CP-201700805, Sixteenth Refueling Outage (2RF16) Steam Generator 180 Day Report

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Sixteenth Refueling Outage (2RF16) Steam Generator 180 Day Report
ML17313A447
Person / Time
Site: Comanche Peak Luminant icon.png
Issue date: 10/30/2017
From: Hope T
Vistra Energy
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
CP-201700805, TXX-17083
Download: ML17313A447 (32)
v • d • e


Text

ENERGY G!J!j/ I Lum~ant Timothy A. Hope Manager, Regulatory Affairs Luminant P.O. Box 1002 6322 North FM 56 Glen Rose, TX 76043 0 254.897.6370 m 817.360.6882 CP-201700805 TXX-17083 ATIN: Document Co ntro l Desk Ref 10 CFR 810 U.S. Nuclear Regulatory Commission Washington, DC 20555 -0001 10/30/2017

SUBJECT:

COMANCHE PEAK NUCLEAR POWER PLANT DOCKET NO . 50-446 UNIT 2 SIXTEENTH REFUELING OUTAGE (2RF16) STEAM GENERATOR 180 DAY REPORT

Dear Sir or Madam :

By means of the attachment to this letter, Vistra Operations Company LLC {Vistra OpCo) submits the Comanche Peak Nuclear Power Plant {CPNPP) Unit 2 steam generator tube inspection report for 2RF16 as required by Technical Specification 5.6.9.

This communication contains no new licensing basis commitments regarding Comanche Peak Unit 2.

If you have any questions regarding this submittal, please contact Jim Barnette at (254) 897-5866 or James.barnette@ luminant.com.

Sincerely, Attachment - Comanche Peak Nuclear Power Plant 2RF16 Steam Generator 180 Day Report 1601 BRYAN STREET DALLAS, TEXAS 75201 0 214- 812-4600 VISTRAENERGY.COM

TXX- 17083 Page 2 of 2 c - Kriss Kennedy, Region IV Marga ret M . W atford, NRR Res ident Inspectors, Comanche Peak

Attachment to TXX-17083 Comanche Peak Nuclear Power Plant 2RF16 Steam Generator 180 Day Report CPNPP This report is being submitted pursuant to TS 5.6.9, "Steam Generator Tube Inspection Report," to provide the results of the most recent CPNPP Unit 2 Steam Generator inservice inspection.

Cover Page

Attachment to TXX-17083 Steam Generator Configuration The Comanche Peak Nuclear Power Plant (CPNPP) Unit 2 Nuclear Steam Supply System (NSSS) has four Westinghouse Model 05 Steam Generators (SG) each with 4570 thermally treated Alloy 600 U-tubes. Each U-tube has a nominal outside diameter (OD) of 0.750 inch, a nominal tube wall thickness of 0.043 inch , and a straight length ranging from 303 .73 inches (Row 1) to 305.49 inches (Row 49), based on the tube schedule drawing . The tubesheet is 21.23 inches thick with a full depth hydraulic expansion of the tubes in both the hot leg (HL) and the cold leg (CL) . Approximately one inch of the tube at both ends was tack expanded prior to tube-end welding. On the hot leg side , the U-tubes are supported by seven (7) tube support plates (TSPs). A flow distribution baffle (FOB) plate located between the tubesheet and the first TSP helps distribute the secon dary side flow over the tubesheet. On the cold leg side there are four (4) TSPs , six (6) preheater baffle plates and the FOB. The FOB and the lowest five preheater baffle plates are 0.75-inch-thick whereas the TSPs and the top preheater baffle plate are 1.12 inches thick. The FOB and the preheater baffle plates have round drilled holes whereas the TSPs have concave quatrefoil holes. All plates are made of Type 405 stainless steel. In the U-bend , the tubes are supported by two (2) sets of chrome-plated lnconel anti-vibration bars (AVBs) . Figure 3A shows schematic of the Model 05 SG and Figure 3B shows the general location of the tube support plates and the baffle plates and the terminology used in the eddy current inspection designated plates. To reduce tube vibration ,

140 tubes in each SG were hydraulically expanded at the Band D preheater baffle plates.

This field modification was performed before the initial startup of CPNPP Unit 2.

Inspection Summary The inservice inspection of the Unit 2 SGs was completed during the Unit 2 Refueling Outage 16 (2RF16) . CPNPP Unit 2 entry into MODE 4 after the inspection was achieved on May 3, 2017 .

The last inspection of these SGs, prior to 2RF16 , was conducted at 2RF14 when the accumulated operating life was 18.71 effective full power years (EFPY) . During the 2RF15 outage and since CPNPP Unit 2 is allowed to skip inspections, neither primary side nor secondary side inspection of the SGs was performed. CPNPP Unit 2 implemented a Stretch Power Uprate of 4.5% of the original power rating at the beginning of Cycle 12 in the fall of 2009 . The uprate changed the core therma l power from 3458 MWt (101 .5% condition) to 3612 MWt. The cumulative operating experience at the current (2RF16) inspection is 21.51 EFPY.

The next cycle is planned to be 1.45 EFPY (Cycle 17).

The primary side inspection of the Comanche Peak Unit 2 SGs for 2RF16 consisted of base scope eddy current testing of at least a 50% sample population for all existing and potential degradation mechanisms using bobbin and +POINT' probes, as applicable, and bobbin inspection of all prior indications . Permanent alternate repair criteria eliminated the need for inspecting the bottom seven-inch length of tubing at the tube-end. Secondary side activities included sludge lancing and foreign object search and retrieval (FOSAR) .

Page 1 of 29

Attachment to TXX-17083 The base scope inspec,tion program was completed as planned . As a result of finding circumferential primary water stress corrosion cracking (PWSCC) indications, +POINT probe inspection in all four (4) steam generators was expanded . The expansion involved an increase in the number of tubes inspected with the +POINT probe on the hot leg (HL) top of the tubesheet (TTS). It resulted in a total of 84% in SG 2-01, 79% in SG 2-02, 100% in SG 2-03 ,

and 85% in SG 2-04. This was done to meet and exceed the requirements of both the Electric Power Research Institute (EPRI) Steam Generator Examination Guidelines and the EPRI Steam Generator Integrity Assessment Guidelines.

Three (3) tubes were stabilized and plugged due to the circumferential PWSCC indications in SG 2-03. The following list is the current form of existing degradation mechanisms through 2RF16:

  • Tube wear at Anti-Vibration Bars (AVB)
  • Tube wear at preheater baffle plates
  • Tube wear at quatrefoil tube support plates
  • Tube wear due to loose parts
  • Circumferential PWSCC at BLG/OXP locations within the HL tubesheet
  • Circumferential PWSCC at HL Tubesheet Expansion Transition Structural and leakage performance criteria were satisfied based on the inspection results .

Hence , the condition monitoring requirements are satisfied . There was no primary-to-secondary operating leakage during the preceding inspection interval. An operational assessment of the current inspection results shows that the structural and leakage integrity will be satisfied for the next cycle and that it is acceptable to continue operation until the next planned inspection in October 2018 (2RF17).

Section 1 of this report describes the scope of inspections performed , including the nondestructive examination techniques utilized for each degradation mechanism and the scope expansion .

Section 2 contains the inspection results , which include:

a. Degradation mechanisms found ,
b. Number of tubes plugged during the inspection outage for each degradation mechanism,
c. Number and percentage of tubes plugged to date,
d. The results of condition monitoring, including the results of tube pulls and in-situ testing ,
e. The primary to secondary leakage rate observed ,
f. The results of monitoring for slippage.

Section 3 contains the location , orientation (if linear) , and measured sizes (if available) of service induced indications .

Page 2 of 29

Attachment to TXX-17083 Section 1: Scope and Examination Techniques of Inspections Performed The actual inspections performed during 2RF16 met or exceeded both the Technical Specification minimum requirements and the requirements of the Electric Power Research Institute (EPRI) Pressurized Water Reactor (PWR) Steam Generator Examination Guidelines.

The following primary side inspections were performed in all four SGs (unless specified):

  • 50% Bobbin full length inspection of tubes in all four (4) SGs (straight legs only in Rows 1 and 2)
  • 100% Bobbin inspection of tubes identified as potentially having high residual stress
  • 100% Bobbin inspection of all prior indications of degradation and/or historical Possible Loose Parts (PLPs)
  • 100% Bobbin inspection of all prior indications with %TW calls located at AVBs ,

Preheater Baffle Plates (PBP), and Flow Distribution Baffle (FOB)

  • 50% +POINT probe inspection of HL TTS from +3.00 inches/-15.00 inches (H*

distance= 14.01 inches) , this 50% sample is from the remaining population of tubes after the peripheral, open lane and T-slot inspection .

  • +POINT probe inspection HL TTS +3.00 inches/-15.00 inches of 100% of the peripheral tubes, including the open lane and T-slot, 2 pitches into the bundle. Data acquisition shall continue as required to assure that the required distance below the tubesheet (15 .00 inches) is adequately covered .
  • +POINT probe inspection cold leg (CL) TTS +3 .00 inches/-3 .00 inches of 100% of the peripheral tubes , including the open lane and T-slot, 2 pitches into the bundle
  • +POINT probe inspection of all HL and CL TSP locations and HL and CL TTS +3 inches/-3 inches in the high residual stress tubes (-2 sigma tubes) in Table 5-5 in Reference 4 that are still in service
  • 50% +POINT probe inspection of the U-bends in Rows 1 and 2 (same tubes as in the bobbin program)
  • 50% +POINT probe inspection of all dents/dings> 5.0 volts on HL and U-bend
  • 50% +POINT probe inspection of all dents/dings> 2.0 volts at and below TSP C7.
  • 100% +POINT probe inspection of dents> 2.0 volts at TSP H3
  • 100% +POINT probe inspection of tubes expanded at Preheater Baffle Plate B (PBP-B)
  • 100% +POINT probe inspection of CL of Rows 21 to 49 on SG 2-02 and SG 2-03 at PBP-B
  • 50% +POINT probe inspection of tubes expanded at Preheater Baffle Plate 02
  • +POINT probe inspection of all legacy loose parts
  • +POINT probe inspection of all I-code bobbin indications that are not resolved after history review
  • 100% Video/visual inspection of plugs in HL and CL
  • Video scan of the entire channel head bowl in HL and CL Page 3 of 29

Attachment to TXX-17083

  • Secondary side video inspection included :
a. SG waterbox inspection in all four (4) SGs
b. FOSAR at the top of the tubesheet and over PBP-B
i. SG 2-01 and SG 2-04 PBP B high velocity region (CL of Rows 21 to 49 and higher) will be included to the base FOSAR scope .

ii. SG 2-01 FOSAR inspection of TSPs "L" and "P" The scope was expanded due to Circumferential PWSCC indications reported in SG 2-03 during 2RF16. This is a new degradation mechanism for the Comanche Peak Unit 2 SGs . This occurred in three (3) separate tubes in SG 2-03 (R1-C94, R48-C86 , and R5-C79) at or below the top of the tubesheet (TTS) . Therefore, in accordance with the EPRI Steam Generator Examination Guidelines and to support the SG tube integrity assessments, CPNPP Unit 2 completed the following expansions of the base inspection during 2RF16 :

  • 100% +POINT probe inspection of HL TTS from +3.00/-15.00 inches in SG 2-03
  • 100% +POINT probe inspection of all known BLG/OXP locations in SGs 2-01 , 2-02 and 2-04
  • +POINT probe inspection of HL TTS from +3.00/-15.00 inches for all tubes which have not been tested in either 2RF14 or 2RF16. This will achieve 100% coverage of +POINT probe inspection on the HL TTS in the last three (3) sequential outages for SGs 2-01 , 2-02 , and 2-04.

