ML24306A219
ML24306A219 | |
Person / Time | |
---|---|
Site: | Wolf Creek ![]() |
Issue date: | 11/01/2024 |
From: | Boyce M Wolf Creek |
To: | Office of Nuclear Reactor Regulation, Document Control Desk |
References | |
000685 | |
Download: ML24306A219 (1) | |
Text
P.O. Box 411 l Burlington, KS 66839 l 620-364-8831 Michael T. Boyce Vice President Engineering November 01, 2024 000685 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001
Subject:
Docket No. 50-482: Results of the Steam Generator Tube Inservice Inspection During the 26th Refueling Outage to Reflect TSTF-577 Reporting Requirements Commissioners and Staff:
The Attachment, Steam Generator Tube Inspection Report, is being submitted in accordance with Wolf Creek Generating Station (WCGS) Technical Specification (TS) 5.6.10, Steam Generator Tube Inspection Report. This report provides the results of WCGS's steam generator (SG) tube inservice inspection which was performed during Refueling Outage 26 (RF26) and reflects the reporting requirements of TSTF-577. The Steam Generator Tube Inspection Report includes the following:
- a. The scope of inspections performed on each SG;
- b. The nondestructive examination techniques utilized for tubes with increased degradation susceptibility;
- c. For each degradation mechanism found:
- 1. The nondestructive examination techniques utilized;
- 2. The location, orientation (if linear), measured sizes (if available), and voltage response for each indication. For tube wear at support structures less than 20 percent through-wall, only the total number of indications needs to be reported;
- 3. A description of the condition monitoring assessment and results, including the margin predicted to exist at the inspection by the previous forward-looking tube integrity assessment; and
- 4. The number of tubes plugged during the inspection outage.
- d. An analysis summary of the tube integrity conditions predicted to exist at the next scheduled inspection (the forward-looking tube integrity assessment) relative to the applicable performance criteria, including the analysis methodology, inputs, and results;
- e. The number and percentage of tubes plugged to date, and the effective plugging percentage in each SG;
- f.
The results of any SG secondary side inspections;
- g. The primary to secondary LEAKAGE rate observed in each SG (if it is not practical to assign the LEAKAGE to an individual SG, the entire primary to secondary LEAKAGE should be conservatively assumed to be from one SG) during the cycle preceding the inspection which is the subject of the report;
000685 Page 2 of 2
- h. The calculated accident induced leakage rate from the portion of the tubes below 15.21 inches from the top of the tubesheet for the most limiting accident in the most limiting SG.
In addition, if the calculated accident induced leakage rate from the most limiting accident is less than 2.50 times the maximum operational primary to secondary leak rate, the report should describe how it was determined; and
- i.
The results of monitoring for the tube axial displacement (slippage). If slippage is discovered, the implications of discovery and corrective action shall be provided.
Enclosures I, II, III, and IV contain the requested indication details for wear greater than or equal to 20 percent through-wall at anti-vibration bar locations. The other requested indications are contained in Section 5 of the Attachment, Steam Generator Tube Inspection Report.
This letter contains no commitments. If you have any questions concerning this matter, please contact me at (620) 364-8831 x8687, or Dustin Hamman (620) 364-4204.
Sincerely, Michael T. Boyce MTB/jkt
Attachment:
Steam Generator Tube Inspection Report
Enclosures:
I Steam Generator A Indications II Steam Generator B Indications III Steam Generator C Indications IV Steam Generator D Indications cc:
A. N. Agrawal (NRC), w/a, w/e S. S. Lee (NRC), w/a, w/e J. D. Monninger (NRC), w/a, w/e Senior Resident Inspector (NRC), w/a, w/e Licensing Correspondence - ET 24-000685, w/a, w/e
Attachment to 000685 Page 1 of 27 180 Day Steam Generator Tube Inspection Report - Wolf Creek Refueling Outage 26
- 1.
DESIGN AND OPERATING PARAMETERS Steam Generator Design and Operating Parameters SG Model / Tube Material / # SGs per unit Westinghouse Model F / Alloy 600TT / 4
- of tubes per SG / Nominal Tube Dia. / tube thickness 5,626 / 0.688 in. / 0.040 in.
Support Plate Style / Material Broached Quatrefoil / Stainless Steel Last Inspection Date April 2021 (RF24)
Current Inspection Date April 2024 (RF26)
EFPM since the last inspection 31.62 EFPM Total cumulative SG EFPY 32.82 EFPY at RF26 Mode 4 initial entry May 7, 2024 (RF26)
Observed P/S Leak Rate since the last inspection and how it trended with time No leakage observed Nominal indicated value of Thot during Cycle 25 and 26 at full power 616.3 Degrees F (average of all loops). A Thot value of 618 Degrees is used for tube integrity assessments Degradation mechanism sub-population Inspection addresses additional analysis and monitoring from Operating Experiences identified in the Degradation Assessment (i.e.,
potential high residual stress tubes, ODSCC at Dings/Dents, continued degradation of previously plugged tubes, etc.)
Deviations from SGMP guidelines since the last inspection None Steam Generator Schematic Schematic is attached. See next page
Attachment to 000685 Page 2 of 27
Attachment to 000685 Page 3 of 27
- 2.
SCOPE OF INSPECTIONS PERFORMED ON EACH SG Full length bobbin and array probe inspections were performed on all tubing using the X-PROBE'. Array probe inspections were performed on all high stress tube support plate (TSP) intersections and tubesheet expansion transition regions. Motorized rotating pancake coil (MRPC) inspections were performed using the
+POINT' probe for special interest, confirmation of I-Codes, dent and ding (DNT/DNG) program and sizing of tube support and foreign object wear. Scope expansion was not required. Table 1 provides the scope of the primary side eddy current inspections.
In addition to the eddy current inspections, visual inspections were also performed in the channel head bowl cladding, divider plate, divider plate welds and previously installed tube plugs of each steam generator.
Table 1: Wolf Creek RF26 Primary Inspection Scope Inspection Probe SG A SG B SG C SG D Comment Full Length Bobbin(1)
Bobbin 100%
100%
100%
100%
Full Length Array(1)
Array 100%
100%
100%
100%
Active Tubes Adjacent to Plugged Tubes Bobbin 100%
100%
100%
100%
Hot Leg TSH+3/-15.21 Array 100%
100%
100%
100%
Cold Leg TSC +3/-3 Peripheral Tubes Array 100%
100%
100%
100%
2 tubes deep Bulge/Overexpansions at TSH+3/-15.21 Array 100%
100%
100%
100%
High Stress Tube, Full Length Bobbin 100%
100%
100%
100%
High Stress Tube TSP, TSH, TSC Array 100%
100%
100%
100%
High Stress Tube, Dents/Dings 2v
+Point 100%
100%
100%
100%
Row 1 & 2 U-bend +POINT
+POINT 100%
100%
100%
100%
Dents/Dings 5V, HL/CL/UB
+POINT 100%
100%
100%
100%
Dings/Dents 2V and 4.99V Top TSP 7H/7C
+POINT 100%
100%
100%
100%
Dings/Dents 2V and 4.99V Below Top TSP 7H/7C & UB
+POINT 25%
25%
25%
25%
Note (4)
Dents/Dings 4.99V HL/CL/UB Bobbin Array 100%
100%
100%
100%
Note (2)
All RF24 AVB Wear indications Bobbin 100%
100%
100%
100%
All RF24 and new TSP/FDB Wear, VOL, PLP/PLS Indications
+POINT 100%
100%
100%
100%
I-code indications not resolved after History Review
+POINT 100%
100%
100%
100%
Benign Signals, GEO, RRT, OBS, and BLG/OXP outside of tubesheet
+POINT 100%
100%
100%
100%
+POINT 100%
100%
100%
100%
1 tube pitch Secondary Side Foreign Objects left inservice from previous inspections
+POINT 100%
100%
100%
100%
2 tube pitches Sample of H & S bobbin codes Array 100%
100%
100%
100%
Note (3)
Sludge Height Mapping Bobbin x
x x
x Notes:
(1) Except for Row 1 & 2 U-bend region which are inspected with +POINT.
(2) Inspections of all dents/dings <5-volts are inherently completed with the bobbin and array probe 100% full-length inspections.
(3) The inspection of all H and S codes is inherently completed with the 100% full-length array probe inspection.
(4) This is a defense-in-depth diagnostic inspection as the bobbin probe is qualified for crack detection in dents/dings <5-volts.
Attachment to 000685 Page 4 of 27
- 3.
THE NONDESTRUCTIVE EXAMINATION TECHNIQUES UTILIZED FOR TUBES WITH INCREASED DEGRADATION SUSCEPTIBILITY
+Point/Rotating probe (RPC) was utilized for all tubes with increased degradation susceptibility as described in the scope of inspections. Additionally, the array probe was used to satisfy the TSTF-577, and TS 5.5.9.d.3 requirements for utilizing enhanced probe technology examination.
- 4.
THE NONDESTRUCTIVE EXAMINATION TECHNIQUES UTILIZED FOR EACH DEGRADATION MECHANISM FOUND Table 2: Examination Techniques for Degradation Found Degradation Mechanism EPRI ETSS for Detection / Probe EPRI ETSS for Sizing / Probe AVB Wear I96041.1 / Bobbin I96041.1 / Bobbin TSP Wear I96043.4 / Bobbin 96910.1 / +POINT Maintenance Wear 96004.3 / Bobbin 96004.3 / Bobbin Foreign Object Wear Volumetric, Pitting 27091.2 / Bobbin 21998.2 / +POINT 17901.x through 17906.x Series /
Array 21998.1 / +POINT Foreign Object Wear Circumference Groove 27091.2 / Bobbin 21998.2 / +POINT 17901.x through 17906.x Series /
Array 27901.2 / +POINT Axial ODSCC at Dents/Dings 10013.1 / Bobbin 22401.1 / +POINT I28432 / +POINT
Attachment to 000685 Page 5 of 27
- 5.
LOCATION, ORIENTATION, MEASURED SIZE, AND VOLTAGE RESPONSES The following degradation mechanisms were detected during the RF26 eddy current inspections, Wear at Anti-Vibration Bar (AVB) supports Wear at Broached Tube Support Plate (TSP) intersections Wear from Maintenance Activities Wear from Foreign Objects Axial ODSCC at Dents/Dings (new degradation mechanism at RF26)
The following degradation mechanisms that were reported in prior inspections (i.e., existing degradation mechanisms) and not detected in the current RF26 inspections are, Circumferential Primary Water Stress Corrosion Cracking (PWSCC) at tubesheet bulges and overexpansions within the tubesheet expansion zone H* region.
Circumferential ODSCC at top of tubesheet expansion transition region.
Wear at AVB Supports A total of 3,875 indication of AVB wear were detected during the RF26 inspection. The indication depths ranged from 5% TW to 46% TW. There were 2,927 indications that were less than a depth of 20% TW. Twenty-seven (27) indications in 24 tubes exceeded the TS 5.5.9 40% TW plugging criteria and the affected tubes were plugged. An additional tube (R44C56 in SG D) was preventatively plugged due to having elevated wear at 3 AVB supports. The indication depths were 34% TW, 39% TW, and 39% TW with growth rates ranging from 5.7% TW/EFPY to 8.0%
TW/EFPY. The largest 95th percentile growth rate each of the 4 SGs was bound by 1.98% TW/EFPY.
Prior to RF26, a detailed study was performed to evaluate the differential channel sizing performance of ETSS I96041.1 to the absolute sizing performance of ETSS 96004.3 regarding depth sizing and growth rate calculations.
Historically, the absolute channel sizing technique had been used to size AVB wear through the last inspection at RF24. As a result of this study, the bobbin sizing technique for AVB wear was changed from Appendix H ETSS 96004.3 to the Appendix I ETSS I96041.1 technique for the RF26 inspection. All AVB wear indications reported in the last two inspections (RF22 and RF24) were resized with the differential sizing technique to assure consistent trending of flaw sizes and growth rates. During the inspection a total of 3,875 indications of AVB wear were reported. This number of indications is less than the 4,071 reported during the prior inspection at RF24 and is likely due to this change from absolute depth sizing technique to differential sizing technique. The differential channel provides a more definitive flaw signal for reporting as compared to the signal from the absolute channel which can produce more false flaw reports.
Table 3 summarizes the AVB wear indications found during RF26. The enclosures identified below contain location, orientation, measured size, and voltage response of each indication of AVB wear greater than or equal to 20% through-wall. found.
Enclosure I: Steam Generator A Indications Enclosure II: Steam Generator B Indications Enclosure III: Steam Generator C Indications Enclosure IV: Steam Generator D Indications
Attachment to 000685 Page 6 of 27 Table 3: Wolf Creek RF26 AVB Wear Summary SG A SG B SG C SG D Total/Max.
Total No. Indications 819 1119 729 1208 3875
<20% TW 667 812 551 897 2927 20%-39% TW 149 296 175 301 921
>=40% TW 3
11 3
10 27 Maximum Depth (% TW) 42 44 46 43 46 Average Growth (% TW/EFPY) 0.19 0.03 0.21 0.34 0.34 95th Percentile Growth (% TW/EFPY) 1.58 1.51 1.77 1.98 1.98 Wear at Broached TSP Intersections A total of 13 indications of wear at broached TSP intersections were detected in 10 tubes. Three (3) tubes contained wear at 2 different broached lands at the same TSP elevation. The depth of the wear indications ranged from 7% TW to 27% TW with only 1 being larger than 20% TW. All wear indications were historical in nature. No tubes were plugged due to broached TSP wear. Table 4 contains the location, orientation, measured size, and voltage response of each indication of degradation found.
Table 4. RF26 Broached Support Wear SG Row Col Location Inch1 Orientation
+POINT Volts RF26
%TW A
46 31 07H
-0.22 Volumetric 0.28 12 B
14 3
02C 0.52 Volumetric 0.14 7
B 14 3
02C 0.52 Volumetric 0.15 8
B 17 5
02C
-0.48 Volumetric 0.27 13 B
34 12 7H
-0.53 Volumetric 0.10 8
B 34 12 7H
-0.5 Volumetric 0.15 12 B
36 110 07C
-0.33 Volumetric 0.67 27 B
36 110 07C
-0.33 Volumetric 0.36 17 C
40 20 04C 0.53 Volumetric 0.21 13 C
47 82 03C 0.52 Volumetric 0.31 13 D
15 65 05H 0
Volumetric 0.22 9
D 26 19 04H
-0.65 Volumetric 0.17 7
D 41 72 06H 0.53 Volumetric 0.17 7
Wear from Maintenance Activities A total of 33 bobbin coil wear indications at 24 different structures were identified in SGs B, C and D at the flow distribution baffle (FDB) during RF26. These signals were identified in Row 1 Columns 29-33 and Columns 90-94.
The degradation mechanism for these indications was wear caused by pressure pulse cleaning (PPC) in an earlier outage. All bobbin indications have been traced back to the 1994 inspection showing no significant changes in the signals. The signals were sized with a bobbin probe with a baffle plate wear standard for wear measurements in prior inspections. The sizing measurements indicated the deepest percent through-wall penetration being 22%
TW from all inspections from RF15 through RF24. To optimize the eddy current process, the maintenance activity wear indications are monitored for change. Indications that show no change in flaw signal character from prior data are assigned a History No Change (HNC) analysis result code. If there are changes in the signal from previous data, an I-code is assigned that requires examination with diagnostic technique to determine the cause
Attachment to 000685 Page 7 of 27 of the change. The current inspection showed that all indications have not changed over that timeframe. No tubes were plugged resulting from these indications. The maintenance activity wear indications at FDB supports are shown in Table 5 with the historical maximum flaw depth and the outage when the depth was observed.
