0.64 NDF 2A 20 85 03H 0.27 NDF 2A 13 86 03H 0.42 NDF 2A 14 86 04H 0.55 NDF 2A 2
88 02H 0.24 NDF 2A 18 88 05H 0.36 NDF 2A 8
91 04H 0.53 NDF 2A 13 91 05H 0.56 NDF SG Row Col Locn P1 Volts Comments 2A 2
92 03H 0.39 NDF 2A 3
92 02H 0.31 NDF 2A 13 92 04H 0.61 NDF 2A 7
94 02H 0.27 NDF SG-SGMP-13-2 January 2013 Revision 1
A-5 DSI Indications for EOC-16 in SG-B SG Row Col Locn P1 Volts Comments 2B 8
2 03H 0.64 NDF 2B 9
4 03H 0.38 Confirmed 2B 9
5 03H 0.24 NDF 2B 10 6
02H 0.16 NDF 2B 9
8 03H 0.24 NDF 2B 11 8 03H 0.42 NDF 2B 14 8
03H 0.24 NDF 2B 8
9 02H 0.32 NDF 2B 8
9 03H 0.25 NDF 2B 11 9
06H 0.35 NDF 2B 11 9
07H 0.36 NDF 2B 10 10 02H 0.23 NDF 2B 12 10 02H 0.39 NDF 2B 9
11 02H 0.34 NDF 2B 9
11 03H 0.59 NDF 2B 20 11 02H 0.83 NDF 2B 5
12 03H 0.39 NDF 2B 15 12 03H 0.17 NDF 2B 18 12 03H1 0.21 NDF 2B 22 12 03H1 0.14 NDF 2B 14 13 02H 0.59 NDF 2B 5
14 03H 0.63 NDF 2B 10 14 02H 0.44 NDF 2B 10 15 02H 0.32 NDF 2B 12 15 02H1 0.41 NDF 2B 12 15 03H1 0.58 NDF 2B 14 15 03H 0.39 NDF 2B 19 15 02H 0.3 NDF 2B 19 15 04H 0.3 NDF 2B 6
16 03H1 0.32 NDF 2B 9
16 03H1 0.47 NDF 2B 12 16 03H 0.34 NDF 2B 13 16 02H 0.75 NDF 2B 13 16 03H 0.25 NDF 2B 20 16 03H1 0.4 NDF 2B 30 16 04H 0.23 NDF 2B 9
17 02H 0.59 NDF 2B 9
17 03H 0.19 NDF SG Row Col Locn P1 Volts Comments 2B 10 17 02H 0.47 NDF 2B 25 17 02H 0.26 NDF 2B 8
18 02H 0.53 NDF 2B 8
18 03H 0.32 NDF 2B 9
18 02H 0.22 NDF 2B 9
18 03H 0.64 NDF 2B 10 18 02H 0.71 NDF 2B 11 18 02H 0.57 NDF 2B 18 18 02H1 0.44 NDF 2B 20 19 04H 0.66 NDF 2B 5
20 03H 0.37 NDF 2B 8
20 02H 0.3 NDF 2B 11 20 02H1 0.54 NDF 2B 29 20 03H 0.72 NDF 2B 30 20 04H1 0.26 NDF 2B 11 21 03H 0.34 NDF 2B 5
22 04H 0.48 NDF 2B 8
22 02H 0.28 NDF 2B 12 22 02H1 0.49 NDF 2B 4
23 02H 0.22 NDF 2B 4
23 06H 0.24 NDF 2B 6
23 04H 0.28 NDF 2B 20 23 02H 0.19 Confirmed 2B 31 23 02H 0.77 NDF 2B 2
24 02H 0.31 NDF 2B 12 24 02H 0.54 NDF 2B 12 24 04H 0.32 NDF 2B 37 24 05H 0.15 NDF 2B 11 25 03H 0.42 Confirmed 2B 14 25 02H 0.52 NDF 2B 36 25 05H 0.44 NDF 2B 6
26 02H 0.41 NDF 2B 9
26 02H 0.42 NDF 2B 9
26 03H 0.79 NDF 2B 10 26 02H 0.48 NDF 2B 15 26 03H 0.36 NDF 2B 6
27 03H1 0.37 Confirmed 2B 14 27 03H 0.28 NDF SG-SGMP-13-2 January 2013 Revision I
A-6 SG Row Col Locn P1 Volts Comments 2B 15 27 02H 0.23 NDF 2B 16 27 03H 0.38 NDF 2B 29 27 03H 0.56 NDF 2B 30 27 02H 0.54 NDF 2B 2
28 02H 0.7 NDF 2B 5
28 02H 0.56 NDF 2B 14 28 05H 0.28 NDF 2B 18 28 04H 0.34 NDF 2B 18 29 02H 0.6 NDF 2B 19 29 02H 1.09 NDF 2B 19 29 03H 0.97 NDF 2B 24 29 05H 0.26 NDF 2B 25 29 02H 0.22 NDF 2B 32 29 05H 0.22 NDF 2B 18 30 04H 0.24 NDF 2B 24 30 03H 0.26 NDF 2B 26 30 03H 0.63 NDF 2B 16 31 02H 0.32 NDF 2B 29 31 05H 0.38 NDF 2B 32 31 02H 0.67
+PointOnly 2B 33 31 07H 0.47 NDF 2B 39 31 05H 0.24 NDF 2B 40 31 05H 0.23 NDF 2B 41 31 05H 0.28 NDF 2B 3