Although the one (1) ci rcumferential PWSCC indication was in a high residual stress tube (R5-C79) , the expansion was not limited to the high residual stress tube population , but to the general tube population. However, no additional expansion was required because the CPNPP Unit 2 base inspection scope included appropriate +POINT probe inspection of the susceptible regions of all high residual stress tubes .

Table 3E lists all tube indications from all SGs .

Page 4 of 29

Attachment to TXX-17083 Section 2: Inspection Results Degradation mechanisms found:

The Existing Degradation Mechanisms in the Unit 2 SGs were tube wear at AV8s , tube wear at non-expanded preheater baffle plates, tube wear due to loose parts and two new mechanisms that were listed as Potential , ci rcumferential PWSCC at 8LG/OXP locations with the HL tubesheet and circumferential PWSCC at HL tubesheet expansion transition. Table 28 provides a list of nondestructive examination (NOE) techniques utilized for each existing degradation mechanism .

Tube Wear at AV8s AV8 wear has been reported at Comanche Peak Unit 2 SGs in prior inspections. A number of AV8 wear indications were reported in each of the SGs during 2RF16 . Table 3A provides a summary of the AV8 wear indications in 2RF16 . No tubes were plugged due to AV8 wear during this outage. The maximum depth of all AV8 wear indications reported during 2RF16 was 39% Through Wall (TW) .

The condition monitoring limit for AV8 wear is 67% TW for a 0.5-inch flaw . The deepest indication reported was only 39% TW. Hence, the wear depths of the reported indications satisfy condition monitoring for burst strength . For pressure-only loading of volumetric flaws ,

satisfaction of the burst integrity at three (3) times the normal operating pressure differential (3.l1PNO) also satisfies the leakage integrity at accident conditions since the accident condition pressure differential for pop-through is much smaller than 3.l1PNO. Thus, primary-to-secondary leakage would not occur either at normal operation or at accident conditions . Therefore , the condition monitoring structural and leakage performance criteria are satisfied for the AV8 wear indications.

Tube Wear at Tube Support Plates Wear at preheater baffle plates has been observed at CPNPP Unit 2 in prior inspections.

These have been very few in number and had negligible growth rates . During 2RF12 and 2RF14 , two (2) baffle plate wear indications were reported , one (1) each in SGs 2-01 and 2-03 .

Wear indications at these same locations were reported in 2RF16 and had insignificant change in TW depths from prior outages. Additionally , in SG 2-04 at Tube R13-C92 , a preheater baffle plate indication was identified . From the historical look up, the tube showed in 2RF12 a volumetric indication with a depth of 7 %TW. Conservatively SG 2-04 Tube R13-C92 was analyzed for tube support wear and foreign object wear. The baffle plate wear indications reported during 2RF16 are summarized in Table 38 . The estimated depths of these indications (4% , 7% and 14%) were well below the repair limit of 40% TW.

In 2RF16, the first non-pre heater baffle plate wear, quatrefoil tube support plate wear, was reported . The estimated depth of this indication , 16%, was also well below the repair limit of 40% TW.

Page 5 of29

Attachment to TXX-17083 The condition monitoring limit for baffle plate wear is 51 % TW for a 1.2-inch flaw, based on

+POINT probe sizing using Examination Technique Specification Sheet (ETSS) 96910.1. Due to the uncertainties of SG 2-04 R13-C92 , the wear was analyzed with a 0.115 inch rotating pancake coil (RPC) probe and then sized with Examination Technique Specification Sheet (ETSS) 96911.1 . This ETSS is not included in Table 28, but was evaluated for use in Appendix H and I Equivalency document to support the 2RF16 outage.

Since the flaw depths are below the Condition Monitoring (CM) limit, tubes with such flaws meet condition monitoring for burst. For pressure-only loading of volumetric flaws, satisfaction of the burst integrity at 3.6.PNO also satisfies the leakage integrity at accident conditions since the accident condition pressure differential for pop-through is much smaller than 3.6.PNO.

Thus, the condition monitoring structural and leakage performance criteria are satisfied for the baffle plate wear indications .

Tube Wear Due to Loose Parts Several loose parts wear indications were reported in 2RF16 as shown in Table 3C . Some of them are preexisting wear indications due to loose parts wh ich were removed from the SGs in prior outages . Since the loose parts responsible for the wea r were removed , these indications were returned to service. All of these preexisting indications were inspected using +POINT probes.

From Table 3C , the maximum depth of loose parts wear (including those in tubes previously returned to service with this degradation) is 28% TW (SG 2-02 R6-C2) and the maximum axial extent (listed in the table in the column titled "Crlen ") is 0.29 inch (R26-C69) . The +POINT probe sizing data in Table 3C is based on ETSS 21998.1 .

For SG 2-04 R13-C92 , the wear was also analyzed with a RPC probe and then sized with ETSS 96911 .1. The CM limit for ETSS 96911.1 is 55% TW for wear length of 0.3 inch . This ETSS was not included in Table 28 , but evaluated for use in Appendix Hand I Equivalency document to support the 2RF16 outage. In Table 3C , SG 2-04 R13-C92 sizing data is based on ETSS 96911 .1.

The condition monitoring limit for a volumetric indication of 1.5-inch axial length is 49% TW based on +POINT probe inspection . The CM limit for a volumetric indication of 0.3-inch axial length is 55% TW based on RPC inspection. For pressure-only loading of volumetric flaws, satisfaction of the burst integrity at 3.6.PNO also satisfies the leakage integrity at accident conditions since the accident condition pressure differential for pop-through is much smaller than 3.6.PNO . Thus , the condition monitoring structural and leakage performance criteria are satisfied for the loose parts wear indications .

Circumferential PWSCC Indications Potential degradation mechanisms are those mechanical and corrosive processes that are judged to have the potential to occur based on industry experience and/or laboratory data. One of the potential degradation mechanisms listed in the 2RF16 DA was observed during the current outage . The potential degradation mechanism detected was circumferential PWSCC Page 6 of 29

Attachment to TXX-17083 indications. They were located either at the HL expansion transition or at a tubesheet bulge/overexpansion. SG 2-03 was the only affected SG with circumferential PWSCC . All three (3) tubes were plugged and stabilized , Table 30. The finding of this mechanism required a scope expansion as explained in Section 1.

The maximum depths of the indications with in the tubesheet ranged from 43% TW to 48% TW with circumferential extents of 31 degrees to 35 degrees. The percent degraded area (PDA) of these indications ranged from 4.1 to 4.2 using the simplistic method applying the maximum depth over the entire circumferential extent. These indications were associated with a preexisting bulge or overexpansion location . Tube R48-C86 contained a circumferential PWSCC indication at a top of tubesheet expansion transition. The indication was measured at 69% TW maximum depth and 60 degrees circumferential extent. The simple PDA is , therefore ,

11 .5.

It is noted that for indications within the tubesheet, tube burst is precluded due to the constraint of the hydraulically expanded tubesheet, however, leakage must be considered . For the largest flaw detected during 2RF16 (69% TW and 0.22-inch circumferential extent) , the ligament tearing pressure is 5209 psi, with all NOE, material and burst relation uncertainties included at 0.95 probability and 50% confidence level. This is well in excess of the limiting accident differential pressure of 2560 psi . Therefore , no leakage would be expected at accident conditions and the SG accident induced leakage performance criteria (AILPC) have also been satisfied . This also concluded that no in situ pressure testing was required .

No measureable primary-to-secondary leakage was identified during the current operating interval and, therefore , application of the H* leak rate factor. Therefore , condition monitoring requirements have been satisfied for the 2RF16 inspection for degradation associated with circumferential PWSCC indications.

Identification of Tubes Plugged :

A total of three (3) tubes were plugged during 2RF16, all three (3) in SG 2-03. The tubes identified for plugging were evaluated for the need for stabilization . Table 30 summarizes the list of tubes plugged and the cause of plugging. All three (3) tubes required plugging due to circumferential PWSCC indications . These three (3) tubes also required stabilization .

Total Number and percentage of tubes plugged to date :

The cumulative total number of tubes plugged in all SGs is 96, which is equal to 0.52% of the total number of tubes. Table 2A lists the Unit 2 SG tube plugging information.