A total of 16 wear indications were reported in SG C during RF26 that had been previously reported in prior inspections. These indications were all in Row 1 tubes at an elevation of approximately 15 inches above the top of the cold leg tubesheet. The indications were caused by interaction from PPC maintenance tooling from a previous outage. The tubes were all between Columns 4 and 20. Historically, the largest wear indication was 18%
TW as measured from inspections through RF24. The indications were monitored for change in the current inspection and an HNC analysis code is applied for signals that have not changed, as described above. The current inspection results showed that all indication signals remained unchanged from prior inspections. The indications have been caused by a prior pressure pulse cleaning, with the tooling fretting on the tubes along the tube lane.
These indications are shown in Table 6 along with the historical maximum flaw depth and the outage when the depth was observed. Since these indications were caused by interaction from maintenance tooling and the tooling is no longer present, the flaw degradation mechanism that would cause flaw growth has been removed and, therefore, has no growth. No tubes were plugged resulting from these indications.
Table 5. Maintenance Activity Wear at FDBs from PPC SG Row Col Location Inch1 Bobbin Volts Historical Maximum
%TW Outage of Maximum
%TW RF26 Result B
1 31 FBC
-0.32 2.37 18 RF19 HNC B
1 31 FBC
+0.30 0.97 22 RF19 HNC B
1 32 FBC
-0.41 4.69 18 RF21 HNC B
1 32 FBC
+0.30 1.12 20 RF19 HNC B
1 33 FBC
-0.29 3.33 14 RF19 HNC B
1 33 FBC
+0.33 1.95 22 RF20 HNC B
1 92 FBC
-0.29 0.77 9
RF24 HNC B
1 92 FBC
+0.22 0.56 15 RF19 HNC C
1 32 FBC
-0.32 1.84 13 RF18 HNC C
1 90 FBC
-0.11 0.87 11 RF18 HNC C
1 91 FBC
-0.08 0.14 13 RF21 HNC C
1 92 FBC
-0.35 0.91 16 RF18 HNC C
1 93 FBC
-0.35 1.60 15 RF18 HNC D
1 29 FBC
-0.32 0.55 11 RF24 HNC D
1 30 FBC
-0.34 0.61 14 RF17 HNC D
1 31 FBC
-0.32 0.82 10 RF24 HNC D
1 31 FBH
-0.39 0.26 6
RF24 HNC D
1 31 FBH 0.41 0.18 8
RF24 HNC D
1 32 FBC
-0.29 1.74 14 RF22 HNC D
1 32 FBH
-0.35 0.18 5
RF22 HNC D
1 32 FBH 0.38 0.18 8
RF24 HNC D
1 33 FBC
-0.29 1.35 18 RF22 HNC D
1 33 FBH
-0.35 0.22 6
RF24 HNC D
1 33 FBH 0.23 0.38 8
RF24 HNC D
1 90 FBC
-0.35 0.51 14 RF22 HNC D
1 90 FBC
+0.30 0.70 13 RF24 HNC D
1 91 FBC
-0.32 0.51 10 RF24 HNC
Attachment to 000685 Page 8 of 27 Table 5. Maintenance Activity Wear at FDBs from PPC D
1 91 FBH
+0.21 0.70 8
RF24 HNC D
1 92 FBC
-0.35 1.72 12 RF24 HNC D
1 92 FBH
-0.29 0.29 6
RF24 HNC D
1 92 FBH
+0.3 0.31 8
RF21 HNC D
1 93 FBC
-0.30 0.53 9
RF24 HNC D
1 94 FBC
+0.24 0.53 7
RF24 HNC Table 6. Maintenance Activity Wear in SG C Row 1 Freespan from PPC Rail SG Row Col Locn Approx.
Elevation, Inch Bobbin Volts Historical Max %TW Outage of Max
%TW RF26 Depth
%TW C
1 4
+15.69 0.18 6
RF24 HNC C
1 6
+15.60 0.91 11 RF24 HNC C
1 7
+15.58 0.44 5
RF24 HNC C
1 8
+15.55 0.42 7
RF24 HNC C
1 9
+15.44 0.82 12 RF19 HNC C
1 10 TSC
+15.49 1.33 14 RF24 HNC C
1 11 TSC
+15.52 0.86 10 RF20 HNC C
1 12 TSC
+15.41 0.94 11 RF11 HNC C
1 13 TSC
+15.50 1.09 13 RF18 HNC C
1 14 TSC
+15.27 1.14 13 RF20 HNC C
1 15 TSC
+15.59 1.21 14 RF24 HNC C
1 16 TSC
+15.51 1.38 15 RF24 HNC C
1 17 TSC
+15.46 1.05 16 RF24 HNC C
1 18 TSC
+15.49 1.52 18 RF24 HNC C
1 19 TSC
+15.37 0.73 12 RF24 HNC C
1 20 TSC
+15.27 0.87 13 RF24 HNC Wear from Foreign Objects/Volumetric Indications Foreign object (FO) wear has been historically observed during Wolf Creek inspections. When the object that caused the wear has been removed or confirmed to be no longer present, the tube can remain in service if the wear is less than the 40% TW plugging limit. There have been FO wear and volumetric indications that remain in service where the FO is no longer present. Since the FO is no longer present, the mechanism that caused the wear has been removed and wear propagation cannot occur. These wear indications are monitored at each SG inspection to confirm that no change has occurred.
During RF26, 25 volumetric indications that are believed to be from foreign objects were detected. Twenty-two (22) of these indications were historical in nature and showed no change from prior inspections. Three (3) of the reported indications were newly reported during RF26. The 3 indications were reported in different SGs and at different TSP elevations. Table 7 provides the flaw sizing parameters for each volumetric indication reported during RF26.
Tube R42-C34 in SG A contained a 49% TW volumetric indication at TSP 3H-0.64 and there was no object (PLP) detected by bobbin, +POINT, or array inspections in the affected tube or surrounding tubes. The +POINT probe
Attachment to 000685 Page 9 of 27 voltage (Vpp) was 0.73-volts. The axial and circumference extents each measured 0.18-inch, however, the array and +POINT probes had stronger circumferential extents than axial extents. Several +POINT sizing techniques were explored to determine the most appropriate technique. The most conservative sizing technique was used and was ETSS 27901.2 for circumferential groove foreign object wear and was measured at 49% TW. History data review from the bobbin coil showed that a very small precursor signal was present in the preceding inspection in RF24, but its size and character would not have resulted in reporting at the time. The tube was removed from service by tube plugging.
Tube R11-C2 in SG B contained a 25% TW volumetric indication at TSP 1H+0.65 as measured using ETSS 21998.1.
The measured axial extent of the flaw was 0.13 inch and a circumferential extent of 0.4 inch with a voltage of 0.28-volts. The array and +POINT probe responses showed the indication to be volumetric and with sized with ETSS 21998.1 for volumetric indications. A PLP signal was associated with the wear indication, which suggested that a foreign object was present. Adjacent tube R11-C3 also contained a PLP signal. No other PLP signals were found in the surrounding tubes. Historical data reviews showed a precursor signal was present at the preceding inspection at RF24 and no precursor signal at the RF22 inspection. Tube R11-C2 was plugged and stabilized. Tube R11-C3 was preventively plugged and stabilized, as well as 7 other surrounding tubes to form a protective plugged tube/stabilizer box surrounding Tubes R11-C2 and R11-C3.
The third tube to contain a newly reported volumetric indication was Tube R35-C106 in SG C. This tube contained a 30% TW indication as measured using ETSS 21998.1. The axial and circumferential extents of the indication were measured at 0.17-inch and 0.18-inch. The flaw voltage was 0.37-volts. A PLP signal was present in the affected tube and no surrounding tubes exhibited any evidence of a PLP by the bobbin, +POINT, or array probes.
A historical data review was performed for the affected tube and there was no precursor signal at the prior RF24 inspection. The affected tube (R35-C106) was plugged and stabilized, and the 8 adjacent tubes were also preventively plugged and stabilized to form a protective plugged tube/stabilizer box.
Table 7. Wolf Creek RF26 TTS Foreign Object Wear/Volumetric Indication Sizing SG Row Col Ind Locn Inch Volts Max Depth Axial Length (inch)
Circ Extent (inch)
Circ Extent (deg)
A 37 104 VOL TSH
+4.64 0.15 16 0.25 0.18 29 A1) 42 34 VOL 3H
-0.64 0.73 49 0.18 0.18 29 A
48 38 VOL TSH
+0.00 0.15 15 0.17 0.16 26 B(1) 11 2
VOL 1H
+0.65 0.28 25 0.13 0.4 66 B
22 40 VOL 3H
-0.74 0.11 12 0.2 0.19 32 B
30 24 VOL TSH
+0.34 0.43 33 0.71 0.28 46 B
45 24 VOL TSC
+0.23 0.17 17 0.2 0.21 35 C
1 87 VOL TSH
+3.36 0.26 24 1.24 0.56 94 C
8 92 VOL TSH
+1.40 0.20 19 0.82 0.56 94 C
12 121 VOL TSH
+0.52 0.09 10 0.17 0.26 43 C
16 5
VOL TSH
+0.29 0.09 9
0.19 0.16 26 C
32 63 VOL TSH
+0.54 0.16 15 0.57 0.33 55 C(1) 35 106 SVI 4C
+0.76 0.37 30 0.17 0.18 31 C
38 19 VOL TSC
+10.08 0.42 33 0.16 0.26 43 C
39 19 VOL TSC
+9.29 0.11 12 0.16 0.18 31 C
40 19 VOL TSC
+8.48 0.10 11 0.19 0.18 29 C
41 101 VOL TSH
+0.29 0.19 19 0.25 0.24 40 C
41 102 VOL TSH
+0.45 0.43 34 0.4 0.17 28 C
42 102 VOL TSH
+0.33 0.21 20 0.27 0.19 32
Attachment to 000685 Page 10 of 27 Table 7. Wolf Creek RF26 TTS Foreign Object Wear/Volumetric Indication Sizing C
43 37 VOL TSH
+0.43 0.34 28 0.78 0.29 48 C
44 26 VOL 6H
+25.94 0.23 21 0.5 0.3 51 C
46 58 VOL TSH
+0.48 0.17 17 0.61 0.18 31 C
56 51 VOL TSH
+0.04 0.16 16 0.28 0.28 46 C
58 50 VOL TSH
+0.05 0.08 8
0.16 0.28 46 D
31 21 VOL TSH
+0.00 0.11 13 0.16 0.24 40 Notes:
(1) Tube was plugged in RF26.
Axial ODSCC at Dents/Dings (new degradation mechanism at RF26)
The inspection programs were conducted during RF26 for the detection of ODSCC at dent and ding locations was based on industry experience of cracking dents and dings in similar plant. The inspection program consisted of
+POINT inspection of all dents/dings that were 5-volts and greater from the bobbin probe, all dents/dings at the hot and cold leg top TSP (7H/7C), and 25% of dents/dings that were 2-5 volts below the top HL/CL TSP and in the U-bend. Additionally, all dents/dings less than 5-volts were inspected with the bobbin and array probes.
From the targeted inspection programs, a single axial indication was found in Tube R55-C46 in SG A at a 3.37-volt bobbin probe dent at the top TSP (TSP 7C). The indication was detected by the 2-5-volt +POINT program at the top TSP. No scope expansion was necessary since 100% of the DNTs/DNGs were inspected with a qualified probe and technique. This is the first occurrence of axial ODSCC at dent/ding locations at Wolf Creek. Axial ODSCC at Dings/Dents was identified in the Degradation Assessment as a potential degradation mechanism because it has been observed at similar plants with A600TT tubing. The NRR steam generator branch staff was notified of this new degradation mechanism during the inspection.
The axial ODSCC indication in Tube R55-C46 was measured a maximum depth of 51.6% TW as measured by ETSS I28432 with a voltage of 0.27-volts. The indication had a total as reported length of 0.24-inch. Table 8 provides the flaw sizing parameters. Line-by-line depth profiling was performed to obtain the structural equivalent depth (SED) and structural equivalent length (SEL) flaw dimensions. The SED and SEL obtained were 45.6% TW and 0.141-inch when using the maximum volts peak-to-peak (Vpp) of the flaw signal entrance and exit angles for each scan line.
Table 8. Axial ODSCC at Dents/Ding Locations at Wolf Creek RFO SG Row Col Volts Ind Locn Inch1 Max Depth
(%TW)
Total Length (inch)
SED
(%TW)
SEL (inch)
RF26 A
55 46 0.27 SAI 7C 0.58 51.6 0.24 45.6(1) 0.141(1)
Notes:
(1) Structural Effective Depth (SED) and Structural Effective Length (SEL) were determined by depth profiling using the maximum voltage per scan line.
Attachment to 000685 Page 11 of 27
- 6.
CONDITION MONITORING ASSESSMENT AND RESULTS, MARGIN TO THE TUBE INTEGRITY PERFORMANCE CRITERIA, AND COMPARISON WITH THE MARGIN PREDICTED TO EXIST AT THE INSPECTION BY THE PREVIOUS FORWARD-LOOKING TUBE INTEGRITY ASSESSMENT Condition monitoring (CM) is the assessment performed on observed indications of tube degradation from the current inspection to confirm that the SG integrity performance criteria limits have not been exceeded for the as-found inspection results. CM is a backward-looking evaluation to ensure that SG integrity had been maintained over the previous inspection interval. The calculation of the CM limits followed the methodology described in the EPRI SG Integrity Assessment Guidelines, Revision 5 (3002020909) and using computational methods from the EPRI SG Degradation Specific Flaw Handbook, Revision 3 (3002005426). The CM limit is determined at three times the normal operation differential pressure (3PNOP), considering the material, nondestructive examination (NDE), and burst pressure relationship uncertainties at 0.95 probability at 50% confidence (95/50). The NDE measured depth then can be compared directly with the CM limit to determine if the performance criteria are satisfied. For volumetric flaws with pressure loading condition only, tube burst and ligament tearing (pop-through) for leakage are coincident. For tube cracking mechanisms, the burst and ligament tearing pressures are calculated based on the specific flaw dimensions and compared to the minimum differential pressure limits for structural integrity (3PNOP) and for leakage integrity (steam line break (SLB) differential pressure of 2560 psi).
The actual SG pressure had been trended daily over the prior operating interval from the last inspection completed in RF24 to the start of RF26. The largest actual tube differential pressure at 3PNOP at steady state full power operations was bound by 3888 psi, neglecting line losses and internal SG pressure drops from the tube bundle to the main steam line pressure instrument location. However, a 3PNOP differential pressure of 4329 psi was used for determining the CM limits which is based on the maximum design operating pressure differential across the tubes, 1443 psi.
The degradation mechanisms that were observed in RF26 that CM assessments were completed are, Mechanical Wear at Anti-Vibration Bar (AVB) Supports Mechanical Wear at Tube Support Plate (TSP) Supports Mechanical Wear from Maintenance Activities Mechanical Wear due to Foreign Objects Outside Diameter Stress Corrosion Cracking (ODSCC) at Dents/Dings (new mechanism at RF26)
Primary Water Stress Corrosion Cracking (PWSCC) at Hot Leg (HL) Tubesheet Bulge and Overexpansion Locations (not found during RF26)
No tubes exhibiting degradation exceeded the structural and leakage integrity performance criteria for condition monitoring. No tubes required in situ pressure testing to support the Condition Monitoring (CM) assessment.
Condition Monitoring has been met based on the RF26 inspection results. All SG structural and leakage NEI 97-06 performance criteria have been satisfied for degradation mechanisms found during RF26. Table 9 presents the CM assessment results for each degradation mechanism with comparisons to the associated CM limit and the existing margin to the limit.
