ML20210L436

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Cycle 9 12-Month SG Insp Rept
ML20210L436
Person / Time
Site: Sequoyah Tennessee Valley Authority icon.png
Issue date: 08/02/1999
From:
TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20210L433 List:
References
NUDOCS 9908090126
Download: ML20210L436 (50)


Text

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ENCLOSURE i

1 SEQUOYAH NUCLEAR PLANT j

UNIT 2 CYCLE 9 12-MONTH STEAM GENERATOR INSPECTION REPORT AND 90-DAY REPORT FOR VOLTAGE BASED ALTERNATE REPAIR CRITERIA

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I 9900090126 990802 PDR ADOCK 05000328 P

PDR

i TABLE OF CONTENTS Introduction 3

SG Tube Inservice Inspection Scope 4

Integrity Assessment Criteria 6

SG Tube inspection Results 8

PWSCC U-Bend 8

PWSCC TTS 9

i ODSCC TSP 11 AVB Wear / Cold Leg Wastage /Other Plugged Tubes 11 Secondary Side Inspection Scope and Results 13 Conclusions 14 Tables j

1 Summary of Unit 2 Cycle 9 SG Eddy Curront Inspection / Tube Plugging Results 2

Resolution of Defective Tubes and All Service Induced Wall Loss Indications Attachment Generic Letter 95-05 Cycle 10 Voltage-Based Repair Criteria 90-Day Report l

lIsglsqnlu2c91u2c9 nrc report 2

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u INTRODUCTION During the scheduled Sequoyah Nuclear Plant (SON) Unit 2 Cycle 9 refueling outage (U2C9 RFO) extensive inservice inspections were conducted in all four steam generators (SGs) to address all active and potential damage mechanisms identified in the Unit 2 Degradation Assessment. The results of the inspections were classified as follows:

SG1 SG2 SG3 SG4 Full Length Bobbin Coil C-2 C-2 C-2 C-2 U-Bend + Point C-2 C-3 C-1 C-1 TTS RPC C-2 C-2 C-2 C-2 Dented Plus Point C-1 C-1 C-1 C-1 Freespan Ding + Point C-1 C-1 C-1 C-1 ARC implementation continued during this inspection due to the detection of outside diameter stress corrosion cracking (ODSCC) at tube support plate (TSP) intersections. A report with details of this implementation is enclosed as an Attachment.

This report fulfills the reporting requirements of_ SON Technical Specification section 4.4.5.5.b for reporti ig results of SG inservice inspection, section 4.4.5.5.c for C-3 reporting, and the Generic Letter 95-05 required 90-day report I

for voltage-based repair criteria.

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Ilsglsqnlu2c9/u2c9 nrc report 3

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.y SG TUBE INSERVICE INSPECTION SCOPE The SON SG tube inservice inspection (ISI) initial sample and expansion for all SGs and all damage mechanisms was as follows:

100% full-length bobbin examination in all 4 SGs Following the Unit 2 Cycle 9 outage, during review of data, it was L

discovered that the bobbin coil data for one tube, SG3 R7 C14, was l

missing one support plate signal. The partial tube test occurred when an L

operator inadvertently. stopped and restarted the eddy current tester while the probe continued to be pulled from the tube. The section of tube not -

recorded was the 4* hot leg support plate and a portion of the freespan tubing between the 3'd and 5* hot leg supports. One analyst identified the l

problem, and recorded it as "RBD," retest bad data. The resolution analyst changed the call to "NDD," no degradation detected. The resolution analyst failed to notice the unusual event of a missing support.

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The problem was entered into the Sequoyah Corrective Actions Program l

and the following corrective actions were completed:

1. Steam generator 3 data was reviewed for other retests identified by l

either the primary or secondary analysts which were not kept as retests by the resolution analysts.

2. Twenty percent of the other steam generators' data was reviewed for L

retests identified by primary or secondary analysts and not kept as retests by the resolution analysts.

3. Westinghouse was notified and instructed to alert acquisition operators and analysts of the potential for this problem.
4. SG3 R7 C14 data from the previous outage, Cycle 8, was reviewed to l

l ensure no indication of degradation exists which could affect the I

operability of the plant.

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5. The potential for this problem will be raised in future training of analysts.

1 Upon review of the 20% of the other steam generators, one additional L

tube, SG2 R27 C57 was found to be missing the 1*' hot let support plate and a portion of tubing between the top of the tubesheet and the 2"'

l support plate.

Ilsglsqntu2ct/u2c8 nrc report 4

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y After this finding, the remaining 80% of all steam generators' retest data was reviewed. No additional tubes were identified with missing portions of data. SG2 R27 C57 data from the previous outage, Cycle 8, was reviewed to ensure no indication of degradation exists which could affect the operability of the plant.

100% hot leg top of tubesheet (TTS) (WEXTEX transition region) examination in all 4 SGs with plus point probe.

100% Row 1 and 2 U-Bend examinations in all 4 SGs with magnetic biased ZETEC plus point Row 1&2 U-Bend RPC probe.

100% hot leg freespan dents from the top of the tubesheet to H02 with plus point probe.

100% >=5 volt dented TSP intersections from H01 to H07 in all 4 SGs with plus point probe.

100% < 5 volt dented TSP intersections from H01 to H03 and a 20% random sample of H04 in all 4 SGs with plus point probe.

100% of <2 volt dented TSP intersections were examined during the bobbin coil examination utilizing the qualified technique for detection of primary water stress corrosion cracking (PWSCC). This requires an additional two days of extensive analyst training and testing.

The inspection of dented TSPs is performed to envelop the highest TSP with identified PWSCC indications based on unit 1. experience since the PWSCC degradation mechanism is strongly temperature dependent.

All test techniques used for detection were EPRI Appendix H qualified examination techniques and validated for use at SON. Sizing techniques

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were also Appendix H qualified where available. If qualified sizing techniques did not exist, the best available technique was used.

No expansions were necessary, ling /sqntu2ctlu2c8 nrc report 5

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INTEGRITY ASSESSMENT CRITERIA All crack-like indications were screened for in-situ pressure testing using I~

guidance from the Draft EPRI in-Situ Guidelines and using critical flaw parameters developed specifically for Sequoyah by Westinghouse. Both L

documents support a three-step process for screening for structural and for leakage integrity, beginning with. length for structural integrity and voltage for leakage integrity.

The screening values for 3 times normal operating delta pressure are as follows.

Uncertainties are accounted for in the screening criteria where applicable:

Axial Flaws for Structural Intearity:

Step 1 - Length Straioht Leo Row 1 U-Bend Row 2 U-Bend

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0.465" (ID/OD) 0.714" (ID/OD) 0.672" (ID/OD)

Step 2 - For those indications that exceed Step 1 length - Maximum Depth

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Straiaht Leo Row 1 U-Bend Row 2 U-Bend 63% for 1.5" flaw 79% for 1.5" flaw 77% for 1.5" flaw (ID/OD)

(ID/OD)

(ID/OD)

Step 3 - For those indications that exceed both Steps 1 and 2 - Examine average depth versus length Axial Flaws for Leakaae Intearity:

Step 1 - Maximum Voltage Straioht Lea Row 1 U-Bend Row 2 U-Bend ID OD ID OD ID OD 2V 1.5V 2V l.5V 2V 1.5V Step 2 - For those indications that exceed Step 1 - Maximum Depth Straiaht Lea Row 1 U-Bend Row 2 U-Bend ID OD ID OD ID OD 80 % 75 %

80 % 75%

80% 75%

Step 3 - For those indications that exceed both Steps 1 and 2 - Examine Maximum depth versus length - Length at Maximum Depth must exceed 0.1"

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lisglsqnlu2c9/u2c9 nrc report 6

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i Circumferential Flaws for Structural Intearity:

L Step 1 - Angle - 223 (ID/OD)

' Step 2 - For those indications that exceed Step 1 - Average Depth - 50%

(ID/OD)

Circumferential Flaws for Leakaae Intearity:

Step 1 - Maximum Voltage - 1.5V ID - 1V OD l

Step 2 - For those indications that exceed Step 1 - Maximum Depth - 80% ID -

t 75% OD i

Step 3 - For those indications that exceed both Steps 1 and 2 - Examine Maximum depth versus angle - Angle at Maximum Depth must exceed 20 i

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lisg/sqntu2ctfu2c8 nrc report 7

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SG TUBE INSPECTION RESULTS Table 1 summarizes the SQN U2C9 eddy current testing ISI exams, active

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degradation, and the repair status of the SGs. Table 2 provides a summary of

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. the tube damage detected and a characterization of the damage morphology.

Degradation Mechanisms Detected PWSCC U-Bend l

A low occurrence of PWSCC in the Row 1 U-bend area was predicted in the

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degradation assessment. Axial PWSCC was detected in 4 tubes.

J C-3 Reportina Reauirement i

SG 2 had three tubes with U-Bend PWSCC. Since the inspection scope for Row j

1 and 2 U-Bends in SG 2 was only 157 tubes, this inspection was categorized j

J as C-3. However, since 100% inspection of Rows 1 and 2 was performed and since all indications were in Row 1 tubes, no further investigation was necessary. PWSCC at inner radius U-Bends is directly related to cold work and residual stresses associated with the tubing manufacturing technique. The Unit 2 U-Bends operated in this condition for multiple cycles and subsequently were in situ stress relieved as a corrective measure. Cracking initiated prior to stress relief and continues to grow to detectable levels. Also, continually improving i

detection techniques are being utilized. The U-Bends were inspected with I

magnetic bias plus point for the first time this inspection. The 100% inspection

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ensures that significant flaws are removed from service.

Axial PWSCC was detected in the U-bend area of 4 tubes-SG Row Column Location Length Max Average Max or Angle Depth Depth Volts

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1 1

59 H07+4.36 0.22" 73 %

50.36 %

2.82

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2 1

35 H07+3.78 0.18" 84 %

55.11 %

0.57 2

1 37 H07+3.69 0.20" 58 %

44.90 %

1.96 2

1 60 H07+3.72 0.16" 56 %

36.50 %

1.59

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No indication exceeded the 0.714" structural screening criteria. SG1 R1 C59 exceeded the first screening criteria for leakage; however with a maximum depth of 73%, it was not considered a challenge to leakage integrity and was not in situ pressure tested.

lisgfsqntu2c9/u2c0 nre report 8

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Past in Situ Tests on U-Bend Axial PWSCC SG Row Column Location Length Max Avg Max Leakage Leakage Depth Depth Volts at SLB at 3dP (apm)

(gpm) 3 1

36 H07+10.26 0.75" 65%

51 %

1.94 0

0 4'

1-84 h07+11.24 0.99*

96 %

74.4 %

5.35 0.079 0.43 2

1 61 H07+3.78 0.36" 100%

80.9 %

3.21 0

0 Condition Monitorina for U-Bend PWSCC All U-Bend PWSCC indications met structural and leakage performance criteria.

Operational Assessment for U-Bend PWSCC For axial U-Bend PWSCC, using the worst growth from the last three outages at Sequoyah determined by the largest growth minus the smallest detected flaw, the largest growth in length is 0.33". Using the smallest indication detected in the EOC-9 inspection,0.16", the worst SON growth rate,0.33", and the sizing uncertainty from ETSS 96703,0.13", an indication left undetected BOC-10 would grow to 0.62" axial length, which is less than the 0.714" structural length criteria.

Assuming the undetected crack grew to 100% this indication would not challenge structural integrity. The largest voltage growth was 2.04 volts. With detection capabilities as low as 0.57 volts EOC-9, a missed indication could grow to 2.61 volts. Assuming the undetected crack grew to 100%, this indication would be bound by prior in situ testing and would not compromis6 'eakage integrity. Typical PWSCC indications at U-Bends at SQN are short (iess than 0.5") with one point at maximum depth. Typical average depths are less than 60% and voltagn are less than 2 volis.

