ML12109A044
| ML12109A044 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 04/06/2012 |
| From: | Scace S Dominion, Dominion Nuclear Connecticut |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML12109A044 | List: |
| References | |
| 12-123 | |
| Download: ML12109A044 (24) | |
Text
Dominion Nuclear Connecticut, Inc.
APR 0 6 2012 Millstone Power Station Rope Ferry Road Waterford, CT 06385 U.S. Nuclear Regulatory Commission Serial No.12-123 Attention: Document Control Desk NSS&L/MLC RO Washington, DC 20555 Docket No.
50-423 License No.
NPF-49 DOMINION NUCLEAR CONNECTICUT. INC.
MILLSTONE POWER STATION UNIT 3 END OF CYCLE 14 STEAM GENERATOR TUBE INSPECTION REPORT In accordance with the Millstone Power Station Unit 3 Technical Specification (TS)
Section 6.9.1.7, Dominion Nuclear Connecticut, Inc. hereby submits the End of Cycle 14 (EOC14) Steam Generator (SG) Tube Inspection report. The report is submitted within 180 days after initial entry into MODE 4 following completion of the fall 2011 (i.e., 3R14) steam generator inspections performed in accordance with TS 6.8.4.g, "Steam Generator (SG) Program." contains the EOC14 SG Tube Inspection report. Enclosure 2 contains a list of acronyms.
The report includes the following:
- a. The scope of inspections performed on each SG,
- b. Active degradation mechanisms found,
- c. Nondestructive examination techniques utilized for each degradation mechanism,
- d. Location, orientation (if linear), and measured sizes (if available) of service induced indications,
- e. Number of tubes plugged during the inspection outage for each active degradation mechanism,
- f. Total number and percentage of tubes plugged to date,
- g. The results of condition monitoring, including the results of tube pulls and in-situ
- testing,
- h. The effective plugging percentage for all plugging in each SG,
- i. During Refueling Outage 14 and the subsequent operating cycle, 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,
- j.
During Refueling Outage 14 and the subsequent operating cycle, the calculated accident induced leakage rate from the portion of the tubes below 15.2 inches from the top of the tubesheet for the most limiting accident in the most limiting SG. In
Serial No.12-123 Docket No. 50-423 Page 2 of 2 addition, if the calculated accident induced leakage rate from the most limiting accident is less than 2.49 times the maximum operational primary to secondary leakage rate, the report should describe how it was determined; and
- k. During Refueling Outage 14 and the subsequent operating cycle, the results of monitoring for tube axial displacement (slippage). If slippage is discovered, the implications of the discovery and corrective action shall be provided.
If you have any questions or require additional information, please contact Mr. William D.
Bartron at (860) 444-4301.
Sincerely, S.
cace Site Vice President - Millstone
Enclosures:
- 1) Millstone Power Station Unit 3, End of Cycle 14 Steam Generator Tube Inspection Report
- 2) Acronyms Commitments made in this letter: None cc:
U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406-1415 C. J. Sanders NRC Project Manager U.S. Nuclear Regulatory Commission One White Flint North, Mail Stop 08-B3 11 555'Rockville Pike Rockville, MD 20852-2738 NRC Senior Resident Inspector Millstone Power Station
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report ENCLOSURE I Millstone Power Station Unit 3 End of Cycle 14 Steam Generator Tube Inspection Report MILLSTONE PQWER STATION UNIT 3 DOMINION NUCLEAR CONNECTICUT, INC.
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 2 of 20 End of Cycle 14 Steam Generator Tube Inspection Report In accordance with Millstone Power Station Unit 3 (MPS3) Technical Specification (TS)
Section 6.9.1.7, Dominion Nuclear Connecticut, Inc. (DNC) hereby submits the End of Cycle 14 (EOC14) Steam Generator Tube Inspection Report. The report is submitted within 180 days after initial entry into MODE 4 following completion of the fall 2011 steam generator inspections performed in accordance with TS 6.8.4.g, Steam Generator (SG) Program.
Initial entry into Mode 4 occurred on November 15, 2011; therefore, this report is required to be submitted by May 13, 2012.
The following section provides a brief summary of the primary side steam generator inspections performed during the EOC14 outage (also referred to as 3R14). The subsequent section provides specific responses to each of the TS 6.9.1.7 report requirements.
See Enclosure 2, "Acronyms," for an explanation of acronyms.
Introduction MPS3 is a four loop Westinghouse pressurized water reactor with Westinghouse Model F SGs. Each SG contains 5626 U-bend thermally treated Inconel 600 tubes. The tubing is nominally 0.688 inches outside diameter with a 0.040 inch nominal wall thickness. During SG fabrication, the tubes were hydraulically expanded over the full depth of the 21.23 inch thick tubesheet. The tubesheet was drilled on a square pitch with 0.98 inch spacing. There are 59 rows and 122 columns in each SG. The radius of the row 1 U-bends is 2.20 inches.
The U-bends in rows 1 through 10 were stress relieved after being formed. Secondary side tube support structures include a flow distribution baffle, seven plate supports with broached holes on the vertical section of the tubes, and six anti-vibration bars (AVBs) on the U-bend section of the tubes. See Figure 1, "Millstone Power Station Unit 3 Steam Generator Arrangement," for illustration of SG component locations.
The SGs have accrued 19.3 effective full power years (EFPYs) of operation as of EOC14 (fall 2011). MPS3, which is a 1296 megawatt electric unit, operates with a hot leg temperature of 620 degrees Fahrenheit.
EOC14 SG Tube Inspection Report This section provides responses to each of the requirements specified by MPS3 TS 6.9.1.7.
Bolded text represents TS verbiage. The required information is provided immediately following the restatement of each reporting requirement.
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 6.8.4.g, Steam Generator (SG) Program. The report shall include:
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 3 of 20
- a. The scope of inspections performed on each SG, One hundred percent of the operational tubes within SG A and SG C, a total of 11,192 tubes (approximately 50 percent of the total population of tubes), were inspected full length.
The majority of the tubing lengths were examined with bobbin probes. The U-bend region of rows 1 and 2 tubes were examined by a motorized rotating pancake coil (MRPC) technique in addition to the bobbin probe examination of the straight legs of the tubes. An augmented sample of 7,143 tube locations was inspected with an array coil probe. An additional augmented sample of 1,387 tube locations was examined with a rotating coil probe. The augmented sample inspections were performed in areas of special interest including; hot leg expansion transitions, tube overexpansion locations within the hot leg tubesheet, low row U-bends, dents, as well as locations where the bobbin probe response was ambiguous. The sample also included bounding examinations for Possible Loose Part (PLP) indications and new volumetric flaw (fabrication or foreign object wear) detections.
Secondary side activities were performed in all SGs (except where noted) during 3R14 and included the following:
" High pressure sludge lancing and upper bundle flush (UBF) in each SG.
- Post-sludge lancing visual examination of top-of-tubesheet annulus and no-tube lane to assess as-left material condition and cleanliness, and to identify and remove any retrievable foreign objects.
" Visual investigation of accessible locations having eddy current indications potentially related to foreign objects, and if present, removal of those retrievable foreign objects.
" Secondary side examinations within SG D as follows:
o Steam drum visual inspections to evaluate the material condition and cleanliness of key components such as moisture separators, drain systems, and interior surfaces.
o Drop down examinations (through the primary separators) of the upper tube bundle and AVB supports.
o Visual inspections of feedring internal interface for flow accelerated corrosion.
o Visual inspections of upper tube support plate to assess material conditions and cleanliness.
