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

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Day Steam Generator Tube Inspection Report for the 17th Refueling Outage
ML113080090
Person / Time
Site: Waterford Entergy icon.png
Issue date: 11/03/2011
From: Steelman W
Entergy Nuclear South, Entergy Operations
To:
Office of Nuclear Reactor Regulation, Document Control Desk
References
W3F1-2011-0072
Download: ML113080090 (51)
v • d • e


Text

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 ft² of heat transfer area. The U-tubes are 3/4 O.D. by 0.048 nominal wall thickness explosively expanded the full depth of the 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 45º 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

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