Attachment to 000685 Page 12 of 27 For existing degradations, a comparison of the previous operational assessment (OA) projection was compared to the RF26 results. All prior OA projections were performed for 2-cycles over the Cycle 25 and Cycle 26 operating interval ending at RF26. Table 10 provides the OA projection for RF26 and the actual RF26 as-found condition for each degradation mechanism observed at RF26.
The prior OA projections for wear mechanisms were performed using simplified worst-case degraded tube methodologies. As shown in Table 10, the RF26 as-found condition for each degradation mechanism were bound by the applicable OA projection. Therefore, the OA assumptions, inputs, and methodology for each projection remain valid and conservative.
The OA projections for circumferential ODSCC at tubesheet expansion transitions and for circumferential PWSCC within the tubesheet H* region were performed using fully probabilistic models. These two degradation mechanisms were not detected during RF26.
Axial ODSCC at dents/dings is a new degradation mechanism that was first reported in the RF26 inspection and therefore, there was no prior OA projection for this mechanism. Axial ODSCC at dents/dings was identified as a potential degradation mechanism for RF26 and specific inspection programs were performed to detect for this mechanism using qualified probes and techniques.
Table 9. Wolf Creek RF26 Condition Monitoring Summary Degradation Mechanism Sizing ETSS Sizing Probe CM Model Assumed Axial
- Length, Inch Limiting Flaw Depth Condition Monitoring Limit, %TW Margin to Limit, %TW AVB Wear I96041.1 Bobbin Axial Thinning 0.40 46% TW 63% TW 17% TW TSP Land Wear 96910.1
+POINT Uniform 1.12 27% TW 47% TW 20% TW Maintenance Wear 96004.3 Bobbin Uniform 0.75 22% TW(1) 57% TW 35% TW Foreign Object Wear 21998.1
+POINT Axial Thinning 1.25 34% TW 46% TW 12% TW Foreign Object Wear 27901.2
+POINT Axial Thinning 0.25 49%TW 71% TW 22% TW Axial ODSCC at Dents/Dings I28432
+POINT Axial ODSCC SED/SEL 0.141 (2) 5570 psi, (burst) 5526 psi (ligament tearing) 4329 psi (burst) 2560 psi (ligament tearing) 1241 psi (burst) 2876 psi (ligament tearing)
Axial ODSCC at Dents/Dings I28432
+POINT Axial ODSCC MD/Total Length 0.24 (3) 5318 psi, (burst) 5638 psi (ligament tearing) 4329 psi (burst) 2560 psi (ligament tearing) 989 psi (burst) 3078 psi (ligament tearing)
Notes:
(1) Largest historical wear. Maintenance Wear is a benign mechanism with no active driving mechanism for continued wear.
Monitoring is completed by confirmed no change in flaw signal character.
(2) CM is performed by comparison to burst and ligament pressure using the structural effective depth (SED) and structural effective length (SEL) flaw sizes.
(3) CM is performed by comparison to burst and ligament pressure using the maximum depth (MD) and total length flaw sizes.
Attachment to 000685 Page 13 of 27 Table 10. Comparison of Prior OA Projections to RF26 Inspection Results Existing Degradation Mechanism Prior OA Projected Structural Parameter at RF26 (1)
Limiting RF26 As-Found Measured Structural Parameter Prior OA Projected Bounds RF26 As-Found Condition?
AVB Wear-Existing Flaws 51% TW 46% TW Yes AVB Wear-New Flaws 46% TW 24% TW Yes TSP Wear-Existing Flaws 40% TW 27% TW Yes TSP Wear-New Flaws 30% TW None Found Yes Foreign Object Wear-Existing Flaws 37% TW (2) 33% TW (2)
Yes Wear from Maintenance Activities 18% TW (2)
No Change (3)
Yes Circ. PWSCC within H* Region (4) 95th Depth 95th Length 95th PDA 5% Burst Pressure 99.9% TW 104.9 degree 56.9 PDA 5308 psi None Found N/A Circ. ODSCC at TTS (5) 95th Depth 95th Length 95th PDA 5% Burst Pressure 99.9% TW 196.4 degree 57.7 PDA 6113 psi None Found N/A Notes:
(1) Structural Parameter does not include NDE Measurement Uncertainty.
(2) The mechanism for continued growth has been removed (i.e., foreign objects or maintenance tool). No growth is predicted. Changes in flaw size from inspection to inspection is due to eddy current variability.
(3) Depth sizing of wear from maintenance activities is no longer performed if there is no change in flaw signal character (HNC).
(4) Fully Probabilistic OA performed for 5 undetected flaws for 2 cycles.
(5) Fully Probabilistic OA performed for 4 undetected flaws for 2 cycles.
Attachment to 000685 Page 14 of 27
- 7.
TUBES PLUGGED OR REPAIRED DURING THE INSPECTION OUTAGE.
Table 11 provides a listing of the tubes plugged during the RF26 SG inspection.
Table 11. Listing of Tubes Plugged During RF26 Steam Generator Row Column Degradation Mechanism A
39 87 AVB Wear 43 58 AVB Wear 42 34 Foreign Object Wear 55 46 Axial ODSCC at DNT B
43 99 AVB Wear 55 74 AVB Wear 53 63 AVB Wear 48 60 AVB Wear 46 56 AVB Wear 46 55 AVB Wear 49 53 AVB Wear 44 47 AVB Wear 53 46 AVB Wear 48 45 AVB Wear 49 36 AVB Wear 11 2
Foreign Object Wear 11 3
PLP 11 4
PLP Bound 10 2
PLP Bound 10 3
PLP Bound 10 4
PLP Bound 12 2
PLP Bound 12 3
PLP Bound 12 4
PLP Bound C
50 68 AVB Wear 35 77 AVB Wear 47 91 AVB Wear 35 106 Foreign Object Wear 34 105 PLP Bound 35 105 PLP Bound 36 105 PLP Bound 34 106 PLP Bound 36 106 PLP Bound 34 107 PLP Bound 35 107 PLP Bound 36 107 PLP Bound D
36 71 AVB Wear 36 90 AVB Wear 41 47 AVB Wear 43 44 AVB Wear 44 95 AVB Wear 45 57 AVB Wear 47 42 AVB Wear 52 33 AVB Wear 44 56 AVB Wear
Attachment to 000685 Page 15 of 27
- 8.
THE REPAIR METHODS UTILIZED, AND THE NUMBER OF TUBES REPAIRED BY EACH REPAIR METHOD Not applicable.
- 9.
ANALYSIS
SUMMARY
OF THE TUBE INTEGRITY CONDITIONS PREDICTED TO EXIST AT THE NEXT SCHEDULED INSPECTION An operational assessment (OA) involves projecting the condition of the SG tubes to the time of the next scheduled inspection and determining their acceptability relative to the tube integrity structural and leakage performance criteria of NEI 97-06. All returned to service degradation, undetected degradation, and new degradation that is projected to initiate during the interval between inspections shall be evaluated. An OA is required for all existing degradation mechanisms that were observed during the SG inspection and for existing degradation mechanism observed in prior inspections that were not observed in the current inspection.
Two different Operational Assessment methods were used to project existing degradation mechanisms to the end of the next inspection interval for comparison the tube structural and leakage performance criteria, and these are, Simplified worst-case degraded tube methodology Fully probabilistic methodology The simplified worst-case degraded tube OA methodology involves projecting the largest flaw at the beginning of the inspection interval to the end of the inspection interval by applying a growth rate over the duration of the interval. Specifically, the mixed arithmetic/simplified statistical OA method was used for wear mechanisms. The mixed arithmetic/simplified statistical OA method calculates the end of cycle (EOC) projected flaw depth by adjusting the worst case or largest beginning of cycle (BOC) flaw depth to the NDE corrected size at the 95/50 value and adding the 95th percentile growth allowance over the OA interval. The projected EOC flaw depth is compared to the material structural limit (MSL) that is derived by combining the material property and burst relation uncertainties in the burst equation through Monte Carlo simulations for the 95th percentile EOC flaw length value or a physically bounding value. This approach was used for wear at AVB and broached TSP intersections.
Wear from maintenance activities and historical wear from foreign objects have no mechanism for continued growth. The wear from maintenance activities was caused by a one-time tubesheet pressure pulse cleaning activity that is no longer applied. The objects that had caused the foreign object wear have either been removed or verified to be no longer present. Both of these degradation mechanisms have been monitored for many inspections and have not changed since initial detection. Therefore, OA is performed based on the sizing technique sizing error to account for variabilities in sizing from inspection to inspection and compared to the CM limit.
Fully probabilistic methods were used to perform OA projections for existing cracking mechanisms. A fully probabilistic OA method was also used for AVB wear for a defense-in-depth assessment in addition to the simplified OA projection method. The fully probabilistic OA method considers the entire flaw population for a given degradation mechanism for known flaws, potentially undetected flaws, and flaws that initiated over the next inspection interval. The fully probabilistic method provides a wider range of inputs that includes using distributions of flaws sizes and degradation growth rates, while combining uncertainties for material property, burst relation and NDE measurement. The fully probabilistic method also includes provisions for flaw initiation during the OA interval and flaw detection capabilities provided by site-specific probability of detection distributions. A fully probabilistic OA projection was performed for the following degradation mechanisms.
Circumferential PWSCC within the tubesheet H* zone
Attachment to 000685 Page 16 of 27 Circumferential ODSCC at top of tubesheet expansion transitions AVB Wear o Performed as a defense-in-depth assessment in addition to the simplified worst case degraded tube method.
In accordance with the Technical Specification 5.5.9.d.3 and TSTF-577, the maximum allowable inspection interval is 54 EFPM (3-cycles) following an inspection where no cracking is observed. If cracking is found, the next inspection shall be performed at the next refueling outage (after 1-cycle) or when 100% array full-length probe (enhanced probe) inspection is performed the next inspection can be performed at the second refueling outage (after 2-cycles). The RF26 inspection scope included 100% full-length array and bobbin probe inspections. A single occurrence of axial ODSCC at a dent location was observed. Since the 100% full-length inspection was completed with an enhanced probe technology after finding a crack, a 2-cycle inspection interval is allowed in accordance with the plant Technical Specifications and TSTF-577. Therefore, the OA for each degradation mechanism will be performed for an interval of 2-cycles.
Inputs common to the OA for all degradation mechanisms include, OA interval of 2-cycles with a total duration of 2.9 EFPY. This provides conservatism over the 2.70 estimated duration.
The minimum burst pressure requirement for structural integrity used a 3PNOP of 4329 psi. This provides conservatism over the actual 3PNOP of 3888 psi.
A primary hot leg temperature of 618 was used for cracking degradation mechanisms. This provides conservatism over the actual average hot leg temperature of 616.3.
Based upon the Wolf Creek RF26 inspection results and the subsequent Condition Monitoring and Operational Assessment evaluations, all NEI 97-06 SG structural and leakage performance criteria have been satisfied for the as-found SG condition and is expected to continue to be satisfied for an additional two cycles of operation until the next planned SG inspection during RF28. Table 12 provides the results of the OA projections with margins to the OA limits for degradation mechanisms evaluated using simplified methods. Table 13 provides the results of the OA projections with margins to the OA limits for degradation mechanisms evaluated using fully probabilistic techniques.
Degradation mechanism specific assumptions, inputs, and results used in the OA projections are summarized below.
AVB Wear Simplified OA The OA performed for AVB wear is based on indications left in service and for postulated undetected indications, and flaw growth rate. A site-specific growth rate was determined and used for existing flaws that had growth data for 2 consecutive inspections (i.e., paired growth). A separate growth rate was determined and used for undetected flaws that was based on growth data from newly detected flaws assuming growth from zero and applying the NDE sizing regression to the new flaw size when calculating the growth rate. The largest 95th percentile growth rate of the most limiting SG over the last 4 inspections was used in the OA projection. A growth rate of 4.0% TW/EFPY was used for existing wear indications and a growth rate of 8.23% TW/EFPY was used for undetected flaws.
The largest existing wear indication left in service at the start of the OA interval was 39% TW. The largest assumed undetected flaw was taken as the 95th percentile value from the site-specific AVB wear probability of detection (POD) curve and was 25% TW.
For existing AVB wear, the flaw size at RF28 was projected to be 59.3% TW and for postulated undetected indications the RF28 flaw size was projected to be 48.9% TW. Both results satisfy the OA limit of 67% TW. Table 12 provides the OA projection results with margins to the limit for AVB Wear.
Attachment to 000685 Page 17 of 27 Broached TSP Wear OA The OA performed for TSP broached wear is based on indications left in service and for postulated undetected indications, and flaw growth rate. A site-specific growth rate was determined and used for existing flaws that had growth data for 2 consecutive inspections (i.e., paired growth). With only 13 growth data points for available for existing wear indications with 2 consecutive inspections, a log-normal curve fit to extrapolate the data to obtain the 95th percentile value using Benards median rank estimation as described in the EPRI SG Integrity Assessment Guidelines. The 95th percentile growth rate used for the existing wear OA was 4.0% TW/EFPY, which bounds the maximum observed growth rate of 2.5% TW/EFPY and bounds all growth rate data obtained over the last 3 inspections. A separate growth rate was determined and used for undetected flaws that was based on growth data from newly detected flaws assuming growth from zero and applying the NDE sizing regression to the new flaw size when calculating the growth rate. Over the last 3 inspections there was only 1 new TSP wear indication.
Using the growth from zero method with application of the NDE sizing regression to the new flaw size when calculating the growth rate, the maximum growth rate for undetected flaws was determined to be 5.6% TW/EFPY.
The largest existing wear indication left in service at the start of the OA interval was 27% TW. The largest assumed undetected flaw was taken as the 95th percentile value from the site-specific TSP broached wear probability of detection (POD) curve and was 22% TW.
For existing AVB wear, the flaw size at RF28 was projected to be 53.8% TW and for postulated undetected indications the RF28 flaw size was projected to be 38.2% TW. Both results satisfy the OA limit of 57% TW.
Table 12 provides the OA projection results with margins to the limit for TSP broached Wear.
Wear from Maintenance Activities and Existing Foreign Object Wear Wear from maintenance activities and historical wear from foreign objects have no mechanism for continued growth. The wear from maintenance activities was caused by a one-time tubesheet pressure pulse cleaning activity that is no longer applied. The objects that had caused the foreign object wear to have either been removed or verified to be no longer present. Both of these degradation mechanisms have been monitored for many inspections and have not changed since initial detection. Therefore, OA is performed is based on the sizing technique sizing error to account for variabilities in sizing from inspection to inspection and compared to the CM limit. The results are provided in Table 12.
Circumferential PWSCC Within the Tubesheet H* Zone The OA projections for circumferential PWSCC within the tubesheet H* zone were performed using the fully probabilistic method to determine the probability of burst (POB) and probability accident leakage (POL).
Additionally, the projected lower 5th percentile tube burst pressure and the projected tube leakage at accident conditions at the 95th percentile probability were also determined. The fully probabilistic OA analysis evaluates 2 populations of PWSCC indications, 1) flaws that were not detected in the current inspection and 2) flaws that initiate during the next inspection interval.
The undetected flaw depth distribution was generated using simulations of depth and the site-specific array probe depth POD curve for this degradation mechanism. The 95th percentile from this this curve is 81% TW.
The circumferential length distribution for undetected flaws was developed from the distribution of all circumferential PWSCC indications reported in plants with A600TT SG tubing. The circumferential flaw extents were adjusted by the NDE measurement regression.
The undetected flaw PDA distribution was generated within the Westinghouse fully probabilistic code that relates flaw maximum depth and length to a PDA value. The correlation of depth and length to PDA was based on pulled tube data with destructive examination results.
