ML20199D973

Rev 1 to Results of Outage 5M Eddy Current Test Exams of TMI-1 Once-Through Steam Generators

ML20199D973
Person / Time
Site:	Three Mile Island
Issue date:	06/12/1986
From:	Barley R, Kazanas N, Tira Patterson GENERAL PUBLIC UTILITIES CORP.
To:
Shared Package
ML20199D941	List: ML20199D936 ML20199D973
References
781, 781-R01, 781-R1, NUDOCS 8606230147
Download: ML20199D973 (127)

Text

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781 1 g g TDR NO. CEVISl!N NO.

SUDGET TECHNICAL DATA REPORT ACTIVITY NO. _.I2325 PAGE 1 OF 50 PR2 JECT:

DEPARTMENT /SECTION Quality Assurance /SPP TMI Unit 1 OTSG Eddy Current Program RELEASE DATE REVISION DATE GM46 l DOCUMENT TITLE: Results of Outage SM ECT Examinations of the TMI-l OTSGs.

CRl2iNATOR SIGNATURE DATE APPROVAL (S) SIGNATURE DATE

,- n n M. T. Torborg M N L = 4//2/gg R. O. Barley M (ofl2lP_6,  !

/ T. J. Pattersonj g j ,, f " [ g/g i CC. Kazanas ggggd d/g(

APP)tOVKf0R EXTERNA,L DifRIBUTION DATE ws ww- ..i-g2a R. F. Wilhon Does this TDR include recommendation (si? Oyes @ffo if yes, TFWR/TR #

o DISTRIBUTION ABSTRACT: Statement of Problem: On March 21, 1986 TMI-1 was shut down to permit a planned (Outage SM) Eddy Current Examination of the tubing in the Once Through Steam Generators B. A. Bader (OTSG's). The examinations were performed in accordance with the inspection program outline contained in GPUN Topical B. E. Ballard Report TR-008 and also satisfied the surveillance requirements R. O. Barley of Technical Specification 4.19.

G. R. Capodanno Summary: The scope of the examinations included approximately J. J. Calitz

97. f the total tubes in each OTSG. The examinations were performed to determine the condition of both the 55' unexpanded I. R. Finfrock portion of the tubes and the kinetically expanded areas in the upper tube sheet. The examinations included a sample F. S. Giacobbe of tubes with no previously identified degradation and all J. S. Jandovitz previously identified degraded tubes.

H. S. Jung Indications reported during the 1986-5M ECT cxaminations were characterized and compared to the indications reported N. C. Kazanas during the 1982 and 1984 examinations. In addition the 1986-W. L. Kimmick SM examination results for previously degraded tubes were R. Ostrowski mPared to the 1984 examination results to determine if there was any ongoing corrosion or degradation.

atterson Results: As a result of the 1986-5M ECT examinations ten M. T. Torborg (10) tubes in OTSG A and fifteen (15) tubes in OTSG B were removed from service. In addition, twenty four (24) tubes

. in OTSG A and nine (9) tubes in OTSG B were determined to have indications of 20-497. through wall and will be monitored as degraded tubes during the next examination.

Conclusions:

Based on the results of the examinations GPUN was able to conclude there was no evidence of new degradation in the OTSGs and no evidence of continuing degradation of previously degraded tubes. The characterization and comparison of the newly reported indications showed they were small, inner diameter initiated indications which were consistant, in both location and size, with the indications identified during the 1984 cxaminations. I 8606230147 860617 cCOVER PAGE ONLY A0000030 4 83

DOCUMENT NO.

Uh Mf TDR-781 Page 1A TITLE Results of Outage SM ECT Examinations of the TMI-l OTSGs.

REV

SUMMARY

OF CHANGE APPROVAL DATE 1 Appendix I, Pages 7 and 9, corrected Kinetic Expansion Transition Location for tubes d"[f-((

A-77-123, A-6-43 and A-126-90. , l.-/ G-66 Appendix I, Pages 7, 8, 9 and 11, added

" asterisk" note. M C MA 24 b Appendix I, Pages 9 and 11, clarified title by I adding "During 1983 Baseline".

i o

5 Y

l I

A000003612 83

- . = _

TDR 781 REVISION 1 PAGE 2 of 50 TABLE OF CONTENTS PAGE NO.

I. INTRODUCTION ............................................. 3 II. RESULTS .................................................. 4 III. EDDY CURRENT EXAMINATION ................................. 6 IV. EXAMINATION CATEGORIES AND RESULTS ....................... 13 A. EXAMINATIONS REQUIRED BY T.S. 4.19 .................. 13

1. ISI Tubes ...................................... 13

2. 3% Random Sample Tubes ......................... 20 B. EXAMINATIONS REQUIRED BY TR-008 ..................... 23

1. Sample. Tubes Adjacent to Plugged Tubes (Wear Tubes) ................................... 23

2. Sample. Tubes in Hlah Plug Density Area ........ 25

3. Kinetic Expansion Area Indications ............. 27

4. 3% Sample. UTS Only ............................ 29 C. GPUN ELECTIVE EXAMINATIONS .......................... 31

1. Tubes with Indications Not Confirmed by 8x1 Absolute Exam .................................. 31

2. Lane / Wedge Area Tubes .......................... 34

3. Gap Tubes ...................................... 38

4. Special Category Tubes ......................... 40 i V. DISCUSSION OF RESULTS .................................... 42 VI. CONCLUSIONS .............................................. 49 VII. REFERENCES ............................................... 50 APPENDIX I ECT EXAMINATION DATA SUMMARIES .................

APPENDIX II REVIEW 0F PREVIOUS ECT DATA ....................

APPENDIX III ISI TUBE LIST ..................................

I

(

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i l

TDR 781 REVISION 1 PAGE 3 of 50 l

I. INTRODUCTION l

On March 21, 1986 THI-1 was shut down to permit a planned Eddy Current (ECT) examination of the tubing in the Once Through Steam Generators (OTSGs).

The examinations were performed in accordance with the inspection program

~

outline included in GPUN Topical Report TR-008 (Reference 1). The examination also satisfied the requirements of TMI-l Technical Specification 4.19.

(Reference 2)

In general terms, the scope of the examinations included a 3% random sample, all previously identified degraded tubes, special examinations required by TR-008 and additional groups of tubes which GPU elected to examine. This scope included approximately 9% of all tubes in each OTSG.

The scope of the examination included both the unexpanded and the kinetically expanded portion of the tubes. The examination of the unexpanded portien was performed using the Dual Examination Method, explained in TDR 423 (Reference 3), while the examination of the kinetically expanded portion was performed using the 8x1 absolute technique. The latter is required due to the variation in the diameter of the tube.

The 1986 ECT data was compared to 1982 data (prior to kinetic expansion) and 1984 data (post hot functional testing) where available. These comparisons were used to characterize the 1986 indications and to determine if there was evidence of new or ongoing degradation.

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TDR 781 REVISION 1 ,

PAGE 4 of 50 II. RESULTS In total, GPUN examined 1913 tubes in OTSG A and 1660 tubes in OTSG B.

As a result of these examinations, ten (10) tubes in OTSG A and fifteen (15) tubes in OTSG B were removed from service (plugged). Of these tubes, fourteen (14) were plugged due to indications which exceeded the 50% T.H. plugging limit. Two (2) tubes were plugged because they exceeded the 20% T.H. plugging limit for the Lane / Lane Hedge area. An additional eight (8) tubes were preventatively plugged due to distorted tubesheet entry signals or other anomalies for which accurate percent throegh wall determinations could not be made. In addition, one (1) tube was plugged due to a stuck eddy current probe which could not be retrieved. Detailed results are included in following sections.

The comparison of the 1982, 1984 and 1986 ECT results showed the inner diameter indications o: curred in the same axial and radial locations of the OTSGs during all three examinations. The characterization of the 1986 indications by percent through wall, voltage and circumferential extent showed that the indications were similar to those identified during the 1984 examinations.

The examination and evaluation of the previously degraded tubes showed no evidence of ongoing degradation or propagation of existing indications.

This was determined through by a comparison of the 1984 and 1986 percent through wall values for previously identified inner diameter indications which showed a mean decrease of 2.6% through wall from 1984 to 1986. This change has been determined to be well within the repeatability of the ECT process.

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TDR 781

' REVISION 1.

PAGE 5 of 50 The "no growth" conclusion was further supported through a review of the 1982 -

and 1984 data for previously unreported indications. This review showed that most of the indications could be found during a reevaluation of the previous data. This is consistent with the reevaluations performed following both the 1983 and 1984 examinations which are documented in References 1 and.6.

1 In addition to the indications which were characterized and compared to the 1982 and 1984 results, another set of approximately ten (10) indications were distorted and could not be characterized. These indications occurred mainly in the entrance to the upper tube sheet. Because the signals were distorted, GPUN could not accurately determine the percent through wall penetration of the degradation and the tubes were preventatively plugged as discussed above.

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TDR 781 REVISION 1 PAGE 6 of 50 III. EDDY CURRENT EXAMINATIONS TECHNIQUES The ECT examinations were performed using the same basic methods which were developed and qualified by GPUN in 1982 and 1983. These methods include:

• Dual Examination Method, for the unexpanded portion of tube

• Bobbin Coil Absolute Method, for the detection of wear

• 8xl Absolute Method, for the examination of the expanded portion.

The following is a brief description of each method. The detailed examination procedures are contained in TMI-1 Surveillance Procedure 1300-4B (Reference 5).

Dual Examination Method: The portion of tubing between the roll expansion in the lower tube sheet and the kinetic expansion in the upper tube sheet is examined using the Dual Examination Method which GPUN developed and qualified in 1982 (Reference 3). This technique consists of first examining the tubes using the .540" High Gain Standard Differential (H.G.S.D.) to screen indications for further evaluations.

Tubes with .540" H.G.S.D. Indications are then examined using the 8x1 absolute technique to determine if the indications are relevant and to determine the circumferential extent. For confirmed indications, the characterization and disposition of the tubes is based on the following:

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TDR 781 REVISION 1 PAGE 7 of 50 Percent Through Hall - Based on phase analysis of the .540" H.G.S.D. (see Reference 4).

Circumferential Extent - Based on number of 8x1 coils.

Signal Voltage - Based on .540" H.G.S.D.

Axial Location - Based on .540" H.G.S.D.

NOTE: The amplitude, phase angle and axial location of the 8xl Absolute are also used to confirm the .540" H.G.S.D.

Indications.

Wear Examinations: The examination for the detection of gradual, outer diameter tube wear is performed during the .540" H.G.S.D. examinations.

This is done by operating one channel of the multi-frequency ECT instrument in the 200 kHz absolute mode. The use of the absolute mode permits detection of gradual changes in the tube wall which cannot be detected during a differential examination. Indications which appear only in the absolute channel are therefore screened as possible wear.

The suspect area is then examined using the 8x1 absolute probe to provide additional data.

l I

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TDR 781 REVIS10N 1 PAGE 8 of 50 8x1 of Upper Tube Sheet: The 8x1 of the upper tubesheet was performed using the MIZ 18 ECT instrument and .187" diameter coil 8x1 probe. The examinations included the portion of the tubes from the tubesheet entry to 6" above the kinetic expansion transition. Indications detected during this examination were recorded by number of coils, maximum coil amplitude and the phase angle of the signal. No percent through wall determinations were made for these indications.

EXAMINATION EXTENT The .540" H.G.S.D. probe is used to examine the unexpanded length of the tube from the lower roll transition in the lower tube sheet to the kinetic expansion transition in the upper tube sheet. Although Technical Specification 4.19 requires the examination of only the portion of tubing between the secondary faces of the upper and lower tube sheets, the majority of the inspected tubes were examined over the entire unexpanded length.

As in 1982 and 1984, some tubes were constricted in the lower tubesheet (apparently a result of; explosive plugs in adjacent tubes) and would not pass the .540" probe. This resulted in several probes becoming lodged and required personnel to enter the OTSG to remove them. Because of this problem, the extent of the examination was reduced to eliminate the examination of the lower tube sheet. As a result, approximately 309 tubes in OTSG A and 103 tubes in OTSG B, were examined from the secondary face of the lower tube sheet through the kinetic expansion transition in the upper tube sheet.  ;

l 4

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TDR 781 REVISION 1 PAGE 9 of 50 This decision was driven by A' ARA concerns and justified by the fact that no confirmed degradation had been identified in the approximately 2300 lower tube sheets examined to that point. Since the THI-l Technical Specification recuired the examinations be completed only to the secondary face of the lower tube sheet, the examinations were considered complete and no follow up examinations were performed using a smaller probe.

For the 8x1 examinations of the upper tube sheet, the length of tubing from the 15th T.S.P. to the upper tube end was examined. The data evaluation process included the length of tubing from the secondary face of the upper tube sheet to a point 6" above the kinetic expansion transition.

RECORDING OF INDICATIONS When analyzing the eddy current data, various indications are recorded by the data analyst. These indications fall into two basic groups; Relevant Indications which require additional evaluations and Non Relevant Indications which do not require further evaluations. The following definitions and indication codes were applied during the 1986 examinations.

RELEVANT INDICATIONS Any evidence of through wall penetration >207. through wall in the .540" H.G.S.D. examination is considered a relevant indication, pending confirmation by the 8xl absolute exam.

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TDR 781 REVISION 1 PAGE 10 of 50 The S/N (signal to noise) code represents a potentially relevant signal, pending confirmation by the 8xl absolute exam. This is a low amplitude

(<1 volt) signal which has a poor signal to noise ratio (<3:1) and cannot be accurately evaluated for percent through wall depth. Tubes with these signals are examined by the 8xl absolute technique and are dispositioned on a case by j case basis.