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 4 of 20 Table 1 MPS3 Eddy Current Testing Summary for 3R14 SG A SG B SG C SG D Total Number of Tubes Inservice at Start of 3R14 5,588 5,606 5,604 5,540 22,338 Number of Tubes Inspected F/L w/Bobbin Probe 4981 N/A 5006 N/A 9,987 Number of Tubes Inspected w/Bobbin Probe Cold Leg Straights and 364 N/A 366 N/A 730 Hot Leg Candy Canes (Rows 3 through 5)
Number of Tubes Inspected w/Bobbin Probe Hot and Cold Leg 243 N/A 232 N/A 475 Straights and MRPC U-Bends (Rows 1 and 2)
Previously Plugged Tubes 38 20 22 86 166 Number of Tubes Incomplete w/Bobbin Probe due to Obstruction 0
N/A 0
N/A 0
Number of Examinations w/MRPC (Total)t 743 N/A 644 N/A 1387
- Rows 1 and 2 U-Bends 243 N/A 232 N/A 475
- Hot Leg Miscellaneous Special Interest - Diagnostic Exams and 230 N/A 203 N/A 433 from Previous History
- Cold Leg Miscellaneous Special Interest - Diagnostic Exams and 77 N/A 83 N/A 160 from Previous History 9U-bend Special Interest - Diagnostic Exams and from Previous 58 N/A 85 N/A 143 History 9SI from Array and PLP / SVI Bounding Special Interest 135 N/A 41 N/A 176 Number of Examinations w/ARRAY (Total) 3594 N/A 3549 N/A 7143
- Hot Leg Tubesheet (01H to TSH - 3")*
2245 N/A 2660 N/A 4905 sHot Leg Tubesheet (01H to TSH - -15.2")*
568 N/A 153 N/A 721
- Cold Leg Tubesheet (01 C to TSC - 3")*
575 N/A 596 N/A 1171
- Cold Leg Tubesheet (01 C to TSC - -15.2")*
157 N/A 136 N/A 293
- Foreign Object Wear Bounding 49 N/A 0
N/A 49 OID Chatter Examination 0
N/A 4
N/A 4
Total Number of Hot Leg OXP/OVR Locations Examined 904 N/A 190 N/A 1094 Total Number of Cold Leg OXP/OVR Locations Examined 296 N/A 204 N/A 500 Tubes w/Max AVB Wear P>
40 %
0 N/A 0
N/A 0
Tubes w/ Max AVB Wear > 37 %
2 N/A 0
N/A 2
Tubes w/ Max AVB Wear >20% but <37%
53 N/A 11 N/A 64 Tubes w/ Max AVB Wear <20%
98 N/A 21 N/A 119 Tubes w/ Max TSP Wear <20%
2 N/A 0
N/A 2
Tubes w/ Max Non-Structure Volumetric Degradation > 40 %
1 N/A 0
N/A 1
Tubes w/ Max Non-Structure Volumetric Degradation >20% but <40%
12 N/A 12 N/A 24 Tubes w/ Max Non-Structure Volumetric Degradation <20%
4 N/A 14 N/A 18 Total Tubes Plugged as a Result of this Inspection:
11 N/A 0
N/A 11
- Due to AVB Wear >37% (discretionary) 2 N/A 0
N/A 2
- Due to AVB Wear 537% (discretionary) 1 N/A 0
N/A 1
= Due to Non-Support Volumetric Degradation > 40 %
1 N/A 0
N/A 1
- Due to Non-Support Volumetric Degradation < 40 % (discretionary) 0 N/A 0
N/A 0
- Due to BET lower than TTS -1" 7
N/A 0
N/A 7
- Due to ID Chatter (discretionary) 0 N/A 0
N/A 0
- Due to an Obstruction 0
N/A 0
N/A 0
t Values provided in the total and the sub-bullets correspond to the number of examinations performed.
Within the cutout region, the upper extent of the array probe exam was the second support (i.e., 02H or 02C)
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 5 of 20
- b. Active degradation mechanisms found, The existing degradation mechanisms found during 3R14 included AVB wear, tube support plate (TSP) wear, volumetric indications from fabrication, and volumetric degradation from foreign object wear.
- c. Nondestructive examination techniques utilized for each degradation mechanism, Table 2 identifies the examination techniques used for each identified degradation mechanism.
Table 2 Identified Degradation Mechanisms and Inspection Techniques Classification Degradation Location Probe Type Mechanism Existing Tube Wear Anti-Vibration Bars Bobbin - Detection and Sizing Bobbin - Detection Existing Tube Wear Tube Support Plate
+PointTM - Sizing Tube Wear (foreign Bobbin, Array and +PointTM -
Existing objects)
Freespan and TTS Detection
+PointTM-Sizing Existing IGA/SCC Tube Ends N/A*
Existing FAC Feed Ring and JTube to Feed Ring Interface Visual Inspection ODSCC Hot Leg Top-of-Tubesheet Array - Detection Potential PWSCC And Sludge Region
+PointTM - Detection and Sizing Potential ODSCC Bulges, Dents, Manufacturing Anomalies, and Array - Detection PWScc Above-Tubesheet Overexpansions (OVR)
+PointM-Detection and Sizing Potential PWScc Tubesheet Array - Detection Overexpansions (OXP)
+Point - Detection and Sizing Bobbin - Detection Potential Tube Wear Flow Distribution Baffle
+PointTM-Sizing ODSCC T
Potential PWSCC Row 1 and 2 U-Bends
+PointTM - Detection and Sizing Potential FAC Moisture Separators Visual Inspection Potential Plug Installation Plugs Visual Inspection Problems Potential Tube Slippage Within Tubesheet Bobbin Detection
- Inspection for this mechanism was not necessary under the "temporary" alternate repair criteria implemented during 3R14.
- d. Location, orientation (if linear), and measured sizes (if applicable) of service induced indications, The following tables (Tables 3 through 8) identify the AVB wear, and non AVB wear volumetric indications reported during 3R14.
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 6 of 20 Table 3 Steam Generator A - Repeat AVB Wear Indications New Outage Row Col Elev Old Offset New Offset Old %TW New %TW Change Growth Rate 3R14 22 78 AV5 0