Since Wolf Creek had reported only 3 circumferential PWSCC flaws, a site-specific growth rate cannot be reliably
Attachment to 000685 Page 18 of 27 determined. Consequently, the EPRI typical default growth rates provided in the EPRI SG Integrity Assessment Guidelines (3002020909) will be used for maximum depth, length, and PDA. The default growth rates used were normalized to the Wolf Creek operating hot leg temperature of 618 using the Arrhenius temperature correction equation.
The number of undetected flaws assumed to be present at the beginning of the inspection interval and flaws that initiate over the OA interval were determined through a Weibull failure analysis using circumferential PWSCC data of A600TT plants. The OA assessment conservatively assumes that all 3 undetected indications were contained in the same SG. The developed Weibull curve is also used to determine the number of flaws that may initiate over the next 2-cycle inspection interval. As a sensitivity assessment a 2-cycle OA projection was also performed for 5 undetected flaws.
Table 13 provides the results for the fully probabilistic 2-cycle OA projections for circumferential PWSCC within the tubesheet H* region for the cases of 3 undetected flaws and 5 undetected flaws. Both projection results satisfy all structural and leakage performance criteria as shown in the table.
Circumferential ODSCC at Tubesheet Expansion Transitions The OA projections for circumferential ODSCC at the top of tubesheet expansion transition region were performed using the fully probabilistic method to determine the probability of burst (POB) and probability accident leakage (POL). Additionally, the projected lower 5th percentile tube burst pressure and the projected tube leakage at accident conditions at the 95th percentile probability were also determined. The fully probabilistic OA analysis evaluates 2 populations of ODSCC indications, 1) flaws that were not detected in the current inspection and 2) flaws that initiate during the next inspection interval.
The undetected flaw depth distribution was generated using simulations of depth and the site-specific array probe depth POD curve for this degradation mechanism. The 95th percentile from this this curve is 82% TW.
The circumferential length distribution for undetected flaws was developed from the distribution of all circumferential ODSCC indications reported in plants with A600TT SG tubing. The circumferential flaw extents were adjusted by the NDE measurement regression.
The undetected flaw PDA distribution was generated within the Westinghouse fully probabilistic code that relates flaw maximum depth and length to a PDA value. The correlation of depth and length to PDA was based on pulled tube data with destructive examination results.
Since Wolf Creek had reported only 1 circumferential ODSCC flaw, a site-specific growth rate cannot be reliably determined. Consequently, the EPRI typical default growth rates provided in the EPRI SG Integrity Assessment Guidelines (3002020909) will be used for maximum depth, length, and PDA. The default growth rates used were normalized to the Wolf Creek operating hot leg temperature of 618 using the Arrhenius temperature correction equation.
The number of undetected flaws assumed to be present at the beginning of the inspection interval and flaws that initiate over the OA interval were determined through a Weibull failure analysis using circumferential ODSCC data of A600TT plants. The OA assessment conservatively assumes that all 3 undetected indications were contained in the same SG. The developed Weibull curve is also used to determine the number of flaws that may initiate over the next 2-cycle inspection interval. As a sensitivity assessment a 2-cycle OA projection was also performed for 5 undetected flaws.
Table 13 provides the results for the fully probabilistic 2-cycle OA projections for circumferential ODSCC at top of tubesheet expansion transition region for the cases of 3 undetected flaws and 5 undetected flaws. Both projection results satisfy all structural and leakage performance criteria as shown in the table.
AVB Wear Fully Probabilistic OA
Attachment to 000685 Page 19 of 27 As a defense-in-depth measure, a fully probabilistic analysis will be used for a 2-cycle OA for AVB wear specific to SG D, in addition to the OA performed using the simplified OA method. The fully probabilistic model evaluated 3 populations of AVB wear indications. These are detected flaws that remain in service, flaws that were undetected at RF26, and flaws that initiate over the inspection interval. SG D is the limiting SG for having the most indications and largest indications that were returned to service. A site-specific bobbin coil POD curve was used to determine the depth distribution of undetected AVB wear. The length of the flaws returned to service and flaws that were undetected, were assumed to be the largest the AVB engagement of 0.4-inch. The length of flaws initiated during the inspection are grown from 0 using a growth rate prorated to achieve 0.4-inch over the 2-cycle inspection interval.
The fully probabilistic OA model uses 2 depth growth rate distributions: one for the known flaws that were returned to service (RTS) and one for used for flaws that were either undetected or initiated over the inspection interval. The limiting depth growth distribution for the known returned to service flaws was in SG C and developed over the RF21-RF22 inspection interval. The 95th percentile of this growth distribution is 4.0%
TW/EFPY. The limiting depth growth distribution for newly reported flaws was found in SG A and developed over the RF22-RF24 inspection interval. The 95th percentile of the depth growth distribution for newly reported flaws is 8.23% TW/EFPY.
The number of undetected flaws assumed to be present at the beginning of the OA interval (BOC) and flaws that initiate over the OA interval were determined through trending of AVB wear data using a Weibull failure function.
Wolf Creek AVB wear data from RF11 (2000) through RF26 (2024) was used. The AVB wear POD curve was used to determine the number of undetected indications given the number of indications detected through probabilistic simulations. This resulted in a prediction of 81 undetected AVB wear indications at RF26. The derived Weibull function is also used to determine the number of wear indications that will be initiated over the next inspection interval.
The 2-cycle fully probabilistic OA projection for SG D resulted in 1170 RTS and 81 undetected AVB wear indications at the start of the OA interval, with an additional 110 indications that were initiated over the 2-cycle inspection interval. This resulted in 1361 indications that were evaluated by the OA model for structural and leakage integrity. The results of the fully probabilistic analysis for AVB wear are provide in Table 13. The projection results for AVB wear satisfies all structural and leakage performance criteria as shown in the table.
Axial ODSCC at Dents/Dings The OA projections for axial ODSCC at dent/ding locations were performed using the fully probabilistic method to determine the probability of burst (POB) and probability accident leakage (POL). Additionally, the projected lower 5th percentile tube burst pressure and the projected tube leakage at accident conditions at the 95th percentile probability were also determined. The fully probabilistic OA analysis evaluates 2 populations of ODSCC indications, 1) flaws that were not detected in the current inspection and 2) flaws that initiate during the next inspection interval.
The detection of flaws for this degradation mechanism is accomplished by 3 different inspection techniques, dependent on the location and size of the dents and dings. The +POINT probe was used for detection of dents/dings 5-volts using ETSS 22041.1. The bobbin probe was used for detections of freespan dings <5-volts using ETSS 24013.1 and for dents at TSPs <5-volts using ETSS 10013.1. Since there are 3 detection techniques for detecting axial ODSCC at dent/ding locations, the OA can be performed by either using 3 subpopulations or by using the most conservative site-specific POD curve for all populations. For simplicity and conservativism, the most conservative POD curve was used for this OA. The 95th percentile from the limiting bobbin coil ETSS 10013.1 POD is 96.5% TW and was used to determine the undetected flaw depth distribution using simulations of depth and POD.
Attachment to 000685 Page 20 of 27 The axial length distribution for undetected flaws was developed using the ETSS 24013.1 data set flaws used for the technique qualification with prototypical ding cracks supplemented with ding cracks from a first-generation SG and ding cracks from other A600TT plants. The flaw lengths were adjusted by a NDE sizing regression developed by Westinghouse in a ding sizing study.
Since Wolf Creek had reported only 1 axial ODSCC dent/ding flaw, a site-specific growth rate cannot be determined. Consequently, the EPRI typical default growth rates provided in the EPRI SG Integrity Assessment Guidelines (3002020909) will be used for maximum depth and length. The default growth rates used were normalized to the Wolf Creek operating hot leg temperature of 618 using the Arrhenius temperature correction equation.
The number of undetected flaws assumed to be present at the beginning the inspection interval and flaws that initiate over the OA interval are typically determined through a Weibull failure analysis for the degradation mechanism. However, with only a single flaw reported at Wolf Creek, a Weibull failure analysis cannot be performed, Additionally, the industry database for axial ODSCC at dents/dings is not conducive to accurate assessment of flaw initiations due to limited historical inspection scopes and historical data reviews showing flaws being present for several cycles. A conservative approach was taken to use the Weibull flaw initiation rate for circumferential ODSCC at expansions transitions that had many more initiations within the industry than for axial ODSCC dent/ding cracks. This Weibull initiation resulted 3 undetected flaws were assumed for the OA model for axial ODSCC at dents/dings and for flaw initiation over the OA interval. As a sensitivity assessment a 2-cycle OA projection was also performed for 5 undetected flaws.
Table 13 provides the results for the fully probabilistic 2-cycle OA projections for axial ODSCC at dent/ding locations for the cases of 3 undetected flaws and 5 undetected flaws. Both projection results satisfy all structural and leakage performance criteria as shown in the table.
Cumulative Effect of Fully Probabilistic Analyses When fully probabilistic methods are used for OA, the accident induced leakage probabilities (POL) must be combined. Additionally, for POL assessments, the total cumulative leakage is to be determined for all mechanisms. The POL for each mechanism is combined to establish the total leakage probability for comparison to the accident induced leakage performance criterion (AILPC) requirement (i.e., <5%). The product of the individual survival probabilities is used to satisfy the structural integrity and leakage integrity performance criteria. Additionally, the predicted leakage at SLB conditions from all sources are summed and compared to the allowable SLB leak rate of 1.0 gpm.
The degradation mechanisms that used fully probabilistic OA evaluations were:
Mechanical Wear from AVB supports.
Circumferential PWSCC within the tubesheet H* region Circumferential ODSCC at tubesheet expansion transitions.
Axial ODSCC at dent/ding locations.
There are no other leakage sources expected over the next inspection interval.
The combined POL and SLB leak rate for all fully probabilistic analyses is 1.262% and 0.046 gpm when 3 undetected flaws are assumed for the PWSCC and ODSCC mechanisms. This satisfies the performance criterion for POL (5%) and SLB leak rate (1 gpm)
The combined POL and SLB leak rate for all fully probabilistic analyses is 2.069% and 0.099 gpm when 5 undetected flaws are assumed for the PWSCC and ODSCC mechanisms. This satisfies the performance criterion for POL (5%) and SLB leak rate (1 gpm).
Attachment to 000685 Page 21 of 27 Table 12. Wolf Creek Cycle 27-Cycle 28 Simplistic OA Projection Summary Mechanism Inspection Interval EFPY RF28 EOC Depth Projection,
%TW (1)
Material Structural Limit (2),
%TW Margin to
- Limit,
%TW AVB Wear, Existing 2-Cycle 2.9 59.3 67 7.7 AVB Wear, Undetected 2-Cycle 2.9 48.9 67 18.1 TSP Wear, Existing 2-Cycle 2.9 53.8 57 3.2 TSP Wear, Undetected 2-Cycle 2.9 38.2 57 18.8 FO Wear/Volumetric, Existing 2-Cycle 2.9 40.3(3) 46(5) 5.7 Maintenance Wear 2-Cycle 2.9 25.1(4) 57(5) 31.9 Notes:
(1) NDE adjusted depth.
(2) Structural Limit with material property and burst relation uncertainties calculated through Monte Carlo simulations.
(3) The existing FO Wear/Volumetric indications have no associated object present and therefore, have no mechanism for continued growth. The OA projection is based on the sizing technique sizing error. The EOC projection is the NDE size and is compared to the CM Limit.
(4) Wear caused by one time maintenance activity. The existing flaws have no mechanism for continued growth. OA projection is based on the sizing technique sizing error. The EOC projection is the NDE size and is compared to the CM Limit.
(5) CM Limit.
Attachment to 000685 Page 22 of 27 Table 13. Wolf Creek Cycle 27-Cycle 28 Fully Probabilistic OA Projection Summary Mechanism
- Flaws Inspection Interval EFPY RF28 POB Projection RF28 POL Projection RF28 Burst Projection RF28 Leak Rate Projection Margin to POB Limit Margin to POL Limit Margin to Burst
- Limit, psi Margin to Leak rate
- Limit, gpm Circ PWSCC in H* Zone 3(1) 2-Cycle 2.9 0.562 0.124 5583 0.018 4.438 4.876 1254 1.0 5(1) 2-Cycle 2.9 0.918 0.183 5284 0.025 4.082 4.817 955 1.0 Circ ODSCC TTS 3(1) 2-Cycle 2.9 0.287 0.609 6354 0.028 4.713 4.391 2025 1.0 5(1) 2-Cycle 2.9 0.504 0.996 6090 0.072 4.496 4.004 1761 0.9 Axial ODSCC at Dents/Dings 3(1) 2-Cycle 2.9 2.214 0.534 4804 2.3x10-6 2.786 4.466 475 1.0 5(1) 2-Cycle 2.9 3.784 0.902 4493 0.019 1.216 4.098 164 1.0 AVB Wear (2) 2-Cycle 2.9 0.303 0
4999 0
4.697 5.000 670 1.0 Limit 5
5 4329
<1.0 Notes:
(1) Number of undetected flaws at the beginning of the OA interval.
(2) At the beginning of the OA interval there were 1170 returned service flaws and 81 undetected flaws.
Attachment to 000685 Page 23 of 27
- 10. NUMBER AND PERCENTAGE OF TUBES PLUGGED OR REPAIRED TO DATE, AND THE EFFECTIVE PLUGGING PERCENTAGE IN EACH SG The number and percentage of tubes plugged and total cumulative tubes plugged are provided in Table 14.
Table 14. RF26 Tube Plugging Summary Steam Generator Total Number of Tubes Plugged Total Percentage Plugged A
73*
1.30%
B 109 1.94%
C 51 0.91%
D 184 3.27%
TOTAL 417 1.85%
- An additional 3 plugs are installed in SG A cold leg only, due to tubesheet drilling errors during manufacturing. By design, no tubes are installed in those locations.
- 11. SG SECONDARY-SIDE INSPECTION RESULTS Foreign object search and retrieval (FOSAR) was performed in all Steam Generators following sludge lancing. Visual inspections were performed in the annulus region between the tubes and the wrapper, the tube lane, and in-bundle tubes to a depth of 3 to 5 tubes inward from the periphery and tube lane.
In-bundle inspections were performed on selected tubes for the post sludge cleanliness inspections on each steam generator and targeted in-bundle inspections in Steam Generator B.
The foreign objects identified were small bristle wires, gasket material, gasket graphite filling, machine turnings, hard scale, and sludge rocks. For each item listed in the following table, diagnostic eddy current testing was performed on affected and surrounding tubes. No tube degradation was observed during the secondary side visual inspections. The items remaining within the steam generators were evaluated and dispositioned for continued operation.
Visual inspection was performed of upper steam drum components in Steam Generator B. There were no degradation or anomalies found during the general upper steam drum inspection.
Ultrasonic Testing inspections were performed on nineteen (19) J-nozzles and eighteen (18) locations on the Feedwater ring in Steam Generator B. All measurements were above the minimum thickness acceptance criteria.
Visual inspections of the three backing rings associated with welds within the feedring in Steam Generator B were performed. The inspection results were acceptable; however, some erosion was present. This area will continue to be monitored in the future in accordance with visual inspection plans.
Attachment to 000685 Page 24 of 27 Note. Green shading indicates the that foreign object had been retrieved from the SG.
Foreign Objects Found by FOSAR during RF26 ID SG Description Elevation Leg Row Col Length Height Width Diameter Fixity Metallic?
Retrieved?
