View source for W3F1-2011-0072, Day Steam Generator Tube Inspection Report for the 17th Refueling Outage

{{Adams
| number = ML113080090
| issue date = 11/03/2011
| title = Day Steam Generator Tube Inspection Report for the 17th Refueling Outage
| author name = Steelman W
| author affiliation = Entergy Nuclear South, Entergy Operations, Inc
| addressee name = 
| addressee affiliation = NRC/NRR, NRC/Document Control Desk
| docket = 05000382
| license number = NPF-038
| contact person = 
| case reference number = W3F1-2011-0072
| document type = Inservice/Preservice Inspection and Test Report, Letter type:W
| page count = 51
}}

=Text=
{{#Wiki_filter:Entergy Nuclear South Entergy Operations, Inc.
17265 River Road Killona, LA 70057-3093 Tel 504 739 6685 Fax 504 739 6698 wsteelm@entergy.com William J. Steelman Licensing Manager Waterford 3 W3F1-2011-0072 November 3, 2011 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

==SUBJECT:==
180 Day Steam Generator Tube Inspection Report for the 17TH Refueling Outage Waterford Steam Electric Station, Unit 3 Docket No. 50-382 License No. NPF-38

==Dear Sir or Madam:==

Attached is the 180 Day RF17 Steam Generator Tube Inspection Report for Entergy Operations, Inc (EOI) Waterford Steam Electric Station Unit 3. This report is being submitted in accordance with Technical Specification 6.9.1.5 and provides the complete results of the Refueling Outage 17 Steam Generator Tube Inspection.
There are no new commitments contained in this letter.
Please contact William J. Steelman at (504) 739-6685 if you have questions regarding this information.
Sincerely, WJS/RJP/ssf Attachments
: 1. 180-Day Steam Generator Tube Inspection Report for the 17TH Refueling Outage
: 2. Additional Tables Relative to the 17TH Refueling Outage Steam Generator Tube Inspection Report

W3F1-2011-0072 Page 2 cc:    Mr. Elmo E. Collins, Jr.                RidsRgn4MailCenter@nrc.gov Regional Administrator U. S. Nuclear Regulatory Commission Region IV 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125 NRC Senior Resident Inspector           Marlone.Davis@nrc.gov Waterford Steam Electric Station Unit 3 Dean.Overland@nrc.gov P.O. Box 822 Killona, LA 70066-0751 U. S. Nuclear Regulatory Commission     Kaly.Kalyanam@nrc.gov Attn: Mr. N. Kalyanam Mail Stop O-07D1 Washington, DC 20555-0001 Louisiana Department of Environmental Quality Office of Environmental Compliance Surveillance Division P. O. Box 4312 Baton Rouge, LA 70821-4312 American Nuclear Insurers Attn: Library Town Center Suite 300S 29th S. Main Street West Hartford, CT 06107-2445