0.1 16 14
-2
-0.74
%TW/EFPY 3R14 22 78 AV6
-0.02
-0.1 11 11 0
0.00
%TW/EFPY 3R14 24 116 AV6 0.25 0.34 13 14 1
0.37
%TW/EFPY 3R14 26 44 AV2 0.15 0.05 17 17 0
0.00
%TW/EFPY 3R14 26 44 AV5 0.02 0.02 21 19
-2
-0.74 %TW/EFPY 3R14 26 115 AV1 0
-0.1 27 28 1
0.37
%TW/EFPY 3R14 27 115 AV1
-0.34
-0.32 18 18 0
0.00
%TW/EFPY 3R14 28 36 AV5
-0.07 0.02 10 10 0
0.00
%TW/EFPY 3R14 28 113 AV5 0.1 0.19 12 10
-2
-0.74 %TW/EFPY 3R14 28 115 AV1 0
-0.12 32 32 0
0.00
%TW/EFPY 3R14 29 40 AV2 0
-0.05 14 11
-3
-1.11
%TW/EFPY 3R14 29 67 AV2 0.05 0.02 20 19
-1
-0.37 %TW/EFPY 3R14 29 67 AV5 0.07 0.02 13 14 1
0.37
%TW/EFPY 3R14 29 79 AV5 0.32
-0.05 11 13 2
0.74
%TW/EFPY 3R14 29 114 AV2 0
0 14 14 0
0.00
%TW/EFPY 3R14 29 114 AV5 0
0 14 11
-3
-1.11
%TW/EFPY 3R14 30 9
AV5 0.59 0.49 31 32 1
0.37
%TW/EFPY 3R14 30 10 AV5
-0.02 0
17 17 0
0.00
%TW/EFPY 3R14 30 11 AV5 0
0 11 11 0
0.00
%TW/EFPY 3R14 30 40 AV2 0
0.05 13 11
-2
-0.74 %TW/EFPY 3R14 30 113 AV5 0
0.02 27 25
-2
-0.74 %TW/EFPY 3R14 30 114 AV1 0.02
-0.39 15 10
-5
-1.86
%TW/EFPY 3R14 31 61 AV5
-0.15
-0.1 10 11 1
0.37
%TW/EFPY 3R14 31 109 AV2
-0.07
-0.05 14 12
-2
-0.74 %TW/EFPY 3R14 32 111 AV4
-0.15
-0.12 22 22 0
0.00
%TW/EFPY 3R14 32 111 AV5 0.12 0.12 23 18
-5
-1.86
%TW/EFPY 3R14 34 15 AV6
-0.15
-0.02 12 14 2
0.74
%TW/EFPY 3R14 34 41 AV3 0
0.12 18 18 0
0.00
%TW/EFPY 3R14 34 41 AV4
-0.1 0.02 12 12 0
0.00
%TW/EFPY 3R14 34 44 AV3 0.22 0.02 8
10 2
0.74
%TW/EFPY 3R14 34 46 AV3 0
0 16 17 1
0.37
%TW/EFPY 3R14 34 46 AV4
-0.12
-0.02 13 14 1
0.37
%TW/EFPY 3R14 34 46 AV5 0
0 31 30
-1
-0.37 %TW/EFPY 3R14 34 46 AV6
-0.15 0
33 33 0
0.00
%TW/EFPY 3R14 34 48 AVI
-0.12
-0.05 19 21 2
0.74
%TW/EFPY 3R14 34 48 AV2
-0.05
-0.02 21 20
-1
-0.37
%TW/EFPY 3R14 34 48 AV3
-0.2
-0.2 31 29
-2
-0.74
%TW/EFPY 3R14 34 73 AV4 0.34 0.22 27 33 6
2.23
%TW/EFPY 3R14 34 73 AV5
-0.15
-0.34 31 36 5
1.86
%TW/EFPY 3R14 34 85 AV5 0
-0.07 17 16
-1
-0.37
%TW/EFPY 3R14 34 91 AV2 0
0 13 11
-2
-0.74
%TW/EFPY 3R14 34 91 AV4
-0.15
-0.2 11 10
-1
-0.37 %TW/EFPY 3R14 34 97 AV3 0.02 0
16 14
-2
-0.74 %TW/EFPY 3R14 34 98 AV4 0.29 0.22 2
16 15
-1
-0.37
%TW/EFPY 3R14 34 107 AV4 0
0.02 13 11
-2
-0.74
%TW/EFPY 3R14 34 109 AV4 0
-0.05 27 26
-1
-0.37
%TW/EFPY 3R14 35 49 AV5
-0.02 0
18 17
-1
-0.37
%TW/EFPY 3R14 35 59 AV2 0.07 0
30 29
-1
-0.37
%TW/EFPY 3R14 35 59 AV3
-0.02
-0.05 14 13
-1
-0.37
%TW/EFPY 3R14 35 59 AV4
-0.1 0.05 11 3
1.11
%TW/EFPY
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 7 of 20 New Outage Row Col Elev Old Offset New Offset Old %TW New %TW Change Growth Rate 3R14 35 59 AV6 0.12 0
18 19 1
0.37
%TW/EFPY 3R14 35 60 AV4 0.25
-0.07 27 25
-2
-0.74 %TW/EFPY 3R14 35 60 AV5 0.02
-0.07 20 17
-3
-1.11
%TW/EFPY 3R14 35 60 AV6
-0.07 0.05 11 11 0
0.00
%TW/EFPY 3R14 35 61 AV2
-0.02
-0.15 16 16 0
0.00
%TW/EFPY 3R14 35 61 AV4 0.05 0
14 15 1
0.37
%TW/EFPY 3R14 35 65 AV2 0.12 0.1 16 15
-1
-0.37 %TW/EFPY 3R14 35 65 AV3 0.02 0
16 15
-1
-0.37 %TW/EFPY 3R14 35 65 AV4 0.12 0.07 18 16
-2
-0.74 %TW/EFPY 3R14 35 65 AV5 0.32 0.1 19 18
-1
-0.37 %TW/EFPY 3R14 35 71 AV3
-0.12
-0.24 11 10
-1
-0.37 %TW/EFPY 3R14 35 71 AV4
-0.12
-0.15 25 24
-1
-0.37 %TW/EFPY 3R14 35 71 AV5
-0.17
-0.17 13 14 1
0.37
%TW/EFPY 3R14 35 77 AV2 0.07 0.1 12 12 0
0.00
%TW/EFPY 3R14 35 77 AV3
-0.15
-0.2 20 19
-1
-0.37 %TW/EFPY 3R14 35 77 AV4 0.07
-0.1 16 14
-2
-0.74 %TW/EFPY 3R14 35 80 AV3
-0.05 0
10 11 1
0.37
%TW/EFPY 3R14 35 100 AV3
-0.07 0
11 10
-1
-0.37 %TW/EFPY 3R14 35 108 AV2 0
0 12 10
-2
-0.74 %TW/EFPY 3R14 35 108 AV3
-0.07
-0.1 13 12
-1
-0.37 %TW/EFPY 3R14 37 45 AV2 0.02 0.02 33 34 1
0.37
%TW/EFPY 3R14 37 45 AV3 0.1 0
21 23 2
0.74
%TW/EFPY 3R14 37 45 AV4 0.02 0.02 14 14 0
0.00
%TW/EFPY 3R14 37 45 AV5
-0.12
-0.12 17 20 3
1.11
%TW/EFPY 3R14 37 56 AV3 0.05 0
14 16 2
0.74
%TW/EFPY 3R14 37 56 AV4 0.15 0.05 18 20 2
0.74
%TW/EFPY 3R14 37 69 AV5 0.22
-0.12 18 20 2
0.74
%TW/EFPY 3R14 37 69 AV6
-0.1
-0.22 17 20 3
1.11
%TW/EFPY 3R14 37 89 AV3 0.22 0.27 10 10 0
0.00
%TW/EFPY 3R14 37 90 AV3 0.05 0.02 25 24
-1
-0.37 %TW/EFPY 3R14 37 90 AV4 0
0 16 15
-1
-0.37 %TW/EFPY 3R14 37 90 AV5 0.02 0
17 14
-3
-1.11
%TW/EFPY 3R14 37 91 AV3
-0.17 0
21 22 1
0.37
%TW/EFPY 3R14 37 91 AV4
-0.1 0
19 17
-2
-0.74
%TW/EFPY 3R14 37 91 AV5
-0.1 0
30 29
-1
-0.37
%TW/EFPY 3R14 37 91 AV6
-0.12 0
23 21
-2
-0.74
%TW/EFPY 3R14 37 92 AV5
-0.07 0
16 15
-1
-0.37
%TW/EFPY 3R14 37 99 AV3 0
-0.1 16 13
-3
-1.11
%TW/EFPY 3R14 37 100 AV3
-0.2
-0.17 18 15
-3
-1.11
%TW/EFPY 3R14 37 100 AV4 0
-0.2 16 13
-3
-1.11
%TW/EFPY 3R14 37 100 AV5 0
-0.02 20 16
-4
-1.485 %ITW/EFPY 3R14 37 106 AV4
-0.1 0
20 20 0
0
%TW/EFPY 3R14 37 106 AV5
-0.02 0.05 17 13
-4
-1.485 %TW/EFPY 3R14 38 52 AV2 0.22 0.05 20 16
-4
-1.485 %TW/EFPY 3R14 38 79 AV6
-0.1
-0.07 11 10
-1
-0.37
%TW/EFPY 3R14 38 86 AV5 0
-0.1 12 11
-1
-0.37
%TW/EFPY 3R14 38 106 AV3
-0.02
-0.12 25 23
-2
-0.74
%TW/EFPY 3R14 38 106 AV4
-0.1
-0.15 20 18
-2
-0.74
%TW/EFPY 3R14 38 106 AV5
-0.05
-0.07 21 20
-1
-0.37