The U-Bend inspection at EOC-9 included 100% of Row 1 and 2 U-Bends with a magnetic bias plus point probe. Given the 100% RPC inspection at EOC-9, the potential undetected indications left in service for Cycle 10 can be expected to be equal to or smaller than that for Cycle 9. Since operating conditions are essentially the same between Cycles 9 and 10 and all EOC-9 indications satisfied tube integrity requirements, it can be expected that all U-Bend I

indications found at EOC-10 will also satisfy performance criteria.

PWSCC TTS l

Twenty-six tubes were predicted to be plugged for PWSCC at TTS based on SON and industry experience. Sixteen PWSCC indications were identified during this inspection. Ten were identified during the U2C8 inspection. These indications are primarily in the central region of the tube bundle as predicted for WEXTEX c,acking.

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c Fivs indications wera identified as circumf rentiel PWSCC ct TTS.

SG Row Column Location Length Max _

Average Max or' Angle Depth Depth Volts 2

8 77 HTS-0.08 25 70%

39.43 %

0.61 3-12 40 HTS-0.11 28*

70%

29.75 %

0.90 3

13 41 HTS-0.20 39a 78 %

40 %

0.85 -

3 19 25 HTS-0.10 25' 50 %

22.16 %

0.52 3

13 31 HTS-0.09 32' 50 %

25.11 %

0.20 The longest and bounding circumferential crack was 39, which is well below the 223 structural screening criteria. The largest maximum voltage was 0.9 volts, which is below the 1.5 volt leakage screening criteria. Therefore, no TTS PWSCC circumferential indications challenge structural or leakage integrity. All circumferential cracks were compared to stabilization criteria, and none s

exceeded the criteria; therefore, no tubes were stabilized.

' A total of 13 indications were identified as axial PWSCC at TTS. The largest and bounding indication was 0.29", which is below the freespan structural screening criteria. No axial indication exceeded the 2 volt screening criteria for leakage integrity. The largest voltage indication was 1.22 volts.

Condition Monitorina for TTS PWSCC All TTS PWSCC indications were below screening criteria; therefore, all indications met structural and leakage performance criteria for EOC-9.

Operational Assessment for TTS PWSCC The growth rate study performed during the past three SQN outages indicates that the worst growth for axial PWSCC at TTS is 0.17". Using the smallest

. indication detected EOC-9 inspection (0.06") and the sizing uncertainty from ETSS 96703 of 0.13", an indication left undetected 80C-10 would only grow to 0.36". Assuming the indication grew to 100% maximum depth, this indication 4

would still not challenge structural integrity. The worst maximum voltage growth from SQN growth data is 0.89 volts. Using the smallest voltage indication detected EOC-9 (0.4) as the detection threshhold, an indication would grow to j

1.29 volts, which would not challenge leakage integrity even if the indication was l

100% through wall.

The growth rate study performed during the past three SQN outages indicates that worst growth for circumferential PWSCC at TTS is 13. Using the smallest detected circumferential indication from U1C9 as detection capability (25 ) and the sizing uncertainty from ETSS 96702 (21.02 ), an indication left undetected BOC-10 would only grow to 59. Assuming the indication grew to 100% through 1/sglsqnlu2c9/u2cs nre report 10 l

wall, this indication would still not challenge structural integrity. The worst maximum voltage growth from SQN growth data is 0.61 volts. Using the smallest voltage indication detected EOC-9 (0.2 volts) es the detection threshold, an indication left undetected BOC-10 would grow to 0.81 volts, which would not challenge leakage integrity'and would be consistent with EOC-9 data.

The PWSCC TTS indications from EOC-9 inspection met tube integrity requirements for condition monitoring, and since operation cycle and conditions will be essentially the same for Cycle 10 and given the 100% inspection, it is L

again expected that any axial PWSCC TTS indication identified EOC-10 will L

rheet tube integrity requirements.

ODSCC TSP A total of 659 axial ODSCC indications were detected in non-dented intersections during the Unit 2 Cycle 9 outage. Generic Letter 95-05 ARC implementation continued in non-dented tubes and a detailed report is included as Attachment 1.

AVB Wear Based on past indications and growth rate data from past outages, three tubes were predicted to be plugged for AVB wear. A total of 97 indications were detected with only two tubes plugged; SG1 R33 C59 with a 40% through wall indication at AV3+.00 and SG1 R34 C53 with a 40% through wall indication at AV2+.00 Cold Lea Wastaae Three tubes were predicted to be plugged for cold leg wastage. A total of 94 indications were detected with 9 indications exceeding the plugging limit of 40%

through wall and plugged.

SG Row Column Location

%TW 1

44 34 C01 +0.14 52 %

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2 31 14 C01-0.14 47 %

2 32 16 C01-0.20 53 %

I 2

37 21 C01-0.11 50%

2 42-31 C01-0.11 47 %

2 44 33-C01 +0.20 -

41 %

3 38 73 C01 +0.03 40 %

4 31 15 C01-0.17 59%

i 4-44 61 C03+0.17 41 %

lisgIsqnlu2celu2c8 nrc report 11 i

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Other Pluaaed Tubes Permeability variation were investigated and compared to previous outage data to ensure that no crack-like indication could be masked. Four tubes were plugged preventively because of permeability variation i

SG Row-Column Location.

Reason for Pluggir.g 1

1 4-83 HTS +0.00 SON has a history of PWSCC at the top of the tubesheet. This PVN is large enough to mask a flaw. Tube was preventively plugged.

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.17 37 HTS +0.26 SQN has a history of PWSCC at the top of the tubesheet. -This PVN is large enough to mask a flaw. Tube was preventively plugged.

2 40 34 H05-2.0 SON has a history of ODSCC at tube support plates, This PVN is l

large enough to mask a flaw.

Tube was preventively plugged.

3 13 61 H03+0.73 SON has a history of ODSCC at 1

tube support plates. This PVN is large enough to mask a flaw.

Tube was preventively plugged.

All indications characterized as manufacturing burnish mark by bobbin coil probe

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were investigated and compared to previous outage data. SG2 R12 C35 was '

i plugged because the signal at HTS +0.17 had changed when compared with previous data. SQN steam generators have no history of IGA and the indication does not appear to be crack-like by plus point probe. This tube was plugged preventively.

IIsotsqntunestuace are report 12

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1 SECONDARY SIDE INSPECTION SCOPE AND RESULTS Cracked Support Plate Indications Cracked tube support plate indications (CSis) are indications of cracks in the tube support plates and not necessarily indicative of tube degradation. These indications are detected during automated analysis of bobbin coil data. They are traced back to history and all have been tested with rotating coil to ensure that no active damage mechanism exists.

SON unit 2 steam generators do not have extensive support plate cracking.

Therefore, design basis function of the support plate tias not been lost. There is also no evidence of wrapper drop or wrapper degradation.

Upper Internals inspection An upper internals inspection was performed on two steam generators and no degradation was detected.

Sludae Lancina Sludge lancing was performed on all four steam generators: 34 pounds of sludge was removed from SG1,44 pounds frorn SG2,57.5 pounds from SG3, and 39 pounds from SG4. A post-lance inspection confirmed that the top of the tubesheet on all generators was clean.

Foreian Obiect Search and Retrieval (FOSAR)

Foreign object search and retrieval was completed on all four steam generators and all identified foreign objects were retrieved.

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p CONCLUSIONS The NDE testing completed on the SON Unit 2 SGs and plugging of defective tubes met the Technical Specification and ASME Section XI code requirements I

for Inservice inspection; therefore, each SG has been demonstrated operable.

Alternate Plugging Criteria was implemented in accordance with the Unit 2 Technical Specification License Condition 2.C(8)(b).

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Based on the criteria of 10 CFR 50.59 and utilizing the criteria of Draft i

l Regulatory Guide 1.121, TVA concludes that the integrity of the Sequoyah Nuclear Plant Unit 1 steam generato s was maintained during Cycle 9 and will be maintained through full cycle 10, and does not represent an unreviewed safety l

question.

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rz Tcbl31 APPENDIX A CLASSIFICATION OF INSPECTION RESULTS SEQUOYAH NUCLEAR PLANT UNIT 2 CYCLE 9 SG INSPECTION PAGE 1 OF 2 initial Eddy Current Exam 191 E_Q2 SG3 SG4 Full Length Bobbin Coil 3357 3297 3330 3366 U-Bend Plus Point 171 157 165 181 Top of Tubesheet RPC 3357 3297 3330 3366 Dented TSP Plus Point 71 38 55 7

Freespan Ding Plus Point 19 30 24 7

Diagnostic Plus Point 21 28 20 36 Expansion SG1 HG2 SG3 SG4

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Full Length Bobbin Coil 0

0 0

0 U-Bend Plus Point 0

0 0

0 Top of Tubesheet RPC 0

0 0

0 Dented TSP Plus Point 0

0 0

0 Freespan Ding Plus Point 0

0 0

0 Total Exams Completed Total Tubes Examined 3357 3297 3330 3366 Indications SG1 BG2 SG3 EQ4 AVB \\Near 18 40 24 15 Cold Leg Wastage 19 32 25 18 PWSCC HTS Axial 2

5 8

1 PWSCC HTS Circ 0

1 4

0 ODSCC TSP Axial 69 67 118 410 U-Bend PWSCC Axial 1

3 0

0 Total Indications 109 148 183 444 Pluaaina Status SG1 EQ2 SG3 SG4 Previously Plugged Tubes 31 91 58 22 Pluaaed Current Outaae by Damaae Mechanism AVB Wear 2

0 0

0 Cold Leg Wastage 1

5 1

2 PWSCC HTS Axial 2

5 3

1 PWSCC HTi> Circ 0

1 4

0 ODSCC TSP Axial 0

0 1

0 U-Bend PWSCC Axial 1

3 0

0 Preventively Plugged 2

2 1

0 Total 39 107 68 25

CLASSIFICATION OF INSPECTION RESULTS SEQUOYAH NUCLEAR PLANT UNIT 2 CYCLE 9 SG INSPECTION PAGE 2 OF 2 Classification of Inspection Results SG1 SG2 SG3 SG4 l

Full Length Bobbin Coil C-2 C-2 C-2 C-2 U-Bend Plus Point C-2 C-3 C-1 C-1 Top of Tubesheet RPC C-2 C-2 C-2 C-2 Dented Plus Point C-1 C-1 C-1 C-1 Freespan Ding Plus Point C-1 C-1 C-1 C-1 Inspection Inspection Results Classdication Category C1 Less than 5% of the total tubes inspected are degraded tubes and none of the inspected tubes are defective.

C-2 One or more tubes, but not more than 1% of the total tubes inspected are defective, or between 5 and 10% of the total tubes inspected are degraded tubes C-3 More than 10% of the total tubes inspected are degraded tubes or more than 1% of the inspected tubes are defective.