Attachment 1 to W3F1-2011-0072 180-Day Steam Generator Tube Inspection Report for the 17TH Refueling Outage to W3F1-2011-0072 Page 1 of 19 Refuel (RF) 17 180-Day Special Report In November 2010, Entergy determined that plans to replace Steam Generators during RF17 were challenged due to damage to the Replacement Steam Generators [RSG] during hydrostatic testing. This condition was entered into the sites Corrective Action Program under Condition Report CR-WF3-2010-07045. Entergys final decision to operate the original steam generators for an additional cycle [Cycle 18] was made in January 2011.
Waterford Three (WF3) Technical Specification (TS) 6.9.1.5 requires Entergy Operations to submit a 180 day report to the NRC that outlines the details of the steam generator (SG) tubing inspections that were performed during the reporting period. The report shall include:
6.9.1.5 A. The scope of inspections performed on each steam generator.
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 and assessment of accident-induced leakage from all tubesheet indications.
H. Effective plugging percentage for all plugging in each generator.
Entergy performed a SG inspection in April, 2011 during refueling outage RF17. Waterford 3 began RF17 with 7943 in SG31 and 8093 in SG32 tubes in service. This inspection was the 17th in-service inspection (ISI) since the start of commercial operation in September 1985 and the 1st of four scheduled inspections in the 5th sequential inspection period. The unit initially entered MODE 4 following this inspection on May 8, 2011.
References
: 1. W3F1-2006-0070 dated 12-20-06 to U.S. NRC, Entergy Actions to Address RF14 Batwing Failures [ADAMS Accession Number ML063600109]
: 2. Augmented Batwing Examination [CMS A-27017] [Required]
to W3F1-2011-0072 Page 2 of 19 DESIGN The Waterford 3 Model 70 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 ft&#xb2; 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 tube sheet (CEs Explansion 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 (01H - 07H, 01C - 07C) three horizontal partial eggcrates supports (08H-10H, 08C - 10C) two anti-vibration straps (hot and cold batwings, BW1 and BW9) seven vertical straps (BW2 through BW8)
A.        The Scope of Inspections Performed on Each Steam Generator.
The RF17 initial inspection plan included:
: 1.          100% full length 0.600 bobbin examination (Rows 3 and up), 100% 0.600 bobbin examination of hot and cold leg straight sections in Rows 1 and 2
: 2.          100% +Point' inspection of all eggcrate distorted signal indication (DSI) signals
: 3.          100% +Point inspection of all >2V dents at eggcrates (based on RF15 bobbin data)
: 4.          20% +Point inspection at dented diagonal bar and vertical strap locations >2V
: 5.          20% +Point inspection at freespan dings >5V
: 6.          100% hot leg Top of Tube Sheet (TTS) +Point inspection in each SG from 3 inches above to 12 inches below TTS
: 7.          100% Row 1 and 2 small radius U-bend +Point inspection in each SG using a mid-range +Point coil
: 8.          100% +Point inspection of all newly reported indications at diagonal bar and vertical straps (confirmation of mechanism)
: 9.          100% +Point inspection of historical % Through Wall (TW) indications at diagonal bar and vertical straps to W3F1-2011-0072 Page 3 of 19
: 10.        100% +Point inspection special interest testing including:
: a.      freespan signals unresolved in history or showing change
: b.      any bobbin signal suggestive of tube wear at eggcrate structures
: c.      any bobbin signal suggestive of axial degradation within the cold leg tubesheet region
: d.      possible loose part (PLP) or loose part indication (LPI) signals reported either by bobbin or MPRC; all surrounding tube locations were inspected with MPRC
: e.      Three tube deep peripheral cold leg top of tubesheet inspection with +Point coil from 3 inches above to 3 inches below top of tubesheet (PLP concern)
: 11.        Plug visual examination
: a.      100% of the installed plugs were visually examined for signs of leakage.
: 12.        Secondary side inspection and Foreign Object Search and Retrieval (FOSAR)
The inspection plan was developed to specifically address the areas of active degradation as well as areas expected to be affected based on recent industry experience as well as experience from the Fall 2009 [RF16] Waterford 3 inspection and recent industry inspection results. These included:
: a.      FOSAR of annulus region at the top of the tubesheet,
: b.      Bottom up visual of the batwings in the central stay cavity.
: c.      Video probe inspection of the batwings in the central stay cavity (45-degree),
and
: d.      Visual and Ultrasonic Test (UT) inspection of the feed ring.
to W3F1-2011-0072 Page 4 of 19 B.      Active Degradation Mechanisms Found.
Axial Outside Diameter Stress Corrosion Cracking (ODSCC) at non-dented hot and cold leg eggcrate intersections in SG31 and SG32 Axial ODSCC at non-dented vertical strap (BW2 to BW8) intersections in SG31 and SG32 Circumferential Primary Water Stress Corrosion Cracking (PWSCC) at the hot leg expansion transition and expanded tubesheet region in SG31 and SG32 Axial PWSCC at the hot leg expansion transition and expanded tubesheet region in SG31 and SG32 Wear at eggcrate, diagonal bar (BW1, BW9), and vertical strap sites (BW2 to BW8) in SG31 and SG32 Axial ODSCC in the freespan region in SG31 not associated with dings Axial ODSCC in the freespan region in SG31 and SG32 associated with dings to W3F1-2011-0072 Page 5 of 19 C.      Nondestructive Examination Techniques Utilized for Each Degradation Mechanism.
Table C-1 Techniques Probe and Technique Sheet Application: Detection and Confirmation: Waterford 3 RF17 Degradation Location Detection ETSS - Confirmation        ETSS -   Detection App. H/I Mechanism                Probe Detection Probe Type Confirmation Variable Qualified?
Type Existing Degradation Mechanisms Circ        Row 1 and     Mid-     #96511.2     N/A          N/A                Yes PWSCC        2 U-bends   Range both SGs    +Point:
Row 1 and     High     #99997.1     N/A          N/A    Phase       Yes 2 U-bends    Freq.
both SGs -   +Point high noise Tube Wear     Eggcrate   Bobbin    #96004.1  +Point (1)  #96004.1   Phase       Yes Supports,                                    (bobbin Diagonal                                     sizing) and                                    #96910.1 Vertical                                   (+Point)
Bars Axial       (Eggcrates,  Bobbin    #I28413,    +Point    #I28425,   Phase       Yes ODSCC         Diagonal             #96008.1              #21409.1 and Vertical Bars)
Axial        Freespan    Bobbin    #I28413,    +Point    #I28425,   Phase       Yes ODSCC                              #96008.1              #21409.1 Axial       Sludge pile  +Point    #I28424,     N/A          N/A    Phase       Yes ODSCC             and              #21409.1 expansion transition Circ ODSCC     Hot leg   +Point    #21410.1     N/A          N/A    Phase       Yes TTS expansion transition Axial          Hot Leg   +Point    #20511.1     N/A          N/A    Phase       Yes PWSCC             TTS expansion transition and expanded tubesheet Circ PWSCC Expanded      +Point    #20510.1     N/A          N/A    Phase       Yes tube in tubesheet and expansion transition (7) to W3F1-2011-0072 Page 6 of 19 Probe and Technique Sheet Application: Detection and Confirmation: Waterford 3 RF17 Degradation Location Detection ETSS - Confirmation          ETSS -    Detection App. H/I Mechanism                 Probe Detection Probe Type Confirmation Variable Qualified?
Type Tube Wear         All    Bobbin   #27091.2     +Point     #21998.1    Phase     Yes (4)
(loose parts)  locations TTS     +Point   #21998.1      N/A          N/A      Phase      Yes periphery and tube lane Potential Degradation Mechanisms Axial     Row 1-2 U- Mid-range #96511.2      N/A          N/A      Phase      Yes PWSCC         bends    +Point .
Row 1-2 U-   High    #99997.1      N/A          N/A      Phase      Yes bends:     Freq.
high noise  +Point Axial     Wear Sites Bobbin #96004.1,       +Point     #21409.1,   Phase    No (2, 6)
ODSCC        on Bars            #96008.1               #I28425 (1)
Circ ODSCC      Dented    +Point   #22842.1      N/A          N/A      Phase      Yes Eggcrates and Support Bars Volumetric    Freespan   Bobbin   #27091.2     +Point     #21998.1    Phase      Yes wall loss Pitting   Sludge Pile Bobbin   #96005.2     +Point     #21998.1    Phase      Yes Axial       Dented    +Point   #96703.1      N/A          N/A      Phase      Yes PWSCC       Supports Axial      Freespan   Bobbin   #24013.1     +Point     #22401.1    Phase      Yes ODSCC       Dings < 5 V
Axial      Freespan   +Point   #22401.1      N/A          N/A      Phase      Yes ODSCC      dings >5V, dented support structures
                  >2V Wear at      Dented    +Point                 N/A          N/A      Phase     No (3)
Dented     Eggcrates                (5)
Supports        and Support Bars to W3F1-2011-0072 Page 7 of 19 Non-Relevant Degradation Mechanisms in the RF17 EC Inspection Scope Degradation Location Detection              ETSS - Confirmation         ETSS -     Detection App. H/I Mechanism                     Probe       Detection Probe Type Confirmation        Variable Qualified?
Type Oblique          Large     +Point       #96511.2      N/A               N/A      Phase        Yes PWSCC           Radius U-bends Axial and Circ    Cold Leg     +Point       #20511.1      N/A              N/A       Phase        Yes ODSCC and        TTS and                   #20510.1      N/A              N/A       Phase        Yes PWSCC         expanded                   #21409.1      N/A              N/A       Phase        Yes tube in                 #21410.1      N/A              N/A       Phase        Yes tubesheet                  #I28424       N/A              N/A       Phase        Yes Bobbin       #I28413     +Point          #I28424      Phase        Yes PWSCC          CL Tube      +Point:      #20511.1      N/A               N/A      Phase        Yes Ends     +Point       #20510.1      N/A               N/A      Phase        Yes Tube-to-Tube      Square     Bobbin or     #96004.1    +Point          #96910.1     Phase        Yes Contact Wear bend region      +Point            or
(+/-12                #96910.1, inches)                     plus (8)
Resolution for Classification of Indications Location     Detection      ETSS - Confirmation Disposition Probe       Detection Probe Type Type Potential           All     Bobbin       #96010.1    +Point        ETSS for flaw  Phase        Yes MBMs                                                            type confirmed if any Permeability          All     Bobbin       #96010.1   Mag. Bias      ETSS for flaw  Phase        Yes Variations                  Mag. Bias                 +Point       type confirmed Bobbin                                     if any To Be Defined      Bobbin      +Point      #I28425,#2     N/A               N/A      Phase        Yes Signals at                  1409.1 Suspected Wear Sites not yet characteriz ed Notes for Table C-1 (1): This inspection is included to characterize bobbin signals at diagonal bars and vertical straps as either wear or ODSCC based on recommendation of Section 3.6.c of Steam Generator Management Program: PWR SG Examination Guideline: Revision 7. EPRI, Palo Alto, CA: 2007 1013706.
(2): No industry qualification exists for this mechanism at this location. MRS-TRC-1708, Bobbin Detection of Wear at Dented Vertical Straps and Diagonal Bars, Westinghouse Electric Co.
LLC, December 2005 provides site validation of the technique for Waterford 3.
(3): No industry qualification exists for this mechanism at this location. LTR-CDME-07-119, Site Validation of Wear + Denting and Wear + ODSCC for Palisades, Westinghouse Electric Company LLC, May 2007 provides site validation of the technique for Waterford 3. The to W3F1-2011-0072 Page 8 of 19
      +Point coil is judged sufficient for detection of indications >40%TW in all dented intersections at Waterford 3.
(4): No industry qualification exists for the three frequency bobbin mix at the top of tubesheet for this mechanism. ETSS 27091.2 is judged to provide detection conditions consistent with qualification bases in the three-frequency mode.
(5): No industry qualification for combined volumetric and SCC conditions. Reference 15 LTR-CDME-07-119, Site Validation of Wear + Denting and Wear + ODSCC for Palisades, Westinghouse Electric Company LLC, May 2007 provides site validation of the technique for Waterford 3.
(6): Both techniques are individually qualified for detection of either wear or axial ODSCC. For combined signals, the amplitude and phase responses are expected to bound the response for individual signals. Reference 15 provides site validation of the +Point technique for Waterford 3.
(7): RF16 circumferential PWSCC indications were reported in SG31 at 14 below the top of tubesheet and in SG32 in the expansion transition.
(8): LTR-SGMP-09-12, Bobbin Coil Detection Capability of Tube to Tube Contact Wear, Westinghouse Electric Co. LLC, February 2009.
to W3F1-2011-0072 Page 9 of 19 D.       Location, Orientation (if linear), and Measured Sizes (if available) of Service Induced Indications.
See Attachment 2 for the following Tables Table D-1 SG31 Service Induced Indications- Crack Indications- RF17 Table D-2 SG32 Service Induced Indications- Crack Indications - RF17 Table D-3 SG31 Service Induced Indications- Wear at Supports - RF17 Table D-4 SG32 Service Induced Indications- Wear at Supports - RF17 Table D-5 SG31 Service Induced Indications - Historical Volumetric to W3F1-2011-0072 Page 10 of 19 E.       Number of Tubes Plugged During the Inspection Outage for Each Active Degradation Mechanism.
Table E-1 Tube Plugging Tube Status                                                       SG - 31 SG - 32 Tubes inservice prior to RF17                                       7943    8093 Total Number of tubes previously removed from service               1407    1257 Repair Candidates from RF 17:
Hot Leg Top of Tubesheet Axial Indications (Above TTS)                1       0 Hot Leg Top of Tubesheet Circ. Indications (Above TTS)                1       0 Hot Leg Tube Sheet Axial Indications (Within Tubesheet)               7       4 Hot Leg Tube Sheet Circ. Indications (Within Tubesheet)               2       1 Tubesheet with Axial and Circumferential Indications                  0       0 Tubesheet and Support Plate with Axial Indications                    0       0 Tubesheet Circumferential and Support Plate Axial Indications         0       0 Egg-Crate With Axial Indications                                     42      16 Batwings With Axial Indication                                        2       1 Batwings With Axial Indication and Support Plate Axial Indication     0       0 Hot Leg Freespan Axials                                               3       0 Batwings With Volumetric Indication                                   0       0 Hot Leg Volumetric Indications                                        0       0 Cold Leg Volumetric Indications                                       0       0 Row 1 - Row 2 U-Bend Indications                                      0       0 U-Bend Indications                                                    2       1 Bobbin Percents => 40%                                                0       2 Customer Decision to Plug                                             1       0 Total Candidate Tubes to be Repaired                                 61      25 Hot Leg 54" Stabilizers Installed During RF17*                        2       1 Hot Leg 268" Stabilizers Installed During RF17*                       0       0 Hot Leg 384" Stabilizers Installed During RF17*                       0       0 Cold Leg 54" Stabilizers Installed During RF17*                       0       0 Cold Leg 268" Stabilizers Installed During RF17*                      0       0 Cold Leg 384" Stabilizers Installed During RF17*                      0       0 Hot Leg Total Tubes Deplugged and Replugged - Post RF17               0       2 Cold Leg Total Tubes Deplugged and Replugged - Post RF17              0       0 Total Repair                                                      SG - 31 SG - 32 Total Stabilizers Installed - RF17                                    2       1 Total Tubes Plugged - Post RF17                                     1468    1282 Total SG % Plugged - Post RF17                                     15.7%   13.7%
Note: Above Tubesheet is all calls => .01" above.
Note: Within Tubesheet is all calls =<.00".
Note: *Denotes Includes Deplugged tubes See Attachment 2 for the following Tables Table E-2 SG31 Plugging List - RF17 Table E-3 SG32 Plugging List - RF17 to W3F1-2011-0072 Page 11 of 19 F.       Total Number and Percentage of Tubes Plugged to Date.
Table F-1 WF3 Historical Plugging Year        Outage    EFPY     SG31   SG32    Total   Cum % Cumulative Plugs  Plugs            Plug  Plugging 1985         Pre-               154    169     323      1.7    323 Service 1986         RF01       1.01     0      0       0       1.7    323 0
1987         RF02       2.08      0      1       1      1.7     324 1989         RF03       3.31     11      8      19      1.8     343 1991         RF04       4.55    161    161     322      3.6     665 1992         RF05       5.83      4      5       9      3.6     674 1994         RF06       7.15      4      2       6      3.6     680 1995         RF07       8.52     15      4      19      3.7     699 1997         RF08       9.90     29     26      55      4.0     754 1999         RF09     11.02      12     10      22      4.2     776 2000         RF10     12.37      28     38      66      4.5     842 2002         RF11     13.70      26     10      36      4.7     878 2003         RF12     15.18     127     50     177      5.6    1055 2005         RF13     16.68     247    223     470      8.2    1525 2006         RF14     18.12     358   460*     818     12.5    2343 2008         RF15     19.41     143     51     194     13.6    2536 2009         RF16     20.79      88     40     128     14.2    2664 2011         RF17     22.26      61     25      86     14.7    2750 Total Plugged to Date        1468   1282    2750             2750 Percent Plugged to Date       15.70  13.71            14.7
*Includes tube plugged on one end to W3F1-2011-0072 Page 12 of 19 G.         The Results of Condition Monitoring, Including the Results of Tube Pulls and In-situ Testing and Assessment of Accident-Induced Leakage from all Tubesheet Indications.
Waterford 3 did not perform any tube pulls. Three in-situ tests were required and performed in RF17.
Summary of In Situ Pressure Testing As part of Waterford 3s adherence to perform In-situ Screening in accordance with EPRI, TR-1014983, Steam Generator In-Situ Pressure Test Guidelines, Rev. 3, all indication identified were screened with three tests required.
The tubes requiring in-situ testing were entered into Entergys corrective action program. There were no tubes with Circumferential Cracks that met the in-situ testing criteria.
At RF17, R9 C125, R74 C88, and R95 C55, all in SG31, were in situ pressure tested in a full tube mode. That is, the entire tube length was pressurized, not just the localized flaw. Tube R9 C125 required the full tube test due to the flaw length exceeding the test chamber length of the local tool. Tube R74 C88 required the full tube test due to the location of the flaw, which was just below the square bend, which prevented the local tool to be fully inserted. Tube R95 C55 could have been tested with the local tool however the decision was made to test all in the full tube mode to expedite the testing process.
Since the tubes were tested in a full tube mode pressurized water was applied to the tube ID for all test pressures. As such, if leakage would have occurred at any time during the testing it would have been detected.
The maximum test pressure applied to all tubes was a minimum of 4900 psi. No leakage or burst was reported. Each tube tested achieved an actual pressure of 5000 psi.
Post test +Pt examination was performed for each in-situ test. None of the flaws experienced significant change, suggesting that the indicated flaw depths were not as deep as anticipated.
CR-WF3-2011-02578 - A flaw was found in SG31 Row 9 Column 125 in the freespan between 01Hot and 02Hot eggcrate supports. Based on the size of the flaw, screening and profiling for possible in-situ pressure testing is required. This flaw is inspected with the Appendix I technique of the SG Program Guidelines.
CR-WF3-2011-02616 - Second Flaw in SG31 Requires In-Situ Pressure Testing. A flaw was found in SG31 Row 74 Column 88 at BW1. Based on the size of the flaw, screening and profiling for possible in-situ pressure testing is required.
CR-WF3-2011-02642 - A flaw was found in Steam Generator 31 (SG MSG0001) tube Row 95 Column 55 in the freespan between 01Hot and 02Hot eggcrate supports.
Based on the size of the flaw, screening and profiling for possible in-situ pressure testing is required. This flaw is inspected with the Appendix I technique of the SG Program Guidelines.
to W3F1-2011-0072 Page 13 of 19 Tube R9C125 in SG31 which had been called DFH (distorted freespan historical) in previous inspections was called DFI (distorted freespan indication) this outage.
The indication was reported by the resolution analyst because it showed possible crack like characteristics from bobbin probe. The area was Rotating Pancake Coil (RPC) +Point (+PT) tested and was reported as a 7 long crack like signal indicative of axial ODSCC. As a result, the +PT RPC program was expanded to include all reported freespan bobbin indications regardless of any history change from 1994. This expansion included 882 tubes in S/G 31 and 812 tubes in S/G32. All of these freespan indications were tested by RPC from structure below to structure above the indication.
No additional flaws were identified as a result of these expanded inspections.
Table G1 Waterford RF17 Flaw Summary of Indications to be In Situ Pressure Tested SG    Row     Col     Location     +Pt V       Max        Total      Str.      Str. Eq. Calculate (300 khz)   Depth      Length     Eq.       Length    d Burst (1)                   Depth               Pressure (2) 31    9       125     01H +23      0.84        75         7.18       65.7      1.47      3039 31    74      88      BW1 +2       0.55        67         1.44       62.1      0.65      4105 31    95      55      01H +12      0.88 (3)    76         0.68       74        0.60      3082 (1): ODSCC depths are calculated using EPRI ETSS I28432 amplitude based sizing regression.
(2): Burst pressures calculated at lower 95% probability at 650oF.
(3): Axial ODSCC in freespan ding. The resultant signal formed by combination of the ding and flaw lead to an artificially elevated voltage which in turn results in a gross overestimate of depth.
Table G2 Summary of Flaw Parameters for In Situ Pressure Tested Tubes Row    Col    Pre        Pre       Pre       Post      Post       Post       Observations 300        Length    Phase     300       Length     Phase kHz                  Angle     kHz                  Angle
              +Pt V                          +Pt V 9      125    0.84       7.18      104       0.90      7.09       115        No significant change (1) 74     88     0.55       1.44      100       0.61      1.47       95         No observable change 95     55     0.88       0.75      12        0.80      0.84       11         No observable change (1): A slight change in the signal formation was observed. This has been observed in laboratory pressure testing of EDM notches, a slight bulge occurs on the tube ID, possibly due to elastic elongation of the tube during pressurization and dimpling of the ID surface upon contraction. This has been observed for EDM notch depths as shallow as 40%TW.
Based on the Waterford 3 RF17 inspection results and in-situ pressure testing, no tubes contained indications which represented a challenge to structural or leakage integrity and all condition monitoring requirements are satisfied. Structural and leakage integrity was established by analysis and through comparison of past in situ testing results as well as by comparison of observed flaw parameters against the leaking testing thresholds established by EPRI TR-1014983 Steam Generator In Situ Pressure Test Guidelines Rev 3.
to W3F1-2011-0072 Page 14 of 19 No primary to secondary leakage is predicted for the eddy current indications observed at RF17 in the event of a postulated Steam Line Break (SLB) event. The relative severity levels of the observed degradation was judged consistent with or bounded by the levels associated with the RF16 inspection, and recent inspections of similar CE SGs.
Waterford 3 has a current Plant Specific Leakage limit of 0.375 gallons per minute for an accident-induced leakage limit and applies a reduction of 0.1 gallons per minute to this value to provide the basis for the approved tube leakage integrity criteria. The inspection requirements described in TS 6.5.9.c.1 applies an alternate repair criteria [C*] which utilized this reduction. The predicted leakage is zero, thus the accident-induced leakage limit is met.
WF3 Cycle 17 Pri-to-Secondary Leakage 2.50 2.00 1.50 gpd   1.00 0.50 0.00 12/10/2009   1/10/2010   2/10/2010   3/10/2010   4/10/2010   5/10/2010   6/10/2010   7/10/2010    8/10/2010   9/10/2010   10/10/2010   11/10/2010   12/10/2010   1/10/2011   2/10/2011   3/10/2011 Date Cold Leg Volumetric Indications In SG31, one tube (R2 C156) was reported with a volumetric signal just above the top of tubesheet. This location was also reported as a volumetric signal at RF16, RF15 and at RF14.
At RF14, FOSAR showed no evidence of a foreign object/loose part and the +Pt eddy current data showed no evidence of a PLP. An object was likely adjacent to this tube at one point in time but is no longer present. At RF14 the indication was sized at 21%TW and left in service.
This indication has been sized and justified for continued operation at each subsequent outage; the estimated depth based on the +Pt signal amplitude has remained essentially constant over this period. The slight difference in depth reports from outage to outage is due to the different calibration curves for each outage.
At RF15, in SG32 a volumetric signal (R104 C30) was reported the approximate mid-span elevation between just above the 07H eggcrate. A review of the bobbin history data shows no change in the signal since 1994. This signal is most likely attributed to a manufacturing artifact, such as a lap. The depth based on sizing with the +Point coil according to ETSS 21998.1 was 19%TW at RF15; there was no change in the signal response at RF16. At RF17 the NDE results were No Degradation Found (NDF) / No Degradation Detected (NDD) at this location.
This tube remains in service.
to W3F1-2011-0072 Page 15 of 19 One tube in SG31 was plugged due to data quality reasons associated with copper deposits (CUD). The location is R64 C10 at the 01H eggcrate location. The signal was not in the flaw-plane but still could potentially mask an indication so the Integrity Engineer conservatively decided to remove tube from service. The copper signal did not meet the in-situ screening criteria and there were no other similar signals.
Secondary Side Inspections The secondary inspection plans for RF17 were developed to ensure component integrity. The utilitys original Steam Generator replacement outage was deferred from RF17 to RF18.
Entergy has a commitment to complete augmented inspections of the Steam Generator batwings. Additional directed inspections were performed to address the conditions identified during RF16 Secondary Side Inspections.
Augmented Inspections Entergy committed to performing augmented examinations of the batwings. These inspections were completed during RF17.
The augmented examinations for RF17 were performed under WO-00259170 and WO-00259181. The augmented examination results were reviewed and evaluated by Engineering.
For SG31 and SG32 the RF17 augmented inspection result is documented in CR-WF3-2006-03966 CA-0067.
Inspections of Steam Generator #1 (SG 31) and Steam Generator #2 (SG32) were performed during the Spring 2011 Refuel 17 (RF17) outage to determine if there were any changes in extent of condition or the critical variables that were the basis for the mitigating actions taken in Refuel 14 (RF14), Mid-Cycle 15 (MC15) outage Operational Assessment, Refuel 15 (RF15),
and Refuel 16 (RF16). The visual inspections performed consisted of an upper batwing weld and wrap around bar inspection, diagonal 45&#xba; Through-Tube Bundle Inspection, a Bottom-Up Inspection of the batwings in the central stay cavity region, and a Foreign Object Search and Retrieval (FOSAR).
The RF17 secondary side visual inspections of failed batwings in SG 31 revealed some small changes due to additional broken batwings found at the perforated bar; however, the inspection videos indicate the progression of the batwing condition in SG 31 appears to be following the progression of SG32.
The RF17 secondary side visual inspections of failed batwings in SG 32 showed little or no change from previous inspections.
All inspection results met the established acceptance criteria. There were no changes to the extent of condition or the critical variables that were the basis for the mitigating actions taken in RF14, MC15 Operational Assessment, RF15, and RF16. Additionally, the assessments performed in RF14, MC15 outage, RF15, and RF16 remain valid and bounding.
Waterford 3 originally had planned on replacing both steam generators during RF17; however, subsequent to hydrostatic testing, which is the last step in the SG fabrication process, to W3F1-2011-0072 Page 16 of 19 Westinghouse discovered the separation of stainless steel cladding from the carbon steel base metal in the channel head of both SGs. It was concluded that necessary repairs would not be completed in time to support SG installation during RF17 and SG replacement was deferred until RF18 (Fall 2012) outage. Therefore in accordance with commitment A27017 Waterford 3 performed an augmented inspection of the SG secondary side during RF17.
The full augmented inspection report is attached to a Condition Report Corrective Action. [CR-WF3-2006-03966 CA-0067]
Directed Inspections During RF16, limited feedring erosion and a detached T-vent were identified during secondary side inspections. These conditions were entered into the Sites Corrective Action Program. The conditions were evaluated for a single cycle [Cycle 17] of operation under Engineering Evaluation, EC-18652.
This condition was considered a Significantly Degraded Non-Conformance and tracked by a corrective action, CR-WF3-2006-03966 CA-00068 with the planned RF17 SG replacement.
Due to the Steam Generator replacement deferral until RF18, a directed inspection plan for RF17 was developed to establish the basis for continued operation and identify any additional degradation. The directed inspections included the re-examination of the RF16 locations to establish wear rates and component conditions. These examinations included UT and visual examinations. Acceptance criteria was established with the aid of Westinghouse prior to the outage.
The directed inspections were completed concurrently with the Augmented Examinations but were documented separately. The secondary side directed inspections were documented in WO-261343 and WO-261344. The RF17 directed examinations as found conditions were evaluated for Cycle 18 Operation under Engineering Evaluation, EC-28600. The result of the evaluation determined that it was acceptable to operate the W3 original SG for an additional cycle. Attached to the engineering evaluation are Westinghouse Letters LTR-SGDA-11-47 Requirements for Inspection of the Internal Feedwater Piping Assembly at Waterford 3 during RF17 [March 2011] and LTR-SGDA-11-108 Review and Assessment of Results of Inspection of the Internal Feedwater Header Assembly at Waterford Unit 3 during RF17 [April 2011].
These letters established acceptance criteria and evaluated the inspection results.
This condition continues to be a non-conformance condition with a single cycle [Cycle 18] of operation evaluated. An additional corrective action, CR-WF3-2006-03966 CA-0081 is in-place to address the non-conformances under the unlikely event that the SG replacement does not occur during RF18.
Foreign Object/Loose Parts Wear Examinations for loose parts were performed as planned. The PLP indications were re-examined and bounding MPRC exams were performed. A total of 12 tubes were added in S/G 31 and 5 tubes were added in S/G 32 to the +PT RPC special interest program to encompass all adjacent tubes to Cold Leg Top of Tubesheet PLP (Possible Loose Part) indications. A total of 8 tubes were tested in S/G 32 H/L to encompass a PLP reported above the Tubesheet area.
All other PLP indications were already boxed in at the area of the PLP indication from the Top of to W3F1-2011-0072 Page 17 of 19 Tubesheet Hot Leg +PT RPC program. No new foreign object associated wear was reported at RF17.
FOSAR was performed at the TTS peripheral annulus and tube lane region. In SG31 a metallic clip thought to be part of a dosimeter was retrieved from the annulus.
In SG32 several pieces of gasket were observed and could not be removed. The first and most significant of these two was reported at R145 C73/R144 C74/R143 C75. This object was reported during the Cycle 14 mid cycle outage. Repeated attempts to remove the object were unsuccessful. Since these tubes were plugged using sentinel plugs (on the cold leg) to address potential batwing to wrap around bar weld failures, potential through-wall penetration could lead to inadvertent plant shutdown due to leakage.
R144 C74 was deplugged on the hot leg side and eddy current inspected to assess the interaction condition with the object. No degradation was reported from eddy current testing.
Based on this it was judged that the object represented a negligible potential to result in primary-to-secondary leakage during Cycle 18. Tube R144 C74 was replugged.
Another piece of gasket was observed in the vicinity of R139 C63. The WF3-RF17 Potential Loose Part Evaluation describes the analysis supporting continued operation of SG32 with these objects remaining.
The WF3-RF17 Potential Loose Part Evaluation was performed under the Sites Corrective Action Program and is attached to CR-WF3-2011-2601 CA-008.
to W3F1-2011-0072 Page 18 of 19 OVERALL CONCLUSIONS During the Waterford RF17 steam generator tube inspection, no indications exceeding the structural integrity limits for either axial or circumferential degradation (i.e., burst integrity > 3 times normal operating primary to secondary pressure differential across SG tubes) were encountered.
While the calculated burst pressures of some indications were less than the performance criterion, the verification of structural and leakage integrity was performed by in situ pressure testing.
Therefore, no tubes were identified to contain eddy current indications that could potentially challenge the tube integrity requirements of NEI 97-06. Similarly, all operational assessment structural and leakage integrity requirements are satisfied at EOC-18 for the degradation mechanisms observed at EOC-17. The projected EOC-18 indication maximum depths are all below the breakthrough depth associated with leakage at SLB conditions of 95%TW for long (i.e., >0.43 inch, the through wall (TW) critical flaw length associated with burst at three time normal operating pressure differential) flaws. Based on the observed indications at RF17, the Waterford 3 SGs are expected to meet all structural and leakage integrity requirements at EOC-18.
to W3F1-2011-0072 Page 19 of 19 H. Effective Plugging Percentage for all Plugging in Each Generator.
Table H-1 Effective Plugging Percentage Generator     # Plugged    % Plugged SG31           1468         15.70%
SG32           1282         13.71%

