ML22305A681
| ML22305A681 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 11/01/2022 |
| From: | Ameren Missouri, Union Electric Co |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML22305A679 | List: |
| References | |
| ULNRC-06773 | |
| Download: ML22305A681 (1) | |
Text
Enclosure to ULNRC-06773 Page 1 of 29 Callaway Energy Center Steam Generator Tube Inspection Report 28 pages follow this cover sheet
Callaway Energy Center Steam Generator Inspection Report 2022 1 l P a g e 1.0 PURPOSE The purpose of this report is to document that the Callaway Unit 1 steam generator tube integrity performance criteria have been met for operating cycles 22, 23, 24, and 25 (April 2016 to April 2022 of up to 4.655 EFPY duration) and to also demonstrate that there is reasonable assurance that the performance criteria will be met for the upcoming 5-cycle operating period, consisting of cycles 26, 27, 28, 29 and 30, not to exceed 7.2 EFPY.
2.0 REPORTING REQUIREMENTS Technical Specification (TS) 5.6.10 requires that "A report shall be submitted within 180 days after the initial entry into MODE 4 following completion of an inspection performed in accordance with TS 5.5.9, 'Steam Generator (SG) Program.' The report was prepared such that it will meet the requirements of revised TS 5.6.10 (i.e., revised per TSTF-577 as proposed per license amendment request letters ULNRC-06744 and ULNRC-06766). The report shall include:
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 size (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 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; 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 percentage in each steam generator; and f) The results of any SG secondary side inspections.
Callaway Energy Center Steam Generator Inspection Report 2022 2 l P a g e 3.0 DESIGN AND OPERATING PARAMETERS Steam Generator Design and Operating Parameters SG Model / Tube Material / # SGs per unit Framatome 73/19 / Alloy 690TT / 4
- of tubes per SG / Nominal Tube Dia. / tube thickness 5872 / 0.75 in / 0.043 in Support Plate Style / Material Broached Trefoil / SA-508 Last Inspection Date April 2016 EFPM since the last inspection 55.859 Total cumulative SG EFPY 15.242 Mode 4 initial entry May 23, 2022 Observed P/S Leak Rate since the last inspection and how it trended with time None Nominal indicated value of Thot during Cycle X at full power 615 degrees F (This value could change slightly depending on where and when the measurement is taken)
Loose Parts Strainer The feedwater distribution system composed of a feedwater ring equipped with 30 inverted J-tubes and an anti-stratification device (helix). The tee of the feedwater ring containing the helix is seal welded onto the feedwater nozzle Callaway's replacement SGs have a loose parts trapping system (LPTS). The LPTS installed at the top of the downcomer is composed of twelve cells of fine mesh stainless steel bolted onto a flange welded on the bundle wrapper outer wall.
Deviations from SGMP guidelines since the last inspection None Steam Generator Schematic See below Figure
Callaway Energy Center Steam Generator Inspection Report 2022 3 l P a g e Figure 1 - Callaway-1 Framatome 73/19T General Arrangement
Callaway Energy Center Steam Generator Inspection Report 2022 4 l P a g e 4.0
SUMMARY
The steam generator tube in-service inspections were completed by Framatome Inc. during the Refuel 25 outage. An in-service inspection was performed on all four steam generators, primary and secondary side including 100% of the in-service tubes in each SG. The scope of inspections performed is described in the following inspection report. The service-related degradation mechanisms identified by eddy current inspection (primary side) were 459 anti-vibration bar (AVB) wear indications and 183 tube support plate (TSP) wear indications in total from all four steam generators. Callaways TS plugging limit was set at 40% through wall (TW) to maintain tube integrity for cycles 26, 27, 28, 29 and 30. In total, 9 tubes were removed from service due to AVB wear. TSP wear had no impact on RF-25 tube plugging. This equates to a total of 0.270% of tubes, from all four steam generators removed from service to date.
Sludge Lancing (secondary side) was performed on all 4 steam generators. A combined total of 20.5 pounds of sludge was collected by Framatome. The steam generator tubes and the top of tubesheet were clean with exception of a small sludge pile located near the center of the hot and cold legs on each steam generators top of tubesheet.
Steam Drum (secondary side) inspections were performed on three steam generators, SG-A, SG-B and SG-C. The original scope was the inspection of SG-B and SG-C steam drums, however, with the presence of foreign objects in the steam drums it was determined to expand the scope to the SG-A steam drum. Bolts and washers were found lying on the loose parts trapping screens and were retrieved. These foreign objects were a result of equipment degradation of the feedwater isolation valves (FWIV) upstream of the steam generators. A total of 17 bolts and 15 washers were retrieved from the three steam generators' steam drums. One washer was retrieved during FOSAR activities after sludge lancing SG-C. One washer was evaluated as a potential loose part in the steam generators during the upcoming cycles since it was not retrieved from the system. Finally, the Condition Monitoring Report concluded that the Callaway steam generator tubes satisfied the structural integrity performance criterion, accident induced leakage criterion and operational leakage criterion.
Callaway Energy Center Steam Generator Inspection Report 2022 5 l P a g e 5.0 INSPECTION SCOPE REPORT The Callaway Plant was shut down on April 4, 2022 for its 25th refueling outage. During the refueling outage an in-service inspection was performed on all four steam generators. The inspection scope was as follows:
Bobbin Coil ECT Examinations o 100% of all in-service tubes, full length tube-end to tube-end o All probes were run through a deposit mapping standard Array Coil ECT Examinations o Hot Leg and Cold Leg Examination The hot leg/cold leg tubesheet and 1st span in tubes located in the periphery region were examined with a 0.610 array probe (610XP). Acquisition examined from TEH +0.00 to 01H +1.00 and TEC +0.00 to 01C +1.00 while analysis analyzed from TEH +0.00 to 01H+1.00 (Hot Leg), TEC +0.00 to 01C+1.00 (Cold Leg). The periphery tube region is defined as the three outermost tubes adjacent to the annulus, and all tubes in rows 1 through 6 along the tube free lane.
20% of tubes identified as having non-nominal tubesheet drill hole diameters were inspected with the 610XP array probe.
o Hot Leg Only Examination One hundred percent (100%) of tubes with sludge indications from the 1R21 sludge analysis in the hot leg tubesheet were inspected with the 610XP array probe.
+Point' Coil ECT Examinations o Inspected all Appui locations with +Point' Special Interest Examinations with either Array or +Point' probes:
o Bobbin I codes (ADI, DFI, DSI, DTI, LPI and NQI Indications) o New Bobbin BLG, IDC, PVN, GEO, and DNT Indications or change in voltage >
2 Volts from 1R21 New is defined as there not being any bobbin signal present in any historical data from the PSI o Samples of AVB and TSP wear.