Legacy A001 A
Gasket Material TTS-AN HL 3
1 0.325 0.125 0.01 Loose Yes Yes No A002 A
Wire Bristle TTS-IB HL 15 67 0.25 0.0325 Fixed Yes No Yes A003 A
Metal Strip TTS-IB HL 16 67 0.75 0.02 0.1 Fixed Yes No Yes B001 B
Machine Turning TTS-AN HL 36 14 2.25 0.0625 Loose Yes Yes No B002 B
Wire Bristle TTS-IB HL 12 60 1.25 0.03 Fixed Yes No Yes B003 B
Gasket Material TTS-IB HL 15 60 0.292 0.01 0.125 Fixed Yes No No B004 B
Wire Bristle TTS-IB HL 17 56 0.5 0.01 Fixed Yes No No B005 B
Graphite TTS-IB HL 10 55 0.3 0.01 0.125 Loose No No No B006 B
Graphite TTS-IB CL 12 52 0.215 0.01 0.01 Loose No No No B007 B
Graphite TTS-IB CL 34 47 0.6875 0.01 0.2 Loose No Yes No B008 B
Weld Slag TTS-IB CL 38 62 0.188 0.05 0.05 Fixed Yes No No B009 B
Scale TTS-AN CL 19 119 0.5 0.01 0.2 Loose No No No B010 B
Wire Bristle TTS-AN CL 51 92 0.6875 0.01 Loose Yes Yes No B011 B
Machine Turning TTS-AN HL 12 122 0.6 0.02 Loose Yes Yes No B012 B
Sludge Rock TTS-AN HL 59 57 0.3 0.2 0.1 Wedged Yes Yes No B013 B
Graphite SD-Lower Deck 0.75 0.188 0.03 Loose No Yes No C001 C
Wire Bristle TTS-AN CL 60 73 0.25 0.01 Loose Yes Yes No C002 C
Wire Bristle TTS-AN HL 59 70 0.375 0.01 Loose Yes No No C003 C
Wire Bristle TTS-IB CL 6
63 0.25 0.003 Fixed Yes No Yes C004 C
Graphite TTS-TL TL 102 0.188 0.01 0.05 Loose No Yes No D001 D
Wire Bristle TTS-AN HL 10 1
0.625 0.01 Loose Yes Yes No D002 D
Wire Bristle TTS-AN CL 58 49 0.6875 0.01 Loose Yes Yes No D003 D
Wire Bristle TTS-AN HL 8
121 1
0.01 Loose Yes Yes No D004 D
Wire Bristle TTS-IB HL 13 60 0.5 0.05 Fixed Yes No No
Attachment to 000685 Page 25 of 27
- 12. THE SCOPE, METHOD, AND RESULTS OF SECONDARY-SIDE CLEANING PERFORMED IN EACH SG Sludge lancing was performed in each steam generator.
Summary of RF26 Sludge Lance Deposit Removal SG A (lbs)
SG B (lbs)
SG C (lbs)
SG D (lbs)
Total Deposit Removal (lbs)
Sludge Lancing 59.25 24.25 32.25 33.75 149.5 Secondary side deposits are monitored with visual inspections, sludge/deposit chemistry analysis, scale profiling, monitoring of wide range water levels, and mass balance evaluations of feedwater iron transfer. The most recent full bundle cleaning was performed by using Advanced Scale Conditioning Agents in all steam generators during RF21 in 2016. The current conditions indicate there are no concerns with secondary side deposits affecting tube integrity or operational performance.
- 13. THE RESULTS OF PRIMARY SIDE COMPONENT VISUAL INSPECTIONS PERFORMED IN EACH SG The channel heads in all four SGs were inspected. An area of channel head wastage due to a cladding breach was initially reported in SG A during RF19 and was determined to be acceptable for continued operation. Ultrasonic testing performed during RF19, RF20, and RF24 resulted in no change of this indication. Visual inspection of the channel head weld anomaly during RF26 showed similar conditions as previous inspections. Review of operating parameters resulted in no concerns of accelerated growth.
Therefore, the indication has remained within analyzed conditions.
All tube plugs were inspected and found to be in acceptable condition, based on visual inspection and comparison to known visual standards.
- 14. THE PRIMARY TO SECONDARY LEAKAGE RATE OBSERVED IN EACH SG DURING THE CYCLE PRECEDING THE INSPECTION WHICH IS THE INSPECTION WHICH IS THE SUBJECT OF THE REPORT No leakage rate was observed in any of the SGs.
- 15. THE CALCULATED ACCIDENT INDUCED LEAKAGE RATE FROM THE PORTION OF THE TUBES BELOW 15.21 INCHES FROM THE TOP OF THE TUBESHEET FOR THE MOST LIMITING ACCIDENT IN THE MOST LIMITING SG. IN ADDITION, IF THE CALCULATED ACCIDENT INDUCED LEAKAGE RATE FROM THE MOST LIMITING ACCIDENT IS LESS THAN 2.50 TIMES THE MAXIMUM OPERATIONAL PRIMARY TO SECONDARY LEAKAGE RATE, THE REPORT SHOULD DESCRIBE HOW IT WAS DETERMINED For implementation of the H* alternate repair criteria (ARC), a leakage assessment must be completed during the condition monitoring and operational assessments.
For the condition monitoring (CM) assessment, the component of operational leakage from the prior cycle from below the H* distance will be multiplied by a factor of 2.50 and added to the total accident leakage from any other source and compared to the allowable accident induced leakage limit. No operating leakage was observed during cycle 25 or cycle 26 operations or during plant shutdowns. All tubes with reported degradation during RF26 satisfied the structural and leakage performance criteria with leakage potential.
Therefore, the H* leakage assessment for CM is acceptable and satisfied.
Attachment to 000685 Page 26 of 27 For the operational assessment (OA), the difference in the leakage between the allowable accident induced leakage and the accident induced leakage from sources other than the tubesheet expansion region will be divided by 2.50 and compared to the observed operational leakage. An administrative limit will be established to not exceed the calculated value. The fully probabilistic OA projections performed for the existing cracking degradation mechanisms and for AVB wear resulted in SLB leakage potential for the next 2-cycle inspection interval. The maximum total SLB leakage from the fully probabilistic analyses was 0.099 gpm with the 5 undetected flaw assumption for the existing cracking mechanisms. SLB leakage of this magnitude is not sufficient to establish an administrative operational leakage when adjusted by the 2.50 leak rate factor.
Therefore, the H* leakage assessment for OA is acceptable and satisfied.
- 16. THE RESULTS OF MONITORING FOR TUBE AXIAL DISPLACEMENT (SLIPPAGE). IF SLIPPAGE IS DISCOVERED, THE IMPLICATIONS OF THE DISCOVERY AND CORRECTIVE ACTION SHALL BE PROVIDED The tube slippage monitoring within the tubesheet was performed of all collected bobbin data. No evidence of tube slippage was detected.
Attachment to 000685 Page 27 of 27 The key below provides a description of the abbreviations used in the Enclosures.
COL Column PER Percent LOCN Location INCH1 Distance from Location
- H, #C
(# = Support Plant Number) Hot Leg or Cold Leg Side AV#
Anti-Vibration Bar (# = intersection number, counted from HL)
TSH Top of Tube Sheet Hot Leg TSC Top of Tube Sheet Cold Leg FBC Flow Baffle Cold Leg FBH Flow Baffle Hot Leg HNC History No Change
Enclosure I to 000685 AVB Wear Indications 20% - Steam Generator A (10 pages)
SG - A >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 42 22 PCT 21.69 AV5 -.21l l l l 45 25 PCT 21.66 AV4 -.10l l 45 25 PCT 27 1.00 AV3 -.16l l 45 25 PCT 33 1.56 AV2 -.24l l 45 25 PCT 33 1.51 AV5 -.21l l l l 45 26 PCT 31 1.44 AV4 -.16l l 45 26 PCT 27 1.14 AV3 -.21l l 45 26 PCT 20.66 AV5.16l l l l 44 28 PCT 26 1.02 AV5.18l l l l 45 30 PCT 27 1.39 AV3.63l l l l 41 31 PCT 25 1.04 AV2.10l l l l 41 32 PCT 30 1.50 AV3 -.18l l l l 45 32 PCT 25 1.03 AV3 -.13l l 45 32 PCT 36 2.34 AV4 -.26l l 45 32 PCT 20.73 AV2 -.21l l 45 32 PCT 28 1.32 AV5 -.23l l l l 47 32 PCT 37 2.52 AV3 -.31l l 47 32 PCT 27 1.20 AV4 -.21l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
1 ST Max
SG - A >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l l l 45 33 PCT 32 1.59 AV4.18l l l l 45 34 PCT 32 1.76 AV4.18l l l l 50 34 PCT 23.88 AV2 -.19l l l l 48 35 PCT 37 2.13 AV3.21l l 48 35 PCT 29 1.30 AV2.15l l 48 35 PCT 21.73 AV4 -.18l l l l 38 37 PCT 23.67 AV5 -.21l l l l 45 37 PCT 30 1.31 AV3.23l l l l 48 37 PCT 33 1.66 AV3 -.18l l l l 43 38 PCT 21.79 AV4 -.15l l 43 38 PCT 39 2.84 AV3.23l l 43 38 PCT 30 1.55 AV5 -.32l l l l 45 38 PCT 28 1.27 AV4 -.15l l 45 38 PCT 39 2.88 AV3.18l l l l 39 39 PCT 24.87 AV5.18l l 39 39 PCT 26 1.05 AV3 -.16l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
2 ST Max
SG - A >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 39 39 PCT 31 1.42 AV6 -.16l l 39 39 PCT 36 2.05 AV4.18l l l l 44 39 PCT 24.90 AV3 -.21l l 44 39 PCT 30 1.37 AV4.13l l 44 39 PCT 34 1.79 AV2.18l l 44 39 PCT 25.96 AV5 -.21l l l l 45 40 PCT 35 2.09 AV4 -.18l l l l 27 41 PCT 21.57 AV5.15l l l l 28 41 PCT 21.60 AV2 -.03l l l l 38 41 PCT 20.56 AV4 -.18l l 38 41 PCT 28 1.02 AV3 -.13l l l l 45 41 PCT 34 1.78 AV3 -.26l l 45 41 PCT 20.63 AV2 -.18l l 45 41 PCT 39 2.44 AV5.21l l 45 41 PCT 27 1.07 AV4 -.28l l l l 26 42 PCT 26.98 AV5.00l l 26 42 PCT 25.95 AV2.13l l l l 36 42 PCT 38 2.32 AV5.21l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
3 ST Max
SG - A >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 36 42 PCT 22.73 AV4.00l l l l 40 42 PCT 24.85 AV4.05l l 40 42 PCT 21.66 AV5 -.18l l l l 30 44 PCT 26 1.02 AV5.00l l l l 41 44 PCT 25.94 AV3.00l l 41 44 PCT 21.66 AV2.00l l l l 43 44 PCT 20.62 AV3 -.15l l 43 44 PCT 21.67 AV5.10l l l l 28 45 PCT 20.72 AV5.00l l l l 36 45 PCT 24 1.03 AV3 -.13l l 36 45 PCT 25 1.11 AV4.00l l 36 45 PCT 26 1.22 AV5 -.08l l l l 39 45 PCT 24 1.02 AV5 -.08l l 39 45 PCT 35 2.26 AV4.21l l l l 44 45 PCT 27.95 AV4.21l l 44 45 PCT 25.79 AV5.13l l 44 45 PCT 24.76 AV3 -.23l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
4 ST Max
SG - A >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 28 46 PCT 34 1.79 AV5.00l l l l 30 46 PCT 20.64 AV2 -.18l l l l 37 46 PCT 38 2.23 AV4.00l l l l 43 46 PCT 20.63 AV6.34l l 43 46 PCT 33 1.63 AV4 -.21l l l l 44 46 PCT 30 1.36 AV4.00l l 44 46 PCT 31 1.50 AV2.18l l 44 46 PCT 34 1.80 AV3.00l l 44 46 PCT 24.89 AV5.16l l l l 50 46 PCT 37 2.12 AV3.00l l 50 46 PCT 27 1.12 AV4 -.18l l l l 34 47 PCT 20.71 AV5 -.05l l l l 37 47 PCT 29 1.53 AV4 -.05l l l l 38 48 PCT 26.97 AV2 -.21l l 38 48 PCT 24.87 AV3.00l l l l 40 52 PCT 24.86 AV5.00l l 40 52 PCT 26 1.04 AV6.00l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
5 ST Max
SG - A >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 40 52 PCT 37 2.04 AV4.00l l 40 52 PCT 22.77 AV2.00l l l l 33 53 PCT 20.76 AV3 -.05l l l l 42 54 PCT 32 1.54 AV5.00l l l l 38 55 PCT 27 1.26 AV4 -.03l l 38 55 PCT 24 1.02 AV3.00l l l l 44 56 PCT 26 1.04 AV3.00l l l l 41 58 PCT 22.74 AV2.00l l l l 43 58 PCT 30 1.35 AV2.00l l 43 58 PCT 35 1.87 AV3.00l l 43 58 PCT 42 2.91 AV4.00l l 43 58 PCT 42 2.81 AV5.00l l l l 46 58 PCT 21.67 AV2.00l l l l 41 59 PCT 21.79 AV3.00l l l l 43 59 PCT 31 1.70 AV2.00l l l l 44 59 PCT 24 1.05 AV2.00l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
6 ST Max
SG - A >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 44 59 PCT 33 1.96 AV3.00l l l l 44 60 PCT 22.69 AV3.16l l l l 42 61 PCT 30 1.55 AV2.21l l l l 42 68 PCT 32 1.50 AV3 -.22l l 42 68 PCT 20.59 AV2.16l l l l 40 70 PCT 29 1.22 AV3 -.18l l 40 70 PCT 24.86 AV4 -.08l l l l 50 70 PCT 29 1.20 AV2 -.23l l l l 41 72 PCT 22.71 AV5.14l l l l 37 74 PCT 31 1.30 AV5.15l l 37 74 PCT 33 1.53 AV4.26l l 37 74 PCT 35 1.71 AV3.49l l l l 44 75 PCT 23.76 AV5 -.03l l 44 75 PCT 32 1.50 AV4.28l l 44 75 PCT 20.59 AV3 -.05l l l l 39 76 PCT 27.92 AV2 -.18l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