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Table 2 Resolution of Defective Tubes and All Service-Induced Wall Loss Indications SON Unit 2 Cvele 9 Date: O M un-99 g,G ROW COL INJQ LOCATION CHARACTERlZATION RESOLUTION G

Sample: 0 l

1 1

59 SAI H07+4.36 PWSCC UBEND AXtAL PLUG 1

1 76 SAI HTS.47 PWSCC HTS AXIAL PLUG 1

2 12 PI H02+.03 ODSCC TSP AXIAL (1) 1 3

16 Pl H01.09 ODSCC TSP AXIAL (1) 1 3

34 Pl H01 +.03 ODSCC TSP AXIAL (1) 1 3

46 Pl H01 +.09 ODSCC TSP AXIAL (1) 1 3

47 Pl H02+.14 ODSCC TSP AXlAL (1) 1 4

72 8

C01 +.03 C/L WASTAGE (1) 1 4

83 PVN HTS +.00 PVN PREVENTIVE PLUG PLUG 1

5 7

Pl H01 +.00 ODSCC TSP AXIAL (1) 1 5

11 Pl H01 +.03 ODSCC TSP AXIAL (1) 1 5

13 Pl H02.03 ODSCC TSP AXIAL (1) 1 5

26 Pl H02+.00 ODSCC TSP AXIAL (1) 1 5

43 Pl H02+.08 ODSCC TSP AXIAL (1) 1 5

46 PI H01+.06 ODSCC TSP AXIAL (1) 1 6

4 Pl H01 +.03 ODSCC TSP AXIAL (1) i 1

6 9

17 C01 +.58 C/L WASTAGE (1) 1 6

35 Pl H01.06 ODSCC TSP AXtAL (1) 1 8

3 Pl H02+.06 ODSCC TSP AXtAL (1) 1 9

8 5

C01.03 C/L WASTAGE (1) 1 9

39 Pl H01+.00 ODSCC TSP AXIAL (1) 1 10 18 Pl C01.03 ODSCC TSP AXlAL (1) 1 10 47 PI H02+.03 ODSCC TSP AXlAL (1) 1 10 77 Pl H04.06 ODSCC TSP AXlAL (1) 1 11 61 PI H02+.09 ODSCC TSP AXlAL (1) 1 13 62 PI H05+.09 ODSCC TSP AXIAL (1) 1 14 11 Pi H03+.03 ODSCC TSP AXIAL (1) 1 16 86 Pl H04.03 ODSCC TSP AXIAL (1) l 1

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4 Resolution of Defective Tubes and All Service-induced Wall Loss Indications SQN Unit 2 Cycle 9 Date: 04Jun-99 SG ROW COL INN.D LOCATION CHARACTERlZATION RESOLUTION 1

17 4

Pl H01 +.03 ODSCC TSP AXIAL (1) 1 17 4

PI H03.03 ODSCC TSP AXIAL (1) 1 17 4

P:

H04+.03 ODSCC TSP AX1AL (1) l 1

17 37 PVN HTS +.26 PVN PREVENTIVE PLUG PLUG 1

17 50 Pl H05+.14 ODSCC TSP AXIAL (1) 1 17 82 Pi H05+.00 ODSCC TSP AXIAL (1) 1 18 49 Pl H03+.06 ODSCC TSP AXlAL (1) 1 19 38 31 AV2+.00 AVB WEAR (1) 1 19 66 PI H01 +.08 ODSCC TSP AXIAL (1) 1 19 74 Pl H02+.09 ODSCC TSP AXtAL (1) 1 20 58 Pl H01 +.06 ODSCC TSP AX1AL (1) 1 20 58 PI H07+.00 ODSCC TSP AXIAL (1) 1 20 65 Pl H02+.00 ODSCC TSP AXIAL (1) 1 20 78 PI H04+.00 ODSCC TSP AXIAL (1) 1 21 78 Pl H02.03 ODSCC TSP AXIAL (1) 1 22 46 Pl H04+.09 ODSCC TSP AXIAL (1) 1 23 73 1

C05+.00 C/L WASTAGE (1) 1 24 33 Pl H02+.09 ODSCC TSP AXtAL (1) j I

1 25 8

PI H01 03 ODSCC TSP AXIAL (1) 1 25 18 Pl H05+.03 ODSCC TSP AXIAL (1) 1 25 37 Pi H01 +.03 ODSCC TSP AXfAL (1) 1 26 15 PI H02+.03 ODSCC TSP AXlAL (1) 1 27 13 PI H02+.00 ODSCC TSP AXIAL (1) 1 27 31 24 AV2+.00 AVB WEAR (1) 1 27 31 23 AV3+.00 AVB WEAR (1) 1 27 48 Pl H02+.03 ODSCC TSP AXIAL (1) 1 28 26 Pl H02+.06 ODSCC TSP AXIAL (1) 1 28 43 Pl H02+.06 ODSCC TSP AXIAL (1) 1 28 45 Pl H02+.00 ODSCC TSP AXIAL (1) 2

Resolution of Defective Tubes and All Service-induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 04Jun-99 l

3.G ROW COL IND LOCATION CHARACTERIZATION RESOLUTION 1

28 77 Pl H02+.03 ODSCC TSP AXIAL (1) l 1

29 52 PI H02+.06 ODSCC TSP AXIAL (1) 1 30 24 18 C04+.03 C/L WASTAGE (1) 1 30 41 Pl H02.11 ODSCC TSP AXIAL (1) 1 30 80 Pl H06+.06 ODSCC TSP AXIAL (1) 1 30 82 Pl H02.03 ODSCC TSP AXIAL (1) 1 30 83 36 C01+.23 C/L WASTAGE (1) 1 31 79 21 C01.17 C/L WASTAGE (1) 1 32 52 Pl H02+.09 ODSCC TSP AXIAL (1) 1 32 64 29 AV2+.09 AVB WEAR (1) 1 32 64 30 AV3 +.31 AVB WEAR (1) 1 32 64 26 AV4 +.00 AVB WEAR (1) 1 32 68 Pl H01 +.06 ODSCC TSP AXIAL (1) 1 33 51 27 AV2+.00 AVB WEAR (1) 1 33 51 23 AV3.03 AVB WEAR (1) 1 33 59 35 AV1 +.00 AVB WEAR l

1 33 59 31 AV2+.00 AVB WEAR 1

33 59 40 AV3+.00 AVB WEAR PLUG 1

33 59 38 AV4 +.00 AVB WEAR 1

33 75 Pl H05+.09 ODSCC TSP AXIAL (1) 1 34 19 21 C01 +.12 C/L WASTAGE (1) l j

1 34 53 40 AV2+.00 AVB WEAR PLUG 1

34 53 37 AV3+.00 AVB WEAR 1

35 23 PI H01+.06 ODSCC TSP AXIAL (1) 1 35 30 Pi H01 +.00 ODSCC TSP AXIAL (1) 1 35 33 Pl H02+.11 ODSCC TSP AXIAL (1) l 1

35 47 Pl H02+.03 ODSCC TSP AXIAL (1) 1 36 33 sal HTS.58 PWSCC HTS AXIAL PLUG 1

36 39 Pi H02+.03 ODSCC TSP AXIAL (1) 3

1 Resolution of Defective Tubes and All Service-Induced Wall Loss Indications SQN Unit 2 Cycle 9 Date: 04Jun-99 3.G ROW CA LND LOCATION CHARACTERIZATION RESOLUTION ND l

1 36 42 PI H02 09 ODSCC TSP AXIAL (1) 1 36 62 PI H02+.06 ODSCC TSP AXfAL (1) 1 ST 62 Pl H03.03 ODSCC TSP AXtAL (1) 1 36 66 24 AV3.86 AVB WEAR (1) 1 37 60 PI H05+.06 ODSCC TSP AXIAL (1) l 1

37 61 Pl H02+.09 ODSCC TSP AXfAL (1) 1 37 61 Pl H03+.14 ODSCC TSP AXIAL (1) 1 37 62 21 AV2.66 AVB WEAR (1) 1 37 62 33 AV3+.00 AVB WEAR (1) 1 39 45 24 AV2+.00 AVB WEAR (1) l 1

40 69 Pl H01 +.00 ODSCC TSP AXIAL (1) 1 40 69 Pl H03+,12 ODSCC TSP AXIAL (1) 1 42 30 16 C01 +.23 C/L WASTAGE (1) 1 43 31 13 C01 +.11 C/L WASTAGE (1) 1 43 60 22 C01 +.03 C/L WASTAGE (1) 1 43 61 37 C01.26 C/L WASTAGE (1) 1 43 62 22 C01.03 C/L WASTAGE (1) 1 44 34 52 C01 +.14 C/L WASTAGE PLUG 1

44 36 23 C01+.23 C/L WASTAGE (1) 1 44 42 Pl H02+.03 ODSCC TSP AXIAL (1) 1 44 45 31 CO2+.09 C/L WASTAGE (1) 1 44 58 22 C01.23 C/L WASTAGE (1) 1 45 47 Pl H04.03 ODSCC TSP AX1AL (1) 1 46 50 21 C01 +.17 C/L WASTAGE (1)

I 1

46 53 18 C01.09 C/L WASTAGE (1)

I (1) Retest Future Outage 4

l Resolution of Defective Tubes and All Service-induced Wall Loss Indications SQN Unit 2 Cycle 9 Date: 04Jun-99 EG ROW COL LQQ LOCATION CHARACTERIZATION RESOLUTION Sample: 0 2

1 35 SAI H07+3.73 PWSCC UBEND AX1AL PLUG 2

1 37 sal H07+3.58 PWSCC UBEND AXIAL PLUG 2

1 60 sal H07+3.85 PWSCC UBEND AXIAL PLUG 2

2 20 sal HTS.79 PWSCC HTS AXIAL PLUG 2

2 49 Pl H01 +.00 ODSCC TSP AXlAL (1) 2 2

55 Pl H02+.00 ODSCC TSP AXlAL (1) 2 2

73 PI H01.20 ODSCC TSP AXIAL (1) 2 2

76 Pl H02.22 ODSCC TSP AXIAL (1)

I 2

2 83 Pl H01.20 ODSCC TSP AXIAL (1) 2 2

84 Pl H01 +.03 ODSCC TSP AXIAL (1) 1 2

2 85 Pl H01.14 ODSCC TSP AX!AL (1) 2 2

85 Pl H02.11 ODSCC TSP AXIAL (1) 2 3

42 Pl H02+.00 ODSCC TSP AXIAL (1) 2 3

72 Pl H01 +.03 ODSCC TSP AXIAL (1) 2 4

26 Pl H02+.03 ODSCC TSP AXIAL (1) 2 4

55 PI H02.14 ODSCC TSP AXIAL 2

4 55 SAI HTS-1.12 PWSCC HTS AXIAL PLUG i

2 6

40 PI H01 +.11 ODSCC TSP AXIAL (1)

I 2

6 43 Pl H02+.11 ODSCC TSP AXIAL (1) 2 6

93 26 C01 +.17 C/L WASTAGE (1)

I l

2 7

4 Pl H01 +.08 ODSCC TSP AXlAL (1) 1 I

1 Resolution of Dr.fective Tubes and All Service-Induced Wall Loss Indications l

SON Unit 2 Cycle 9 Date: 04Jun-99 3G ROW COL LND LOCATION CHARACTERIZATION RESOLUTION 2

7 4

Pl H02+.11 ODSCC TSP AXIAL (1) 2 8

44 PI H01 +.06 ODSCC TSP AXlAL (1) 2 8

55 SAI HTS.45 PWSCC HTS AXIAL PLUG 2

8 77 SCI HTS +.00 PWSCC HTS CIRC PLUG 2

8 92 PI H01+.00 ODSCC TSP AXlAL (1) 2 9

57 Pl H02.06 ODSCC TSP AXIAL (1) 2 9

72 Pi H02.08 ODSCC TSP AXIAL (1) l 2

10 39 Pl H01 +.03 ODSCC TSP AXIAL (1) j l

2 12 35 Pl H01+.08 ODSCC TSP AXIAL 2

12 35 SVI HTS +.17 BUFF MARK PLUG 2

12 44 Pl H02 06 ODSCC TSP AXIAL (1) 2 12 71 SAI HTS.17 PWSCC HTS AXIAL PLUG 2

13 21 Pl H02.03 ODSCC TSP AX1AL (1) l 2

14 48 Pl H02+.03 ODSCC TSP AXlAL (1) 2 14 84 Pl H01 +.06 ODSCC TSP AXIAL (1) 2 15 33 Pl H01 +.06 ODSCC TSP AXIAL (1) 2 15 54 Pl H02+.00 ODSCC TSP AXIAL (1) j l

