View source for W3F1-2003-0021, 12-Month Special Report SR-03-001-00 on the 11th Refueling Steam Generator Tube Inservice Inspection

{{Adams
| number = ML031050419
| issue date = 04/10/2003
| title = 12-Month Special Report SR-03-001-00 on the 11th Refueling Steam Generator Tube Inservice Inspection
| author name = Peters K
| author affiliation = Entergy Nuclear South, Entergy Operations, Inc
| addressee name = 
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000382
| license number = NPF-038
| contact person = 
| case reference number = W3F1-2003-0021
| document type = Inservice/Preservice Inspection and Test Report, Letter type:W
| page count = 22
}}

=Text=
{{#Wiki_filter:Entergy Nuclear South Entergy Operations, Inc
- ~_17265                                                                            River Road Killona, LA 70066 Enteh y                                                               Tel 504 739 6440 Fax 504 739 6698 kpeters~entergy corn Ken Peters Director, Nuclear Safety Assurance Waterford 3 W3Fl-2003-0021 A4.05 PR April 10, 2003 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555

==Subject:==
Waterford 3 SES Docket No. 50-382 License No. NPF-38 12-Month Special Report SR-03-001-00 on the 11th Refueling Steam Generator Tube Inservice Inspection Gentlemen:
Attached is Special Report (SR) Number SR-03-001-00 for Entergy Operations, Inc (EOI) Waterford Steam Electric Station Unit 3. This report provides the complete results of the Refuel 11 Steam Generator Tube Inservice Inspection. This special report is being submitted in accordance with Technical Specifications 4.4.4.5.b and 6.9.2.
Very truly yours, Peters Director, Nuclear Safety Assurance KJP/RLW/ssf Attachment cc:           E.W. Merschoff, NRC Region IV, N. Kalyanam, NRC-NRR, J. Smith, N.S. Reynolds, NRC Resident Inspectors Office 1P04

SPECIAL REPORT SR-03-001 -00 STEAM GENERATOR EDDY CURRNT EXAMINATION (11TH REFUELING OUTAGE)

==1.0       INTRODUCTION==

This report is submitted in accordance with Technical Specification 4.4.4.5.b. that requires the complete eddy current test results from Refuel #11 to be submitted in a special report pursuant to Technical Specification 6.9.2, within 12 months following the inspection.
The report shall include:
: 1.      Number and extent of tubes inspected.
: 2.      Location and percent of wall-thickness penetration for each indication of an imperfection.
: 3.      Identification of tubes plugged or sleeved.
The eddy current testing examination program was performed to meet and exceed the requirements of Technical Specification 3/4.4.4. Waterford 3 performed all S/G eddy current testing examinations in accordance with EPRI "PWR Steam Generator Examination Guidelines" and its Appendix H qualified techniques. Previous reports contained additional detail as was required in the annual report in revision 0 of NEI 97-06. The current revision (Rev. 1) no longer requires this information; therefore, it has been removed from the format of the report.
2.0       Steam Generator Design The Waterford 3 Model 70 (3410 MWT) re-circulating steam generators were designed and fabricated by Nuclear Steam System Supplier Combustion Engineering (CE), Inc. in accordance with ASME Code, Section III NB for Class I vessels. The Waterford 3 steam generators each consist of 9,350 high temperature mill annealed Inconel 600 U-tubes arranged in a one-inch inner diameter triangular pitch pattern representing 103,574 ft2 of heat transfer area. The U-tubes are 3/4" O.D. by 0.048" nominal wall thickness explosively expanded the full depth of the tubesheet (CE's Expansion Process) and welded to the primary cladding. The secondary tube bundle support structure consists of carbon steel eggcrates. The secondary supports are arranged in the following order:
* seven full horizontal eggcrate supports
* six horizontal partial eggcrate supports
* two anti-vibration straps (hot and cold batwings) seven vertical straps RF1 SpecialReport doc S/G Eddy Current Inspecton Page 1 of 21

3.0       Inspection Results 3.1      RF1 I Scope (Number and Extent Tested)
The Refuel #11 S/G eddy current testing (ECT) program consisted of the following inspection plans in Table 3.1:
Table 3.1 RF11 ECT Inspection SG #1 ECT Examination Type       Inspections      % Scope       Extent Tested Conducted Bobbin                             8932           100         TEH to TEC RPC ET HL                          8932           100       +2 to -5" of TTS Small Radius U-bends (1-3)          186           100         07H to 07C Previous/New Dents >2 volt           63            49              NA Previous/New Dings >5 volt           58            29              NA Previous/New Wear                   132            37              NA Special Interest                    521                            NA SG #2 ECT Examination Type        Inspections     % Scope       Extent Tested Conducted Bobbin                             8926           100         TEH to TEC RPC ET HL                          8926           100       +2 to -5" of TTS Small Radius U-bends                188           100         07H to 07C Previous/New Dents >2 volt           96            59              NA Previous/New Dings >5 volt          100            45              NA Previous/New Wear                   109            32              NA Special Interest                    469                            NA NOTE: The U-Bend Low Row (1-3) region of the 186 and 188 respective tubes in each S/G were examined with "+Pt." and straight sections inspected with bobbin coil.
RFl 1SpecialReporLdoc SIG Eddy Current Inspection Page 2 of 21

3.2       Degradation Mechanisms Identified Table 3.2 list the degradation mechanisms identified during the RF1 1 inspection:
Table 3.2 Degradation Mechanisms Identified in RF11 Location/Mechanism                SG #1             SG #2 AVBITSP Wear (old)                 274               257 AVB/TSP Wear (new)                  83                81 TTS Axial Cracking                  10                 1 TTS Circumferential                 13                 3 Cracking Eggcrate Axial Cracking              2                 0 Volumetric                           1                 3 Loose Part Wear                      0                 0 DINGS                              560               706 Dents                              129               163 3.3       Tube Integrity Acceptable tube integrity was demonstrated at the end of cycle 11 and condition monitoring requirements on burst pressure (3ANOP) and accident leakage rates were satisfied for all forms of degradation mechanisms identified during the Refuel #11 S/G eddy current testing.
All indications identified were well below their associated structural limits. The Waterford 3 Refuel #11 Condition Monitoring Report was documented via Westinghouse Document SG-SGDA-02-12, "Steam Generator Tube Integrity and Condition Monitoring Report for Waterford 3, RF11."
As part of Waterford 3's adherence to perform In-Situ Screening in accordance with EPRI, TR-107620, "Steam Generator In-Situ Pressure Test Guidelines", Rev. 1, all indications identified on attached Tables 1 and 2 were screened with no test required.
RF11 SpecialReport doc SIG Eddy Current Inspecton Page 3 of 21