Attachment 2 to W3F1-2011-0072 Additional Tables Relative to the 17th Refueling Outage Steam Generator Tube Inspection Report to                         Table D-1 W3F1-2011-0072              SG31 Service Induced Indications Page 1 of 28                    Crack Indications - RF17 Count SG    ROW  COL VOLTS DEG  IND   LOCN    INCH1  INCH2  CRLEN CRWID 1    31    10   12  0.26  83  SAI    07C      0.39   0.89   0.5  0.33 2    31    27   19  0.28  24  SAI    BW5      0.98          0.9  0.35 3    31    31   31  0.34 112  SAI    07H     -0.17         0.27  0.38 4    31    46   32  0.35 122  SAI    07H     -0.39         0.52  0.38 5    31    88   32  0.22 107  SAI    01H      0.11   0.6   0.53  0.45 6    31    31   35  0.24 103  SAI    05H     -0.61         0.35  0.37 7    31    42   36  0.17  92  SAI    06H      0.67         0.17  0.34 8    31    27   37  0.28  92  SAI    07H      0.36          0.3  0.34 9    31    119  37  1.72  18  SAI    TSH      0.69   1.03  0.34  0.34 10   31    25   47   0.6  94  SAI    TSH     25.16  25.38  0.22  0.38 11   31    50   48  0.29  83  SAI    05H      0.65     1   0.37  0.28 12   31    50   50  0.31 116  SAI    06H      0.51         0.44  0.31 13   31    95   55  0.88  12  SAI    01H     11.36  11.74  0.75  0.26 14   31    35   57  0.41 105  SAI    06H     -0.02   0.87  0.89  0.34 15   31    35   57   0.4 111  SAI    06H      0.33         0.93  1.18 16   31    30   58  0.19 101  SAI    01H     -0.86  -0.67  0.19  0.44 17   31    38   58  0.34 121  SAI    06H     -0.99  -0.08  0.91  0.34 18   31    40   58  0.26 126  SAI    07H      0.01          0.5  0.33 19   31    59   61  0.25  86  SAI    05H      0.51   0.58  0.29  0.36 20   31    44   64  0.57  12  SAI    TSH     -0.45  -0.38  0.12  0.38 21   31    40   66  0.44 106  SAI    05H      -0.3  -0.11  0.19  0.43 22   31    72   72  0.29 108  SAI    08H      0.49   1.18  0.68  0.27 23   31    71   73  0.24 104  SAI    05H      0.39   1.06  0.75  0.29 24   31    75   73  0.26 116  SAI    05H       0.6         0.56  0.26 25   31    59   77  0.23 101  SAI    05H      0.92         0.29  0.26 26   31    74   88  0.55 117  SAI    BW1      1.97   3.37  1.41  0.45 27   31    86   88  0.25  93  SAI    05H       0.7    0.9  0.22  0.27 28   31    58   94  0.19  89  SAI    07H      0.43   0.57  0.19  0.22 29   31    76   98  0.95  20  SCI    TSH      -3.2  -2.95  0.25  0.19 30   31    75  101  0.27 114  SAI    05H      0.25   0.48   0.7  0.32 31   31    68  102  0.42  15  SCI    TSH     -0.08  0.08    0.1  0.25 32   31    82  104  0.08  74  SAI    06H       0.5   0.95  0.43  0.2 33   31    82  104  0.32 105  SAI    06H      0.73   1.18  0.46  0.28 34   31    86  106  1.48  24  SCI    TSH     -7.21         0.18  0.4 35   31    108 108  0.22  82  SAI    07H      0.45         0.51  0.33 36   31    47  113  0.91  20  SAI    TSH     -0.86   -0.5  0.35  0.48 37   31    49  113  0.81  16  SAI    TSH     -2.17  -1.97   0.2  0.47 38   31    49  113  0.91  16  SAI    TSH     -1.16  -0.91  0.25  0.53 39   31    49  113   0.7  16  SAI    TSH     -0.51  -0.31   0.2  0.53 40   31    18  114  0.55  15  SAI    TSH      -1.5  -1.37  0.23  0.37 41   31    18  114  0.79  19  SAI    TSH     -0.63  -0.25   0.2  0.37 42   31    14  116  0.26 101  SAI    07H     -0.75         0.38  0.27 43   31    16  116  0.75  18  MAI    TSH     -1.79  -0.76  0.45  0.46 44   31    16  116  0.47  16  SAI    TSH     -1.16  -1.26  0.25  0.34 to                         Table D-1 W3F1-2011-0072              SG31 Service Induced Indications Page 2 of 28                    Crack Indications - RF17 Count SG    ROW  COL VOLTS DEG  IND   LOCN    INCH1  INCH2  CRLEN CRWID 45   31    16  116  0.79  18  SAI    TSH     -0.58  -0.96  0.38  0.34 46   31    116 116  0.26 131  SAI    09H     23.09  25.99  5.19  0.32 47   31    21  117  0.48  99  SAI    07C      0.35   0.98  0.53  0.26 48   31    26  118  0.83  15  SAI    TSH     -1.51  -1.09  0.28  0.46 49   31    19  119  0.44 103  SAI    07H      0.57         0.72  0.31 50   31    21  119   0.3  98  SAI    04H      0.26         0.42  0.29 51   31    24  120  0.22  90  SAI    01H      0.26         0.25  0.32 52   31    77  123  0.22  98  SAI    07H     -0.38          0.3  0.29 53   31     2  124  0.32 101  SAI    07H      0.18   0.53  0.35  0.45 54   31    48  124  0.41 119  SAI    07H     -0.72         0.82  0.33 55   31     9  125  0.05 146  SAI    01H      12.3           0   0.24 56   31     9  125   0.2 142  SAI    01H     15.79           0   1.18 57   31     9  125  0.84 109  SAI    01H     22.99           0   0.24 58   31     9  125   0.2 111  SAI    01H     29.51           0   0.24 59   31     9  125  0.14 152  SAI    01H     33.84           0   0.24 60   31    51  131  0.44 105  SAI    07H     -0.17         0.47  0.27 61   31    16  140  0.31 108  SAI    04H      0.94         0.38  0.44 62   31     9  143  0.19 110  SAI    06H      0.89         0.64  0.31 63   31    31  143  0.44 104  SAI    07H      0.62          0.4  0.35 64   31    34  144  1.16  18  SAI    TSH      -5.8   -5.3   0.5  0.38 65   31    21  147  0.16 104  SAI    07H     -0.95         0.17  0.24 66   31    21  147  0.34  97  SAI    07H      0.15         0.22  0.27 67   31    101 147   0.2 149  SAI    01H      0.77         0.55  0.61 68   31    36  152  0.45 105  SAI    07H      0.7          0.48  0.33 69   31    29  159  0.38  96  SAI    07H     -0.76  -0.21  0.59  0.39 70   31     8  160  0.33 126  SAI    03H      0.85         0.14  0.37 71   31    10  162  0.26 145  SAI    03H      0.9          0.24  0.32 72   31    54  164  0.21 113  SAI    BW4      0.27         0.13  1.18 to                        Table D-2 W3F1-2011-0072              SG32 Service Induced Indications Page 3 of 28                    Crack Indications - RF17 Count SG    ROW  COL VOLTS DEG  IND  LOCN    INCH1  INCH2  CRLEN CRWID CEG 1    32     7   35  0.22 137  SAI   07C      0.91         0.16  0.31  47 2    32    89   35  0.37  99  SAI   07H       0.5   0.83  0.33  0.27  42 3    32    92   36  0.23 108  SAI   BW4     -0.97         0.42  0.2   31 4    32    27   37  0.32  85  SAI   07H     -0.77  -0.61  0.16  0.25  39 5    32    27   37  0.26 107  SAI   07H      0.51  0.77   0.26  0.24  37 6    32    28   50   0.3  89  SAI   03H      0.72           0   1.18 180 7    32    28   50   0.2 100  SAI   06H      0.75         0.38  0.42  64 8    32    93   57   0.2  77  SAI   01H      -0.6           0   1.18 180 9    32    76   76  0.18  85  SAI   06H      0.83          0.3  0.31  47 10   32    68   94  0.23  82  SAI   07H      0.83         0.21  0.35  53 11   32    98   98   0.6  8   SAI   09H      7.81   8.4   0.45  0.27  42 12   32    64  102  0.12  51  SAI   01H      0.79         0.75  0.53  80 13   32    39  111  0.93  14  SAI   TSH     -3.99  -3.89  0.08  0.34  51 14   32    39  111  0.72  13  SAI   TSH     -3.26  -3.14  0.08  0.43  66 15   32    71  111  0.67  15  SAI   TSH     -1.59   -1.5  0.08  0.43  66 16   32    54  114  0.74  17  SAI   TSH     -3.46  -3.28  0.18  0.42  64 17   32    54  114  0.96  21  SAI   TSH     -3.18    -3   0.18  0.48  74 18   32    39  115  0.65  12  SAI   TSH     -2.93  -2.84  0.18  0.28  43 19   32    39  115  0.83  13  SAI   TSH     -2.44   -2.3   0.2  0.39  59 20   32    12  116  0.36  74  SAI   07H      0.41         0.56  0.28  43 21   32    42  120  0.69  23  SCI   TSH     -0.17  0.04   0.29  0.31  47 22   32    55  123  0.22 102  SAI   03H      0.91         0.26  0.65 100 23   32    101 127   0.3 111  SAI   07H     -0.68         0.23  0.27  42 24   32    11  131  0.21 103  SAI   01H       0.7         0.51  0.5   77 25   32    92  132  0.27  94  SAI   01H      -0.6         0.29  0.45  69 26   32     7  137  0.22 121  SAI   07C      0.4   0.67   0.27  0.28  43 27   32    20  152  0.25 135  SAI   07C     0.49    0.7   0.21  0.26  40 28   32    22  152  0.22 118  SAI   04H      0.59   0.94  0.35  0.48  74

