WM 04-0046, Results of the Twelfth Steam Generator Tube Inservice Inspection
| ML043080306 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 10/27/2004 |
| From: | Muench R Wolf Creek |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| WM 04-0046 | |
| Download: ML043080306 (34) | |
Text
WNLF CREEK
'NUCLEAR OPERATING CORPORATION Richard A Muench President and Chief Executive Officer October 27, 2004 WM 04-0046 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555
Subject:
Docket No. 50-482: Results of the Twelfth Steam Generator Tube Inservice Inspection Gentlemen:
The attached Steam Generator Tube Inspection Report is submitted in accordance with Wolf Creek Generating Station (WCGS) Technical Specification 5.6.10.b. This report provides the results of Wolf Creek Generating Station's twelfth steam generator tube inservice inspection.
The Steam Generator Tube Inspection Report includes the number and extent of tubes inspected, location and percent of wall-thickness penetration for each indication of an imperfection, and identification of tubes plugged. Attachment 1 provides the Steam Generator Tube Inspection Report.
No commitments are contained in this correspondence.
If you have any questions concerning this matter, please contact me at (620) 364-4000, or Mr.
Kevin Moles at (620) 364-4126.
Very truly yours, RichardA. Muench RAM/rIg Attachment cc: J. N. Donohew (NRC), w/a D. N. Graves (NRC), w/a B. S. Mallett (NRC), w/a Senior Resident Inspector (NRC), w/a
-0 %-./ni 4"?
P.O. Box 411 / Burlington, KS 66839 / Phone: (620) 364.8831 An Equal Opportunity Employer M/FiHCVET to WM 04-0046 Page 1 of 33 STEAM GENERATOR TUBE INSPECTION REPORT This report is being submitted pursuant to Technical Specification 5.6.10.b to report the results of the twelfth steam generator tube inservice inspection. Additional information established by NEI 97-06, uSteam Generator Program Guidelines," is also included with this report.
Summary The twelfth steam generator tube inservice inspection was completed by Westinghouse Electric Corporation on October 31, 2003, during Refueling Outage 13.
Section 1 of this report describes the inspection programs, which were completed in Steam Generators "A" and "D" including:
100% bobbin coil except the U-bend portion of row 1 and row 2, 55% Rotating Pancake Coil (RPC) top of tube sheet on the hot leg side, 50% RPC row 1 and 2 U-bends, and a special interest program. The inspection results, which include the location and percent of wall-thickness penetration for each indication of an imperfection, are listed in Section 2 of this report.
Mechanical plugging was necessary due to indications found during the inservice inspection.
Of the 5600 tubes inspected in Steam Generator "A", three tubes were plugged due to anti-vibration bar (AVB) wear indications that exceeded the 40 percent through wall Technical Specification acceptance criteria. Sixteen of the 5546 tubes inspected in Steam Generator "D" were plugged due to AVB wear indications that exceeded the 40 percent through wall Technical Specification acceptance criteria. In addition, one tube in Steam Generator "D" was plugged due to an obstruction in the tube. Identification of tubes plugged, as well as the total number and percentage of tubes plugged to date for each steam generator, is included in Section 3 of this report.
The results of the twelfth steam generator tube inservice inspection have been classified as Category C-2. Category C-2 is defined in Technical Specification 5.5.9 as inspection results that indicate "one or more tubes, but not more than 1% of the total tubes inspected are defective, or between 5% and 10% of the total tubes inspected are degraded tubes." Steam Generator "A" had 0.05 percent defective tubes and 1.50 percent degraded tubes.
Steam Generator "D" had 0.31 percent defective tubes and 2.72 percent degraded tubes.
to WM 04-0046 Page 2 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Technical Specification Required Reports Section 1:
Number and Extent of Tubes Inspected.
A. Steam Generator "A": A total of 5600 tubes were inspected B. Steam Generator UD": A total of 5546 tubes were inspected Steam Steam Test Extent Generator A Generator D Bobbin Full Length 5356 5302 Bobbin Cold Leg Straight Length 244 244 Bobbin Hot Leg Straight Length 244 244 RPC Hot Leg Top of Tubesheet (+/- 3 inches) 3281 3240 RPC Row 1 and 2 U-bends 122 122 A Special Interest +Point RPC program included all bobbin "I" codes (signals that were new or changed after historical review). All 5.00 volts or greater dents on the hot leg side were examined. A 5% sample of 'H" codes and 5% sample of "S" codes were examined. The UH" codes are primarily due to manufacturing burnish mark (MBM) signals and small (<2 volt) dent signals that have rotated into the flaw plane. These are resolved by history look-back and are monitored to ensure characteristics are not changing. The "s" codes are signals that have been +Point examined for diagnostic purposes at some previous time and were then determined to be non-degradation. These signals are tracked to detect signal change and are resolved by history look-back.
RPC examinations were also performed to track Flow Distribution Baffle wear indications. None of the freespan or support plate indications tested with RPC were reported as degradation.
The following are the indication totals for each special interest category.')
Indication/Signals Description SG A SG D DNG Freespan Ding (Total/>5V) 185/48 244/60 DNT Dents at Structures (Total/>5V) 354/127 149/53(Z)
FSH/FSS Freespan signals history / RPC (Includes 601/9 580/2 burnish marks)
PCT AVB% Wear Indications (Bobbin Sizing) 430 72313' PLP Possible Loose Parts 6(4) 4)
PVN Permeability Variation 2
3 VOL Volumetric Indications - +Point 1
5 WAR Wear (non-crack like) at FDB 0
18
- 1. Numbers may differ from EC database due to duplicate entries in database
- 2. Includes DDS (distorted dent cleared by +Point)
- 3. Excludes PCT calls for volumetric indications other than AVB wear
- 4. All from +Point, involving 5 tubes
- 5. Five indications are in the database, 4 from bobbin, I from +Point. The +Point PLP is interpreted as the same indication as the bobbin indication on the tube.
to WM 04-0046 Page 3 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Section 2:
Location and Percent of Wall Thickness Penetration for Each Indication of an Imperfection.
The following tables contain all tubes inspected that had a percent through wall loss indication.
The key below provides a description of the abbreviations used in the following tables.