4.0       Location and Percent of Wall-Thickness Penetration for Each Indication of an Imperfection This data is summarized in the attached Tables 3 and 4. The only flaws sized and left in service are for wear.
5.0       Percentage of Tubes Plugged or Sleeved Table 4.1 list the repairs made in RF11 and the cumulative repairs to date:
Table 4.1 Tubes Repaired to Date SG #1         SG #1     SG #2        SG #2 Plugs       % Plugged   Plugs      % Plugged Prior to RF11              418          4.47 %     424         4.54 %
RF11                   26            N/A       10           N/A Total                 444          4.75 %     434         4.64 %
Sleeved Tubes                  0            N/A        0           N/A On April 5, 2002 Waterford 3 successfully completed all S/G eddy current examinations and plugging activities. Additionally, Waterford 3 performed visual inspection of the S/G tubesheets for evidence of leaking tube plugs. As a result of the tubesheet scans, Waterford 3 did not identify any leaking tube plugs, thus closing the S/G primary side manways on April 12, 2002 to complete the RF#11 inspection.
Legend for Acronyms:
BWx               Batwing Support (x = number)
DSI               Distorted Support Indication DNG               Ding DNT               Dent MAI                Multiple Axial Indication MVI                Multiple Volumetric Indication NDD               No Distinguishable Discontinuity NQI               Non-Quantifiable Indication SAI               Single Axial Indication SCI               Single Circumferential Indication SVI                Single Volumetric Indication TSH               Tubesheet Hot Leg TWD               Through-Wall Depth WAR               Wear Reported with Rotating Probe RF 1SpecialReport doc S/G Eddy Current Inspection Page 4 of 21

Table 1 Results of In-Situ Screening for Indications in S/G #1 TUBE AND EDDY CURRENT INFORMATION TUBE INFORMATION                     PLUS POINT DATA                BOBBIN DATA REGION    -     --                    -     -        -_____                          -      RESULT OF SCREENING REGION   ROW   COL   LOCATION CALL VOLTS LENGTH DEPTH AVG DEPTH ORIENTATION    CALL   VOLTS Batmng    2      6  BW9 -031  MVI   101   0 61    24%      not calc Volum OD  NDD            No Teshng Required TSH      4    166  TSH +000  SAI   0 24  0 09     72%      55%      AxialOD  NOD      _     No Testing Required TSH      6    16   TSH -012  SAI   0 32  014     49%       33%      Axial OD NDD            No Testing Required Eggcrate  11    113  01H -0 23 SAI   019   010     42%       38%      Axial OD DSI     0 25   No Testing Required TSH     11    165  TSH -015  SAI   0 29  014      72%      48%      Axial OD NDD            NoTesting Required Eggcrate  12    114  01H -015  SAI   0 31  0 20    41%       33%      Axial OD DSI     0 43   No Testing Required TSH     12    166  TSH -010  SAI   0 38  014      20%       12%     Axial OD NDD       -    NoTesting Required TSH     19    109  TSH +0 07 SAI   153   013      37%      28%      Axial OD NDD            No Testing Required TSH     34    28   TSH -013  SAI   015   013     32%       30%      Axial OD NDD            NoTesting Requnred Above TSH  39    123   TSH 2 32 SAI   0 72  017      75%      66%      Axial OD NOI     011    No Testing Required TSH     41    131  TSH -010  SCI   063   015      50%      47%      Circ ID  NDD            NoTestingRequired TSH     59    65   TSH +0 27 SAI   015   0 25     60%      41%     Axial OD  NOD      _     No Testing Required TSH     61    65   TSH +0 31 SAI   0 20  0 14     57%      54%     Axial OD  NDD            No Testing Required TSH     64    84   TSH -0 24 SAI   128   0 17     63%      52%     Axial OD  NDD            No Testing Required TSH     66    72   TSH +0 15 SCI   0 42  0 20    34%       34%      Circ OD  NDD            No Testing Required TSH     79    85   TSH +0 40 SAl   015   015     70%       57%      Axial OD NOD      _     NoTesting Required Above TSH  79    87   TSH + 103 SAl   0 20  0 02     52%      49%      Axial O  NOD      _     No Testing Required TSH     87    77   TSH -008  SAI   015   020      63%      45%      AxialOD  NOD      _     NoTestingRequired RF1I SpecialReportdoc S/G Eddy Current Inspection Page 5 of 21