New AVB wear >16%TW AVB wear with a change >13%TW from 1R21 TSP wear with a change >10% from 1R21 Bobbin re-sized depths using the fixed curve o All new TSP wear indications.
o Sample of tubes from SGA shown in [Table 3-3, Ref [3.a)) with array HL+Ubend only for deposit mapping purposes to characterize potential TSP broach blockage.
o Bobbin PLP Indications and one tube bounding exams for all Array/+Point' confirmed PLP indications.
o All potential foreign object wear
Callaway Energy Center Steam Generator Inspection Report 2022 6 l P a g e o Bobbin PVN for +Point' Mag Bias o Tubes subsequently identified with Possible Loose Part (PLP) Indications with array bounded by 1-Tube with the 610XP array probe.
o Additional indications at the discretion of analysis or Integrity Engineering.
Secondary Side Inspections:
o Top of Tubesheet (TTS) water lancing in all four SGs Prior to water lancing a pre-look visual inspection was performed to examine the sludge pile in the C Steam Generator.
o Foreign Object Search and Retrieval (FOSAR) performed in all four SGs As required based on ECT TTS annulus area in all four SGs No-tube lane in all four SGs Inner bundle passes o Visual Inspections of steam drums in SGB, SGC, and SGA (expanded scope)
Inspections included the loose parts trapping system, the feedring components, and the moisture separating components. Inspections of these areas focused on adverse conditions such as:
- Loose/missing hardware/bolting
- Signs of Flow Accelerated Corrosion
- Structural deficiencies including welds
- Conditions that would pose a risk to tube integrity Visual Examinations o As-found and as-left visual examinations of primary channel heads (both Hot Leg and Cold Leg) o NSAL 12-1 (and IN 2013-20) primary bowl inspections in all four SGs (both Hot Leg and Cold Leg) o Visual inspections of all plugs installed in the Callaway SGs both prior and during 1R25 5.1 Primary Side Inspection The bobbin probe (ETSS 96004.3 and ETSS I-96043.4) is used for depth sizing AVB and TSP wear, respectively. The +Point' and Array probes were primarily used as a diagnostic tool to resolve ambiguous bobbin probe indications, and to supplement SSI and bobbin inspections for potential loose parts.
Callaway Energy Center Steam Generator Inspection Report 2022 7 l P a g e 5.1.1 Eddy Current Inspections Figure 2 - RF25 Eddy Current Inspection Scope Summary
Callaway Energy Center Steam Generator Inspection Report 2022 8 l P a g e Figure 3 - RF25 Summary of Wear Indications Indication Code SGA SGB SGC SGD Total Indications Indications Indications Indications Indications DNT 0
1 0
0 1
DNG 0
13 4
6 23 MBM 2
1 4
3 10 TWD (AVB) 128 100 190 41 459 TWD (TSP) 66 57 33 27 183 PLP 0
0 0
0 0
Callaway plugged 9 tubes due to AVB wear during refuel 25. The total number of tubes repaired to date is 64 (1 plugged during manufacturing). This is 0.270% total tubes plugged to date.
5.1.2 Primary Side Visual Examination Remote visual examinations of the primary channel heads (hot leg and cold leg in each SG) were performed upon removal of the primary manways (i.e., as-found) and immediately prior to re-installation of the manways (i.e., as-left). Visual inspections were also performed to the NSAL 12-1 requirements. No degradation of the cladding, welds, or structures was identified within the channel heads, and no foreign objects were identified. All previously installed plugs in both channel heads of each SG were visually examined. No plug deficiencies were identified.
5.2 Secondary Side Inspection This is discussed in detail below in Section 10 of this report.
- 6.
NDE TECHNIQUES WITH INCREASED DEGRADATION The bobbin probe (ETSS 96004.3 and ETSS I-96043.4) is used for depth sizing AVB and TSP wear, respectively. The +Point' and Array probes were primarily used as a diagnostic tool to resolve ambiguous bobbin probe indications, and to supplement SSI and bobbin inspections for potential loose parts.
- 7.
NDE FOR EACH DEGRADATION MECHANISM Parameter AVB Wear TSP Wear ECT Probe Bobbin Bobbin ETSS I-96041.1 Rev. 6 I-96043.4 Rev. 0 NDE depth sizing regression Depth = 1.01*NDE + 0.99 Depth = 1.01*NDE + 1.89 NDE depth sizing technique uncertainty Sy,x = 3.29 %TW Sy,x = 2.47 %TW
Callaway Energy Center Steam Generator Inspection Report 2022 9 l P a g e Degradation Mechanism(s)
Probe EPRI ETSS Demonstrated/
Extended Applicability Detection Sizing Applicability Actual %TW vs. NDE
%TW Technique Uncertainty (Sy,x)
%T W
Total Uncertainty
@ 95/50
%T W
AVB wear Bobbin 96004.3 Rev. 13 Note 2 AVB & TSP Detection of AVB wear in the crossover regions CMOA @ AVB crossover regions Y=0.97x+2.50 3.10 5.1 I-96041.1 Rev. 6 Note 1 AVB All CMOA: AVB
&TSP Y=1.01x+0.99 3.29 5.41 Array I-17909.1 Rev. 1 AVB (axial sensitive coils)
All CMOA @ AVB Y=1.00x-0.22 2.21 3.64 I-17909.4 Rev. 1 AVB (circ sensitive coils)
All CMOA @ AVB Y=1.01x-0.15 3.74 6.15
+PointTM I-10908.5 Rev.0 AVB All CMOA @ AVB Y=0.99x-0.23 1.82 3.0 APPUI wear Bobbin 96004.1 Rev. 13 Note 1 Appui Wear,TSP,AVB All CMOA @ Appui Y=0.98x+2.89 4.19 6.89
+PointTM Ref. [3.m]
Appui Wear All CMOA @ Appui TSP Wear Bobbin I-96043.4 Rev. 0 Single land (flat) and tapered wear broached TSPs All CMOA @ TSP Y=1.01x+1.89 2.47 4.06 Array I-11956.3 Rev 3 Broached TSP (axial sensitive)
All CMOA @ TSP Y=1.03x-1.22 2.42 3.98 I-11956.4 Rev 3 Broached TSP (circ sensitive)
All CMOA @ TSP Y=0.97x+2.09 4.60 7.57
+PointTM 96910.1 Rev. 11 Broached TSPs All CMOA @ TSP Y=0.95+6.70 5.36 8.82
Callaway Energy Center Steam Generator Inspection Report 2022 10 l P a g e Degradation Mechanism(s)
Probe EPRI ETSS Demonstrated
/ Extended Applicability Detection Sizing Applicability Actual %TW vs. NDE
%TW Technique Uncertainty (Sy,x)
%TW Total Uncertainty