32 03H1 0.43 NDF 2B 4
32 03H 0.15 NDF 2B 14 32 02H 0.38 NDF 2B 24 32 03H 0.27 NDF 2B 29 32 03H 0.23 NDF 2B 29 32 05H 0.67 NDF 2B 30 32 03H 0.27 NDF 2B 31 32 03H 0.78 NDF 2B 31 32 05H 0.32 NDF 2B 33 32 02H 0.58 NDF 2B 34 32 02H 0.26 NDF 2B 37 32 03H 0.85 NDF 2B 17 33 02H 0.52 NDF 2B 17 33 03H1 0.55 Confirmed 2B 23 33 03H1 0.41 NDF 2B 39 33 03H1 0.27 NDF SG Row Col Locn P1 Volts Comments 2B 29 34 03H 0.48 NDF 2B 11 35 02H 0.16 NDF 2B 14 35 06H 0.26 NDF 2B 17 35 03H1 0.54 NDF 2B 29 35 04H 0.46 Confirmed 2B 34 35 03H 0.51 NDF 2B 38 35 02H 0.62 NDF 2B 14 36 03H 0.59 NDF 2B 15 36 02H1 0.23 NDF 2B 18 36 03H1 1.04 NDF 2B 19 36 02H 0.94 NDF 2B 22 36 03H 0.28 NDF 2B 8
37 03H 0.39 NDF 2B 10 37 03H1 0.29 NDF 2B 13 37 03H 0.35 NDF 2B 16 37 02H 0.41 NDF 2B 16 37 04H 0.25 Confirmed 2B 18 37 03H 0.37 NDF 2B 29 37 03H 0.8 NDF 2B 31 37 03H 0.53 NDF 2B 33 37 04H 0.18 NDF 2B 34 37 03H 0.63 NDF 2B 18 38 03H 0.29 NDF 2B 29 38 02H 0.52 Confirmed 2B 13 39 07H1 0.37 NDF 2B 14 39 02H 0.33 NDF 2B 19 39 03H 0.85 NDF 2B 19 39 04H 0.49 NDF 2B 26 39 03H 0.17 NDF 2B 31 39 02H1 0.38 NDF 2B 31 39 03H 0.39 NDF 2B 29 40 03H 0.95 NDF 2B 35 40 02H 0.42 NDF 2B 4
41 04H1 0.36 NDF 2B 10 41 07H 0.19 NDF 2B 28 41 02H 0.43 NDF 2B 29 41 02H 0.56 NDF 2B 11 42 03H 0.17 NDF 2B 17 42 03H 0.46 NDF 2B 18 42 02H1 0.26 NDF SG-SGMP-13-2 January 2013 Revision I
A-7 SG Row Col Locn P1 Volts Comments 2B 24 42 02H 0.67 NDF 2B 36 42 03H 0.24 NDF 2B 40 42 02H 0.35 NDF 2B 1
43 02H 0.53 NDF 2B 4
43 02H 0.29 NDF 2B 4
44 02H1 0.24 NDF 2B 16 44 02H 0.37 NDF 2B 17 44 02H 0.51 Confirmed 2B 33 44 02H 0.4 NDF 2B 19 45 02H 0.43 NDF 2B 21 45 04H 0.28 NDF 2B 27 46 06H 0.22 NDF 2B 13 47 02H 0.23 Confirmed 2B 3
48 05H1 1.4 NDF 2B 4
48 03H 0.5 NDF 2B 34 48 02H 0.57 NDF 2B 34 48 03H 0.81 NDF 2B 34 48 04H 0.41 NDF 2B 44 48 02H1 0.62 Confirmed 2B 10 50 02H1 0.32 NDF 2B 19 50 03H 0.68 NDF 2B 30 50 04H 0.6 NDF 2B 12 51 02H 0.18 NDF 2B 15 51 02H 0.36 Confirmed 2B 19 51 02H 0.64 NDF 2B 19 51 03H 0.56 NDF 2B 24 51 08H1 0.29 NDF 2B 34 51 02H 1.44 NDF 2B 34 51 03H 0.65 NDF 2B 42 51 04H 0.49 NDF 2B 1
52 02H 0.33 NDF 2B 4
52 03H 0.52 NDF 2B 5
52 02H 0.43 NDF 2B 6
52 02H 0.2 NDF 2B 7
52 02H 0.72 NDF 2B 9
52 02H 0.32 NDF 2B 9
52 03H1 0.42 NDF 2B 10 52 02H 1.15 NDF 2B 10 52 04H 0.36 NDF 2B 12 52 02H 0.58 NDF SG Row Col Locn P1 Volts Comments 2B 12 52 03H 0.7 NDF 2B 15 52 02H 0.71 NDF 2B 22 52 02H 0.25 NDF 2B 22 52 03H 0.35 NDF 2B 24 52 02H 0.52 NDF 2B 31 52 02H1 0.51 NDF 2B 6
53 02H 0.52 NDF 2B 6
53 03H 0.23 NDF 2B 8
53 02H 0.79 NDF 2B 10 53 02H 0.46 NDF 2B 11 53 02H 0.43 NDF 2B 13 53 02H 0.39 NDF 2B 18 53 03H 0.53 NDF 2B 18 53 04H1 0.34 NDF 2B 21 53 03H 0.97 NDF 2B 21 53 05H 0.28 NDF 2B 22 53 02H 0.21 NDF 2B 27 53 03H 0.28 NDF 2B 32 53 02H1 0.84 NDF 2B 2