7 ST Max
SG - A >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 44 77 PCT 24.85 AV5.13l l 44 77 PCT 23.74 AV4 -.23l l l l 34 78 PCT 21.59 AV5 -.16l l l l 39 79 PCT 23.74 AV4.00l l l l 46 81 PCT 38 2.54 AV5.26l l 46 81 PCT 21.66 AV3 -.10l l l l 39 82 PCT 23.87 AV4 -.13l l l l 39 84 PCT 35 1.73 AV3.00l l 39 84 PCT 33 1.59 AV2.18l l 39 84 PCT 20.61 AV4.00l l 39 84 PCT 22.72 AV5.00l l l l 39 85 PCT 21.72 AV5.00l l 39 85 PCT 33 1.84 AV4 -.21l l 39 85 PCT 32 1.60 AV3.00l l l l 46 86 PCT 39 2.33 AV3.18l l 46 86 PCT 31 1.36 AV2.20l l l l 37 87 PCT 22.76 AV2.13l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
8 ST Max
SG - A >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 39 87 PCT 40 2.97 AV4 -.23l l l l 50 87 PCT 20.67 AV5.00l l l l 39 88 PCT 29 1.18 AV2.15l l 39 88 PCT 37 2.06 AV4.00l l l l 38 89 PCT 25.99 AV5.00l l l l 30 90 PCT 23.78 AV5.00l l l l 50 90 PCT 34 1.68 AV5 -.05l l l l 35 91 PCT 21.68 AV4.15l l l l 36 91 PCT 29 1.34 AV4 -.18l l 36 91 PCT 30 1.39 AV6.19l l l l 26 92 PCT 20.72 AV5 -.16l l l l 39 93 PCT 30 1.43 AV3.00l l l l 39 95 PCT 23.84 AV4.15l l l l 39 96 PCT 20.59 AV3.00l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
9 ST Max
SG - A >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 38 98 PCT 22.72 AV4 -.05l l l l 38 99 PCT 23.88 AV4 -.18l l l l 40 102 PCT 23.77 AV3.00l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
Tubes: 88 Records: 152 10 ST Max
Enclosure II to 000685 AVB Wear Indications 20% - Steam Generator B (20 pages)
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 27 8 PCT 29 1.22 AV2.00l l 27 8 PCT 24.79 AV5.00l l l l 27 9 PCT 20.65 AV5 1.95l l l l 29 9 PCT 24.80 AV5 -1.20l l l l 30 10 PCT 23.87 AV5.08l l l l 32 12 PCT 22.76 AV5.00l l l l 33 12 PCT 26 1.09 AV5.26l l l l 45 22 PCT 28 1.11 AV5 -.23l l 45 22 PCT 35 1.79 AV6 -.21l l l l 44 23 PCT 25 1.02 AV4 -.18l l l l 46 24 PCT 20.61 AV5.13l l l l 46 25 PCT 25.96 AV3.13l l 46 25 PCT 21.70 AV6.10l l 46 25 PCT 32 1.67 AV5 -.18l l 46 25 PCT 35 1.95 AV4.18l l l l 49 28 PCT 21.67 AV6.00l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
1 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 49 28 PCT 32 1.50 AV5.13l l l l 49 29 PCT 22.76 AV3.15l l l l 49 31 PCT 31 1.42 AV5.21l l l l 45 33 PCT 25.91 AV3.15l l l l 44 34 PCT 23.73 AV5 -.15l l 44 34 PCT 23.78 AV3 -.25l l l l 36 35 PCT 20.63 AV4.13l l l l 53 35 PCT 32 1.51 AV4.16l l 53 35 PCT 34 1.83 AV5.19l l l l 42 36 PCT 24.79 AV2.18l l l l 49 36 PCT 21.67 AV3.13l l 49 36 PCT 26.92 AV5 -.16l l 49 36 PCT 41 2.65 AV4.22l l l l 36 37 PCT 22.77 AV4.10l l l l 42 39 PCT 22.76 AV4 -.20l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
2 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 42 40 PCT 21.64 AV3 -.25l l 42 40 PCT 23.77 AV2 -.13l l l l 45 40 PCT 23.76 AV2 -.13l l l l 34 41 PCT 21.67 AV2.18l l l l 42 41 PCT 21.69 AV4 -.15l l 42 41 PCT 37 2.19 AV5.31l l l l 46 41 PCT 24.86 AV2.16l l l l 48 41 PCT 21.69 AV3.18l l l l 39 42 PCT 28 1.10 AV4.15l l l l 47 42 PCT 29 1.17 AV2.15l l l l 37 43 PCT 23.78 AV3.13l l l l 47 43 PCT 20.65 AV2.16l l 47 43 PCT 20.65 AV3 -.21l l l l 49 43 PCT 22.75 AV3.13l l 49 43 PCT 25.91 AV2.18l l 49 43 PCT 20.65 AV4.16l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
3 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l l l 44 44 PCT 21.63 AV3 -.13l l l l 44 45 PCT 20.61 AV5 -.18l l 44 45 PCT 23.83 AV4.50l l l l 48 45 PCT 25.91 AV6 -.23l l 48 45 PCT 24.85 AV5.16l l 48 45 PCT 41 2.87 AV4 -.20l l l l 52 45 PCT 29 1.24 AV2 -.15l l 52 45 PCT 32 1.60 AV3.16l l 52 45 PCT 29 1.22 AV4.18l l l l 34 46 PCT 31 1.37 AV4.15l l l l 40 46 PCT 21.65 AV3.15l l l l 46 46 PCT 21.65 AV5.21l l l l 47 46 PCT 24.81 AV2 -.25l l l l 48 46 PCT 26.94 AV5.19l l l l 53 46 PCT 22.70 AV2 -.17l l 53 46 PCT 31 1.33 AV4 -.16l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
4 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 53 46 PCT 40 2.39 AV5.18l l 53 46 PCT 22.68 AV6 -.13l l l l 38 47 PCT 20.67 AV3 -.15l l l l 42 47 PCT 21.69 AV4.13l l l l 44 47 PCT 41 2.97 AV4 -.23l l l l 34 48 PCT 20.62 AV3.28l l l l 48 48 PCT 25.93 AV3.21l l 48 48 PCT 27 1.12 AV5.13l l 48 48 PCT 36 2.06 AV4.37l l l l 50 48 PCT 23.83 AV2 -.15l l 50 48 PCT 25.98 AV5 -.15l l l l 30 49 PCT 26 1.06 AV6.65l l 30 49 PCT 30 1.40 AV5.18l l 30 49 PCT 26 1.06 AV2 -.25l l l l 39 49 PCT 23.82 AV4.13l l l l 44 49 PCT 26 1.00 AV3.10l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
5 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 52 49 PCT 26 1.05 AV3.13l l 52 49 PCT 33 1.70 AV2 -.21l l l l 45 50 PCT 20.66 AV4.13l l 45 50 PCT 23.84 AV5 -.20l l 45 50 PCT 26 1.00 AV3 -.15l l l l 44 51 PCT 21.71 AV2 -.13l l 44 51 PCT 24.90 AV4 -.15l l 44 51 PCT 24.86 AV3 -.18l l l l 46 51 PCT 25.97 AV2.26l l l l 52 51 PCT 36 2.14 AV1 -.38l l 52 51 PCT 25.99 AV2.21l l l l 25 52 PCT 25.97 AV6.23l l 25 52 PCT 26 1.06 AV5 -.17l l 25 52 PCT 22.77 AV2.20l l l l 40 52 PCT 30 1.36 AV5 -.20l l 40 52 PCT 21.72 AV4 -.15l l l l 44 53 PCT 20.67 AV3.21l l 44 53 PCT 33 1.65 AV2 -.18l l 44 53 PCT 24.88 AV4.18l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
6 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l l l 46 53 PCT 34 1.83 AV3.18l l l l 49 53 PCT 31 1.48 AV5.19l l 49 53 PCT 41 2.87 AV4.24l l l l 41 54 PCT 32 1.59 AV2 -.18l l l l 46 54 PCT 28 1.22 AV5.13l l l l 47 54 PCT 22.75 AV4 -.10l l 47 54 PCT 33 1.75 AV2.16l l l l 51 54 PCT 23.81 AV5.13l l 51 54 PCT 20.67 AV4.19l l l l 54 54 PCT 27 1.11 AV4 -.13l l 54 54 PCT 27 1.08 AV3.18l l l l 43 55 PCT 27 1.14 AV3 -.20l l 43 55 PCT 28 1.23 AV2 -.20l l 43 55 PCT 31 1.51 AV4 -.28l l l l 45 55 PCT 22.75 AV2 -.15l l l l 46 55 PCT 43 3.25 AV5.21l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
7 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l l l 51 55 PCT 37 2.19 AV5.16l l 51 55 PCT 34 1.84 AV6 -.16l l l l 37 56 PCT 20.62 AV2 -.20l l 37 56 PCT 26 1.01 AV3 -.25l l l l 42 56 PCT 21.71 AV5.13l l l l 44 56 PCT 22.79 AV5 -.18l l l l 45 56 PCT 22.74 AV3 -.15l l l l 46 56 PCT 41 2.89 AV5.05l l l l 44 57 PCT 27.97 AV5.13l l l l 45 57 PCT 20.56 AV4 -.15l l l l 52 57 PCT 23.87 AV3 -.13l l 52 57 PCT 25 1.04 AV2 -.22l l l l 53 57 PCT 34 1.92 AV2.16l l 53 57 PCT 23.85 AV4 -.10l l 53 57 PCT 39 2.68 AV3 -.26l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
8 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 36 58 PCT 23.65 AV3.16l l 36 58 PCT 27.93 AV2.33l l l l 41 58 PCT 20.54 AV3 -.13l l l l 43 58 PCT 37 1.88 AV3 -.28l l 43 58 PCT 39 2.13 AV4 -.28l l l l 46 58 PCT 26 1.22 AV4 -.21l l l l 47 59 PCT 37 2.33 AV4.24l l l l 48 59 PCT 22.78 AV4.16l l l l 50 59 PCT 31 1.54 AV1.42l l 50 59 PCT 37 2.27 AV2 -.24l l 50 59 PCT 32 1.64 AV5.19l l 50 59 PCT 20.68 AV6 -.26l l 50 59 PCT 22.85 AV3.16l l 50 59 PCT 28 1.27 AV4 -.18l l l l 51 59 PCT 21.72 AV5.16l l l l 40 60 PCT 27.94 AV3 -.20l l 40 60 PCT 21.59 AV2 -.21l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
9 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 42 60 PCT 21.56 AV2.18l l l l 44 60 PCT 21.85 AV3.00l l l l 46 60 PCT 20.77 AV6 -.70l l 46 60 PCT 34 1.85 AV5.00l l l l 48 60 PCT 28 1.36 AV4 -.16l l 48 60 PCT 41 2.68 AV5.22l l l l 36 61 PCT 20.59 AV2.18l l 36 61 PCT 20.57 AV3 -.15l l l l 39 61 PCT 31 1.32 AV3.10l l l l 48 61 PCT 30 1.46 AV5.16l l 48 61 PCT 29 1.34 AV4.19l l l l 50 61 PCT 34 1.98 AV3 -.18l l l l 52 61 PCT 32 1.70 AV2 -.19l l l l 34 62 PCT 22.61 AV4 -.13l l l l 38 62 PCT 23.71 AV4 -.18l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
10 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 40 62 PCT 29 1.06 AV5 -.18l l l l 41 62 PCT 20.55 AV2.13l l 41 62 PCT 20.51 AV3 -.13l l l l 42 62 PCT 39 2.11 AV5 -.21l l l l 46 62 PCT 35 2.04 AV6 -.21l l 46 62 PCT 22.93 AV5.11l l 46 62 PCT 38 2.30 AV3 -.26l l l l 49 62 PCT 38 2.35 AV2 -.24l l l l 37 63 PCT 33 1.50 AV4 -.15l l l l 38 63 PCT 24.82 AV3 -.20l l l l 41 63 PCT 25.88 AV3 -.18l l 41 63 PCT 20.58 AV5 -.13l l l l 43 63 PCT 35 1.99 AV3.00l l l l 45 63 PCT 28 1.34 AV6.00l l 45 63 PCT 23.98 AV2.00l l 45 63 PCT 27 1.26 AV3.00l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
11 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 46 63 PCT 22.89 AV5.00l l l l 48 63 PCT 32 1.68 AV3.00l l l l 49 63 PCT 35 2.12 AV3 -.24l l l l 50 63 PCT 35 2.00 AV3.00l l 50 63 PCT 31 1.59 AV2 -.22l l 50 63 PCT 33 1.80 AV1.39l l l l 53 63 PCT 31 1.56 AV2 -.19l l 53 63 PCT 44 3.65 AV3 -.03l l l l 37 64 PCT 39 2.14 AV4 -.23l l 37 64 PCT 28.97 AV5 -.18l l l l 42 64 PCT 21.60 AV3.16l l l l 43 64 PCT 22.95 AV4.16l l l l 44 64 PCT 20.67 AV5.19l l 44 64 PCT 22.79 AV4.14l l l l 46 64 PCT 21.78 AV3.13l l 46 64 PCT 29 1.35 AV4.16l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
12 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 47 64 PCT 34 1.87 AV3.19l l l l 49 64 PCT 36 2.09 AV4.21l l 49 64 PCT 33 1.80 AV3.26l l 49 64 PCT 21.86 AV5.19l l l l 37 65 PCT 23.73 AV5 -.13l l l l 38 65 PCT 20.57 AV4.13l l l l 47 66 PCT 31 1.60 AV2.00l l 47 66 PCT 22.94 AV3.00l l 47 66 PCT 23 1.00 AV4.00l l l l 38 67 PCT 22.69 AV4 -.18l l l l 41 67 PCT 22.68 AV3.11l l l l 46 67 PCT 21.84 AV6 -.19l l l l 39 68 PCT 20.53 AV3 -.10l l l l 42 68 PCT 21.57 AV3 -.18l l l l 50 68 PCT 34 1.87 AV3 -.21l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
13 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 37 69 PCT 26.89 AV4 -.15l l l l 45 69 PCT 35 2.05 AV4.32l l 45 69 PCT 24 1.08 AV5.00l l l l 49 70 PCT 21.88 AV3.19l l 49 70 PCT 23.98 AV2 -.16l l l l 41 71 PCT 21.64 AV2 -.21l l l l 49 71 PCT 29 1.39 AV3.19l l l l 37 72 PCT 33 1.41 AV3 -.18l l 37 72 PCT 33 1.43 AV5 -.18l l l l 40 72 PCT 22.61 AV2 -.18l l 40 72 PCT 23.68 AV5.13l l l l 44 72 PCT 21.89 AV5.11l l l l 40 73 PCT 23.75 AV5 -.18l l l l 44 73 PCT 20.78 AV2 -.22l l 44 73 PCT 34 1.91 AV4.19l l 44 73 PCT 20.82 AV5 -.10l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
14 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 49 73 PCT 33 1.76 AV4 -.21l l l l 51 73 PCT 20.81 AV1 -.25l l l l 39 74 PCT 27.91 AV4.10l l l l 50 74 PCT 34 1.91 AV1.18l l 50 74 PCT 31 1.64 AV5.16l l 50 74 PCT 22.91 AV2.13l l l l 51 74 PCT 21.86 AV5.14l l l l 55 74 PCT 23.73 AV6 -.16l l 55 74 PCT 41 2.62 AV5.21l l 55 74 PCT 34 1.57 AV4.21l l l l 46 75 PCT 38 2.57 AV2.32l l 46 75 PCT 30 1.46 AV4.00l l 46 75 PCT 22.81 AV3 -.18l l l l 50 75 PCT 30 1.50 AV4 -.20l l 50 75 PCT 20.69 AV3.00l l l l 51 75 PCT 28 1.27 AV2.13l l l l 53 75 PCT 29 1.42 AV6.00l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