Attachment 2 to                     Table D-3 W3F1-2011-0072          SG31 Service Induced Indications Page 4 of 28                 Wear at Supports - RF17 Count    SG       ROW  COL VOLTS    DEG       IND      PER   LOCN INCH1 1       31        20   4  0.08      0       PCT        7    01C    0.5 2       31        41   5  0.29      0       PCT       12    06H  -0.89 3       31        8    6  0.27      0       PCT       17    03H   0.85 4       31        42   6  0.36      0       PCT       20    BW5  -0.46 5       31        5    7  0.26      0       PCT       16    07H  -0.47 6       31        5    7  0.32      0       PCT       18    07H  -0.62 7       31        15   9  0.31      0       PCT       13    03H   0.87 8       31        74  14  0.25      0       PCT       10    BW1  -1.86 9       31        74  14  0.44      0       PCT       16    BW4   0.89 10       31        19  15  0.28      0       PCT       11    BW5  -0.86 11       31        19  15  0.26      0       PCT       10    BW5    0.8 12       31        61  15  0.45      0       PCT       17    BW5  -0.89 13       31        61  15  0.22      0       PCT       9     BW5   0.32 14       31        61  15  0.36      0       PCT       14    BW5    0.8 15       31        61  15  0.95      0       PCT       27    BW6  -1.11 16       31        61  15  0.42      0       PCT       16    BW6   0.95 17       31        36  16  0.35      0       PCT       21    BW5   1.01 18       31        64  16  0.46      0       PCT       17    BW5  -0.98 19       31        64  16  0.27      0       PCT       11    BW5   0.92 20       31        45  17  0.21      0       PCT       9     BW5  -0.94 21       31        45  17  0.34      0       PCT       13    BW5   0.88 22       31        36  18  0.34      0       PCT       13    BW5  -1.01 23       31        36  18  0.26      0       PCT       10    BW5   0.81 24       31        62  18  0.44      0       PCT       23    BW4   0.83 25       31        42  20  0.32      0       PCT       20    BW5  -0.79 26       31        81  21  0.54      0       PCT       25    08C   0.71 27       31        32  22  0.28      0       PCT       11    BW5  -0.99 28       31        78  22  0.33      0       PCT       13    BW5   0.98 29       31        78  22  0.35      0       PCT       14    BW6   0.96 30       31        70  24  0.45      0       PCT       16    BW5  -0.82 31       31        70  24  0.42      0       PCT       16    BW6   0.85 32       31        5   25  0.34      0       PCT       19    07H  -0.44 33       31        5   25  0.33      0       PCT       18    07H  -0.51 34       31        37  25   0.3      0       PCT       12    BW5  -0.78 35       31        37  25  0.18      0       PCT       8     BW5  -0.03 36       31        37  25   0.3      0       PCT       12    BW5   0.88 37       31        19  27  0.34      0       PCT       20    BW5   1.04 38       31        77  27  0.29      0       PCT       12    BW4  -0.77 39       31        77  27  0.35      0       PCT       14    BW5   -0.8 40       31        77  27  0.33      0       PCT       13    BW5   0.78 41       31        77  27   0.5      0       PCT       17    BW6  -0.81 42       31        77  27  0.35      0       PCT       14    BW6   0.75 43       31        91  27  0.21      0       PCT       9     08C  -0.33 44       31        50  28  0.17      0       PCT       13    BW5  -0.75 45       31        50  28  0.44      0       PCT       23    BW5   0.98 46       31        66  28  0.33      0       PCT       20    03C    0.2 47       31       105  29  0.25      0       PCT       11    BW7  -0.82

Attachment 2 to                     Table D-3 W3F1-2011-0072          SG31 Service Induced Indications Page 5 of 28                 Wear at Supports - RF17 Count    SG       ROW  COL VOLTS    DEG       IND      PER   LOCN INCH1 48       31       105  31  0.27      0       PCT       16    BW7  -1.09 49       31       105  31   0.3      0       PCT       17    04C   0.75 50       31       107  31  0.44      0       PCT       16    BW7  -0.72 51       31        82  32  0.27      0       PCT       18    BW4   0.65 52       31       100  32  0.36      0       PCT       14    09H  -0.79 53       31       114  34  0.34      0       PCT       19    BW9   1.55 54       31        61  35  0.39      0       PCT       15    BW5   1.11 55       31        61  35  0.37      0       PCT       14    BW6   1.01 56       31        77  35  0.25      0       PCT       10    BW5   -0.8 57       31        77  35  0.22      0       PCT       10    BW5   0.96 58       31       105  35  1.05      0       PCT       29    BW5   0.85 59       31        59  37  0.47      0       PCT       24    BW6  -0.92 60       31       119  37  0.14      0       PCT       10    09H  -0.09 61       31       119  37   0.3      0       PCT       17    10H  -0.98 62       31        80  38  0.23      0       PCT       10    BW4   -0.8 63       31        80  38  0.31      0       PCT       12    BW4   0.89 64       31        80  38  0.22      0       PCT       10    BW5   -0.8 65       31        80  38  0.57      0       PCT       19    BW6  -0.89 66       31        82  38   0.4      0       PCT       15    BW5  -0.74 67       31        82  38  0.98      0       PCT       26    BW6  -0.74 68       31        21  39  0.21      0       PCT       9     BW5   0.91 69       31        51  39   0.2      0       PCT       15    BW6   1.16 70       31       113  39  0.64      0       PCT       21    BW7   0.92 71       31        2   40   0.4      0       PCT       15    04C   0.88 72       31        42  40  0.25      0       PCT       17    BW5   0.89 73       31        50  40  0.33      0       PCT       20    BW5  -0.76 74       31        37  41  0.21      0       PCT       15    BW5    -1 75       31        39  41  0.86      0       PCT       32    BW5  -1.06 76       31        39  41  0.25      0       PCT       17    BW5   0.83 77       31        51  41  0.23      0       PCT       16    BW6   0.89 78       31       102  42  0.68      0       PCT       27    BW3  -0.66 79       31        1   43  0.07      0       PCT        3    07H   0.35 80       31        59  43   0.2      0       PCT       9     BW5   0.92 81       31       105  45  0.34      0       PCT       20    BW7   0.96 82       31       123  45   0.4      0       PCT       15    02H   1.05 83       31        22  46  0.18      0       PCT       8     BW5  -0.95 84       31       128  46  0.24      0       PCT       15    02H  -0.09 85       31       129  47  0.11      0       PCT       5     01C   0.85 86       31        45  49  0.03      0       PCT       2     BW5   0.08 87       31        45  49  0.33      0       PCT       20    BW5   0.96 88       31        59  49  0.36      0       PCT       21    BW5   0.64 89       31        99  51  0.26      0       PCT       18    04H   0.27 90       31       131  51  0.13      0       PCT       6     10H  -0.82 91       31       131  51  0.33      0       PCT       13    10H   0.82 92       31        46  52  0.53      0       PCT       26    BW5   0.89 93       31        43  53  0.56      0       PCT       26    BW5    0.9 94       31       105  53  0.48      0       PCT       17    BW3  -0.86

Attachment 2 to                     Table D-3 W3F1-2011-0072          SG31 Service Induced Indications Page 6 of 28                 Wear at Supports - RF17 Count     SG       ROW  COL VOLTS    DEG       IND      PER   LOCN INCH1 95       31       133  53  0.31      0       PCT       13    09C  -0.85 96       31       133  53  0.36      0       PCT       14    08C   0.89 97       31        22  54   0.2      0       PCT       14    BW5  -0.82 98       31        82  54  0.77      0       PCT       24    BW5  -0.94 99       31        82  54  1.03      0       PCT       28    BW5   0.74 100       31        82  54   0.3      0       PCT       12    BW6  -0.86 101       31        82  54  0.33      0       PCT       13    BW6   0.96 102       31        19  55  0.69      0       PCT       28    BW5   1.08 103       31        41  55  0.26      0       PCT       12    BW5   0.79 104       31        24  56  0.21      0       PCT       9     BW5   -0.8 105       31        50  56  0.38      0       PCT       15    BW5  -0.76 106       31        50  56  0.57      0       PCT       20    BW5   0.92 107       31        23  57  0.32      0       PCT       19    BW5    0.9 108       31        41  57  0.34      0       PCT       14    BW5   0.98 109       31        51  57  0.25      0       PCT       16    BW4    0.8 110       31       125  57  0.44      0       PCT       16    08C   0.52 111       31       133  57  0.21      0       PCT       9     08C  -0.22 112       31       135  57  0.36      0       PCT       14    10H   0.85 113       31        76  58  0.31      0       PCT       13    BW6  -0.85 114       31       129  59  0.38      0       PCT       14    BW3  -0.49 115       31       137  59  0.29      0       PCT       12    BW2   -0.8 116       31        24  60  0.27      0       PCT       11    BW5  -0.81 117       31        30  60  0.44      0       PCT       16    BW5   0.86 118       31       138  60  0.46      0       PCT       17    09H  -1.01 119       31        81  61  0.53      0       PCT       22    BW4   0.86 120       31       133  61  0.24      0       PCT       10    BW5  -0.78 121       31       133  61  0.24      0       PCT       10    BW5   0.86 122       31        82  62  0.35      0       PCT       14    BW4    -1 123       31        82  62  0.26      0       PCT       11    BW5   1.09 124       31        82  62   0.3      0       PCT       12    BW6  -0.66 125       31       138  62  0.34      0       PCT       19    01H   0.79 126       31        19  63  0.14      0       PCT       11    BW5  -0.72 127       31        19  63  0.45      0       PCT       23    BW5   1.11 128       31        35  63  0.37      0       PCT       20    BW5  -0.69 129       31        35  63  0.46      0       PCT       23    BW5   0.92 130       31        61  63  0.25      0       PCT       16    BW5  -0.83 131       31        61  63  0.46      0       PCT       23    BW5   0.86 132       31        63  63  0.39      0       PCT       21    BW4  -0.71 133       31        63  63  0.24      0       PCT       16    BW4    0.8 134       31        63  63  0.35      0       PCT       20    BW5   0.86 135       31        63  63  0.44      0       PCT       23    BW6   0.76 136       31       133  63  0.27      0       PCT       17    BW5   0.84 137       31       139  63  0.28      0       PCT       11    BW1  -1.61 138       31        23  65   0.3      0       PCT       18    BW5   0.96 139       31       135  65  0.28      0       PCT       11    BW8  -0.84 140       31       137  65  0.17      0       PCT       7     BW2  -0.62 141       31       137  65  0.28      0       PCT       11    BW4   0.95

Attachment 2 to                     Table D-3 W3F1-2011-0072          SG31 Service Induced Indications Page 7 of 28                 Wear at Supports - RF17 Count     SG       ROW  COL VOLTS    DEG       IND      PER   LOCN INCH1 142       31        42  66  0.34      0       PCT       18    06C   0.78 143       31        44  66  0.56      0       PCT       24    BW5   0.98 144       31        46  66  0.39      0       PCT       15    BW9   1.74 145       31        50  66  1.72      0       PCT       37    BW5  -0.88 146       31        50  66  0.21      0       PCT       9     BW5  -0.43 147       31        50  66  0.21      0       PCT       9     BW5   0.88 148       31        51  67  0.05      0       PCT       5     BW4  -0.75 149       31        51  67  1.01      0       PCT       32    BW4   0.92 150       31        51  67  0.38      0       PCT       20    BW5  -0.71 151       31        51  67   0.2      0       PCT       13    BW6   -0.9 152       31       121  67  0.24      0       PCT       17    03H   0.84 153       31       135  67  0.28      0       PCT       12    BW3  -0.68 154       31        40  68  0.26      0       PCT       11    BW5   0.89 155       31        46  70  0.62      0       PCT       20    BW5  -0.88 156       31        46  70  0.46      0       PCT       17    BW5  -0.16 157       31        46  70  0.87      0       PCT       25    BW5   0.98 158       31        50  70  0.33      0       PCT       13    BW5   0.75 159       31       138  70  0.29      0       PCT       17    08C   0.81 160       31        78  72  0.41      0       PCT       16    08C  -0.92 161       31        82  72  0.33      0       PCT       13    08C     0 162       31       108  74   0.3      0       PCT       20    BW3  -0.97 163       31       103  75  0.22      0       PCT       10    02H    0.8 164       31       138  76  0.32      0       PCT       18    09C  -1.01 165       31       133  77  0.35      0       PCT       14    BW3  -0.53 166       31       133  77  0.29      0       PCT       11    BW4  -0.66 167       31        68  78  0.51      0       PCT       18    BW6    1.1 168       31       136  78  0.21      0       PCT       14    BW2  -0.96 169       31        61  79  0.29      0       PCT       17    BW5   0.97 170       31        78  80  0.33      0       PCT       12    BW5  -0.65 171       31        78  80  0.25      0       PCT       10    BW6   0.81 172       31        96  80  0.19      0       PCT       8     03H   0.87 173       31        83  81  0.33      0       PCT       20    BW3   0.95 174       31       107  81  0.27      0       PCT       18    BW3   0.45 175       31       143  81  0.38      0       PCT       14    03H  -0.99 176       31        82  82  0.59      0       PCT       27    BW5   0.96 177       31        93  83  0.35      0       PCT       13    BW9   1.51 178       31       119  83  0.35      0       PCT       13    07C  -0.09 179       31        82  84  0.14      0       PCT       6     BW6  -0.84 180       31        82  84  0.28      0       PCT       11    BW6   0.87 181       31        83  87  0.26      0       PCT       11    BW7   1.15 182       31        70  88   0.3      0       PCT       12    BW9  -0.62 183       31        55  89  0.42      0       PCT       15    BW1   -1.8 184       31        69  91  0.14      0       PCT       7     BW9  -0.49 185       31       121  91  0.26      0       PCT       10    02H  -0.83 186       31       144  92  0.23      0       PCT       10    04H   0.92 187       31        71  93  0.37      0       PCT       15    BW9  -1.64 188       31       133  93  0.23      0       PCT       15    BW1  -1.39