54 04H 0.2 NDF 2B 3
54 02H 0.49 NDF 2B 4
54 02H 0.43 NDF 2B 5
54 02H 0.39 NDF 2B 5
54 03H 0.55 NDF 2B 7
54 02H 0.18 NDF 2B 10 54 02H 0.27 NDF 2B 14 54 02H 0.6 NDF 2B 14 54 03H 0.4 NDF 2B 21 54 02H 1.36 NDF 2B 3
55 02H 0.51 NDF 2B 16 55 05H 0.32 NDF 2B 32 55 02H 0.8 NDF 2B 32 55 05H 0.24 NDF 2B 1
56 02H 0.46 NDF 2B 4
56 04H 0.32 NDF 2B 5
56 03H 0.96 NDF 2B 7
56 02H1 0.5 NDF 2B 8
56 03H 0.46 NDF 2B 10 56 02H 0.42 NDF 2B 13 56 03H 0.73 NDF SG-SGMP-1 3-2 January 2013 SG-SGMP-13-2 January 2013 Revision 1
A-8 SG Row Col Locn P1 Volts Comments 2B 23 56 02H 0.48 NDF 2B 24 56 02H 0.4 NDF 2B 29 56 02H 1.01 NDF 2B 1
57 04H1 0.69 NDF 2B 4
57 02H 0.59 NDF 2B 4
57 04H 0.19 NDF 2B 11 57 03H 0.28 NDF 2B 14 57 02H 0.79 NDF 2B 14 57 03H 0.47 NDF 2B 18 57 03H 0.21 NDF 2B 37 57 02H 0.45 NDF 2B 37 57 05H 0.23 NDF 2B 4
58 02H 0.43 NDF 2B 5
58 02H 0.23 NDF 2B 6
58 02H 0.59 NDF 2B 10 58 05H 0.24 NDF 2B 11 58 03H 0.23 NDF 2B 18 58 02H 0.64 NDF 2B 24 58 03H 0.51 NDF 2B 36 58 05H 0.44 NDF 2B 4
59 02H 0.26 NDF 2B1 4
59 03H1 0.34 NDF 2B 8
59 02H 0.27 NDF 2B 9
59 03H 0.45 NDF 2B 9
59 05H 0.32 NDF 2B 3
60 02H 0.57 NDF 2B 3
60 03H1 0.68 NDF 2B 5
60 02H 0.35 NDF 2B 3
61 06H 0.34 NDF 2B 6
61 08H 0.32 NDF 2B 11 61 02H 1.42 NDF 2B 11 61 03H 0.42 NDF 2B 12 61 03H 0.96 NDF 2B 14 61 02H 0.36 NDF 2B 14 61 03H 0.75 NDF 2B 14 61 05H 0.57 NDF 2B 16 61 02H 0.55 NDF 2B 18 61 03H 0.41 NDF 2B 23 61 02H 0.38 NDF 2B 32 61 02H 0.41 NDF SG Row Col Locn P1 Volts Comments 2B1 2 62 03H 0.67 NDF 2B 22 62 03H 0.77 NDF 2B 24 62 03H 0.64 NDF 213 33 62 02H 0.72 NDF 2B 2
63 04H 0.67 NDF 2B 3
63 02H 0.8 NDF 2B 3
63 03H 0.52 NDF 2B 4
63 04H 0.59 NDF 2B 5
63 04H 0.13 NDF 2B 6
63 02H 0.23 NDF 2B 7
63 07H 0.42 NDF 2B 10 63 02H1 0.26 NDF 2B 14 63 03H 0.38 NDF 2B 23 63 03H 0.22 NDF 2B 24 63 03H 0.7 NDF 213 28 63 03H1 0.54 NDF 2B 5
64 02H1 0.17 NDF 2B 5
64 03H 0.42 NDF 2B 9
64 04H 0.89 Confirmed 2B 17 64 02H 0.17 NDF 2B 18 64 03H 0.43 NDF 2B1 22 64 02H 0.39 NDF 2B 25 64 06H 0.45 NDF 2B 2
67 06H1 0.28 NDF 2B 5
68 02H 0.55 NDF 2B 17 68 02H 0.51 NDF 2B 17 68 03H 0.71 NDF 2B 17 68 04H 1.09 Confirmed 2B 24 68 08H1 0.31 NDF 2B 27 68 02H 0.38 NDF 2B1 18 69 05H 0.54 NDF 2B 2
70 05H 0.82 NDF 2B 14 70 02H 0.55 NDF 2B 20 70 02H 0.36 NDF 2B 10 71 05H 0.4 NDF 2B 15 71 05H 0.56 NDF 2B 16 71 02H 0.19 NDF 2B 19 71 05H 0.42 NDF 2B 24 71 05H 0.38 NDF 2B 31 71 05H 0.26 NDF SG-SGMP-13-2 January 2013 Revision I
A-9 SG Row Col Locn P1 Volts Comments 2B 3
72 03H 0.62 NDF 2B 2
73 03H 0.17 NDF 2B 2
73 04H 0.22 NDF 2B 5
73 02H 0.37 NDF 2B 13 73 02H 0.34 NDF 2B 19 74 02H 0.29 NDF 2B 5
75 04H 0.22 NDF 2B 7