The DTS code is a distorted tube support or distorted tube sheet indication. Distortion of the support signal may be caused by a number of l

different influences including the presence of a defect. This is a relevant I signal if confirmed by the 8xl absolute exam. Tubes with indications in this area were removed from service following the outage SM examinations.

l The ADR code represents absolute drift. Read from the 200 kHZ absolute channel, it is an indication of wall thickness change. The 8xl absolute channel is read for confirmation and circumferential extent. This signal may l be from local wear or manufactured variation in wall thickness.

The PD code is used to identify possible defects. This code is assigned to identify signals for additional evaluations such as 8xl absolute to determine if they are relevant or non-relevant.

INDICATIONS REQUIRING NO FURTHER EVALUATION i

The IDC code represents ID chatter. ID chatter refers to an uneven tube wall which is the result of the manufacturing process.

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TDR 781 REVISION 1 PAGE 11 of 50 The PVN code shows a permeability variation. These variations may be mistaken for ID degradation. GPUN has largely eliminated this indicatior, by using saturation probes which incorporate small magnets to reduce the effects of changes in the magnetic properties of the tube.

A DNG code identifies minor dings or dents in the free span of the tube. Most dings have been produced during tube manufacture or installation.

The DSS code is used to identify irregular support signals that do not show a defect indication. These signals are recorded for future information only.

NDD stands for No Detectable Defects, this code indicates no relevant or non-relevant indications are present in the tube.

Indication Locations The locations of the ECT indications are recorded to identify their

" elevation" or " axial location" in the OTSGs. The locations are recorded in inches, either above "+" or below " " the tubesheet surfaces or tube support plate. The relative locations of the tube sheets and tube support plates (T.S.P) are shown in Figure #1.

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TDR 781 REVISION 1 PAGE 12 of 50 FIGURE 1 OTSG Longitudinal Section PRIMARY FACE M

UPPER TUBE 5HEET (UT3)

F

.,.......,.c,,.,

5 ggg r,gf a w lefM ammu 1 :.p,,,,,_ A l 3 .c p.

mummmme l,1,0 enemmu ll .4 '8 :

som -

' 'l q .4,

" 56' C 1 , .1 ym-

• ~~~

w~. -

-== ivn .-.-

-- i- -

SUPPORT TUBE

/ " " " " "

PLATES LOWER TUBESHEET (LTS) y

! PRIMARY FACE

\

REACTOR BLDG. FLOOR l

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TDR 781 REVISION 1 PAGE 13 of 50 IV. EXAMINATION CATEGORY AND RESULTS This section details the various categories of tubes which were examined during outage SM. The categories are separated into 3 major groups:

A. Examinations Required by Technical Specification 4.19 B. Examinations Required by Topical Report TR-008 C. GPUN Elective Examinations Some tubes may be included in more than one examination category. In those cases the tube is included in the first category discussed.

A. EXAMINATIONS REQUIRED BY T.S. 4.19

1. ISI TUBES Examination Category A.I.

SCOPE In OTSG "A", 266 ISI tubes were examined.

In OTSG "B", 44 ISI tubes were examined.

INCLUDED TUBES The set of ISI tubes consists of two subsets, one of which (" Degraded Tubes") is required to be examined by T.S. 4.19. Degraded tubes are defined as those tubes having previously identified degradation of 120% through wall.

This includes tubes with .540" H.G.S.D. indications 120% in 1984 data, which 1

were confirmed by the 8xl absolute exam.

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TDR 781 REVISION 1 PAGE 14 of _50 In order to track all tubes with any evidence of degradation, GPUN elected to include confirmed indications of (20% through wall in this examination category. For this examination the set of ISI tubes consists of all tubes, evaluated in 1984 to have any confirmad evidence of degradation, which were not plugged subsequent to the 1984 examination. This includes both inner diameter and outerd'iameter indications.

These tubes are identified in TR-008, Table A-1, Category la.

PURPOSE OF EXAMINATION Examination of the ISI tubes is done for two reasons. First, new examination results are compared to the results of previous examinations to determine if there is evidence of an active degradation mechanism occurring in the OTSGs. Second, the examination provides assurance that no tubes with 1

indications exceeding the plugging criteria remain in service.

DATA RECORDING The evaluated results of the 540 HGSD examination of the ISI tubes are recorded in Data Set 1.0. Companion 8x1 absolute exam results are recorded in Data Set 3.0. The relevant examination results for these tubes are contained in the Appendices and are identified as Exam. Cat. A.I.

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TOR 781 REVISION 1 PAGE 15 of 50 RESULTS The results of the 1986 examinations of the ISI tubes were consistent with the 1984 results. The majority of the indications previously identified in 1984 were confirmed and showed no evidence of change from 1984 to 1986. In some cases, discrepancies in the percent through wall evaluations, indication elevations, and number of indications reported were identified. These discrepancies were resolved through tube by tube comparisons of the 1984 and 1986 data. With the resolution of these discrepancies, GPUN was able to conclude that the examination did not reveal any ongoing degradation of existing indications from 1984 to 1986.

The results of the examinations did require a total of six (6) of the 310 tubes (1 in OTSG A, 5 in OTSG B) to be removed from service. Two (2) tubes in OTSG B, B-94-3 and B-103-5 were plugged because of indications >50%

T.H. In the upper tube sheet region. A review of the 1984 data showed the indications had previously been undercalled in 1984 and had not changed from 1984 to 1986.

Four tubes A-104-123, B-43-10, B-89-5 and B-94-4 were plugged because of possible defects at the entrance to the upper tube sheet. These indications were distorted signals (OTS) and the tubes were preventatively plugged. A more complete evaluation of these tubes is given in Section V of this report. ,

i The details of the data reviews are shown in Appendix II.

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TDR 781 REVISION 1 PAGE 16 of 50 EVALUATION OF 1984 AND 1986 INDICATIONS Most 1984 Indications in the ISI tubes were verified in 1986, some were re-evaluated as non-relevant indications. Since the phase angle of an indication from a shallow discontinuity is very close to the phase angle of an indication from a surface irregularity, they are difficult to separate.

However, the time of signal formation (rise time) is slower for the surface irregularity, which allows an experienced data analyst to classify the indication as non-relevant. Therefore, some indications previously identiflod as degradation in 1984 were re-evaluated in 1986 as ID chatter (IDC) which indicates a variation in the inner diameter of the tube wall and not a degraded condition.

In some cases, new indications seemed to have appeared in the 1986 data. However, a review of the 1984 tapes showed that, in all cases, the indication was present. The indications were not previously reported because of several reasons. They were either difficult to separate from the background noise, recorded at the improper elevation or, in the case of multiple indications, not evaluated on an individual basis.

Some 1984 indications were not reported in 1986. Review of the tapes (1984 or 1986 as applicable) showed the discrepancies were the result of differences in the reported locations or the 1984 indications were determined to be non-relevant. The complete results of these evaluations are shown in Appendix III.

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TDR 781 REVISION 1 PAGE 17 of 50 STATISTICAL EVALUATION OF I.D. INDICATIONS To check for evidence of continuing inner diameter initiated tube wall degradation, a group of indications in the degraded tubes was checked for change between 1984 and 1986. The indications used were I.D. Indications evaluated at 220% T.W. In both 1984 and 1986, and confirmed by the 8x1 absolute examination in 1984 or 1986. See Table I and 2 and Appendix III.

In "A" OTSG, 139 indications met the above criteria. The average change in each indication was -3.1% of wall thickness between 1984 and 1986 (sample standard deviation 6.0% of wall). The amplitude of these indications showed a mean change of .1 volts (sample standard deviation .2 volts).

In "B" OTSG, 13 indications met the criteria. The average change in each indication was +2.2% of wall thickness between 1984 and 1986 (sample standard deviation 4.1% of wall). The amplitude of these indications showed a mean change of .7 volts (sample standard deviation .5 volts).

When combined, the average change per indication for both OTSG's was

-2.6% of wall (sample standard deviation 6.1% of wall). The mean amplitude change was .2 volts (sample standard deviation .3 volts). These changes are well within the degree of precision for this process and support the conclusion that there is no ongoing degradation.

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TDR 781 REVISION 1 PAGE 18 cf 50 '

TABLE 1 EVALUATION OF TMI-l ISI TUBES BREAKDOWN OF ISI TUBE POPULATION

• No. of Tubes No. of 1984 Indications OTSG A OTSG B TOTAL OTSG A OTSG B TOTAL ISI Population 266 44 310 513 73 586 Included in Statistical 104 10 114 139 13 152 Evaluation (1) ,

Excluded from Statistical 162 34 196 374 60 434 Evaluation (2)

(1) Indications included in statistical evaluation contain only tubes with I.D. Indications >20 TH in

both 1984 and 1986 and confirmed in either 1984 or 1986.

(2) Basis for excluding indication A) 0.D. Origin 5 10 B) <20% TW in 1984 138 32 C) <20% TW in 1986 58 0 ,

D) Low signal / noise ratio in 1986 68 4

E) I.D. chatter in 1986 8 1 F) Multiple Indications 11 2 G) Not confirmed by 8x1 - in both 1984 and 1986 86 11 374 60

• This data based on tubes included in Appendix III.

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. TDR 781 REVISION 1 PAGE 19 of 50 TABLE 2 STATISTICAL EVALUATION OF DEGRADED TUBES No. Inds No. Inds No. Inds Mean Std 1 T.W. 1 T.W. 1 T.W. Change Deviation Number Increased Decreased Unchanged 1 T.W. 1 T.W.

OTSG Indications 84-86 84-86 84-86 84-86 84-86 A 139 33 96 10 -3.0 6.1 B 13 6 3 4 +2.2 4.1 Both 152 39 99 14 -2.6 6.1 A&B No. Inds No. Inds No. Inds Mean Std Volts Volts Volts Change Deviation Increased Decreased Unchanged Volts Volts 84-86 84-86 84-86 84-86 84-86 A 139 27 85 27 .1 .2 B 13 0 13 0 .7 .5 Both 152 27 98 27 .2 .3 A&B 1420x qa

TDR 781 REVISION 1 PAGE 20 of 50

2. 3% RANDOM SAMPLE TUBES Examination Category A.2.

SCOPE 1

In OTSG "A", 479 tubes were examined.

In OTSG "B", 483 tubes were examined.

1 INCLUDED TUBES 3% of the tubes remaining in service in each OTSG are required to be examined according to T.S. 4.19. At least 50% of these tubes were selected from the high defect density area (periphery) of the OTSG. This area is defined to include all tubes outside the radius of the outer support rod

circle. The remainder of the 3% sample was selected throughout the tube i bundle. Note: The sample did not include degraded tubes which were all examined. The number of tubes included >3% of the 15,531 tubes in each OTSG

[ in addition to the degraded tubes.

, These tubes are identified in TR-008, Table A-1, Category 2.

I REASON FOR EXAMINATION

! The tubes in this sample have no history of degradation below the kinetic expansion. They are examined to determine if any degradation has occurred since the last examination.

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TDR 781 REVISION 1 PAGE 21 of 50 DATA RECORDING The data from the 540 H.G.S.D. examination of tubes in the peripheral (high defect density) area of the OTSG's is reported in Data Set 4.1. Data from the remainder of the 3% sample tubes is reported in Data Set 4.2. The 8x1 absolute data for indication confirmation is reporte'd in Data Set 3.0.

The relevant examination results for these tubes are contained in the Appendices and are identified as Exam. Cat. A.2..

RESULTS 1

In OTSG A no relevant indications >20% through wall were detectcd in 477 of the 479 tubes examined. One (1) tube, A-63-129, had multip., inner diameter indications >20% T.H. and <50% T.H. reported in the upper tube sheet and will be placed in the degraded tube population for the next examination.

One (1) tube A-94-126 had an indication >50% through wall in the upper tube sheet and was removed from service.

The 1984 data was reviewed for each of these tubes to determine if the indications had been present. In both cases the review showed the indications had been present but were not reported during previous examinations and did not show any continued degradation from 1984 to 1986.

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TDR 781 REVISION 1 PAGE 22 of 50 In OTSG B, no relevant indications 120% through wall were detected in 480 of the 483 tubes examined. Three (3) tubes had indications 120% T.H. and

<50% T.H. and will be placed in the degraded tube population for the next examination. Two (2) of these tubes B-30-68 and B-60-80 had indications below the upper tube sheet and one (1) tube B-104-77 had indications in the upper tube sheet. No tubes had indications which required their removal from service.

The 1982 baseline data was reviewed for each of these tubes. (Note:

Not all OTSG B tubes were examined in 1984.) The review showed that all of the indications had been present in 1982 but were not previously identified.

For tubes B-30-68 and B-68-80 no change was identified from 1982 to 1986. For tube B-104-77, the amplitude of the signal increased from 1982 to 1986 while the percent through wall remained constant.

Refer to Appendix II for the detailed results of the data review.

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TDR'781 REVISION 1 PAGE 23 of 50 B. EXAMINATIONS REQUIRED BY TR-008

1. SAMDLE, TUBES ADJACENT TO PLUGGED TUBES Examination Category B.I.

SCOPE In OTSG A, 71 tubes were examined.

In OTSG B, 114 tubes were examined.

INCLUDED TUBES Tubes in this category are located adjacent to plugged tubes which have not been stabilized at the elevation of their defect. The examination was required at specific elevations per TR-008, however, the entire length of tubing was examined as identified in Section III (Examination Extent) of this report.