Table 2 Results of In-Situ Screening for Indications in SIG #2
_____________       TUBE AND EDDY CURRENT INFORMATION                   ____          ______
REGION     TUBE INFORMATION                         PtUS POINT DATA                     BOBBIN DATA RESULT OF SCREENIN ROW COL     LOCATION CALL VOLTS LENGTH DEPTH AVG DEPTH ORIENTATION             CALL VOLTS TSH       9    57   TSH -011   SAI   0 28     015      49%      44%        Axial OD    NDD           No Testing Required TSH        9   151  TSH -011   SAI   015      013      43%      37%        Axial OD    NDD      -    No Testing Required TSH       10   112  TSH +0 40  SAl   0 08     0 20     51%      45%        Axial OD    NDD           No Testing Required TSH       14   112  TSH +019   SAl   016      0 20     69%6     54%        Axial OD    NDD           No Testing Requlred TSH       16   110  TSH +025   SAl   012      010      51%      40%        Axial OD    NDD I         No Testing Required TSH       20   150  TSH -0 03  SAl   018      011      72%      51%        Axial OD    NDD           No Testing Required TSH       23   67   TSH +017   MAI   012      013      56%      52%      Mult Axial OD NOD     _     No Testing Required TSH       24   52   TSH +011   SAI   0 21     010      42%      39%        Axial OD    NDD           No Testing Required TSH       26   60    TSH -0 03 SAI   0 30     0 08     33%      33%        Axial OD    NDD           No Testing Required TSH      29   129  TSH +014   SCI   0 12     018      63%      56%        Circ 00     NOD       _   NoTesting Required TSH      36    34  TSH +004   SCI   0 16     018      95%      67%        Circ OD     NDD           No Testing Required TSH       36    52  TSH +014   SCI   023      020      14%      10%        Circ OD     NDD           NoTesting Required TSH       38   152  TSH -0 05  SAl   031      0 20     33%      28%        Axial OD    NDD           NoTesting Required TSH      39   121  TSH -015   SCI   0 83     0 20     81%      67%/       Axial OD    NDD           No Testing Required TSH      41   121  TSH +008 SCI     0.12     0 20     67%      31%        Circ OD     NDD           No Testing Required TSH      43   121  TSH +014   SVI   0 22  .10x.16     19%     not calc   Volum OD     NDD           No Testing Required TSH      45   147   TSH -0 05 SAI   018      013      52%      40%        Axial OD    NDD           No Testing Required TSH      47    73  TSH +024   SAl   0 08     0 24     66%      42%        Axial OD    NDD           No Testing Required TSH      49    61   TSH -0 09 SCI   3 05     019      45%      40%         Circ. ID   NDD           No Testing Required TSH      55   109  TSH +0 27  SAI   0 09     010      69%      64%        Axial OD    NDD           No Testing Requmred TSH      59   115  TSH +053   SAI   0 07     0 10     82%/o    81%        Axial OD     NDD          No Testing Required TSH      60   112  TSH +023   SAl   015      0 20     63%      57%        Axial OD    NDD           No Testing Required TSH      62    94  TSH +0 31  SAl   0 09     0 23     79%      56%        Axial OD     NDD          No Testing Required TSH      70    94   TSH -014  SCI   0 29     021      45%      39&deg;/        CimcID      NDD          No Testing Required TSH      74   150  TSH +007   SVI   1 23  .22 x 26     42%    notcalc. Axial OD     NDD          No Testing Required TSH      75    77  TSH +044   SAl   0 40     008       54%      46%       Axial OD     NDD          No Testing Required TSH      79    91  TSH +064   SAl   016      0 20      49%      37%       Axial OD     NDD          No Testing Required TSH      84    94   TSH 4 09  MAI   018      0 20      57%      46%     Mutt Axial OD  NDD          No Testing Required TSH      104  100  TSH +050   SAI   0 09     0 10      61%      61%       Axial OD     NDD          No Testing Required TSH      106   90  TSH +0.22  SAI   0 09     0 20      65%      43%       Axial OD     NDD          No Testing Required TSH      110   96  TSH +0 72  SAi   0 08     0 20      39%      36%       Axial OD     NOD     _    No Testing Required TSH      128   60   TSH +017  SCI   0 97     016       34%      30%       Cirr- OD     NDD          NoTesting Required TSH      33     5   TSH +519  SVI    0 26  .18 x.22    17%b not calc. Volum OD      NQI    0 36  No Testing Required TSH      32     4   TSH +593  SVI    0 40  .24x.22     19%    not calc. Volum OD     NQI    0 30   No Testing Required RF1 lSpecialReportdoc S/G Eddy Current Inspection Page 6 of 21

Table 3 Percent of Wall-Thickness Penetrations for SIG #1 Row        Column  Indication  %TW    Support      Location 1              7    PCT         4     07C           -0.1 9            175    PCT        11     07H           0.75 12            138    PCT        14     02H           0.54 19             15    PCT         9    BW5            0.75 19             15    PCT        10    BW5           -0.84 19             27    PCT        11    BW5            0.81 19             63    PCT         9    BW5            0.76 19            167    PCT        14    BW5            0.76 19            171    PCT         9    BW5           -0.93 20            146    PCT        18     04H           0.67 21             39    PCT        11    BW5            0.83 22            112    PCT         7    BW5            0.79 22            128    PCT         6    BW5            0.85 23             39    PCT         9    BW5            0.71 23             57    PCT         8    BW5            0.65 24             56    PCT         6    BW5           -0.68 24             60    PCT         8    BW5           -0.76 24             68    PCT        10    BW9           -1.52 24            108    PCT        25    BW5            0.73 25             67    PCT         6    BW5           -1.11 26             62    PCT         8    BW9           -1.66 28             58    PCT         6    BW5           -0.74 29             59    PCT         7    BW5           -0.79 29             69    PCT         9    BW5           -0.78 30             60    PCT        13    BW5            0.68 31             67    PCT        10    BW5            0.87 32             22    PCT         8    BW5           -0.75 32             60    PCT         8    BW5            0.84 36             16    PCT        11    BW5            0.93 36             18    PCT        14    BW5              -1 36             18    PCT        11    BW5            0.86 36            118    PCT        11    BW5               0 37             41    PCT        11    BW5           -0.99 37             45    PCT        18     BW5           0.87 38             14    PCT        10     BW5           0.72 38             60    PCT         7     BW5           1.01 39             41    PCT        29     BW5          -0.96 39            111    PCT        15     BW5           0.94 40            168    PCT        16     BW5           0.95 42             20    PCT         9     BW5          -0.78 42             40    PCT         9     BW5           0.99 42            108    PCT        12     BW5           0.65 42            108    PCT        29     BW5          -0.57 42            112    PCT        11     BW5           0.97 42            112    PCT        11     BW5          -0.91 43             53    PCT        13     BW5             0.8 43             65    PCT        11     BW5            -0.9 44             46    PCT        20     BW5           0.98 44             46    PCT        26     BW5          -0.87 RF 1 SpecialReportdoc S/G Eddy Current Inspection Page 7of21