Attachment 2 to                     Table D-3 W3F1-2011-0072          SG31 Service Induced Indications Page 8 of 28                 Wear at Supports - RF17 Count     SG       ROW  COL VOLTS    DEG       IND      PER   LOCN INCH1 189       31       139  93  0.11      0       PCT       10    BW1  -1.85 190       31       139  93  0.05      0       PCT       4     BW9   1.99 191       31        56  94  0.58      0       PCT       19    BW9   4.01 192       31        69  95  0.32      0       PCT       13    BW9   1.93 193       31        82  96  0.57      0       PCT       27    BW5  -0.76 194       31        83  97  0.38      0       PCT       22    BW5  -0.78 195       31        83  97  0.22      0       PCT       16    BW5   0.74 196       31        83  97  0.33      0       PCT       21    BW6   -0.8 197       31        83  97  0.25      0       PCT       17    BW6   0.84 198       31       121  97  0.26      0       PCT       18    03H  -0.77 199       31        78  98  0.42      0       PCT       15    BW4   -0.7 200       31        78  98  0.08      0       PCT       3     BW4   0.89 201       31        78  98  0.46      0       PCT       16    BW6   0.93 202       31        78  98  0.26      0       PCT       10    08C   0.83 203       31       130  98  0.06      0       PCT       3     BW1  -1.59 204       31       134  98  0.26      0       PCT       11    01H   0.68 205       31        78 100  0.32      0       PCT       20    BW5  -0.67 206       31        78 100  0.19      0       PCT       15    BW5   0.06 207       31        78 100  0.34      0       PCT       21    BW5   0.77 208       31        78 100  0.26      0       PCT       18    BW6  -0.81 209       31        78 100  0.14      0       PCT       12    BW6  -0.15 210       31        78 100   0.6      0       PCT       28    BW6   0.77 211       31        98 100  0.06      0       PCT       10    04H   0.89 212       31        78 102  0.19      0       PCT       15    03H   -0.8 213       31       141 105  0.41      0       PCT       21    09H  -0.52 214       31       141 105  0.52      0       PCT       24    09H  -0.41 215       31        42 108  0.91      0       PCT       33    BW5  -0.58 216       31        42 108  0.15      0       PCT       13    BW5   0.29 217       31        42 108  0.69      0       PCT       29    BW5   1.06 218       31        78 108  0.49      0       PCT       25    BW4  -0.78 219       31        78 108  0.46      0       PCT       24    BW5  -0.84 220       31        78 108  0.25      0       PCT       17    BW6  -0.81 221       31       140 108  0.34      0       PCT       14    08H   0.94 222       31        39 111  0.12      0       PCT       6     BW5   0.36 223       31        39 111  0.68      0       PCT       22    BW5   1.05 224       31       131 111  0.34      0       PCT       13    09C   0.88 225       31        22 112  0.17      0       PCT       12    BW5   1.02 226       31        36 112   0.6      0       PCT       26    BW5  -0.62 227       31        40 112  0.25      0       PCT       16    BW5  -0.61 228       31        40 112  0.25      0       PCT       16    BW5   1.18 229       31        49 113  0.42      0       PCT       16    BW5   0.62 230       31       141 113  0.42      0       PCT       15    BW9  -1.79 231       31        45 115  0.32      0       PCT       13    BW5  -0.75 232       31        45 115  0.09      0       PCT       4     BW5  -0.29 233       31        45 115  0.24      0       PCT       10    BW5   0.94 234       31        49 115  0.37      0       PCT       14    BW5  -0.74 235       31        49 115  0.22      0       PCT       10    BW5    0.9

Attachment 2 to                     Table D-3 W3F1-2011-0072          SG31 Service Induced Indications Page 9 of 28                 Wear at Supports - RF17 Count     SG       ROW  COL VOLTS    DEG       IND      PER   LOCN INCH1 236       31        45 117  0.41      0       PCT       16    BW5  -0.68 237       31        99 117  0.27      0       PCT       18    BW4  -0.96 238       31       135 119  1.17      0       PCT       36    BW2  -0.27 239       31       135 119  0.64      0       PCT       28    BW2   0.79 240       31       135 119  0.15      0       PCT       12    BW3  -0.88 241       31       135 119  0.74      0       PCT       30    BW3   0.83 242       31       135 119  0.71      0       PCT       29    BW4  -0.98 243       31       135 119  0.11      0       PCT       10    BW4   0.42 244       31       135 119  0.68      0       PCT       28    BW4   0.87 245       31       135 119  0.38      0       PCT       22    BW7  -0.77 246       31       135 119   0.1      0       PCT       9     BW7  -0.06 247       31       135 119  0.21      0       PCT       15    BW7   1.09 248       31        22 120  0.17      0       PCT       11    BW5  -0.93 249       31        22 120  0.09      0       PCT       7     BW5   0.85 250       31       134 120  0.66      0       PCT       28    01C   0.88 251       31       133 121   0.7      0       PCT       29    BW2  -0.76 252       31       133 121  0.13      0       PCT       11    BW2   -0.1 253       31       133 121  1.28      0       PCT       37    BW2   0.73 254       31       133 121  0.35      0       PCT       21    BW3  -0.51 255       31       133 121  0.16      0       PCT       13    BW3     0 256       31       133 121  0.33      0       PCT       20    BW4   -0.8 257       31       134 122  0.26      0       PCT       11    02C  -0.71 258       31       132 124  0.23      0       PCT       10    08H   0.84 259       31       133 125  0.33      0       PCT       13    07C   -1.1 260       31        40 126  0.25      0       PCT       12    BW5  -0.52 261       31        72 126  0.36      0       PCT       13    BW4  -0.83 262       31        72 126  0.64      0       PCT       20    BW4   0.83 263       31        72 126  0.25      0       PCT       10    BW5  -0.92 264       31        72 126  0.25      0       PCT       10    BW5   0.12 265       31        82 126  0.27      0       PCT       11    BW6   1.07 266       31       131 127  0.11      0       PCT       10    07H  -0.74 267       31       131 127  0.27      0       PCT       18    07H   0.81 268       31        76 128  0.48      0       PCT       24    BW4   0.83 269       31        76 128  0.43      0       PCT       23    BW5  -0.68 270       31        76 128  0.24      0       PCT       17    BW5   0.09 271       31        76 128  0.39      0       PCT       22    BW5   1.05 272       31        76 128   0.4      0       PCT       22    BW6  -0.71 273       31        76 128  0.91      0       PCT       33    BW6   0.99 274       31       105 129  0.16      0       PCT       13    BW1     2 275       31       127 129  0.36      0       PCT       21    BW2  -0.76 276       31       128 130   0.2      0       PCT       9     01H    0.9 277       31       128 130  0.58      0       PCT       19    03C  -0.92 278       31        74 134   0.4      0       PCT       14    BW6   0.64 279       31        92 134  0.19      0       PCT       8     03C   0.18 280       31       123 135  0.23      0       PCT       16    09H   1.07 281       31       122 136  0.26      0       PCT       11    02C   0.83 282       31        63 137  0.25      0       PCT       13    BW4   -0.7

Attachment 2 to                     Table D-3 W3F1-2011-0072          SG31 Service Induced Indications Page 10 of 28                Wear at Supports - RF17 Count     SG       ROW  COL VOLTS    DEG       IND      PER   LOCN INCH1 283       31        63 137  0.42      0       PCT       18    BW5   -0.9 284       31        78 138  0.62      0       PCT       27    BW4  -0.86 285       31        78 138  0.15      0       PCT       12    BW4   0.92 286       31        82 138  0.25      0       PCT       17    BW4  -0.68 287       31        82 138  0.28      0       PCT       18    BW4   0.82 288       31        82 138  0.39      0       PCT       21    BW5   0.77 289       31        82 138  0.98      0       PCT       33    BW6   0.89 290       31       118 138   0.2      0       PCT       14    07H   0.22 291       31        1  139  0.24      0       PCT       15    04C    0.8 292       31        67 139  0.26      0       PCT       10    08C   0.86 293       31        76 140  0.21      0       PCT       15    BW4  -0.77 294       31        76 140  0.21      0       PCT       15    BW4   0.98 295       31        76 140  0.17      0       PCT       13    BW5  -0.71 296       31        76 140  0.26      0       PCT       17    BW5   0.25 297       31        76 140  0.29      0       PCT       18    BW5    0.8 298       31        76 140  0.14      0       PCT       11    BW6   0.18 299       31        76 140  0.83      0       PCT       31    BW6   0.77 300       31        82 140  0.62      0       PCT       27    BW4   1.15 301       31        82 140  0.88      0       PCT       32    BW6   -0.8 302       31        82 140  0.34      0       PCT       20    BW6   0.83 303       31        84 140  0.27      0       PCT       17    02H  -0.12 304       31        84 140  0.15      0       PCT       12    02H   0.99 305       31        92 140  0.15      0       PCT       12    02H   0.86 306       31       105 141  0.16      0       PCT       13    09C  -0.28 307       31        78 142  0.35      0       PCT       12    BW4  -0.83 308       31        78 142  0.27      0       PCT       10    BW4   0.83 309       31        78 142   0.3      0       PCT       11    BW5   0.09 310       31        78 142  0.42      0       PCT       14    BW6  -0.76 311       31        82 142  0.56      0       PCT       18    BW6  -0.71 312       31        98 142   0.2      0       PCT       9     09C  -0.43 313       31       105 143  0.32      0       PCT       20    09C   0.74 314       31       113 143  0.38      0       PCT       22    BW9   1.57 315       31        48 144  1.25      0       PCT       37    BW5  -0.95 316       31        48 144   0.5      0       PCT       25    BW5   1.05 317       31        74 144  0.34      0       PCT       20    BW5   0.78 318       31        74 144  0.47      0       PCT       24    BW6   0.78 319       31        78 144  1.35      0       PCT       38    BW4   -0.9 320       31        78 144  0.28      0       PCT       18    BW4   0.03 321       31        78 144  1.02      0       PCT       34    BW4   0.87 322       31        78 144  0.39      0       PCT       22    BW5  -0.75 323       31        78 144  0.64      0       PCT       28    BW5  -0.03 324       31        78 144   0.2      0       PCT       14    BW5   0.77 325       31        78 144   0.3      0       PCT       19    BW6  -0.68 326       31        78 144  1.02      0       PCT       34    BW6   0.92 327       31        95 145  0.42      0       PCT       23    09C    0.7 328       31        81 147  0.35      0       PCT       20    BW6   0.77 329       31       103 147  0.36      0       PCT       21    BW3   0.74

Attachment 2 to                     Table D-3 W3F1-2011-0072          SG31 Service Induced Indications Page 11 of 28                Wear at Supports - RF17 Count     SG       ROW  COL VOLTS    DEG       IND      PER   LOCN INCH1 330       31        76 148  0.13      0       PCT       12    BW4  -0.81 331       31       104 148  0.37      0       PCT       14    02C  -0.97 332       31        83 149  0.59      0       PCT       18    BW7   0.94 333       31       101 149  0.32      0       PCT       20    BW7   0.94 334       31       103 149  0.23      0       PCT       16    01H   0.83 335       31       102 150  0.31      0       PCT       12    07H    0.9 336       31        83 155  0.15      0       PCT       7     08C  -0.89 337       31        93 155  0.24      0       PCT       10    02C  -0.91 338       31        44 156  0.13      0       PCT       10    BW5    0.1 339       31        44 156  0.22      0       PCT       17    BW5   0.82 340       31        90 156   0.4      0       PCT       15    01C   0.69 341       31        48 158   0.4      0       PCT       15    BW5     0 342       31        82 158  0.88      0       PCT       33    01C   0.75 343       31        81 159  0.19      0       PCT       8     BW9   1.99 344       31        12 160  0.26      0       PCT       11    03H    1.1 345       31        79 161  0.43      0       PCT       16    02C   0.72 346       31        72 162  0.39      0       PCT       22    02C  -0.84 347       31        18 164  0.25      0       PCT       11    02H   0.85 348       31        60 164  0.44      0       PCT       16    01C  -0.97 349       31        1  167  0.38      0       PCT       20    03C   0.83 350       31        19 167  0.36      0       PCT       13    BW5  -1.11 351       31        19 167  0.58      0       PCT       19    BW5   0.82 352       31        1  169  0.32      0       PCT       18    03C  -0.19 353       31        1  169  0.19      0       PCT       13    03C   0.99 354       31        53 169  0.13      0       PCT       10    01H   0.06 355       31        42 170  0.46      0       PCT       16    01C   0.16 356       31        19 171  0.14      0       PCT       6     BW5  -0.98 357       31        16 172  0.38      0       PCT       15    01C  -0.33 358       31        21 173  0.24      0       PCT       10    BW5   0.97 359       31        25 173  0.24      0       PCT       10    01H  -0.67 360       31        25 173  0.27      0       PCT       11    01H   0.88 361       31        5  175  0.37      0       PCT       15    01C   -0.2