@ 95/50
%TW Pitting Bobbin 96005.1 Rev. 9 Presence of Copper Sludge Pile/Freespan All See Note 5 Y=0.14x+33.3 4
13.53 22.26 Array 24998.1 Rev. 1 Freespan/
Detection of PLP Wear w/out part All Yes N/A N/A N/A Foreign objects/wear Bobbin 27091.2 Rev 2 LPW (Part not present)/LPW (Part Present)
All N/A Array 17901.1 Rev. 0 17901.3 Rev. 0 17902.1 Rev. 0 17902.3 Rev. 0 17903.1 Rev. 0 17903.3 Rev. 0 17904.1 Rev. 0 17904.3 Rev. 0 17905.1 Rev. 0 17905.3 Rev. 0 17906.1 Rev. 0 17906.3 Rev. 0 LPW (part not present) /LPW (part present)
See ETSS for flaw morphology (Note 3)
All Yes Y=1.01x-0.17 Y=0.97x+2.38 Y=0.99x+0.74 Y=1.00x+0.67 Y=0.96x+2.30 Y=0.96+2.53 Y=0.99x+1.20 Y=0.98x+1.89 Y=0.98x+0.76 Y=0.96x+2.12 Y=1.01x-.22 Y=0.98x+1.55 2.24 3.76 2.16 4.63 2.52 3.66 2.07 3.06 2.22 4.72 2.76 4.95 3.68 6.19 3.55 7.62 4.15 6.02 3.41 5.03 3.65 7.76 4.45 8.14
Callaway Energy Center Steam Generator Inspection Report 2022 11 l P a g e Degradation Mechanism(s)
Probe EPRI ETSS Demonstrated
/ Extended Applicability Detection Sizing Applicability Actual %TW vs. NDE
%TW Technique Uncertainty (Sy,x)
%TW Total Uncertainty
@ 95/50
%TW
+Point' 27901.1 Rev 1 27902.1 Rev 2 27903.1 Rev 1 27904.1 Rev 2 27905.1 Rev 2 27906.1 Rev 1 27907.1 Rev 2 LPW (part not present) /LPW (part present)
See ETSS for flaw morphology (Note 3)
All CMOA Freespan, expansion transitions, and at structures (Part not present)
See ETSS (Note 2)
See ETSS (Note 2)
See ETSS (Note 2)
Various Bobbin Array
+Point' Various All Locations N/A (Note 4)
Notes:
- 1. EPRI Appendix H technique 96004.1 and EPRI MAPOD Appendix I techniques 96041.1 R6 are both qualified for the detection and sizing of AVB wear. Technique 96004.1 was extended to the detection of APPUI wear per Reference [28]. The calibration requirements are different between these two techniques HOWEVER the site ETSS calibration requirements meet or exceed both. The decision to list both techniques for AVB wear detection and sizing is conservatively based on two factors; 1) The EPRI ETSS calibration requirements are different for the two techniques (even though the site ETSS meet or exceed both) and 2) EPRI ETSS 96004.1 is specifically discussed and extended for APPUI wear in Reference [28].
- 2. EPRI Appendix H technique 96004.3 is used for detection and sizing (if required) of AVB wear in the u-bend apex region also referred to as crossover tubes.
- 3. The applicable 279xx series +Point' technique or 1790x serries Array technique will be used for sizing based on analyst review and morphology of the flaw
- 4. For the purposes of this document, diagnostic techniques are actually EPRI Appendix H and/or I qualified techniques that fall outside of the site validation process. The specific applications where diagnostic techniques will be utilized have been evaluated and determined to be consistent with industry practice. In addition, the data analysis instructions provided in the site Guidelines/ETSS provide the requisite assurance that unexpected degradation mechanisms will be detected and reported.
- 5. Use Array or +Point' technique over Bobbin technique for sizing
Callaway Energy Center Steam Generator Inspection Report 2022 12 l P a g e 7.1 The location, orientation (if linear), measured size, and voltage responses of each indication.
See attachment 1 of this report for all indications over 20% TW for each SG. There were no indications greater than or equal to 40%TW in all four SGs.
Table 4 RF25 Summary of AVB Wear Bobbin Indications SG Number of Indications New and Repeat Depths
(%TW)
New Repeat Average Upper 95th Max New Max (New and Repeat)
A 8
120 16.1 29.7 19.0 35.0 B
5 95 17.1 32.0 14.0 36.0 C
7 183 15.8 29.0 21.0 36.0 D
3 38 13.2 25.0 12.0 29.0 All SGs 23 436 15.9 30.0 21.0 36.0 AVB wear was reported in each of the four steam generators. A total of 459 AVB wear indications were detected. The maximum reported AVB wear depth was 36%TW. There are 91 indications in 61 tubes of <20% TW in SG-A, 66 indications in 42 tubes of <20% TW in SG-B, 136 indications in 84 tubes of <20% TW in SG-C, and 35 indications in 21 tubes of <20% TW in SG-D.
Table 5 RF25 Summary of TSP Wear Indications SG Number of Indications New and Repeat Depths
(%TW)
New Repeat Average Upper 95th Max New Maxi (New and Repeat)
A 16 50 10.9 15.0 14.0 19.0 B
33 24 11.7 16.2 15.0 20.0 C
12 21 11.8 17.8 12.0 23.0 D
17 10 10.7 14.0 14.0 15.0 All SGs 78 105 11.3 15.9 15.0 23.0 TSP wear was reported in each of the four steam generators. A total of 183 TSP wear indications were detected. The maximum reported TSP wear depth was 23%TW. There are 66 indications in 55 tubes of <20% TW in SG-A, 56 indications in 50 tubes of <20% TW in SG-B, 32 indications in 28 tubes of <20% TW in SG-C, and 27 indications in 25 tubes of <20% TW in SG-D.
Callaway Energy Center Steam Generator Inspection Report 2022 13 l P a g e 7.2 Condition Monitoring The Condition Monitoring report concluded that the Callaway steam generator tubes satisfied the structural integrity performance criterion, accident induced leakage criterion and operational leakage performance criterion specified in Technical Specification 5.5.9 and LCO 3.4.13, respectively. There was no degradation identified in RF25 in any of the SGs that was not bounded by the previous operational assessment (OA). Callaway did not perform any tube pulls or in-situ testing. The figure below shows a comparison to the most recent operational assessment completed for Callaway's SG inspection deferral from RF24 to RF25 to the actual RF25 results. As shown below, the RF24 OA was conservative in its predictions and bounded RF25 results in number of indications, growth rate, and the max depth measured for both AVB and TSP wear.