Table 3 Percent     of Wall-Thickness     Penetrations for S/G #1 Row       Column      Indication  %TW      Support        Location 44          66          PCT        14       BW5             0.72 44         156          PCT        17       BW5             0.62 45          41          PCT        38       BW5            -0.96 45          49          PCT        12       BW5             0.88 45         105          PCT        17       BW5             0.83 45         105          PCT        13       BW5             0.08 45         105          PCT        20       BW5               -1 45         115          PCT        10       BW1              0.9 46           52         PCT        24       BW5             0.67 46           64         PCT        21       BW5            -0.87 46           70         PCT        19       BW5             0.73 48           66         PCT        14       BW5            -0.77 48           72         PCT        23       BW5            -0.71 48           72         PCT        21       BW5            -0.16 48           72         PCT        20       BW5             0.45 48           74         PCT         8       BW5            -0.03 48           74         PCT        10       BW5            -0.79 48           74         PCT        10       BW5             0.68 48          144         PCT        31       BW5            -0.88 48          144         PCT        17       BW5             0.71 49           79         PCT        21       BW9              1.51 49           99         PCT        15       BW1              1.74 49          115         PCT        15       BW5            -0.96 50           28         PCT        11       BW5             0.86 50           40         PCT         8       BW5            -0.85 50           56         PCT        15       BW5             0.76 50           56         PCT         9       BW5            -0.84 50           66         PCT        21       BW5              -0.8 50          120         PCT        10       BW5               0.9 50          134         PCT        13       BW5             -0.91 51           39         PCT        15       BW6              0.77 51           57         PCT         7        BW4              0.8 51           67         PCT         9        BW5            -0.78 51           67         PCT        22        BW4             0.84 51           77         PCT        33        BW4             0.92 53           83         PCT        25        BW9            -1.33 53           83         PCT        17        BW9             1.59 53          115         PCT        13        BW5             0.67 54           86         PCT        19        BW9             -1.7 54          92         PCT        13        08H             0.37 54         120         PCT         11       BW5             0.78 54         120         PCT         11       BW5            -0.81 55          13         PCT         7        BW5             0.67 55          21         PCT         7        BW6              0.7 55         137         PCT         13       BW5              0.8 55         137         PCT         15       BW4              0.7 56          68         PCT         7        BW4            -0.65 56          114        PCT         11       BW5              0.7 56          114         PCT        11       BW5            -0.76 RF1 I SpecialReportdoc S/G Eddy Current Inspecton Page 8 of 21

Table 3 Percent of Wall-Thickness Penetrations for S/G #1 Row       Column  Indication  % TW   Support      Location 57            87    PCT        18    BW9            1.73 57          139     PCT        12    BW4           0.64 57          147     PCT        19    BW5           0.41 58            86    PCT        25    BW9            1.66 58          108     PCT        14    BW5           -0.75 59            13    PCT         7    BW6           0.72 59            37    PCT        17    BW6           -0.84 59            49    PCT        11    BW5           0.73 60            86    PCT        28    BW9            1.61 61            15    PCT        10    BW6            1.01 61            15    PCT         9    BW5            0.94 61            15    PCT        11    BW5           -0.82 61            15    PCT        21    BW6           -0.85 61            35    PCT        12    BW6            0.85 61            35    PCT        12    BW5            0.8 61            63    PCT        10    BW5            0.83 61            79    PCT        12    BW5            0.82 61           111    PCT         9    BW4             0.7 61           115    PCT        14    BW4            0.69 61           119    PCT        10    BW4             0.7 61           127    PCT        12    BW4            0.79 61           139    PCT        12    BW4            0.74 62            10    PCT        16    BW5           -0.72 62            18    PCT        13    BW4            0.91 62            20    PCT        12    BW4           -0.83 62            20    PCT        17    BW4            0.83 62            84    PCT         5    BW9           -1.91 62            84    PCT        12    BW9            1.86 62            86    PCT        19    BW9           -1.54 63            63    PCT        10    BW6            1.16 63            63    PCT        10    BW5            1.32 63           137    PCT        14    BW5           -0.97 64            16    PCT        16    BW5            0.93 64            16    PCT        21    BW5           -0.75 64            16    PCT        14    BW4           -0.72 64            88    PCT        13    BW9           -1.63 66            18    PCT        18    BW5           -0.66 67            11    PCT        19     BW5           0.85 67            27    PCT         8    BW5            0.78 67            47    PCT         6     BW6          -0.54 68            58    PCT        17     BW5          -0.78 68            78    PCT        22     BW6           0.99 68           130    PCT        16     BW4          -0.91 70            24    PCT        20     BW5          -0.74 70            24    PCT        12     BW5           0.93 70            24    PCT        19     BW6           0.87 71            27    PCT         8     BW4          -0.73 72           120    PCT        26     BW4           0.94 72           126    PCT        22     BW4          -0.73 RF1 1SpecialReportdoc S/G Eddy Current Inspection Page 9 of 21

Table 3 Percent of Wall-Thickness Penetrations for S/G #1 Row        Column  Indication   %TW   Support      Location 72           126    PCT        10    BW5            0.31 72           126    PCT        16    BW6            0.99 72           126    PCT        28    BW4            0.87 72           126    PCT        13    BW5           -0.99 73           19     PCT         9    BW4              1 73           85     PCT         9    BW9            1.56 73           85     PCT         9    BW9            1.77 74            14    PCT        20    BW4            0.83 74            14    PCT        10    BW1           -1.57 74           124    PCT         9    BW5            0.99 74           124    PCT        12    BW6           -0.99 74           124    PCT        15    BW5           -0.99 74           144    PCT        19    BW5            0.84 74           144    PCT        14    BW1           -1.29 74           144    PCT        26    BW6            0.89 76           38     PCT        12    BW5           -0.84 76           58     PCT        15    BW6           -0.62 76           96     PCT        14    BW5           -0.98 76           128    PCT        20    BW6           -0.99 76           128    PCT        22    BW5           -0.65 76           128    PCT        32    BW6            0.99 76           128    PCT        23    BW4            0.76 76           128    PCT        20    BW5             0.9 76           140    PCT        33    BW6            0.98 77           27     PCT        10    BW5           -0.74 77           27     PCT        11    BW6            0.93 77           27     PCT        16    BW6           -0.87 77            27    PCT        11    BW5            0.87 77            27    PCT         9    BW4           -0.82 77            35    PCT         6    BW5           -0.98 78            22    PCT        17    BW6            0.99 78            22    PCT        17    BW5            0.83 78            80    PCT        11    BW5           -0.61 78            80    PCT         8    BW6            1.02 78            98    PCT        12    BW6            0.73 78           100    PCT        16    BW6            0.96 78           100    PCT        11    BW5           -0.74 78           108    PCT        21    BW5             -0.7 78           108    PCT        17    BW6           -1.01 78           108    PCT        24    BW4           -0.58 78           142    PCT        20    BW4           -0.73 78           142    PCT        24    BW6            -0.81 78           142    PCT         18   BW5            0.14 78           144    PCT        32    BW4            0.78 78           144    PCT        33    BW6             0.98 78           144    PCT         19   BW6            -0.78 78           144    PCT        21    BW5             0.34 78           144    PCT        20    BW5            -0.75 78           144    PCT         34   BW4            -0.92 RF1 SpecialReport doc S/G Eddy Current Inspection Page IO of 21