2 15 89 Pl H01.03 ODSCC TSP AXIAL (1) 2 17 28 26 AV1 +.24 AVB WEAR (1) 2 17 28 36 AV3+.00 AVB WEAR (1) 2 17 64 28 AV1 +.00 AVB WEAR (1) 2 17 64 30 AV2+.00 AVB WEAR (1) 2 1

l Resolution of Defective Tubes and All Service-Induced Wall Loss Indications SON Unit 2 Cycle 9 Date: O A/un-99 HG ROW COL M

LOCATig CHARACTERIZATION RESOLUTION 2

17 64 32 AV3+.00 AVB WEAR (1) 2 18 42 24 AV2+.00 AVB WEAR (2

2 18 72 26 AV3 +.00 AVB WEAR (1) 2 19 6

6 C01 +.00 C/L WASTAGE (1) 2 19 28 28 AV1 +.00 AVB WEAR (1) 2 20 52 Pl H01 +.06 ODSCC TSP AXIAL (1) 2 20 58 Pl H01 +.03 ODSCC TSP AXIAL (1)

I 2

21 53 Pl H05+.09 ODSCC TSP AXIAL (1) 2 22 30 Pi H02+.03 ODSCC TSP AXIAL (1)

{

2 22 41 14 AV2+.18 AVB WEAR (2) 2 22 76 sal HTS-1.67 PWSCC HTS AXIAL PLUG 2

23 44 PI H01.08 ODSCC TSP AXlAL (1) 2 23 49 Pl H01 +.03 ODSCC TSP AXIAL (1) 2 23 60 34 AV2.03 AVB WEAR (1) 2 09 28 AV3+.00 AVB WEAR (1) 2 24 8

6 CO..14 C/L WASTAGE (1) 2 24 9

17 C01 +.14 C/L WASTAGE (1) 2 24 37 Pl H02+.00 ODSCC TSP AXIAL (1) 2 24 61 27 AV1+.21 AVB WEAR (1) 2 24 61 39 AV2+.00 AVB WEAR (1) 2 24 61 31 AV4.17 AVB WEAR (1) 2 24 63 35 AV2+.00 AVB WEAR (1) 3

Resolution of Defective Tubes and All Service-Induced Wall Loss Indications SQN Unit 2 Cycle 9 Date: 04Jun-99 EG ROW COL IND LOCATION CHARACTERIZATION RESOLUTION 2

24 87 Pl H01 +.08 ODSCC TSP AXIAL (1) 2 25 72 PI H02+.00 ODSCC TSP AXIAL (1) 2 26 70 30 AV3+.00 AVB WEAR (1) 2 27 24 PI H04.03 ODSCC TSP AXIAL (1) j 2

27 65 32 AV2+.00 AVB WEAR (1) i 2

27 65 38 AV3+.00 AVB WEAR (1) 2 27 84 Pl H01 +.00 ODSCC TSP AXIAL (1) j 2

28 11 21 C01.14 C/L WASTAGE (1) 2 28 12 22 CO2 14 C/L WASTAGE (1) 2 28 17 Pl H02.06 ODSCC TSP AXIAL (1) j 2

28 69 PI H02.06 ODSCC TSP AXIAL (1) 2 29 16 Pl H01 +.11 ODSCC TSP AXIAL (1)

]

2 29 16 Pl H02+.03 ODSCC TSP AXIAL (1) 2 29 32 34 AV2.17 AVB WEAR (1) 2 29 32 30 AV3+.27 AVB WEAR (1) 2 29 32 25 AV4+.00 AVB WEAR (1) 2 29 37 20 AV2+.00 AVB WEAR (1) l 2

29 37 19 AV3+.20 AVB WEAR (1) 2 29 39 22 AV2+.00 AVB WEAR (1) 2 29 39 22 AV3+.00 AVB WEAR (1) 2 30 55 Pl H01 +.14 ODSCC TSP AXIAL (1) 2 30 55 Pl H05+.03 ODSCC TSP AXIAL (1) l 1

l I

l

c Resolution of Defective Tubes and All Service Induced Wall Loss Indications SQN Unit 2 Cycle 9 Date: 04Jun-99 32 ROW COL LhLD k.Q7ATION CHARACTERIZATION RESOLUTION 2

30 68 Pi H02.03 ODSCC TSP AXIAL (1) 2 30 74 Pl H02+.03 ODSCC TSP AXIAL (1) 2 30 77 Pl H02+.08 ODSCC TSP AXIAL (1) 2 30 81 Pl H01 +.03 ODSCC TSP AXlAL (1) 2 31 14 47 C01.14 C/L WASTAGE PLUG 2

31 38 Pl H04+.06 ODSCC TSP AXIAL (1) 2 31 70 PI H01 +.14 ODSCC TSP AXtAL (1) 2 31 70 Pl H02.03 ODSCC TSP AXIAL (1) 2 32 16 SVI C01.20 C/L WASTAGE PLUG 2

32 20 Pl H01 +.03 ODSCC TSP AXlAL (1) 2 32 20 Pl H02+.00 ODSCC TSP AXIAL (1) 2 32 56 27 AV1+.06 AVB WEAR (1) 2 32 56 28 A'./2-t'3 AVB WEAR (1) 2 32 56 21 AVd+.09 AVB WEAR (1) 2 32 62 28 AV2+.00 AVB WEAR (1) 2 32 62 26 AV3+.00 AVB WEAR (1) 2 33 49 29 AV1 +.00 AVB WEAR (1) 2 33 49 38 AV2+.09 AVB WEAR (1) 2 33 49 38 AV3+.03 AVB WEAR (1) 2 33 49 21 AV4.17 AVB WEAR (1) 2 33 50 Pl H07+.03 ODSCC TSP AXIAL (1) 2 33 62 30 AV3+.00 AVB WEAR (1) 5

l Resolution of Defective Tubes and All Service-Induced Wall Loss Indications SON Unit 2 Cvele 9 Date: OMw99 EG ROW COL LN.Q LOCATION CHARACTERIZATION RESOLUTION j

2 33 78 34 CO2.17 C/L WASTAGE (1) 2 34 17 34 C01.06 C/L WASTAGE (1) 2 34 17 14 CO2.26 C/L WASTAGE (1) 2 34 78 15 CO2.14 C/L WASTAGE (1) 2 35 55 Pl H02+.03 ODSCC TSP AXfAL (1) 2 36 18 26 C01 +.17 C/L WASTAGE (1) 2 36 20 19 C01 11 C/L WASTAGE (1) 2 36 42 PI H02+.03 ODSCC TSP AXIAL (1) 2 36 71 Pl H01 +.00 ODSCC TSP AXIAL (1) 2 36 74 Pl H02+.00 ODSCC TSP AXIAL (1) 2 36 76 7

CO2.14 C/L WASTAGE (1) 2 37 20 Pl H01+.03 ODSCC TSP AXIAL (1) 2 37 21 50 C01.11 C/L WASTAGE PLUG 2

38 22 24 C03+.08 C/L WASTAGE (1) 2 38 24 34 C01 +.23 C/L WASTAGE (1) 2 38 43 22 AV3.11 AVB WEAR (1) 2 38 45 Pl H02+.03 ODSCC TSP AXlAL (1) 2 38 45 Pl H03+.03 ODSCC TSP AXIAL (1) 2 38 46 25 AV3.14 AVB WEAR (1) 2 38 46 25 AV4.03 AVB WEAR (1) 2 39 49 21 AV3.17 AVB WEAR (1) 2 39 49 22 AV4.14

' AVB WEAR (1) 6

Resolution of Defective Tubes and All Service-induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 0 Alun-99 3.G ROW COL IND LOCATION CHARACTERIZATION RESOLUTION 2

40 24 24 C01.03 C/L WASTAGE (1) 2 40 27 14 C01.14 C/L WASTAGE (1) 2 40 34 PVN H05-2.00 PVN PREVENTIVE PLUG PLUG 2

40 67 10 CO2+.14 C/L WASTAGE (1) 2 41 54 Pl H03+.06 ODSCC TSP AXIAL (1) 2 42 29 3

C01 +.11 C/L WASTAGE (1) 2 42 31 47 C01.11 C/L WASTAGE PLUG 2

42 61 PI H01 +.06 ODSCC TSP AXIAL (1) 2 42 64 15 C01 +.17 C/L WASTAGE (1) 2 42 66 13 C01 +.00 C/L WASTAGE (1) 2 43 32 23 C01+.23 C/L WASTAGE (1) 2 43 38 PI H02+.00 ODSCC TSP AXIAL (1) 2 43 49 PI H02+.08 ODSCC TSP AXIAL (1) 2 43 59 27 C03+.21 C/L WASTAGE (1) 2 43 63 23 C01 +.03 C/L WASTAGE (1) 2 44 33 41 C01 +.20 C/L WASTAGE PLUG 2

44 39 24 CO2.11 C/L WASTAGE (1) 2 45 40 9

C01.09 C/L WASTAGE (1) 2 45 48 13 C01 +.11 C/L WASTAGE (1)

(1) Retest Future Outage 7

l l

l Resolution of Defective Tubes and All Service-induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 0A/un-99 HG_ ROW COL l@

LOCATION CHARACTERIZATION RESOLUTION Sample: 0 3

2 16 Pl H01 06 ODSCC TSP AX1AL (1) 3 2

29 Pl H03.03 ODSCC TSP AXIAL (1) 3 2

31 Pl H03.06 ODSCC TSP AXtAL (1) 3 2

38 Pi H02.08 ODSCC TSP AXIAL (1) 3 2

39 Pl H02+.00 ODSCC TSP AXlAL (1) 3 2

44 Pl C01 +.05 ODSCC TSP AXIAL (1) 3 3

10 Pl H01 +.03 ODSCC TSP AXIAL (1) 3 4

50 PI H02.08 ODSCC TSP AXIAL (1) 3 4

50 Pl H05+.06 ODSCC TSP AXIAL (1) 3 5

1 5

C01+.05 C/L WASTAGE (1) f5 3

4 Pl H01 +.19 ODSCC TSP AXIAL (1) 3 5

8 26 C01 +.09 C/L WASTAGE (1) 3 5

19 Pl H01 +.18 ODSCC TSP AXIAL (1) 3 5

22 PI H01 +.08 ODSCC TSP AXIAL (1) 3 5

58 36 C01 +.00 C/L WASTAGE (1) 3 5

60 P!

C01.05 ODSCC TSP AX1AL (1) 3 5

60 Pl C01.08 ODSCC TSP AXIAL (1) 3 6

10 Pl H01 +.15 ODSCC TSP AXlAL (1) 3 6

33 Pl H03+.11 ODSCC TSP AXIAL (1) 3 6

38 PI H01 +.11 ODSCC TSP AXIAL (1) 3 6

48 PI H01 +.00 ODSCC TSP AXIAL (1) 3 7

1 21 C01 +.16 C/L WASTAGE (1) 3 7

2 6

CO2+.11 C/L WASTAGE (1) 3 7

7 Pl H01.11 ODSCC TSP AXIAL (1) 3 7

14 Pl H01+.00 ODSCC TSP AXIAL (1) 3 7

14 Pi H02+.03 ODSCC TSP AXIAL (1) 3 7

60 Pl H01.17 ODSCC TSP AXtAL (1) 3 7

71 P!

H02+.03 ODSCC TSP AXIAL (1) 1

(

Resolution of Defective Tubes and All Service-Induced Wall Loss Indications I

SQN Unit 2 Cycle 9 Date: OMun-99 SG ROW COL IND LOCATION CHARACTERIZATION RESOLUTION i

3 7

72 Pl H02.03 ODSCC TSP AXIAL (1)

)