Figure 4 - 1R25 Results Comparison to 1R24 OA Projections Degradation 1R24 OA Deferral Projections(Note 1) 1R25 Results AVB Wear
- Indications 543 (in limiting SGC) 190 (in limiting SGC)
Upper 95th Growth Rate
(%TW/EFPY) 4.49 (See Note 1) 1.9 (combined growth rate from all SGs)
Maximum Depth
(%TW) 69 (See Note 2) 36 TSP Wear
- Indications 478 183 Upper 95th Growth Rate
(%TW/EFPY) 4.59 (See Note 1) 1.3 Maximum Depth
(%TW) 62 (See Note 2) 23 NOTES
- 1. 1R24 projections from 1R24 Deferral OA MathCAD Full Bundle Model Run for AVB and TSP wear
- 2. Based on applying maximum growth rate from AVB and TSP Kunin and applying it to maximum depth flaw that was returned to service in 1R21 over the actual 1R22-1R25 cycle length.
7.3 Tubes Plugged during RF25 There were no tubes that met the Technical Specification plugging limit of >=40% TW in any of the SGs. To improve margin for a 5-cycle OA, the following preventative tube plugging (PTP) criteria was additionally implemented at 1R25
- 1. SGA, SGB, SGC, SGD
- a. Tubes with a maximum AVB wear indication >=35%
- b. Any tube with a Wear Index >100
- i. Wear index is the sum of all AVB wear indication %TW values in the tube
- c. Any tube with AVB wear growth >= 18%
Callaway Energy Center Steam Generator Inspection Report 2022 14 l P a g e Figure 5 - SG-A Tube Plug Summary Figure 6 - SG-B Tube Plug Summary Figure 7 - SG-C Tube Plug Summary SG Row Col Hot Leg Cold Leg Reason for Tube Repair Tube Qty.
Stab PTP Criterion Callaway1CR 94 66 Rolled Rolled PTP 18% @ AV6+0.00 1
No (c)
Callaway1CR PTP 29% @ AV5-0.02 Callaway1CR PTP 27% @ AV4+0.00 Callaway1CR PTP 31% @ AV3-0.02 Callaway1CR PTP 6% @ AV2+0.14 Callaway1CR 97 69 Rolled Rolled PTP 36% @ AV4+0.02 1
No (a)
Callaway1CR PTP 36% @ AV5-0.02 Callaway1CR 110 72 Rolled Rolled PTP 35% @ AV6+0.00 1
No (a)
Figure 8 - SG-D Tube Plug Summary SG Row Col Hot Leg Cold Leg Reason for Tube Repair Tube Qty.
Stab PTP Criterion Callaway1DR N/A N/A N/A N/A N/A 1
N/A N/A SG Row Col Hot Leg Cold Leg Reason for Tube Repair Tube Qty.
Stab PTP Criterion Callaway1AR 75 83 Rolled Rolled PTP 29% @ AV5-0.02 1
No (c)
Callaway1AR PTP 34% @ AV4+0.00 Callaway1AR PTP 30% @ AV3+0.00 Callaway1AR PTP 13% @ AV2+0.00 Callaway1AR 109 61 Rolled Rolled PTP 35% @ AV6-0.07 1
No (a)
Callaway1AR 111 71 Rolled Rolled PTP 25% @ AV6+0.02 1
No Callaway1AR PTP 26% @ AV5-0.02 (b)
SG Row Col Hot Leg Cold Leg Reason for Tube Repair Tube Qty.
Stab PTP Criterion Callaway1BR 76 68 Rolled Rolled PTP 13% @ AV6+0.02 1
No (c)
Callaway1BR PTP 14% @ AV5-0.02 Callaway1BR PTP 24% @AV4-0.02 Callaway1BR PTP 27% @ AV3-0.05 Callaway1BR PTP 26% @ AV2-0.05 Callaway1BR 88 88 Rolled Rolled PTP 36% @ AV4+0.00 1
No (a)
Callaway1BR 95 57 Rolled Rolled PTP 35% @ AV4+0.02 1
No (a)
Callaway Energy Center Steam Generator Inspection Report 2022 15 l P a g e Figure 9 - RF25 Repairable Tube Summary Location Tube Degradation SGA SGB SGC SGD Total AVB Wear 3
3 3
0 9
TSP Wear 0
0 0
0 0
Total Tubes Plugged 3
3 3
0 9
8.0 An analysis summary of the tube integrity conditions The operational assessment performed during RF25 provides reasonable assurance that the performance criteria will be met over the next five operating cycles (cycles 26, 27, 28, 29 and
- 30) which includes conservative assumptions for growth rate distributions, cycle length, new indication initiation, and differential pressure (3P). The analysis of five operating cycles assumes that Callaways license amendment request will be approved for the implementation of TSTF-577 to change the inspection interval to a maximum allowable 96 EFPM period.
8.1 AVB Wear The OA for AVB wear was implemented using the Framatome MathCAD SG Full Bundle, Fully Probabilistic Operational Assessment model. The OA methodology utilizes a probabilistic full bundle approach that samples from a distribution of structural effective lengths and depths, for each individual flaw depth returned to service, to arrive at the overall bundle probability of survival for a given steam generator. This follows the fundamental definition of the projected OA worst case flaw as stated in the EPRI Integrity Assessment Guidelines. The per-bundle approach (which considers each flaw depth returned to service) is the fundamental OA requirement. It is more responsive to extreme value growth rates because it explicitly captures the fact that if more deep flaws are returned to service, there is an increasing probability that large growth rates will be matched with large beginning-of-cycle (BOC) depths, making deep end-of-cycle (EOC) flaws more likely. Hence, this approach will yield a lower repair limit for a SG which has a large population of flaws.
The full bundle analysis treats AVB wear indications as Axial Partial Through-wall Degradation less than 135° in circumferential extent. The OA methodology was based on using the probability of burst, namely 3P, of 3885 psid as outlined in the Degradation Assessment over 7.2 EFPY. A Kunin fit was used to model the 1R25 NDE growth rate distribution. This distribution was formed by combining the growth rates from all four SGs.
As part of the OA full bundle analysis, all pertinent uncertainties were considered including material properties, NDE technique, burst equation, and growth allowances. The excellent probability of detection (POD) associated with ETSS I-96041.1 regarding tube wear at AVB locations causes little concern for undetected wear scars.