75 02H 0.4 NDF 2B 11 75 02H 0.99 NDF 2B 15 75 02H 0.13 NDF 2B 15 75 04H 0.09 NDF 2B 21 75 02H 0.13 NDF 2B 18 76 03H 0.75 NDF 2B 19 76 02H 0.34 NDF 2B 31 76 02H 0.48 NDF 2B 13 77 03H 0.78 NDF 2B 32 77 02H 0.57 NDF 2B 10 78 04H 0.41 NDF 2B 13 78 02H 0.24 NDF 2B 19 78 02H 0.33 NDF 2B 26 78 02H 0.33 NDF 2B 30 78 02H 0.72 NDF 2B 30 78 04H 0.42 NDF 2B 31 78 02H 0.4 NDF 2B 31 78 03H 1.16 NDF 2B 25 79 08H 0.46 NDF 2B 30 79 02H 0.11 NDF 2B 9
80 02H 0.65 NDF 2B 15 80 04H 0.29 NDF 2B 5
81 05H 0.38 NDF 2B 20 81 02H 0.4 NDF 2B 28 81 02H 0.42 NDF 2B 30 81 03H 0.28 NDF 2B 11 83 03H 0.7 NDF 2B 11 83 04H 0.69 NDF 2B 14 84 04H 0.21 NDF 2B 24 84 05H 0.29 NDF 2B 9
85 02H 0.8 NDF 2B 13 85 02H 0.35 NDF 2B 19 85 02H 0.27 NDF SG Row Col Locn P1 Volts Comments 2B 13 86 02H 0.19 NDF 2B 23 86 02H 0.23 NDF 2B 15 87 02H 0.33 NDF 2B 3
88 04H 0.26 NDF 2B 14 88 02H 0.32 NDF 2B 3
89 04H 0.55 NDF 2B 10 89 02H1 0.48 NDF 2B 20 89 02H1 0.35 NDF 2B 13 91 02H 0.55 NDF 2B 5
92 02H 0.45 NDF 2B 9
92 02H 1.05 NDF 2B 5
93 03H 0.48 NDF 2B 9
93 02H 0.27 NDF 2B 2
94 04H 0.53 NDF SG-SGMP-13-2 January 2013 Revision I
A-10 DSI Indications for EOC-16 in SG-C SG Row Col Locn P1 Volts Comments 2C 8
2 08H 0.61 NDF 2C 4
3 04H 0.19 NDF 2C 15 5
04H 0.74 NDF 2C 5
6 03H 0.47 NDF 2C 5
6 04H 0.3 NDF 2C 5
7 02H 0.4 NDF 2C 5
7 03H 0.73 NDF 2C 11 7
02H 0.63 NDF 2C 10 8
02H 0.87 NDF 2C 3
9 06H 0.18 NDF 2C 10 9
03H 0.45 NDF 2C 12 9
02H 0.54 NDF 2C 17 9
04H 0.4 Confirmed 2C 10 10 02H 0.82 NDF 2C 10 10 03H 0.66 NDF 2C 23 10 02H 0.67 NDF 2C 15 14 03H 0.57 NDF 2C 17 14 04H 0.26 NDF 2C 31 14 05H 0.28 NDF 2C 5
15 03H 0.48 NDF 2C 16 15 03H 0.72 NDF 2C 18 15 06H 0.17 NDF 2C 11 17 02H 1.11 NDF 2C 16 17 02H 0.62 NDF 2C 17 17 02H 0.38 NDF 2C 25 17 03H 0.52 NDF 2C 31 17 04H 0.41 NDF 2C 3
18 03H 0.38 NDF 2C 5
18 02H 0.61 NDF 2C 17 18 02H 0.58 NDF 2C 21 18 02H 0.43 NDF 2C 21 18 03H 0.6 NDF 2C 22 18 02H 0.53 NDF 2C 5
19 02H 0.61 NDF 2C 32 19 05H 0.28 NDF 2C 9
20 04H 0.32 NDF 2C 22 20 02H 1.03 NDF 2C 27 20 02H 0.73 NDF 2C 36 20 03H 0.43 NDF v_ _
SG Row Col Locn P1 Volts Comments 2C 27 22 02H 0.41 NDF 2C 31 22 02H 0.34 NDF 2C 35 22 02H 0.31 NDF 2C 6
23 02H 0.4 NDF 2C 8
23 02H 0.7 NDF 2C 8
24 02H 0.6 NDF 2C 10 24 03H 0.5 NDF 2C 17 24 04H 0.16 NDF 2C 22 24 03H 0.43 NDF 2C 26 24 06H 0.43 NDF 2C 27 24 04H 0.3 NDF 2C 30 24 02H 0.46 NDF 2C 34 24 07H 0.37 NDF 2C 21 25 04H 0.18 NDF 2C 30 25 04H 0.24 NDF 2C 32 25 03H 0.42 NDF 2C 40 25 03H 0.23 NDF 2C 4
26 03H 0.79 NDF 2C 17 26 03H 0.25 NDF 2C 19 26 03H 0.38 NDF 2C 25 26 04H 0.25 NDF 2C 29 26 05H 0.7 NDF 2C 34 26 02H 0.98 NDF 2C 36 26 05H 0.66 NDF 2C 37 26 05H 0.14 NDF 2C 28 27 05H 0.44 NDF 2C 36 27 05H 0.34 NDF 2C 41 27 04H 0.35 NDF 2C 23 28 03H 0.4 NDF 2C 14 29 04H 0.18 Confirmed 2C 19 29 02H 0.47 NDF 2C 25 29 03H 0.46 NDF 2C 29 29 03H 0.9 NDF 2C 31 29 04H 0.66 NDF 2C 6