These tubes are identified in TR-008 Table A-1, Categories Ib,c,g.

REASON FOR EXAMINATION Some concern exists that a plugged defective tube might shear at its defect location and damage adjacent tubes. To address this concern, a group of these " adjacent" tubes from both OTSG's have been selected for examination for evidence of wear from a failed tube end.

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TDR 781 REVISION 1 PAGE 24 of 50 DESCRIPTION OF HEAR Hear, if any, is assumed to be caused by contact with a sheared tube end and vibration caused by high cross flow. Some assumptions may be made about the geometry of the wear area.

Near from a sheared tube end would be confined to one side of the affected tube. Movement of the sheared tube end would be from side to side rather than up and down. Axial extent of the wear would be short compared to manufactured tube wall variations, but long compared to IGA pitting or IGSA cracking.

DATA RECORDING The data from the 200 kHZ 540 absolute and the 540 HGSD examinations is recorded in Data Set 2.0. The 8xl absolute data is recorded in Data Set 3.0.

In Data Set 2.0, the tubes from categories ib, ic, and lg (TR-008, Table A-1)

, are identified under Heat No. as 2.B 2.C, and 2.G. The relevant examination results for these tubes are contained in the Appendices and are identified as Exam. Cat. 8.1.

RESULTS No tubes were found to have any indication of wear. Indications detected in the 200 kHZ 540 absolute examination are shown in the data as ADR (absolute drift). These indications are typically confirmed in the 8x1 absolute data by four to eight coils and do not indicate a degraded 1420x qa

-, -. --- - - . - . _ . = , -

TDR 781 REVISION 1 PAGE 25 of 50 condition. This data indicates much greater circumferential extent than the expected wear geometry. These indications are scattered throughout the l population of all examined tubes which indicates some normal variation in tube wall thickness, rather than local wear, as the source of the indication.

The examinations performed for other signs of degradation identified no indications which required the tube to be plugged. Three (3) tubes A-96-32 B-146-37 and B-150-25 did have indications of 120% and <50% T.W. reported and will be added to the degraded tube population. In all cases, the indications were inner diameter initiated and occurred below the upper tube sheet.

The previous data was reviewed for tube B-146-37. This review showed the indication had been present in 1982 but was not previously recorded. No changes were noted from 1982 to 1986.

The results of the data review are included in Appendix II.

. 2. SAMPLE. TUBES IN HIGH PLUG DENSITY AREA Examination Category B.2.

SCOPE In "A" OTSG, 45 tubes were examined.

In "B" OTSG, 56 tubes were examined.

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. -..v.--. -. , ,- ~ -- ._ -.- ----~._% ,,--e-.c... - - - - - - - - , , , -

--,---..r-.,--- - - -

T TDR 781 REVISION 1 PAGE 26 of 50 l

INCLUDED TUBES Originally, during the 1983 post repair baseline, this category consisted of a selection of more than 50 tubes from the high plug density areas of each OTSG. Plugging after the 1984 examination has reduced the sample size to 45 in OTSG "A" and 56 in OTSG "B".

These tubes are identified in TR-008, Table A-1, Category le.

REASON FOR EXAMINATION Since an area of the OTSG with a high density of plugged tubes may produce operating conditions that differ somewhat from normal (slightly cooler, for instance), monitoring these areas for any degradation is desirable.

DATA RECORDING Data from the 540 HGSD examination is reported in Data Set 2.0. In this data set, these tubes are listed as Heat No. 2.E to identify them as Category le tubes from TR-008 Table A-1. Data from the 8xl absolute exam is reported in Data Set 3.0. The relevant examination results for these tubes are contained in the Appendices and are identified as Exam. Cat. B.2.

RESULTS No confirmed indications 120% through wall were identified in this examination category.

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TDR 781 REVISION 1 PAGE 27 of 50

3. KINETIC EXPANSION AREA INDICATIONS Examination Category B.3.

SCOPE In "A" OTSG, 10 tubes were examined.

In "B" OTSG, 19 tubes were examined.

INCLUDED TUBES The 1983 8xl absolute pre-service examination of these tubes disclosed indications in the 6" qualifying length of the kinetic expansion. The indications were evaluated as acceptable and the tubes remained in service with the requirement that periodic in-service examination would be performed.

These tubes are identified in TR-008, Table A-1, Category Id.

REASON FOR EXAMINATION Examination of these tubes is conducted to assure that the indications in the 6" qualified length remain within acceptable limits. j l

EXAMINATION Since the 540 HGSD exam is not effective at the kinetic expansion l l

transition and in the expanded zone, this area is examined using the 8xl absolute probe. The area of interest is from the entrance of the upper tube I

sheet through the 6" qualifying length.

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TDR 781 REVISION 1 PAGE 28 of 50 DATA RECORDING Data from the 8x1 absolute exam is reported in Data Set 10.0. These tubes are also included in several other categories, therefore no individual Heat No. was assigned to identify the data set. The relevant examination results for these tubes are contained in the Appendices and are identified as Exam. Cat. B.3.

. RESULTS No tubes were removed from service as a result of this examination. For 27 of the 29 tubes, the indications were 1 or 2-co11s in both 1983 and 1986 and in one (1) tube the 1983 indication was not detectable in 1986. In one (1) tube, B-112-5, a 3-coll indication was identified in 1986 in an area where two (2) 1-coll indications had been identified in 1983. This indication was determined to be acceptable based on location. GPUN considers the 1986 results to be consistent with the 1983 results and therefore no additional evaluations were required.

4 1

l l

)

l 1420x qa 1

\

TDR 781 l REVISION 1 PAGE 29 of 50  !

4. 3% SAMPLE UPPER TUBE SHEET ONLY Examination Category B.4.

SCOPE In "A" OTSG, 447 tubes were examined.

In "B" OTSG, 502 tubes were examined.

INCLUDED TUBES In addition to the tubes with previously identified indications in the kinetic expansion zone (Examination Category B.4) above, TR-008 required the examination of the tubing from the upper tube sheet entrance through the 6" qualification length of 3% of the tubes remaining in service in each OTSG.

These tubes are identified in TR-008, Table A-1, Category if.

REASON FOR EXAMINATION The tubes in this sample have no history of degradation. They are examined to assure that no previously unideiltified degradation mechanism is active in the kinetically expanded areas of the tubes.

EXAMINATION The 8x1 absolute probe was used to examine the length of tubing from the bottom of the upper tube sheet to the top of the 6" qualified expansion length.

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TDR 781 REVISION 1 PAGE 30 of 50 DATA RECORDING Data from the 8xl absolute examination is recorded in Data Set 10.0.

These tubes are listed as Heat No. 10.F to identify them as category if tubes from TR-008, Table A-1. The relevant examination results for these tubes are contained in the Appendices and are identified as Exam. Cat. B.4.

RESUL1S Of the 447 tubes examined in OTSG A, one (1) tube, A-49-99, was removed from service due to a 1-coll indication. This indication was .1" below the kinetic expansion and the percent through wall penetration could not be determined. The tube was therefore preventatively plugged. Nine (9) other tubes had 1 or 2-coll indications reported within the area of interest.

Of the 502 tubes examined in OTSG B, one (1) tube, B-98-84, was removed from service because of a 2-coll indication at the kinetic expansion transition. This tube was preventatively plugged because the percent through wall penetration could not be determined. In addition, seven (7) other tubes had I or 2-coli indications reported in the area of interest and one (1) tube had a 3-coll indication.

For the two (2) tubes removed from service the 1983 post kinetic expanston baseline data was reviewed. This review showed no detectable indications. Since the remaining indications were consistent with the 1983 examination results, no additional reviews were performed.

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TDR 781 REVISION 1 PAGE 31 of 50 C. GPUN ELECTIVE EXAMINATIONS

1. TUBES WITH INDICATIONS NOT CONFIRMED BY 8x1 ABSOLUTE EXAM IN 1984 Examination Category C.I.

SCOPE In OTSG "A", 228 tubes were examined.

In OTSG "B", 50 tubes were examined.

INCLUDED TUBES

~

a All tubes which had 540 H.G.S.D. Indications in the 1984 examination but which were not confirmed by the 8x1 absolute exam, were included in this category.

REASON FOR EXAMINATION These tubes were examined to provide an additional level of confidence that the indications are non-relevant.

i l

DATA RECORDING 1

The data from the 540 HGSD exam is reported in Data Set 1.1. The 8x1

- absolute data is reported in Data Set 3.0. The relevant examination results for these tubes are in the Appendices and are identified as Exam. Cat. C.I.

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TDR 781 REVISION 1  !

PAGE 32 of 50 RESULTS In OTSG A, the indications in 203 of the 228 tubes continued to appear as non-relevant. The evaluations of the 25 remaining tubes showed the indications were relevant indications and the tubes were dispositioned as follows:

Three (3) tubes (A-2-8, A-54-2, A-104-27) were determined to have relevant, inner diameter initiated indications 250% T.H. and the tubes were removed from service. The indications were located between the 14th T.S.P. and the kinetic expansion and were limited to 1-coll in all cases.

1 One (1) tube, A-77-6, was determined to have a relevant, inner diameter initiated, 1-co11 Indication 120% through wall in the freespan above the 15th T.S.P. This tube is located along the inspection lane and was therefore removed from service.

One (1) tube, A-14-75, was preventatively plugged due to a 2-co11 indication above the third tube support plate. This indication had a poor ' signal to noise ratio on the .540" H.G.S.D. examination and the percent through wall could not be determined.

Twenty (20) tubes had inner diameter indications 120% and <50% through wall which were determined to be relevant indications. The indications in all of these tubes were limited to 1-co11. These tubes will be treated as degraded tubes during future examinations.

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TDR 781 REVfSION 1 PAGE 33 of 50 In OTSG B, the indications in 48 of the 50 tubes were confirmed as non-relevant indications. The other two (2) tubes had indications which were determined to be relevant and were dispositioned as follows.

Two (2) tubes had 1-co11 Indications >20% and <50% through wall and will be treated as degraded tubes during future examinations.

To determine if the newly confirmed indications had changed from 1984 to 1986, GPUN reviewed the 1984 data for the five (5) tubes which were plugged.

This review showed no apparent change in the .540" H.G.S.D. Indications from 1984 to 1986 for any of the five (5) tubes. A review of the 1984 8xl data for four (4) tubes showed that indications in two (2) tubes A-2-8 and A-54-2 had been present but were not previously recorded and for two (2) tubes, A-77-6 and A-104-27, no indications could be identified during the review. For tube A-14-75 no previous 8xl data was available for the area of interest. These .

results are consistent with the results of previous evaluations and therefore do not indicate continuing degradation.

The details of these evaluations are shown in Appendix II.

i 1420x qa

TDR 781 REVISION 1 PAGE 34 of 50

2. LANE / WEDGE AREA TUBES Examination Category C.2.

SCOPE In "A" OTSG, 417 tubes were examined.

In "B" OTSG, 473 tubes were examined.

INCLUDED TUBES The initial scope included all tubes in the Lane and Hedge area. The tubes in the 3 rows on each side of the tube lane, Rows 73, 74, 75, 77, 78, and 79, from Tube 1 to the center of the OTSG, are the lane tubes. The tubes in the wedge formed by drawing a line from Row 66 Tube 1 to Row 75 Tube 15 and from Row 86 Tube I to Row 77 Tube 15 are the wedge tubes.

Following the detection of indications in the initial sample, the scope of the examination in OTSG B was expanded to include an additional 46 tubes in rows 71, 72, 80 and 81. These tubes were examined to assure the degradation was not present outside the lane area.

l REASON FOR EXAMINATION OTSG's have typically experienced degradation in the lane / wedge tubes.

In consideratton of the possibility of accelerated degradation in this area, GPUN elected to examine all of the lane / wedge tubes independent of the Tech.

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l TDR 781  !

REVISION 1 l PAGE 35 of 50 l Spec. random sample. Note: Two tubes in the wedge area of each OTSG, "A" Row 71 Tubes 6 and 7 and "B" Row 71 Tubes 6 and 7, were inadvertently not examined. Since no degradation was identified in the tubes adjacent to these tubes the results of the examination are not affected.

. DATA RECORDING The data from the 540 HGSD examination is reported in Data Set 6.0. The confirming 8xl absolute data is reported in Data Set 3.0. The relevant examination results for these tubes are included in the Appendices and are identified as Exam Cat. C.2.

RESULTS In OTSG A, three (3) of the 417 tubes examined had inner diameter indications which required them to be dispositioned as follows:

One (1) tube, A-74-31, had multiple inner diameter indications in the upper tube sheet which exceeded 50% through wall. This tube was removed from service.

Two (2) tubes, A-74-28 and A-78-31, had inner diameter indications >20%

and <50% through wall in the upper tube sheet. These tubes will be treated as degraded tubes during future examinations.

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TDR 781 REVISION 1 PAGE 36 of 50 A review of the 1984 data was performed to determine if the indications had changed from 1984 to 1986. This review showed no change in the ECT signals for any of the three (3 ) tubes.

In OTSG B, eitven (11) of the 473 tubes examined had indications which required them to be dispositioned. Nine (9) tubes were plugged and two (2) tubes will be treated as degraded tubes during future examinations. The breakdown of this disposition is as follows.

One (1) tube, B-73-1, was removed from service due to a 1-coil indication >20% and <50% T.H. located above the 15th T.S.P. A review of the 1984 data for this tube revealed the indication had been present and there was no change from 1984 to 1986.