Attachment 2 to                     Table D-4 W3F1-2011-0072          SG32 Service Induced Indications Page 12 of 28                Wear at Supports - RF17 Count     SG      ROW COL VOLTS    DEG       IND     PER    LOCN INCH1 1       32       19   3  0.19      0      PCT       12     BW5  -0.87 2       32       19   3  1.24      0      PCT       34     BW5   0.92 3       32       46   6  0.36      0      PCT       16     BW5  -0.86 4       32       29   7  0.33      0      PCT       15     BW5  -0.71 5       32        2   8  0.3       0      PCT       14     BW9  -0.97 6       32       41   9  0.24      0      PCT       12     BW5  -0.35 7       32       44  10  0.23      0      PCT       14     BW5   -0.7 8       32       44  10  0.09      0      PCT        7     BW5  -0.26 9       32       44  10  0.67      0      PCT       26     BW5   1.02 10       32       65  11  0.28      0      PCT       16     01C   0.12 11       32       67  11  0.24      0      PCT       19     BW5   -0.9 12       32       67  11  1.36      0      PCT       35     BW6   -0.8 13       32       67  11  0.46      0      PCT       19     BW6   0.45 14       32       67  11  0.5       0      PCT       20     BW6    0.8 15       32       19  13  0.29      0      PCT       16     05H   0.36 16       32       23  15  0.2       0      PCT       13     BW5  -0.82 17       32       33  15  0.31      0      PCT       18     BW5  -0.82 18       32       44  16  1.25      0      PCT       35     BW5  -0.61 19       32       44  16  0.66      0      PCT       26     BW5    0.8 20       32       80  16  0.16      0      PCT       12     BW9   1.09 21       32       82  16  0.33      0      PCT       15     BW9  -1.37 22       32       35  17  0.21      0      PCT       11     BW5  -0.76 23       32       46  18  0.37      0      PCT       20     BW5  -0.77 24       32       46  18  0.36      0      PCT       19     BW5   0.96 25       32       46  18  0.43      0      PCT       21     07C   0.82 26       32       48  18  1.58      0      PCT       38     BW5  -0.73 27       32       48  18  0.22      0      PCT       14     BW5   0.06 28       32       48  18  0.99      0      PCT       32     BW5   0.96 29       32       62  18  0.33      0      PCT       18     01H   0.76 30       32       43  19  0.21      0      PCT       14     BW9   1.99 31       32       71  19  0.14      0      PCT       11     BW9   1.76 32       32       73  19  0.38      0      PCT       16     08C  -0.96 33       32       81  19  0.13      0      PCT        7     BW9   1.64 34       32        4  20  0.32      0      PCT       18     06C   -0.1 35       32       74  20  0.33      0      PCT       15     BW9  -1.93 36       32       80  20  0.31      0      PCT       18     BW9   1.54 37       32       82  20  0.2       0      PCT       10     BW9   1.75 38       32       90  20  0.31      0      PCT       14     05H   0.79 39       32       90  20  0.65      0      PCT       23     09H  -1.03 40       32       79  21  0.45      0      PCT       23     BW9   1.65 41       32       81  21  0.34      0      PCT       15     BW6  -0.88 42       32       81  21  0.16      0      PCT        9     BW9   1.39 43       32       93  21  0.19      0      PCT       13     04H   0.83

Attachment 2 to                      Table D-4 W3F1-2011-0072           SG32 Service Induced Indications Page 13 of 28                 Wear at Supports - RF17 Count    SG      ROW  COL VOLTS    DEG       IND     PER    LOCN INCH1 44      32       82   22  0.13      0      PCT        7     BW9  -1.81 45      32       82   22  0.28      0      PCT       13     BW9   1.94 46      32       79   23  0.34      0      PCT       19     BW9   1.78 47      32       76   24  0.3       0      PCT       18     BW4  -0.81 48      32       76   24  0.41      0      PCT       22     BW5  -0.91 49      32       76   24  0.44      0      PCT       23     BW6    0.9 50      32       76   24  0.29      0      PCT       18     BW9   1.51 51      32       82   24  0.3       0      PCT       14     BW9   1.81 52      32       19   25  0.68      0      PCT       25     BW5  -0.72 53      32       19   25  0.43      0      PCT       19     BW5    1.1 54      32       69   25  0.54      0      PCT       25     BW6   0.95 55      32       71   25  0.28      0      PCT       17     BW9   1.31 56      32       77   25  0.22      0      PCT       11     BW9   1.86 57      32       79   25  0.42      0      PCT       22     BW6   0.86 58      32       79   25  0.76      0      PCT       30     BW9   1.68 59      32       81   25  0.32      0      PCT       15     BW4  -1.02 60      32       81   25  0.29      0      PCT       14     BW9   1.52 61      32       101  25  0.12      0      PCT        6     BW1  -1.72 62      32       101  25  1.24      0      PCT       32     BW1   2.58 63      32       20   26  0.28      0      PCT       13     BW5  -0.74 64      32       76   26  0.2       0      PCT       14     BW9   1.87 65      32       80   26  0.36      0      PCT       20     08C  -0.78 66      32       82   26  0.2       0      PCT       14     BW5  -0.99 67      32       82   26  0.18      0      PCT       13     BW5   0.86 68      32       82   26  0.32      0      PCT       18     BW6  -0.78 69      32       82   26  0.75      0      PCT       28     BW6   0.75 70      32       82   26  0.38      0      PCT       20     08C   0.96 71      32        1   27  0.45      0      PCT       18     06C   0.7 72      32       23   27  0.27      0      PCT       16     BW5  -1.05 73      32       79   27  0.63      0      PCT       26     BW9   1.92 74      32       81   27  0.25      0      PCT       15     BW4  -1.03 75      32       81   27  0.22      0      PCT       14     BW4   0.65 76      32       81   27  0.26      0      PCT       15     BW5   0.79 77      32       81   27  0.54      0      PCT       24     BW6   0.73 78      32       101  27  0.49      0      PCT       22     BW9   1.85 79      32        4   28  0.37      0      PCT       20     05C  -0.61 80      32        4   28  0.28      0      PCT       17     03C  -0.78 81      32       80   28  0.21      0      PCT       12     BW6   -0.8 82      32       80   28  0.42      0      PCT       19     BW6   0.98 83      32       82   28  0.22      0      PCT       13     BW4  -0.87 84      32       82   28  0.19      0      PCT       11     BW4   0.84 85      32       82   28  0.27      0      PCT       14     BW5  -0.93 86      32       82   28  1.12      0      PCT       33     BW6   0.91

Attachment 2 to                      Table D-4 W3F1-2011-0072           SG32 Service Induced Indications Page 14 of 28                 Wear at Supports - RF17 Count     SG      ROW  COL VOLTS    DEG       IND     PER    LOCN INCH1 87       32        1   29  0.29      0      PCT       13     04C    0.8 88       32        1   29  0.56      0      PCT       21     03C   0.77 89       32       77   29  0.22      0      PCT       13     BW6  -0.73 90       32       77   29  0.73      0      PCT       26     BW6   0.92 91       32       81   29  0.25      0      PCT       14     BW4   0.22 92       32       48   30  0.25      0      PCT       15     BW5  -0.74 93       32       48   30  0.16      0      PCT       12     BW5   0.99 94       32       94   30  0.59      0      PCT       24     09C   0.03 95       32       94   30  0.23      0      PCT       13     09C   0.78 96       32        1   31  0.22      0      PCT       11     05C  -0.36 97       32        1   31  0.28      0      PCT       13     03C  -1.03 98       32        1   31  0.21      0      PCT       10     03C    0.8 99       32        3   31  0.77      0      PCT       27     05C   0.77 100      32       43   31  0.2       0      PCT       13     BW5  -0.84 101      32       107  31  0.3       0      PCT       17     BW1  -1.79 102      32       107  31  0.48      0      PCT       22     BW9   1.85 103      32       109  31  0.31      0      PCT       14     BW1  -1.34 104      32       109  31  0.15      0      PCT        8     BW1   1.19 105      32        4   32  0.26      0      PCT       16     05C  -0.91 106      32       46   32  0.52      0      PCT       21     BW5  -0.67 107      32       46   32  0.14      0      PCT        9     BW5   0.35 108      32       46   32  0.19      0      PCT       11     BW5   0.76 109      32       68   32  0.22      0      PCT       11     BW9   -1.7 110      32       76   32  0.1       0      PCT        6     BW9  -1.98 111      32       33   33  0.4       0      PCT       18     BW5  -0.75 112      32       79   33  0.19      0      PCT       10     BW9   1.38 113      32       81   33  0.52      0      PCT       21     BW5  -0.74 114      32       81   33  0.62      0      PCT       23     BW5    0.9 115      32       81   33  0.25      0      PCT       13     BW9   1.58 116      32       83   33  0.24      0      PCT       12     BW5   0.94 117      32       111  33  0.54      0      PCT       24     BW9   1.74 118      32       46   34  0.37      0      PCT       20     BW5  -0.81 119      32       46   34  0.29      0      PCT       17     BW5   0.97 120      32       82   34  0.15      0      PCT        9     BW9  -1.91 121      32       59   35  0.17      0      PCT       11     BW6   0.16 122      32       59   35  0.94      0      PCT       30     BW6   0.81 123      32       69   35  0.35      0      PCT       19     BW5   0.88 124      32       77   35  0.26      0      PCT       16     BW5   1.02 125      32       83   35  0.16      0      PCT       11     BW3   0.79 126      32       83   35  0.76      0      PCT       28     BW5    0.9 127      32       83   35  0.48      0      PCT       22     BW7  -0.94 128      32       83   35  0.46      0      PCT       22     BW7   0.94 129      32       111  35  0.42      0      PCT       17     09H   -0.9

Attachment 2 to                      Table D-4 W3F1-2011-0072           SG32 Service Induced Indications Page 15 of 28                 Wear at Supports - RF17 Count     SG      ROW  COL VOLTS    DEG       IND     PER    LOCN INCH1 130      32       100  36  0.18      0      PCT       12     BW5  -0.75 131      32       108  36  0.64      0      PCT       26     BW1   1.49 132      32       43   37  0.59      0      PCT       23     BW5   -0.7 133      32       43   37  0.45      0      PCT       20     BW5   0.83 134      32       77   37  0.23      0      PCT       12     BW4  -0.78 135      32       77   37  0.38      0      PCT       17     BW4   0.96 136      32       77   37  0.25      0      PCT       13     BW5  -0.87 137      32       77   37  0.54      0      PCT       21     BW5   0.91 138      32       111  37  0.43      0      PCT       18     BW1   2.01 139      32       117  37  0.29      0      PCT       16     05H   -0.9 140      32       108  38  0.23      0      PCT       11     03H   1.04 141      32       118  38  0.29      0      PCT       16     02H   -0.9 142      32       41   39  0.37      0      PCT       19     BW5   0.93 143      32       115  39  0.17      0      PCT       12     BW9   1.89 144      32       117  39  0.34      0      PCT       15     BW5  -0.86 145      32       44   40  0.52      0      PCT       21     BW5  -0.96 146      32       44   40  0.07      0      PCT        5     BW5   0.54 147      32       44   40  0.25      0      PCT       13     BW5   0.93 148      32       46   40  0.26      0      PCT       13     BW5   0.87 149      32       94   40  0.85      0      PCT       27     BW3  -0.74 150      32       94   40  0.23      0      PCT       12     BW4  -0.96 151      32       94   40  0.22      0      PCT       11     BW5  -0.77 152      32       94   40  0.24      0      PCT       12     BW5   1.14 153      32       94   40  0.22      0      PCT       11     BW6  -0.72 154      32       94   40  0.85      0      PCT       27     BW6   0.97 155      32       81   41  1.33      0      PCT       34     BW5  -0.71 156      32       81   41  1.33      0      PCT       34     BW5     1 157      32       81   41  0.77      0      PCT       26     BW6  -0.85 158      32       81   41  0.16      0      PCT        9     BW6   0.58 159      32       83   41  0.3       0      PCT       14     BW3   0.99 160      32        2   42  0.43      0      PCT       18     05C  -0.97 161      32       76   42  0.28      0      PCT       15     BW6   0.99 162      32       82   42  0.53      0      PCT       23     08C   0.96 163      32       96   42  0.46      0      PCT       19     BW3  -0.76 164      32       96   42  0.23      0      PCT       11     BW3   0.85 165      32       96   42  0.66      0      PCT       23     BW5  -0.85 166      32       114  42  0.44      0      PCT       22     08C   0.74 167      32       113  43  0.22      0      PCT       11     BW9   1.29 168      32       119  43  0.18      0      PCT       13     08C   -0.4 169      32       119  43  0.29      0      PCT       18     08C   0.81 170      32       125  43  0.19      0      PCT       10     04C   0.19 171      32       125  43  0.58      0      PCT       22     03C   0.86 172      32        2   44  0.22      0      PCT        7     03H   0.76

Attachment 2 to                      Table D-4 W3F1-2011-0072           SG32 Service Induced Indications Page 16 of 28                 Wear at Supports - RF17 Count     SG      ROW  COL VOLTS    DEG       IND     PER    LOCN INCH1 173      32       22   44  0.2       0      PCT       11     BW5  -0.76 174      32       40   44  0.19      0      PCT       10     BW9   1.59 175      32       126  44  0.32      0      PCT       15     03C   -0.9 176      32        1   45  0.39      0      PCT       16     04C  -0.27 177      32        1   45  0.23      0      PCT       11     04C    0.7 178      32       43   45  0.21      0      PCT       13     BW5   0.74 179      32       67   45  0.52      0      PCT       21     BW5   1.03 180      32       109  45  0.38      0      PCT       19     BW6   -0.7 181      32       127  45  0.33      0      PCT       15     02H   0.92 182      32       127  45  0.3       0      PCT       14     05C  -0.97 183      32       127  45  0.51      0      PCT       20     02C   0.78 184      32       46   46  0.28      0      PCT       16     BW5   1.04 185      32       48   46  0.29      0      PCT       16     BW5  -0.84 186      32       48   46  0.16      0      PCT       11     BW5   0.91 187      32       80   46  0.75      0      PCT       28     08C  -0.94 188      32        1   47  0.29      0      PCT       13     05C  -0.87 189      32        1   47  1.56      0      PCT       36     05C   0.86 190      32       43   47  0.19      0      PCT       10     BW5  -0.88 191      32       77   47  0.24      0      PCT       15     BW4  -0.73 192      32       44   48  0.43      0      PCT       19     BW5     1 193      32       80   48  1.14      0      PCT       32     BW5  -0.74 194      32       126  48  0.3       0      PCT       18     09C  -0.96 195      32        3   49  0.3       0      PCT       18     05C  -0.98 196      32       77   49  0.29      0      PCT       14     BW5   0.98 197      32       79   49  0.24      0      PCT       12     BW6  -0.58 198      32       81   49  0.78      0      PCT       26     BW5   0.98 199      32       81   49  0.47      0      PCT       20     BW6  -0.64 200      32       81   49  0.15      0      PCT        8     BW6   0.43 201      32       81   49  0.27      0      PCT       13     BW6   1.07 202      32       81   49  0.64      0      PCT       23     08C   0.76 203      32       81   49  0.27      0      PCT       13     07C  -0.91 204      32       44   50  0.36      0      PCT       18     BW5  -0.54 205      32       56   50  0.26      0      PCT       15     05C   0.79 206      32        1   51  0.38      0      PCT       16     04C   0.75 207      32       47   51  0.34      0      PCT       16     BW5   0.95 208      32       77   51  0.76      0      PCT       28     BW4  -0.79 209      32       77   51  1.03      0      PCT       32     BW6  -0.77 210      32       77   51  0.3       0      PCT       16     BW6  -0.25 211      32       77   51  0.23      0      PCT       14     BW6    0.8 212      32       83   51  0.26      0      PCT       15     BW7   1.15 213      32       44   52  0.54      0      PCT       22     BW5  -0.77 214      32       44   52  0.38      0      PCT       17     BW5   0.96 215      32       46   52  0.53      0      PCT       21     BW5  -0.79