30 02H 0.47 NDF 2C 6
30 03H 0.26 NDF 2C 9
30 02H 0.36 NDF 2C 12 30 02H 0.52 NDF 2C 27 30 02H 0.6 NDF SG-SGMP-13-2 January 2013 SG-SGMP-13-2 January 2013 Revision I
A-11 SG Row Col Locn P1 Volts Comments 2C 25 31 02H 0.51 NDF 2C 30 31 03H 0.37 NDF 2C 30 31 04H 0.46 NDF 2C 9
32 02H 0.43 NDF 2C 13 32 02H 0.27 NDF 2C 42 32 04H 0.44 NDF 2C 4
33 02H 0.98 NDF 2C 22 33 02H 0.52 NDF 2C 25 33 0811 0.19 NDF 2C 24 34 08H 0.51 NDF 2C 25 34 02H 0.85 NDF 2C 25 34 03H 0.93 NDF 2C 25 34 05H 0.67 NDF 2C 33 34 06H 0.54 NDF 2C 35 34 03H 0.59 NDF 2C 35 34 04H 0.17 NDF 2C 3
35 05H 0.2 NDF 2C 9
35 02H 0.58 NDF 2C 12 35 04H 0.2 NDF 2C 15
- 35. 02H 0.13 NDF 2C 15 35 03H 0.25 NDF 2C 17 35 03H 1
Confirmed 2C 28 35 02H 0.85 NDF 2C 10 36 02H 0.28 NDF
.2C 11 36 02H 0.66 NDF 2C 9
37 02H 0.53 NDF 2C 10 37 02H 0.94 NDF 2C 23 37 02H 0.75 NDF 2C 29 37 02H 0.51 NDF 2C 9
38 03H 0.4 NDF 2C 10 38 07H 0.47 NDF 2C 14 38 02H 0.49 NDF 2C 15 38 04H 0.46 Confirmed 2C 18 38 02H 0.73 NDF 2C 19 38 02H 0.62 Confirmed 2C 19 38 05H 1.07 NDF 2C 26 38 05H 0.49 NDF 2C 29 38 05H 0.48 NDF 2C 35 38 07H 0.26 NDF 2C 3
39 07H1 0.36 NDF SG Row Col Locn P1 Volts Comments 2C 4
39 07H 0.6 Confirmed 2C 9
39 05H 0.54 NDF 2C 14 39 05H 0.54 NDF 2C 15 39 02H 0.46 NDF 2C 23 39 02H 0.53 NDF 2C 23 39 05H 0.47 NDF 2C 26 39 05H 0.54 NDF 2C 34 39 05H 0.36 NDF 2C 7
40 03H 0.5 NDF 2C 7
40 04H 0.66 NDF 2C 9
41 02H 0.33 NDF 2C 24 41 02H 0.72 NDF 2C 24 41 04H 0.41 Confirmed 2C 30 41 02H 0.22 NDF 2C 11 42 02H 0.9 NDF 2C 23 42 02H 0.59 NDF 2C 23 42 03H 0.62 NDF 2C 26 42 02H 0.47 NDF 2C 28 42 02H 0.34 NDF 2C 28 42 04H 0.32 NDF 2C 38 42 05H 0.18 NDF 2C 8
43 03H 0.24 NDF 2C 10 43 02H 0.33 NDF 2C 13 43 02H 0.27 NDF 2C 13 43 03H 0.33 NDF 2C 17 43 02H 0.7 NDF 2C 29 43 03H 0.28 NDF 2C 9
44 03H 0.33 NDF 2C 10 44 02H 0.87 NDF 2C 26 44 06H 0.26 NDF 2C 28 44 02H 0.38 NDF 2C 41 44 04H 0.16 NDF 2C 3
45 02H 0.55 NDF 2C 9
45 05H 0.49 NDF 2C 9
45 06H 0.4 NDF 2C 16 46 04H 0.55 NDF 2C 9
47 02H 0.5 NDF 2C 18 47 03H 0.64 NDF 2C 25 47 03H 0.44 NDF 2C 25 47 08H 0.52 NDF SG-SGMP-13-2 January 2013 SG-SGMP-13-2 January 2013 Revision I
A-12 SG Row Col Locn P1 Volts Comments 2C 29 47 02H 0.83 NDF 2C 4
48 02H 0.27 NDF 2C 17 48 02H 0.83 NDF 2C 18 48 02H 0.94 NDF 2C 18 48 03H 0.72 NDF 2C 18 48 04H 0.82 NDF 2C 19 48 02H 0.76 NDF 2C 19 48 03H 0.74 NDF 2C 24 48 03H1 1.16 NDF 2C 29 48 05H 0.31 NDF 2C 4
49 03H 0.69 NDF 2C 7
49 02H 0.58 NDF 2C 7