One (1) tube, B-77-18, was removed from service due to. indications 150%

through wall above the 15th T.S.P. This tube had two (2) 2-co11 and one (1) 1-co11 indications reported. A review of the 1982 data showed no apparent change in the indications from 1982 to 1986.

Five (5) tubes had inner diameter indications 150% through wall in the upper tube sheet. These tubes, B-77-57, B-78-18, B-78-20, B-78-57 and

- B-79-57, were removed from service. A review of the previous data, 1982 and 1984, showed a definite change in the amplitude and signal to noise ratio of the indications as compared to the 1986 data. The poor signal to noise of the 1982 and 1984 data prevents making accurate determinations of the peecent through wall values.

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TDR 781 REVISION 1 PAGE 37 of 50 Two (2) tubes, B-77-14 and B-79-8, had indications at the entrance to the upper tube sheet and were removed from service. The indication in B-77-14 was determined to be near through wall while the indication in B-79-8 could not be evaluated for percent through wall. The evaluation of these two (2) tubes and the review of the previous data are discussed in detail in Section V of this report.

Two (2) tubes, B-73-18 and B-74-18, had indications 120% and <50%

through wall reported in the upper tube sheet. These indications were both inner diameter initiated. The tubes will be treated as degraded tubes during future examinations. A review of the 1982 data for these tubes showed the indication amplitude and signal to noise ratio improved from 1982 to 1986 making them more detectable. The poor signal to noise ratio of the 1982 indications prohibits making percent through wall comparisons between 1982 and 1986.

The details of the data reviews are contained in Appendix II.

l l

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TDR 781 REVISION 1 PAGE 38 of 50

3. GAP TUBES Examination Category C.3.

SCOPE In "A" OTSG, 7 tubes were examined.

In "B" OTSG, 10 tubes were examined.

s-INCLUDED TUBES In some tubes the intergranular attack at the mechanical roll (expansion) transition, about i 1/2" from the tube end in the upper tube sheet, caused 360* cracking in November 1981. Since the tubes are in tension when cold, this crack allowed these tubes to separate and created a gap.

REASON FOR EXAMINATION Since the gap in the tube wall exposes the carbon steel tube sheet to ,

primary coolant (a buffered solution of boric acid), a sample of these tubes is being monitored for any sign of degradation. (Including constricted tubing.)

DATA RECORDING The data from the 540 HGSD exam is reported in Data Set 11.0. Any 8xl absolute data for these tubes would appear in Data Set 3.0. The relevant l

l 1420x qa

TDR 781 REVISION 1 PAGE 39 of 50 examination results for these tubes are included in the Appendices and are identified as Exam. Cat. C.3.

RESULTS No confirmed indications 120% through wall were identified in either the portion of tubing below or inside the tubesheet. 1 I

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TDR 781 REVISION 1 PAGE 40 of 50

4. SPECIAL CATEGORY TUBES Examination Category C.4.

SCOPE One tube was examined in "A" OTSG, Row 20 Tube 6.

One tube was examined in "B" OTSG, Row 99 Tube 5.

INCLUDED TUBES A 540 H.G.S.D. eddy current probe became lodged in the tube in "A" OTSG and could not be removed.

The "B" OTSG tube was inadvertently plugged in the lower tube sheet following the 1984 ECT examinations.

REASON FOR EXAMINATION Since the top of the "B" OTSG tube is open, it is full of primary coolant. It is being examined to ensure that degradation does not initiate under the condition of zero flow.

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TDR 781 REVISION 1 PAGE 41 of 50 EXAMINATION The 540 HGSD examination was conducted through the full length of the "B" OTSG tube to detect any degradation. Any indications would then have been subject to 8xl absolute examination for confirmation. The OTSG "A" tube was examined from the stuck probe to the kinetic expansion to permit dispositioning the tube.

DATA RECORDING The data for the OTSG "B" tube is reported in Data Set 11.1. The data for the OTSG "A" tube is recorded on tape number 1000. The relevant examination results for these tubes are included in the Appendices under Exam.

2 Cat. C.4.

RESULTS No indications >20% T.H. were found in these tubes.

The "A" tube was plugged to prevent the probe head from moving out of the OTSG during plant operation.

The status of the "B" tube was not changed.

1420x.qa

TDR 781 REVISION 1 PAGE 42 of 50 V. DISCUSSION OF RESULTS Characterization of Indications The indications reported during 1986 were characterized by location, percent through wall, amplitude, and circumferential extent. This characterization showed that the indications are inner diameter initiated and are located towards the top and the outer periphery of the OTSGs. This is the same distribution of indications as identified during both the 1982 and 1984 examinations. .

The amplitudes (voltage) of the 1986 Indications were typically small

(<2 volts) which is also consistent with both the 1982 and 1984 results. The characterization by percent through wall shows most of the indications are partial through wall with only four (4) tubes having indications >90% through wall (all in the upper tube sheet). This is consistent with the 1984 examination results in which only 2% of the indications were >90% through wall. By contrast, approximately 40% of the 1982 indications were >90%

through wall.

The circumferential extent of the 1986 indications was typically 1 or 2 coils with no indications which exceed 3-coils. This is consistent with the 1984 examination results and showed a decrease from the circumferential extent of the 1982 indications.

To further characterize the 1986 indications by axial location the tubes which were removed from service are shown on Table 3 and are discussed in the following sections.

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TDR 781 REVISION 1 PAGE 43 of 50 TABLE 3 TUBES REMOVED FROM SERVICE Indication Percent Through Wall

<50% T.H. >50% T.H.  % T.W. Indeterminate Tube I.D. Cat.*  % Colls Tube I.DT Cat.* % Colls Tube I.D. Cat.* % Colls I Free A-77-6 C.l. 36 1 A-2-8 C.l. 73 1 A-14-75 C.I. S/N 2 N Span B-73-1 C.2. 33 1 A-54-2 C.l. 63 1 D B-77-18 C.2. 66 2 I

C A Upper A-74-31 C.2. 97 1 B-98-84 B.4. N/A 2 T Tube A-94-126 A.2. 74 1 A-49-99 B.4. N/A 1 I Sheet A-104-27 C.I. 70 1 0 B-78-18 C.2. 99 3 N B-79-57 C.2. 93 2 B-77-57 C.2. 63 2 B-78-20 C.2. 66 2 B-78-57 C.2 56 2 L B-94-3 A.I. 50 2 0 B-103-5 A.l. 56 2 C

A T Upper B-77-14 C.2. 97 3 A-104-123 A.I. DTS 2 I Tube B-43-10 A.l. DTS 1 0 Sheet B-79-8 C.2. DTS 1 N Entry B-89-5 A.I. DTS 1 B-94-4 A.1. DTS 1

• Exam. Cat. denotes section of report in which detailed reviews are discussed.

NOTE: Tube A-20-6 was plugged due to a stuck probe and does not appear on this table.

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TDR 781 REVISION 1 PAGE 44 of 50 Evaluation of Freespan Indications Six (6) tubes, four (4) in OTSG A and two (2) in OTSG B, were plugged due to indications in the freespan (between the tubesheets) portion of the tubes.

In all cases the indications appear inner diameter initiated and were limited to 1 or 2 coils in circumferential extent. The indications in five (5) of the tubes were located above the 14th T.S.P. and one (1) was between the 3rd and 4th T.S.P.

Two (2) of the tubes were located in the lane / wedge region and were plugged for (40% through wall indications above the 15th T.S.P. In both cases the indications were I coil on 8x1.

Three (3) of the tubes had indications >50% through wall. Two were 1-coll indications and the other was a 2-coll indication by 8x1.

The indication in the sixth tube had a poor signal to noise ratio and was ,

<1 volt in amplitude and could not be evaluated to determine the percent through wall penetration. This tube was conservatively plugged for the corresponding 2-coll indication on 8x1.

A review of the previous data for these six tubes showed no change when compared to the 1986 data. These tubes are identified in Table 3 and are discussed in more detall in the individual examination categories in which they were examined.

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TDR 781 REVISION 1 PAGE 45 of 50

. Evaluation of Tube Sheet Indications Twelve (12) tubes, four (4) in OTSG A and eight (8) in OTSG B, were plugged due to indications which were reported from above the secondary face of the upper tube sheet up to and including the transition to the kinetically expanded region.

The indications in eleven (11) of the tubas were 1 or 2-coils while

_one (1) tube was plugged due to a 3-coil indication. The percent through wall penetration of these indications ranged from 50-99%.

A review of the previous data showed most of the indications had been present during the previous examinations. A comparison of the previous data to the 1986 data showed no change in the ECT signals for about half of the indications reviewed. The ECT signals in the remaining tubes showed an increase in the amplitude and signal to noise ratio of the indications since the last examination. This type of change in the ECT signals was also identified during the 1984 examinations and is discussed in detall in TDR 652. (Reference 6) 1420x qa

TDR 781 REVISION 1 PAGE 46 of 50 Evaluation of Indications at the Tube Sheet Entry Six (6) tubes were removed from service, one (1) in OTSG A and five (5) in OTSG 8, because of indications at the entrance to the upper tube sheet. In five (5) of the tubes the indications were distorted signals and no percent through wall determinations could be made. The other indication was determined to be near through wall (97%). The indications were confirmed by the 8x1 absolute and had circumferential extents of 1, 2, and 3 coils.

The indications occur at the entrance to the upper tube sheet. This area has previously been identified by GPUN as an area of reduced eddy current capabilities using the .540" H.G.S.D technique. The reduced capabilities in this area are caused by " saturation" of the ECT instrument which prevents

" mixing out" the tubesheet entry signal using multi-frequency techniques.

This " saturation" is discussed in TDR 423 (Reference 3). During normal examinations, the cain of the ECT system would be reduced to eliminate the

" saturation" and permit frequency mixing to eliminate the tube sheet entry signal.

During the 1986 examinations this limitation is combined with an apparent change in the tube diameter which produces interfering signals and prevents mixing out the tubesheet entry signals. Note: The diameter change is minor in nature as the .540" diameter probe is not restricted.

1420x qa l

l

TOR 781 REVISION 1 PAGE 47 of 50 These combined limitations prevent GPUN from using conventional ECT techniques (phase analysis) to determine both the origin, 0.0. versus I.D. and the percent through wall penetration of the degradation. However, the technique can be used to identify distorted entry signals for additional examinations.

The method used to screen the 1986 indications was to record all distorted tubesheet entry signals (.540 H.G.S.D) and retest the tubes using the 8xl absolute probe which is not affected as strongly by the tube sheet entry. This method identified the distorted tube sheet entry signals in five (5) of the six (6) tubes (B-77-14, B-43-10, B-79-8, B-89-5, and B-94-4) which were plugged. Ten (10) other tubes, eight (8) in OTSG A and two (2) in OTSG 8, had DTS indications and were screened for examination by the 8xl absolute probe. The indications in these tubes were determined to be non-relevant.

In one (1) tube, A-104-123, no apparent distortion of the tubesheet entry was identified during the .540 H.G.S.D examination however the 8xl examination showed a 2-coll indication at the tube sheet entry. To determine if this situation was present in other tubes GPUN reviewed the results of the 8xl examination of the upper tube sheets (Exam. Cats. B.3 and B.4). This review showed no other indications at the tubesheet entry for the 979 tubes examined.

Of the sixteen (16) tubes evaluated for indications at the tube sheet entrance, thirteen (13) are in the lane / wedge area and the other three (3) are in the outer periphery of the OTSG. Although the origin of the indications 1420x qa 4

TOR 781 REVISION 1 4 PAGE 48 of 50 l was indeterminate, five (5) of the tubes which were plugged had I.D.

Indications within 3 inches of the tube sheet entry. These indications ranged from 26-46% through wall and were 1 and 2 coils in circumferential extent.

For the six (6) tubes which were plugged, GPUN reviewed the previous ECT data. This review showed the ECT indications had remained unchanged in three (3) tubes (B-43-10, B-89-5, B-94-4) while change was identified in three (3) tubes (A-104-123 B-77-14, B-79-8). The combined effects of the tube sheet e_ntry, and the interfering signals which were previously discussed, prevent making exact determinations of the cause or degree of change in the condition of the tubes. More complete details of the data reviews are provided in Appendix II.

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TDR 781 REVISION 1 1-PAGE 49 of 50 VI. CONCLUSIONS Base'd on the results of the 1986, outage SM, ECT examinations land data I evaluations, GPUN was able to reach the following conclusions: ,

1) Based on the evaluation of the previously degraded tubes, there is 4

no evidence of ongoing corrosion.

2) The examination of the 3% random sample showed no evidence of new degradation.

3) The examinations performed as a follow up to the 1982 repairs showed no evidence of wear type degradation and no adverse affects from the localized high plug density areas.

1 c

4) The results of the 8xl examination of the upper tube sheet and i

kinetic expansion region were consistent with the 1983 post-expansion baseline results.

5) The lar ' wedge area has a higher than average occurrence of defects and GPUN will continue to' monitor this area during the next examination.

, 6) The characterization of the indications and the reviews of the previous data show the 1986 examination results are consistent with the 1984 examination results.

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TDR 781 REVISION 1 PAGE 50 of 50 VII. REFERENCES

1. GPUN Topical Report 008, Rev. 3, T. M. Moran, " Assessment of TMI-1 Plant Safety for Return to Service After Steam Generator Repair,"

August 19, 1983.