Attachment 2 to                      Table D-4 W3F1-2011-0072           SG32 Service Induced Indications Page 17 of 28                 Wear at Supports - RF17 Count     SG      ROW  COL VOLTS    DEG       IND     PER    LOCN INCH1 216      32       48   52  0.23      0      PCT       12     BW5  -0.83 217      32       134  52  0.17      0      PCT       12     05H  -1.02 218      32       134  52  0.29      0      PCT       17     BW1   1.58 219      32       134  52  0.27      0      PCT       17     BW2   0.83 220      32       134  52  0.33      0      PCT       19     BW9   1.64 221      32       134  52  0.24      0      PCT       15     08C  -0.93 222      32        1   53  0.28      0      PCT       13     04C  -0.91 223      32       35   53  0.2       0      PCT       13     BW5  -0.79 224      32       35   53  0.26      0      PCT       15     BW5   1.07 225      32       69   53  0.14      0      PCT        9     BW9    1.9 226      32       73   53  0.36      0      PCT       17     BW5  -0.86 227      32       73   53  0.62      0      PCT       24     BW5   0.92 228      32       73   53  1.2       0      PCT       33     BW6  -0.59 229      32       73   53  0.73      0      PCT       26     BW6   0.03 230      32       73   53  0.6       0      PCT       24     BW6   0.84 231      32       36   54  0.29      0      PCT       16     BW5  -0.83 232      32       82   54  0.68      0      PCT       26     BW4   0.64 233      32       114  54  0.54      0      PCT       22     BW7   0.92 234      32       81   55  0.37      0      PCT       18     BW5   0.98 235      32       107  55  0.59      0      PCT       23     BW5   0.09 236      32       107  55  0.56      0      PCT       22     BW5   0.89 237      32       107  55  0.42      0      PCT       19     BW6  -0.89 238      32       129  55  0.41      0      PCT       17     09C  -0.93 239      32       24   56  0.19      0      PCT       10     BW5  -0.96 240      32       52   56  0.55      0      PCT       25     BW6   2.71 241      32       94   56  0.23      0      PCT       13     BW3  -0.81 242      32       94   56  0.37      0      PCT       18     BW4  -0.78 243      32       94   56  0.44      0      PCT       20     BW5   0.85 244      32       51   57  0.28      0      PCT       17     BW6   0.59 245      32       73   57  0.2       0      PCT       13     BW5   -0.7 246      32       73   57  0.16      0      PCT       11     BW5   1.04 247      32       73   57  0.09      0      PCT        7     BW6   0.06 248      32       73   57  0.58      0      PCT       24     BW6   0.46 249      32       73   57  0.89      0      PCT       30     BW6   0.85 250      32       77   57  0.39      0      PCT       19     BW5  -0.76 251      32       77   57  0.24      0      PCT       14     BW6  -0.83 252      32       81   57  0.96      0      PCT       31     BW4  -0.72 253      32       81   57  0.3       0      PCT       17     BW4   0.06 254      32       81   57  0.3       0      PCT       16     BW4   0.82 255      32       81   57  0.36      0      PCT       19     BW5  -0.78 256      32       81   57  0.23      0      PCT       14     BW5   0.83 257      32       81   57  0.13      0      PCT        9     BW6   -0.7 258      32       81   57  0.17      0      PCT       11     BW6   0.46

Attachment 2 to                      Table D-4 W3F1-2011-0072           SG32 Service Induced Indications Page 18 of 28                 Wear at Supports - RF17 Count     SG      ROW  COL VOLTS    DEG       IND     PER    LOCN INCH1 259      32       81   57  0.31      0      PCT       17     BW6   0.95 260      32       83   57  0.66      0      PCT       26     BW3  -0.63 261      32       83   57  0.32      0      PCT       17     BW5  -0.75 262      32       83   57  0.1       0      PCT        8     BW5   0.81 263      32       37   59  0.3       0      PCT       18     BW5    0.6 264      32       43   59  0.32      0      PCT       19     BW5  -0.79 265      32       43   59  0.62      0      PCT       27     BW5   0.92 266      32       83   59  0.37      0      PCT       18     BW7  -0.98 267      32       41   61  0.22      0      PCT       15     BW5   1.09 268      32       77   61  1.01      0      PCT       32     BW4   -0.7 269      32       77   61  0.82      0      PCT       29     BW4   1.06 270      32       133  61  0.47      0      PCT       20     BW3   0.75 271      32       133  61  0.61      0      PCT       23     BW5   0.72 272      32       137  61  0.31      0      PCT       15     09C  -1.03 273      32       41   63  0.22      0      PCT       15     BW9   1.75 274      32       43   63  1.38      0      PCT       38     BW5   0.89 275      32       137  63  0.23      0      PCT       12     09C  -1.06 276      32       44   64  0.41      0      PCT       17     BW5   0.89 277      32       82   64  0.45      0      PCT       21     BW4  -0.67 278      32       82   64  1.16      0      PCT       34     BW4   0.18 279      32       82   64  1.73      0      PCT       40     BW4   1.03 280      32       82   64  0.76      0      PCT       28     BW6  -0.74 281      32       82   64  0.38      0      PCT       19     BW6     0 282      32       82   64  0.3       0      PCT       16     BW6   0.68 283      32       92   64  0.55      0      PCT       23     BW5   0.89 284      32       118  64  0.25      0      PCT       15     04H   0.93 285      32       37   65  0.28      0      PCT       17     BW5  -0.83 286      32       37   65  0.13      0      PCT       10     BW5   0.07 287      32       119  67  0.46      0      PCT       21     09C   0.15 288      32       141  69  0.39      0      PCT       16     BW5  -0.77 289      32       141  69  0.24      0      PCT       11     BW5   0.97 290      32       141  69  0.39      0      PCT       16     BW7   0.75 291      32       77   71  0.37      0      PCT       19     BW4   0.73 292      32       77   71  0.42      0      PCT       20     BW5   0.74 293      32       77   71  0.3       0      PCT       17     BW6   0.77 294      32       139  71  0.41      0      PCT       17     BW2  -0.81 295      32       92   72  0.26      0      PCT       14     BW3   0.78 296      32       92   72  0.37      0      PCT       17     BW5  -0.78 297      32       102  72  0.09      0      PCT        6     BW9   1.84 298      32       130  72  0.18      0      PCT       12     04H   0.86 299      32       141  73  0.2       0      PCT       10     05H  -0.12 300      32       141  73  0.18      0      PCT        9     BW1  -1.99 301      32       135  75  0.19      0      PCT       10     BW2  -0.68

Attachment 2 to                      Table D-4 W3F1-2011-0072           SG32 Service Induced Indications Page 19 of 28                 Wear at Supports - RF17 Count     SG      ROW  COL VOLTS    DEG       IND     PER    LOCN INCH1 302      32       141  75  0.4       0      PCT       17     BW1   1.77 303      32       67   77  0.26      0      PCT       17     BW9  -1.07 304      32       143  77  0.36      0      PCT       15     BW2  -0.72 305      32       110  78  0.38      0      PCT       18     BW6  -0.73 306      32       81   79  0.21      0      PCT       13     BW4  -0.63 307      32       81   79  0.44      0      PCT       20     BW4   0.91 308      32       112  80  0.23      0      PCT       14     BW3  -0.84 309      32       112  80  0.12      0      PCT        8     BW3   0.93 310      32       105  83  0.29      0      PCT       16     08C   0.83 311      32       143  83  0.16      0      PCT        8     BW8   0.87 312      32       108  86  0.28      0      PCT       16     09C  -0.82 313      32       128  86  0.21      0      PCT       13     09C   0.84 314      32       71   87  0.22      0      PCT       15     BW9   0.94 315      32       83   87  0.27      0      PCT       16     BW9  -1.57 316      32       143  87  0.17      0      PCT        9     09H   0.78 317      32       105  89  0.42      0      PCT       19     BW5   0.84 318      32       117  89  0.23      0      PCT       13     BW4   -0.8 319      32       143  89  0.28      0      PCT       17     09H   0.86 320      32       145  89  0.32      0      PCT       18     BW4  -0.83 321      32       145  89  0.47      0      PCT       23     BW7  -0.72 322      32       145  89  0.11      0      PCT        9     BW7  -0.03 323      32       145  89  0.86      0      PCT       31     BW8  -0.84 324      32       145  89  0.65      0      PCT       27     BW8   0.69 325      32       145  89  0.34      0      PCT       19     08C  -1.01 326      32       145  89  0.41      0      PCT       21     08C   0.79 327      32       67   91  0.05      0      PCT        5     BW9   3.43 328      32       81   91  0.29      0      PCT       17     BW4   0.78 329      32       81   91  0.2       0      PCT       13     BW5   0.84 330      32       81   91  0.3       0      PCT       17     BW6  -0.69 331      32       111  91  0.34      0      PCT       19     08C   0.69 332      32       119  91  0.54      0      PCT       24     08C  -0.99 333      32       66   92  0.1       0      PCT        6     BW9  -1.47 334      32       66   92  0.05      0      PCT        3     BW9   0.23 335      32       144  92  0.23      0      PCT       14     08C   0.71 336      32       65   93  0.06      0      PCT        5     BW9   3.77 337      32       69   93  0.09      0      PCT        6     BW9  -0.28 338      32       81   93  0.31      0      PCT       16     BW4  -0.73 339      32       81   93  0.31      0      PCT       16     BW4   0.88 340      32       83   93  0.27      0      PCT       14     04H   0.87 341      32       64   94  0.14      0      PCT        8     BW9   3.46 342      32       68   94  0.22      0      PCT       11     BW9   3.85 343      32       76   94  0.38      0      PCT       18     08C  -0.87 344      32       98   94  0.22      0      PCT       14     BW9   2.95

Attachment 2 to                      Table D-4 W3F1-2011-0072           SG32 Service Induced Indications Page 20 of 28                 Wear at Supports - RF17 Count     SG      ROW  COL VOLTS    DEG       IND     PER    LOCN INCH1 345      32       79   95  0.23      0      PCT       15     BW4  -0.64 346      32       79   95  0.22      0      PCT       14     BW4   0.92 347      32       145  95  0.7       0      PCT       24     BW8  -0.71 348      32       145  95  0.28      0      PCT       13     BW8   0.93 349      32       64   96  0.16      0      PCT        9     BW9   3.77 350      32       66   96  0.47      0      PCT       19     BW1   1.85 351      32       68   96  0.15      0      PCT        8     BW9   0.48 352      32       67   97  0.31      0      PCT       17     02H  -0.86 353      32       67   97  0.09      0      PCT        7     BW9   3.98 354      32       81   97  0.16      0      PCT       10     BW4   0.27 355      32       81   97  0.63      0      PCT       24     BW4   0.85 356      32       81   97  0.18      0      PCT       11     BW5  -0.76 357      32       81   97  0.84      0      PCT       28     BW5   0.95 358      32       81   97  0.25      0      PCT       14     BW6  -0.82 359      32       81   97  0.16      0      PCT       10     BW9  -0.34 360      32       68   98  0.04      0      PCT        3     BW9  -0.07 361      32       72   98  0.32      0      PCT       16     BW9   0.12 362      32       79   99  0.49      0      PCT       23     BW4  -0.71 363      32       79   99  0.2       0      PCT       13     BW5  -0.27 364      32       79   99  0.16      0      PCT       11     BW5   0.9 365      32       68  100  0.05      0      PCT        3     BW9   1.98 366      32       144 100  0.24      0      PCT       15     BW9  -1.96 367      32       125 101  0.11      0      PCT        8     02H   0.48 368      32       68  102  0.36      0      PCT       16     BW9   1.97 369      32       143 103  0.44      0      PCT       18     BW9  -1.81 370      32       114 106  0.34      0      PCT       17     BW4  -0.25 371      32       77  107  0.29      0      PCT       15     BW4  -0.86 372      32       77  107  0.52      0      PCT       22     BW5  -0.68 373      32       77  107  1.33      0      PCT       35     BW5   0.13 374      32       77  107  1.48      0      PCT       37     BW5     1 375      32       77  107  0.51      0      PCT       22     BW6  -0.75 376      32       77  107  0.72      0      PCT       26     BW6  -0.12 377      32       83  107  0.37      0      PCT       18     BW3  -1.06 378      32       119 107  0.33      0      PCT       17     08C    -1 379      32       92  108  0.28      0      PCT       16     06C  -0.77 380      32       77  109  0.61      0      PCT       26     BW6   0.84 381      32       113 109  0.7       0      PCT       27     BW3   0.9 382      32       115 109  0.15      0      PCT       10     BW8  -0.96 383      32       115 109  0.24      0      PCT       14     BW8   0.98 384      32       50  110  2.18      0      PCT       42     BW5  -0.93 385      32       50  110  0.27      0      PCT       13     BW5   0.96 386      32       82  110  0.25      0      PCT       14     BW5   -0.8 387      32       82  110  0.22      0      PCT       13     BW6   0.7