Callaway Energy Center Steam Generator Inspection Report 2022 16 l P a g e Figure 10 - Probability of Meeting 3P at 50% Confidence after 7.2 EFPY (AVB Wear)
SG POS Minimum Required POS A 0.997 0.95 B
0.998 0.95 C
0.997 0.95 D 0.999 0.95 Figure 11 - RF30 OA AVB Projections 1R30 OA Projections AVB Wear
- Indications 542 (in limiting SGC)
Upper 95th Growth Rate
(%TW/EFPY) 2.48 (See Note 1)
Maximum Depth
(%TW) 52 (See Note 2)
NOTES
- 1. Determined from Kunin growth rate used in AVB Full Bundle Model.
- 2. Based on applying upper 95th growth rate from AVB Kunin and applying it to maximum depth flaw that was returned to service in 1R25 over the projected 1R26-1R30 cycle length.
8.2 TSP Wear The OA for TSP wear was implemented using the Framatome fully probabilistic operational assessment model following the same methodology as the AVB wear OA.
Due to the smaller number of TSP indications found during the outage all flaws were conservatively grouped into one steam generator.
The results SGA are provided in Figure 12. The POS for SG-A is greater than the SG Program minimum allowable of 95%; therefore, continued operation will not result in TSP wear that challenges tube integrity prior to the next SG inspection (1R30).
Callaway Energy Center Steam Generator Inspection Report 2022 17 l P a g e Figure 12 - Probability of Meeting 3P at 50% Confidence after 7.2 EFPY (TSP Wear)
SG POS Minimum Required POS All 0.998 0.95 Notes
- 1. TSP flaws from all generators were included in SGA Figure 13 - R30 OA TSP Projections 1R30 OA Projections TSP Wear
- Indications 581(Total)
Upper 95th Growth Rate
(%TW/EFPY) 2.03 (See Note 1)
Maximum Depth
(%TW) 38 (See Note 2)
NOTES
- 1. Upper 95th from Kunin of TSP growth rate data.
- 2. Based on applying bounding upper 95th growth rate from TSP Bundle model with all flaws combined to largest TSP flaw returned to service over the projected 1R26-1R30 cycle length.
8.3 Foreign Object Wear 8.3.1 ECT PLPs and Post Lancing FOSAR Results The historical performance of the Callaway SGs with respect to foreign object wear, the results of outage 1R25 FOSAR, bobbin probe examinations, and array probe examinations provide reasonable assurance that foreign object wear will not challenge tube integrity prior to the next tube examination (1R30).
8.3.2 Unrecovered FWIV Washer The results of the analysis performed for the unrecovered washer shows that this washer will not create tube wear that is greater than the high probability structural limit of 59%TW for a bounding 1.0-inch length flaw. This result provides reasonable assurance that tube integrity will not be impacted by this unrecovered washer over cycles 26, 27, 28, 29, and 30.
Callaway Energy Center Steam Generator Inspection Report 2022 18 l P a g e 9.0 Tubes Plugged to Date Figure 14 - Callaway Tube Cumulative Plugging Status Outage SGA SGB SGC SGD Total Pre-Service 1
0 0
0 1
1R15 0
0 0
0 0
1R18 10 6
12 1
29 1R21 9
0 14 2
25 1R25 3
3 3
0 9
Total Tubes Plugged 23 9
29 3
64 Total Tubes 5872 5872 5872 5872 23488 Total Percentage 0.39%
0.15%
0.49%
0.05%
0.27%
Limit (%)
10.00%
10.00%
10.00%
10.00%
10.00%
- 10. Results of Secondary Side Inspection The planned FOSAR (annulus, no-tube lane, and inner bundle passes) examinations were performed in each of the four SGs following water lancing. One washer from the FWIV was retrieved on TTS in the periphery adjacent to the NTL. Visual inspections of the steam drums in SG-B and SG-C were performed as planned with expanded scope inspection SG-A due to FWIV equipment deficiencies.
10.1 Steam Drum Inspections During inspections of the SGB and SGC steam drums, no degradation was noted in the loose parts trapping system (LPTS), feedring, and moisture separating components. However, bolts and washers were found laying on the loose parts trapping screens and were retrieved after site notification. In response to this foreign material intrusion issue, an inspection of the main feedwater isolation valve (FWIV) for each SG was performed and verified that only the valves for SGs A, B, and C were missing bolts and washers. Therefore, the steam drum visual inspections were expanded to include SGA where bolts and washers were also found on the loose parts trapping screen. Below is a tally of the bolts/washers found in the steam drums of A, B, and C versus what was reported missing in the FWIV for each steam generator.
During the inspection of SGA steam drum 9 bolts and 8 washers were found and retrieved by SSI/FOSAR (CR 202202654). Site verified that 9 bolts and 9 washers were found missing from Alpha FWIV. Therefore, 1 washer is still missing.
Callaway Energy Center Steam Generator Inspection Report 2022 19 l P a g e o Note: The loose parts trapping screens were also found damaged in the steam drum (CR 202202265). Specifically, a portion of the wire mesh screen was noted missing and a dented screen that resulted in a gap between two adjacent screens was noted. Recommended actions from the CR evaluation were to perform FOSAR for the remaining missing FWIV bolts and washers, perform an extent of condition review for all steam generator steam drums and loose parts trapping screens, remove any loose wire remnants from the stainless-steel mesh that could potentially become foreign material and evaluate replacement of the damaged LPTS segment during a future outage.
During inspection of the SGB steam drum 1 bolt and 1 washer was found and retrieved by SSI FOSAR (CR 202202455). Site verified that 1 bolt and 1 washer were found missing from Bravo FWIV.
During inspection of the SGC steam drum 7 bolts and 6 washers were found and retrieved by SSI FOSAR (CR 20222432). Site verified that 8 bolts and 8 washers were found missing from Charlie FWIV. However, borescope inspections found the one missing bolt in a drain line and post lance inspection in SGC found one of the missing washers on TTS in the periphery adjacent to NTL (CR 202202730). Disassembly of the C FWIV also found a missing washer. Therefore, all of the C FWIV hardware that was missing was accounted for by the site.
In summary, all bolts/washers reported missing from the feedwater isolation valves are accounted for except for one washer. One washer from FWIV A is still missing. The potential for the washer, including the missing wire mesh piece, to enter the tube bundle and cause wear on tubes over the next five cycles (up to 7.2 EFPY) is evaluated in the CMOA.
10.2 Sludge Lancing Sludge Lancing was performed on all 4 steam generators. A combined total of 20.5 pounds of sludge was collected by Framatome. The steam generator tubes and the top of tubesheet were clean, with exception of a small sludge pile located near the center of each steam generators top of tubesheet. Overall, it is evident that the sludge pile region in SGA, SGC, and SGD has shown only marginal increase in size (i.e., number of affected tubes) since 1R21. The sludge pile region in SGB has decreased in size since 1R21. The average height of the sludge pile region in each SG has noticeably increased since 1R21. The deposit mapping study determined that the heaviest deposits are located on the hot leg, between the 6th and 8th TSP of each SG. The tube support analysis indicates that the flow restriction is not present in the flow regions for the tube support intersections.