2. Appendix A to the TMI-1 Operating License, Amendment 116. Technical Specification 4.19, 04/18/86.

3. GPUN TDR 423, Rev. 1. R. Barley, J. Janiszewski, G. Rhedrick, M.

Torborg, "Three Mlle Island - Unit 1 OTSG Tubing Eddy Current Program Qualification," 03/15/84.

4. GPUN TDR 642, Rev. 2, M. Torborg, G. Rhedrick " Qualification of Conversion Curve for Inner Diameter Discontinuities," 10/31/85.

5. Three Mlle Island Nuclear Station Unit No. 1 Surveillance Procedure 1300-48, Rev. 2, " Eddy Current Examination of CTSG," 03/21/86.

6. GPUN TDR 652, Rev. 2 G. E. Rhedrick, M. T. Torborg, D. L. Langan,

" Evaluation of the 1984 Required Technical Specification Examination for the TMI-l OTSG." 12/02/85.

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TDR 781 REVISION 1 APPENDIX I PAGE 1 of 11 APPENDIX I ECT EXAMINATION DATA SUMMARIES TABLE OF CONTENTS Pages LIST OF TUBES REMOVED FROM SERVICE (OTSG A) 2 LIST OF TUBES REMOVED FROM SERVICE (OTSG B) 3 TUBES TO BE ADDED TO THE DEGRADED 4-S TUBE POPULATION (OTSG A)

TUBES TO BE ADDED TO THE DEGRADED 6 TUBE POPULATION (OTSG B)

INDICATIONS IN THE KINETIC EXPANSION 7 ZONE (PREVIOUSLY UNDETECTED) OTSG A INDICATIONS IN THE KINETIC EXPANSION 8

~

ZONE (PREVIOUSLY UNDETECTED) OTSG B INDICATIONS IN THE KINETIC EXPANSION 9 ZONE (PREVIOUSLY DETECTED) OTSG A INDICATIONS IN THE KINETIC EXPANSION 10-11 ZONE (PREVIOUSLY DETECTED) OTSG B 1426x qa

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TDR 781 REVISION 1 APPENDIX I PAGE 2 of 11 LIST OF TUBES REMOVED FROM SERVICE (OTSG A)

Tube I.D. Exam. ECT Results OTSG Row Tube Cat. .540 H.G.S.D. 8x1 Absolute Location Origin % T.H. Volts # Colls Volts Phase A 2- 8 C.l. 15+19.9 ID 73 1.3 1 .5 3 15+19.1 ID 26 .9 1 .2 1 15+18.6 ID 30 1.1 1 .2 2 15+08.4 ID 33 .8 1 .6 1 A 14- 75 C.l. 03+18.9 ID S/N .7 2 1.1 3 A 49- 99 B.4. US+06.9 ID N/A .7 1 1.0 2 A 54- 2 C.l. 14+07.9 ID 36 .9 1 .5 2 14+05.8 ID 63 .8 1 .4 1 14+03.3 ID 60 1.3 1 1.0 1 A 74- 31 C.2. US+03.1 ID 53 1.3 1 .4 1 US+05.5 ID 97 1.4 1 .5 2 A 77- 6 C.l. 15+12.9 ID 36 .9 1 .6 ' 1 A 94-126 A.2. US+01.7 ID 74 2.9 1 .9 1 A 104- 27 C.I. US+05.3 ID 33 1.9 1 .7 1 US+05.7 ID 70 1.3 1 1.2 1 A 104-123 A.I. US+00.0 -

DTS -

2 4.4 4 US+00.5 -

N/A -

2 2.3 2 US+01.2 ID 46 1.6 2 1.6 1 15+42.3 ID 30 1.0 1 .6 1 NOTE: Tube A-20-6 was also removed from service but had no ECT indications.

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TDR 781 REVISION 1 APPENDIX I PAGE 3 of 11 LIST OF TUBES REMOVED FROM SERVICE (OTSG B)

Tube I.D. Exam. ECT Results OTSG Row Tube Cat. .540 H.G.S.D. 8xl Ab;olute Location Origin % T.W. Volts # Coils Volts Phase B 43- 10 A.I. US+00.0 -

DTS 2.2 1 2.5 2 US+00.4 ID 26 2.4 1 .8 1 15+41.5 ID 36 2.1 1 .8 1 B 73- 1 C.2. 15+03.9 ID 33 1.2 1 1.0 2 8 77- 14 C.2. US+00.0 -

97 3.6 3 3.1 2 US+02.8 ID 30 1.6 1 .9 2 B 77- 18 C.2. 15+44.6 ID 66 3.t 2 4.5 2 15+44.3 ID 26 2.5 1 2.1 1 15+44.0 ID 60 2.1 2 2.0 1 8 77- 57 C.2. US+05.2 ID 63 1.7 2. 2.0 2 8 78- 18 C.2. US+02.7 ID 99 1.6 3 3.3 2 B 78- 20 C.2. US+04.8 ID 66 2.2 2 2.1 1 8 78- 57 C.2. US+05.8 ID 30 1.7 2 1.7 1 US+06.2 ID 56 2.4 2 3.9 2 8 79- 8 C.2. US+00.0 -

DTS 1.6 1 .8 2 8 79- 57 C.2. US+01.7 ID 93 2.4 2 1.3 1 B 89- 5 A.I. US+00.0 -

DTS 4.5 1 3.6 2 15+45.8 ID 26 1.8 1 .8 1 8 94- 3 A.I. 15+45.5 ID 26 .9 1 1.0 1 15+45.3 ID 30 1.8 1 1.3 1 US+00.4 ID 40 1.9 2 1.3 1 US+02.3 ID 40 2.1 2 1.7 2 US+05.3 ID 50 1.6 2 1.3 2 US+05.7 ID 40 2.4 2 1.9 2 US+06.8 ID 20 1.7 1 1.1 1 B 94- 4 A.1. US+00.0 -

DTS 2.2 1 1.9 1 15+45.8 ID 36 1.6 1 1.4 1 B 98- 84 B.4. US+07.0 - N/A - 2 1.3 2 B 103- 5 A.I. US+ 5.8 ID 56 2.9 2 2.0 2 1426x qa

TDR 781 REVISION 1 APPENDIX I PAGE 4 of 11 .

TUBES TO BE ADDED TO THE DEGRADED TUBE POPULATION (OTSG A)

Tube I.D. Exam. ECT Results OTSG Row Tube Cat. .540 H.G.S.D. 8x1 Absolute Location Origin % T.H. Volts # Coils Volts Phase A 5- 9 C.l. 15+39.7 ID 36 4.2 1 .7 1 A 8- 43 C.1. 15+23.5 ID 20 1.2 1 .5 1 A 23- 3 C.I. 15+31.0 ID 23 .9 1 .4 1 A 35- 83 C.1. 15+35.4 ID 46 1.4 1 .8 1 A 42- 2 C.I. 15+41.9 ID 46 1.2 1 .3 1 US+0f,.1 ID 23 .7 1 .2 1 US+05.9 ID 30 .7 1 .2 1 A 63-129 A.2. US+02.6 ID 40 1.5 1 .3 1 US+03.6 ID 33 1.2 1 .1 1 US+04.2 ID 36 1.1 1 .3 1 US+04.7 ID 46 1.3 2 .3 '2 A 66- 1 C.I. 04+25.6 ID 30 2.5 1 .8 1 A 74- 28 C.2. US+05.5 ID 43 2.8 1 .4 1 A 74- 54 C.I. US+03.3 ID 36 1.3 1 .5 1 A 78- 31 C.2. US+05.7 ID 20 1.0 1 .6 1 A 81- 92 C.I. 15+41.7 ID 23 1.2 1 .4 1 US+00.8 ID 20 1.0 1 .7 1 A 82- 32 C.1. US+06.1 ID 26 2.3 1 .4 1 A 88- 78 C.I. 15+33.5 ID 23 1.1 1 .5 1 A 95-111 C.I. 15+40.0 ID 23 1.1 1 .3 1 A 96- 32 B.I. 15+37.3 ID 26 1.5 1 .6 2 A 99- 17 C.I. 15+32.6 ID 23 1.5 1 .5 1 A 101- 51 C.I. US+01.3 ID 26 1.2 1 .5 1 US+04.0 ID 33 1.5 1 .4 1 US+04.9 ID 36 1.0 1 .7 1 A 104- 75 C.I. 15+39.1 ID 30 1.0 1 .4 1 A 114- 93 C.I. 15+40.6 ID 26 1.3 1 .3 1 1426x qa

TDR 781 REVISION 1 APPENDIX I PAGE 5 of 11 TUBES TO BE ADDED TO THE DEGRADED TUBE POPULATION (OTSG A) (CONTINUED)

Tube I.D. Exam. ECT Results OTSG Row Tube Cat. .540 H.G.S.D. 8x1 Absolute Location Origin % T.N. Volts # Colls Volts Phase A 115- 26 C.I. 15+25.4 ID 36 1.0 1 .6 1 A 115- 49 C.I. 06+30.3 ID 23 1.8 1 .5 1 A 119-107 C.l. 15+38.6 ID 20 1.7 1 .8 1 A 126- 97 C.I. 15+26.5 ID 23 1.1 1 .6 1 A 151- 12 C.l. 12+34.4 ID 36 1.3 1 .4 1 i

l 1426x qa

TDR 781 REVISION 1 APPENDIX I -

PAGE 6 of 11 TUBES TO BE ADDED TO THE DEGRADED TUBE POPULATION (OTSG B)

Tube I.D. Exam. ECT Results OTSG Row Tube Cat. .540 H.G.S.D. 8x1 Absolute Location Origin % T.H. Volts # Colls Volts Phase B 30- 13 C.1. 15+44.7 ID 30 1.9 1 1.0 1 B 30- 68 A.2. 14+12.8 ID 46 .9 1 .4 2 8 68- 80 A.2. 11+12.0 ID 23 1.0 1 1.1 1 B- 73- 18 C.2. US+05.6 ID 43 2.9 1 1.1 1 B 74- 18 C.2. US+06.4 ID 36 1.7 1 1.2 2 B 104- 77 A.2. US+04.3 ID 26 1.7 1 .4 1 B 105- 8 C.I. US+06.6 ID 26 1.2 1 .7 i B 146- 37 B.I. 12+07.0 ID 26 .9 1 .5 1 B 150- 25 B.I. 07+30.8 ID 26 1.1 1 .3 1 1

1426x qa

TDR 781 REVISION 1 APPEND 7X I PAGE 7 of_J]

INDICATIONS IN THE KINETIC EXPANSION ZONE (PREVIOUSLY UNDETECTED)*

OTSG A ECT Results Tube I.D. Kinetic Expansion (1) 8 x 1 Indications OTSG Row Tube Transition Elevation Elevation # Coils Volts Phase A 21- 79 US+02.0 US+07.5 1 1.9 1 A 49- 99(2) US+07.0 US+06.9 1 1.0 2 A 56-119 US+02.1 US+08.0 1 .7 ,

1 A 56-124 US+07.0 US+13.0 2 .9 3 A 75- 38 US+07.1 US+12.1 1 .8 2 A 77-119 US+02.0 US+05.5 1 ~.9 1 A 77-123 US+07.0(N) US+02.1 1 .6 2 A 112- 40 US+06.9 US+12.9 1 .9 1 A 112- 46 US+07.2 US+12.4 1 .6 2 A 112-106 US+02.0 US+02.7 2 .9 3 Notes:

(1) The kinetic expansion transition elevation is determined through

, the ECT examination. (N) indicates the elevation was not measured but represents the nominal location.

(2) Tube was subsequently plugged.

This table includes only indications reported during the 3%

sample tubesheet examinations (Exam. Cat. B.4). Indications i similar to these were identified during other 8xl examinations I and were dispositioned according to the acceptance criteria.

For the purpose of this examination the kinetic expansion zone includes the portion of tube from the secondary face of the U.T.S. up to and including 6 inches of expanded tube.

1426x qa

TDR 781 REVISION 1 APPENDIX I PAGE 8 of 11 INDICATIONS IN THE KINETIC EXPANSION ZONE (PREVIOUSLY UNDETECTED)*

OTSG B ECT Results Tube I.D. Kinetic Expansion (1) 8 x 1 Indications OTSG Row Tube Transition Elevation Elevation # Coils Volts Phase B 21- 1 US+02.1 US+07.6 2 2.9 2 B 35- 8 US+02.2 US+07.5 2 10.3 3 B 35- 44 US+07.0 US+08.1 1 1.6 1 B 49- 19 US+07.2 US+12.4 2 1.8 2 B 63- 43 US+07.0 US+10.4 1 1.3 1 B 75- 44 US+06.9 US+07.6 1 1.0 1 B 84- 47 US+07.0 US+08.5 1 2.3 1 B 98- 84(2) US+07.0 US+07.0 2 1.3 2 B 112- 87 US+06.9 US+11.9 3 1.0 2 Notes:

(1) The kinetic expansion transition elevation is determined through the ECT examination. (N) indicates the elevation was not measured but represents the nominal location.

(2) Tube was subsequently plugged.

This table includes only indications reported during the 31 sample tubesheet examinations (Exam. Cat. B.4). Indications similar to these were identified during other 8x1 examinations and were dispositioned according to the acceptance criteria.

For the purpose of this examination the kinetic expansion zone includes the portion of tube from the secondary face of the U.T.S. up to and including 6 inches of expanded tube.