%TW/EFPY 3R14 39 51 AV3 0.02 0.02 15 15 0
0.00
%TW/EFPY
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 8 of 20 New Outage Row Col Elev Old Offset New Offset Old %TW New %T/W Change Growth Rate 3R14 39 51 AV4 0
0 15 13
-2
-0.74
%TV/EFPY 3R14 39 57 AV1
-0.15
-0.1 12 14 2
0.74
%TW/EFPY 3R14 39 57 AV2
-0.43
-0.22 27 31 4
1.48
%TW/EFPY 3R14 39 57 AV3
-0.3
-0.1 15 18 3
1.11
%TW/EFPY 3R14 39 57 AV4
-0.38
-0.07 17 19 2
0.74
%TW/EFPY 3R14 39 60 AV4 0
-0.02 25 25 0
0.00
%TW/EFPY 3R14 39 62 AV5 0
0 14 12
-2
-0.74
%TW/EFPY 3R14 39 62 AV6
-0.1
-0.1 15 14
-1
-0.37
%TW/EFPY 3R14 39 70 AV2 0.07 0.02 10 10 0
0.00
%TW/EFPY 3R14 39 70 AV3 0.02
-0.1 16 19 3
1.11
%TW/EFPY 3R14 39 71 AV4
-0.07
-0.17 20 20 0
0.00
%TW/EFPY 3R14 39 71 AV5
-0.2
-0.32 21 21 0
0.00
%TW/EFPY 3R14 39 75 AV3
-0.05
-0.24 13 11
-2
-0.74
%TW/EFPY 3R14 39 75 AV5
-0.12
-0.22 15 14
-1
-0.37
%TW/EFPY 3R14 39 75 AV6 0
-0.07 15 14
-1
-0.37
%TW/EFPY 3R14 39 78 AV3
-0.02
-0.07 12 12 0
0.00
%TW/EFPY 3R14 40 45 AV3 0.12 0.12 13 13 0
0.00
%TW/EFPY 3R14 40 45 AV4 0.02 0
30 30 0
0.00
%TW/EFPY 3R14 40 45 AV5 0
0.05 14 14 0
0.00
%TW/EFPY 3R14 40 51 AV4
-0.07
-0.17 19 21 2
0.74
%TW/EFPY 3R14 40 51 AV5 0.07 0.02 31 30
-1
-0.37
%TW/EFPY 3R14 40 58 AV2
-0.18
-0.24 18 15
-3
-1.11
%TW/EFPY 3R14 40 58 AV3
-0.38
-0.37 23 16
-7
-2.60
%TW/EFPY 3R14 40 58 AV5
-0.15
-0.27 15 13
-2
-0.74
%TW/EFPY 3R14 40 67 AV3
-0.17
-0.12 11 14 3
1.11
%TW/EFPY 3R14 40 71 AV2 0.07
-0.02 20 20 0
0.00
%TW/EFPY 3R14 40 71 AV3
-0.22
-0.22 21 23 2
0.74
%TW/EFPY 3R14 40 71 AV4
-0.17
-0.34 29 29 0
0.00
%TW/EFPY 3R14 40 94 AV5 0.22
-0.15 23 20
-3
-1.11
%TW/EFPY 3R14 40 100 AV3
-0.05
-0.07 14 14 0
0.00
%TW/EFPY 3R14 41 61 AV3
-0.22
-0.24 20 20 0
0.00
%TW/EFPY 3R14 41 61 AV4
-0.05
-0.05 26 25
-1
-0.37
%TW/EFPY 3R14 41 87 AV4
-0.05
-0.12 17 17 0
0.00
%TW/EFPY 3R14 41 101 AV4 0.1
-0.02 15 13
-2
-0.74
%TW/EFPY 3R14 41 102 AV4 0
-0.1 30 27
-3
-1.11
%TW/EFPY 3R14 41 102 AV5 0
-0.07 16 16 0
0.00
%TW/EFPY 3R14 42 33 AV3 0
-0.02 23 22
-1
-0.37
%TW/EFPY 3R14 42 33 AV4
-0.1
-0.22 16 15
-1
-0.37
%TW/EFPY 3R14 42 37 AV2 0
-0.17 14 14 0
0.00
%TW/EFPY 3R14 42 43 AV2
-0.15
-0.02 19 19 0
0.00
%TVW/EFPY 3R14 42 43 AV3 0.02 0
16 17 1
0.37
%TW/EFPY 3R14 42 53 AV3
-0.17 0
14 14 0
0.00
%TW/EFPY 3R14 42 53 AV4 0
0.02 22 24 2
0.74
%TW/EFPY 3R14 42 53 AV5 0
0.02 16 20 4
1.48
%TW/EFPY 3R14 42 63 AV3 0.17
-0.07 18 20 2
0.74
%TW/EFPY 3R14 42 63 AV4 0.02
-0.02 11 13
-2 0.74-
%TW/EFPY 3R14 42 63 AV5 0.02
-0.02 10 12 2
0.74
%TW/EFPY 3R14 42 77 AV2
-0.1
-0.02 10 12 2
0.74
%TW/EFPY 3R14 42 77 AV3 0.07 0.07 15 16 1
0.37
%TW/EFPY 3R14 42 77 AV4
-0.2
-0.1 26 26 0
0.00
%TW/EFPY
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 9 of 20 New Outage Row Col Elev Old Offset New Offset Old %TW New %TW Change Growth Rate 3R14 42 85 AV4
-0.02 0.07 15 16 1
0.37
%TW/EFPY 3R14 42 86 AV3 0.07 0.05 13 13 0
0.00
%TW/EFPY 3R14 42 86 AV4 0.05 0
14 14 0
0.00
%TW/EFPY 3R14 42 93 AV3
-0.05
-0.12 15 15 0
0.00
%TWN/EFPY 3R14 42 93 AV4
-0.05
-0.07 22 22 0
0.00
%TW/EFPY 3R14 42 93 AV5 0
-0.07 26 26 0
0.00
%TW/EFPY 3R14 42 98 AV1
-0.02
-0.19 11 10
-1
-0.37
%TW/EFPY 3R14 42 98 AV3 0
-0.05 32 29
-3
-1.11
%TW/EFPY 3R14 42 98 AV4 0
-0.07 31 31 0
0.00
%TW/EFPY 3R14 42 101 AV2
-0.02
-0.1 20 21 1
0.37
%TW/EFPY 3R14 42 101 AV3
-0.02
-0.05 16 14
-2
-0.74
%TW/EFPY 3R14 42 101 AV4 0.07
-0.1 26 25
-1
-0.37
%TW/EFPY 3R14 42 101 AV5 0.02 0
27 28 1
0.37
%TW/EFPY 3R14 42 102 AV3
-0.12
-0.12 22 22 0
0.00
%TW/EFPY 3R14 42 102 AV4
-0.1
-0.1 34 34 0
0.00
%TW/EFPY 3R14 42 102 AV5 0.02
-0.15 28 29 1
0.37
%TW/EFPY 3R14 42 103 AV3
-0.15
-0.22 12 11
-1
-0.37
%TW/EFPY 3R14 42 103 AV4
-0.2
-0.07 13 11
-2
-0.74
%TW/EFPY 3R14 43 20 AV6
-0.17
-0.17 10 10 0
0.00
%TW/EFPY 3R14 43 49 AV2 0.02 0
11 11 0
0.00
%TW/EFPY 3R14 43 49 AV3 0
0.17 12 12 0
0.00
%TW/EFPY 3R14 43 64 AV3
-0.17
-0.22 13 13 0
0.00
%TW/EFPY 3R14 43 64 AV4
-0.3
-0.17 12 11
-1
-0.37
%TW/EFPY 3R14 43 64 AV5
-0.07
-0.1 19 17
-2
-0.74
%TW/EFPY 3R14 43 80 AV3 0
-0.12 20 19
-1
-0.37
%TW/EFPY 3R14 43 80 AV4
-0.05
-0.1 21 21 0
0.00
%TW/EFPY 3R14 43 80 AV5
-0.1
-0.12 12 12 0
0.00
%TW/EFPY 3R14 43 80 AV6 0
-0.1 17 16
-1
-0.37
%TW/EFPY 3R14 43 87 AV2 0.12 0.02 21 20
-1
-0.37
%TW/EFPY 3R14 43 87 AV4
-0.02
-0.1 22 21
-1
-0.37
%TW/EFPY 3R14 43 87 AV5
-0.07
-0.15 23 22
-1
-0.37
%TW/EFPY 3R14 43 98 AV4 0.05 0
18 17
-1
-0.37
%TW/EFPY 3R14 43 98 AV5
-0.02
-0.12 15 14
-1
-0.37
%TW/EFPY 3R14 43 99 AV4
-0.02
-0.1 20 19
-1
-0.37
%TW/EFPY 3R14 43 101 AV3
-0.02
-0.05 13 11
-2
-0.74
%TW/EFPY 3R14 43 101 AV4
-0.15
-0.05 22 21
-1
-0.37
%TW/EFPY 3R14 43 101 AV5 0
-0.07 21 20
-1
-0.37
%TW/EFPY 3R14 43 102 AV4 0
-0.1 21 22 1
0.37
%TW/EFPY 3R14 43 102 AV5 0
-0.1 20 18
-2
-0.74
%TW/EFPY 3R14 44 64 AV2 0.02 0.02 30 31 1
0.37
%TW/EFPY 3R14 44 64 AV3
-0.1
-0.29 19 21 2
0.74
%TW/EFPY 3R14 44 74 AV4
-0.1
-0.07 16 16 0
0.00
%TW/EFPY 3R14 44 74 AV5 0.25 0.02 24 24 0
0.00
%TW/EFPY 3R14 44 74 AV6 0.05 0.07 21 21 0
0.00
%TW/EFPY 3R14 44 i.75 AV3 0.05 0
15 14
-1
-0.37
%TW/EFPY 3R14-.