3 7

92 Pl H03.06 ODSCC TSP AXfAL (1) 3 8

56 Pl H01+.08 ODSCC TSP AXIAL (1) 3 8

57 Pl H04.08 ODSCC TSP AXIAL (1) 3 8

57 Pl H04.11 ODSCC TSP AXlAL (1) 3 8

58 Pl H01.03 ODSCC TSP AXIAL (1) 3 8

63 Pl H01.08 ODSCC TSP AXlAL (1) 3 8

64 Pl H01 +.00 ODSCC TSP AXIAL (1) 3 8

69 Pl H01 +.05 ODSCC TSP AXtAL (1) j 3

9 7

Pl H01 +.11 ODSCC TSP AXIAL (1) 3 9

11 Pl H01 +.13 ODSCC TSP AXIAL (1) 3 9

40 Pl H02+.03 ODSCC TSP AXfAL (1) 3 9

46 Pl H04.11 ODSCC TSP AXIAL (1) 3 9

48 Pl H01 +.05 ODSCC TSP AXIAL (1) 3 9

83 Pl H05+.11 ODSCC TSP AXIAL (1) 3 10 2

PI H04.03 ODSCC TSP AXIAL (1) 3 10 5

Pl H01 +.05 ODSCC TSP AXIAL (1) 3 10 91 Pl H02.03 ODSCC TSP AXIAL (1) 3 10 93 33 C01 +.05 C/L WASTAGE (1) 3 10 93 27 C03+.08 C/L WASTAGE (1) 3 11 11 PI H01 +.11 ODSCC TSP AXIAL (1) 3 11 16 Pl H06+.06 ODSCC TSP AXIAL (1) 3 11 37 Pl H01 +.16 ODSCC TSP AXIAL (1) 3 12 12 Pl H01 +.08 ODSCC TSP AXlAL (1) 3 12 35 Pi H01 +.03 ODSCC TSP AXIAL (1) 3 12 40 SCI HTS +.02 PWSCC HTS CIRC PLUG 3

13 7

Pl H06+.03 ODSCC TSP AXlAL (1) 3 13 24 Pl H02+.05 ODSCC TSP AXIAL (1) 3 13 31 Pl H01 +.05 ODSCC TSP AXIAL 1

2

]

Resolution of Defective Tubes and All Service-induced Wall Loss Indications j

SQN Unit 2 Cycle 9 Date: 04-Jun-99 SG ROW COL IND LOCATION CHARACTERIZATION RESOLUTION 3

13 31 SCI HTS.20 PWSCC HTS CIRC PLUG 3

13 36 Pl H01+.00 ODSCC TSP AXIAL (1) 3 13 41 SCI HTS.20 PWSCC HTS CIRC PLUG 3

13 53 Pl H01.03 ODSCC TSP AXIAL (1) 3 13 61 PVN H03+.73 PVN PREVENTIVELY PLUG PLUG

)

3 14 3

13 C01.03 C/L WASTAGE (1) 3 14 14 Pl H01 +.14 ODSCC TSP AXIAL (1) 3 14 41 PI H02+.11 ODSCC TSP AXIAL (1) 3 15 3

PI H01 +.06 ODSCC TSP AXIAL (1) 3 15 3

Pl H02+.06 ODSCC TSP AXIAL (1) 3 15 15 PI H01 +.17 ODSCC TSP AXIAL (1) 3 15 69 Pl H05+.00 ODSCC TSP AXIAL (1) 3 16 4

Pl H01+.06 ODSCC TSP AXIAL (1) 3 16 4

Pl H02+.12 ODSCC TSP AXIAL (1) 3 16 5

Pl H04+.00 ODSCC TSP AXIAL (1) 3 16 11 PI H05.15 ODSCC TSP AXIAL (1) 3 16 41 PI H01+.03 ODSCC TSP AXIAL (1) 3 16 54 PI H01+.09 ODSCC TSP AXIAL (1) 3 17 71 PI H03.03 ODSCC TSP AXIAL (1) 3 18 18 Pl H01 +.09 ODSCC TSP AXIAL (1) 3 18 30 18 AV2+.00 AVB WEAR (1) 3 18 35 P1 H01+.00 ODSCC TSP AXIAL (1) 3 18 38 PI H01.03 ODSCC TSP AXIAL (1) 3 18 49 Pl H01+.00 ODSCC TSP AXIAL (1) 3 19 13 Pl H01.03 ODSCC TSP AXIAL (1) 3 19 25 SCI HTS.12 PWSCC HTS CIRC PLUG 3

19 64 18 AV2+.00 AVB WEAR (1) 3 19 64 8

AV3+.15 AVB WEAR (1) 3 20 12 Pl H01 +.00 ODSCC TSP AXIAL (1) 3

p l

Resolution of Defective Tubes and All Service-induced Wall Loss Indications SQN Unit 2 Cycle 9 Date: OJJun-99 SG ROW COk IND LOCATION CHARACTERIZATION RESOLUTION 3

20 29 Pl H01+.00 ODSCC TSP AXIAL (1) l 3

20 30 Pl H01+.03 ODSCC TSP AXIAL (1) l 3

20 32 PI H01 +.11 ODSCC TSP AXIAL (1) 3 20 79 Pl H02.07 ODSCC TSP AX1AL (1) 3 20 80 Pl H03 05 ODSCC TSP AX!AL (1) 3 21 24 Pl H01.03 ODSCC TSP AXlAL (1) 3 21 81 Pl H02+.08 ODSCC TSP AXIAL (1) 3 21 84 Pl H04+.05 ODSCC TSP AXIAL (1) 3 22 36 SAI HTS.21 PWSCC HTS AXIAL PLUG 3

23 23 sal HTS.14 PWSCC HTS AXIAL PLUG 3

23 44 Pl H01.09 ODSCC TSP AXIAL (1) 3 23 55 11 AV1 +.00 AVB WEAR (1) 3 23 55 15 AV3+.00 AVB WEAR (1) 3 23 55 14 AV4+.00 AVB WEAR (1) 3 24 12 Pl H01 +.03 ODSCC TSP AXIAL (1) 3 24 16 PI H01 +.09 ODSCC TSP AXIAL (1) 3 24 24 PI H01 +.03 ODSCC TSP AXlAL (1) l 3

24 25 Pl H01 +.09 ODSCC TSP AXIAL (1) 3 24 29 Pl H01 +.03 ODSCC TSP AXIAL (1) 3 25 8

PI H01 +.14 ODSCC TSP AXIAL (1) 3 25 9

37 C01 +.03 C/L WASTAGE (1) 3 25 18 Pl H01 +.09 ODSCC TSP AXIAL (1) 3 26 9

Pl H01 +.00 ODSCC TSP AXIAL (1) 3 26 23 PI H01 +.20 ODSCC TSP AXIAL (1) 3 26 35 Pl H01 +.00 ODSCC TSP AXIAL (1) 3 27 26 Pl H02+ 09 ODSCC TSP AXIAL (1) 3 27 30 Pl H02+.14 ODSCC TSP AXIAL (1) 3 27 67 PI H02+.11 ODSCC TSP AXIAL (1) l 3

27 68 Pl H02+.09 ODSCC TSP AXIAL (1) 1 4

/

l l

Resolution of Defective Tubes and All Service-induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 0./Jun-99 1

3G_ ROW COL LN_D LOCATION CHARACTERIZATION RESOLUTION i

D 3

28 45 17 AV1+.00 AVB WEAR (1) 3 28 45 20 AV2+.06 AVB WEAR (1) 3 28 45 21 AV3+.00 AVB WEAR (1) 3 30 23 Pl H01 +.06 ODSCC TSP AXlAL (1) 3 30 42 Pl H02.03 ODSCC TSP AXIAL (1) 3 30 69 PI H06+.06 ODSCC TSP AXIAL (1) 3 30 83 11 C01.21 C/L WASTAGE (1) 3 30 83 39 C02+.03 C/L WASTAGE (1) 3 31 33 SAI HTS-1.16 PWSCC HTS AXIAL PLUG 3

31 33 sal HTS-1.18 PWSCC HTS AXIAL PLUG l

3 31 33 sal HTS-2.62 PWSCC HTS AXIAL PLUG 3

31 33 SAI HTS-2.73 PWSCC HTS AXIAL PLUG 3

31 33 SAI HTS-2.82 PWSCC HTS AXIAL PLUG 3

31 33 sal HTS-2.94 PWSCC HTS AXlAL PLUG l

3 31 81 Pl H05+.16 ODSCC TSP AXIAL (1) 3 31 82 33 C01.03 C/L WASTAGE (1) 3 32 20 Pl H01 +.09 ODSCC TSP AXIAL (1) l 3

32 24 30 AV1 +.00 AVB WEAR (1) 3 32 40 19 AV3+.03 AVB WEAR (1) 3 32 42 PI H02+.00 ODSCC TSP AXIAL (1) 3 33 25 Pl H04 +.00 ODSCC TSP AXfAL (1) 3 33 27 PI H01 +.14 ODSCC TSP AXIAL (1) 3 33 49 Pl H03+.09 ODSCC TSP AXIAL (1) 3 33 61 13 AV1 +.03 AVB WEAR (1) 3 33 61 17 AV2+.00 AVB WEAR (1) 3 33 61 16 AV3+.00 AVB WEAR (1) l 3

33 67 Pl H04+.09 ODSCC TSP AXIAL (1) 3 33 79 28 C01 +.00 C/L WASTAGE (1) 3 34 16 21 C01.12 C/L WASTAGE (1)

.5

Resolution of Defective Tubes and All Service-induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 04-Jun-99

!_G ROW COL IND LOCATION CHARACTERIZATION RESOLUTION G

3 34 16 9

CO2.20 C/L WASTAGE (1) 3 34 21 SAI H01 +.11 ODSCC TSP AXIAL PLUG 3

34 21 sal H01 +.20 ODSCC TSP AXIAL PLUG 3

34 21 PI H01 +.21 ODSCC TSP AXIAL PLUG 3

34 21 SAI H01 +.22 ODSCC TSP AXIAL PLUG 3

34 21 sal H01 +.23 ODSCC TSP AXIAL PLUG 3

34 32 Pl H01 +.03 ODSCC TSP AXIAL (1) 3 34 42 15 AV3.12 AVB WEAR (1) 3 34 43 17 AV1.09 AVB WEAR (1) 3 34 43 38 AV2+.27 AVB WEAR (1) 3 34 43 38 AV3+.00 AVB WEAR (1) 3 34 43 23 AV4+.20 AVB WEAR (1) 3 34 51 Pl H02+.00 ODSCC TSP AXlAL (1) 3 34 72 Pl H02+.06 ODSCC TSP AX1AL (1) 3 34 78 19 C01 +.14 C/L WASTAGE (1) 3 35 17 30 C01.03 C/L WASTAGE (1) 3 35 38 31 CO2+.00 C/L WASTAGE (1) 3 35 39 21 AV1 +.00 AVB WEAR (1) 3 35 39 19 AV2+.00 AVB WEAR (1) 3 35 78 4

C01 +.20 C/L WASTAGE (1) 3 36 40 Pl H04+.00 ODSCC TSP AXIAL (1) 3 38 22 Pl H01 +.06 ODSCC TSP AXIAL (1) 3 38 40 19 AV3.06 AVB WEAR (1) 3 38 40 19 AV4+.06 AVB WEAR (1) 3 38 42 Pl H03+.06 ODSCC TSP AXIAL (1) l 3