- H, #C
(# = number) of Support Plate(s) Hot Leg or Cold Leg Side AV#
Anti-Vibration Bar (# = number)
TSH Tube Sheet Hot Leg FBC Flow Baffle Cold Leg Page 4 of 33 to WM 04-0046 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "A" Row 25 27 30 38 40 39 45 45 45 30 45 45 48 48 38 38 45 45 45 50 41 44 41 41 41 45 45 45 45 45 47 47 47 47 34 45 50 48 48 33 33 33 35 45 Column 8
10 10 19 20 25 25 25 25 26 26 26 27 27 29 29 30 30 30 30 31 31 32 32 32 32 32 32 32 32 32 32 32 32 33 33 34 35 35 36 36 36 36 36 Indication
(% of Wall Thickness) 11 10 15 14 14 16 22 21 31 12 24 25 14 13 17 14 20 23 18 12 19 17 11 19 16 15 23 34 26 17 17 33 25 14 17 25 17 15 21 18 15 10 16 21 Inch (+/-)
Location From Location AV6 AV5 AV5 AV4 AV5 AV2 AV2 AV4 AV5 AV6 AV3 AV4 AV4 AV5 AV2 AV3 AV2 AV3 AV5 AV5 AV4 AV4 AV2 AV3 AV4 AV2 AV3 AV4 AV5 AV6 AV2 AV3 AV4 AV5 AV4 AV4 AV2 AV4 AV5 AV2 AV3 AV4 AV5 AV2 0.02
-0.22
-0.06 0.03 0.00 0.06 0.00 0.03
-0.16
-0.08
-0.06
-0.11 0.05 0.00 0.00 0.00 0.09 0.00
-0.03
-0.05 0.08 0.08
-0.12 0.00
-0.11
-0.09
-0.20 0.00
-0.22
-0.08
-0.06 0.00
-0.08
-0.05 0.03 0.21 0.11
-0.03 0.03 0.17 0.00 0.00 0.00 0.00 Page 5 of 33 to WM 04-0046 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "A" Row 36 45 45 45 45 48.
30 30 40 43 43 43 43 45 48 39 39 44 44 44 44 38 38 41 41 41 44 45 45 46 46 46 27 27 28 28 38 38 40 40 44 44 45 45 Column 37 37 37 37 37 37 38 38 38 38 38 38 38 38 38 39 39 39 39 39 39 40 40 40 40 40 40 40 40 40 40 40 41 41 41 41 41 41 41 41 41 41 41 41 Indication
(% of Wall Thickness) 13 19 25 15 13 16 16 10 17 17 35 18 15 18 11 18 20 18 16 31 23 16 18 15 16 19 13 18 23 28 33 28 21 23 17 17 28 23 18 17 26 19 17 33 Inch (+/-)
Location From Location AV3 AV2 AV3 AV4 AV6 AV3 AV5 AV6 AV4 AV2 AV3 AV4 AV5 AV3 TSH AV3 AV5 AV2 AV3 AV4 AV5 AV2 AV3 AV2 AV5 AV6 AV3 AV3 AV4 AV2 AV4 AV5 AV2 AV5 AV2 AV5 AV3 AV4 AV3 AV4 AV5 AV6 AV2 AV3 0.11 0.00 0.00 0.00
-0.19 0.08 0.30 0.00 0.00
-0.15 0.23 0.03
-0.19 0.12
-0.08 0.00
-0.14 0.20
-0.06
-0.11 0.00 0.11 0.00 0.00 0.00 0.05 0.00
-0.09
-0.03 0.08 0.11 0.05 0.17 0.06 0.08 0.14 0.00
-0.14 0.03
-0.16 0.25
-0.14 0.09 0.00 Page 6 of 33 to WM 04-0046 STEAM GENERATOR TUBE INSPECTION REPORT Tube indications on Steam Generator "A" Row 45 45 45 27 30 36 36 36 36 40 40 40 56 28 36 41 41 41 41 56 56 57 35 38 41 41 41 41 44 44 44 44 44 28 28 35 35 36 36 36 36 36 37 39 Column 41 41 41 42 42 42 42 42 42 42 42 42 42 43 43 43 43 43 43 43 43 43 44 44 44 44 44 44 44 44 44 44 44 45 45 45 45 45 45 45 45 45 45 45 Indication
(% of Wall Thickness) 28 24 21 17 15 19 16 17 19 16 22 15 12 18 23 16 14 23 17 11 12 11 13 12 15 22 18 14 35 27 24 27 23 27 19 18 21 23 18 19 25 23 17 33 Inch (+/-)
Location From Location AV4 AV5 AV6 AV5 AV2 AV2 AV3 AV4 AV5 AV3 AV4 AV5 AV6 AV2 AV2 AV3 AV4 AV5 AV6 AV3 AV5 AV5 AV5 AV5 AV2 AV3 AV4 AV5 AV2 AV3 AV4 AV5 AV6 AV5 AV6 AV1 AV2 AV2 AV3 AV4 AV5 AV6 AV6 AV4 0.00 0.03 0.08 0.08 0.03 0.03
-0.20
-0.03 0.05 0.14 0.00 0.00 0.00 0.00
-0.06 0.03
-0.03 0.00 0.19 0.11
-0.08
-0.08 0.00 0.00
-0.03 0.00 0.45 0.00 0.00 0.00 0.00 0.00 0.21 0.06 0.03 0.00 0.00
-0.06
-0.14
-0.08
-0.14 0.08 0.00 0.19 Page 7 of 33 to WM 04-0046 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "A" Row 40 40 41 43 44 44 44 56 26 28 28 38 38 38 38 39 39 39 40 40 40 40 40 43 43 43 43 44 44 44 44 50 34 34 34 36 37 37 37 39 39 39 40 40 Column 45 45 45 45 45 45 45 45 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 47 47 47 47 47 47 47 47 47 47 47 47 Indication
(% of Wall Thickness) 15 16 17 13 20 15 16 14 15 26 16 18 16 17 36 28 20 19 35 41 38 40 19 13 14 30 13 16 18 17 15 20 24 20 24 11 20 28 20 13 14 13 17 28 Inch (+/-)
Location From Location AV3 AV4 AV6 AV3 AV3 AV4 AV5 AV4 AV2 AV5 AV6 AV1 AV2 AV3 AV4 AV2 AV3 AV4 AV2 AV3 AV4 AV5 AV6 AV2 AV3 AV4 AV5 AV2 AV3 AV4 AV5 AV3 AV2 AV3 AV5 AV3 AV3 AV4 AV5 AV2 AV4 AV5 AV1 AV2 0.23 0.05
-0.08 0.32
-0.03
-0.11
-0.08 0.16 0.00
-0.30 0.00 0.00 0.00 0.00 0.00 0.00 0.00
-0.05 0.00 0.00 0.21 0.00 0.00 0.00 0.08 0.00
-0.05 0.19 0.22
-0.05 0.00
-0.03 0.17 0.00
-0.08
-0.09
-0.06 0.27
-0.14
-0.20
-0.03
-0.05
-0.14
-0.06 to WM 04-0046 Page 8 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "A" Row 40 40 40 44 58 36 37 38 38 38 38 40 22 30 30 30 36 36 36 40 40 40 57 36 36 36 36 36 38 39 27 35 49 49 49 49 38 38 38 40 40 40 40 40 Column 47 47 47 47 47 48 48 48 48 48 48 48 49 49 49 49 49 49 49 49 49 49 49 50 50 50 50 50 50 50 51 51 51 51 51 51 52 52 52 52 52 52 52 52 Indication
(% of Wall Thickness) 30 23 15 17 10 18 16 26 23 16 15 18 16 18 41 36 21 15 19 17 18 10 11 16 18 20 16 12 18 15 12 15 27 21 23 14 20 18 14 19 16 21 28 17 Inch (+/-)
Location From Location AV3 AV4 AV5 AV2 AV3 AV5 AV2 AV2 AV3 AV4 AV5 AV5 AV2 AV1 AV2 AV5 AV2 AV3 AV4 AV2 AV3 AV4 AV6 AV2 AV3 AV4 AV5 AV6 AV4 AV4 AV5 AV1 AV2 AV4 AV5 AV6 AV3 AV4 AV5 AV2 AV3 AV4 AV5 AV6
-0.11 0.00 0.05
-0.09 0.00 0.00 0.00 0.00 0.08 0.00 0.16 0.00
-0.09 0.25 0.23 0.25 0.17 0.00 0.05
-0.17
-0.28
-0.27 0.00 0.11
-0.11 0.03 0.19
-0.35 0.16 0.03
-0.17
-0.12 0.14
-0.03
-0.05
-0.05
-0.03
-0.11 0.13 0.36 0.00 0.08 0.16
-0.13 Page 9 of 33 to WM 04-0046 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "A" Row 43 33 34 40 42 42 49 49 35 36 36 41 42 18 38 38 38 42 35 44 44 44 44 19 31 40 40 40 40 40 41 41 43 43 43 43 39 41 41 41 44 44 44 40 Column 52 53 53 53 53 53 53 53 54 54 54 54 54 55 55 55 55 55 56 56 56 56 56 58 58 58 58 58 58 58 58 58.