Table 6 RF25 Sludge Lancing Results SGA SGB SGC SGD TOTAL Sludge Removed (lbs) 4.5 9.0 4.0 3.0 20.5
ATTACHMENT 1 This attachment shows the details of the indications observed on all four SGs with a 20-39%TW indication. See the below figures for each generator.
MANWAY NOZZLE 10 10 20 20 30 30 40 40 50 50 60 60 70 70 80 80 90 90 100 100 110 110 10 20 30 40 50 60 70 80 90 100 110 120 130 Ameren: S/G A HOT AREVA SCALE: 0.084494 X Wed May 04 08:54:51 2022 GROUP TUBES Previously Plugged 20 AVB TWD 20-39%
27 S/G A HOT PRIMARY FACE TOTAL TUBES: 5872 SELECTED TUBES: 47 OUT OF SERVICE (#): NA Framatome - FDMS map module Version 16.0 Ameren - Callaway Unit 1 1R25 - 04/22 AVB Wear 20% - 39%
Framatome Inc 05/04/22 08:53:14 Customer: Ameren Plant: Callaway Unit: 1 Component: S/G A Page 2 of 2 AVB Wear 20% - 39%
QUERY: QueryM1[1]
.qry ROW COL VOLTS DEG CHAN IND %TW LOCATION EXT EXT UTIL 1 UTIL 2 UTIL 3 CAL LEG PROBE IDX
=====================================================================================
58 68 0.46 126 P2 TWD 20 AV5 +0.00 TEC TEH 3
HOT 610HS I331 69 43 0.59 120 P2 TWD 23 AV3 -0.02 TEC TEH 2
HOT 610HS I309 71 79 0.48 100 P2 TWD 21 AV3 +0.00 TEC TEH 5
HOT 610HS I081 75 83 0.94 111 P2 TWD 29 AV5 -0.02 TEC TEH 5
HOT 610HS I140 1.41 114 P2 TWD 34 AV4 +0.00 TEC TEH 5
HOT 610HS I140 1.04 115 P2 TWD 30 AV3 +0.00 TEC TEH 5
HOT 610HS I140 77 51 0.56 129 P2 TWD 22 AV3 -0.02 TEC TEH 2
HOT 610HS I424 77 77 0.90 117 P2 TWD 29 AV4 +0.00 TEC TEH 6
HOT 610HS I056 78 88 0.61 114 P2 TWD 24 AV4 -0.05 TEC TEH 6
HOT 610HS I226 79 47 0.62 120 P2 TWD 24 AV4 +0.02 TEC TEH 1
HOT 610HS I357 0.62 126 P2 TWD 24 AV3 -0.05 TEC TEH 1
HOT 610HS I357 79 53 0.80 108 P2 TWD 27 AV3 +0.00 TEC TEH 1
HOT 610HS I441 81 85 0.83 121 P2 TWD 27 AV3 -0.05 TEC TEH 6
HOT 610HS I181 0.52 116 P2 TWD 21 AV2 +0.00 TEC TEH 6
HOT 610HS I181 83 63 0.54 119 P2 TWD 22 AV5 -0.02 TEC TEH 1
HOT 610HS I594 85 65 0.63 116 P2 TWD 24 AV3 -0.02 TEC TEH 2
HOT 610HS I644 0.47 107 P2 TWD 20 AV2 -0.07 TEC TEH 2
HOT 610HS I644 85 81 0.48 118 P2 TWD 20 AV3 -0.02 TEC TEH 6
HOT 610HS I120 85 85 0.45 123 P2 TWD 20 AV3 -0.05 TEC TEH 6
HOT 610HS I182 86 84 0.86 118 P2 TWD 28 AV3 -0.02 TEC TEH 5
HOT 610HS I154 1.02 118 P2 TWD 30 AV4 +0.00 TEC TEH 5
HOT 610HS I154 87 79 0.52 112 P2 TWD 22 AV3 -0.02 TEC TEH 5
HOT 610HS I085 88 68 0.52 123 P2 TWD 22 AV3 -0.02 TEC TEH 3
HOT 610HS I323 93 65 0.51 118 P2 TWD 21 AV4 +0.05 TEC TEH 2
HOT 610HS I646 95 73 0.52 121 P2 TWD 21 AV3 +0.00 TEC TEH 3
HOT 610HS I405 98 68 1.03 123 P2 TWD 30 AV5 +0.00 TEC TEH 4
HOT 610HS I322 0.94 118 P2 TWD 29 AV4 +0.00 TEC TEH 4
HOT 610HS I322 98 84 0.83 116 P2 TWD 27 AV2 -0.05 TEC TEH 5
HOT 610HS I151 99 65 1.33 120 P2 TWD 33 AV5 -0.05 TEC TEH 1
HOT 610HS I629 102 66 0.46 122 P2 TWD 20 AV5 -0.02 TEC TEH 1
HOT 610HS I634 104 64 0.80 112 P2 TWD 27 AV6 -0.02 TEC TEH 2
HOT 610HS I623 1.46 119 P2 TWD 34 AV5 -0.02 TEC TEH 2
HOT 610HS I623 106 64 0.68 118 P2 TWD 25 AV5 -0.02 TEC TEH 1
HOT 610HS I603 109 61 1.55 111 P2 TWD 35 AV6 -0.07 TEC TEH 2
HOT 610HS I588 0.71 123 P2 TWD 26 AV5 -0.02 TEC TEH 2
HOT 610HS I588 111 71 0.67 111 P2 TWD 25 AV6 +0.02 TEC TEH 3
HOT 610HS I378 0.74 119 P2 TWD 26 AV5 -0.02 TEC TEH 3
HOT 610HS I378 Total Tubes : 27 Total Records: 37
NOZZLE MANWAY 10 10 20 20 30 30 40 40 50 50 60 60 70 70 80 80 90 90 100 100 110 110 10 20 30 40 50 60 70 80 90 100 110 120 130 Ameren: S/G B HOT AREVA SCALE: 0.084494 X Wed May 04 08:56:54 2022 GROUP TUBES Previously Plugged 6
AVB TWD 20-39%
17 S/G B HOT PRIMARY FACE TOTAL TUBES: 5872 SELECTED TUBES: 23 OUT OF SERVICE (#): NA Framatome - FDMS map module Version 16.0 Ameren - Callaway Unit 1 1R25 - 04/22 AVB Wear 20% - 39%