38 73 40 C01 +.03 C/L WASTAGE PLUG 3

39 68 Pl H04+.03 ODSCC TSP AXIAL (1) 3 40 24 Pl H02.03 ODSCC TSP AXIAL (1) 3 40 25 PI H01 +.06 ODSCC TSP AXIAL (1) 6 l

)

Resolution of Defective Tubes and All Service-Induced Wall Loss Indications SQN Unit 2 Cycle 9 Date: 04Jun-99 SG ROW COL IND LOCATION CHARACTER!ZATION RESOLUTION 3

40 26 -

35 CO2.23 C/L WASTAGE (1) 3 40 56 23 AV2+.00 AVB WEAR (1) 3 41 36 PI H04+.00 ODSCC TSP AXlAL (1) 3 42 28 31 C01 +.06 C/L WASTAGE (1) 3 42 33 Pl H01 +.03 ODSCC TSP AXlAL (1) 3 42 57 Pl H02+.03 ODSCC TSP AXIAL (1) 3 43 44 PI H04+.12 ODSCC TSP AXIAL (1) i 3

43 59 Pl H01 +.03 ODSCC TSP AXIAL (1) 3 44 33 17 C01+.23 C/L WASTAGE (1) 3 45 37 35 CO2.20 C/L WASTAGE (1) 3 45 52 9

C01.15 C/L WASTAGE (1)

(1) Retest Future Outage 1

I 7

l l

7 l

y 1

l l

Resolution of Defective Tubes and All Service-Induced Wall Loss Indications l

SON Unit 2 Cycle 9 Date: OMun-99 SG ROW COL IND LOCATION CHARACTERIZATION RESOLUTION Sample: 0 4

1 94 26 HTS +17.46 FLBD WEAR (1) 4 2

15 Pl H03+.00 ODSCC TSP AXIAL (1) 4 2

25 Pl H01.03 ODSCC TSP AXlAL (1) 4 2

37 Pl H02.06 ODSCC TSP AXIAL (1) 4 2

38 Pl H02+.06 ODSCC TSP AXIAL (1) 4 2

40 PI H01 +.06 ODSCC TSP AXIAL (1) 4 2

53 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 2

55 PI H01 +.09 ODSCC TSP AXIAL (1) 4 2

61 Pl H01.06 ODSCC TSP AXIAL (1) 4 2

61 PI H02.09 ODSCC TSP AXIAL (1) 4 2

67 PI H01.06 ODSCC TSP AXIAL (1) 4 2

72 Pl H02.09 ODSCC TSP AXIAL (1) 4 2

73 Pl H01 +.03 ODSCC TSP AXtAL (1) 4 2

76 Pl H01.06 ODSCC TSP AXIAL (1) 4 2

86 Pl H02.06 ODSCC TSP AXIAL (1) 4 3

18 Pl H02+.03 ODSCC TSP AXIAL (1) 4 3

25 31 C04+.09 C/L WASTAGE (1) 4 3

25 PI H01+.09 ODSCC TSP AXIAL (1) 4 3

25 Pl H02.09 ODSCC TSP AXIAL (1) 4 3

71 Pl H01.14 ODSCC TSP AXIAL (1) 4 3

72 Pl H01.08 ODSCC TSP AXIAL (1) 4 4

12 Pl H02+.06 ODSCC TSP AXIAL (1) 4 4

19 Pl H02+.03 ODSCC TSP AXlAL (1) 4 4

22 Pl H02+.06 ODSCC TSP AXIAL (1) 4 4

27 Pi H01 +.00 ODSCC TSP AXlAL (1) 4 4

32 18 CO2+.03 C/L WASTAGE (1) 4 4

40 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 4

43 PI H01.06 ODSCC TSP AXIAL (1) 1

Resolutka of Defective Tubes and All Service-induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 04Jun-99 SG ROW COL IND LOCATION CHARACTERIZATION RESOLUTION 4

4 48 Pl H05+.03 ODSCC TSP AXIAL (1) 4 4

74 Pl H03+.06 ODSCC TSP AXIAL (1) 4 4

77 Pl H01.03 ODSCC TSP AXIAL (1) 4 4

78 Pl H01+ 06 ODSCC TSP AXIAL (1) 4 4

83 Pl H01 29 ODSCC TSP AXIAL (1) 4 4

86 PI H03.06 ODSCC TSP AXIAL (1) 4 4

87 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 4

87 Pl H03.06 ODSCC TSP AXIAL (1) 4 4

89 PI H03.03 ODSCC TSP AXIAL (1) 4 4

90 PI H01+.09 ODSCC TSP AXtAL (1) 4 4

90 Pl H02+.11 ODSCC TSP AX1AL (1) 1 4

4 91 Pl H01.09 ODSCC TSP AXIAL (1) 4 4

92 Pl H03 03 ODSCC TSP AXIAL (1) 4 4

94 Pl H01 +.11 ODSCC TSP AXIAL (1) 4 5

1 Pl H01+ 14 ODSCC TSP AXIAL (1) 4 5

6 Pl H02+.06 ODSCC TSP AXIAL (1) 4 5

33 PI H01 +.00 ODSCC TSP AXfAL (1) 4 5

39 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 5

39 PI H02+.14 ODSCC TSP AXIAL (1) 4 5

42 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 5

44 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 5

47 Pi H01 +.06 ODSCC TSP AXIAL (1) 4 5

53 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 5

74 PI H01 06 ODSCC TSP AXIAL (1) 4 5

74 Pl H01.20 ODSCC TSP AXIAL (1) 4 5

80 Pl H01 +.14 ODSCC TSP AXIAL (1) 4 5

82 Pl H01 +.14 ODSCC TSP AXIAL (1) 4 5

83 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 5

89 Pl H01 +.03 ODSCC TSP AX!AL (1)

I 2

1 Resolution of Defective Tubes and All Service-Induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 04.Jun-99 EG ROW COL LN_D LOCATION CHARACTERIZATION RESOLUTION D

4 5

91 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 5

92 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 5

93 Pl H01 +.17 ODSCC TSP AXIAL (1) 4 6

25 Pl H02+.00 ODSCC TSP AXIAL (1) 4 6

32 PI H02.03 ODSCC TSP AXIAL (1) 4 6

34 PI H01.11 ODSCC TSP AXIAL (1) 4 6

37 Pl H01.03 ODSCC TSP AXIAL (1) 4 6

46 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 6

52 Pl H05+.23 ODSCC TSP AXIAL (1) 4 6

66 Pl H01 +.11 ODSCC TSP AXIAL (1) 4 6

75 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 6

84 Pl H01 +.14 ODSCC TSP AXIAL (1) 4 6

89 Pl H03+.03 ODSCC TSP AXIAL (1) 4 6

90 Pl H02+.09 ODSCC TSP AXIAL (1) 4 6

91 Pl H01 +.06 ODSCC TSP AXlAL (1) 4 7

18 Pl H02.03 ODSCC TSP AXIAL (1) 4 7

48 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 7

51 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 7

59 Pl H01 +.15 ODSCC TSP AXIAL (1) 4 8

3 Pl H03.09 ODSCC TSP AXIAL (1) 4 8

3 PI H04+.03 ODSCC TSP AXIAL (1) 4 8

8 Pl H02.09 ODSCC TSP AXML (1) 4

'8 17 Pl H02+.20 ODSCC TSP AXlAL (1) 4 8

25 Pl H01 +.14 ODSCC TSP AXIAL (1) 4 8

27 PI H01.09 ODSCC TSP AXIAL (1) 4 8

27 Pl H03.23 ODSCC TSP AXIAL (1) 4 8

31 Pl H01+.00 ODSCC TSP AXIAL (1) 4 8

32 Pl H01.03 ODSCC TSP AXIAL (1) 4 8

33 Pl H01 +.03 ODSCC TSP AXIAL (1) 3

Resolution of Defective Tubes and All Service-Induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 04-Jun-99 SG ROW COL jfLQ LOCATION CHARACTERIZATION RESOLUTION 4

8 34 Pl H01.06 ODSCC TSP AXIAL (1) 4 8

35 Pl H01.08 ODSCC TSP AXIAL (1) 4 8

36 PI H01.28 ODSCC TSP AXIAL (1) 4 8

37 PI H01.03 ODSCC TSP AXIAL (1) 4 8

38 Pl H01.06 ODSCC TSP AXIAL (1) 4 8

39 Pl H01.11 ODSCC TSP AXIAL (1) 4 8

39 Pl H03.06 ODSCC TSP AXIAL (1) 4 8

41 PI H01.08 ODSCC TSP AXIAL (1) 4 8

42 Pl H01 +.17 ODSCC TSP AXIAL (1) 4 8

52 Pl H01.06 ODSCC TSP AXIAL (1) 4 8

53 PI H01 +.12 ODSCC TSP AXlAL (1) 4 8

55 Pl H01 +.12 ODSCC TSP AXlAL (1) 4 8

59 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 8

60 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 8

71 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 8

80 Pl H02.17 ODSCC TSP AXIAL (1) 4 8

82 Pl H01.03 ODSCC TSP AXIAL (1) 4 8

83 Pl H01.03 ODSCC TSP AXIAL (1) 4 8

85 PI H02+.09 ODSCC TSP AXIAL (1) 4 8

89 Pl H01 +.17 ODSCC TSP AXIAL (1) 4 8

92 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 8

92 Pl H02+.03 ODSCC TSP AXlAL (1) 4 9

18 Pl H02+.20 ODSCC TSP AXIAL (1) 4 9

19 PI H02+.11 ODSCC TSP AXIAL (1) 4 9

22 FI H02+.11 ODSCC TSP AXIAL (1) 4 9

23 Pl H01.03 ODSCC TSP AXIAL (1) 4 9

24 PI H01 +.11 ODSCC TSP AXIAL (1) 4 9

30 Pl H01+.20 ODSCC TSP AXIAL (1) 4 9

33 PI H01 +.00 ODSCC TSP AXIAL (1)

i l

Resolution of Defective Tubes and All Service-induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 0./Jun-99 l

3G_ ROW COL IND LOCATION CHARACTERIZATION RESOLUTION 4

9 38 PI H01 +.12 ODSCC TSP AXIAL (1) 4 9

39 Pl H01 +.20 ODSCC TSP AXIAL (1) 4 9

42 Pl H01 +.06 ODSCC TSP AXlAL (1) 4 9

44 Pl H01+ 14 ODSCC TSP AXIAL (1) 4 9

46 Pl H01 06 ODSCC TSP AXIAL (1) 4 9

47 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 9

48 PI H01.12 ODSCC TSP AXIAL (1) 4 9

48 PI H01.17 ODSCC TSP AXIAL (1) 4 9

50 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 9

53 PI H01 +.03 ODSCC TSP AXIAL (1) 4 9

70 PI H01+.14 ODSCC TSP AXIAL (1) 4 9

74 Pl H04+.03 ODSCC TSP AXIAL (1) 4 10 3

PI H02+.03 ODSCC TSD AXIAL (1) 4 10 35 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 10 46 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 11 3

17 C01 09 C/L WASTAGE (1) 4 11 69 PI H03+.06 ODSCC TSP AXIAL (1) 4 12 21 PI H02+.03 ODSCC TSP AXlAL (1) 4 12 23 Pl H01+.06 ODSCC TSP AXIAL (1) 4 12 24 Pl H01 +.26 ODSCC TSP AX1AL (1) 4 12 26 Pl H01 +.12 ODSCC TSP AXIAL (1) 4 12 26 PI H02+.03 ODSCC TSP AXlAL (1) 4 12 27 Pl H01 +.09 ODSCC TSP AXlAL (1) 4 12 32 Pl H01+.09 ODSCC TSP AXIAL (1) 4 12 35 PI H01 +.17 ODSCC TSP AXIAL (1) 4 12 37 Pl H02+.12 ODSCC TSP AXlAL (1) 4 12 39 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 12 41 Pl H01 +.14 ODSCC TSP AXlAL (1) 4 12 43 Pl H01 +.14 ODSCC TSP AXIAL (1) 5