58 58 58 58 59 59 59 59 59 59 59 60 Indication
(% of Wall Thickness) 18 18 17 14 18 24 16 14 18 22 11 24 21 18 20 28 30 12 17 20 25 22 19 18 17 14 34 17 28 12 23 20 28 20 20 16 16 19 25 19 23 22 15 38 Inch (+/-)
Location From Location AV2 AV2 AV2 AV3 AV2 AV5 AV5 AV6 AV2 AV3 AV6 AV5 AV5 AV1 AV2 AV3 AV4 AV4 AV2 AV2 AV3 AV4 AV5 AV1 AV2 AV2 AV3 AV4 AV5 AV6 AV2 AV3 AV2 AV3 AV4 AV5 AV5 AV2 AV3 AV4 AV2 AV3 AV6 AV3 0.00
-0.06
-0.15 0.00
-0.15 0.00 0.08
-0.05 0.03 0.23 0.00
-0.13 0.05 0.19 0.09 0.00 0.00 0.00
-0.03 0.25 0.00 0.03 0.03 0.00
-0.11 0.06 0.03 0.00 0.00
-0.05 0.00 0.06 0.25 0.12 0.08
-0.08 0.11 0.12 0.00 0.00 0.33 0.25 0.00 0.00 to WM 04-0046 Page 10 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "A" Row 40 40 44 44 44 34 42 36 36 37 37 37 57 51 49 49 40 40 40 40 50 27 37 37 37 37 37 39 40 40 40 40 40 41 41 41 41 41 42 44 44 44 44 39 Column 60 60 60 60 60 61 61 63 63 64 64 64 64 66 68 68 70 70 70 70 70 71 74 74 74 74 74 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 76 Indication
(% of Wall Thickness) 27 24 21 18 14 23 20 12 13 17 15 15 19 19 18 15 26 22 14 11 27 13 13 29 29 27 10 17 26 13 27 18 28 17 18 16 27 14 17 16 14 19 16 23 Inch (+/-)
Location From Location AV4 AV5 AV3 AV4 AV5 AV4 AV2 AV2 AV3 AV2 AV3 AV4 AV2 AV2 AV2 AV3 AV3 AV4 AV5 AV6 AV2 AV2 AVI AV3 AV4 AV5 AV6 AV3 AV1 AV2 AV3 AV4 AV5 AV2 AV3 AV4 AV5 AV6 AVI AV3 AV4 AV5 AV6 AV2 0.00 0.00 0.11 0.03
-0.11 0.00 0.27
-0.11 0.00 0.06 0.00 0.00
-0.09
-0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
-0.41
-0.05 0.00
-0.05 0.00 0.06 0.14 0.32 0.14
-0.34
-0.19
-0.29 0.03 0.05
-0.11
-0.40
-0.17 0.00 0.13
-0.03
-0.37
-0.32 to WM 04-0046 Page 11 of33 I --
STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "A" Row 50 50 50 50 44 58 34 34 34 39 39 39 39 39 27 34 34 39 39 39 39 39 40 39 39 39 44 48 48 48 48 56 27 40 40 40 40 36 46 46 34 39 39 39 Column 76 76 76 76 77 77 78 78 78 78 79 79 79 79 80 80 80 80 80 80 80 80 80 81 81 81 81 81 81 81 81 81 82 82 82 82 82 83 83 83 84 84 84 84 Indication
(% of Wall Thickness) 26 25 46 37 19 11 16 14 20 17 15 21 13 15 16 12 18 24 25 25 18 38 17 19 18 18 15 23 18 17 37 14 17 16 13 13 15 20 17 19 19 10 30 32 Inch (+/-)
Location From Location AV2 AV3 AV4 AV5 AV4 AV6 AV2 AV3 AV5 AV3 AV3 AV4 AV5 AV6 AV5 AV1 AV2 AV2 AV3 AV4 AV5 AV6 AV2 AV2 AV4 AV5 AV2 AV2 AV3 AV4 AV5 AV5 AV5 AV2 AV3 AV4 AV5 AVI AVI AV2 AV3 AV1 AV2 AV3 0.00 0.00 0.00 0.00 0.05
-0.05
-0.06 0.00 0.08 0.00 0.11 0.05 0.03 0.13 0.03 0.28
-0.03
-0.08 0.03 0.08 0.03 0.13 0.03
-0.03 0.13
-0.03 0.14 0.17
-0.28 0.13
-0.24 0.03 0.03 0.00 0.00 0.00 0.00
-0.03 0.00
-0.06 0.00 0.00 0.14 0.17 to WM 04-0046 Page 12 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "A" Row 39 39 39 53 39 39 39 39 39 54 25 31 46 46 30 39 39 39 44 50 50 20 30 30 44 44 44 44 53 50 35 35 36 36 36 36 41 35 36 36 44 39 39 39 Column 84 84 84 84 85 85 85 85 85 85 86 86 86 86 87 87 87 87 87 87 87 88 88 88 89 89 89 89 89 90 91 91 91 91 91 91 91 92 92 92 92 93 93 93 Indication
(% of Wall Thickness) 22 24 22 14 19 33 35 25 18 17 14 22 15 14 18 14 29 17 15 19 22 14 19 16 18 24 20 21 17 29 13 22 20 24 11 17 15 16 11 17 18 13 28 16 Inch (+/-)
Location From Location AV4 AV5 AV6 AV5 AV2 AV3 AV4 AV5 AV6 AV5 AV5 AV5 AV1 AV2 AV5 AV2 AV4 AV6 AV2 AV4 AV5 AV6 AV2 AV5 AV3 AV4 AV5 AV6 AV3 AV5 AV1 AV4 AV2 AV4 AV5 AV6 AV6 AV3 AV2 AV5 AV4 AV2 AV3 AV5 0.10 0.10
-0.21 0.10 0.09 0.06 0.03
-0.13 0.03
-0.03 0.05 0.00 0.11
-0.08
-0.16 0.03 0.00 0.05 0.00
-0.03 0.03 0.00 0.14 0.23 0.03 0.08 0.13 0.11 0.00 0.00 0.00
-0.11
-0.03
-0.20
-0.14
-0.11 0.00 0.05
-0.08
-0.26
-0.14
-0.21
-0.26 0.22 to WM 04-0046 Page 13 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "A" Row 39 20 38 38 39 39 39 39 39 27 35 37 37 38 38 38 37 37 45 45 45 45 39 39 39 40 40 40 44 43 36 36 36 36 Column 94 95 95 95 95 95 95 96 96 97 97 97 97 98 98 99 100 100 100 100 100 100 101 101 101 102 102 102 102 103 110 110 110 110 Indication
(% of Wall Thickness) 14 14 15 19 16 19 12 16 17 18 17 12 15 18 24 23 12 15 11 13 15 15 12 17 10 17 17 16 11 14 13 24 30 17 Inch (+/-)
Location From Location AV5 AV6 AV4 AV5 AV3 AV4 AV5 AV3 AV4 AV2 AV4 AV3 AV5 AV3 AV4 AV4 AV3 AV4 AV1 AV2 AV3 AV4 AV3 AV4 AV5 AV3 AV4 AV5 AV1 AV3 AV3 AV4 AV5 AV6