Framatome Inc 05/04/22 08:55:51 Customer: Ameren Plant: Callaway Unit: 1 Component: S/G B Page 2 of 2 AVB Wear 20% - 39%
QUERY: QueryM1[1].qry ROW COL VOLTS DEG CHAN IND %TW LOCATION EXT EXT UTIL 1 UTIL 2 UTIL 3 CAL LEG PROBE IDX
=====================================================================================
68 58 0.58 126 P2 TWD 23 AV3 -0.02 TEC TEH 6 HOT 610HS I127 0.52 118 P2 TWD 21 AV4 -0.02 TEC TEH 6 HOT 610HS I127 76 68 0.62 126 P2 TWD 24 AV4 -0.02 TEC TEH 7 HOT 610HS I402 0.80 126 P2 TWD 27 AV3 -0.05 TEC TEH 7 HOT 610HS I402 0.77 120 P2 TWD 26 AV2 -0.05 TEC TEH 7 HOT 610HS I402 77 67 0.45 127 P2 TWD 20 AV6 -0.12 TEC TEH 6 HOT 610HS I265 1.23 121 P2 TWD 32 AV4 +0.05 TEC TEH 6 HOT 610HS I265 0.69 122 P2 TWD 25 AV3 -0.05 TEC TEH 6 HOT 610HS I265 77 73 0.45 122 P2 TWD 20 AV4 +0.02 TEC TEH 10 HOT 610HS I033 0.89 126 P2 TWD 28 AV3 +0.00 TEC TEH 10 HOT 610HS I033 77 87 0.54 127 P2 TWD 22 AV4 -0.02 TEC TEH 9 HOT 610HS I236 0.77 127 P2 TWD 26 AV3 -0.02 TEC TEH 9 HOT 610HS I236 78 66 0.74 91 P2 TWD 26 AV3 -0.05 TEC TEH 5 HOT 610HS I246 81 67 0.73 126 P2 TWD 26 AV5 -0.02 TEC TEH 6 HOT 610HS I266 0.89 115 P2 TWD 28 AV4 -0.02 TEC TEH 6 HOT 610HS I266 0.69 105 P2 TWD 25 AV3 -0.05 TEC TEH 6 HOT 610HS I266 83 75 0.44 95 P2 TWD 20 AV3 -0.02 TEC TEH 10 HOT 610HS I063 85 77 0.51 108 P2 TWD 21 AV4 -0.02 TEC TEH 9 HOT 610HS I089 1.35 115 P2 TWD 33 AV3 -0.02 TEC TEH 9 HOT 610HS I089 0.52 69 P2 TWD 22 AV2 -0.05 TEC TEH 9 HOT 610HS I089 86 64 0.92 126 P2 TWD 29 AV4 +0.02 TEC TEH 6 HOT 610HS I011 0.99 119 P2 TWD 30 AV3 -0.02 TEC TEH 6 HOT 610HS I011 88 88 1.72 123 P2 TWD 36 AV4 +0.00 TEC TEH 10 HOT 610HS I273 1.18 122 P2 TWD 32 AV3 -0.05 TEC TEH 10 HOT 610HS I273 0.45 123 P2 TWD 20 AV2 -0.07 TEC TEH 10 HOT 610HS I273 89 63 1.22 134 P2 TWD 32 AV3 -0.07 TEC TEH 6 HOT 610HS I205 0.53 141 P2 TWD 22 AV2 -0.02 TEC TEH 6 HOT 610HS I205 89 73 0.54 107 P2 TWD 22 AV4 -0.02 TEC TEH 10 HOT 610HS I030 90 60 0.58 119 P2 TWD 23 AV3 -0.02 TEC TEH 5 HOT 610HS I154 95 57 0.99 129 P2 TWD 30 AV5 -0.07 TEC TEH 6 HOT 610HS I110 1.53 124 P2 TWD 35 AV4 +0.02 TEC TEH 6 HOT 610HS I110 0.66 140 P2 TWD 24 AV3 -0.07 TEC TEH 6 HOT 610HS I110 95 79 0.47 143 P2 TWD 20 AV3 +0.02 TEC TEH 10 HOT 610HS I127 97 69 0.73 99 P2 TWD 26 AV3 -0.07 TEC TEH 8 HOT 610HS I417 Total Tubes : 17 Total Records: 34
NOZZLE MANWAY 10 10 20 20 30 30 40 40 50 50 60 60 70 70 80 80 90 90 100 100 110 110 10 20 30 40 50 60 70 80 90 100 110 120 130 Ameren: S/G C HOT AREVA SCALE: 0.084494 X Wed May 04 08:58:44 2022 GROUP TUBES Previously Plugged 26 AVB TWD 20-39%
35 S/G C HOT PRIMARY FACE TOTAL TUBES: 5872 SELECTED TUBES: 61 OUT OF SERVICE (#): NA Framatome - FDMS map module Version 16.0 Ameren - Callaway Unit 1 1R25 - 04/22 AVB Wear 20% - 39%
Framatome Inc 05/04/22 08:59:38 Customer: Ameren Plant: Callaway Unit: 1 Component: S/G C Page 2 of 2 AVB Wear 20% - 39%
QUERY: QueryM1[1].qry ROW COL VOLTS DEG CHAN IND %TW LOCATION EXT EXT UTIL 1 UTIL 2 UTIL 3 CAL LEG PROBE IDX
=====================================================================================
64 62 0.51 123 P2 TWD 21 AV5 -0.05 TEC TEH 1 HOT 610HS I557 1.15 122 P2 TWD 31 AV4 -0.02 TEC TEH 1 HOT 610HS I557 0.56 122 P2 TWD 22 AV3 -0.05 TEC TEH 1 HOT 610HS I557 73 63 0.85 102 P2 TWD 28 AV5 +0.00 TEC TEH 1 HOT 610HS I577 0.67 134 P2 TWD 25 AV4 +0.00 TEC TEH 1 HOT 610HS I577 77 67 0.89 133 P2 TWD 28 AV3 +0.00 TEC TEH 2 HOT 610HS I670 0.54 133 P2 TWD 22 AV2 -0.05 TEC TEH 2 HOT 610HS I670 77 81 0.45 128 P2 TWD 20 AV2 +0.00 TEC TEH 12 HOT 610HS I044 78 66 0.50 145 P2 TWD 21 AV2 -0.05 TEC TEH 2 HOT 610HS I652 79 51 0.46 120 P2 TWD 20 AV3 -0.05 TEC TEH 2 HOT 610HS I423 83 67 0.65 88 P2 TWD 24 AV3 -0.02 TEC TEH 1 HOT 610HS I635 87 71 0.66 