44. ý96 AV2 0
-0.07 16 15
.1
-0.37
%TW/EFPY 3R14 44 96 AV4 0
-0.07 17 18 1
0.37
%TW/EFPY 3R14 44 96 AV5 0
0.05 13 13 0
0.00
%TW/EFPY 3R14 44 98 AV1
-0.07
-0.1 13 13 0
0.00
%TW/EFPY 3R14 44 98 AV2
-0.05
-0.07 24 24 0
0.00
%TW/EFPY
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 10 of 20 New Outage Row Col Elev Old Offset New Offset Old %TW New %TW Change Growth Rate 3R14 44 98 AV4 0
-0.05 19 15
-4
-1.48
%TW/EFPY 3R14 45 45 AV3
-0.1
-0.27 10 11 1
0.37
%TW/EFPY 3R14 45 71 AV2 0.07 0.12 13 14 1
0.37
%TW/EFPY 3R14 45 98 AV4 0.05 0
24 23
-1
-0.37
%TW/EFPY 3R14 45 98 AV6
-0.07 0
15 14
-1
-0.37
%TW/EFPY 3R14 45 99 AV4
-0.12
-0.07 17 17 0
0.00
%TW/EFPY 3R14 45 99 AV5 0
-0.05 13 12
-1
-0.37
%TW/EFPY 3R14 46 99 AV2 0.05 0
13 13 0
0.00
%TW/EFPY 3R14 46 99 AV4
-0.07
-0.12 14 13
-1
-0.37 %TW/EFPY 3R14 46 99 AV5 0.02
-0.15 22 20
-2
-0.74 %TW/EFPY 3R14 47 98 AV3 0
-0.12 14 15 1
0.37
%TW/EFPY 3R14 47 99 AV6 0
-0.17 15 15 0
0.00
%TW/EFPY 3R14 48 25 AV3
-0.07
-0.2 11 10
-1
-0.37
%TW/EFPY 3R14 48 26 AV2 0.07
-0.1 11 10
-1
-0.37
%TW/EFPY 3R14 48 26 AV6 0
-0.12 12 12 0
0.00
%TW/EFPY 3R14 49 95 AV4
-0.05
-0.15 13 11
-2
-0.74 %TW/EFPY 3R14 50 29 AV5
-0.1
-0.05 14 13
-1
-0.37 %TW/EFPY 3R14 50 44 AV4
-0.1
-0.1 15 15 0
0.00
%TW/EFPY 3R14 50 44 AV5
-0.02
-0.07 31 32 1
0.37
%TW/EFPY 3R14 50 50 AV4
-0.22
-0.05 18 20 2
0.74
%TW/EFPY 3R14 50 76 AV2
-0.12 0
23 22
-1
-0.37
%TW/EFPY 3R14 50 76 AV3
-0.05
-0.24 18 18 0
0.00
%TW/EFPY 3R14 50 82 AV2 0.07 0
18 20 2
0.74
%TW/EFPY 3R14 50 82 AV3
-0.15
-0.1 22 24 2
0.74
%TW/EFPY 3R14 50 82 AV4
-0.12
-0.2 20 21 1
0.37 !%TW/EFPY 3R14 50 86 AV2
-0.07 0
14 14 0
0.00
%TW/EFPY 3R14 50 87 AV2 0.02
-0.05 26 28 2
0.74
%TW/EFPY 3R14 50 87 AV3
-0.07
-0.1 14 15 1
0.37
%TW/EFPY 3R14 50 87 AV5 0
0 13 12
-1
-0.37 %TW/EFPY 3R14 50 90 AV2 0.02 0
36 38 2
0.74
%TW/EFPY 3R14 50 90 AV3
-0.05
-0.17 35 36 1
0.37
%TW/EFPY 3R14 50 90 AV4
-0.07
-0.17 19 16
-3
-1.11
%TW/EFPY 3R14 50 90 AV5 0.05 0
16 15
-1
-0.37 %TW/EFPY 3R14 50 91 AV2 0.02
-0.07 35 37 2
0.74
%TW/EFPY 3R14 50 91 AV3
-0.2
-0.24 31 33 2
0.74
%TW/EFPY 3R14 50 91 AV4
-0.02
-0.15 16 16 0
0.00
%TW/EFPY 3R14 50 91 AV5 0.6 0
13 13 0
0.00
%TW/EFPY 3R14 51 64 AV3 0.07
-0.1 14 17 3
1.11
%TW/EFPY 3R14 51 65 AV5 0
-0.29 16 15
-1
-0.37 %TW/EFPY 3R14 51 66 AV2 0.07
-0.02 13 12
-1
-0.37 %TW/EFPY 3R14 51 66 AV3 0.05
-0.12 13 12
-1
-0.37 %TW/EFPY 3R14 52 66 AV4 0.6
-0.05 28 28 0
0.00
%TW/EFPY 3R14 52 90 AV3
-0.05
-0.17 13 12
-1
-0.37 %TW/EFPY 3R14" 52 90 AV4
-0.07
-0.1 15 13
-2
-0.74 %TW/EFPY 3R14" 53 81 AV1 0
-0.05 14
'15 1
0.37
%TW/EFPY 3R14 53 81 AV3 0
-0.02 30 30 0
0.00
%TW/EFPY 3R14 54 35 AV5
-0.07
-0.07 20 22 2
0.74
%TW/EFPY 3R14 54 49 AV2
-0.12 0.07 15 15 0
0.00
%TW/EFPY 3R14 54 49 AV3 0.15 0.17 12 13 1
0.37
%TW/EFPY 3R14 59 64 AV6 0.49 0.52 10 10 0
0.00
%TW/EFPY
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 11 of 20 Table 4 Steam Generator A - Newly Reported AVB Wear Indications SG New Outage Row Col Elev New Offset New %TW A
3R14 5
48 08H 11.93 11 A
3R14 5
48 08H 11.4 5
A 3R14 12 121 AV6
-0.04 10 A
3R14 22 78 AV1
-0.03 13 A
3R14 29 12 AV2
-0.1 14 A
3R14 29 67 AVl
-0.02 11 A
3R14 33 111 AV6
-0.1 10 A
3R14 34 73 AV3
-0.22 12 A
3R14 34 73 AV6 0.07 10 A
3R14 35 49 AV2 0.2 12 A
3R14 35 49 AV6
-0.05 11 A
3R14 35 71 AV6
-0.1 12 A
3R14 35 77 AV5
-0.12 12 A
3R14 35 90 AV2 0.02 10 A
3R14 37 72 AV3
-0.1 11 A
3R14 37 102 AV4 0
10 A
3R14 38 52 AV3
-0.12 10 A
3R14 39 57 AV5 0.15 12 A
3R14 39 70 AV4
-0.22 10 A
3R14 39 71 AV2
-0.1 12 A
3R14 39 71 AV6
-0.22 17 A
3R14 39 75 AV4
-0.2 11 A
3R14 40 64 AV4
-0.12 18 A
3R14 40 67 AV2 0.02 11 A
3R14 40 86 AV2
-0.1 12 A
3R14 40 102 AV4 0.02 11 A
3R14 41 74 AV5 0
11 A
3R14 41 100 AV3
-0.17 12 A
3R14 41 101 AV5
-0.15 12 A
3R14 42 20 AV6 0
11 A
3R14 42 37 AV3 0
11 A
3R14 42 37 AV6
-0.25 14 A
3R14 42 63 AV2
-0.12 10 A
3R14 42 85 AV2 0.15 13 A
3R14 43 76 AV4
-0.15 10 A
3R14 43 96 AV5 0
11 A
3R14 43 103 AV5 0
13 A
3R14 45 98 AV5 0
12 A
3R14 46 97 AV5
-0.05 11 A
3R14 46 98 AV5
-0.15 10 A
3R14 48 96 AV6 0.02 13 A
3R14 50 29.,
AV4
-0.12 11 A
3R14
- 50.