15 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 53 75 PCT 29 1.35 AV5.00l l l l 52 76 PCT 20.57 AV5 -.15l l l l 44 77 PCT 20.69 AV3.13l l l l 52 78 PCT 22.68 AV5 -.15l l l l 45 80 PCT 20.55 AV3.16l l 45 80 PCT 21.61 AV5 -.18l l 45 80 PCT 31 1.34 AV4 -.18l l l l 49 80 PCT 24.80 AV3 -.21l l l l 36 81 PCT 23.73 AV5.10l l l l 44 81 PCT 21.77 AV2.00l l l l 47 81 PCT 27 1.22 AV3.16l l 47 81 PCT 28 1.25 AV4.16l l l l 37 82 PCT 21.69 AV3.00l l l l 39 85 PCT 21.63 AV5 -.13l l l l 45 85 PCT 22.80 AV4.13l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
16 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 45 85 PCT 20.68 AV5.16l l l l 50 85 PCT 26 1.11 AV5 -.13l l 50 85 PCT 22.81 AV3 -.13l l l l 51 85 PCT 36 2.29 AV4.00l l 51 85 PCT 22.85 AV5.00l l 51 85 PCT 26 1.09 AV3.00l l l l 44 86 PCT 20.54 AV5.13l l l l 50 86 PCT 28 1.04 AV3.16l l l l 44 87 PCT 22.83 AV5.00l l l l 50 88 PCT 20.77 AV3 -.08l l l l 52 89 PCT 27 1.27 AV5.00l l l l 50 90 PCT 26 1.23 AV4 -.03l l l l 53 90 PCT 20.77 AV6.00l l l l 46 94 PCT 28 1.35 AV3 -.05l l 46 94 PCT 20.74 AV4.03l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
17 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 49 94 PCT 22.87 AV5 -.08l l l l 48 95 PCT 20.62 AV5.13l l 48 95 PCT 25.91 AV6 -.16l l 48 95 PCT 22.75 AV4 -.15l l l l 49 95 PCT 31 1.48 AV5.16l l l l 45 96 PCT 22.92 AV3.20l l 45 96 PCT 23.97 AV4.03l l l l 47 96 PCT 29 1.45 AV4 -.15l l 47 96 PCT 29 1.47 AV5.16l l l l 48 96 PCT 37 2.55 AV6.15l l l l 49 96 PCT 25 1.13 AV6.07l l l l 47 97 PCT 35 1.85 AV4.13l l 47 97 PCT 35 1.83 AV5.24l l l l 41 98 PCT 20.65 AV5.00l l l l 45 98 PCT 32 1.78 AV5.00l l l l 46 98 PCT 28 1.43 AV5.36l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
18 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 46 98 PCT 31 1.77 AV4 -.03l l l l 48 98 PCT 28 1.42 AV5.42l l 48 98 PCT 35 2.27 AV6.16l l l l 43 99 PCT 41 3.04 AV5.37l l l l 45 99 PCT 22.76 AV3 -.13l l l l 43 100 PCT 31 1.66 AV5.26l l 43 100 PCT 36 2.34 AV3 -.23l l l l 42 101 PCT 26 1.10 AV6.11l l l l 43 101 PCT 21.74 AV6.07l l l l 41 102 PCT 20.67 AV4 -.03l l l l 41 104 PCT 28 1.25 AV5.00l l 41 104 PCT 36 2.11 AV6.00l l l l 38 105 PCT 21.78 AV3.08l l 38 105 PCT 24.98 AV6.00l l l l 41 105 PCT 20.70 AV6 -.21l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
19 ST Max
SG - B >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 36 109 PCT 22.83 AV4.00l l l l 33 110 PCT 21.70 AV5 -.05l l l l 36 110 PCT 21.72 AV6.00l l l l 26 115 PCT 22.76 AV2.00l l l l 26 116 PCT 24 1.02 AV5.11l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
Tubes: 197 Records: 307 20 ST Max
Enclosure III to 000685 AVB Wear Indications 20% - Steam Generator C (11 pages)
SG - C >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 33 14 PCT 22.74 AV6.15l l l l 34 14 PCT 21.94 AV4.39l l l l 35 14 PCT 29 1.27 AV3.00l l 35 14 PCT 30 1.38 AV4 -.18l l l l 35 15 PCT 38 2.40 AV2.00l l l l 37 15 PCT 23.81 AV2.00l l 37 15 PCT 35 2.02 AV4 -.20l l l l 38 20 PCT 24 1.17 AV2 -.08l l 38 20 PCT 21.96 AV4.44l l l l 39 21 PCT 20.65 AV3.00l l l l 40 22 PCT 22.99 AV2.29l l l l 42 22 PCT 36 2.66 AV4.03l l l l 39 27 PCT 21.72 AV5.13l l 39 27 PCT 26 1.03 AV4 -.08l l l l 39 30 PCT 30 1.37 AV5.00l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
1 ST Max
SG - C >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 44 33 PCT 32 2.04 AV4.00l l 44 33 PCT 22.72 AV5.00l l l l 50 36 PCT 28 1.48 AV3 -.21l l l l 27 37 PCT 22.81 AV6.25l l l l 37 37 PCT 22.76 AV3 -.15l l l l 28 39 PCT 22 1.05 AV6.17l l 28 39 PCT 28 1.67 AV2.18l l 28 39 PCT 21.97 AV1 -.62l l l l 45 39 PCT 35 2.01 AV2 -.23l l 45 39 PCT 26 1.07 AV3.00l l l l 34 40 PCT 20.85 AV2 -.26l l l l 42 40 PCT 22 1.02 AV5.30l l 42 40 PCT 25 1.24 AV3.30l l 42 40 PCT 21.95 AV1.24l l 42 40 PCT 31 1.90 AV4.06l l l l 51 40 PCT 22.73 AV6 -.16l l 51 40 PCT 23.80 AV5.13l l 51 40 PCT 38 2.37 AV4 -.18l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
2 ST Max
SG - C >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l l l 34 41 PCT 23 1.04 AV3 -.18l l l l 40 41 PCT 23 1.04 AV3.13l l 40 41 PCT 29 1.62 AV4.19l l 40 41 PCT 27 1.38 AV5.13l l l l 42 43 PCT 26 1.33 AV2 -.23l l 42 43 PCT 24 1.13 AV3 -.23l l l l 39 45 PCT 34 2.36 AV4 -.20l l 39 45 PCT 20.81 AV3.16l l 39 45 PCT 27 1.46 AV5.20l l l l 31 48 PCT 24.90 AV2 -.23l l 31 48 PCT 39 2.58 AV5.20l l 31 48 PCT 31 1.52 AV6 -.24l l l l 35 48 PCT 21.66 AV5.08l l l l 45 48 PCT 38 2.37 AV5.10l l 45 48 PCT 27 1.13 AV4.13l l l l 39 50 PCT 30 1.90 AV6.19l l l l 49 50 PCT 21.98 AV4.19l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
3 ST Max
SG - C >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 49 50 PCT 20.92 AV6 -.11l l l l 29 52 PCT 21.92 AV2 -.18l l 29 52 PCT 21.89 AV5 -.18l l l l 38 54 PCT 23.77 AV5.00l l 38 54 PCT 26.96 AV2.21l l 38 54 PCT 32 1.46 AV3.00l l 38 54 PCT 31 1.37 AV4.00l l 38 54 PCT 24.85 AV2 -.29l l l l 29 55 PCT 24.89 AV2.13l l l l 45 55 PCT 21.98 AV3.13l l 45 55 PCT 23 1.12 AV5 -.18l l 45 55 PCT 22 1.06 AV4.16l l l l 51 56 PCT 22 1.02 AV5 -.21l l 51 56 PCT 26 1.42 AV4 -.13l l l l 26 57 PCT 22.78 AV5.10l l l l 37 58 PCT 25.88 AV5.00l l 37 58 PCT 26.99 AV2 -.08l l l l 33 59 PCT 27 1.55 AV2.13l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
4 ST Max
SG - C >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l l l 44 59 PCT 20.68 AV4 -.15l l 44 59 PCT 22.79 AV5 -.18l l l l 46 59 PCT 22.97 AV2.00l l l l 34 60 PCT 26.95 AV3.19l l 34 60 PCT 24.86 AV2 -.24l l l l 49 60 PCT 22.72 AV6 -.19l l l l 50 60 PCT 22.75 AV2.16l l l l 52 60 PCT 31 1.43 AV2 -.21l l l l 41 61 PCT 24 1.20 AV3 -.05l l l l 50 63 PCT 35 2.49 AV3.03l l 50 63 PCT 38 2.90 AV2.03l l 50 63 PCT 33 2.12 AV4.19l l l l 45 64 PCT 22.74 AV2 -.16l l 45 64 PCT 30 1.33 AV3.19l l l l 47 64 PCT 39 2.49 AV2 -.21l l 47 64 PCT 24.87 AV3.13l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
5 ST Max
SG - C >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 47 64 PCT 29 1.25 AV1 -.18l l l l 50 64 PCT 32 1.53 AV2.18l l 50 64 PCT 20.64 AV4 -.21l l 50 64 PCT 36 2.01 AV3 -.42l l l l 45 65 PCT 34 2.24 AV2.34l l 45 65 PCT 26 1.33 AV4.16l l 45 65 PCT 32 1.92 AV3.18l l l l 35 66 PCT 33 1.66 AV4 -.18l l l l 50 66 PCT 27 1.13 AV2.13l l l l 45 67 PCT 31 1.87 AV4 -.23l l l l 44 68 PCT 29 1.23 AV1 -.19l l 44 68 PCT 25.91 AV4 -.16l l 44 68 PCT 30 1.32 AV4.60l l 44 68 PCT 25.94 AV2 -.19l l 44 68 PCT 31 1.44 AV5.24l l 44 68 PCT 36 2.00 AV6 -.19l l 44 68 PCT 26 1.02 AV3.13l l l l 47 68 PCT 20.61 AV2 -.16l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
6 ST Max
SG - C >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 50 68 PCT 26 1.00 AV6.10l l 50 68 PCT 38 2.36 AV1 -.21l l 50 68 PCT 41 2.91 AV2 -.24l l 50 68 PCT 38 2.37 AV3.19l l 50 68 PCT 30 1.38 AV4 -.67l l l l 50 69 PCT 28 1.50 AV2.16l l 50 69 PCT 23 1.00 AV3 -.15l l l l 44 70 PCT 25.91 AV4 -.15l l l l 45 71 PCT 22.91 AV3.16l l l l 33 73 PCT 20.60 AV2.39l l l l 43 75 PCT 27 1.53 AV2 -.03l l 43 75 PCT 22 1.04 AV4 -.05l l 43 75 PCT 31 2.04 AV6.23l l 43 75 PCT 23 1.16 AV3 -.33l l l l 51 76 PCT 27 1.48 AV3.16l l 51 76 PCT 22 1.00 AV4.13l l l l 35 77 PCT 23.78 AV6 -.49l l 35 77 PCT 46 3.76 AV2 -.37l l 35 77 PCT 22.72 AV3.19l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
7 ST Max
SG - C >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l l l 35 78 PCT 22.69 AV5 -.19l l 35 78 PCT 29 1.24 AV4 -.20l l 35 78 PCT 29 1.20 AV3.17l l l l 28 81 PCT 21.63 AV5 -.13l l l l 36 81 PCT 23.81 AV2.13l l 36 81 PCT 20.60 AV3 -.13l l 36 81 PCT 22.75 AV6 -.19l l 36 81 PCT 22.73 AV4 -.13l l l l 33 84 PCT 20.58 AV4 -.15l l 33 84 PCT 22.73 AV5 -.13l l l l 40 84 PCT 27 1.12 AV2.30l l l l 36 85 PCT 33 1.78 AV4 -.23l l 36 85 PCT 25.97 AV2.13l l l l 38 85 PCT 20.68 AV5.14l l l l 35 86 PCT 21.96 AV5 -.13l l 35 86 PCT 22.99 AV2 -.22l l l l 43 87 PCT 26 1.38 AV5.00l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
8 ST Max
SG - C >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 43 87 PCT 27 1.43 AV3.13l l l l 39 88 PCT 38 3.08 AV6.18l l 39 88 PCT 21.93 AV5.00l l l l 38 89 PCT 24.91 AV6.05l l l l 45 91 PCT 20.83 AV4.03l l 45 91 PCT 38 3.08 AV6 -.22l l l l 47 91 PCT 41 3.94 AV6 -.16l l l l 30 92 PCT 32 1.58 AV2.16l l 30 92 PCT 29 1.26 AV5 -.21l l 30 92 PCT 25.93 AV6 -.16l l l l 38 92 PCT 28 1.17 AV3.13l l l l 46 92 PCT 35 1.97 AV3.00l l l l 45 93 PCT 24 1.21 AV4 -.05l l l l 39 94 PCT 28 1.66 AV4.00l l l l 48 94 PCT 25.96 AV3.00l l 48 94 PCT 26 1.01 AV5.00l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
9 ST Max
SG - C >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 48 94 PCT 27 1.10 AV4.00l l l l 48 95 PCT 24 1.20 AV4 -.08l l l l 44 96 PCT 24.87 AV4.19l l 44 96 PCT 28 1.19 AV3 -.16l l l l 48 96 PCT 28 1.20 AV5.00l l l l 40 97 PCT 20.62 AV3 -.16l l l l 34 98 PCT 23.82 AV4.11l l l l 48 98 PCT 24 1.14 AV3.00l l 48 98 PCT 22 1.01 AV6 -.08l l l l 40 99 PCT 29 1.30 AV5.22l l l l 44 100 PCT 32 1.54 AV2.00l l l l 30 105 PCT 21.69 AV5.17l l l l 32 107 PCT 22.74 AV6 -.11l l l l 38 107 PCT 20.66 AV6 -.16l l 38 107 PCT 24.90 AV5 -.16l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
10 ST Max
SG - C >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 38 107 PCT 27 1.16 AV4 -.18l l 38 107 PCT 35 2.00 AV3.21l l l l 37 108 PCT 23 1.09 AV5 -.18l l l l 34 109 PCT 20.60 AV4 -.26l l l l 35 109 PCT 30 1.84 AV5.19l l 35 109 PCT 33 2.23 AV4 -.26l l l l 28 113 PCT 20.60 AV5 -.21l l l l 28 114 PCT 23.81 AV6 -.19l l 28 114 PCT 27 1.09 AV2 -1.15l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
Tubes: 97 Records: 178 11 ST Max
Enclosure IV to 000685 AVB Wear Indications 20% - Steam Generator D (19 pages)
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 29 10 PCT 25.90 AV5.33l l l l 30 10 PCT 30 1.78 AV5.23l l l l 33 11 PCT 30 1.36 AV6 -.17l l 33 11 PCT 23.75 AV5.03l l l l 32 14 PCT 36 2.66 AV4 -.26l l l l 33 14 PCT 23.78 AV4 -.23l l l l 35 14 PCT 22.92 AV5.18l l l l 36 15 PCT 21.64 AV5.23l l l l 36 16 PCT 24.88 AV4.18l l l l 37 16 PCT 21.78 AV4.13l l 37 16 PCT 31 1.55 AV6 -.18l l 37 16 PCT 28 1.27 AV3.18l l l l 38 16 PCT 31 1.44 AV3.15l l 38 16 PCT 39 2.48 AV4.18l l 38 16 PCT 21.65 AV6 -.21l l l l 35 17 PCT 34 2.31 AV3.13l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
1 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 35 17 PCT 34 2.31 AV2.18l l l l 37 17 PCT 39 2.05 AV4 -.21l l 37 17 PCT 25.70 AV3.15l l 37 17 PCT 26.80 AV5 -.19l l l l 38 17 PCT 26.97 AV6 -.18l l l l 37 18 PCT 25 1.05 AV3 -.20l l l l 41 18 PCT 22.85 AV1.13l l 41 18 PCT 20.70 AV5 -.18l l 41 18 PCT 20.69 AV6.10l l 41 18 PCT 21.75 AV3.10l l l l 37 19 PCT 28 1.31 AV3.18l l l l 38 19 PCT 32 1.55 AV3.20l l l l 39 19 PCT 23.89 AV3.15l l 39 19 PCT 34 1.97 AV2 -.23l l l l 40 19 PCT 21.65 AV4.13l l l l 40 20 PCT 20.64 AV4 -.18l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