126 P2 TWD 24 AV5 +0.00 TEC TEH 8 HOT 610HS I090 0.57 121 P2 TWD 23 AV3 -0.07 TEC TEH 8 HOT 610HS I090 87 83 0.73 129 P2 TWD 26 AV4 +0.00 TEC TEH 12 HOT 610HS I054 88 70 0.63 132 P2 TWD 24 AV5 -0.07 TEC TEH 8 HOT 610HS I050 89 65 0.47 143 P2 TWD 20 AV3 -0.02 TEC TEH 2 HOT 610HS I636 89 67 0.94 133 P2 TWD 29 AV5 -0.02 TEC TEH 2 HOT 610HS I667 0.84 138 P2 TWD 28 AV4 +0.00 TEC TEH 2 HOT 610HS I667 0.54 148 P2 TWD 22 AV3 -0.05 TEC TEH 2 HOT 610HS I667 89 69 0.61 132 P2 TWD 24 AV4 -0.05 TEC TEH 8 HOT 610HS I030 1.26 122 P2 TWD 33 AV3 -0.02 TEC TEH 8 HOT 610HS I030 89 75 0.94 111 P2 TWD 29 AV3 +0.00 TEC TEH 10 HOT 610HS I066 90 56 1.05 114 P2 TWD 30 AV3 +0.00 TEC TEH 2 HOT 610HS I499 0.53 116 P2 TWD 22 AV2 -0.02 TEC TEH 2 HOT 610HS I499 91 51 0.87 113 P2 TWD 28 AV3 -0.02 TEC TEH 2 HOT 610HS I420 91 71 0.48 130 P2 TWD 21 AV5 -0.02 TEC TEH 8 HOT 610HS I091 91 73 0.49 123 P2 TWD 21 AV3 -0.02 TEC TEH 9 HOT 610HS I025 91 75 0.77 125 P2 TWD 27 AV6 +0.00 TEC TEH 9 HOT 610HS I069 0.49 113 P2 TWD 21 AV5 -0.02 TEC TEH 9 HOT 610HS I069 93 65 0.54 143 P2 TWD 22 AV2 -0.05 TEC TEH 2 HOT 610HS I635 93 73 0.48 114 P2 TWD 21 AV4 +0.05 TEC TEH 10 HOT 610HS I025 94 66 0.91 134 P2 TWD 29 AV5 -0.02 TEC TEH 2 HOT 610HS I656 0.79 139 P2 TWD 27 AV4 +0.00 TEC TEH 2 HOT 610HS I656 1.13 123 P2 TWD 31 AV3 -0.02 TEC TEH 2 HOT 610HS I656 95 65 0.48 98 P2 TWD 20 AV5 +0.00 TEC TEH 1 HOT 610HS I602 0.63 123 P2 TWD 24 AV4 +0.05 TEC TEH 1 HOT 610HS I602 96 74 0.81 116 P2 TWD 27 AV2 -0.05 TEC TEH 9 HOT 610HS I031 97 67 0.84 130 P2 TWD 28 AV2 -0.05 TEC TEH 2 HOT 610HS I665 97 69 1.71 114 P2 TWD 36 AV5 -0.02 TEC TEH 8 HOT 610HS I032 1.67 123 P2 TWD 36 AV4 +0.02 TEC TEH 8 HOT 610HS I032 97 83 0.45 133 P2 TWD 20 AV4 +0.00 TEC TEH 9 HOT 610HS I140 99 73 0.59 121 P2 TWD 23 AV3 +0.00 TEC TEH 10 HOT 610HS I026 0.62 132 P2 TWD 24 AV5 +0.00 TEC TEH 10 HOT 610HS I026 0.67 121 P2 TWD 25 AV4 +0.00 TEC TEH 10 HOT 610HS I026 104 74 0.48 122 P2 TWD 21 AV4 +0.02 TEC TEH 10 HOT 610HS I029 104 82 0.77 122 P2 TWD 27 AV4 +0.02 TEC TEH 10 HOT 610HS I132 105 71 0.46 122 P2 TWD 20 AV3 -0.02 TEC TEH 8 HOT 610HS I096 107 69 0.57 130 P2 TWD 23 AV6 +0.02 TEC TEH 8 HOT 610HS I036 1.48 120 P2 TWD 34 AV5 +0.00 TEC TEH 8 HOT 610HS I036 0.73 128 P2 TWD 26 AV4 +0.00 TEC TEH 8 HOT 610HS I036 110 70 1.00 119 P2 TWD 30 AV3 -0.02 TEC TEH 8 HOT 610HS I040 110 72 1.51 126 P2 TWD 35 AV6 +0.00 TEC TEH 8 HOT 610HS I102 0.81 129 P2 TWD 27 AV5 +0.00 TEC TEH 8 HOT 610HS I102 111 67 0.46 102 P2 TWD 20 AV4 -0.05 TEC TEH 1 HOT 610HS I629 Total Tubes : 35 Total Records: 54
NOZZLE MANWAY 10 10 20 20 30 30 40 40 50 50 60 60 70 70 80 80 90 90 100 100 110 110 10 20 30 40 50 60 70 80 90 100 110 120 130 Ameren: S/G D HOT AREVA SCALE: 0.084494 X Wed May 04 09:02:41 2022 GROUP TUBES Previously Plugged 3
AVB TWD 20-39%
5 S/G D HOT PRIMARY FACE TOTAL TUBES: 5872 SELECTED TUBES: 8 OUT OF SERVICE (#): NA Framatome - FDMS map module Version 16.0 Ameren - Callaway Unit 1 1R25 - 04/22 AVB Wear 20% - 39%
Framatome Inc 05/04/22 09:00:46 Customer: Ameren Plant: Callaway Unit: 1 Component: S/G D Page 2 of 2 AVB Wear 20% - 39%
QUERY: QueryM1[1].qry ROW COL VOLTS DEG CHAN IND %TW LOCATION EXT EXT UTIL 1 UTIL 2 UTIL 3 CAL LEG PROBE IDX
=====================================================================================
70 54 0.60 127 P2 TWD 23 AV5 +0.00 TEC TEH 15 HOT 610HS I188 76 60 0.95 114 P2 TWD 29 AV5 -0.05 TEC TEH 14 HOT 610HS I273 0.64 118 P2 TWD 24 AV4 -0.02 TEC TEH 14 HOT 610HS I273 88 72 0.67 102 P2 TWD 25 AV6 -0.02 TEC TEH 5 HOT 610HS I190 90 80 0.61 117 P2 TWD 24 AV5 -0.05 TEC TEH 6 HOT 610HS I018 99 71 0.68 96 P2 TWD 25 AV2 -0.05 TEC TEH 5 HOT 610HS I174 Total Tubes : 5 Total Records: 6