44ý-
AV3
-0.1 11 A
3R14 50 44 AV6
-0.15 12 A
3R14 51 65 AV3
-0.24 11 A
3R14 51 65 AV4
-0.17 12 A
3R14 51 79 AV3 0.05 11 A
3R14 54 35 AV4 0
17 A-3R14 56--
4-1--
AV2--
0 11 A
3R14 58 54 AV1 0.2 12
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 12 of 20 Table 5 Steam Generator C-Repeat AVB Wear Indications New Outage Row Col Elev Old Offset New Offset Old %TW New %TW Change Growth Rate 3R14 15 66 AV1
-0.32
-0.06 11 10
-1
-0.37
%TW/EFPY 3R14 25 8
AV2
-0.17 0.31 10 10 0
0.00
%TW/EFPY 3R14 25 116 AV6 0.19 0.37 19 18
-1
-0.37
%TW/EFPY 3R14 34 14 AV2
-0.17 0.05 8
10 2
0.74
%TW/EFPY 3R14 34 14 AV5 0.02
-0.07 11 12 1
0.37
%TW/EFPY 3R14 36 15 AV5 0
0.02 16 12
-4
-1.48
%TW/EFPY 3R14 36 15 AV6 0.2 0
15 13
-2
-0.74
%TW/EFPY 3R14 37 15 AV2
-0.1
-0.17 24 20
-4
-1.48
%TW/EFPY 3R14 37 15 AV3
-0.05 0
11 11 0
0.00
%TW/EFPY 3R14 37 15 AV4 0
-0.05 9
10 1
0.37
%TW/EFPY 3R14 37 15 AV5 0.07 0.02 27 27 0
0.00
%TW/EFPY 3R14 37 15 AV6 0.15 0.09 12 14 2
0.74
%TW/EFPY 3R14 37 88 AV3
-0.02
-0.1 11 11 0
0.00
%TW/EFPY 3R14 39 17 AV2 0.02 0
14 14 0
0.00
%TW/EFPY 3R14 39 17 AV3
-0.02
-0.09 11 11 0
0.00
%TW/EFPY 3R14 39 17 AV4
-0.02
-0.09 17 17 0
0.00
%TW/EFPY 3R14 39 17 AV5 0.05 0
20 19
-1
-0.37
%TW/EFPY 3R14 39 17 AV6 0.12 0
14 14 0
0.00
%TVV/EFPY 3R14 39 79 AV3
-0.44
-0.54 17 17 0
0.00 0%1W/EFPY 3R14 41 42 AV3 0.05
-0.05 21 20
-1
-0.37
%TW/EFPY 3R14 41 54 AV1 0.07 0.05 11 10
-1
-0.37 %TW/EFPY 3R14 41 54 AV3 0.02
-0.28 17 19 2
0.74
%TW/EFPY 3R14 41 54 AV4
-0.02
-0.07 15 16 1
0.37
%TW/EFPY 3R14 41 54 AV5 0.02 0
20 22 2
0.74
%TW/EFPY 3R14 41 62 AV2
-0.22
-0.31 22 25 3
1.11
%TW/EFPY 3R14 41 62 AV3
-0.44
-0.55 15 18 3
1.11
%TW/EFPY 3R14 41 62 AV3 0.24 0.34 22 26 4
1.48
%TW/EFPY 3R14 41 62 AV4
-0.24
-0.53 18 19 1
0.37
%TW/EFPY 3R14 41 62 AV4 0.44 0.22 22 27 5
1.86
%TW/EFPY 3R14 41 62 AV5
-0.24
-0.22 29 33 4
1.48
%TW/EFPY 3R14 41 62 AV6 0
-0.29 13 14 1
0.37
%TW/EFPY 3R14 41 65 AV4 0.34 0.34 15 19 4
1.48
%TW/EFPY 3R14 41 65 AV5 0
-0.07 18 22 4
1.48
%TW/EFPY 3R14 41 105 AV6 0.12
-0.07 13 11
-2
-0.74 %TW/EFPY 3R14 42 20 AV2
-0.1
-0.02 16 14
-2
-0.74 %TW/EFPY 3R14 42 20 AV3
-0.1
-0.09 24 21
-3
-1.11
%TW/EFPY 3R14 42 20 AV4
-0.12
-0.09 25 23
-2
-0.74 %TW/EFPY 3R14 42 20 AV5
-0.05
-0.07 25 23
-2
-0.74 %TW/EFPY 3R14 42 20 AV6
-0.05
-0.12 17 15
-2
-0.74 %TW/EFPY 3R14 42 23 AV3 0
0 23 19
-4
-1.48
%TW/EFPY 3R14 42 23 AV4 0
0 34 29
-5
-1.86
%TW/EFPY 3R14 42 23 AV5 0
0 31 28
-3
-1.11
%TW/EFPY 3R14 45 100 AV5
-0.2
-0.17 9
8
-1
-0.37
%TW/EFPY 3R14 45 100 AV6 0
0.07 11 10
-1
-0.37
%TW/EFPY 3R14 46 33 AV6 0.51 0.53 18 19 1
0.37
%TW/EFPY 3R14 47 99 AV6
-0.07
-0.02 17 13
-4
-1.48
%TW/EFPY 3R14 48 98 AV3 0
0 12 10
-2
-0.74 %TW/EFPY 3R14 48 98 AV4 0
0 12 9
-3
-1.11
%TW/EFPY 3R14 48 98 AV6
-0.15 0
-.. 10 10 0
0.00
%TW/EFPY 3R14 49 96 AV5 0
-0.17 20 19
-1
-0.37 %TW/EFPY
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 13 of 20 New Outage Row Col Elev Old Offset New Offset Old %TW New %TW Change Growth Rate 3R14 49 96 AV6 0
-0.17 26 23
-3
-1.11
%TW/EFPY 3R14 50 28 AV2 0.1 0.15 10 10 0
0.00
%TW/EFPY 3R14 50 28 AV5 0.05
-0.05 18 20 2
0.74
%TW/EFPY 3R14 50 93 AV5
-0.27
-0.22 12 11
-1
-0.37
%TW/EFPY 3R14 50 93 AV6
-0.12 0
26 24
-2
-0.74
%TW/EFPY 3R14 54 35 AV5
-0.12 0.02 14 14 0
0.00
%TW/EFPY 3R14 54 36 AV4 0
0 18 18 0
0.00
%TW/EFPY 3R14 54 36 AV5 0.05
-0.15 11 10
-1
-0.37
%TW/EFPY 3R14 54 86 AV1 0.12
-0.12 10 10 0
0.00
%TW/EFPY 3R14 56 41 AV2 0.05 0
12 10
-2
-0.74
%TW/EFPY 3R14 56 41 AV4
-0.12
-0.1 14 15 1
0.37
%TW/EFPY 3R14 56 41 AV5 0.02 0
23 23 0
0.00
%TW/EFPY 3R14 56 41 AV6 0
0 13 12
-1
-0.37
%TW/EFPY 3R14 56 44 AV4 0.02 0
7 7
0 0.00
%TW/EFPY
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 14 of 20 Table 6 Steam Generator C - Newly Reported AVB Wear Indications SG New Outage Row Col Elev New Offset New %TW C
3R14 42 103 AV3
-0.1 13 C
3R14 45 57 AV2
-0.05 11 C
3R14 51 92 AV6 0.34 12 C
3R14 58 49 AV5
-0.19 13
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 15 of 20 Table 7 SG A 3R14 Tube Degradation Summary (Non AVB Wear)
I I Axial 1 Circ. 11 Depth T[1Foreign11 Length Length Maximum Reported Initially Signal History Object 3R14 FOTS Plugged SG w
ETSS in)
(in)
Depth 3R14 PriorOutage Reported Comment Cause Remaining? FK Number Stabilized?