Attachment 2 to                      Table D-4 W3F1-2011-0072           SG32 Service Induced Indications Page 21 of 28                 Wear at Supports - RF17 Count     SG      ROW  COL VOLTS    DEG       IND     PER    LOCN INCH1 388      32       37  111  0.43      0      PCT       21     BW5   1.06 389      32       41  111  1.47      0      PCT       38     BW5   0.79 390      32       99  111  0.34      0      PCT       18     BW3   0.52 391      32       32  112  0.12      0      PCT        7     BW5  -0.75 392      32       32  112  0.41      0      PCT       17     BW5   0.89 393      32       36  112  0.19      0      PCT       10     BW5  -0.81 394      32       38  112  0.35      0      PCT       16     05C  -0.98 395      32       42  112  0.3       0      PCT       14     BW5  -0.74 396      32       42  112  0.31      0      PCT       14     BW5   0.03 397      32       42  112  0.25      0      PCT       12     BW5   0.66 398      32       76  112  0.2       0      PCT       13     03H  -0.77 399      32       82  112  0.18      0      PCT       12     BW6   0.86 400      32       100 112  0.33      0      PCT       17     08C   0.47 401      32       114 112  0.31      0      PCT       16     BW3   0.87 402      32       81  113  0.69      0      PCT       26     BW4   0.81 403      32       135 113  0.65      0      PCT       23     BW8   0.09 404      32       98  114  0.32      0      PCT       16     08C   0.61 405      32       25  115  0.16      0      PCT        9     BW5  -0.89 406      32       123 115  0.27      0      PCT       15     08C  -1.16 407      32       123 115  0.17      0      PCT       11     08C   0.73 408      32       127 115  0.29      0      PCT       13     08C  -0.31 409      32       40  116  0.41      0      PCT       17     BW5   1.04 410      32       46  116  0.77      0      PCT       26     BW5   1.07 411      32       106 116  0.32      0      PCT       16     BW7   -0.6 412      32       19  117  0.75      0      PCT       28     BW5  -0.96 413      32       29  117  0.38      0      PCT       20     06C   0.71 414      32       77  117  0.45      0      PCT       21     BW4   0.96 415      32       77  117  1.2       0      PCT       35     BW6  -0.49 416      32       77  117  0.69      0      PCT       26     BW6   0.83 417      32       133 117  0.46      0      PCT       18     BW3   1.02 418      32       135 117  0.37      0      PCT       16     01C   0.68 419      32       74  118  0.79      0      PCT       29     BW4  -0.89 420      32       74  118  1.14      0      PCT       34     BW5  -0.77 421      32       74  118  0.26      0      PCT       16     BW6  -0.82 422      32       74  118  0.39      0      PCT       20     BW6   0.7 423      32        2  122  0.24      0      PCT       10     01C   0.86 424      32       40  122  0.32      0      PCT       17     BW5  -0.79 425      32       40  122  0.27      0      PCT       15     BW5   0.89 426      32       104 122  0.37      0      PCT       22     BW3  -0.86 427      32       113 123  0.39      0      PCT       23     BW3   0.84 428      32       37  125  0.29      0      PCT       15     BW5   -0.9 429      32       81  125  0.23      0      PCT       13     BW4   0.83 430      32       127 125  0.27      0      PCT       13     06C  -0.83

Attachment 2 to                      Table D-4 W3F1-2011-0072           SG32 Service Induced Indications Page 22 of 28                 Wear at Supports - RF17 Count     SG      ROW  COL VOLTS    DEG       IND     PER    LOCN INCH1 431      32       133 125  0.5       0      PCT       23     04C   1.08 432      32       133 125  0.27      0      PCT       16     02C   1.08 433      32        2  126  0.4       0      PCT       14     05C  -0.88 434      32       41  127  0.43      0      PCT       20     BW5   0.94 435      32       131 127  0.34      0      PCT       19     BW1   1.65 436      32       22  128  0.23      0      PCT       12     02H   0.72 437      32       82  128  0.21      0      PCT       12     BW5   -0.7 438      32       82  128  0.8       0      PCT       27     BW5   0.74 439      32       82  128  0.47      0      PCT       20     BW6   0.85 440      32       43  129  0.25      0      PCT       13     BW5  -0.97 441      32       43  129  0.26      0      PCT       14     BW5   0.83 442      32       81  129  0.27      0      PCT       14     08H  -0.73 443      32       83  131  0.36      0      PCT       19     BW7   0.95 444      32       125 131  0.35      0      PCT       19     02C   0.79 445      32       126 132  0.22      0      PCT       14     10H  -1.04 446      32       126 132  0.32      0      PCT       18     02C   -0.8 447      32       111 133  0.3       0      PCT       14     BW3   0.75 448      32       123 133  0.27      0      PCT       13     03C   0.83 449      32       125 133  0.26      0      PCT       16     BW4  -0.89 450      32       100 134  0.22      0      PCT       11     07C  -0.06 451      32        1  135  0.29      0      PCT       17     04C    0.8 452      32       92  136  0.35      0      PCT       17     BW4   -0.8 453      32       92  136  0.38      0      PCT       18     07C    0.8 454      32       109 137  0.55      0      PCT       24     08C    0.8 455      32       41  139  0.47      0      PCT       22     BW5    0.9 456      32       79  139  0.44      0      PCT       21     08C  -0.25 457      32       79  139  0.13      0      PCT       10     08C   0.74 458      32       80  140  0.37      0      PCT       18     BW9   1.63 459      32       84  140  0.24      0      PCT       13     BW9  -1.99 460      32       23  141  0.26      0      PCT       15     03H   0.85 461      32       37  141  0.35      0      PCT       18     BW5  -0.82 462      32       81  141  0.3       0      PCT       16     08C  -0.28 463      32       109 141  0.34      0      PCT       18     BW5   0.96 464      32       50  142  0.43      0      PCT       20     BW5  -0.79 465      32       66  142  0.34      0      PCT       18     08C   0.85 466      32       106 142  0.25      0      PCT       15     09H   0.79 467      32       75  143  0.24      0      PCT       14     04C  -0.12 468      32       105 143  0.62      0      PCT       26     09H  -0.77 469      32       105 143  0.25      0      PCT       16     09H   0.13 470      32       105 143  0.45      0      PCT       22     BW3   0.89 471      32       105 143  0.33      0      PCT       18     BW6  -0.67 472      32       113 143  0.27      0      PCT       16     04C  -1.05 473      32        2  144  0.22      0      PCT       11     05C  -0.44

Attachment 2 to                      Table D-4 W3F1-2011-0072           SG32 Service Induced Indications Page 23 of 28                 Wear at Supports - RF17 Count     SG      ROW  COL VOLTS    DEG       IND     PER    LOCN INCH1 474      32       96  144  0.42      0      PCT       21     08C  -1.11 475      32       104 144  0.25      0      PCT       16     04H   0.66 476      32       45  145  1.05      0      PCT       32     BW5  -1.02 477      32       45  145  0.63      0      PCT       25     BW5   0.67 478      32       81  145  0.3       0      PCT       15     08H  -0.83 479      32       109 145  0.28      0      PCT       16     09H   0.89 480      32       84  146  0.22      0      PCT       14     BW9  -1.58 481      32       108 146  0.23      0      PCT       14     08C  -0.87 482      32       47  147  0.39      0      PCT       19     BW5  -0.87 483      32       47  147  0.53      0      PCT       25     BW5     1 484      32       91  147  0.34      0      PCT       18     09C  -0.87 485      32       103 147  0.36      0      PCT       20     09C   -1.1 486      32       82  148  0.35      0      PCT       17     BW4  -0.93 487      32       41  149  1.77      0      PCT       39     BW5     1 488      32       43  149  0.51      0      PCT       23     BW5   0.78 489      32       49  149  0.13      0      PCT        9     BW5  -0.45 490      32       49  149  0.9       0      PCT       30     BW5   0.96 491      32       101 149  0.54      0      PCT       24     09C  -1.13 492      32       101 149  0.62      0      PCT       23     09C   0.78 493      32       103 149  0.37      0      PCT       20     02H   0.74 494      32       103 149  0.93      0      PCT       32     09H  -0.18 495      32       103 149  0.27      0      PCT       17     09H   0.98 496      32       80  150  0.23      0      PCT       14     08H   0.92 497      32       82  150  0.42      0      PCT       20     BW9   1.71 498      32       41  151  0.28      0      PCT       15     BW5   0.22 499      32       43  151  0.42      0      PCT       19     BW5   0.71 500      32       75  151  0.24      0      PCT       12     05C  -0.28 501      32       84  152  0.19      0      PCT       14     BW9  -1.85 502      32       96  152  0.27      0      PCT       14     09H  -0.95 503      32       96  152  0.17      0      PCT        9     09H  -0.12 504      32       40  154  0.61      0      PCT       24     BW5   0.69 505      32       37  155  0.59      0      PCT       23     BW5  -0.82 506      32       41  155  0.2       0      PCT       12     BW5   0.98 507      32       66  156  0.34      0      PCT       16     08C  -0.31 508      32       37  157  0.47      0      PCT       21     BW5  -0.68 509      32       37  157  0.27      0      PCT       15     BW5   0.98 510      32       55  157  0.24      0      PCT       14     08C   0.86 511      32       85  157  0.34      0      PCT       19     09C  -1.06 512      32       38  158  0.34      0      PCT       17     BW5   0.98 513      32       86  158  0.54      0      PCT       21     BW9   1.57 514      32       86  158  0.13      0      PCT        7     09C  -0.15 515      32       86  158  0.25      0      PCT       12     09C   0.79 516      32       59  159  0.26      0      PCT       14     06C   0.92

Attachment 2 to                     Table D-4 W3F1-2011-0072          SG32 Service Induced Indications Page 24 of 28                Wear at Supports - RF17 Count     SG      ROW COL VOLTS    DEG       IND     PER    LOCN INCH1 517      32       79 159  0.46      0      PCT       22     BW9   1.79 518      32       83 159  1.22      0      PCT       35     BW9   1.94 519      32       24 160  0.32      0      PCT       17     03H   0.76 520      32       70 160  0.2       0      PCT       11     08C   -0.9 521      32       70 160  0.58      0      PCT       22     08C   0.76 522      32       78 160  0.58      0      PCT       22     BW9   1.42 523      32       80 160  0.88      0      PCT       31     BW9   1.81 524      32        1 161  0.22      0      PCT       11     07C   0.06 525      32       76 162  0.22      0      PCT       11     BW1  -1.69 526      32       76 162  0.45      0      PCT       19     BW9   1.42 527      32       14 164  0.41      0      PCT       17     04C  -0.41 528      32       61 165  0.26      0      PCT       13     06C   0.65 529      32       41 167  0.44      0      PCT       19     BW5     1 530      32       45 167  0.65      0      PCT       24     BW5  -0.65 531      32       14 168  0.16      0      PCT        9     03H   0.89 532      32       49 169  0.1       0      PCT        6     07H  -1.03 533      32       49 169  0.29      0      PCT       14     07H   0.82 534      32       53 169  0.35      0      PCT       16     01C   0.03 535      32       34 170  0.41      0      PCT       18     BW5   0.96 536      32       18 174  0.41      0      PCT       20     02C  -0.78 537      32       20 174  0.24      0      PCT       12     BW5   -0.9 538      32        1 175  0.41      0      PCT       12     01H  -0.03 539      32        3 175  0.2       0      PCT        6     01H  -0.88 540      32       11 175  0.76      0      PCT       28     BW1   1.89 to                      Table D-5 W3F1-2011-0072            SG31 Service Induced Indications Page 25 of 28                   Historical Volumetric Count SG   ROW COL VOLTS DEG  IND   PER    LOCN  INCH1  CRLEN  CRWID CEG 1   31     2 156  0.23 115 VOL     27     TSC    0.68   0.19  0.47  72 to                   Table E-2 W3F1-2011-0072          SG31 Plugging List - RF17 Page 26 of 28 Count     SG   Row Col       Reason 1       31   64  10 Administrative - CUD 2       31   10  12    Egg-Crate SAI 3       31   27  19     Batwing SAI 4       31   31  31    Egg-Crate SAI 5       31   46  32    Egg-Crate SAI 6       31   88  32    Egg-Crate SAI 7       31   31  35    Egg-Crate SAI 8       31   42  36    Egg-Crate SAI 9       31   27  37    Egg-Crate SAI 10       31  119  37  Freespan Ding SAI 11       31   25  47    Freespan SAI 12       31   50  48    Egg-Crate SAI 13       31   50  50    Egg-Crate SAI 14       31   95  55    Freespan SAI 15       31   35  57    Egg-Crate SAI 16       31   30  58    Egg-Crate SAI 17       31   38  58    Egg-Crate SAI 18       31   40  58    Egg-Crate SAI 19       31   59  61    Egg-Crate SAI 20       31   44  64    Tubesheet SAI 21       31   40  66    Egg-Crate SAI 22       31   72  72    Egg-Crate SAI 23       31   71  73    Egg-Crate SAI 24       31   75  73    Egg-Crate SAI 25       31   59  77    Egg-Crate SAI 26       31   74  88     Batwing SAI 27       31   86  88    Egg-Crate SAI 28       31   58  94    Egg-Crate SAI 29       31   76  98    Tubesheet SCI 30       31   75 101    Egg-Crate SAI 31       31   68 102    Tubesheet SCI 32       31   82 104    Egg-Crate SAI 33       31   86 106    Tubesheet SCI 34       31  108 108    Egg-Crate SAI 35       31   47 113    Tubesheet SAI 36       31   49 113    Tubesheet SAI 37       31   18 114    Tubesheet SAI 38       31   14 116    Egg-Crate SAI 39       31   16 116    Tubesheet SAI 40       31  116 116    Freespan SAI 41       31   21 117    Egg-Crate SAI 42       31   26 118    Tubesheet SAI 43       31   19 119    Egg-Crate SAI 44       31   21 119    Egg-Crate SAI 45       31   24 120    Egg-Crate SAI 46       31   77 123    Egg-Crate SAI to                  Table E-2 W3F1-2011-0072          SG31 Plugging List - RF17 Page 27 of 28 Count     SG   Row Col      Reason 47       31   2  124   Egg-Crate SAI 48       31   48 124   Egg-Crate SAI 49       31   9  125   Freespan SAI 50       31   51 131   Egg-Crate SAI 51       31   16 140   Egg-Crate SAI 52       31   9  143   Egg-Crate SAI 53       31   31 143   Egg-Crate SAI 54       31   34 144   Tubesheet SAI 55       31   21 147   Egg-Crate SAI 56       31  101 147   Egg-Crate SAI 57       31   36 152   Egg-Crate SAI 58       31   29 159   Egg-Crate SAI 59       31   8  160   Egg-Crate SAI 60       31   10 162   Egg-Crate SAI 61       31   54 164    Batwing SAI to                  Table E-3 W3F1-2011-0072          SG32 Plugging List - RF17 Page 28 of 28 Count     SG   Row Col      Reason 1       32   7   35  Egg-Crate SAI 2       32   89  35  Egg-Crate SAI 3       32   92  36    Batwing SAI 4       32   27  37  Egg-Crate SAI 5       32   28  50  Egg-Crate SAI 6       32   93  57  Egg-Crate SAI 7       32   82  64   Support Wear 8       32   76  76  Egg-Crate SAI 9       32   68  94  Egg-Crate SAI 10       32   98  98   Freespan SAI 11       32   64 102  Egg-Crate SAI 12       32   50 110   Support Wear 13       32   39 111  Tubesheet SAI 14       32   71 111  Tubesheet SAI 15       32   54 114  Tubesheet SAI 16       32   39 115  Tubesheet SAI 17       32   12 116  Egg-Crate SAI 18       32   42 120  Tubesheet SCI 19       32   55 123  Egg-Crate SAI 20       32  101 127  Egg-Crate SAI 21       32   11 131  Egg-Crate SAI 22       32   92 132  Egg-Crate SAI 23       32   7  137  Egg-Crate SAI 24       32   20 152  Egg-Crate SAI 25       32   22 152  Egg-Crate SAI}}