49 03H 0.41 NDF 2C 11 49 02H 0.92 NDF 2C 11 49 03H 0.77 NDF 2C 17 49 02H 0.53 NDF 2C 31 49 02H 0.36 NDF 2C 14 50 02H 0.58 NDF 2C 17 50 03H 0.49 Confirmed 2C 18 50 02H1 0.41 NDF 2C 24 50 02H 0.42 NDF 2C 28 50 03H 0.29 NDF 2C 41 50 08H 0.24 NDF 2C 10 51 02H 1.56 NDF 2C 10 51 05H 0.79 NDF 2C 18 51 02H 0.95 NDF 2C 37 52 06H 0.32 NDF 2C 18 53 02H 1.05 NDF 2C 35 53 06H 0.21 NDF 2C 36 53 02H 0.68 Confirmed 2C 40 53 04H 0.24 NDF 2C 6
54 03H 0.74 NDF 2C 9
54 02H 0.38 NDF 2C 9
54 04H 0.78 NDF 2C 10 54 02H 0.85 NDF 2C 10 54 03H 0.9 NDF 2C 14 54 02H 0.58 NDF 2C 18 54 02H 0.95 NDF 2C 18 54 03H 0.36 NDF 2C 19 54 02H1 0.41 NDF SG Row Col Locn P1 Volts Comments 2C 25 54 02H 0.4 NDF 2C 6
55 02H 0.39 NDF 2C 12 55 02H 0.8 NDF 2C 16 55 06H1 0.55 NDF 2C 18 55 02H 0.53 NDF 2C 34 55 03H 0.28 NDF 2C 24 56 03H 0.8 NDF 2C 16 57 03H 0.41 NDF 2C 19 57 04H1 0.65 NDF 2C 19 57 05H 0.74 NDF 2C 24 57 02H 0.41 NDF 2C 29 57 05H 0.32 NDF 2C 3
58 0211 1.27 NDF 2C 7
58 02H 0.74 NDF 2C 34 58 02H 0.61 NDF 2C 34 58 05H 0.35 NDF 2C 13 59 03H 0.39 NDF 2C 14 59 03H 0.38 NDF 2C 34 59 02H 0.85 NDF 2C 3
60 02H 0.5 NDF 2C 3
60 03H 0.37 NDF 2C 25 60 02H 0.53 NDF 2C 27 60 02H 0.77 NDF 2C 30 60 02H 0.6 NDF 2C 31 60 02H 0.39 NDF 2C 33 60 07H 0.24 NDF 2C 15 61 02H 0.4 NDF 2C 17 61 02H 1.12 NDF 2C 17 61 03H 0.42 NDF 2C 22 61 03H 0.44 NDF 2C 24 61 02H 0.73 NDF 2C 25 61 02H 0.78 NDF 2C 30 61 02H 0.53 NDF 2C 30 61 04H 0.5 Confirmed 2C 31 61 03H 0.47 NDF 2C 5
62 02H 0.19 NDF 2C 11 62 03H 0.71 NDF 2C 15 62 02H 0.3 NDF 2C 18 62 02H1 0.54 NDF 2C 18 62 03H1 0.59 NDF SG-SGMP-13-2 January 2013 SG-SGM-P-13-2 January 2013 Revision I
A-13 SG Row Col Locn P1 Volts Comments 2C 18 62 04H 0.16 NDF 2C 21 62 02H 0.54 NDF 2C 25 62 04H 0.39 NDF 2C 6
63 02H1 0.53 NDF 2C 8
63 06H 0.28 NDF 2C 13 63 02H 0.47 NDF 2C 16 63 02H 0.3 NDF 2C 17 63 02H 0.75 NDF 2C 24 63 04H 0.35 NDF 2C 29 63 05H 0.78 NDF 2C 30 63 04H 0.88 NDF 2C 32 63 03H 0.64 Confirmed 2C 3
64 02H 0.52 NDF 2C 3
64 03H 0.77 NDF 2C 13 64 02H 0.68 NDF 2C 22 64 03H 0.21 NDF 2C 31 64 04H 0.39 Confirmed 2C 9
65 06H 0.64 NDF 2C 25 65 02H 0.34 NDF 2C 26 65 03H 0.19 NDF 2C 5
66 03H 0.64 NDF 2C 17 66 02H 0.46 NDF 2C 31 66 02H 0.44 NDF 2C 31 66 05H 0.64 NDF 2C 7
67 02H 0.71 NDF 2C 17 67 02H 0.72 NDF 2C 18 67 02H 0.45 NDF 2C 18 67 03H 0.83 NDF 2C 21 67 07H 0.37 NDF 2C 17 68 02H 0.41 NDF 2C 4
69 03H 0.55 NDF 2C 23 69 03H 0.35 NDF 2C 27 69 02H 0.2 NDF 2C 11 70 03H 0.7 NDF 2C 12 70 02H 0.48 NDF 2C 12 70 03H 0.28 NDF 2C 14 70 08H 0.35 NDF 2C 26 70 03H 0.66 NDF 2C 5
71 02H 0.49 NDF 2C 8
72 03H 0.47 NDF SG Row Col Locn P1 Volts Comments 2C 10 72 0211 0.42 NDF 2C 10 72 03H 0.24 NDF 2C 11 72 03H 0.52 NDF 2C 26 72 08H 0.48 NDF 2C 16 73 02H 0.72 NDF 2C 18 73 03H 0.46 NDF 2C 28 73 03H 0.25 NDF 2C 25 74 02H 0.36 Confirmed 2C 20 75 02H 0.65 NDF 2C 31 75 02H 0.26 Confirmed 2C 4
76 03H 0.33 NDF 2C 5