A 2
17 05H-0.74 27901.1 0.24 0.38 24 na 3R14 Present in 2008 Foreign Object No 13 No bobbin data Wear A
3 112 06C-0.92 27901.1 0.30 0.38 32 35%T1 3R12 Foreign Object No 7
No (3R12)
Wear A
6 122 TSH+4.01 27901.1 0.32 0.33 15 15%TW 3R08 Foreign Object No na No (3R12)
Wear A
7 3
TSC+0.03 27901.1 0.27 0.42 26 28%TW 3R08 Foreign Object No na No (3R12)
Wear A
15 68 07C-0.86 27901.1 0.33 0.38 31 na 3R14 Present in 2008 Foreign Object No 16 No bobbin data Wear A
18 94 03H-0.46 96910.1 0.32 0.44 11 na 3R14 Present in 2008 Tube Support na 15 No bobbin data Wear A
20 97 08C-0.95 27901.1 0.27 0.36 22 na 3R14 No signal in Foreign Object No 19 No history Wear A
23 76 03C+0.24 96910.1 0.30 0.29 11 na" 3R14 Present in 1999 Tube Support na 20 No bobbin data Wear A
24 11 TSH+0.09 27901.1 0.27 0.35 25 26%TW 3R08 Foreign Object No na No (3R12)
Wear A
28 112 011H+0.44 27901.1 0.46 0.48 37 36%'W 3R10 Foreign Object No na No (3R12)
Wear A
29 109 TSC+0.01 27901.1 0.30 0.33 23 21%TN 3R08 Foreign Object No I
No (3R12)
Wear TSC+0.04 27901.1 0.30 0.35 21 23%TW 3R08 Foreign Object No 1
No (3R12)
Wear A
29 110 111H+0.52 27902.1 0.59 0.40 14 na 3R14 Present in 2008 Foreign Object No 18 No F
bobbin data Wear A
43 103 TSC+0.69 27901.1 0.27 0.31 17 18%2W 3R08 Foreign Object No na No (3R12)
Wear A
46 83 06C-0.59 27903.1 0.33 0.31 72 na 3R14 No Foreign Object Note 1 17 Yes SL=0.22 SD=61.4 Wear A
47 24 01C+0.96 27901.1 0.50 0.45 29 32%TW 3R10 Foreign Object No 8
No (3R12)
Wear A
47 25 01C+1.09 27901.1 0.58 0.51 30 33%rw 3R10 Foreign Object No 8
No (3R12)
Wear A
58 47 TSC+0.50 27901.1 0.32 0.36 18 21%TW 3R12 Sled na 10 No (3R12)
A 58 76 TSC+0.46 27901.1 0.30 0.35 18 (3RT2N 3R12 Sled na 9
No 19___
(3R12)
A 59 60 08H-1.73 27901.1 0.29 0.38 25 26%TW 3R10 Foreign Object No na No (3R12)
Wear SL = Structurally Equivalent Length SD = Structurally Equivalent Depth Note 1.Are a is not accessible by SSI Absence of part in the region cannot bedefinitje.........b eddy current Tube was consemeively stabilized and plugged since the absence ofa.foreoign
ýobject cannot be confirmed by an SSI examination.
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 16 of 20 Table 8 SG C 3R14 Tube Degradation Summary (Non AVB Wear)
Axial Crc.
Dep.th [
Foreign Length Length Maximum Reported Initially Signal History Object 3R14 FOTS Plugged &
SG__
o!__ocationTSS__in)_(_n}
eptM314 PriorOutage Reported Comment Cause Rema n ng? FKNumber Stab lized?
C 1
5 TSC+3.22 27901.1 0.75 0.44 26 26%1W 3R08 Known FO Yes I
No (3R12)
Lodged, edfied C
1 73 TSC+19.32 27901.1 0.32 0.35 16 17%'N 3R10 Foreign Object No na No (3R12)
Wear C
1 102 01C+4.70 27901.1 0.32 0.33 17 18%TW 3R10 Foreign Object No na No (3R12)
Wear C
2 103 02C-6.80 27901.1 0.32 0.35 17 18%TW 3R10 Foreign Object No na No (3R12)
Wear C
3 3
04C+ 16.57 21998.1 0.30 0.33 20 25%TW 3R12 MBM na na No (3R12)
C 13 120 08C-0.73 27901.1 0.27 0.42 31 na 3R14 Present in 2008 Foreign Object No 19 No I Ibobbin data Wear C
20 72 02H+5.56 21998.1 0.30 0.33 14 20%TW 3R12 Fabrication na 13 No (3R12)
TSC+0.52 27901.1 0.27 0.37 21 19%TW 3R12 Sled na No (3R12) 15%'1W TSC+0.50 27901.1 0.27 0.31 16 3R12 Sled na No (3R12) 19%115 C
36 13 TSC+0.47 27901.1 0.27 0.37 19 3R12 Sled na No (3R12) 16%"iW TSC+0.33 27901.1 0.13 0.29 18 3R12 Sled na No (3R12)
Overall Dimensions 0.38 1.06 21 C
36 75 08C-0.87 27901.1 0.35 0.39 26 26%TW 3R10 Foreign Object No na No (3R12)
Wear 19%rw C
38 15 TSC+0.49 27901.1 0.30 0.39 19 3R10 Sled na na No (3R12)
C 44 38 05H+13.72 21998.1 0.21 0.34 14 20%1'N 3R12 Fabrication na 14 No (3R12)
C 44 102 TSC+0.50 27901.1 0.19 0.29 18 17%7W 3R12 Sled na 16 No (3R12)
C 47 34 TSH+0.38 27901.1 0.27 0.35 18 18%TW 3R12 Foreign Object No 10 No (3R12)
Wear C
47 61 06C-0.70 27901.1 0.24 0.35 24 na 3R14 Present in 2008 Foreign Object No 20 No bobbin data Wear C
54 64 TSH+0.15 27901.1 0.27 0.35 24 24%1W 3R08 Foreign Object No 5
No (3R12)
Wear C
55 68 TSH+0.62 27901.1 0.29 0.33 21 21%TW 3R08 Foreign Object No na No (3R12)
Wear
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 17 of 20 Table 8 (continued)
SG C 3R14 Tube Degradation Summary (Non AVB Wear)
Row Axial Circ.
I Depth
[
Foreign 1
T Length Length Maximum Reported Initially Signal History Object 3R14 FOTS Plugged SG Cot Location ETSS (in)
(in)
IDepth 3R14 PriorOutageJ Reported Comment Cause Remaining? FKNumber Stabilized?