-0.03 0.03 0.06
-0.11 0.00
-0.08
-0.14
-0.16
-0.03 0.00 0.06 0.03
-0.03
-0.03
-0.17
-0.03 0.00 0.29
-0.05 0.08 0.00 0.00 0.08
-0.20 0.06 0.03
-0.06 0.00 0.03
-0.16 0.00
-0.17 0.00
-0.14 to WM 04-0046 Page 14 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 27 27 29 29 29 30 30 32 32 33 33 33 32 32 33 33 33 33 33 33 33 34 32 32 33 33 33 35 33 35 36 36 36 37 37 37 37 38 38 35 35 37 37 37 37 Column 8
8 10 10 10 10 10 11 11 11 11 11 12 12 12 12 12 12 13 13 13 13 14 14 14 14 14 14 15 15 15 16 16 16 16 16 16 16 16 17 17 17 17 17 17 i
Indication
(% of Wall Thickness) 10 16 13 11 21 15 23 14 18 19 13 17 17 11 16 27 26 13 24 23 36 31 16 12 15 16 18 16 16 12 21 25 12 15 20 18 15 13 19 22 24 10 26 20 18 Inch (+/-)
Location From Location AV1 AV6 AV1 AV2 AV5 AV2 AV5 AV2 AV6 AV2 AV5 AV6 AV5 AV6 AV2 AV4 AV5 AV6 AV4 AV5 AV6 AV3 AV4 AV5 AV2 AV3 AV4 AV5 AV4 AV4 AV5 AV4 AV5 AV3 AV4 AV5 AV6 AV3 AV4 AV2 AV3 AV3 AV4 AV5 AV6 0.00 0.00 0.00
-0.46 0.03
-0.17 0.00 0.00
-0.13
-0.06 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.40 0.14 0.43 0.12 0.08
-0.06 0.00 0.00 0.10 0.06 0.00 0.06 0.00 0.00 0.00 to WM 04-0046 Page 15 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 38 37 38 38 38 39 39 33 37 37 37 38 38 38 38 38 39 39 39 39 40 40 41 41 41 41 41 41 37 39 39 40 40 41 41 41 41 31 37 38 38 39 40 41 38 Column 17 18 18 18 18 18 18 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 20 20 20 20 20 20 20 20 20 21 21 21 21 21 21 21 22 Indication
(% of Wall Thickness) 13 15 14 11 10 15 16 15 14 24 15 15 25 14 12 15 29 23 21 20 13 10 15 38 29 22 26 19 13 16 27 18 14 19 29 34 25 9
17 21 16 15 11 18 19 Inch (+/-)
Location From Location AV4 AV4 AV4 AV5 AV6 AV2 AV3 AV3 AVI AV3 AV4 AVI AV3 AV4 AV5 AV6 AV2 AV3 AV5 AV6 AV2 AV4 AVI AV2 AV3 AV4 AV5 AV6 AV2 AV2 AV3 AV4 AV6 AV3 AV4 AV5 AV6 TSH AV2 AV2 AV4 AV3 AV4 AV5 AV3
-0.03
-0.03 0.14 0.00 0.17 0.00
-0.06 0.00 0.00 0.00 0.00 0.03 0.00 0.00 0.37 0.00 0.00 0.00 0.00 0.00
-0.11 0.00 0.12 0.00 0.00 0.00 0.43 0.00 0.09 0.00 0.00 0.03
-0.06
-0.03 0.09
-0.17 0.17 0.08 0.21 0.00
-0.06 0.00
-0.06 0.03
-0.03 to WM 04-0046 Page 16 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 41 41 41 41 42 38 38 40 43 43 43 43 43 39 39 39 43 43 43 43 43 44 44 44 45 45 45 45 46 46 46 46 46 47 37 41 41 43 43 43 43 44 49 42 42 Column 22 22 22 22 22 23 23 23 23 23 23 23 23 24 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 26 27 27 27 27 27 27 27 27 28 28 Indication
(% of Wall Thickness) 22 26 25 19 18 17 16 17 17 20 38 32 24 19 16 12 16 26 25 13 19 21 21 18 13 21 34 32 19 20 37 28 23 22 19 15 14 17 30 17 16 13 24 17 14 Inch (+/-)
Location From Location AV2 AV3 AV5 AV6 AV5 AV5 AV6 AV5 AV1 AV2 AV4 AV5 AV6 AV4 AV3 AV5 AV2 AV3 AV4 AV5 AV6 AV3 AV4 AV5 AV2 AV3 AV5 AV6 AV1 AV2 AV3 AV4 AV5 AV4 AV2 AV4 AV5 AV2 AV3
- AV5 AV6 AV4 AV4 AV2 AV3 0.09 0.09 0.00
-0.03 0.06 0.00 0.00 0.00 0.00 0.03 0.00
-0.03 0.37 0.06 0.06 0.00 0.09
-0.09 0.00 0.06
-0.09
-0.38
-0.03 0.34 0.00 0.15 0.09 0.06 0.09
-0.12 0.03 0.00 0.06
-0.10 0.06 0.00 0.00 0.03
-0.15 0.03
-0.06 0.06 0.06 0.06 0.00 to WM 04-0046 Page 17 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 45 45 45 45 47 48 49 49 49 1
1 44 49 49 49 1
46 49 49 49 49 49 50 1
1 46 46 46 46 46 47 49 49 49 50 1
32 47 47 49 49 50 50 50 Column 28 28 28 28 28 28 28 28 28 29 29 29 29 29 29 30 30 30 30 30 30 30 30 31 31 31 31 31 31 31 31 31 31 31 31 32 32 32 32 32 32 32 32 32 32 Indication
(% of Wall Thickness) 15 17 26 19 21 15 18 39 38 7
7 18 15 18 15 6
17 32 32 14 19 22 20 7
6 11 19 23 29 24 25 18 22 18 16 8
5 14 21 23 19 13 18 15 24 Inch (+/-)
Location From Location AV2 AV3 AV5 AV6 AV5 AV5 AV4
.AV5 AV6 FBC FBH AV3 AV2 AV4 AV6 FBC AV3 AV2 AV3 AV4 AV5 AV6 AV6 FBC FBH AV1 AV2 AV3 AV4 AV5 AV5 AV3 AV5 AV6 AV4 FBC FBH AV3 AV4 AV5 AV3 AV4 AV2 AV3 AV4 0.12 0.06
-0.03 0.00 0.00 0.03 0.00 0.09 0.09
-0.25 0.25 0.00 0.13
-0.05 0.05 0.31
-0.12 0.03 0.03
-0.09 0.09 0.06
-0.06 0.34 0.25 0.00 0.00
-0.15 0.09 0.00 0.00 0.00 0.00 0.00 0.00
-0.20 0.03 0.15 0.06 0.09 0.09 0.00 0.09
-0.03 0.06 to WM 04-0046 Page 18 of 33 e *....
STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 50 1
1 37 37 47 47 47 47 48 48 52 33 35 48 48 48 45 53 53 54 43 39 39 39 39 41 49 49 49 49 51 52 52 52 52 52 52 52 52 52 52 52 52 43 Column 32 33 33 33 33 33 33 33 33 33 33 33 34 34 34 34 34 35 35 35 35 36 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 38 Indication
(% of Wall Thickness) 20 7
6 14 23 13 18 16 15 13 15 16 15 13 27 27 17 16 21 22 14 13 17 21 21 15 16 10 19 16 14 16 26 27 66 56 53 44 57 66 26 25 17 19 21 Inch (+/-)
Location From Location AV5 FBC FBH AV2 AV3 AV3 AV4 AV5 AV6 AV3 AV4 AV6 AV5 AV3 AV2 AV3 AV5 AV2 AV3 AV5 AV5 AV4 AV2 AV3 AV4 AV5 AV4 AV2 AV3 AV4 AV6 AV2
-AV1 AV1 AV2 AV2 AV3 AV3 AV4 AV4 AV5 AV5 AV6 AV6 AV2 0.03 0.22 0.25 0.00 0.00 0.06 0.00 0.00 0.00
-0.06 0.00 0.00 0.00
-0.06 0.06 0.00
-0.09 0.03 0.00 0.00
-0.03
-0.11 0.06 0.14
-0.08 0.06 0.19
-0.12 0.09 0.17
-0.04 0.06 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00
-0.14 0.08 0.00 0.03 to WM 04-0046 Page 19 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 43 43 46 49 45 46 48 48 48 48 48 49 52 52 52 38 38 41 41 39 39 39 39 42 42 42 42 42 51 51 51 37 41 43 45 47 47 47 39 39 39 39 41 41 41 Column 38 38 38 38 39 39 39 39 39 39 39 39 39 39 39 40 40 40 40 41 41 41 41 41 41 41 41 41 41 41 41 42 42 42 42 42 42 42 43 43 43 43 43 43 43 Indication
(% of Wall Thickness) 24 18 18 14 13 13 16 15 32 22 12 11 13 21 18 28 18 19 18 16 17 13 12 13 25 17 16 17 20 18 24 21 17 14 16 19 24 18 20 32 34 21 34 30 14 Inch (+/-)
Location From Location AV4 AV5 AV3 AV5 AV3 AV5 AV2 AV3 AV4 AV5 AV6 AV3 AV3 AV4 AV5 AV2 AV4 AV3 AV4 AV2 AV3 AV4 AV5 AV2 AV3 AV4 AV5 AV6 AVI AV2 AV3 AV4 AV4 AV5 AV2 AV4 AV5 AV6 AV2 AV3 AV4 AV5 AV2 AV3 AV4
-0.03 0.08 0.03 0.00 0.00
-0.03 0.09 0.00 0.14 0.22 0.08 0.00 0.28 0.25 0.11 0.00 0.11 0.42 0.06 0.23 0.00
-0.11
-0.03 0.00 0.00 0.11 0.11 0.03 0.00 0.00 0.00 0.00 0.06
-0.17 0.06 0.00 0.25 0.17 0.21 0.00 0.00
-0.17 0.00 0.00 0.25 to WM 04-0046 Page 20 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 41 43 45 45 45 45 42 42 43 43 33 37 37 37 37 37 46 46 44 44 45 45 45 41 41 41 41 50 50 50 44 44 44 44 49 50 50 50 50 50 50 50 50 50 50 Column 43 43 43 43 43 43 44 44 44 44 45 45 45 45 45 45 45 45 46 46 46 46 46 47 47 47 47 47 47 47 48 49 49 49 49 49 49 49 49 49 49 49 49 49 49 Indication
(% of Wall Thickness) 15 18 20 25 20 16 20 16 24 28 10 16 36 20 20 15 13 12 15 21 17 16 19 23 12 12 16 14 15 11 18 10 18 13 18 26 24 50 48 42 39 24 26 19 19 Inch (+/-)
Location From Location AV5 AV2 AV3 AV4 AV5 AV6 AV4 AV5 AV2 AV3 AV4 AV1 AV2 AV3 AV4 AV5 AV3 AV4 AV2 AV5 AV2 AV3 AV6 AV2 AV3 AV4 AV6 AV4 AV5 AV6 AV5 AV4 AV5 AV6 AV2 AV2 AV2 AV3 AV3 AV4 AV4 AV5 AV5 AV6 AV6 0.36 0.00
-0.18
-0.28 0.25 0.14
-0.03 0.03 0.00
-0.09 0.08 0.00 0.00 0.00 0.06 0.17 0.00 0.06
-0.12 0.08 0.21 0.18 0.08 0.00
-0.26
-0.19 0.06 0.00 0.19 0.08 0.00 0.03
-0.03 0.03
-0.09 0.00 0.00
-0.09 0.00
-0.06 0.00 0.00
-0.03
-0.19 0.00 to WM 04-0046 Page 21 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 58 40 40 40 48 48 48 48 51 52 52 52 50 50 50 50 41 41 41 44 52 52 25 25 36 37 37 33 35 35 35 45 45 45 45 45 39 39 41 41 45 45 45 48 49 Column 49 50 50 50 50 50 50 50 50 50 50 50 51 51 51 51 52 52 52 52 52 52 53 53 53 53 53 54 54 54 54 54 54 54 54 54 55 55 55 55 55 55 55 55 55 Indication
(% of Wall Thickness) 18 21 22 25 16 32 31 32 12 13 15 15 31 17 13 10 16 13 18 16 22 20 12 12 15 12 18 16 15 18 20 23 30 22 26 14 18 16 19 21 15 15 26 16 16 Inch (+/-)
Location From Location AVI AV3 AV4 AV5 AV1 AV3 AV4 AV5 AV1 AV2 AV3 AV5 AV2 AV4 AV5 AV6 AV2 AV3 AV4 AV2 AV2 AV3 AV2 AV5 AV2 AV4 AV5 AV2 AV3 AV4 AV5 AV2 AV3 AV4 AV5 AV6 AV1 AV4 AV3 AV4 AV2 AV3 AV4 AV3 AV2 0.27 0.08 0.02 0.19 0.00
-0.03 0.00 0.06 0.00 0.00 0.00 0.00
-0.06 0.03
-0.11
-0.28 0.00 0.00 0.00 0.00 0.00 0.00 0.03
-0.22
-0.26
-0.17 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
-0.11
-0.06
-0.03
-0.14 0.00 0.00 0.03
-0.03 0.20 to WM 04-0046 Page 22 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 49 49 49 49 50 50 50 50 34 34 44 45 45 45 45 45 45 50 50 50 50 35 50 50 50 50 45 45 45 45 45 45 50 50 50 50 35 48 48 48 48 48 33 33 35 Column 55 55 55 55 55 55 55 55 56 56 56 56 56 56 56 56 56 56 56 56 56 58 58 58 58 58 59 59 59 59 59 59 59 59 59 59 60 60 60 60 60 60 61 61 61 Indication
(% of Wall Thickness) 22 42 32 21 40 21 20 21 29 32 17 18 28 26 31 24 14 15 28 33 22 12 11 11 14 12 17 23 19 39 32 17 15 15 14 14 27 12 34 29 25 26 17 16 13 Inch (+/-)