Table 3 Percent of Wall-Thickness Penetrations for S/G #1 Row        Column  Indication  %TW    Support      Location 80           38     PCT        14    BW4            0.92 80           38     PCT       26     BW6           -0.83 80           38     PCT        13    BW5           -0.76 80           86     PCT        10    BW9           -1.65 81           21     PCT        12     08C           0.78 81           61     PCT       22     BW4            0.75 81           65     PCT        16    BW4           -0.68 81           85     PCT         7    BW9            1.75 81          147     PCT        12    BW6            0.89 81          149     PCT        14     08C           0.79 81          159     PCT         7    BW9              -2 82           18     PCT        17    BW4            0.86 82           20     PCT        16    BW6           -0.85 82           38     PCT        20    BW5           -0.78 82           38     PCT        35    BW6           -0.98 82           54     PCT        14    BW6           -0.88 82           54     PCT        27    BW5            0.85 82           54     PCT        17    BW5           -0.96 82           62     PCT        11    BW4             -0.6 82           82     PCT        25    BW5            0.83 82           84     PCT         8    BW6           -0.82 82           84     PCT         8    BW6            0.99 82           86     PCT        19    BW9               0 82           96     PCT        10    BW5           -0.67 82          126     PCT        17    BW6            0.73 82          126     PCT        16    BW6            0.89 82          138     PCT        32    BW6            0.75 82          138     PCT        14    BW4            -0.84 82          138     PCT        16    BW4            0.98 82          138     PCT        21    BW5            0.67 82          140     PCT        21    BW4             0.89 82          140     PCT        19     BW6            0.98 82          140     PCT        31     BW6           -0.92 82          142     PCT        25     BW6           -0.85 82          144     PCT        13     BW5           -0.75 83            29    PCT         7     BW5            -0.2 83            81    PCT         9     BW3            0.78 83            97    PCT        12     BW6            0.96 83            97    PCT        15     BW6           -0.96 83            97    PCT        18     BW5           -0.83 83           149    PCT        16     BW7            0.64 85            59    PCT        16     BW4              0 87            27    PCT        12     BW7           -0.65 87            41    PCT        11     BW9              2 88            42    PCT        15     BW3           -0.62 88            48    PCT        18     BW3            -0.8 90            96    PCT         8     BW3           -0.76 91           115    PCT        14     BW91           0.47 92            22    PCT        14     BW5            0.85 RF 1SpecialReport doc S/G Eddy Current Inspection Page 11 of 21

Table 3 Percent of Wall-Thickness Penetrations for SIG #1 Row       Column  Indication  %TW    Support      Location 95          145     PCT        11     09C          0.72 96           58     PCT        17    BW3           0.27 96          58     PCT        13    BW3           0.92 97          75     PCT        18    BW3           -0.43 97          75     PCT        12    BW7           -0.32 98          76     PCT        19    BW3           -0.85 99         117     PCT        17    BW4           -0.85 100          32     PCT        15     09H          -0.87 100          70     PCT        13    BW6           -0.86 100          70     PCT        16    BW3           -0.92 100         142     PCT        16     09C          -0.89 100         146     PCT        16    BW4           -0.73 100         146     PCT        15    BW6            0.87 100         146     PCT        13    BW6            -0.7 101          75     PCT        14    BW3            0.99 102          42     PCT        22    BW3           -0.78 102          76     PCT        18    BW3            0.99 104         144     PCT        18     BW3          -0.89 104         146     PCT        17     BW3          -0.83 105          31     PCT         8     BW7          -0.72 105          35     PCT        25     BW5           0.99 105          43     PCT         7     BW3           0.86 105          45     PCT         9     BW7           0.94 105          53     PCT        22     BW3          -1.07 105          73     PCT        12     BW5           0.97 105          73     PCT        14     BW4             1 105          77     PCT        12     BW7           0.89 106          98     PCT         7     BW7           0.94 107          31     PCT        11     BW7          -0.78 107          81     PCT         8     BW3           0.46 108          74     PCT        17     BW3           -0.7 109          39     PCT         9     BW5          -0.75 110          40     PCT        15     BW7           -0.8 110          42     PCT        19     BW3           0.97 113          39     PCT        13     BW7           0.97 114          34     PCT        13     BW9           1.86 114          40     PCT        12     BW6          -0.74 114          68     PCT         8     BW1          -1.59 116          42     PCT        12     BW6          -0.81 116          44     PCT        14     BW4           0.94 116          74     PCT        16     BW2           0.99 116          74     PCT        19     BW3           0.99 117          53     PCT        16     BW4          -0.57 117          71     PCT        20     BW2           0.71 118          76     PCT        15     BW4           0.59 119          65     PCT        10     BW2           0.86 120          42     PCT        19     10H           0.99 120          42     PCT        17     BW3           0.78 120          42     PCT        12     BW3          -0.93 RFI1SpecialReport doc S/G Eddy Current Inspecton Page 12 of 21

Table 3 Percent of Wall-Thickness Penetrations for S/G #1 Row        Column  Indication  %TW    Support      Location 120           58     PCT        10     10H          -0.99 121           71     PCT        11    BW6            0.97 123           77     PCT        9     BW6           -0.82 123          127     PCT        9     BW2            0.82 124           58     PCT        15    BW2           -0.91 125           83     PCT        13    BW5           -0.79 125         105     PCT        10    BW9            1.88 126          72     PCT        15    BW3            0.97 126          90     PCT        8     BW2            1.06 127         127     PCT        8     BW3            0.94 127         129     PCT        7     BW2           -0.91 127         129     PCT        9      BW2          -0.85 129          59     PCT        16     BW3          -0.62 130          82     PCT        17     BW2           1.12 130          82     PCT        16     BW2            -0.7 130          94     PCT         6     BW2          -0.82 131          51     PCT         7     08C           0.78 133          77     PCT        18     BW3          -0.67 133          77     PCT        12     BW2          -0.23 133          77     PCT        15     BW4          -0.79 133          121    PCT         9     BW3          -0.58 133          121    PCT        17     BW2          -0.85 133          121    PCT        26     BW2           0.82 135          67     PCT        14     BW3          -1.17 135          119    PCT        18     BW3           0.83 135          119    PCT        20     BW4          -0.92 135          119    PCT        17     BW4           0.98 135          119    PCT         9     BW7           -0.86 135          119    PCT        15     BW2           0.72 135          119    PCT        25     BW2           -0.95 136          78     PCT        13     BW2           -0.97 137          65     PCT        14     BW4            0.96 137          119    PCT         8     BW2           -0.49 138           60    PCT        20     09H             -1 138           88    PCT        12     BW3           -0.49 138           88    PCT        12     BW3            0.81 139          111    PCT        17     BW2           -0.86 141           63    PCT        17     BW1           -1.69 141           85    PCT       '25     BW3           -0.96 141          113    PCT        11     BW9           -1.95 142           94    PCT        10     BW2             0.9 144           72    PCT        11     BW9            1.96 145           73    PCT        27     BW1            1.22 145           95    PCT         8     BW9             -2 145          101    PCT        11     BW9           -1.61 145          101    PCT         5     BW1            1.41 145          103    PCT         3     BW1           -0.97 145          103    PCT        11     BW7            0.99 145          103    PCT        10     BW9            1.89 RF11 SpecialReport doc S/G Eddy Current Inspection Page 13 of 21