C 56 41 TSH+0.51 27901.1 0.38 0.81 19 na 3R14 Present in 2002 Foreign Object No 22 No bobbin data Wear C
56 69 TSH+0.03 27901.1 0.29 0.44 29 29%TW 3R10 Foreign Object No na No (3R12)
Wear TSC+0.51 27901.1 0.19 0.29 17 17%TW Sled na na No (3R12) 3R08 C
56 82 TSC+0.48 27901.1 0.27 0.33 16 16%TW Sled na na No (3R12)
O~erall Dimensions 0.27 0.85 17 C
57 44 TSH+0.48 27901.1 0.27 0.37 18 19%T3R10 Sled na na No I
(3R12)
TSH+0.50 27901.1 0.29 0.37 17 18%TW 3R10 Sled na na No (3R12)
C 58 48 (3R12)
TSC+0.56 27901.1 0.35 0.37 21 21%TW 3R10 Sled na na No (3R12) 18%trw TSH+0.52 27901.1 0.35 0.44 17 3R10 Sled na na No (3R12)
C 58 49 I
I (3R12 TSC+0.56 27901.1 0.35 0.44 20 17%W 3R10 Sled na na No (3R12)
TSH+0.47 27901.1 0.27 0.33 21 20%1W 3R10 Sled na na No (3R12)
C 58 76
-sc+0.54 27901.1 0.30 0.33 16 19%TW 3R12 Sled na 18 No (3R 12)
C 59 55 TSC+0.58 27901.1 0.30 0.35 17 17%TN 3R12 Sled na 12 No (3R 12)
Present in '02 Foreign Object C
59 59 TSC+0.51 27901.1 0.32 0.35 17 na 3R14 bobbin data; PLP Wear No 21 No
'02, `05 & `08 18%TW C
59 68 TSH+0.51 27901.1 0.32 0.37 18 (3R12 3R10 Sled na na No I
I I
I (3R12)
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 18 of 20
- e. Number of tubes plugged during the inspection outage for each active degradation mechanism, Table 9 provides the quantity of tubes plugged by degradation mechanism. Eleven tubes were removed from service during 3R14; all were in SG A. Seven tubes were plugged due to a condition in which the bottom of the expansion transition (BET) was located more than one inch below the top of tubesheet (TTS). These tubes were plugged to fulfill a regulatory commitment related to the One-Time Alternate Repair Criteria (License Amendment 249, ADAMS Ascension No. ML100770358). One tube with AVB wear (sized at 37 %TW) and a second tube with AVB wear (sized at 38 %TW) were discretionarily removed from service.
One tube with two shallow AVB wear indications (11 %TW and 5 %TW) at the apex of the tube near an AVB intersection point was removed from service discretionarily. One tube had an indication of foreign object wear with a maximum depth of 72 %TW as determined by Electric Power Research Institute, Examination Technique Specification Sheet 27903.1.
The structural depth of the indication was 61.4 %TW and the structural length was 0.22 inches. The tube was stabilized with a u-bend stabilizer and plugged.
Table 9 Number of Tubes Plugged by Degradation Mechanism During 3R14 DEGRADATION SG A SG B SG C SG D AVB Wear __37%TW 2
0 0
0 (discretionary)
AVB Wear <37%TW 1
0 0
0 (discretionary)
Non-Support Wear 1
0 0
0
>40% TW Expansion Transition 7
0 0
0 Below TTS - 1" I
- f. Total number and percentage of tubes plugged to date, Table 10 provides the total number of tubes plugged to date and the percentages.
Table 10
-Number Tubes Plugged To Date
-- SGA SG B SG C SG D Prior to 3R14 38 20 22 86 During 3R14 11 0
0 0
Total After 3R14 49 20 22 86 Percentage
-0.871 0.355 0.391 1.529-Overall Percentage 0.787
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 19 of 20
- g. The results of condition monitoring, including the results of tube pulls and in-situ
- testing, No tubes were pulled and no in-situ pressure tests were performed. The condition monitoring assessment concluded that the structural integrity, operational leakage and accident induced leakage performance criteria were not exceeded during the operating interval preceding 3R14.
- h. The effective plugging percentage for all plugging in each SG, Since no sleeving has been performed in the MPS3 steam generators, the effective plugging percentage is the same as the actual plugging percentage (see (f)).
- i. During Refueling Outage 14 and the subsequent operating cycle, 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, No primary to secondary SG leakage was reported during Cycle 14.
- j.
During Refueling Outage 14 and the subsequent operating cycle, the calculated accident induced leakage rate from the portion of the tubes below 15.2 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 2.49 times the maximum operational primary to secondary leakage rate, the report should describe how it was determined; For the purposes of condition monitoring assessment, and in accordance with the Temporary Alternate Repair Criteria (License Amendment 252, ADAMS Ascension No.
ML112580517), the accident leakage attributed to degradation within the tubesheet below the H* dimension must be estimated by applying a factor of 2.49 to the operational leakage.
There was no recordable operational leakage during Cycle 14; hence, the leakage from this degradation during a limiting accident would have been zero (i.e., 2.49 x 0).
- k. During Refueling Outage 14 and the subsequent operating cycle, 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 was performed on SG A and SG C using the bobbin coil data during 3R14. There was no detection of slippage during the 3R14 examination.
Serial No.16-127 Request for Withholding Proprietary Information O Page2 of2 Serial No.12-123
'--'~"-"......_,.......,,.._.....~_...~-"-"'""'"_,..._....._,,_ Docket No, 50-423 Figura*1 3R 14 180-Day SG Report 1 Page 20 of 20 STEAM GENERATOR ARRANGEMENT
[REDACTED]
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Repork ENCLOSURE 2 Acronyms MILLSTONE POWER STATION UNIT 3 DOMINION NUCLEAR CONNECTICUT, INC.
Serial No.12-123 Docket No. 50-423 3R14 180-Day SG Report, Page 2 of 2 Acronyms AVB BLG C
CL DDH DDI DDS DNG DNT ECT EFPY EPRI ETSS F/L FAC FDB FO FOTS HL IGA INF INR LPI LPR LPS MRPC NDD NDE NDF NEI NQH NQI OA Anti-Vibration Bar Bulge Column Cold Leg Ding or Dent Signal - Reviewed in History Distorted Dent or Ding Indication Ding or Dent Signal - Non-Confirming w/RPC Ding Dent Indication Eddy Current Test Effective Full Power Years Electric Power Research Institute Examination Technique Specification Sheet Full Length Flow Accelerated Corrosion Flow Distribution Baffle Foreign Object Foreign Object Tracking System Hot Leg Intergranular Attack Indication Not Found Indication Not Reportable Loose Part Indication Loose Part Removed Loose Part Signal Motorized Rotating Pancake Coil No Detectable Degradation Nondestructive Examination No Degradation Found Nuclear Energy Institute Non-quantifiable Indication -
Reviewed in History Non-quantifiable Indication Operational Assessment ODSCC Outer Diameter Stress Corrosion Cracking OVR Above Tubesheet Over Expansion OXP Over Expansion PID Positive Identification PLG Tube is plugged PLP Possible Loose Part PTE Partial Tubesheet Expansion PWR Pressurized Water Reactor PWSCC Primary Water Stress Corrosion Cracking R
Row RAD Retest Analyst Discretion RBD Retest - Bad Data RIC Retest - Incomplete RRT Retest - Restricted Tube S/N Signal-to-Noise Ratio SAI Single Axial Indication SCC Stress Corrosion Cracking SCI Single Circumferential Indication SG Steam Generator SLG SSI SVI TEC TEH TFH TFS TSC TSH TTS TWD
%TW VOL Sludge Secondary Side Inspection Single Volumetric Indication Tube End Cold-leg Tube End Hot-leg Tangential Flaw-Like Signal -
Reviewed in History Tangential Flaw-Like Signal - Non-Confirming w/RPC Top of Tubesheet Cold-leg Top of Tubesheet Hot-leg Top of Tubesheet Through-Wall Depth Percent Through-Wall Volumetric Indication