Page 7 of29

Attachment to TXX-17083 Table 2A: Summary of All Plugged Tubes through 2 RF16 SG SG SG SG Total Percent Outage Date EFPY 2-01 2-02 2-03 2-04 Pre- Pre-0.000 5 3 3 9 20 0.11%

Service Service 2RF01 Nov-94 0.91 0 0 0 0 0 0 0.00%

2RF02 Mar-96 2.090 0 0 0 0 0 0.00%

2RF03 Nov-97 3.489 3 5 0 0 8 0.04%

2RF04 Apr-99 4.706 1 0 0 4 5 0.03%

2RF05 Oct-00 6.138 3 0 0 1 4 0.02%

2RF06 Apr-02 7.520 0 4 7 0 11 0.06%

2RF07 Oct-03 8.825 3 0 0 1 4 0.02%

2RF08 Apr-05 10.205 5 2 4 2 13 0.07%

2RF09 Oct-06 11 .639 No SG Inspection 0 0.00%

2RF10 Apr-08 13.044 1 7 3 2 13 0.07%

2RF11 Oct-09 14.502 No SG Inspection 0 0.00%

2RF12 Apr-11 15.910 0 2 1 0 3 0.02%

2RF13 Oct-12 17.329 No SG Inspection 0 0.00%

2RF14 Apr-14 18.709 2 10 0 0 12 0.07%

2RF15 Oct-15 20 .1 39 No SG Inspection 0 0.00%

2RF16 Apr-17 21 .509 0 0 3 0 3 0.02%

Total 23 33 21 19 96 0.53%

Percent 0.50% 0.72% 0.46% 0.42% 0.53%

Page 8 of 29

Attachment to TXX-17083 Ta bl e 28 NOE Examma f ion T ec hmques . for Exis. f ma an d Poten f 1a ID eara da1on f Mec hamsms Degradation Detection Detection Sizing Sizing Technique Location ETSS POD Mechan ism Probe Tvoe Tech niq ue ETSS P robe Type ETSS Existin2 De2radation Mec ha nisms Wear AVBs Bobbin 96004.3 Rev. 13 0.909 at 40% TW Bobbin 96004.3 Rev. 13 Bobbin 96004.3 Rev. 13 0.909 at 40% TW Bobbin 96004.3 Rev. 13 Wear TSPs, PBPs, & FDB

+Point 96910.1 Rev. IO 0.924 at 40% TW +Point 96910.1 Rev. IO Foreign Objects Bobbin 27091.2 Rev. 2 0.931 at 31 % TW +Point 21998.1Rev.4 Wear +Point (Object is Present) +Point 21998.1Rev.4 0.926 at 40% TW 96910.1Rev. 10 Foreign Objects Bobbin 27091.2 Rev. 2 0.931 at3 1%TW +Point 2 1998.1 Rev. 4 Wear +Po int (Object not Present) +Point 21998.1Rev.4 0.926 at 40% TW 96910.1Rev. 10 Potential Mecha nisms T2841 I Rev. 3 Bobbin 128413 Rev. 3 +Point 128431 Rev. 2 Axial ODSCC TSP See ETSS POD Curve

+Point 128424 Rev. 3 +Point 128432 Rev. 2 128425 Rev. 3 10013. l Rev. 1 0.861 at 60% TW 24013.l Rev. 2 0.875 at 60% TW Bobbin 128413 Rev. 3 See ETSS POD Curve +Point 128431 Rev. 2 Axial ODSCC Dings/Dents

+Point 128424 Rev. 3 See ETSS POD Curve +Point 128432 Rev. 2 128425 Rev. 3 See ETSS POD Curve 2240 I. I Rev. 4 0.901 at 53% TW

+Point 21410.I Rev. 6 Circ. ODSCC Dings/Dents +Point 21410 .1 Rev. 6 0.936 at 42% TW Note 5 128424 Rev. 3

  • A See ETSS POD Curve 128431 Rev. 2 - A Axial and Circ. +Point HL TTS +Point 128425 Rev. 3 - A See ETSS POD Curve 128432 Rev. 2 - A ODSCC +Point 21410.lRev.6-C 0.936 at 42% TW Note 5 - C 20511.1 Rev. 8-A 0.931 at 40% TW Axial and Circ. +Point 20511.1 Rev. 8 - A BLG/OXP in HL TIS +Point 20510.1 Rev. 7 - C 0.935 at 40% TW PWSCC +Point 20510.l Rev. 7 - C Il 1524 Rev. 0 - C See ETSS POD Curve 20511.1 Rev. 8 - A 0.931 at 40% TW Axial and Circ. HLTS +Point 20511.l Rev. 8 - A

+Point 20510.1 Rev. 7 - C 0.935 at 40% TW PWSCC Expansion Transition +Point 20510.1 Rev. 7 - C II 1524 Rev. 0 - C See ETSS POD Curve 20511.l Rev. 8 - A 0.931at40% TW Tube Expanded +Point 20511.1 Rev. 8 -A ODSCC/PWSCC +Point 20510.1 Rev. 7- C 0.935 at 40% TW atPBP +Point 20510.1 Rev. 7 - C Il 1524 Rev. 0 - C See ETSS POD Curve Axial and Circ. Row I & Row2 965.11.2 Rev. 16 - A 0.909 at 27% TW +Point 20511.1 Rev. 8 - A

+Point PWSCC U-bends 205 10. 1 Rev. 7 -C 0.935 at 40% TW +Point 20510.1 Rev. 7 - C Non-Relevant Mechanism Dia2nostic Insoection Axial and Circ. 20511.l Rev. 8 - A 0.931 at 40% TW +Point 20511.1 Rev. 8 - A HL Dents +Point PWSCC 20510.1 Rev. 7 - C 0.935 at 40% TW +Point 20510.1 Rev. 7 - C Page 9 of29

Attachment to TXX-17083 Results of Condition Monitoring (CM), including the results of tube pulls and in-situ testing :

Existing Degradation Mechanisms CM is a "backward looking" evaluation to determine if SG performance criteria were satisfied during the operating period prior to the shut down and inspection . The SG inspection results are used as the input for this assessment.

Existing degradation mechanisms are those tube degradation mechanisms that were present in these SGs as determined by SG inspections prior to 2RF16. They are as follows:

  • tube wear at AVBs ,
  • tube wear at non-expanded preheater baffle plates, and
  • tube wear due to foreign objects .

The following two Damage Mechanisms were listed as Potential in the 2RF16 Degradation Assessment. For 2RF17 they will be listed as Existing .

  • circumferential PWSCC at BLG/OXP locations with the HL tubesheet
  • circumferential PWSCC at HL tubesheet Expansion Transition Potential Degradation Mechanisms Potential degradation mechanisms are those mechanical and corrosive processes that have not been reported in prior inspections in the SGs but are judged to have a potential to occur in the current inspection period based on industry experience and/or laboratory data . Based on the assessment of industry experience and laboratory data , the following potential degradation mechanisms were identified for CPNPP 2RF16:
  • axial ODSCC at Tube Support Plate
  • axial and Circumferential ODSCC below Drill Hole Baffle Plate
  • axial and circumferential ODSCC at top of Hot Leg tubesheet
  • axial PWSCC at BLG/OXP locations within HL tubesheet
  • axial PWSCC at HL tubesheet expansion transition
  • axial and PWSCC at Row 1 and 2 U-bends
  • axial and ODSCC/PWSCC in tubes expanded at Preheater Baffles Page 10 of 29

Attachment to TXX-17083 Channel Head Indications During a SG channel head bowl scan , a discoloration was observed in the cladding of SG 2-01 and also in SG 2-02 . For the flaw in SG 2-0 1, an evaluation of this condition was performed in 2RF14, which showed that there is no detrimental impact on meeting the SG performance criteria (Figure 3C) . Due to the evidence of no change in 2RF16 (Figure 3D), the indication is bounded by the previous evaluation. The flaw in SG 2-02 (Figure 3E and 3F) has similar characteristics as the existing flaw in 2-01 . Therefore, it was also bounded by the existing evaluation performed in 2RF14 .

Secondary Side Integrity All secondary side inspection activities were completed. No anomalous conditions adverse to structural integrity were reported from the video inspection. The FOSAR operation was performed over the tubesheet and over Baffle Plate B. All of the PLP indications reported in the eddy current inspection over the tubesheet and Baffle Plate B were subjected to FOSAR with the exception of the areas of Baffle Plate B that are not accessible by FOSAR. Further, objects identified during the video inspection were retrieved where possible. Other objects that could not be retrieved were dispositioned by engineering and will be inspected in 2RF17.

During plant operation in Cycles 15 and 16, no primary-to-secondary leakage was detected based on N-16 monitors, condenser off gas monitors , or grab sample measurements. Further, none of the eddy current indications were significant enough to cause primary-to-secondary leakage (all indications had depths below the condition monitoring limit). Hence , leakage integrity was maintained during Cycles 15 and 16.

No In-Situ Pressure Testing was required.

In summary, each of the four (4) SGs met the performance criteria outlined in NEI 97-06, i.e .,

condition monitoring , during the last two (2) operating cycles , between the last inspection at 2RF14 and the current inspection at 2RF16 .

Primary to secondary leakage rate observed :

During plant operation in Cycles 15 and 16, no primary-to-secondary leakage was detected based on N-16 monitors, condenser off gas monitors , or grab sample measurements. Further, none of the eddy current indications were significant enough to cause primary-to-secondary leakage (all indications had depths below the condition monitoring limit). Hence , leakage integrity was maintained during Cycles 15 and 16.

Page 11 of29

Attachment to TXX-17083 Results of monitoring for slippage:

Slippage monitoring was performed using automated analysis of the eddy current data. The results were spot-checked by eddy current analysts. No slippage was detected in any of the tubes inspected.

Also , comparing the maximum AVB wear observed (39%) to the maximum predicted (41%) in the 2RF14 CMOA provides confirmation of the predictive methodology for AVB wear. Hence ,

these indications also satisfy the leakage criteria for CM.

Page 12 of29

Attachment to TXX-17083 Section 3: Indication Listing Tables 3A, 38, 3C , 30 and 3E summaries of indications for 2RF16 for the existing degradation mechanisms:

Table 3A: Summary of AVB Wear Indications in 2RF16 SG SG SG SG 2RF16 Outage AVB Information 2-01 2-02 2-03 2-04 Number of AVB Indications 186 46 63 36 Maximum Depth (% TW) 39 30 30 23 Number of "New" Indications 4 0 5 0 Number of> 20% TW "New Indications 0 0 0 0 Table 38: Summary of Tube Support Plate Wear Indications in 2RF16 Depth Elevation Support SG OUTAGE Row Col Volts Deg Location

(%TW) (in) Plate Type 2-01 2RF16 49 67 0.54 0 16 C7 0.41 Quatrefoil Preheater 2-01 2RF16 49 56 0.18 0 4 C5 -0.4 Baffle Pre heater 2-03 2RF16 45 55 0.33 0 7 C2 0.06 Baffle Page 13 of29

Attachment to TXX-17083 Table 3C: Summary of Loose Part Wear Ind ications in 2RF16 2RF14 2RF16 Depth SG OUTAGE Row Col Volts Ind Depth Cr Len CrWid Locn lnch1

(%TW)

(%TW) 2-01 1 2RF16 48 38 0.3 PCT 4 6 - - C2 0 2-02 1 2RF16 4 114 0.17 PCT 17 17 0.17 0.46 C4 0.42 2-02 1 2RF16 3 114 0.26 PCT 24 24 0.21 0.44 C4 0.4 2-02 1 2RF16 6 2 0.16 PCT 16 16 0.21 0.40 C1 0.87 2-02 1 2RF16 6 2 0.33 PCT 28 28 0.21 0.44 C1 0.49 2-02 1 2RF16 6 1 0.17 PCT 17 17 0.18 0.41 C1 0.51 2-03 2RF16 21 50 0.11 PCT NA 12 0.18 0.37 C2 0.66 2-04 2 2RF16 13 92 0.31 PCT 73 14 0.27 0.60 C6 0.49 2-04 1 2RF16 34 77 0.15 PCT 16 17 0.29 0.40 C2 0.53 2-04 1 2RF16 32 71 0.27 PCT 25 25 0.22 0.38 C2 0.64 2-04 1 2RF16 26 69 0.17 PCT 19 18 0.33 0.42 C2 1.29 Note 1: Legacy wear from prior outages.