Table 3 Percent of Wall-Thickness Penetrations for SIG #1 Row        Column  Indication  %TW    Support      Location 145          103     PCT       23     BW8            0.91 145          103     PCT        8     BW2            0.99 145          103     PCT        13    BW2           -0.17 145          103     PCT        17    BW1            1.82 145          103     PCT        12    BW9           -1.88 146           76     PCT        24    BW1             1.6 146           78     PCT        17    BW4            0.99 146           80     PCT        29    BW1           -1.69 146           88     PCT        24    BW1            1.51 146           88     PCT        17    BW9            1.59 146          100     PCT        11    BW9            1.48 147           85     PCT        13    09H              0 147           89     PCT        12    BW1           -2.13 147           91     PCT        10    BW9           -1.88 RFl 1SpecialReport.doc SIG Eddy Current Inspection Page 14 of 21

Table 4 Percent of Wall-Thickness Penetrations for S/G #2 Row        Column Indication   %TW  Support       Location 3          113     PCT        15    06C           0.18 7          113     PCT        14    BW9          -0.94 10         24      PCT        16    05H           0.84 11          3      PCT        15    BW9             -1 11         163     PCT        17    BW9           0.84 11         175     PCT        18    BW1           1.59 19          3      PCT        29    BW5             0.8 19         25      PCT        13    BW9          -0.52 19         25      PCT        12    BW5           0.78 19         25      PCT        22    BW5          -0.86 19         65      PCT        25    BW5          -0.78 19         111     PCT        12    BW5             0.9 19         113     PCT        10    BW5          -0.84 19         113     PCT         9-   BW5           0.96 19         117     PCT        21    BW5          -0.74 20          68     PCT        18    BW5          -0.74 20          68     PCT         8    BW5           0.87 20          68     PCT        36    BW1            -1.5 21         109     PCT        14    BW5           0.73 22          44     PCT         8    BW5           -0.89 22         146     PCT        19    BW9           0.65 23          15     PCT         8    BW5           -0.82 24          56     PCT         8    BW5           -0.83 24         110     PCT         8    BW5           -0.83 27          33     PCT        14    03H             0.8 27         137     PCT         9    BW1            -0.8 29          49     PCT        20    BW9           -0.56 30          10     PCT        19    BW9           0.73 30          20     PCT        17    BW9            0.68 32         112     PCT        14    BW5            0.63 33          15     PCT        12    BW5           -0.89 34           8     PCT        13    BW5           -0.95 34           8     PCT         9    BW5            0.76 34         124     PCT         8    BW9            0.24 34         144     PCT        11    BW5           -0.84 34         170     PCT        18    BW5            0.69 35          17     PCT         8    BW5           -0.89 35          37     PCT         9    BW5           -0.93 35          53     PCT         9    BW5            0.71 35          53     PCT         8    BW5           -0.91 36           4     PCT        15    BW5           -0.89 36          54     PCT        13    BW5           -0.89 37          65     PCT        16    BW5           -0.71 37         125     PCT        10    BW5           -0.96 37         141     PCT        11    BW5            -0.7 37         155     PCT         19   BW5           -0.96 37         157     PCT         10   BW5            0.85 37         157     PCT         13   BW5           -0.91 38          22     PCT         19   BW9           -1.09 RF11 SpecialReport doc S/G Eddy Current Inspecbon Page 15 of 21

Table 4 Percent of Wall-Thickness Penetrations for S/G #2 Row       Column  Indication  %TW   Support      Location 38          158     PCT         9   BW5           0.95 38          164     PCT        14   BW9             0.6 39          111     PCT        11   BW9          -0.78 40           14     PCT        11   BW9          -1.42 40          108     PCT        25   BW5            -0.8 40          108     PCT        20   BW5           0.86 40          154     PCT        18   BW5           0.92 41            9     PCT        10   BW5           -0.37 41           39     PCT        12   BW5           0.86 41          127     PCT        14   BW5           0.97 41          139     PCT        19   BW5           0.84 41          149     PCT        25   BW5           0.83 41          167     PCT        16   BW5              1 42          108     PCT        13   BW5            0.75 42          108     PCT        10   BW5           -0.74 43           37     PCT        15   BW5            -0.9 43           37     PCT        17   BW5            0.84 43           69     PCT        30   BW5            0.96 43           69     PCT        16   BW5           -0.96 43          149     PCT        16   BW5            0.82 44           16     PCT        30   BW5           -0.96 44           16     PCT        14   BW5            0.81 44           40     PCT        13    BW5          -1.07 44           40     PCT        10    BW5           0.79 44           48     PCT        13    BW5           0.83 44           50     PCT        15    BW5          -0.92 44           52     PCT        17    BW5          -0.92 44           52     PCT        11    BW5           0.89 44           154    PCT         9    BW5          -0.98 45           137    PCT         13   BW9          -0.32 45           145    PCT        27    BW5          -0.93 45           145    PCT        23    BW5           0.61 45           167    PCT        21    BW5          -0.79 46            6     PCT         16   BW5          -0.87 46            32    PCT         17   BW5          -0.98 46            32    PCT         9    BW5           0.95 46            34    PCT         14   BW5           0.87 46            34    PCT         14   BW5            -0.9 46            40    PCT         10   BW5           0.84 46            52    PCT         12   BW5           -0.71 46         - 52     PCT          6   BW5           0.84 46            64    PCT         29   BW5            0.98 46            68     PCT        19   BW5           -0.77 46           68     PCT        28   BW5            0.89 46           68     PCT        18   BW5           -0.68 46           68     PCT        27   BW5            0.78 47           51     PCT        14   BW5            0.81 47          143     PCT        27   BW5            0.71 47          147     PCT        19   BW5            0.68 RFl1SpecialReportdoc SIG Eddy Current Inspecton Page 16 of 21