1426x qa

TDR 781 REVISION 1 APPENDIX I PAGE 9 of 11 INDICATIONS IN THE KINETIC EXPANSION ZONE (PREVIOUSLY DETECTED DURING 1983 BASELINE)*

OTSG A 8 x 1 Indications Tube I.D. Kinetic Expansion (1) Indication 1983 1986 OTSG Row Tube Transition Elevation Location # Colls Volts Phase # Colls Volts Phase A 6- 43 US+07.0(N) US+03.5 1 1.0 1 2 1.6 2 US+06.2 1 .5 1 1 .6 1 A 21- 85 US+07.0 US+11.5 2 3.0 4 2 2.5 2 A 75- 26 US+07.0 US+12.8 1 1.0 3 1 1.0 2 A 75- 32 US+07.4 US+11.9 1 1.0 1 1 1.2 1 A 77-124 US+02.0(N) 15+45.3 2 <1.0 2 1 .8 1 US+00.0 1 <1.0 1 1 .8 1 A 98- 4 US+07.0 US+08.4 2 2.0 3 1 2.2 1 A 98- 10 US+07.0 US+11.8 1 .5 1 2 2.3 2 US+12.0 2 3.0 3 1 2.8 2 US+12.4 2 2.0 3 1 1.5 1 A 126- 3 US+07.0(N) US+11.0 1 <1.0 1 -

NDD -

A 126- 90 US+07.0(N) US+05.0 1 <1.0 3 1 .7 1 A 140- 38 US+07.1 US+11.1 1 1.0 2 1 .8 2 Notes:

(1) The kinetic expansion transition elevation it determined through the ECT examination. (N) indicates the elevation was not measured but represents the ,

nominal location.

(2) Tube was subsequently plugged.

For the purpose of this examination the kinetic expansion zone includes the portion of tube from the secondary face of the U.T.S. up to and including 6" of the expanded tube.

1426x qa

TDR 781 REVISION 1 APPENDIX I PAGE 10 of 11 INDICATIONS IN THE KINETIC EXPANSION ZONE (PREVIOUSLY DETECTED DURING 1983 BASELINE)*

OTSG B 8 x 1 Indications Tube I.D. Kinetic Expansion (1) Indication 1983 1986 OTSG Row Tube Transition Elevation Location # Colls Volts Phase # Colls Volts Phase B 2- 21 US+07.2 US+12.6 2 1.0 2 1 1.6 i B 2- 22 US+07.0 US+12.9 2 5.0 2 2 3.0 2 B 2- 25 US+07.0 US+07.2 1 2.0 2 2 1.9 2 8 3- 21 US+07.0 US+09.4 1 .5 2 1 1.0 1 B 3- 24 US+07.0 US+11.2 1 1.0 .1 - - -

US+12.2 1 3.0 3 2 4.2 2 B 3- 25 US+07.0 US+10.4 1 2.0 2 1 2.4 2 B 3- 27 US+07.1 US+09.0 2 5.0 4 2 7.8 3 US+09.8 2 5.0 3 2 5.6 2 B 4- 19 US+07.0 US+11.0 1 1.0 <1 1 .9 1 8 4- 30 US+07.0 US+12.1 1 3.0 2 1 2.1 2 8 7- 36 US+07.0 US+11.8 2 3.0 3 1 2.5 3 8 21- 13 US+07.0 US+11.6 1 1.0 1 2 1,8 1 B 49- 11 US+07.0 US+10.8 - - -

1 3.5 2 US+11.4 1 2.0 2 2 13.6 3 8 63- 14 US+07.0 US+09.7 2 1.5 2 1 1.7 2 B 75- 4 US+06.9 US+09.4 1 2.0 3 1 2.5 2 US+10.8 - - -

1 1.3 1 US+11.5 2 2.0 2 1 1.9 1 B 75- 18 US+07.1 US+10.0 2 1.5 3 1 2.1 2 8 84- 8 US+06.9 US+07.5 2 4.0 3 2 4.8 2 B 98- 4 US+07.0 US+10.9 2 3.0 2 2 3.0 2 US+12.9 2 3.0 3 2 3.1 2 1426x qa

TDR 781 REVISION 1 APPENDIX I PAGE 11 of 11 INDICATIONS IN THE KINETIC EXPANSION ZONE (PREVIOUSLY DETECTED DURING 1983 BASELINE)* (CONTINUED)

OTSG B 8 x 1 Indications Tube I.D. Kinetic Expansion (1) Indication 1983 1986 OTSG Row Tube Transition Elevation Location # Colls Volts Phase # Coils Volts Phase B 112- 5 US+07.0 US+11.2(3) 1 1.0 1 - - -

US+12.5 1 2.0 1 3 2.7 2 B 140- 3 US+06.9 US+12.3 2 3.0 2 1 4.6 2

[ Notes:

(1) The kinetic expansion transition elevation is determined through the ECT examination. (N) indicates tne elevation was not measured but represents the nominal location.

(2) Tube was subsequently plugged.

(3) The discrepancy in the elevations is attributed to limitations in the 1983 evaluation process.

• For the purpose of this examination the kinetic expansion zone includes the portion of tube from the secondary face of the U.T.S. up to and including 6" of the expanded tube.

l l

1426x qa  ;

l

l TDR 781

. REVISION 1 APPENDIX II PAGE 1 of 20 APPENDIX II REVIEW OF PREVIOUS ECT DATA TABLE OF CONTENTS PAGE NO.

OVERVIEW 2-3 EXAMINATION CATEGORY A.1 4-5 EXAMINATION CATEGORY A.2 6-7 EXAMINATION CATEGORY B.1 8 EXAMINATION CATEGORY B.2 9 EXAMINATION CATEGORY B.3 10 EXAMINATION CATEGORY B.4 11 EXAMINATION CATEGORY C.1 12-13 EXAMINATION CATEGORY C.2 14-18 EXAMINATION CATEGORY C.3 19 EXAMINATION CATEGORY C.4 20 4

1477x

l I

l TDR 781 REVISION 1 APPENDIX II PAGE _2_ of 20 APPENDIX II OVERVIEW  ;

I This appendix contains the results of the 1986 reevaluation of the previous examination data. This includes data from the 1982 (pre-kinetic j

expansion), 1983 (post-kinetic expansion), and 1984 (Tech. Spec. required )

examinations. These reviews included both an objective comparison of the evaluation results and a subjective evaluation by the certified data analyst.

The following terminology is used in the attached tables Tube I.D: Self Explanatory Evaluatic,n Type: Indicates source of data; 1986 - Official Evaluation 1982R/1984R - 1986 Re-evaluation of previous data 1982R/1984E - Original evaluation results.

Indication Elevation : Axial location of the indication as described in Section III of this report.

7. T.W.: The percent through wall penetration of the indication (s). The slash (/) indicates a range of values for multiple indications.

NDD - No Detectable Indications 1477x qa

TDR 781

, REVISION 1  ;

APPENDIX II PAGE 3 of 20 PD - Possible Defect which cannot be interpretated.

Volts: The amplitude of the ECT signals. The slash (/)

indicates a range of voltages.

Colls: The number of adjacent 8xl coils which respond to defect.

Change: The objective opinion of the data analyst in determining if the tubes condition has changed between examinations.

1477x qa

TDR 781 REVISION 1 APPENDIX II PAGE 4 of 20 Review of Previous ECT Data Examination Category A.I.

ISI Tubes (TR-008 Table A-1, Category 1A)

Evaluation Indication 540 H.G.S.D 8xl Absolute Change Tube I.D. Type Elevation % T.H. Origin Volts # Colls Volts Past-86 Remarks Tubes Plugged for Indications >50% T.W.

B-94-3 1986 US-0.7/ 20/ ID .9/ 1/ 1.1/ No Indications were undercalled US+6.8 50 2.4 2 1.9 during 1984 evaluations.

1984R US-0.7/ 20/ ID 1.0/ N/A - Indications represent an area US+6.6 56 3.3 of multiple indications.

1984E US-0.7/ <20/ ID 2.0/ 1/ .3/

US+6.1 21 4.0 2 1.2 B-103-5 1986 US+5.8 56 ID 2.9 2 2.0 No Indications were undercalled during 1984 evaluations.

1984R US+5.7 46 ID 4.2 N/A -

1984E US+5.7 34 ID 4.4 1 1.6 Tubes Plugged Preventatively A-104-123 1986 US+0.0 DTS - - 2 4.4 Yes Note: Tube has multiple I.D.

Indications in area. % T.W.

1984R US+0.0 PD ID 4.2 N/A -

indeterminate. Ind. appears as combined defect and dent.

1984E US-0.1 NDD - -

2 3.1 1477x qa

TDR 781 REVISION 1 APPENDIX II PAGE 5 of 20 Review of Previous ECT Data Examination Category A.l.

ISI Tubes (TR-008 Table A-1, Category 1A) Continued Evaluation Indication 540 H.G.S.D 8x1 Absolute Change Tube I.D. Type Elevation % T.W. Origin Volts # Colls Volts Past-86 Remarks B-43-10 1986 US+0.0 DTS -

2.2 1 2.5 No Note: Tube has multip'e I.D.

Indications in area. Tubs 1984R US+0.0 DTS - -

N/A - also had a previously reported 8x1 Indication 1984E US+0.0 NDD - - NDD -

(1984) at US-0.2.

B-89-5 1986 US+0.0 DTS -

4.5 1 3.6 No Note: Tube has multiple I.D.

Indications in area.

1984R US+0.0 DTS -

5.2 N/A -

1984E US+0.0 NDD - - 2 1.8 B-94-4 1986 US+0.0 DTS -

2.2 1 1.9 No Note: Tube also has a <40%,

I coil ind. at US-0.3. Ind 1984R US+0.0 DTS -

2.2 N/A - at US-0.3 reported both .540

) & 8x1 in 1984.

1984E US+0.0 NDD - -

NDD -

4 i

1477x qa

TDR 781 REVISION 1 APPENDIX II PAGE 6 of 20 Review of Previous ECT Data Examination Category A.2.

3% Random Sample Tubes (TR-008 Table A-1, Category 2)

Evaluation Indication 540 H.G.S.D 8x1 Absolute Change Tube I.D. Type Elevation 1 T.W. Origin Volts # Colls Volts Past-86 Remarks Tubes Removed from Service A-94-126 1986 US+1.7 74 ID 2.9 1 .9 No Indication located just below kinetic expansion. Phase angle may be affected by transition signal.

1984R US+1.9 53 ID 2.4 N/A -

1984E US+1.7 NDD - - N/A -

! Tubes to be Treated as Degraded Tubes A-63-129 1986 US+2.6/ 33/ ID 1.1/ 1/ .1/ No Indications were present in US+4.7 46 1.5 2 .3 1984.

1984R US+2.6/ 36/ ID .8/ N/A -

US+4.7 46 1.1 1984E US+2.6 NDD - -

N/A -

US+4.7

! B-30-68 1986 14+12.8 46 ID .9 1 .4 No Tube also had other indications which were not 1982R 14+12.9 46 ID 1.0 N/A - confirmed by 8x1. (1984 &

1986).

1982E NDD - -

N/A -

1477x ga

TDR 781 REVISION 1

- APPENDIX II PAGE 7 of 20 Review of Previous ECT Data Examination Category A.2.

3% Random Sample Tubes (TR-008 Table A-1, Category 2) Continued Evaluation Indication 540 H.G.S.D 8x1 Absolute Change Tube I.D. Type Elevation 1 T.H. Origin Volts # Coils Volts Past-86 Remarks A-68-80 1986 11+12.0 23 ID 1.0 1 1.1 No 1982R 11+12.0 26 ID 1.4 N/A -

1982E NDD - -

N/A -

B-104-77 1986 US+4.3 26 ID 1.7 1 .4 Yes Signal Amplitude and S/N i ratio increased from 1982 to 1982R US+4.3 30 ID 1.2 N/A - 1986, 1982E NDD - -

N/A -

f 1477x qa

TDR 781 REVISION 1 APPENDIX II

-PAGE 8 of . 20

Review of Previous ECT Data Examination Category B.l.

Sample, Tubes Adjacent to Plugged Tubes (Wear Tubes, TR-008 Table A-1 Categories Ib,c,g)

Evaluation Indication 540 H.G.S.D 8xl Absolute Change Tube I.D. Type Elevation % T.W. Origin Volts # Colls Volts Past-86 Remarks B-146-37 1986 12+7.0 26 ID .9 1 .5 No 1984R 12+7.0 23 ID 1.2 N/A -

1984E NDD - -

N/A -

4 i

1 I

1477x qa

TDR 781 REVISION 1 APPENDIX II PAGE 9 of 20 Review of Previous ECT Data Eyamination Category B.2.

Sample, Tubes in High Plug Density Area (TR-008 Table A-1 Categories le)

Evaluation Indication 540 H.G.S.D 8x1 Absolute Change Tube I.D. Type Elevation 1 T.W. -Origin Volts # Colls Volts Past-86 Remarks No Indications identified in this category therefore no data review was performed.

1477x qa

TDR 781 REVISION 1

, APPENDIX II PAGE 10 of 20 Review of Previous ECT Data

• Examination Category B.3.

Kinetic Expansion Area Indications (TR-008 Table A-1 Categories id)

Evaluation Indication 540 H.G.S.D 8xl Absolute Change Tube I.D. Type Elevation % T.W. Origin Volts # Colls Volts Past-86 Remarks 1986 results consistant with 1983 results therefore no data review performed.

.I 1

4 e il i

i 1477x qa i

TDR 781 REVISION 1 APPENDIX II PAGE 11 of 20 Review of Previous ECT Data Examination Category B.4.