Note 2: Sizing data based on ETSS 96911 .1.

Note 3: Depth of flaw based on 2011 (2RF12) inspection using ETSS 96911.1 in 2RF16.

Page 14 of29

Attachment to TXX-17083 Table 30: Summary of Tubes with Circumferential PWSCC Indications found in 2RF16 Elevation Axial Circ Circ Depth Indication from SG Row Col Volts Deg Extent Extent Extent PDA Location

{%TW) Type Top of

{in) {in) {deg)

TS (in) 2-03 5 79 0.71 18 48 0.29 0.20 31 4.1 SCI TS HL -1 .11 2-03 48 86 0.55 26 69 0.22 0.39 60 11 .5 SCI TS HL 0 2-03 1 94 0.92 18 46 0.26 0.21 32 4.1 SCI TS HL -2.03 2-03 1 94 0.80 14 43 0.22 0.23 35 4.2 SCI TS HL -2.02 Page 15 of29

Attachment to TXX-17083 Table 3E: Summary of All Tube Indications Outage SG Row Col Volts Deg Ind Per Crlen CrWid Ceg Chn Locn lnchl BegT EndT PDia PType Cal U2RF16 1 23 108 0.79 0 PCT 14 P2 AV2 0 CTE HTE 0.61 CBAFN 33 U2RF16 1 25 8 0.77 0 PCT 14 P2 AV3 -0.31 CTE HTE 0.61 CBAFN 5 U2RF16 1 27 105 0.71 0 PCT 12 P2 AV2 0.3 CTE HTE 0.61 CBAFN 31 U2RF16 1 28 104 0.78 0 PCT 14 P2 AVl 0.14 CTE HTE 0.61 CBAFN 33 U2RF16 1 28 104 0.69 0 PCT 13 P2 AV4 0.09 CTE HTE 0.61 CBAFN 33 U2RF16 1 28 105 1.22 0 PCT 18 P2 AV2 0.33 CTE HTE 0.61 CBAFN 31 U2RF16 1 30 11 0.88 0 PCT 12 P2 AVl 0 CTE HTE 0.61 CBAFN 7 U2RF16 1 30 11 1.67 0 PCT 20 P2 AV3 0.43 CTE HTE 0.61 CBAFN 7 U2RF16 1 30 12 1.89 0 PCT 25 P2 AV2 0.19 CTE HTE 0.61 CBAFN 5 U2RF16 1 30 104 0.61 0 PCT 12 P2 AVl -0.1 CTE HTE 0.61 CBAFN 33 U2RF16 1 31 11 0.63 0 PCT 9 P2 AVl 0.14 CTE HTE 0.61 CBAFN 7 U2RF16 1 31 11 0.83 0 PCT 11 P2 AV3 0.06 CTE HTE 0.61 CBAFN 7 U2RF16 1 31 11 0.5 0 PCT 7 P2 AV4 -0.38 CTE HTE 0.61 CBAFN 7 U2RF16 1 31 12 1.37 0 PCT 21 P2 AV3 -0.3 CTE HTE 0.61 CBAFN 5 U2RF16 1 31 97 1.16 0 PCT 17 P2 AV2 0.05 CTE HTE 0.61 CBAFN 31 U2RF16 1 31 103 0.49 0 PCT 10 P2 AVl 0 CTE HTE 0.61 CBAFN 33 U2RF16 1 31 103 1.4 0 PCT 21 P2 AV3 -0.11 CTE HTE 0.61 CBAFN 33 U2RF16 1 32 12 1.52 0 PCT 21 P2 AV2 -0.32 CTE HTE 0.61 CBAFN 5 U2RF16 1 32 90 1.08 0 PCT 17 P2 AV4 0.27 CTE HTE 0.61 CBAFN 33 U2RF16 1 32 99 0.77 0 PCT 12 P2 AV3 -0.27 CTE HTE 0.61 CBAFN 31 U2RF16 1 32 103 1.08 0 PCT 16 P2 AV2 0.3 CTE HTE 0.61 CBAFN 31 U2RF16 1 33 56 0.73 0 PCT 11 P2 AV3 0.11 CTE HTE 0.61 CBAFN 17 U2RF16 1 33 86 1.01 0 PCT 16 P2 AV2 -0.27 CTE HTE 0.61 CBAFN 29 U2RF16 1 33 86 0.67 0 PCT 12 P2 AV3 0.18 CTE HTE 0.61 CBAFN 29 U2RF16 1 33 97 0.84 0 PCT 13 P2 AVl -0.03 CTE HTE 0.61 CBAFN 31 U2RF16 1 33 100 0.46 0 PCT 10 P2 AVl 0.36 CTE HTE 0.61 CBAFN 33 U2RF16 1 33 100 0.91 0 PCT 15 P2 AV3 0.07 CTE HTE 0.61 CBAFN 33 U2RF16 1 33 102 1.04 0 PCT 17 P2 AVl 0.31 CTE HTE 0.61 CBAFN 33 U2RF16 1 33 102 2.36 0 PCT 28 P2 AV2 0.36 CTE HTE 0.61 CBAFN 33 U2RF16 1 33 103 1.1 0 PCT 16 P2 AVl -0.06 CTE HTE 0.61 CBAFN 31 U2RF16 1 33 103 1.29 0 PCT 18 P2 AV2 -0.19 CTE HTE 0.61 CBAFN 31 U2RF16 1 34 13 2.68 0 PCT 28 P2 AV2 -0.03 CTE HTE 0.61 CBAFN 7 U2RF16 1 34 14 0.94 0 PCT 16 P2 AV3 0.23 CTE HTE 0.61 CBAFN 5 U2RF16 1 34 36 0.76 0 PCT 10 P2 AV4 0.36 CTE HTE 0.61 CBAFN 9 U2RF16 1 34 100 0.59 0 PCT 11 P2 AVl 0.45 CTE HTE 0.61 CBAFN 33 U2RF16 1 34 100 0.62 0 PCT 12 P2 AV2 -0.11 CTE HTE 0.61 CBAFN 33 U2RF16 1 34 100 1.43 0 PCT 21 P2 AV3 0.09 CTE HTE 0.61 CBAFN 33 U2RF16 1 34 102 0.96 0 PCT 16 P2 AVl 0.3 CTE HTE 0.61 CBAFN 33 U2RF16 1 34 102 1.36 0 PCT 20 P2 AV2 0.28 CTE HTE 0.61 CBAFN 33 U2RF16 1 34 102 2. 07 0 PCT 26 P2 AV4 0.43 CTE HTE 0.61 CBAFN 33 Page 16 of29

Attachment to TXX-17083 U2RF16 1 35 14 0.45 0 PCT 10 P2 AV2 0.14 CTE HTE 0.61 CBAFN 5 U2RF16 1 35 16 1.27 0 PCT 20 P2 AV2 -0.18 CTE HTE 0.61 CBAFN 5 U2RF16 1 35 17 0.87 0 PCT 11 P2 AVl 0.03 CTE HTE 0.61 CBAFN 7 U2RF16 1 35 17 0.74 0 PCT 10 P2 AV2 0.2 CTE HTE 0.61 CBAFN 7 U2RF16 1 35 34 1.27 0 PCT 15 P2 AV2 -0.11 CTE HTE 0.61 CBAFN 9 U2RF16 1 35 34 0.75 0 PCT 10 P2 AV3 -0.41 CTE HTE 0.61 CBAFN 9 U2RF16 1 35 100 1.23 0 PCT 19 P2 AV3 0.18 CTE HTE 0.61 CBAFN 33 U2RF16 1 35 101 0.92 0 PCT 14 P2 AVl -0.34 CTE HTE 0.61 CBAFN 31 U2RF16 1 35 101 1.75 0 PCT 23 P2 AV2 0.3 CTE HTE 0.61 CBAFN 31 U2RF16 1 35 101 1.27 0 PCT 18 P2 AV3 0.12 CTE HTE 0.61 CBAFN 31 U2RF16 1 35 101 1.67 0 PCT 22 P2 AV4 0.06 CTE HTE 0.61 CBAFN 31 U2RF16 1 36 15 1.03 0 PCT 13 P2 AV2 -0.29 CTE HTE 0.61 CBAFN 7 U2RF16 1 36 15 0.87 0 PCT 11 P2 AV3 0.12 CTE HTE 0.61 CBAFN 7 U2RF16 1 36 16 1.56 0 PCT 23 P2 AV3 -0.3 CTE HTE 0.61 CBAFN 5 U2RF16 1 36 90 1.06 0 PCT 17 P2 AV2 0.33 CTE HTE 0.61 CBAFN 33 U2RF16 1 36 90 0.67 0 PCT 13 P2 AV4 0.34 CTE HTE 0.61 CBAFN 33 U2RF16 1 36 98 0.76 0 PCT 14 P2 AVl 0.11 CTE HTE 0.61 CBAFN 33 U2RF16 1 36 98 0.91 0 PCT 15 P2 AV3 0.39 CTE HTE 0.61 CBAFN 33 U2RF16 1 36 99 0.67 0 PCT 11 P2 AV2 -0.06 CTE HTE 0.61 CBAFN 31 U2RF16 1 36 99 2.77 0 PCT 30 P2 AV3 0 CTE HTE 0.61 CBAFN 31 U2RF16 1 36 100 1.03 0 PCT 17 P2 AV2 -0.3 CTE HTE 0.61 CBAFN 33 U2RF16 1 36 100 0.23 111 WAR P4 AV2 -0.3 Hll AV2 0.58 NPUN8 109 U2RF16 1 37 16 1.9 0 PCT 25 P2 AV2 -0.18 CTE HTE 0.61 CBAFN 5 U2RF16 1 37 17 3.46 0 PCT 33 P2 AV2 0.2 CTE HTE 0.61 CBAFN 7 U2RF16 1 37 18 0.55 0 PCT 11 P2 AV2 0.08 CTE HTE 0.61 CBAFN 5 U2RF16 1 37 99 0.76 0 PCT 12 P2 AV2 0 CTE HTE 0.61 CBAFN 31 U2RF16 1 37 99 1.2 0 PCT 17 P2 AV3 0.33 CTE HTE 0.61 CBAFN 31 U2RF16 1 38 16 3.37 0 PCT 33 P2 AV2 0.08 CTE HTE 0.61 CBAFN 5 U2RF16 1 38 17 0.93 0 PCT 12 P2 AV2 0.11 CTE HTE 0.61 CBAFN 7 U2RF16 1 38 17 0.9 0 PCT 12 P2 AV3 0.26 CTE HTE 0.61 CBAFN 7 U2RF16 1 38 17 0.92 0 PCT 12 P2 AV4 -0.38 CTE HTE 0.61 CBAFN 7 U2RF16 1 38 36 0.65 0 PCT 9 P2 AV2 0.11 CTE HTE 0.61 CBAFN 9 U2RF16 1 38 89 1.51 0 PCT 21 P2 AVl -0.29 CTE HTE 0.61 CBAFN 31 U2RF16 1 38 89 2.92 0 PCT 31 P2 AV2 -0.15 CTE HTE 0.61 CBAFN 31 U2RF16 1 38 89 1.78 0 PCT 23 P2 AV4 -0.22 CTE HTE 0.61 CBAFN 31 U2RF16 1 38 90 1.04 0 PCT 17 P2 AVl -0.47 CTE HTE 0.61 CBAFN 33 U2RF16 1 38 90 0.83 0 PCT 15 P2 AV2 0.11 CTE HTE 0.61 CBAFN 33 U2RF16 1 38 90 0.85 0 PCT 15 P2 AV4 0.21 CTE HTE 0.61 CBAFN 33 U2RF16 1 38 98 0.96 0 PCT 16 P2 AVl 0 CTE HTE 0.61 CBAFN 33 U2RF16 1 38 98 0.79 0 PCT 14 P2 AV2 0.33 CTE HTE 0.61 CBAFN 33 U2RF16 1 38 98 0.99 0 PCT 16 P2 AV3 -0.08 CTE HTE 0.61 CBAFN 33 U2RF16 1 38 98 0.78 0 PCT 14 P2 AV4 0.18 CTE HTE 0.61 CBAFN 33 U2RF16 1 38 99 1.3 0 PCT 18 P2 AVl 0.18 CTE HTE 0.61 CBAFN 31 Page 17 of29