Table 4 Percent of Wall-Thickness Penetrations for S/G #2 Row        Column Indication  %TW    Support      Location 47          147     PCT       13     BW5          -0.59 48           18     PCT       11     BW5           0.83 48           18     PCT       31     BW5          -0.68 48          30      PCT       10     BW5          -0.78 48          46      PCT       11     BW5          -0.84 48          52      PCT        9     BW5          -0.74 48          52      PCT        5     BW5           0.84 48          70      PCT       13     BW5             1 48          70      PCT       19     BW5          -0.98 49          149     PCT       23     BW5           0.76 50          142     PCT       10     BW5          -0.96 52           34     PCT       10     BW6           -0.8 52          164     PCT       16     BW9           -0.9 54          84      PCT       22     BW1          -2.07 54           88     PCT       35     BW9           1.72 56          88     PCT       32     BW9          -1.51 59          35     PCT       25     BW6           0.61 60          42     PCT       12     BW4           0.66 60          58     PCT        8     BW6           0.66 62         136     PCT       16     BW9           0.54 64         154     PCT       11     BW6          -0.74 66          50     PCT       23     BW9          -1.49 66          96     PCT       14     BW1           2.01 66         156     PCT       17      08C         -0.22 68         144     PCT       15     BW4          -0.65 69          25     PCT       14     BW6           0.88 69          35     PCT        12    BW5           0.96 69          85     PCT       27     BW9           -1.61 70          56     PCT        9     BW5            0.88 70         138     PCT        9     BW5           0.31 70         160     PCT       22      08C          0.77 71         159     PCT        12    BW4            -0.6 72         104     PCT        13    BW5           0.85 73          53     PCT       28     BW6            -0.7 73          53     PCT        8      BW5          -0.82 73          53     PCT        18    BW6            0.87 73          53     PCT        15    BW5            0.98 73          57     PCT        25    BW6            0.92 74          20     PCT        17    BW9            1.56 74          48     PCT        19     BW6           0.97 74          48     PCT        27 -   BW4           1.16 74          48     PCT        37     BW5           1.08 74         118     PCT        31     BW5          -0.83 74         118     PCT        16     BW6           0.88 74         118     PCT        30     BW4          -0.81 76          24     PCT        20     BW5          -0.83 76          24     PCT        16     BW4          -0.88 76          24     PCT        20     BW6           1.07 76          42     PCT        15     BW6           1.13 RF11 SpecialReport doc SIG Eddy Current Inspecton Page 17 of 21

Table 4 Percent of Wall-Thickness Penetrations for S/G #2 Row         Column Indication  %TW   Support      Location 76           156     PCT        12   BW4           0.86 77           37      PCT         9   BW4          -0.95 77           37      PCT        12   BW4           0.95 77           37      PCT        14   BW5           0.78 77           37      PCT         9   BW5          -0.92 77           47      PCT        11   BW4            -1.1 77           49      PCT        12   BW5           0.84 77           51      PCT        26   BW4          -0.88 77           57      PCT        14   BW5          -0.88 77           61      PCT        22   BW4           0.91 77           61      PCT        18   BW4          -0.97 77            71     PCT        20   BW5           0.67 77            71     PCT        20   BW4           0.78 77          107     PCT        13   BW4          -0.53 77          117     PCT        19   BW6            -0.7 78           20     PCT        15   BW4          -0.77 78           28     PCT        12   BW9              2 78           28     PCT        19   BW6            -0.8 79           25     PCT         7   BW6           -0.96 79           25     PCT         8   BW6           0.94 79           49     PCT        12   BW6           -0.76 79          139     PCT        16    08C          -0.14 80           26     PCT        19    08C          -0.99 80           28     PCT        22   BW6           0.99 80           48     PCT        31   BW5           -0.94 80           52     PCT        14   BW4            0.73 80          150     PCT        14    08H           0.95 81           21     PCT        13   BW6            -0.8 81           27     PCT        14   BW6              1 81           27     PCT         9   BW4           -0.74 81           33     PCT        12   BW9            1.99 81           33     PCT        17   BW5            1.33 81           49     PCT        10   BW6            1.07 81           49     PCT        17    BW6          -0.58 81           49     PCT        21    BW5           0.96 81           55     PCT        11    BW5           0.92 81           57     PCT        22    BW4          -0.75 81           61     PCT        10    BW4           0.97 81           87     PCT        15    BW6           0.94 81           91     PCT         9    BW5           0.97 81           91     PCT        11    BW4            0.9 81           97     PCT        19    BW4           0.92 81           97     PCT        18    BW6          -0.65 81           97     PCT        33    BW5           0.97 82           22     PCT        15    BW4           0.96 82           26     PCT         13   BW5          -0.94 82           26     PCT         17   BW6            -0.8 82           26     PCT         11   BW5           0.99 82           26     PCT        20    BW6           0.96 RF1 1SpecialReport.doc S/G Eddy Current Inspection Page 18 of 21