I Resolution of Defective Tubes and All Service-induced Wall Loss indications l

SON Unit 2 Cycle 9 Date: OMun-99 EG_ ROW COL IND LOCATION CHARACTERIZATION RESOLUTION 4

12 44 Pl H01 +.20 ODSCC TSP AXIAL (1) 4 12 45 PI H01 +.00 ODSCC TSP AXIAL (1) 4 12 59 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 12 61 PI H01 +.00 ODSCC TSP AXIAL (1) 4 12 63 Pi H01 +.09 ODSCC TSP AXIAL (1) 4 12 64 Pl H01.09 ODSCC TSP AXIAL 4

12 64 SAI HTS-1.83 PWSCC HTS AXIAL PLUG 4

12 71 Pi H01.09 ODSCC TSP AXIAL (1) 4 12 72 Pl H01.09 ODSCC TSP AXtAL (1) 4 12 74 Pl H01.11 ODSCC TSP AXIAL (1) l 4

12 76 Pl H01.26 ODSCC TSP AXIAL (1) 4 12 83 Pl H01 +.06 ODSCC TSP AXlAL (1) 4 13 29 Pl H02.06 ODSCC TSP AXlAL (1) 4 13 33 Pl H01 +.06 ODSCC TSP AXIAL (1) l 4

13 34 Pl H01 +.17 ODSCC TSP AXIAL (1) 4 13 35 PI H02+ 14 ODSCC TSP AXIAL (1) 4 13 36 PI H01 +.17 ODSCC TSP AXIAL (1) 4 13 39 Pl H02+.12 ODSCC TSP AXIAL (1) 4 13 42 Pl H01 +.12 ODSCC TSP AXIAL (1) 4 13 45 PI H01 +.00 ODSCC TSP AXIAL (1) 4 13 46 PI H01 +.23 ODSCC TSP AXIAL (1) 4 13 47 PI H01 +.00 ODSCC TSP AXfAL (1) 4 13 47 PI H03+.12 ODSCC TSP AXlAL (1) 4 13 48 Pl H01 +.09 ODSCC TSP AXIAL (1) l 4

13 52 Pi H01 +.06 ODSCC TSP AXIAL (1) 4 13 53 Pl H01 +.14 ODSCC TSP AX1AL (1) 4 13 54 Pl H01.06 ODSCC TSP AXIAL (1) 4 13 84 Pl H02+.00 ODSCC TSP AXtAL (1) 4 13 84 Pl H02+.06 ODSCC TSP AXIAL (1) 1 6

[

Resolution of Defective Tubes and All Service-Induced Wall Loss Indications SQN Unit 2 Cycle 9 Date: 0Alun-99 SG ROW COL IND LOCATION CHARACTERIZATION RESOLUTION j

l 4

14 57 PI H01+ 03 ODSCC TSP AXIAL (1) 4 14 59 Pl H01 +.03 ODSCC TSP AXlAL (1) 4 14 78 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 14 83 Pl H01+.09 ODSCC TSP AXIAL (1) 4 14 88 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 14 92 PI H01 +.03 ODSCC TSP AXIAL (1) 4 15 48 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 15 49 Pl H01.06 ODSCC TSP AXIAL (1) 4 15 50 PI H01.06 ODSCC TSP AXIAL (1) 4 15 50 PI H02.03 ODSCC TSP AXlAL (1) 4 15 51 Pl H01 +.00 CDSCC TSP AXIAL (1)

)

4 15 52 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 15 53 Pl H01+.06 ODSCC TSP AXIAL (1) 4 15 62 Pl H01.03 ODSCC TSP AXIAL (1) 4 15 64 Pl H01 +.14 ODSCC TSP AXIAL (1) 4 15 65 Pl H01 +.12 ODSCC TSP AXIAL (1) 4 15 66 Pl H01.03 ODSCC TSP AXIAL (1) 4 16 45 Pl H01.17 ODSCC TSP AXIAL (1) 4 17 21 Pl H04+.03 ODSCC TSP AXIAL (1) 4 17 27 Pl H01+.11 ODSCC TSP AXIAL (1) 4 17 31 Pl H04+ 00 ODSCC TSP AXIAL (1) 4 17 55 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 17 56 Pl H01.03 ODSCC TSP AXIAL (1) 4 17 56 Pl H02+.12 ODSCC TSP AXIAL (1) 4 17 57 PI H01.06 ODSCC TSP AX1AL (1) 4 17 62 Pl H01+.03 ODSCC TSP AXIAL (1) 4 17 78 Pl H03.14 ODSCC TSP AXIAL (1) 4 17 82 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 17 87 PI H01 +.03 ODSCC TSP AXIAL (1)

J 7

l Resolution of Defective Tubes and All Service-Induced Wall Loss Indications SQN Unit 2 Cycle 9 Date: O M un-99 S, G F_OW COL LN_D LOCATION CHARACTERlZATION RESOLUTION D

4 18 6

Pl H02+.06 ODSCC TSP AXIAL (1) 4 18 11 Pl H04 03 ODSCC TSP AXIAL (1) 4 18 21 Pl H02+.17 ODSCC TSP AXIAL (1) 4 18 36 Pl H03+.06 ODSCC TSP AXlAL (1) 4 18 51 Pi H05+.00 ODSCC TSP AXIAL (1) 4 18 58 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 18 61 Pl H01 +.06 ODSCC TSP AX1AL (1) 4 19 51 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 19 53 Pl H04.03 ODSCC TSP AXIAL (1) 4 19 63 Pl H01+.00 ODSCC TSP AXIAL (1) 4 19 71 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 20 20 Pl H04 +.06 ODSCC TSP AXIAL (1) 4 20 26 Pl H02+.11 ODSCC TSP AXIAL (1) 4 20 33 P!

H01 +.14 ODSCC TSP AXIAL (1) 4 20 33 Pl H04+.03 ODSCC TSP AXlAL (1) 4 20 33 Pl H05+.09 ODSCC TSP AXIAL (1) 4 20 34 PI H02+.14 ODSCC TSP AXIAL (1) 4 20 42 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 20 44 PI H02+.03 ODSCC TSP AXlAL (1) 4 20 45 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 20 46 PI H01 +.03 ODSCC TSP AXIAL (1) 4 20 46 Pl H03+.03 ODSCC TSP AXIAL (1) 4 20 46 PI H06+.00 ODSCC TSP AXIAL (1) 4 20 47 P!

H01.03 ODSCC TSP AXIAL (1) 4 20 47 Pl H02.06 ODSCC TSP AXIAL (1) 4 20 48 Pl H01 +.14 ODSCC TSP AXIAL (1) 4 20 50 Pl H01 +.15 ODSCC TSP AXIAL (1) 4 20 51 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 20 52 PI H01 +.03 ODSCC TSP AXIAL (1) 8 1

l Resolution of Defective Tubes and All Service-Induced Wall Loss indications SON Unit 2 Cycle 9 Date: 04Jun-99 SG ROW COL IND LOCATION CHARACTERIZATION RESOLUTION 4

20 54 Pl H01 +.03 ODSCC TSP AXlAL (1) 4 20 56 Pl H01+.09 ODSCC TSP AX1AL (1) 4 20 58 Pl H01 +.07 ODSCC TSP AXIAL (1) 4 20 59 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 20 60 Pl H01 +.14 ODSCC TSP AXIAL (1) 4 20 61 Pl H01 +.17 ODSCC TSP AXIAL (1) 4 20 62 Pl H01.09 ODSCC TSP AX1AL (1) 4 20 63 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 20 64 PI H02.09 ODSCC TSP AXIAL (1) 4 20 69 PI H01+.03 ODSCC TSP AXIAL (1) 4 20 70 Pl H02+.12 ODSCC TSP AXIAL (1) 4 21 10 Pl H06+.15 ODSCC TSP AXIAL (1) 4 21 15 Pl H06+.00 ODSCC TSP AXIAL (1) 4 21 19 P'

C05.15 ODSCC TSP AXIAL (1) 4 21 44 PI H01 +.00 ODSCC TSP AXIAL (1) 4 21 48 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 22 17 Pl C04.12 ODSCC TSP AXIAL (1) 4 22 17 Pl C05.17 ODSCC TSP AXIAL (1) 4 22 17 Pl C07 15 ODSCC TSP AXIAL (1) 4 22 25 Pl H02+.12 ODSCC TSP AXIAL (1) 4 22 25 PI H03+.06 ODSCC TSP AXIAL (1) 4 22 33 Pl H02.14 ODSCC TSP AXIAL (1) 4 22 35 Pl H04+.00 ODSUC TSP AXIAL (1) 4 22 41 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 22 46 Pl H02+.06 ODSCC TSP AXIAL (1) 4 22 47 Pl H02+.17 ODSCC TSP AXIAL (1) 4 22 59 Pl H01 06 ODSCC TSP AXIAL (1) 4 22 62 Pl H04+.00 ODSCC TSP AXIAL (1) 4 23 45 Pl H01 +.09 ODSCC TSP AXIAL (1) 9

Resolution of Defective Tubes and All Service-Induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 0Alun-99 SG ROW COL IND LOCATION CHARACTERIZATION RESOLUTION 4

23 61 Pl H02+.17 ODSCC TSP AXIAL (1) 4 23 63 Pl H01.03 ODSCC TSP AXIAL (1) 4 23 64 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 23 65 Pl H02+.14 ODSCC TSP AXIAL (1) 4 23 66 PI H01 +.14 ODSCC TSP AXIAL (1) 4 23 66 Pl H02.03 ODSCC TSP AXIAL (1) 4 23 67 Pl H02+.15 ODSCC TSP AXIAL (1) 4 23 68 Pl H01 +.17 ODSCC 1SP AXIAL (1) 4 23 69 Pl H01 +.20 ODSCC TSP AXIAL (1) 4 23 70 PI H01+.09 ODSCC TSP AXIAL (1) 4 23 71 Pl H01.03 ODSCC TSP AXIAL (1) 4 23 72 Pl H01 +.12 ODSCC TSP AXIAL (1) 4 23 73 PI H06+.03 ODSCC TSP AXIAL (1) 4 23 74 Pl H01 +.12 ODSCC TSP AXIAL (1) 4 23 75 PI H01 +.11 ODSCC TSP AXIAL (1) 4 23 87 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 25 40 Pl H01 +.11 ODSCC TSP AXIAL (1) 4 25 41 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 25 43 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 25 47 Pl H05.06 ODSCC TSP AXIAL (1) 4 25 50 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 25 53 Pl H01.09 ODSCC TSP AXIAL (1) 4 25 53 Pl H02.03 ODSCC TSP AXIAL (1) 4 25 58 PI H01 +.12 ODSCC TSP AXlAL (1) 4 25 67 PI H04+.06 ODSCC TSP AXIAL (1) 4 25 80 Pi H02+.00 ODSCC TSP AXIAL (1) 4 25 83 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 26 19 Pl H02+.06 ODSCC TSP AXIAL (1) 4 26 27 PI H03+.03 ODSCC TSP AXIAL (1) 10

Resolution of Defective Tubes and All Service-induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 0,fJun-99 EG ROW COL INN _D LOCATION CHARACTERIZATION RESOLUTION D