Attachment to TXX-17083 U2RF16 1 38 99 1.6 0 PCT 21 P2 AV2 0 CTE HTE 0.61 CBAFN 31 U2RF16 1 38 99 1.89 0 PCT 24 P2 AV3 0.09 CTE HTE 0.61 CBAFN 31 U2RF16 1 38 99 0.95 0 PCT 15 P2 AV4 0.32 CTE HTE 0.61 CBAFN 31 U2RF16 1 39 17 1.99 0 PCT 22 P2 AV2 -0.42 CTE HTE 0.61 CBAFN 7 U2RF16 1 39 17 1.26 0 PCT 16 P2 AV3 -0.06 CTE HTE 0.61 CBAFN 7 U2RF16 1 39 17 0.76 0 PCT 10 P2 AV4 -0.09 CTE HTE 0.61 CBAFN 7 U2RF16 1 39 20 2.63 0 PCT 29 P2 AV2 -0.03 CTE HTE 0.61 CBAFN 5 U2RF16 1 39 78 1.12 0 PCT 17 P2 AV3 -0.3 CTE HTE 0.61 CBAFN 29 U2RF16 1 39 78 1.51 0 PCT 21 P2 AV4 0.3 CTE HTE 0.61 CBAFN 29 U2RF16 1 39 89 1.21 0 PCT 18 P2 AV2 0.19 CTE HTE 0.61 CBAFN 31 U2RF16 1 39 91 0.85 0 PCT 13 P2 AVl 0 CTE HTE 0.61 CBAFN 31 U2RF16 1 39 91 0.88 0 PCT 14 P2 AV2 0.31 CTE HTE 0.61 CBAFN 31 U2RF16 1 39 91 0.98 0 PCT 15 P2 AV3 0.32 CTE HTE 0.61 CBAFN 31 U2RF16 1 39 91 1.66 0 PCT 22 P2 AV4 0.03 CTE HTE 0.61 CBAFN 31 U2RF16 1 39 92 0.89 0 PCT 15 P2 AV3 -0.14 CTE HTE 0.61 CBAFN 33 U2RF16 1 39 96 1.27 0 PCT 19 P2 AV4 0.24 CTE HTE 0.61 CBAFN 33 U2RF16 1 40 20 3.62 0 PCT 35 P2 AV2 -0.12 CTE HTE 0.61 CBAFN 5 U2RF16 1 40 20 1.33 0 PCT 21 P2 AV3 -0.17 CTE HTE 0.61 CBAFN 5 U2RF16 1 40 20 1.01 0 PCT 16 P2 AV4 -0.03 CTE HTE 0.61 CBAFN 5 U2RF16 1 40 30 1.37 0 PCT 21 P2 AV2 0.12 CTE HTE 0.61 CBAFN 5 U2RF16 1 40 30 1.57 0 PCT 23 P2 AV3 -0.09 CTE HTE 0.61 CBAFN 5 U2RF16 1 40 30 1.43 0 PCT 21 P2 AV4 -0.2 CTE HTE 0.61 CBAFN 5 U2RF16 1 40 31 0.64 0 PCT 12 P2 AVl -0.26 CTE HTE 0.61 CBAFN 5 U2RF16 1 40 31 1.4 0 PCT 21 P2 AV2 0.06 CTE HTE 0.61 CBAFN 5 U2RF16 1 40 31 1.36 0 PCT 21 P2 AV3 -0.03 CTE HTE 0.61 CBAFN 5 U2RF16 1 40 31 1.37 0 PCT 20 P2 AV4 -0.32 CTE HTE 0.61 CBAFN 5 U2RF16 1 40 41 0.86 0 PCT 11 P2 AV4 0.15 CTE HTE 0.61 CBAFN 9 U2RF16 1 40 43 2.81 0 PCT 29 P2 AV2 -0.12 CTE HTE 0.61 CBAFN 13 U2RF16 1 40 43 4.34 0 PCT 39 P2 AV3 -0.22 CTE HTE 0.61 CBAFN 13 U2RF16 1 40 43 2.56 0 PCT 27 P2 AV4 -0.09 CTE HTE 0.61 CBAFN 13 U2RF16 1 40 45 1.48 0 PCT 18 P2 AV2 0.32 CTE HTE 0.61 CBAFN 13 U2RF16 1 40 60 1.4 0 PCT 18 P2 AV4 0.14 CTE HTE 0.61 CBAFN 13 U2RF16 1 40 71 1 0 PCT 13 P2 AVl 0.24 CTE HTE 0.61 CBAFN 25 U2RF16 1 40 71 0.76 0 PCT 11 P2 AV2 0.06 CTE HTE 0.61 CBAFN 25 U2RF16 1 40 74 0.83 0 PCT 14 P2 AVl 0.05 CTE HTE 0.61 CBAFN 29 U2RF16 1 40 97 1.06 0 PCT 16 P2 AV3 0.09 CTE HTE 0.61 CBAFN 31 U2RF16 1 41 20 0.6 0 PCT 12 P2 AV2 0.19 CTE HTE 0.61 CBAFN 5 U2RF16 1 41 20 1.5 0 PCT 21 P2 AV3 0 CTE HTE 0.61 CBAFN 5 U2RF16 1 41 22 0.68 0 PCT 12 P2 AV2 -0.28 CTE HTE 0.61 CBAFN 5 U2RF16 1 41 32 0.58 0 PCT 11 P2 AV2 0.27 CTE HTE 0.61 CBAFN 5 U2RF16 1 41 88 1.38 0 PCT 20 P2 AV2 -0.36 CTE HTE 0.61 CBAFN 33 U2RF16 1 41 90 2.62 0 PCT 29 P2 AV2 0.41 CTE HTE 0.61 CBAFN 33 U2RF16 1 41 90 0.99 0 PCT 16 P2 AV4 0.15 CTE HTE 0.61 CBAFN 33 Page 18 of29

Attachment to TXX-17083 U2RF16 1 41 93 1.32 0 PCT 19 P2 AV2 0.3 CTE HTE 0.61 CBAFN 31 U2RF16 1 41 93 1.68 0 PCT 22 P2 AV3 -0.27 CTE HTE 0.61 CBAFN 31 U2RF16 1 41 94 2.33 0 PCT 28 P2 AV2 0.36 CTE HTE 0.61 CBAFN 33 U2RF16 1 41 94 0.59 0 PCT 11 P2 AV3 0.12 CTE HTE 0.61 CBAFN 33 U2RF16 1 41 95 0.6 0 PCT 10 P2 AVl -0.38 CTE HTE 0.61 CBAFN 31 U2RF16 1 41 95 1.29 0 PCT 18 P2 AV3 0.03 CTE HTE 0.61 CBAFN 31 U2RF16 1 41 95 0.81 0 PCT 13 P2 AV4 0.03 CTE HTE 0.61 CBAFN 31 U2RF16 1 42 23 0.42 0 PCT 6 P2 AVl -0.35 CTE HTE 0.61 CBAFN 7 U2RF16 1 42 23 0.74 0 PCT 10 P2 AV2 0.03 CTE HTE 0.61 CBAFN 7 U2RF16 1 42 88 1.26 0 PCT 19 P2 AV3 -0.33 CTE HTE 0.61 CBAFN 33 U2RF16 1 42 92 0.69 0 PCT 13 P2 AV2 0.11 CTE HTE 0.61 CBAFN 33 U2RF16 1 42 94 2.87 0 PCT 31 P2 AV2 -0.47 CTE HTE 0.61 CBAFN 33 U2RF16 1 43 35 0.88 0 PCT 11 P2 AV2 0.02 CTE HTE 0.61 CBAFN 9 U2RF16 1 43 77 1.3 0 PCT 17 P2 AV4 0.33 CTE HTE 0.61 CBAFN 25 U2RF16 1 43 81 1.37 0 PCT 17 P2 AVl -0.32 CTE HTE 0.61 CBAFN 25 U2RF16 1 43 81 2.41 0 PCT 26 P2 AV2 -0.43 CTE HTE 0.61 CBAFN 25 U2RF16 1 43 81 2.43 0 PCT 27 P2 AV3 -0.36 CTE HTE 0.61 CBAFN 25 U2RF16 1 43 87 1.38 0 PCT 19 P2 AVl -0.03 CTE HTE 0.61 CBAFN 31 U2RF16 1 43 87 2.25 0 PCT 27 P2 AV2 -0.3 CTE HTE 0.61 CBAFN 31 U2RF16 1 43 87 1.54 0 PCT 21 P2 AV3 0.03 CTE HTE 0.61 CBAFN 31 U2RF16 1 43 87 0.92 0 PCT 14 P2 AV4 -0.29 CTE HTE 0.61 CBAFN 31 U2RF16 1 43 93 1.13 0 PCT 17 P2 AV3 -0.36 CTE HTE 0.61 CBAFN 31 U2RF16 1 44 23 0.64 0 PCT 8 P2 AV4 0.23 CTE HTE 0.61 CBAFN 7 U2RF16 1 44 25 1.95 0 PCT 22 P2 AV2 0 CTE HTE 0.61 CBAFN 7 U2RF16 1 44 27 1.16 0 PCT 14 P2 AV2 0.33 CTE HTE 0.61 CBAFN 9 U2RF16 1 44 60 0.49 0 PCT 11 P2 AV3 -0.19 CTE HTE 0.61 CBAFN 15 U2RF16 1 45 26 2.33 0 PCT 28 P2 AV2 0.33 CTE HTE 0.61 CBAFN 5 U2RF16 1 45 26 0.96 0 PCT 16 P2 AV3 -0.33 CTE HTE 0.61 CBAFN 5 U2RF16 1 45 29 0.86 0 PCT 16 P2 AVl 0.29 CTE HTE 0.61 CBAFN 11 U2RF16 1 45 29 0.76 0 PCT 14 P2 AV2 -0.35 CTE HTE 0.61 CBAFN 11 U2RF16 1 45 29 1.05 0 PCT 18 P2 AV3 0.06 CTE HTE 0.61 CBAFN 11 U2RF16 1 45 34 0.69 0 PCT 12 P2 AVl 0.2 CTE HTE 0.61 CBAFN 11 U2RF16 1 45 34 0.87 0 PCT 14 P2 AV2 0.11 CTE HTE 0.61 CBAFN 11 U2RF16 1 45 34 0.9 0 PCT 14 P2 AV3 0.06 CTE HTE 0.61 CBAFN 11 U2RF16 1 45 69 0.67 0 PCT 10 P2 AV3 0 CTE HTE 0.61 CBAFN 25 U2RF16 1 45 79 3.14 0 PCT 32 P2 AV4 -0.37 CTE HTE 0.61 CBAFN 25 U2RF16 1 45 82 0.69 0 PCT 12 P2 AVl -0.32 CTE HTE 0.61 CBAFN 29 U2RF16 1 45 82 0.75 0 PCT 13 P2 AV2 0.27 CTE HTE 0.61 CBAFN 29 U2RF16 1 45 82 0.81 0 PCT 14 P2 AV4 0.21 CTE HTE 0.61 CBAFN 29 U2RF16 1 45 83 2.37 0 PCT 26 P2 AV2 0.35 CTE HTE 0.61 CBAFN 25 U2RF16 1 45 84 1.42 0 PCT 20 P2 AV2 0.03 CTE HTE 0.61 CBAFN 29 U2RF16 1 45 84 1.48 0 PCT 21 P2 AV3 0.29 CTE HTE 0.61 CBAFN 29 U2RF16 1 45 84 2.18 0 PCT 26 P2 AV4 -0.06 CTE HTE 0.61 CBAFN 29 Page 19 of29