Location From Location AV3 AV4 AV5 AV6 AV2 AV3 AV4 AV5 AV2 AV5 AV6 AV1 AV2 AV3 AV4 AV5 AV6 AV2 AV3 AV4 AV5 AV2 AV3 AV4 AV5 AV6 AVI AV2 AV3 AV4 AV5 AV6 AV2 AV4 AV5 AV6 AV5 AV2 AV3 AV4 AV5 AV6 AV2 AV3 AV2 0.00 0.00 0.08 0.00
-0.06 0.00
-0.17
-0.06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.20 0.20 0.06 0.36 0.00
-0.40 0.03 0.00
-0.03 0.11
-0.11 0.00 0.00 0.28 0.06 0.00
-0.46 0.06 0.08 0.08 0.06 0.00 0.00 0.00 to WM 04-0046 Page 23 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 35 44 44 44 49 49 49 50 50 50 50 50 50 55 55 33 33 33 33 41 41 41 41 53 53 56 15 41 41 41 41 41 41 41 41 41 41 41 41 48 48 48 48 48 48 Column 61 61 61 61 61 61 61 62 62 62 62 62 62 62 62 64 64 64 64 64 64 64 64 64 64 64 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 Indication
(% of Wall Thickness) 21 14 19 16 46 29 16 23 44 40 47 23 15 28 26 17 12 21 13 22 10 16 20 12 12 12 14 30 30 30 26 47 43 50 50 48 47 27 29 22 24 43 44 37 33 Inch (+/-)
Location From Location AV3 5H AV3 AV4 AV2 AV3 AV4 AVI AV2 AV3 AV4 AV5 AV6 AV1 AV2 AV2 AV3 AV4 AV5 AV3 AV4 AV5 AV5 AV1 AV2 AVI 5H AVI AV1 AV2 AV2 AV3 AV3 AV4 AV4 AV5 AV5 AV6 AV6 AVI AV2 AV3 AV4 AV5 AV6 0.00
-0.55 0.00 0.00 0.00 0.00 0.17 0.31
-0.03 0.03 0.00
-0.11
-0.22 0.06 0.09
-0.28
-0.14
-0.08
-0.33
-0.09
-0.08 0.14
-0.44
-0.09
-0.06
-0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.00 0.00 0.00 0.14
-0.11 to WM 04-0046 Page 24 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 31 33 33 41 41 41 41 41 45 45 45 45 45 44 34 40 46 46 31 31 48 48 48 48 48 48 52 44 44 44 44 44 46 50 50 57 36 36 36 36 36 36 49 49 32 Column 66 66 66 66 66 66 66 66 66 66 66 66 66 67 68 68 68 68 69 69 69 69 69 69 69 69 69 70 70 70 70 70 70 70 70 70 71 71 71 71 71 71 71 71 72 Indication
(% of Wall Thickness) 18 14 13 16 21 25 25 24 35 20 35 40 16 16 13 14 27 18 10 15 10 43 41 10 14 11 11 16 20 13 16 16 22 19 17 12 35 26 25 20 23 17 35 22 26 Inch (+/-)
Location From Location AV2 AV2 AV3 AV2 AV3 AV4 AV5 AV6 AV2 AV3 AV4 AV5 AV6 AV2 AV2 AV2 AV2 AV3 AV1 AV5 AV1 AV2 AV3 AV4 AV5 AV6 AVI AVI AV2 AV3 AV5 AV6 AV2 AV2 AV3 AV5 AVI AV2 AV3 AV4 AV5 AV6 AV4 AV5 AVI 0.20
-0.06
-0.12
-0.09 0.00
-0.14
-0.11
-0.19
-0.06
-0.11
-0.11
-0.14
-0.06 0.00 0.14 0.19 0.15
-0.03
-0.09 0.06 0.00 0.00
-0.34 0.00 0.08
-0.06 0.00 0.03 0.11 0.00 0.08 0.22 0.12
-0.14 0.29 0.00 0.06 0.00 0.15
-0.08 0.13 0.16 0.19 0.19 0.00 to WM 04-0046 Page 25 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 32 36 36 39 44 44 44 44 44 44 45 45 48 39 39 39 44 46 46 46 46 50 50 50 50 36 36 45 45 45 45 45 45 52 57 57 39 39 39 39 39 39 44 39 41 Column 72 73 73 74 74 74 74 74 74 74 74 74 74 75 75 75 75 75 75 75 75 75 75 75 75 76 76 76 76 76 76 76 76 76 76 76 77 77 77 77 77 77 77 78 78 Indication
(% of Wall Thickness) 16 15 19 14 29 25 23 15 42 20 12 14 26 11 15 13 18 38 17 47 15 38 31 21 30 13 16 15 15 16 34 14 14 14 11 19 16 26 21 15 31 14 16 26 16 Inch (+/-)
Location From Location AV5 AV2 AV5 AV3 AVI AV2 AV3 AV4 AV5 AV6 AV1 AV2 AV2 AV2 AV3 AV5 AV2 AV2 AV3 AV4 AV5 AV2 AV3 AV4 AV5 AV1 AV2 AVI AV2 AV3 AV4 AV5 AV6 AV2 AV4 AV5 AV1 AV2 AV3 AV4 AV5 AV6 AV3 AV3 AV2
-0.14 0.25 0.19 0.00 0.00 0.00 0.26 0.00 0.05 0.00 0.00
-0.06 0.09
-0.11 0.00 0.00
-0.03 0.00 0.34 0.00 0.11 0.00 0.00
-0.06 0.00 0.06 0.00 0.12 0.15 0.12 0.03 0.00 0.00 0.17 0.00
-0.03 0.08 0.08
-0.03 0.11 0.16 0.00 0.17 0.00
-0.24 to WM 04-0046 Page 26 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 46 50 50 28 28 33 39 42 36 36 39 39 50 37 37 43 43 43 43 45 45 45 45 47 49 51 51 51 24 43 43 45 49 39 39 40 48 48 20 32 41 41 41 41 46 Column 78 78 78 79 79 79 79 79 80 80 80 80 80 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 82 82 82 82 82 83 83 83 83 83 84 84 84 84 84 84 84 Indication
(% of Wall Thickness) 20 14 16 10 12 11 17 12 17 17 21 19 16 14 11 14 24 10 13 20 33 22 13 14 25 19 17 16 11 16 20 27 20 29 20 16 10 10 18 10 19 27 18 18 30 Inch (+/-)
Location From Location AV2 AV2 AV3 AV2 AV5 AV5 AV2 AV3 AV3 AV4 AV2 AV4 AV2 AV3 AV4 AV2 AV3 AV4 AV5 AV2 AV3 AV4 AV5 AV3 AV2 AV2 AV4 AV5 AV6 AV2 AV4 AV3 AV2 AV3 AV4 AV3 AV2 AV4 AV6 AV3 AVI AV3 AV4 AV5 AV3 0.29 0.00 0.00 0.28 0.00
-0.17 0.00 0.00 0.00 0.00 0.00 0.00
-0.03 0.14 0.14 0.26 0.09
-0.17
-0.08 0.00
-0.03
-0.17 0.17 0.00 0.03 0.00 0.10
-0.03
-0.17
-0.06
-0.11 0.00 0.00 0.00
-0.03 0.00 0.25 0.08
-0.05 0.00 0.00 0.00 0.00 0.00 0.00 to WM 04-0046 Page 27 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 46 35 35 45 45 45 45 45 49 49 49 50 50 50 40 40 40 40 47 50 50 20 38 38 45 45 45 53 36 38 38 38 48 48 48 50 1