Table 4 Percent of Wall-Thickness Penetrations for SIG #2 Row        Column Indication  %TW   Support       Location 82          28      PCT       29     BW6            0.97 82          28      PCT       16     BW5           -0.96 82          28      PCT       15     BW4           -0.69 82          54      PCT       19     BW4            0.88 82          64      PCT       17     BW6           -0.88 82          64      PCT       18     BW4            0.72 82          128     PCT       22     BW6            0.68 82          128     PCT       29     BW5            0.72 82          160     PCT        9     BW9           -2.05 83          33      PCT        8     BW5             0.8 83          35      PCT       13     BW7           -0.98 83          35      PCT       12     BW7            0.97 83          35      PCT       18     BW5            0.93 83          41      PCT       16     BW3            0.73 83          51      PCT        9     BW7            0.83 83          57      PCT       19     BW3             -0.8 83          107     PCT       14     BW3           -0.84 83          153     PCT       11     BW1               0 83          159     PCT       19     BW9           -1.75 84          88      PCT       10     BW4             -0.7 85          87      PCT        8     BW5              0.8 85          143     PCT       13     BW3           -0.71 86          158     PCT       12     BW5           -0.57 90          20      PCT       29     09H           -0.96 91          107     PCT       14     BW3            0.83 91          117     PCT       15     BW3           -0.76 91         147     PCT       12     09C           -0.97 92         136     PCT       15     BW4           -0.85 94          24     PCT       16     BW9            1.99 94          24     PCT       23     BW9            0.09 94          30     PCT       27     09C            0.03 94          40     PCT       16     BW6            0.93 94          40     PCT       12     BW3           -0.85 94          42     PCT       13     BW7            -0.72 94          56     PCT       13     BW4            -0.92 94          56     PCT       11     BW3            -0.76 96          42     PCT       19     BW3            -0.77 96          42     PCT        12    BW3             0.83 96         144     PCT        15    08C            -1.01 97          85     PCT        12    BW3             0.83 97          85     PCT        13    BW4             0.86 100          36     PCT        15    BW5            -0.77 101          85     PCT        8     BW4             0.91 101          95     PCT        19    BW3             0.83 101         149     PCT       26     09C             0.75 101         149     PCT       22     09C            -1.09 102          78     PCT        14    BW3            -0.55 103         147     PCT        10    09C            -1.06 104         122     PCT        14    BW3            -0.88 RF11 SpecialReport doc S/G Eddy Current Inspecbon Page 19 of 21

Table 4 Percent of Wall-Thickness Penetrations for S/G #2 Row         Column Indication  %TW  Support       Location 105           59     PCT       11    BW5           0.89 105           85     PCT       14    BW6          -0.69 105          141     PCT       13    BW4           0.96 105          143     PCT       17    BW3            1.04 105          143     PCT       19    09H          -0.84 105          143     PCT       12    BW6          -0.71 106           94     PCT       11    BW9           0.55 106          116     PCT       16    BW7           -1.04 107           51     PCT        8    BW7           -0.63 107           55     PCT       22    BW5           0.94 107           55     PCT       19    BW6           -0.94 107           55     PCT       17    BW5           0.28 108           74     PCT       15    BW3            -0.7 109          141     PCT       18    BW5            0.91 110           48     PCT       10    BW3             1.1 110           78     PCT       14    BW6            -0.9 113          109     PCT       28    BW3            0.79 114           42     PCT       13    BW7            0.72 114           54     PCT       21    BW7            0.99 114          106     PCT       15    BW4           -0.09 114          112     PCT       13    BW3            0.86 115          109     PCT       12    BW8            0.77 117           39     PCT       17    BW5           -0.83 117           89     PCT       12    BW4           -0.73 119           45     PCT       20    BW4           -0.83 119           67     PCT       17    09C            0.08 119          139     PCT       11    BW1            -0.4 121          111     PCT       16    BW7            0.73 123          115     PCT       12    08C           -0.88 125           83     PCT       10    BW4            0.34 125          133     PCT       12    BW4           -0.77 127          125     PCT       13    06C           -0.91 130           50     PCT        9    BW5           -0.71 133           61     PCT       20    BW5            0.74 133           61     PCT        8    BW3            0.58 133           87     PCT        9    BW6            0.94 133          117     PCT       17    BW3            0.88 134           52     PCT       13    BW1            1.15 135          113     PCT       20    BW8            0.03 137           61     PCT       11    09C           -0.87 137           65     PCT       10    BW5              -1 137          111     PCT       16    BW8           -0.53 138           64     PCT        11   BW7            0.82 141           69     PCT        12   BW7            0.52 141           75     PCT       20    BW1            1.58 142           68     PCT       22    10C           -0.25 142          100     PCT        10   BW2           -0.81 143           67     PCT       20    BW8            0.61 143          103     PCT        13   BW9             1.63 RFI1 SpecialReport doc S/G Eddy Current Inspection Page 20 of 21

-i Table 4 Percent of Wall-Thickness Penetrations for S/G #2 Row         Column Indication   %TW  Support      Location 144          86      PCT        22   BW1           1.53 144          88      PCT         6   BW9           1.72 144          100     PCT         7   BW9          -1.85 144          106     PCT         8   BW1          -1.85 144          106     PCT        40   BW1           1.95 144          106     PCT        14   BW1          -1.61 145          77      PCT        23   BW8          -0.97 145          77      PCT        19   BW1           1.47 145          83      PCT        22   BW1           1.62 145          85      PCT        13   BW7           0.91 145          85      PCT        23   BW8          -0.91 145          85      PCT         9   BW1          -1.92 145          85      PCT        24   BW8           0.92 145          85      PCT        19   BW9          -1.54 145          87      PCT         9   BW9            -1.8 145          89      PCT        18    08C         -1.03 145          89      PCT        20   BW7          -0.97 145          89      PCT        19   BW4          -0.92 145          89      PCT        22   BW8           0.92 145           89     PCT        33   BW8          -0.75 145           95     PCT        18   BW8           0.86 145           95     PCT        30   BW8          -0.86 145          101     PCT        21   BW3           0.94 145          103     PCT        29   BW9            -1.7 146           78     PCT        13   BW9            -1.5 146           78     PCT        27   BW9           1.58 146           80     PCT        21   BW9            1.42 146           80     PCT        21   BW9            1.42 146           82     PCT        27   BW1            1.51 146           84     PCT        18   BW9            1.62 146           88     PCT        30   BW1            1.59 146           88     PCT        30   BW9            1.53 146           90     PCT         15  BW9            1.53 147           81     PCT        22    09H          0.75 147           85     PCT         14  BW1           -1.55 147           85     PCT        21   BW6           0.92 147           85     PCT        27   BW7           0.78 147           87     PCT        34   BW8            0.03 147           87     PCT        27   BW2           -0.73 147           87     PCT        22   BW7           -0.87 147           87     PCT        26   BW8           -0.87 147           87     PCT         19  BW7            0.53 147           91     PCT        30   BW8           -0.95 147           91     PCT         24  BW8            0.86 RF11 SpecialReport doc S/G Eddy Current Inspection Page 21 of 21}}