Attachment to TXX-17083 U2RF16 1 4S 87 1.63 0 PCT 22 P2 AVl -0.17 CTE HTE 0.61 CBAFN 31 U2RF16 1 4S 87 1.27 0 PCT 18 P2 AV2 -0.lS CTE HTE 0.61 CBAFN 31 U2RF16 1 4S 87 2.9S 0 PCT 32 P2 AV3 -0.11 CTE HTE 0.61 CBAFN 31 U2RF16 1 4S 87 1.69 0 PCT 22 P2 AV4 -0.06 CTE HTE 0.61 CBAFN 31 U2RF16 1 46 27 0.66 0 PCT 9 P2 AVl 0.06 CTE HTE 0.61 CBAFN 9 U2RF16 1 46 27 1.2 0 PCT lS P2 AV2 0.22 CTE HTE 0.61 CBAFN 9 U2RF16 1 46 27 0.69 0 PCT 9 P2 AV4 0.12 CTE HTE 0.61 CBAFN 9 U2RF16 1 46 31 0.77 0 PCT lS P2 AVl -0.12 CTE HTE 0.61 CBAFN 11 U2RF16 1 46 31 2.27 0 PCT 26 P2 AV2 -0.03 CTE HTE 0.61 CBAFN 11 U2RF16 1 46 31 1.22 0 PCT 18 P2 AV3 0.3 CTE HTE 0.61 CBAFN 11 U2RF16 1 46 31 2.39 0 PCT 27 P2 AV4 0.12 CTE HTE 0.61 CBAFN 11 U2RF16 1 46 83 1.34 0 PCT 20 P2 AVl 0.16 CTE HTE 0.61 CBAFN 29 U2RF16 1 46 83 2.44 0 PCT 28 P2 AV2 o.os CTE HTE 0.61 CBAFN 29 U2RF16 1 46 89 1.43 0 PCT 21 P2 AV2 0.08 CTE HTE 0.61 CBAFN 33 U2RF16 1 46 89 1.98 0 PCT 2S P2 AV4 -0.32 CTE HTE 0.61 CBAFN 33 U2RF16 1 47 so 0.73 0 PCT lS P2 AV4 0.06 CTE HTE 0.61 CBAFN lS U2RF16 1 48 30 0.36 0 PCT 8 P2 AVl -0.3S CTE HTE 0.61 CBAFN 11 U2RF16 1 48 38 0.3 0 PCT 6 P3 C2 0 CTE HTE 0.61 CBACC 117 U2RF16 1 48 38 0.13 109 WAR 6 C2 0.4 C2 C2 0.61 NPS3C 28 U2RF16 1 49 S6 0.72 0 PCT 14 P2 AV4 0 CTE HTE 0.61 CBACC 117 U2RF16 1 49 S6 0.18 0 PCT 4 P3 cs -0.4 CTE HTE 0.61 CB ACC 117 U2RF16 1 49 S6 0.07 96 WAR 6 cs -0.4 cs cs 0.61 NPS3C 12 U2RF16 1 49 67 O.S4 0 PCT 16 6 C7 0.41 C7 C7 0.61 NPS3C 12 U2RF16 1 49 67 0.Sl 101 WAR 6 C7 0.46 C7 C7 0.61 NPS3C 12 U2RF16 2 3 114 0.7 142 DSS Pl C4 O.S8 CTE HTE 0.61 CBAFN 67 U2RF16 2 3 114 0.26 0 PCT 24 6 C4 0.4 C4 C4 0.61 NPS3C 28 U2RF16 2 3 114 0.34 97 VOL 6 C4 0.4 C4 C4 0.61 NPS3C 22 U2RF16 2 4 114 0.32 147 DSS Pl C4 0.62 CTE HTE 0.61 CBAFN 67 U2RF16 2 4 114 0.17 0 PCT 17 6 C4 0.42 C4 C4 0.61 NPS3C 28 U2RF16 2 4 114 0.2 99 VOL 6 C4 0.42 C4 C4 0.61 NPS3C 22 U2RF16 2 6 1 0.17 0 PCT 17 6 Cl 0.Sl Cl Cl 0.61 NPS3C 28 U2RF16 2 6 1 O.lS 8S VOL 6 Cl O.Sl Cl Cl 0.61 NPS3C 8 U2RF16 2 6 2 0.44 77 DSS Pl Cl 0.49 CTE HTE 0.61 CBAFN 4S U2RF16 2 6 2 0.33 0 PCT 28 6 Cl 0.49 Cl Cl 0.61 NPS3C 28 U2RF16 2 6 2 0.16 0 PCT 16 6 Cl 0.87 Cl Cl 0.61 NPS3C 28 U2RF16 2 6 2 0.26 87 VOL 6 Cl 0.49 Cl Cl 0.61 NPS3C 8 U2RF16 2 6 2 0.12 101 VOL 6 Cl 0.84 Cl Cl 0.61 NPS3C 8 U2RF16 2 24 108 0.8S 0 PCT 13 P2 AV4 0.2 CTE HTE 0.61 CBAFN 63 U2RF16 2 26 9 0.77 0 PCT 13 P2 AV2 -0.29 CTE HTE 0.61 CBAFN Sl U2RF16 2 26 9 0.74 0 PCT 12 P2 AV3 0 CTE HTE 0.61 CBAFN Sl U2RF16 2 30 11 1.23 0 PCT 18 P2 AV2 0.46 CTE HTE 0.61 CBAFN Sl U2RF16 2 30 11 1.34 0 PCT 18 P2 AV3 0.36 CTE HTE 0.61 CBAFN Sl U2RF16 2 30 104 1.17 0 PCT 16 P2 AVl o.os CTE HTE 0.61 CBAFN 61 Page 20 of29