3% Sample, Upper Tube Sheet Only (TR-008 Table A-1 Categories If)

Evaluation Indication 540 H.G.S.D 8x1 Absolute Change Tube I.D. Type Elevation % T.H. Origin Volts # Colls Volts Past-86 Remarks A-49-99 1986 US+6.9 N/A - -

1 1.0 Indication located .1" below kinetic expansion. 1 T.H.

1983R US+6.9 N/A - -

NDD -

indeterminate.

1983E N/A - -

NDD -

B-98-84 1986 US+7.0 N/A - - 2 1.3 Indication located at transition to kinetic 1983R US+7.0 N/A - -

NDD - expansion. No. 540" H.G.S.D exam. attempted in 1986 due to location.

1983E N/A - - NDD -

i 1477x qa

TDR 781 REVISION 1 APPENDIX II PAGE 12 of 20 Review of Previous ECT Data Examination Category C.I.

. Tubes with Indications Not Confirmed by 8x1 Absolute Exam In 1984 Evaluation Indication 540 H.G.S.D 8xl Absolute Change Tube I.D. Type Elevation % T.W. Origin Volts # Colls Volts Past-86 Remarks Tubes Plugged for Indications >50% T.W.

A-2-8 1986 15+19.9 73 ID 1.3 1 .5 No Indication was present during 1984 8xl exam. but was missed.

1984R 15+19.9 70 ID 1.5 2 1.1 1984E 15+19.9 <40 ID Mult. NDD -

A-54-2 1986 14+3.3 60 ID 1.3 1 1.0 No Indication was present in 1984 but recorded at wrong 1984R 14+3.1 48 ID 1.2 2 .4 elevation on 540 H.G.S.D. 8x1 therefore evaluated in wrong 1984E 13+3.1 48 ID 1.2 NDD -

area.

1986 14+5.8 63 ID .8 1 .4 No Indication was present in 1984 but recorded at wrong ,

1984R 14+5.8 48 ID .7 1 .2 elevation on 540 H.G.S.D. 8x1

- therefore evaluated in wrong 1984E 13+5.4 48 ID .7 NDD - area.

, A-104-27 1986 US+5.7 70 ID 1.3 1 1.2 No Indication not detectable on review of 1984 8x1.

j 1984R US+5.7 73 ID 1.2 NDD -

1984E US+5.7 80 ID 1.1 NDD -

1477x qa

TDR 781 REVISION 1 APPENDIX II PAGE 13 of 20 Review of Previous ECT Data Examination Category C.I.

Tubes with Indications Not Confirmed by 8x1 Absolute Exam In 1984 (Centinued)

Evaluation Indication 540 H.G.S.D 8x1 Absolute Change Tube I.D. Type Elevation 1 T.W. Origin Volts # Colls Volts Past-86 Remarks Tube Plugged for Indications >20% T.W. (Lane Wedge)

A-77-6 1986 15+12.9 36 ID .9 1 .6 No No change was identified in

.540 H.G.S.D. 1984 8x1 was 1984R 15+12.8 33 ID .9 N/A - not reviewed.

1984E 15+12.8 33 ID .9 NDD -

Tube Preventative 1y Plugged A-14-75' 1986 03+18.9 S/N ID .7 2 1.1 No Indication located in area of high back ground noise.

1984R 03+18.9 S/N ID N/A - Percent through wall cannot be determined.

1984E 03+18.9 NDD - - N/A -

1477x qa

TDR 781 REVISION 1 APPENDIX II PAGE 14 of 20 Review of Previous ECT Data Examination Category C.2.

Lane / Wedge Area Tubes Evaluation Indication 540 H.G.S.D 8x1 Absolute Cnage Tube I.D. Type Elevation % T.W. Origin Volts # Colls Volts Past-86 Remarks Tubes Removed From Service A-74-31 1986 US+1.1/ 30/ ID 1.0/ 1/ .4/ No 1986 data has better S/N US+5.5 97 1 .5 ratio than 1984 making indications more detectable.

1984R US+3.1/ 46/ ID .9/ N/A -

US+5.4 96 1.0 1984E NDD - -

N/A -

B-73-1 1986 15+3.9 33 ID 1.2 1 1.0 No Indication was present lit noise of about 1.0 volt in 1984R 15+3.1 26 ID 1.7 N/A -

1984.

1984E NDD - -

N/A -

B-77-18 1986 15+43.9 26/ ID 2.1/ 1/ 2.0/ No Although the amplitude of the 15+44.0 66 3.4 2 4.5 indications increased from 1982. 1986 the basic shape 1982R 15+44.2/ <20/ ID 1.0/ N/A - of the ECT signals did not 15+44.6 43 1.6 change.

1982E NDD - - N/A -

a 4

1477x qa 1

TDR 781' REVISION 1 APPEl4 DIX II PAGE 15 of 20 Review of Previous ECT Data Examination Category C.2. Continued Lane / Wedge Area Tubes Evaluation Indication 540 H.G.S.D 8x1 Absolute Change Tube I.D. Type Elevation % T.W. Origin Volts # Colls Volts Past-86 Remarks B-77-57 1986 US+5.2 63 ID 1.7 2 2.0 Yes Note: Tube also has other ID indications in UTS. S/N 1982R US+5.3 56 ID .6 N/A - ratto definitly increased from 1982 to 1986.

1982E NDD - - N/A -

B-78-18 1986 US+2.7 99 ID 1.6 3 3.3 Yes S/N ratio and amplitude increased from 1982 to 1986.

1982R US+2.7 S/N ID .5 N/A - 1982 indication would not be evaluated for % T.W. during 1982E NDD - - N/A - production exam.

B-78-20 1986 US+4.8 66 ID 2.2 2 2.1 Yes S/N ratio and amplitude increased from 1982 to 1986.

1982R US+4.7 PD ID .5 N/A - 1982 data shows a possible defect which is not '

1982E NDD - - N/A - interpretable.

1477x qa

TDR 781 REVISION 1 APPENDIX II PAGE 16 of 20 Review of Previous ECT Data Examination Category C.2. Continued Lane / Wedge Area Tubes Evaluation Indication 540 H.G.S.D 8x1 Absolute Change Tube I.D. Type Elevation 1 T.W. Origin Volts # Coils Volts Past-86 Remarks B-78-57 1986 US+6.2 56 ID 2.4 2 3.9 Yes Review of 1982 data shows no interpretable indications.

1982R US+6.2 NDD - -

N/A -

Note: Tube has additional ID indications in 1986.

1982E NDD - -

N/A -

B-79-57 1986 US+1.7 93 ID 2.4 2 1.3 Yes S/N ratto and amplitude increased from 1982 to 1986.

1982R US+1.8 <20 ID 1.2 N/A -

1982E NDD - - N/A -

B-77-14 1986 US+0.0 97 -

3.6 3 3.1 Yes Origin of 1986 indication is indeterminate. Tube has 1982R US+0.0 PD OD 2.3 N/A -

other ID indications in the UTS.

1982E NDD - -

N/A -

1477x qa

TDR 781 REVISION 1 APPENDIX II PAGE 17 of 20 Review of Previous ECT Data Examination Category C.2. Continued Lane / Wedge Area Tubes Evaluation Indication 540 H.G.S.D 8x1 Absolute Change Tube I.D. Type Elevation % T.W. Origin Volts # Colls Volts Past-86 Remarks B-79-8 1986 US+0.0 DTS -

1.6 1 .8 Yes Origin of 1986 indication is indeterminate. 1986 1984R US+0.0 PD ID 1.8 N/A - indication appears as a possible dent and defect 1984E NDD - - N/A -

combined.

Tubes to be Treated as Degraded Tubes B-74-28 1986 US+5.5 43 ID 2.8 1 .4 No 1984R US+5.6 36 ID 2.0 N/A -

! 1984E NDD - - N/A -

A-78-31 1986 US+5.7 20 ID 1.0 1 .6 No Note: Tube has other ID indications in UTS.

1984R US+5.6 26 ID .9 N/A -

1984E NDD - - N/A -

1477x qa

TDR 781 REVISION 1 APPENDIX II PAGE 18 of 20 i

Review of Previous ECT Data Examination Category C.2. Continued Lane / Wedge Area Tubes Evaluation Indication 540 H.G.S.D 8x1 Absolute ' Change Tube I.D. Type Elevation ?. T.W. Origin Volts # Colls Volts Past-86 Remarks j B-73-18 1986 US+5.6 43 ID 2.9 1 1.1 Yes S/N ratio and amplitude increased from 1982 to 1986.

1982R US+5.6 20 ID 1.3 N/A -

1982E NDD -- - N/A -

B-74-18 1986 US+6.4 36 ID 1.7 1 1.2 Yes No indication was detectable on the review of the 1982 1982R NDD - -

N/A - data.

1982E NDD - -

N/A -

l 3

l 1477x qa

4 TDR 781 REVISION 1-APPENDIX II PAGE 19 of 20 Review of Previous ECT Data Examination Category C.3.

Gap Tubes Evaluation Indication 540 H.G.S.D 8x1 Absolute Change Tube I.D. Type Elevation 1 T.W. Origin Volts # Colls Volts Past-86 Remarks No Indications identified in this Category, therefore no data review was performed.

4 k

I l

1477x qa

TDR 781 REVISION 1 APPENDIX II-

, PAGE 20 of 20 Review of Previous ECT Data Examination Category C.4.

Special Category Tubes Evaluation Indication 540 H.G.S.D 8x1 Absolute Change Tube I.D. Type Elevation 1 T.N. Origin Volts # Colls Volts Past-86 Remarks No Indications identified in this Category, therefore no data review was performed.

l

}

l l

I i

1477x qa

TDR 781 REV.0 APPENDIX III PAGE 1 of 41 APPENDIX III ISI TUBE LIST TABLE OF CONTENTS PAGE NO.

OVERVIEW AND NOTES 2-3 OTSG A ISI LIST . 4 - 36 OTSG B ISI LIST 37 - 41 1463x/QA

TDR 781 REV.0 APPENDIX III

! PAGE 2 of 41 OTSG A & B ISI TUBE LIST FOR 1986 ECT OUTAGE SM OVERVIEW This list contains the tubes identified as ISI tubes for the 1986 ECT outage and includes those tubes required to be examined per category 1(a) of Topical Report 008, Rev. 3, Table A-1. This includes both tubes with indications 20-39% throughwall which are classified as " Degraded Tubes" per Tech. Spec. 4.19 and tubes which have indications less than 20% throughwall but are being monitored at GPUN's discretion.

The list of tubes is based on the 1984 Examination Results in the THI ECT data bases dated 04/29/85 for the .540" H.G.S.D. and 02/05/85 for the 8 x 1 Absolute. Included in the list are all tubes remaining inservice with .540" indications from 0-39% which were confirmed by 8 x 1 absolute during the 1984 examinations. The 1986 Examination results are extracted from the TMI data bases (Conam System) dated 04/17/86 for both 8x1 Abslute and .540" H.G.S.D.

1463x/QA

TDR 781 REV.0 APPENDIX III PAGE 3 of 41

l. OTSG A & B ISI TUBE LIST FOR 1986 ECT OUTAGE SM NOTES GENERAL

= Location of indications is based on data from .540" H.G.S.D.

. examinations.

• For tubes with more than one examination, the data recorded for elevation, percent, and voltage reflects the "mean" value.

• The correlation of the 8 x 1 to .540" H.G.S.D. data is based on a "best fit" correlation. Inaccuracies in the 8 x 1 probe travel speed prohibit making direct correlations.

• Indications where the data are shown as XXX/XXX reflect an area of multiple ECT signals and represent the lowest and highest elevations,' percents, and voltages for the area.

.

• NDD Indicates area was specifically evaluated by 8 x 1, and

determined to contain No Detectable Discontinuities, i

e NR indicates area was not specifical!y evaluated by 8 x 1, and therefore small indications may have been present but were Not i Recorded individually.

SPECIFIC NOTE 1 - Additional reviews performed by Conam Data Analysts identify the indications as possibly "non-relevant" based on signal formation and rise time. Present screening criteria do not permit deleting these indications from the ISI population, i NOTE 2 - Values shown in the 1984 % (540) column represent a 1986 re-evaluation of the 1984 data.

i 1

4 d

1463x/QA

4 0TSG ISI LIST.