76 03H 0.58 NDF 2C 20 76 02H 0.74 Confirmed 2C 25 76 02H 0.76 NDF 2C 25 76 05H 0.3 NDF 2C 27 76 03H 0.74 NDF 2C 22 77 03H1 0.33 NDF 2C 23 77 02H 0.56 NDF 2C 31 77 06H 0.27 NDF 2C 2
78 03H 0.32 NDF 2C 6
78 03H 0.74 NDF 2C 10 78 03H 0.28 NDF 2C 19 79 02H 0.78 NDF 2C 25 79 02H 0.39 NDF 2C 2
80 03H 0.35 NDF 2C 3
80 02H 0.5 NDF 2C 7
80 03H 0.3 NDF 2C 15 80 03H 0.15 NDF 2C 12 83 03H 0.3 NDF 2C 6
84 03H 0.88 NDF 2C 8
84 03H 0.53 NDF 2C 2
85 03H 0.54 NDF 2C 20 85 03H 0.36 NDF 2C 28 85 02H 0.49 NDF 2C 5
86 08H1 1.07 NDF 2C 15 87 03H 0.34 NDF 2C 11 88 05H 0.25 NDF 2C 5
89 02H 0.54 NDF 2C 6
92 04H 0.65 NDF 2C 3
93 014H 0.36 NDF SG-SGMP-13-2 January 2013 SG-SGM4P-13-2 January 2013 Revision I
B-1 APPENDIX B Implementation of Probe Variability and Probe Wear Criteria at Beaver Valley Unit 2 B.1 Probe Variability Implementation:
GL 95-05, Attachment 1, 3.c.2 states "Once the probe has been calibrated on the 20-percent through-wall holes, the voltage response of the new bobbin coil probes for the 40-percent to 100-percent American Society of Mechanical Engineers (ASME) through-wall holes should not differ from the nominal voltage by more than +/- 10 percent. "
An alternative to this approach was approved in the safety evaluation for BVPS Unit 2's License Amendment 101 which states, "With respect to probe variability, the licensee proposed to follow an approach developed through the Nuclear Energy Institute (NEI). The proposed procedures and methodology are described in the October 15, 1996, letter from Alex Marion (NEI) to Brian Sheron (NRC). Based on a review of data used originally to support the position that only the primary frequency was required for tests on new probes to verify that they met the voltage variability specification of +/-10 percent of the nominal response, the industry indicated that testing at only the primary frequency was not sufficient. The proposed approach specifies that the voltage responses from the primary frequency and mix frequency channels of new probes be within +/-10 percent of the nominal voltage responses when voltages are normalized to the 20 percent through-wall flaw values. The nominal voltage responses were established as the average voltages obtained from the American Society of Mechanical Engineers' standard drilled hole flaws for at least 10 production probes. In a letter from Brian Sheron (NRC) to David Modeen (NEI) dated July 29, 1997, the NRC indicated that, based on the NRC staffs review of probe test data, this alternative method to Section 3.c.2 of Attachment 1 of GL 95-05 to address probe variability is acceptable. Therefore, the licensee's proposal to follow the industry approach is acceptable."