1 36 36 36 39 42 42 45 Column 84 85 85 85 85 85 85 85 85 85 85 85 85 85 87 87 87 87 87 87 87 88 88 88 88 88 88 88 89 89 89 89 89 89 89 89 90 90 90 90 90 90 90 90 90 Indication
(% of Wall Thickness) 18 13 14 22 40 29 19 17 27 13 13 21 18 10 15 17 16 32 11 13 15 16 19 15 16 22 30 15 17 21 25 17 33 12 20 20 5
6 16 12 15 13 38 48 20 Inch (+/-)
Location From Location AV4 AV3 AV4 AV2 AV3 AV4 AV5 AV6 AV2 AV4 AV5 AV4 AV5 AV6 AVI AV2 AV3 AV4 AV1 AV4 AV5 AV1 AV2 AV3 AV3 AV4 AV5 AV2 AV3 AV3 AV4 AV5 AV3 AV4 AV5 AV3 FBC FBH AV3 AV4 AV6 AV2 AV4 AV5 AV3 0.00 0.09
-0.14 0.25 0.00
-0.33 0.00 0.03 0.28 0.11 0.03 0.06 0.08 0.03 0.31
-0.14 0.11 0.08
-0.03 0.06 0.08 0.23 0.00 0.00 0.18 0.00 0.00 0.00
-0.14 0.09 0.03 0.08 0.00 0.11 0.06 0.00 0.00 0.18
-0.09 0.00
-0.13 0.11 0.00 0.00 0.00 to WM 04-0046 Page 28 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Indication
(% of Wall Thickness)
Inch (+/-)
Location From Location Row 53 53 53 1
1 32 49 1
1 40 40 40 43 45 45 45 49 49 49 1
45 45 45 1
1 41 41 41 41 41 43 43 43 43 44 38 41 41 41 44 45 45 45 45 45 Column 90 90 90 91 91 91 91 92 92 92 92 92 92 92 92 92 92 92 92 93 93 93 93 94 94 94 94 94 94 94 94 94 94 94 94 95 95 95 95 95 95 95 95 95 95 22 27 17 5
6 17 27 6
6 19 20 17 24 12 16 17 21 20 17 8
19 25 22 5
7 31 29 25 21 10 27 16 17 22 17 23 17 12 16 19 14 13 29 34 15 AV4 AV5 AV6 FBC FBH AV5 AV2 FBC FBH AVI AV3 AV5 AV3 AV3 AV4 AV5 AV2 AV4 AV5 FBC AV3 AV4 AV5 FBC FBH AV2 AV3 AV4 AV5 AV6 AV2 AV3 AV4 AV5 AV3 AV2 AV2 AV4 AV5 AV3 AV2 AV3 AV4 AV5 AV6 0.00 0.00 0.08
-0.31 0.26
-0.16 0.06
-0.31 0.00 0.00
-0.11 0.00
-0.08
-0.03
-0.03
-0.03 0.09 0.03 0.06 0.36 0.03 0.00 0.21 0.36 0.33 0.14 0.06 0.00
-0.03 0.00 0.09
-0.03 0.00
-0.03
-0.03
-0.06 0.17 0.13 0.00
-0.08
-0.11 0.08 0.00 0.00 0.00 to WM 04-0046 Page 29 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 41 41 44 44 44 45 45 27 38 40 40 41 41 46 40 40 40 47 47 47 47 47 38 38 43 34 38 38 41 41 41 41 42 36 38 38 40 40 34 36 36 38 38 38 40 Column 96 96 96 96 96 96 96 97 97 97 97 97 97 97 98 98 98 98 98 98 98 98 99 99 99 100 100 100 100 100 100 100 100 101 101 101 102 102 103 103 103 103 103 103 103 Indication
(% of Wall Thickness) 14 20 19 26 16 19 26 9
16 20 22 27 34 18 20 23 12 27 40 27 31 17 23 19 16 13 19 15 26 25 25 19 22 15 24 22 30 23 11 11 16 16 29 17 21 Inch (+/-)
Location From Location AV2 AV3 AV2 AV3 AV4 AV2 AV5 TSH AV5 AV3 AV4 AV3 AV4 AV3 AV2 AV3 AV4 AV2 AV3 AV4 AV5 AV6 AV2 AV3 AV5 AV3 AV2 AV3 AV2 AV3 AV4 AV5 AV4 AV2 AV3 AV4 AV3 AV4 AV6 AV3 AV4 AV3 AV4 AV5 AV2 0.00
-0.03
-0.06
-0.08
-0.11
-0.06
-0.11
-0.64 0.06 0.06 0.08 0.14 0.16 0.17
-0.06 0.06 0.16 0.06 0.00 0.16 0.26
-0.05 0.00 0.00
-0.05 0.00
-0.11 0.11 0.00 0.03 0.08 0.14 0.05 0.00
-0.28
-0.17 0.00 0.00 0.00
-0.20
-0.08
-0.14
-0.03 0.00 0.00 to WM 04-0046 Page 30 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Tube Indications on Steam Generator "D" Row 40 40 40 40 35 38 40 40 40 40 35 38 38 34 35 35 35 35 35 35 35 35 35 35 32 33 33 33 34 34 34 32 35 35 30 30 27 30 24 26 27 28 21 Column 103 103 103 103 104 104 104 104 104 104 105 105 105 106 106 106 106 106 107 107 107 108 108 108 109 109 109 109 109 109 109 110 110 110 111 111 113 114 115 115 115 115 117 Indication
(% of Wall Thickness) 27 24 14 14 13 12 35 23 16 16 12 35 22 13 17 11 17 15 18 20 16 24 11 16 14 20 22 24 15 11 12 12 28 17 16 15 17 37 16 13 13 40 9
Inch (+/-)
Location From Location AV3 AV4 AV5 AV6 AV5 AV3 AV2 AV3 AV5 AV6 AV6 AV3 AV4 AV4 AV2 AV3 AV4 AV6 AV3 AV4 AV5 AV4 AV5 AV6 AV5 AV3 AV4 AV5 AV2 AV4 AV6 AV5 AV4 AV6 AV2 AV6 AV2 AV5 AVI AVI AV6 AV6 TSH 0.00
-0.06
-0.14
-0.03
-0.17 0.00 0.00
-0.03 0.00
-0.36 0.00
-0.08
-0.08
-0.08 0.00 0.08 0.00
-0.44 0.00 0.03 0.00 0.05 0.00 0.00
-0.14 0.03
-0.58
-0.14 0.06
-0.19
-0.14 0.00 0.00 0.08 0.17 0.06
-0.03 0.05 0.03 0.00
-0.11 0.00 0.01 to WM 04-0046 Page 31 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Section 3:
Identification of Tubes Plugged.
A. Steam Generator TAH:
New pluggable indication Row 40 30 50 B. Steam Generator uD":
New pluggable indication Row 52
- 40 50 49 50 49 50 41 48 45 48 44 46 45 42 47 28 Column 46 49 76 Column 37 41 49 55 55 61 62 65 65 66 69 74 75 85 90 98 115
- Tube (40,41) in Steam Generator contained an obstruction. This tube was further inspected with camera equipment but the obstruction could not be dislodged.
This tube was administratively plugged.