4 26 31 Pl H06.06 ODSCC TSP AXIAL (1) 4 26 62 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 26 64 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 26 68 Pl H01 +.20 ODSCC TSP AXfAL (1) 4 26 69 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 26 71 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 26 86 Pl H02+.00 ODSCC TSP AXIAL (1) 4 27 45 Pl H01 +.12 ODSCC TSP AXIAL (1) 4 27 62 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 27 63 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 27 63 PI H02+.15 ODSCC TSP AXIAL (1) 4 27 65 PI H02.09 ODSCC TSP AXIAL (1) 4 27 65 Pl H03+.03 ODSCC TSP AXIAL (1) 4 27 66 Pl H02+.09 ODSCC TSP AXIAL (1) 4 27 69 PI H01 +.14 ODSCC TSP AXIAL (1) 4 27 70 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 27 71 PI H01 +.03 ODSCC TSP AXIAL (1) 4 27 72 PI H02.03 ODSCC TSP AXlAL (1) 4 27 72 Pl H03+.12 ODSCC TSP AXIAL (1) 4 27 74 PI H02+.03 ODSCC TSP AXIAL (1) 4 27 75 PI H01 +.03 ODSCC TSP AXIAL (1) 4 27 75 Pl H02+.14 ODSCC TSP AXIAL (1) 4 27 77 PI H01 +.09 ODSCC TSP AXIAL (1) 4 27 77 PI H02+.03 ODSCC TSP AXIAL (1) 4 27 77 Pl H03+.14 ODSCC TSP AXIAL (1) 4 27 78 Pl H01 +.17 ODSCC TSP AXIAL (1) 4 27 78 PI H02+.00 ODSCC TSP AXIAL (1) 4 27 79 Pl H02+.03 ODSCC TSP AX1AL (1) 4 27 80 Pl H02+.00 ODSCC TSP AXIAL (1) 11 I

l l

Resolution of Defective Tubes and All Service-induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 04Jun-99 SG ROW COL IND LOCATION CHARACTERIZATION RESOLUTION 4

27 81 Pl H03+.09 ODSCC TSP AXIAL (1) 4 27 82 PI H03+.00 ODSCC TSP AXIAL (1) 4 27 83 Pl H04.03 ODSCC TSP AXIAL (1) 4 28 20 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 28 28 PI H04+.03 ODSCC TSP AXlAL (1) 4 28 40 Pl H02+.14 ODSCC TSP AXIAL (1) 4 28 47 Pl H02+.06 ODSCC TSP AXIAL (1) 4 28 62 Pl H02+.03 ODSCC TSP AXIAL (1) 4 28 63 Pl H02+.09 ODSCC TSP AXlAL (1) 4 28 64 Pl H02+.12 ODSCC TSP AXIAL (1) 4 28 65 PI H01 +.12 ODSCC TSP AXIAL (1) 4 28 67 PI H01 +.12 ODSCC TSP AXIAL (1) 4 28 68 Pl H01 14 ODSCC TSP AXlAL (1) 4 28 68 Pl H02+.03 ODSCC TSP AXIAL (1) 4 28 70 Pl H01.12 ODSCC TSP AXIAL (1) 4 28 70 Pl H02+.20 ODSCC TSP AXIAL (1) 4 28 71 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 28 72 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 28 72 Pl H02+.20 ODSCC TSP AXIAL (1) 4 28 72 Pl H03+.12 ODSCC TSP AXIAL (1) 4 28 73 Pl H01.11 ODSCC TSP AXIAL (1) 4 28 74 Pl H03+.17 ODSCC TSP AXIAL (1) 4 28 74 PI H05.06 ODSCC TSP AXIAL (1) 4 28 75 PI H02+.14 ODSCC TSP AXIAL (1) 4 28 76 PI H02+.12 ODSCC TSP AXIAL (1) 4 28 77 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 28 78 Pl H01 +.12 ODSCC TSP AXlAL (1) 4 28 79 PI H03+.11 ODSCC TSP AXIAL (1) 4 28 80 PI H03 +.17 ODSCC TSP AXIAL (1) l 12 i

Resolution of Defective Tubes and All

)

Service-induced Wall Loss Indications SQN Unit 2 Cycle 9 Date: 0A/un-99 l

SG ROW COL IND LOCATION CHARACTER!ZATION RESOLUTION 4

28 81 Pl H02+.03 ODSCC TSP AXIAL (1) 4 28 81 Pl H03+.00 ODSCC TSP AXIAL (1) 4 28 82 Pl H02 03 ODSCC TSP AXIAL (1) 4 29 18 PI H07+.03 ODSCC TSP AXIAL (1) 4 29 19 Pl H06+.10 ODSCC TSP AXIAL (1) 4 29 27 Pl H02+.03 ODSCC TSP AXlAL (1) 4 29 27 Pl H07+.03 ODSCC TSP AXIAL (1) 4 29 38 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 29 43 PI H01 +.17 ODSCC TSP AXIAL (1) 4 29 47 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 29 48 PI H01 +.06 ODSCC TSP AXlAL (1) 4 29 51 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 29 67 21 AV1 +.00 AVB WEAR (1) 4 29 67 15 AV2.18 AVB WEAR (1) 4 29 67 27 AV3+.35 AVB WEAR (1) 4 29 67 19 AV4+.17 AVB WEAR (1) 4 30 21 PI H02+.09 ODSCC TSP AXIAL (1) 4 31 13 29 C01.32 C/L WASTAGE (1) 4 31 15 59 C01.17 C/L WASTAGE PLUG 4

31 39 Pl H01 +.09 ODSCC TSP AXIAL (1) 4 31 40 Pi H02+.03 ODSCC TSP AXIAL (1) 4 31 54 PI H01 +.09 ODSCC TSP AXIAL (1) 4 31 55 Pl H02+.03 ODSCC TSP AXIAL (1) 4 31 71 Pl H01 +.00 ODSCC TSP AXIAL (1) 4 31 71 Pl H02+.20 ODSCC TSP AXlAL (1) 4 31 71 Pl H03+.00 ODSCC TSP AXIAL (1) 4 31 72 PI H01 +.09 ODSCC TSP AXIAL (1) 4 32 41 16 AV2+.00 AVB WEAR (1) 4 32 41 16 AV3+.00 AVB WEAR (1) 13

n Resolution of Defective Tubes and All Service-induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 04Jun-99 SO ROW COL IND LOCATION CHARACTERIZATION RESOLUTION 4

32 44 Pl H04+.03 ODSCC TSP AXIAL (1) 4 32 64 Pl H01 +.09 ODSCC TSP AXlAL (1) 4 32 64 Pl H02.06 ODSCC TSP AXlAL (1) 4 32 65 Pl H02+.06 ODSCC TSP AXlAL (1) 4 32 68 PI H02.06 ODSCC TSP AXIAL (1) 4 32 69 Pl H01.03 ODSCC TSP AXlAL (1) 4 32 71 Pl H01 +.14 ODSCC TSP AXIAL (1) 4 32 71 Pl H03+.06 ODSCC TSP AXIAL (1) 4 32 74 PI H01 +.03 ODSCC TSP AXIAL (1) 4 33 22 Pl H02+.14 ODSCC TSP AXIAL (1) 4 33 51 Pl H02+.12 ODSCC TSP AXIAL (1) 4 34 30 Pl H02+.20 ODSCC TSP AXIAL (1) 4 34 47 Pl H01 +.09 ODSCC TSP AXIAL (1) l 4

34 58 Pl H02+.20 ODSCC TSP AXIAL (1) 1 4

34 65 Pl H02+.15 ODSCC TSP AXlAL (1) 4 34 71 Pl H02+.06 ODSCC TSP AXIAL (1) 4 34 72 PI H01 +.06 ODSCC TSP AXIAL (1) 4 34 76 9

CO2+.17 C/L WASTAGE (1) 4 35 33 Pl H03+.12 ODSCC TSP AXIAL (1) 4 35 46 Pl H06+.06 ODSCC TSP AXlAL (1) 4 35 55 19 AV1 +.00 AVB WEAR (1) 4 36 23 Pl H02+.00 ODSCC TSP AXlAL (1) l 4

36 25 Pl H02+.23 ODSCC TSP AXIAL (1) 4 36 54 Pl H04+.17 ODSCC TSP AXIAL (1) 4 36 Ed PI H02+.09 ODSCC TSP AXIAL (1) 4 36 57 Pl H02+.12 ODSCC TSP AXIAL (1) 4 36 62 Pl H02.06 ODSCC TSP AXlAL (1) 4 36 65 PI H01 +.12 ODSCC TSP AXIAL (1) i 4

36 68 Pl H02+.06 ODSCC TSP AXIAL (1) 14 l

l l

s' Resolution of Defective Tubes and All Service-induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 04 Jun-99 S.G ROW COL INQ LOCATION CHARACTERIZATION RESOLUTION 4

36 72 Pl H01 +.23 ODSCC TSP AXIAL (1) 4 37 62 Pl H04+.06 ODSCC TSP AXIAL (1) 4 37 63 Pl H01 +.06 ODSCC TSP AXIAL (1) 4 37 72 Pl H01 +.15 ODSCC TSP AXIAL (1) 4 38 24 Pl H03+.12 ODSCC TSP AXIAL (1) 4 38 25 PI H02+.00 ODSCC TSP AXlAL (1) 4 38 26 Pl H02.06 ODSCC TSP AXIAL (1) 4 38 30 Pl H02+.14 ODSCC TSP AXIAL (1) 4 38 34 Pl H02+.09 ODSCC TSP AXIAL (1) 4 38 44 27 AV3+.09 AVB WEAR (1) 4 38 47 25 AV3+.09 AVB WEAR (1) 4 38 47 20 AV4+.17 AVB WEAR (1) 4 38 49 27 AV3+.26 AVB WEAR (1) 4 38 52 22 AV3+.00 AVB WEAR (1) 4 38 52 22 AV4 +.00 AVB WEAR (1) 4 38 61 Pl H02.03 ODSCC TSP AXIAL (1) 4 38 65 20 AV1 +.00 AVB WEAR (1) 4 38 65 23 AV2+.00 AVB WEAR (1) 4 39 37 PI H03+.06 ODSCC TSP AXIAL (1) 4 39 42 Pl H03.14 ODSCC TSP AXIAL (1) 4 39 49 Pi H02+.06 ODSCC TSP AXIAL (1) 4 39 66 Pl H01 +.14 ODSCC TSP AXIAL (1) 4 41 62 21 CO2.12 C/L WASTAGE (1) 4 41 69 33 C01.32 C/L WASTAGE (1) 4 42 38 Pl H02+.03 ODSCC TSP AXIAL (1) 4 43 35 10 CO2+.06 C/L WASTAGE (1) 4 43 65 Pl H01 +.03 ODSCC TSP AXIAL (1) 4 44 34 17 CO2.20 C/L WASTAGE (1) 4 44 38 22 CO2.09 C/L WASTAGE (1) 13

Resolution of Defective Tubes and All Service-Induced Wall Loss Indications SON Unit 2 Cycle 9 Date: 0/Jun-99 E.G ROW COL IND LOCATION CHARACTERIZATION RESOLUTION 4

44 38 Pl H01 +.14 ODSCC TSP AXIAL (1) 4 44 39 1

CO2.23 C/L WASTAGE (1) 4 44 61 41 C03+.17 C/L WASTAGE PLUG 4

45 39 Pl H05+.12 ODSCC TSP AXIAL (1) 4 45 45 39 CO2.20 C/L WASTAGE (1) 4 45 51 Pl H04.06 ODSCC TSP AXIAL (1) 4 45 54 13 C02+.14 C/L WASTAGE (1) 4 45 57 38 CO2.06 C/L WASTAGE (1) 4 45 58 39 C01.32 C/L WASTAGE (1) 4 45 58 PI H03+.17 ODSCC TSP AXIAL (1) j 4

45 59 32 C01.52 C/L WASTAGE (1)

(1) Retest Future Outage 16