This check was not performed for the bobbin probes used during 2R15. The probes were not procured from the manufacturers requiring certification that they met these criteria. FENOC had always intended to perform the inspections at BVPS Unit 2 as if FENOC were implementing GL 95-05. The fact that the probes being used were not being certified to this criteria was not known until the same issue arose at Sequoyah.
In preparation for 2R16, requests were made to two probe vendors (Zetec and CoreStar) to provide certification that their probes met the 10% probe variability criteria. Both vendors refused to provide this certification. So Westinghouse developed and implemented its own Probe Variability Testing Plan (MRS-TRC-2169). Under this plan 59 probes were tested and 58 passed.
The breakdown by manufacturer was 25 of 25 CoreStar probes and 33 of 34 Zetec probes met the criteria.
So while no probe variability testing was performed prior to 2R15, the 2R16 results suggest that there is a high confidence that probes made by the same manufacturers to the same drawings and specifications would perform similarly and therefore the bobbin sizing results from 2R15 are acceptable.
SG-SGMP-13-2 January 2013 Revision 1
B-2 B.2 Probe Wear Implementation GL 95-05, Attachment 1, 3.c.3 states, "Probe wear should be controlled by either an inline measurement device or through use of a periodic wear measurement. When utilizing the periodic measurement approach, if a probe is found to be out of specification, all tubes inspected since the last successful calibration should be reinspected with the new calibrated probe. Alternatives to this approach which provide equivalent detection and sizing and are consistent with the tube integrity analyses discussed in Section 2, may be permitted subject to NRC approval."
An alternative to this approach was approved in the safety evaluation for BVPS Unit 2's License Amendment 101 which states, "Section 3.c.3 of Attachment I to GL 95-05 specifies guidance for probe wear. The licensee proposed to use an alternative to Section 3.c.3. The alternative approach, developed through the NEI, specifies that if the probe does not satisfy the voltage variability criterion for wear of +/- 15. percent limit before its replacement, all tubes which exhibited flaw signals with voltage responses measured at 75 percent or greater of the lower repair limit must be reinspected with a bobbin probe satisfying the +/- 15percent wear standard criterion. The voltages from the reinspection should be used as the basis for tube repair The NRC staff completed a review of the NEI proposed alternative method which was provided to the NRC in letters dated February 3, 1995, January 23, and February 23, 1996. The February 23, 1996, letter contained the NEI's agreement to incorporate the NRC staffs recommended changes to the proposed alternative method, which had been provided to the NEI by letter dated February 9, 1996. The NRC staff has concluded that, based on their review of test results for the probes and the NEI's agreement to make recommended changes, the alternative approach is acceptable.
This acceptance is documented in a letter from Brian Sheron (NRC) to Alex Marion (NEI) dated March 18, 1996. Therefore, the licensee's proposal to follow the industry approach to address probe wear is acceptable."
Implementation of probe wear measurements are covered in the BVPS Unit 2 Steam Generator Examination Guidelines, ISIE1-8, Rev.14, Attachment L, Section 3.0. Probe wear failures are addressed in Section 16.6 of the same document. During both 2R15 and 2R16 the protocol specified in Attachment L was followed. The hard copy reports documenting the probe wear checks were turned over to FENOC. The assessments prescribed in Section 16.6 were performed by the lead analyst during both 2R15 and 2R16. Documentation of these assessments is contained in the ST Max database using the Util 1 codes specified in Section 16.6.5.
SG-SGMP-13-2 January 2013 Revision 1
Enclosure B L-12-458 Unit #2 - 2R16 Steam Generator F* (F Star) Report (6 Pages Follow)