Total number of Tubes Plugged in Each Steam Generator (this includes tubes plugged during pre-service inspections):
B C
D Total Number of Tubes Plugged
- 29 28 19 97 Total Percentage Plugged 0.52%
0.50%
0.34%
1.72%
- An additional 3 plugs are installed in Steam Generator "A" cold leg only, due to tube sheet drilling mistakes during manufacturing. No tubes are installed in those locations.
to WM 04-0046 Page 32 of 33 STEAM GENERATOR TUBE INSPECTION REPORT Summary of Tube IntegritV Assessment The examination results confirm that the Wolf Creek steam generators currently meet all industry and regulatory structural and leakage integrity guidance.
The only operational degradation mechanisms observed during this examination was tube wear at the AVB intersections. Although wear due to loose parts was observed, this degradation depends specifically on the presence of foreign objects, and is not inherent to the operating conditions of the steam generators. A number of new AVB wear indications were found in both Steam Generators "A" and "D".
AVB wear is an active degradation mechanism in Steam Generator "D" according to the definition of an active degradation mechanism in the EPRI PWR Steam Generator Examination Guidelines, Rev. 6.
One tube in Steam Generator "A" and three tubes in Steam Generator "D" were reported from the Top of Tube Sheet +Point program to have volumetric indications. All of the indications were sized using a qualified technique, with the largest indication being 11% through wall (TW).
These indications are judged to be the result of wear with previous foreign objects or due to manufacturing anomalies.
No possible loose parts were associated with these indications.
Since the largest indication is much less than the conservative structural limit, the criteria for condition monitoring are met for top of tubesheet volumetric indications.
Eighteen indications of wear at the flow distribution baffle (FDB) intersections were observed in Steam Generator UD".
Examination with the +Point probe showed that these indications were not crack-like. These indications have been previously observed, and lookback evaluation to Refueling Outage 11 data shows that there are no significant changes in the shape or size of the signal. The maximum reported depth from the sizing was 8% TW. Since the maximum indications plus the non-destructive examination (NDE) uncertainty is less than the structural limit, the requirements for condition monitoring are satisfied for wear at the FDB.
Indications of wear at a support plate location were reported in two tubes in Steam Generator "D" at the 5th support plate on the hot leg side. Originally reported as distorted support plate intersections from the bobbin program, these indications were examined with +Point to confirm the absence of cracking. The RPC examination concluded these indications were wear. A look-back evaluation indicated that these small bobbin signals were present at Refueling Outage 11 also, but not reported, and remain unchanged since that time. The indications are attributed to wear from foreign objects which are no longer resident at these positions. The maximum depth of these indications is 14% TW. Since the indication depth plus the sizing uncertainty is significantly less than the structural limit, the requirements for condition monitoring are met for these indications.
The obstruction in tube (40,41) in Steam Generator "D" was determined to be a remnant (bolt shank) of the split pin that failed just after Refueling Outage 12. The tube was removed from service with the obstruction still in place. Because of the location of the foreign object in the tube, and because the tube was removed from service, this tube does not represent a potential degradation mechanism because no significant driving forces for either mechanical vibration or corrosion exist.
All structural and leakage criteria are projected to be satisfied for Steam Generators "A" and "D" through, at least, end of cycle 15, when they will next be inspected. Based on the results of this to WM 04-0046 Page 33 of 33 STEAM GENERATOR TUBE INSPECTION REPORT inspection, Steam Generators "B" and UCn, which were not inspected during Refueling Outage 13, are projected to satisfy all structural and leakage criteria through, at least, end of cycle 14.
Steam Generators "B" and "C" will be next inspected at the end of cycle 14.