2 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 41 21 PCT 21.74 AV6 -.13l l 41 21 PCT 23.92 AV5 -.15l l l l 38 22 PCT 20.59 AV4.13l l 38 22 PCT 25.89 AV2 -.18l l l l 41 22 PCT 30 1.47 AV5.18l l 41 22 PCT 33 1.88 AV3.15l l 41 22 PCT 22.84 AV2.10l l l l 35 23 PCT 21.67 AV3.10l l l l 40 23 PCT 25.93 AV5 -.18l l l l 39 24 PCT 25 1.05 AV4 -.18l l 39 24 PCT 23.90 AV2 -.20l l l l 42 24 PCT 27 1.42 AV2 -.20l l 42 24 PCT 24 1.18 AV4 -.17l l l l 39 25 PCT 22.82 AV3 -.15l l l l 41 25 PCT 20.67 AV5 -.15l l 41 25 PCT 37 2.36 AV3.23l l l l 44 25 PCT 35 1.89 AV4 -.20l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
3 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 44 25 PCT 35 1.90 AV3 -.21l l l l 47 25 PCT 29 1.55 AV4 -.18l l l l 37 26 PCT 20.67 AV2.10l l l l 47 26 PCT 32 1.87 AV6 -.18l l l l 41 27 PCT 21.76 AV4 -.13l l 41 27 PCT 26 1.11 AV2 -.18l l l l 43 27 PCT 33 1.60 AV3 -.18l l l l 47 27 PCT 29.97 AV6.17l l 47 27 PCT 22.56 AV5 -.16l l l l 45 28 PCT 27.86 AV6 -.18l l 45 28 PCT 21.51 AV1 -.16l l 45 28 PCT 35 1.56 AV2 -.18l l 45 28 PCT 28.91 AV5.28l l l l 46 28 PCT 20.64 AV6 -.16l l l l 47 28 PCT 36 1.71 AV5.13l l 47 28 PCT 28.93 AV6 -.16l l 47 28 PCT 30 1.12 AV3.21l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
4 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 47 28 PCT 29.99 AV2 -.18l l l l 48 28 PCT 31 1.75 AV5.18l l l l 46 29 PCT 20.77 AV5 -.18l l l l 42 30 PCT 25 1.24 AV5 -.18l l 42 30 PCT 21.93 AV3.18l l l l 43 30 PCT 28.93 AV5 -.17l l 43 30 PCT 23.62 AV2.12l l l l 49 31 PCT 25.70 AV6 -.12l l l l 41 32 PCT 26 1.12 AV4 -.16l l l l 47 32 PCT 39 2.05 AV5.19l l 47 32 PCT 27.87 AV4 -.16l l l l 50 32 PCT 23.96 AV5.13l l 50 32 PCT 34 2.12 AV2.16l l 50 32 PCT 24 1.09 AV1 -.17l l 50 32 PCT 23.95 AV3 -.05l l 50 32 PCT 29 1.54 AV4.18l l l l 37 33 PCT 20.67 AV3.00l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
5 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l l l 47 33 PCT 27.86 AV4 -.10l l 47 33 PCT 25.70 AV2.18l l l l 48 33 PCT 20.75 AV3.15l l l l 52 33 PCT 42 3.36 AV6.00l l l l 45 34 PCT 29 1.01 AV3.18l l l l 43 36 PCT 28 1.29 AV2 -.24l l l l 47 36 PCT 26.81 AV4 -.05l l 47 36 PCT 21.54 AV5 -.18l l l l 51 36 PCT 27.89 AV5 -.13l l l l 41 37 PCT 20.73 AV4.16l l 41 37 PCT 22.86 AV3.09l l l l 49 37 PCT 24.69 AV3 -.15l l 49 37 PCT 23.62 AV4 -.19l l l l 51 37 PCT 21.53 AV2.16l l l l 42 38 PCT 25.94 AV5.16l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
6 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 42 38 PCT 29 1.25 AV4 -.20l l l l 46 38 PCT 24 1.08 AV3.18l l 46 38 PCT 27 1.30 AV4.16l l 46 38 PCT 25 1.12 AV5 -.18l l l l 49 38 PCT 27.84 AV3 -.21l l 49 38 PCT 38 2.02 AV4 -.21l l 49 38 PCT 30 1.09 AV5.13l l l l 51 38 PCT 37 1.77 AV5 -.23l l 51 38 PCT 34 1.45 AV4.16l l l l 46 39 PCT 37 1.84 AV5 -.23l l 46 39 PCT 36 1.71 AV4.40l l l l 49 39 PCT 28.91 AV2 -.18l l 49 39 PCT 36 1.72 AV3 -.45l l l l 38 40 PCT 29 1.18 AV2 -.65l l l l 42 41 PCT 29 1.22 AV3 -.25l l 42 41 PCT 30 1.35 AV5.26l l 42 41 PCT 20.60 AV4 -.13l l l l 37 42 PCT 20.76 AV4.39l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
7 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l l l 47 42 PCT 40 2.97 AV4 -.24l l 47 42 PCT 40 3.09 AV5.21l l l l 43 43 PCT 26 1.10 AV2.18l l l l 45 43 PCT 25.89 AV3 -.18l l 45 43 PCT 39 2.47 AV4 -.30l l 45 43 PCT 37 2.14 AV5.23l l 45 43 PCT 24.83 AV6.15l l l l 43 44 PCT 36 2.25 AV6 -.24l l 43 44 PCT 28 1.32 AV4.26l l 43 44 PCT 35 2.19 AV5 -.03l l 43 44 PCT 43 3.59 AV3 -.05l l 43 44 PCT 27 1.22 AV2.18l l l l 49 44 PCT 23.80 AV6 -.18l l l l 51 45 PCT 25.94 AV3.13l l 51 45 PCT 37 2.09 AV4.19l l 51 45 PCT 24.83 AV2 -.18l l l l 45 46 PCT 20.64 AV5.16l l l l 41 47 PCT 40 2.96 AV4 -.03l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
8 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 41 47 PCT 29 1.42 AV5.20l l 41 47 PCT 38 2.60 AV6 -.21l l 41 47 PCT 24 1.02 AV2 -.20l l l l 44 48 PCT 28 1.27 AV5.16l l l l 44 49 PCT 29 1.43 AV5.24l l 44 49 PCT 23.93 AV4.16l l l l 48 50 PCT 35 2.13 AV3.26l l 48 50 PCT 33 1.80 AV4.18l l 48 50 PCT 31 1.67 AV5.15l l l l 50 51 PCT 32 1.77 AV1 -.23l l 50 51 PCT 34 1.97 AV5.15l l 50 51 PCT 36 2.26 AV4.19l l 50 51 PCT 31 1.63 AV2.15l l l l 41 52 PCT 20.72 AV4.21l l l l 33 54 PCT 25 1.09 AV2.20l l 33 54 PCT 21.85 AV3.33l l l l 35 54 PCT 27 1.30 AV2 -.24l l 35 54 PCT 21.82 AV5 -.20l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
9 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 50 54 PCT 20.74 AV1 -.18l l 50 54 PCT 20.73 AV6 -.20l l l l 51 54 PCT 37 2.20 AV4.18l l 51 54 PCT 39 2.44 AV2 -.36l l 51 54 PCT 39 2.43 AV3 -.23l l l l 45 55 PCT 26 1.00 AV4.16l l l l 48 55 PCT 33 1.87 AV3.18l l l l 44 56 PCT 34 1.97 AV3.26l l 44 56 PCT 39 2.69 AV4.18l l 44 56 PCT 39 2.74 AV5 -.02l l 44 56 PCT 26 1.14 AV6.16l l l l 50 56 PCT 24.95 AV5.21l l 50 56 PCT 36 2.21 AV4.18l l 50 56 PCT 28 1.32 AV3.21l l l l 45 57 PCT 40 2.56 AV3 -.28l l 45 57 PCT 23.79 AV2 -.10l l l l 41 58 PCT 22.85 AV3.16l l 41 58 PCT 34 2.02 AV4.35l l 41 58 PCT 32 1.72 AV5 -.91l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
10 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l l l 50 58 PCT 33 1.84 AV4.19l l 50 58 PCT 25 1.06 AV3.16l l l l 35 60 PCT 25 1.08 AV5 -.75l l l l 40 60 PCT 21.82 AV5 -.48l l 40 60 PCT 22.91 AV4.00l l l l 35 61 PCT 22.86 AV3 -.22l l l l 52 62 PCT 22.88 AV1 -.20l l l l 41 64 PCT 29 1.23 AV5 -.38l l 41 64 PCT 20.58 AV5.16l l 41 64 PCT 20.61 AV3 -.18l l l l 44 66 PCT 23.92 AV2.32l l l l 44 67 PCT 21.77 AV4.24l l 44 67 PCT 22.84 AV3.24l l l l 46 68 PCT 29 1.39 AV2.19l l l l 50 68 PCT 20.72 AV5.14l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
11 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 34 69 PCT 26 1.00 AV3 -.20l l 34 69 PCT 24.85 AV4 -.18l l l l 44 70 PCT 33 1.66 AV6.00l l 44 70 PCT 27 1.20 AV5.25l l 44 70 PCT 23.91 AV2.37l l l l 45 70 PCT 37 2.47 AV2.24l l l l 46 70 PCT 28 1.37 AV2.16l l l l 57 70 PCT 23.92 AV5 -.19l l l l 36 71 PCT 36 2.32 AV4.18l l 36 71 PCT 33 2.01 AV3.26l l 36 71 PCT 40 3.11 AV2 -.30l l 36 71 PCT 35 2.23 AV1.15l l 36 71 PCT 41 3.36 AV5 -.26l l l l 32 72 PCT 29 1.22 AV1.16l l l l 34 72 PCT 21.71 AV2.15l l l l 48 74 PCT 27 1.21 AV2 -.19l l l l 52 74 PCT 30 1.54 AV1.13l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
12 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l l l 44 75 PCT 27 1.30 AV1.18l l 44 75 PCT 23.99 AV3 -.18l l l l 52 76 PCT 28 1.45 AV3 -.18l l 52 76 PCT 20.79 AV1.10l l 52 76 PCT 21.84 AV2 -.18l l l l 44 77 PCT 25 1.10 AV3.18l l 44 77 PCT 30 1.65 AV4 -.15l l l l 39 78 PCT 25.94 AV3 -.18l l l l 36 80 PCT 21.85 AV4.10l l l l 39 80 PCT 23.78 AV2 -.20l l l l 50 80 PCT 30 1.58 AV3.21l l 50 80 PCT 38 2.77 AV4 -.28l l l l 43 81 PCT 26.94 AV3 -.18l l 43 81 PCT 21.63 AV5 -.23l l l l 47 81 PCT 26 1.01 AV2 -.21l l 47 81 PCT 32 1.47 AV3.13l l l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
13 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 49 81 PCT 27 1.08 AV2 -.18l l l l 43 82 PCT 24.83 AV4 -.18l l l l 49 82 PCT 27 1.04 AV2 -.13l l l l 39 83 PCT 29 1.19 AV3.21l l 39 83 PCT 23.79 AV4.13l l l l 48 83 PCT 24.83 AV3 -.15l l 48 83 PCT 22.73 AV4 -.15l l l l 41 84 PCT 34 1.69 AV4 -.20l l 41 84 PCT 34 1.81 AV3 -.25l l 41 84 PCT 29 1.26 AV5 -.18l l l l 46 84 PCT 33 2.03 AV3 -.20l l l l 46 85 PCT 20.64 AV1.18l l l l 49 85 PCT 25.97 AV4 -.18l l 49 85 PCT 29 1.30 AV2.18l l l l 50 85 PCT 20.68 AV6 -.15l l 50 85 PCT 27 1.12 AV4.13l l 50 85 PCT 26 1.06 AV5.15l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
14 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l l l 40 86 PCT 21.79 AV3.00l l l l 40 87 PCT 33 1.66 AV4 -.15l l l l 50 87 PCT 20.63 AV5.18l l l l 45 88 PCT 21.76 AV4.55l l 45 88 PCT 29 1.43 AV5.00l l l l 49 88 PCT 31 1.69 AV4 -.23l l 49 88 PCT 23.89 AV5 -.21l l 49 88 PCT 21.75 AV3.16l l l l 50 88 PCT 27 1.26 AV2.00l l 50 88 PCT 31 1.60 AV4.00l l 50 88 PCT 24.98 AV3.00l l 50 88 PCT 29 1.42 AV5.00l l l l 38 89 PCT 25.98 AV4.18l l 38 89 PCT 20.62 AV3.13l l l l 39 89 PCT 20.64 AV2 -.12l l l l 40 89 PCT 33 1.65 AV4.19l l 40 89 PCT 21.73 AV3 -.15l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
15 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 40 89 PCT 25.94 AV2 -.20l l l l 36 90 PCT 30 1.40 AV4 -.25l l 36 90 PCT 41 2.92 AV3 -.25l l 36 90 PCT 26 1.06 AV5 -.18l l 36 90 PCT 34 1.88 AV6 -.26l l l l 39 90 PCT 30 1.42 AV5 -.18l l 39 90 PCT 22.81 AV4.21l l 39 90 PCT 25.99 AV2.13l l 39 90 PCT 21.76 AV1.05l l l l 46 90 PCT 20.67 AV4 -.18l l l l 48 90 PCT 23.86 AV5 -.13l l 48 90 PCT 25 1.03 AV3 -.18l l l l 53 90 PCT 24.92 AV6 -.16l l 53 90 PCT 21.71 AV5 -.15l l 53 90 PCT 27 1.19 AV4 -.13l l l l 43 92 PCT 31 1.52 AV3 -.23l l l l 45 92 PCT 22.80 AV5 -.21l l l l 49 92 PCT 20.70 AV3 -.15l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
16 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 49 92 PCT 34 1.82 AV2 -.23l l 49 92 PCT 28 1.22 AV4 -.18l l l l 45 93 PCT 21.86 AV5.13l l 45 93 PCT 20.78 AV4 -.10l l l l 41 94 PCT 31 1.50 AV2.18l l 41 94 PCT 28 1.21 AV3.13l l l l 43 94 PCT 23.83 AV5 -.18l l 43 94 PCT 27 1.14 AV2 -.20l l l l 38 95 PCT 22.93 AV2.15l l l l 40 95 PCT 20.83 AV6 -.18l l l l 44 95 PCT 27 1.33 AV2.15l l 44 95 PCT 40 3.11 AV3.29l l l l 45 95 PCT 25 1.19 AV4.18l l 45 95 PCT 33 1.98 AV5.18l l 45 95 PCT 22.92 AV6 -.18l l l l 44 96 PCT 34 1.86 AV3 -.20l l l l 45 96 PCT 30 1.47 AV5 -.18l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
17 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l l l 41 97 PCT 32 1.95 AV4.21l l 41 97 PCT 25 1.20 AV3.10l l l l 46 97 PCT 29 1.59 AV3.13l l l l 40 98 PCT 26 1.04 AV2.16l l 40 98 PCT 23.86 AV3 -.13l l l l 41 100 PCT 28 1.23 AV2.16l l 41 100 PCT 29 1.34 AV3.16l l 41 100 PCT 21.75 AV4.13l l l l 38 101 PCT 25 1.17 AV4 -.20l l 38 101 PCT 21.85 AV5.13l l 38 101 PCT 34 2.19 AV3 -.23l l l l 40 103 PCT 27 1.39 AV4.18l l 40 103 PCT 28 1.48 AV3 -.20l l l l 38 105 PCT 20.82 AV4 -.18l l 38 105 PCT 35 2.28 AV3 -.23l l l l 35 107 PCT 26 1.23 AV3.13l l l l 36 107 PCT 32 1.90 AV4 -.20l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
18 ST Max
SG - D >= 20% WEAR AT AVB Wolf Creek 1 RF26 SAP 20240401 09/26/2024 10:17:16
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
l 36 107 PCT 30 1.69 AV5.00l l l l 35 108 PCT 33 1.73 AV4 -.17l l l l 33 109 PCT 21.86 AV5.12l l l l 32 110 PCT 20.58 AV5 -.21l l l l 35 110 PCT 34 1.86 AV4.16l l l l 30 113 PCT 20.67 AV5 -.21l
+----+----+----+----+---------+----+---------+
l ROW COL IND PER VOLTS LOCN INCH1l
+----+----+----+----+---------+----+---------+
Tubes: 169 Records: 311 19 ST Max