Attachment to TXX-17083 U2RF16 2 30 104 0.62 0 PCT 10 P2 AV4 0.03 CTE HTE 0.61 CBAFN 61 U2RF16 2 33 86 1.27 0 PCT 17 P2 AV2 0.18 CTE HTE 0.61 CBAFN 63 U2RF16 2 33 86 0.71 0 PCT 11 P2 AV3 0.12 CTE HTE 0.61 CBAFN 63 U2RF16 2 33 88 0.7 0 PCT 11 P2 AV2 -0.29 CTE HTE 0.61 CBAF N 63 U2RF16 2 34 13 2.23 0 PCT 25 P2 AV2 0 CTE HTE 0.61 CBAFN 51 U2RF16 2 34 13 1.32 0 PCT 18 P2 AV3 -0.29 CTE HTE 0.61 CBAF N 51 U2RF16 2 36 99 2.83 0 PCT 28 P2 AV2 0.03 CTE HTE 0.61 CBAFN 61 U2RF16 2 37 72 0. 57 0 PCT 10 P2 AVl 0 CTE HTE 0.61 CBAFN 59 U2RF16 2 37 72 0.7 0 PCT 12 P2 AV2 0 CTE HTE 0.61 CBAFN 59 U2RF16 2 37 72 0.59 0 PCT 10 P2 AV3 0 CTE HTE 0.61 CBAFN 59 U2RF16 2 37 76 0.84 0 PCT 14 P2 AVl 0.46 CTE HTE 0.61 CBAFN 59 U2RF16 2 37 76 0.98 0 PCT 15 P2 AV2 -0.44 CTE HTE 0.61 CBAFN 59 U2RF16 2 38 56 0.91 0 PCT 15 P2 AV3 0.17 CTE HTE 0.61 CBAFN 55 U2RF16 2 38 76 1.01 0 PCT 15 P2 AV2 -0.29 CTE HTE 0.61 CBAFN 63 U2RF16 2 39 19 1.63 0 PCT 21 P2 AV2 0.26 CTE HTE 0.61 CBAFN 51 U2RF16 2 39 19 1.24 0 PCT 18 P2 AV3 -0.32 CTE HTE 0.61 CBAFN 51 U2RF16 2 39 19 1.07 0 PCT 16 P2 AV4 0.06 CTE HTE 0.61 CBAFN 51 U2RF16 2 39 34 1.21 0 PCT 17 P2 AV2 0.2 CTE HTE 0.61 CBAFN 49 U2RF16 2 39 34 1.3 0 PCT 18 P2 AV3 0.18 CTE HTE 0.61 CBAFN 49 U2RF16 2 40 29 1.19 0 PCT 17 P2 AV2 0.23 CTE HTE 0.61 CBAFN 49 U2RF16 2 40 29 1.83 0 PCT 22 P2 AV3 0.38 CTE HTE 0.61 CBAFN 49 U2RF16 2 40 29 0.99 0 PCT 15 P2 AV4 0.46 CTE HTE 0.61 CBAFN 49 U2RF16 2 40 76 0.97 0 PCT 15 P2 AV2 0 CTE HTE 0.61 CBAFN 63 U2RF16 2 40 86 1.06 0 PCT 15 P2 AV2 -0.03 CTE HTE 0.61 CBAFN 63 U2RF16 2 40 86 0.65 0 PCT 11 P2 AV3 0 CTE HTE 0.61 CBAFN 63 U2RF16 2 41 34 1.15 0 PCT 17 P2 AV3 0.26 CTE HTE 0.61 CBAFN 49 U2RF16 2 44 47 0.79 0 PCT 12 P2 AV3 -0.24 CTE HTE 0.61 CBAFN 53 U2RF16 2 44 47 1.45 0 PCT 19 P2 AV4 -0.03 CTE HTE 0.61 CBAFN 53 U2RF16 2 44 47 0.2 87 WAR 2 AV4 -0.04 Cll AV4 0.58 NPUN8 26 U2RF16 2 44 47 0.25 104 WAR 2 AV4 0.01 Cll AV4 0.58 NPUN8 26 U2RF16 2 44 89 3.37 0 PCT 30 P2 AV2 0 CTE HTE 0.61 CBAFN 61 U2RF16 2 44 89 2.29 0 PCT 25 P2 AV3 0 CTE HTE 0.61 CBAFN 61 U2RF16 2 44 89 1.16 0 PCT 16 P2 AV4 0 CTE HTE 0.61 CBAFN 61 U2RF16 2 44 91 1.2 0 PCT 16 P2 AV3 0.14 CTE HTE 0.61 CBAFN 61 U2RF16 2 45 37 0.8 0 PCT 13 P2 AVl -0.42 CTE HTE 0.61 CBAFN 49 U2RF16 2 45 91 1.45 0 PCT 19 P2 AV3 0 CTE HTE 0.61 CBAFN 61 U2RF16 2 45 91 1.31 0 PCT 17 P2 AV4 0 CTE HTE 0.61 CBAFN 61 U2RF16 2 46 75 0.95 0 PCT 14 P2 AV3 -0.33 CTE HTE 0.61 CBAFN 61 U2RF16 2 46 75 1.39 0 PCT 18 P2 AV4 0 CTE HTE 0.61 CBAFN 61 U2RF16 2 47 88 1.27 0 PCT 17 P2 AV4 0.15 CTE HTE 0.61 CBAFN 63 U2RF16 2 48 56 0.66 0 PCT 11 P2 AV2 -0.32 CTE HTE 0.61 CBAFN 53 U2RF16 2 48 69 1.72 0 PCT 21 P2 AV4 0.18 CTE HTE 0.61 CBAFN 63 U2RF16 3 1 94 0.96 18 PCT 46 0 0.21 32 P2 HTS -1.97 HTS HTS 0.61 NPS3C 33 Page 21 of29

Attachment to TXX-17083 U2RF16 3 1 94 1.03 17 PCT 43 0.26 0.23 3S P2 HTS -1.97 HTS HTS 0.61 NPS3C 33 U2RF16 3 1 94 0.77 17 PCT 43 0.22 0. 26 40 P2 HTS -1.9S HTS HTS 0.61 NPS3C 33 U2RF16 3 1 94 0.79 17 PCT 43 0.22 0. 23 3S P2 HTS -l.9S HTS HTS 0.61 NPS3C 33 U2RF16 3 1 94 0.92 18 SCI P2 HTS -2.03 HTS HTS 0.61 NPS3C 33 U2RF16 3 1 94 0.8 14 SCI P2 HTS -2.02 HTS HTS 0.61 NPS3C 33 U2RF16 3 s 79 0.71 18 PCT 48 0.29 0.2 31 P2 HTS -1.19 HTS HTS 0.61 NPS3C 61 U2RF16 3 s 79 0.71 18 SCI P2 HTS -1.11 HTS HTS 0.61 NPS3C 61 U2RF16 3 17 S6 1.82 0 PCT 24 P2 AV4 O.Sl CTE HTE 0.61 CBAFN lOS U2RF16 3 21 so 0.11 0 PCT 12 6 C2 0.66 C2 C2 0.61 NPS3C 36 U2RF16 3 21 so 0.12 0 VOL 6 C2 0.63 C2 C2 0.61 NPS3C 34 U2RF16 3 24 107 1.47 0 PCT 21 P2 AV2 0.04 CTE HTE 0.61 CBAFN 9S U2RF16 3 26 107 1.7 0 PCT 22 P2 AV2 0 CTE HTE 0.61 CBAFN 9S U2RF16 3 30 lOS 2.18 0 PCT 26 P2 AV2 -0.36 CTE HTE 0.61 CBAFN 9S U2RF16 3 31 103 1.32 0 PCT 20 P2 AVl -0.37 CTE HTE 0.61 CBAFN 9S U2RF16 3 31 104 0.62 0 PCT 12 P2 AV4 0 CTE HTE 0.61 CBAFN 97 U2RF16 3 32 12 1.S7 0 PCT 22 P2 AV2 0.13 CTE HTE 0.61 CBAFN 89 U2RF16 3 33 17 1.1 0 PCT 18 P2 AV3 0 CTE HTE 0.61 CBAFN 83 U2RF16 3 33 87 1.69 0 PCT 22 P2 AV4 0.03 CTE HTE 0.61 CBAFN 91 U2RF16 3 33 103 1.4 0 PCT 21 P2 AVl 0.38 CTE HTE 0.61 CBAFN 9S U2RF16 3 33 103 0.92 0 PCT 17 P2 AV2 0.11 CTE HTE 0.61 CBAFN 9S U2RF16 3 33 103 2.64 0 PCT 28 P2 AV3 -0.03 CTE HTE 0.61 CBAFN 9S U2RF16 3 33 103 1.16 0 PCT 18 P2 AV4 -0.03 CTE HTE 0.61 CBAFN 9S U2RF16 3 34 101 3.1 0 PCT 30 P2 AV2 -0.06 CTE HTE 0.61 CBAFN 9S U2RF16 3 3S 100 0.79 0 PCT 14 P2 AV2 0.03 CTE HTE 0.61 CBAFN 97 U2RF16 3 3S 101 0.79 0 PCT 14 P2 AVl 0.06 CTE HTE 0.61 CBAFN 9S U2RF16 3 3S 101 0.78 0 PCT lS P2 AV4 -0.31 CTE HTE 0.61 CBAFN 9S U2RF16 3 37 92 0.87 0 PCT 16 P2 AV2 -0.31 CTE HTE 0.61 CBAFN 93 U2RF16 3 37 98 0.74 0 PCT 14 P2 AV2 0.3 CTE HTE 0.61 CBAFN 93 U2RF16 3 38 98 0.Sl 0 PCT 11 P2 AVl -0.06 CTE HTE 0.61 CBAFN 93 U2RF16 3 38 98 2.47 0 PCT 29 P2 AV2 -0.39 CTE HTE 0.61 CBAFN 93 U2RF16 3 38 98 0.8S 0 PCT lS P2 AV3 0.09 CTE HTE 0.61 CBAFN 93 U2RF16 3 39 93 0.81 0 PCT 14 P2 AV2 0.38 CTE HTE 0.61 CBAFN 91 U2RF16 3 40 87 1.09 0 PCT 17 P2 AV2 0 CTE HTE 0.61 CBAFN 91 U2RF16 3 40 88 0.7S 0 PCT 13 P2 AV2 0.2S CTE HTE 0.61 CBAFN 93 U2RF16 3 40 88 0.8S 0 PCT 14 P2 AV3 -0.2 CTE HTE 0.61 CBAFN 93 U2RF16 3 40 94 0.77 0 PCT 14 P2 AVl 0 CTE HTE 0.61 CBAFN 93 U2RF16 3 40 94 0.84 0 PCT lS P2 AV3 0 CTE HTE 0.61 CBAFN 93 U2RF16 3 40 9S 1 0 PCT 16 P2 AVl O.lS CTE HTE 0.61 CBAFN 91 U2RF16 3 40 9S 1.01 0 PCT 16 P2 AV2 -0.18 CTE HTE 0.61 CBAFN 91 U2RF16 3 40 9S 0.81 0 PCT 14 P2 AV3 0.09 CTE HTE 0.61 CBAFN 91 U2RF16 3 40 9S O.S6 0 PCT 11 P2 AV4 0.09 CTE HTE 0.61 CBAFN 91 U2RF16 3 41 24 0.89 0 PCT 14 P2 AV3 -0.03 CTE HTE 0.61 CBAFN 8S U2RF16 3 41 24 O.S4 0 PCT 10 P2 AV4 O.lS CTE HTE 0.61 CBAFN 8S Page 22 of29

Attachment to TXX-17083 U2RF16 3 41 83 0.83 0 PCT 14 P2 AV2 0.06 CTE HTE 0.61 CBAFN 91 U2RF16 3 41 83 0.49 0 PCT 10 P2 AV3 -0.28 CTE HTE 0.61 CBAFN 91 U2RF16 3 41 8S 1.36 0 PCT 20 P2 AV3 0.09 CTE HTE 0.61 CBAFN 91 U2RF16 3 41 87 1.02 0 PCT 16 P2 AVl 0.11 CTE HTE 0.61 CBAFN 91 U2RF16 3 41 87 1.4S 0 PCT 20 P2 AV2 -0.03 CTE HTE 0.61 CBAFN 91 U2RF16 3 41 87 1.S 0 PCT 21 P2 AV3 0.03 CTE HTE 0.61 CBAFN 91 U2RF16 3 43 24 0.7 0 PCT 12 P2 AV2 -0. 06 CTE HTE 0.61 CBAFN 8S U2RF16 3 43 68 0.98 0 PCT 16 P2 AV2 0.17 CTE HTE 0.61 CBAFN 93 U2RF16 3 43 68 0.47 0 PCT 9 P2 AV3 0.42 CTE HTE 0.61 CBAFN 93 U2RF16 3 43 68 0.63 0 PCT 12 P2 AV4 0.37 CTE HTE 0.61 CBAFN 93 U2RF16 3 43 82 0.6S 0 PCT 12 P2 AVl 0 CTE HTE 0.61 CBAFN 93 U2RF16 3 43 82 2.64 0 PCT 30 P2 AV2 0 CTE HTE 0.61 CBAFN 93 U2RF16 3 43 82 2.79 0 PCT 30 P2 AV3 0.11 CTE HTE 0.61 CBAFN 93 U2RF16 3 43 82 2. 02 0 PCT 26 P2 AV4 -0.12 CTE HTE 0.61 CBAFN 93 U2RF16 3 43 93 0.9 0 PCT lS P2 AV2 0.09 CTE HTE 0.61 CBAFN 91 U2RF16 3 4S SS 0.33 0 PCT 7 P3 C2 0.06 CTE HTE 0.61 CBAFN lOS U2RF16 3 4S SS 0.76 0 WAR s C2 0.16 C2 C2 0.61 NPS3C 6 U2RF16 3 48 62 0.7 0 PCT 13 P2 AVl -0.06 CTE HTE 0.61 CBAFN 91 U2RF16 3 48 86 0.64 2S PCT 69 0.22 0.39 60 P2 HTS 0.04 HTS HTS 0.61 NPS3C 3S U2RF16 3 48 86 O.SS 26 SCI P2 HTS 0 HTS HTS 0.61 NPS3C 3S U2RF16 3 49 3S 1.0S 0 PCT 17 P2 AV4 -0.14 CTE HTE 0.61 CBAFN 87 U2R F16 3 49 36 0.61 0 PCT 12 P2 AV4 0 CTE HTE 0.61 CBAFN 89 U2RF16 3 49 38 0.77 0 PCT 14 P2 AVl 0.06 CTE HTE 0.61 CBAFN 87 U2RF16 3 49 38 0.7 0 PCT 13 P2 AV4 -0.17 CTE HTE 0.61 CBAFN 87 U2RF16 3 49 42 0.79 0 PCT 14 P2 AV4 0.06 CTE HTE 0.61 CBAFN 89 U2RF16 3 49 43 O.S3 0 PCT 11 P2 AVl -O.S2 CTE HTE 0.61 CBAFN 87 U2RF16 3 49 43 0.84 0 PCT lS P2 AV4 0.18 CTE HTE 0.61 CBAFN 87 U2RF16 3 49 47 0.42 0 PCT 9 P2 AVl -0.lS CTE HTE 0.61 CBAFN 87 U2RF16 3 49 49 0.5 0 PCT 10 P2 AVl 0 CTE HTE 0.61 CBAFN 87 U2RF16 3 49 49 O.S2 0 PCT 11 P2 AV4 0 CTE HTE 0.61 CBAFN 87 U2RF16 3 49 64 0.6S 0 PCT 12 P2 AVl 0 CTE HTE 0.61 CBAFN 91 U2RF16 3 49 67 0.4S 0 PCT 10 P2 AVl 0.06 CTE HTE 0.61 CBAFN 91 U2RF16 3 49 68 0.6S 0 PCT 12 P2 AVl -0.03 CTE HTE 0.61 CBAFN 91 U2RF16 4 13 92 0.31 0 PCT 14 PS C6 0.49 C6 C6 0.61 NPS3C 28 U2RF16 4 13 92 0.21 70 VOL P2 C6 0.4 C6 C6 0.61 NPS3C 8 U2RF16 4 23 93 0.46 0 PCT 10 P2 AV2 0 CTE HTE 0.61 CBAFN 9 U2RF16 4 26 69 0.17 0 PCT 18 6 C2 1.29 C2 C2 0.61 NPS3C 26 U2RF16 4 27 so 1.14 0 PCT 19 P2 AV4 0.31 CTE HTE 0.61 CBAFN 23 U2RF16 4 29 99 O.Sl 0 PCT 10 P2 AV3 0 CTE HTE 0.61 CBAFN 9 U2RF16 4 31 98 0.86 0 PCT lS P2 AV2 -0.26 CTE HTE 0.61 CBAFN 11 U2RF16 4 31 98 0.43 0 PCT 9 P2 AV3 0 CTE HTE 0.61 CBAFN 11 U2RF16 4 32 71 0.27 0 PCT 2S 6 C2 0.64 C2 C2 0.61 NPS3C 26 U2RF16 4 32 71 0.33 0 VOL 6 C2 O.S3 C2 C2 0.61 NPS3C 6 Page 23 of29

Attachment to TXX-17083 U2RF16 4 34 77 0.15 0 PCT 17 6 C2 0.53 C2 C2 0.61 NPS3C 26 U2RF16 4 34 77 0.17 0 VOL 6 C2 0.51 C2 C2 0.61 NPS3C 6 U2RF16 4 35 82 1.31 0 PCT 20 P2 AV2 0.06 CTE HTE 0.61 CBAFN 7 U2RF16 4 35 82 0.65 0 PCT 13 P2 AV3 0.03 CTE HTE 0.61 CBAFN 7 U2RF16 4 36 90 0.84 0 PCT 15 P2 AV4 -0.03 CTE HTE 0.61 CBAFN 11 U2RF16 4 36 97 0.7 0 PCT 14 P2 AVl 0 CTE HTE 0.61 CBAFN 15 U2RF16 4 36 97 0.81 0 PCT 14 P2 AV2 -0.25 CTE HTE 0.61 CBAFN 15 U2RF16 4 37 84 1.39 0 PCT 21 P2 AV2 0.12 CTE HTE 0.61 CBAFN 7 U2RF16 4 37 84 1.68 0 PCT 23 P2 AV3 -0.16 CTE HTE 0.61 CBAFN 7 U2RF16 4 37 84 0.63 0 PCT 12 P2 AV4 -0.22 CTE HTE 0.61 CBAFN 7 U2RF16 4 37 92 0.93 0 PCT 15 P2 AV2 -0.28 CTE HTE 0.61 CBAFN 13 U2RF16 4 37 92 0.58 0 PCT 11 P2 AV3 -0.03 CTE HTE 0.61 CBAFN 13 U2RF16 4 37 92 0.58 0 PCT 11 P2 AV4 -0.34 CTE HTE 0.61 CBAFN 13 U2RF16 4 37 96 0.65 0 PCT 12 P2 AV2 0 CTE HTE 0.61 CBAFN 13 U2RF16 4 38 68 0.77 0 PCT 15 P2 AV2 0.2 CTE HTE 0.61 CBAFN 1 U2RF16 4 38 71 1.1 0 PCT 18 P2 AV2 -0.22 CTE HTE 0.61 CBAFN 1 U2RF16 4 38 71 0.63 0 PCT 13 P2 AV3 -0.3 CTE HTE 0.61 CBAFN 1 U2RF16 4 38 79 0.9 0 PCT 15 P2 AV3 0 CTE HTE 0.61 CBAFN 7 U2RF16 4 38 97 0.76 0 PCT 15 P2 AV2 0 CTE HTE 0.61 CBAFN 15 U2RF16 4 38 97 0.77 0 PCT 15 P2 AV3 0 CTE HTE 0.61 CBAFN 15 U2RF16 4 39 19 0.56 0 PCT 12 P2 AV2 0 CTE HTE 0.61 CBAFN 19 U2RF16 4 39 22 0.61 0 PCT 12 P2 AV4 0.28 CTE HTE 0.61 CBAFN 17 U2RF16 4 40 90 0.79 0 PCT 14 P2 AV2 0 CTE HTE 0.61 CBAFN 13 U2RF16 4 40 97 0.93 0 PCT 17 P2 AV3 0 CTE HTE 0.61 CBAFN 15 U2RF16 4 40 97 0.76 0 PCT 14 P2 AV4 -0.14 CTE HTE 0.61 CBAFN 15 U2RF16 4 44 89 0.71 0 PCT 14 P2 AV2 0 CTE HTE 0.61 CBAFN 15 U2RF16 4 44 89 0.86 0 PCT 15 P2 AV3 -0.22 CTE HTE 0.61 CBAFN 15 U2RF16 4 44 89 0.9 0 PCT 16 P2 AV4 -0.22 CTE HTE 0.61 CBAFN 15 U2RF16 4 45 24 0.69 0 PCT 13 P2 AV4 0.06 CTE HTE 0.61 CBAFN 17 U2RF16 4 45 25 0.35 0 PCT 8 P2 AV4 -0.19 CTE HTE 0.61 CBAFN 19 U2RF16 4 45 32 0.5 0 PCT 10 P2 AV4 -0.05 CTE HTE 0.61 CBAFN 17 U2RF16 4 47 59 0.7 0 PCT 12 P2 AV4 -0.32 CTE HTE 0.61 CBAFN 13 U2RF16 4 48 74 0.6 0 PCT 11 P2 AV4 -0.11 CTE HTE 0.61 CBAFN 13 Page 24 of29

Attachment to TXX-17083 t

63.84 1

113.50 113.50 j

814.56 812.03 3.02 - - - . + H l o l - - -

62 .62 A.

Model 05 Dwg.No.1103J99 Figure 3A: Unit 2 Model 05 Steam Generator General Arrangement Page 25 of 29

Attachment to TXX-17083

' I I ..... _ - - - - - - -

Access Port #2 --+ P (H1°1l I C11 1 N (H10) C10 Located on the Y Axis MWY side SG 2 & 4 NZL side SG 1 &3 M (H9) C9 l

Access Port #1 --+ L(H8) ca J (H7) K (C7)

Hand Hole "E" Located approximately H (C6) 4.3 Deg from *y* Axis on CL side F (HS) 1------f Ct; (C5)

E (C4)

C (H3) 0 (C3) Hand Hole "O" Located approximately Hand Holes 7 inches above BP 'B' "A", "B", and "C" Located at 9 at ° B (C2) on *z* Axis Axes "W', "X", and "Y" R ivelt-. (H1) c1

_ ___.1':.:::::::j:::::::~~.L-'-__, 4 Inspection Ports at 90° atTTS Located approximately 5 inches above BP 'A' Figure 38: Unit 2 Model D5 SG General Location and Designation of Tube Support

/Baffle Plates (Designations in parentheses show eddy current test terminology)

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Attachment to TXX-17083 Figure 3C: Photograph of Indication in SG1 Cold Leg Channel Head Cladding Page 27 of 29

Attachment to TXX-17083 Figure 30: Photograph of Indication in the Cold Leg Channel Head Cladding of SG 2-01 in 2RF16 Figure 3E: Image of SG 2-02 Hot Leg Tube R1-C109 Note: Anomaly is not visible; the red spot is the bowl camera laser pointing at the Tube R1-C109.

Page 28 of 29

Attachment to TXX-17083 Figure 3F: Image of the Anomaly on SG 2-02 Hot Leg Tube R1-C109 Page 29 of 29

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