OTSG A ISI LIST TDR 781

- REV.' 1 .

i APPE9WIX III PAGE 4 of 41 1984 1986 - 5M

% (540) 1 (540) . SM Change Raw Tube Location firiain Prh Cails Phase 18x11 Valts Calls Phase f8x11 Vol ts 1984 Real No. Reel No. in 1 8 - eks Sart 1- 4 12+06.6/ ID .540 <20/24 .6/2.3 <20/<20 0.8/1.6- 666 18 13+26.4 8x1 1 2 .3 1/1 1/1 0.3/0.4 762 516 4 1- 4 US-10.4 ID .540 (20 2.5 <20 2.2 666 -18

+

8x1 1 1 .5 1 1 0.7 762 516 i '1- 6 12+02.0 ID .540 <20 2.0 <20 1.9 666 1 8xl 1 1 .5 1 1 0.6 758 501 1- 14 13-11.1 ID .540 (20 1.9 (20 1.6 666 2 8x1 1 1 .3 .1 1 0.3 758 501

, 3- 15 US+01.5 ID .540 <20 2.3 23 1.8 666 1 8x1 1 1 .4 2 1 0.4 7SB 501 2- 15 US-09.0 ID .540 <20 .8 (20 .8 666 1 8x1 NDD 1 1 0.2 758 501 2- 15 US-07.1 ID .540 <20 .8 20 .8 666 1 8x1 NDO NDD 758 501 i

2- 22 15-12.8 ID .540 <20 1.3 <20 1.3 616, 666, 699, 760 18 1 8x1 1 1 .4 1 1 0.3 758 508 8x1 Multiple 2 .22 15-05.3 ID .540 21 .8 S/N 0.7 616, 666, 699, 760 18 8x1 1 1 .3 1 1 0.4 758 508 8xl Multiple 2- 22 15-01.5 ID .540 23 .7 S/N 0.6 616, 666, 699, 760 18

' 8x1 NR 1 1 0.2 758 508

! 2- 25 13+02.5/ ID .540 (20/31 .5/1.5 S/N 0.6/1.3 666. 699, 760 2 4 13+13.0 8x1 1/1 <1/<1 .2/.5 1/1 1/1 0.2/0.7 673 501

)

3- 17 US-13.7 ID .540 24 1.2 23 1.1 666 1 -1 l

8x1 1 1 .3 1 1 0.3 750 502 3- 25 15+41.4 ID .540 31 1.2 (20 1.0 666. 699, 760 18 8x1 1 2 .2 1 1 0.4 673 508 3- 25 15+42.8 ID .540 27 1.8 36 1.6- 666, 699, 760 18 +9 i Sul 1. 2 .3 1 1 0.5 673 508 4- 6 15+42 ID .540 31 .7 30 .8 667 1 -1

^

8x1 1 <1 .2 1 1 0.3 750 501 4- 28 15+21.3 ID .540 28 1.5 23 1.2 666 18 -5 8x1 1 1 .2 2 1 0.5 756 508 a

1464x/qa i

J

0T56 ISI LIST OTSG A ISI LIST TDR 781 REV. 1 APPDWIX III PAGE 5 of 41 1984 1986 - SM

% (540)  % (540) .

SM Change Raw Tube Location firiain Probe Calls Phase (Bul) Volts Calls Phase (Bull Vol ts 1984 Reel No. Reel No. in % Remarks Sart 4- 28 15+27.3 ID .540 28 1.5 (20 1.4 666 18 8x1 NDD 1 l' O.7 756 508 4- 28 15+30.2 ID .540 38 1.8 26 1.7 666 18 -12 8x1 1 1 .5 1 1 0.5 756 508 4- 29 15+21.8 ID .540 <20 1.0 (20 0.8 666 3 But 1 (1 .1 NDD 756 502/512 4- 29 15.21.2 ID .540 <20 1.2 <20 1.4 666 3 8x1 1 1 .3 1 1 0.6 756 512 4- 29 15+27.5 ID .540 31 1.9 <20 1.7 666 3 8x1 1 1 .3 1 1 0.5 756 502 4- 29 15+36 ID .540 31 .8 36 0.7 666 3 +5 8x1 1 1 .3 1 1 0.2 756 502 4- 29 15+37.5 ID .540 <20 .7 <20 0.6 666 3 8x1 1 (1 .1 NDD 756 502/512 4- 34 15+24 ID .540 28 .8 30 0.9 666 3 +2 8xl 1 1 .2 NDD 756 502 5- 3 14+26 ID .540 (20 1.2 <20 1. 667 1 8xl 1 <1 .2 NDD 750 501 5- 3 14+33 ID .540 <20 .7 (20 .6 667 1 8x1 1 1 .2 1 1 0.3 750 501 5- 3 15+44.4 ID .540 -34 2.3 33 1.4 667 1 -1 8x1 1 2 .4 1 1 0.6 750 501 5- 3 15+43.8 ID .540 24 1.6 33 2.4 667 1 +9 8x1 1 1 .4 1 1 0.5 750 501 5- 5 15+34 ID .540 25 1.3 26 1.2 617, 685, 699. 760 1 +1 8x1 1 2 .3 1 1 0.4 673 501 5- 5 12+25 OD .540 39 .5 39 .6 617, 685, 699, 760 1 8xl NDD NDD 673 501 5- 45 14+33 ID .540 <20 1.2 <20 1.0 3 8x1 1 (1 .2 NDD 666, 850, 758, 841 501 Reel 758, 841 NDD 6- 43 US+03.6 ID .540 29 2.2 36 2.2 616, 699, 760 3 +7 8x1 1 3 .8 2 2 1.6 673 512 1464x/qa

OTSG ISI LIST OTSG A ISI LIST TDR 781 REV. 1 APPENDIX III PAGE 6 ef 41 1984 1986 - SM

% (540) 1 (540) SM Change

_ Row Tube Location Oriain Probe Coils Phase 18x11 Volts Calls Phase (Bull Volts 1984 Reel No. Reel No. in % Remarks Sort 6- 43 US+06.1 ID .540 <20 2.0 <20 2.0 616, 699, 760 3

. 8xl 1 2 .4 1 1 0.7 673 512 6- 47 US-27.3/ ID .540 (20 <1/1.8 (20/23 1.1/1.5 666 3 US-12.7 8x1 1 1 .3 1/1 1/1 .2/.3 758 501 6- 48 US+00.4 ID .540 31 1.8 33 1.9 666 3 +2 8x1 2 2 .5 2 1 1.4 756 501 i 6- 48 US-04.0 ID .540 <20 .6 S/N 0.5 666 3 Bul NDD NDD 756 501 8- 2 12+18.1 ID .540 28 .9 20 0.9 668 1 -8 8xl 1 <1 .5 NDD 750 501 8- 2 12+24.2 ID .540 28 2.1 26 2.0 668 1 -2 8x1 1 <1 .6 1 1 0.6 750 515 8- 2 12+15.4 ID .540 21 1.2 <20 1.1 668 1 2

8x1 NDD NDD 750 501 8- 2 12+28.3 ID .540 21 1.4 23 1.5 668 1 +2 8x1 NDO 1 1 0.5 750 515 8- 2 12+32.4 ID .540 31 1.7 26 1.6 668 1 -5 8x1 NDD 1 1 0.5 750 515 8- 45 US-16.2/ ID .540 <20/24 .8/1.9 <20/33 0.7/1.8 665 3 US-07.0 8xl 1 1 .2/.3 1/2 1/1 0.1/0.7 756 501 8- 4% US+02.3 ID .540 38 1.2 36 1.0 665 3 -2

- 8x1 1 2 .2 NDD 703, 756 501 Reel 756 NDD 8- 45 US+05.2 ID .540 38 1.4 33 1.5 665 3 -5 8x1 1 1 .4 1 1 0.3 756 501 8- 55 15+18.5 ID .540 24 2.4 36 2.4 665 3 +12 8x1 1 1 .7 1 1 0.4 756 501 8- 55 15+27.1 ID .540 <20 1.1 (20 1.0 665 3 8m1 NDD NDD 756 501 8- 55 15+35.2 ID .540 28 2.7 <20 2.6 665 3 8xl 1 1 .5 1 1 0.7 756 501 9- 3 14+02.2 ID .540 34 .8 (20 .7 668 1 8x1 1 I .4 NDD 750 501 1464x/qa

OTSG ISI LIST OTSG A ISI LIST TDR 781 REV. 1 APPENDIX III PAGE 7 of 41 1984 1986 - SM

% (540)  % (540) SM Change Row Tube tocation Oriain Probe Coils Phase (8x1) Volts Coils Phase (8x1) Volts 1984 Reel No. Reel No. in % Remarks Sort 9- 3 14+04.8 ID .540 <20 .8 <20 .8 668 1 8x1 NDO NDD 750 501 9- 3 14+08.1 ID .540 (20 1.0 (20 1.0 668 1 8x1 1 <1 .3 NDD 750 501 9- 6 15+21.3 ID .540 38 .5 36 0.6 668 1 -2 8x1 1 1 .3 NDO 750 502 10 - 4 15+27.8 ID .540 <20 1.8 <20 1.6 669 1 8xl 1 i .3 1 1 0.4 762 501 11 - 4 15+11.2 ID .540 <20 1.0 <20 0.9 669 1 8x1 NDO 1 1 0.3 750 501 11 - 4 15+14.7 ID .540 <20 .9 23 0.9 669 1 8x1 NDO 1 1 0.5 750 501 11 - 4 15+20.7 ID .540 21 1.2 20 1.1 669 1 -l 8x1 1 1 .4 1 1 0.3 750 501 13 - 1 11+33.5 ID .540 34 1.1 30 1.0 669 1 -4 8x1 Multiple 8xl 1 1 .2m 1 1 0.7 750 502 Indications 13 - 1 13+13.6 ID .540 <20 .4 669 1 8x1 NR NDO 750 502 13 - 1 13+14.2 ID .540 (20 .6 <20 0.7 669 1 8x1 NR NDD 750 502 13 - 1 13+21 ID .540 (20 .7 (20 0.7 669 1 8x1 NR NDO 750 502 13 - 1 13+22.2 ID .540 31 2.0 30 1.9 669 1 -1 8x1 1 <1 .6m 1 1 1.3 750 502 13 - 1 13+23.1 ID .540. 24 1.4 20 1.3 669 1 -4 8x1 1 1 .5m 1 3 0.3 750 502 13 - 1 13+26.9 ID .540 <20 1.3 <20 1.3 669 1 8x1 1 <1 .3m 1 1 0.5 750 502 13 - 1 13+30.4 ID .540 28 .8 <20 0.8 669 1 8x1 NR 1 0.6 750 502 14 - 8 15+29.5 ID .540 <20 1.1 (20 1.1 670 i But 1 I .3 1 1 0.8 758 501 1464x/qa

OTSG ISI LIST-OTSG A ISI LIST TDR 781 REV. 1 APPDGIX III PAGE 8 of 41 1984 1986 - SM

% (540) 1 (540) 5M Change -

Raw Tube Location firinin Probe Coils Phase (Bul) Vnits Calls Phase (Suli Volts 1984 Reel No. Reel No. in % D - rks $nrt 15 - 77 12+18.1/ ID .540 21/28 1.1/1.2 <20/30 .7/1.1 661 3 12+30.0 8x1 1 1 .3 1 0.3 103 501 16 - 2 15+42 ID .540 34 1.0 <20 .9 670 1 Sul 1 <1 .3 1 1 0.4 750 501 18 - 1 04+05.0 ID .540 31 1.1 30 1.2 671 3 -1 Sul NDD 1 1 0.5 750 500 18 - 1 04+11.7 ID .540 <20 1.1 <20 1.0 671 3 8x1 1 (1 .4 1 1 0.5 750 500 18 - 3 15+24 ID .540 21 .9 30 1.0 671 3 +9 8xl NDO 1 1 0.4 750 501 18 - 3 15+18 ID .540 <20 .6 (20 .6 671 3 8x1 1 <1 .5 NDO 750 501 18 - 84 05-13.0/ ID .540 34 1.3 <20/33 0.8/1.4 661 3 540 Nultiple US-04.5 8x1 1 1 .2/.3 1/1 1/1 0.3/.4 7% 501 8x1 Multiple 19 - 1 06-05.0 ID .540 38 .7 26 0.8 671 1 -12 amt 1 1 .2 1 2 0.5 750 502 19 - 43 US-00.6 ID .540 <20 1.1 (20 0.6 714. 695 3 8x1 1 2 .4 NDD 750 500 19 - 43 US-21.5 ID .540 <20 .7 <20 0.8 714 3 8x1 NDD NDD 750 500 20 - 1 06-15.3 ID .540 <20 1.1 <20 1.0 672 1 8xl 1 I .3 1 1 0.3 750 500 20 - 1 06-04.9 ID .540 24 .9 33 0.8 672 1 +9 8x1 1 1 .5 NDD 750 500 20 - 56 US-20.3 ID .540 <20 .9 <20 0.8 694 3 But I <1 .3 1 1 0.3 750 502 20 - 56 US-12.8 ID .540 3S .8 33 1.1 694 3 -5 8x1 1 1 .4 1 1 0.3 750 502 20 - 85 10+14.4/ ID .540 <20 1.0/1.4 (20/36 0.7/1.3 660 3 10+21.0 8x1 1/1 1/1 4/.4 1 0.4/0.5 756 515 20 - 85 14+32.3 ID .540 <20 1.1 26 0.8 660 3 See Note 2 8x1 1 1 0.3 515 1464x/qa

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0T56 ISI LIST DTSG A ISI LIST TOR 781 REV. 1 APPDSIX III PAE 10 of 41 1984 1986 - SM

% (540)  % (540) SM Change Raw Tube tocation firinin Probe Cails Phase (Bull Volts Calls Phne famil Vol ts 1984 Reel No. Real No. in % D - rks Sort 27 - 78 15+33.0 ID .540 31 1.5 33 1.2 694 3 +2 8ml 1 3 .2 NDD 750 501 27 - % US-08.9 ID .540 24 1.0 23 1.1 658 5 -1 8x1 1 1 .2 1 1 0.6 756 515 27 - % US-08.0 ID .540 31 .6 IDC 0.5 658 5 8x1 1 1 .2 NDO 756 515 28 - 78 15+14.3 ID .540 <20 2.9 <20 2.5 694 3 8ml 1 1 .6 1 3 0.4 842 502 28 - 78 15+28.1 ID .540 (20 1.3 S/N 0.9 694 3 Bul 1 1 .4 1 1 0.6 842 502 29 - 58 US-17.7 ID .540 26 .8 <20 0.9 791 3 81 1 1 .2 NDO 841 502 29 - 58 US-16.4 ID .540 30 .9 (20 0.9 791 3 Bul 1 1 .2 NDO 841 502 29 - 58 US-12.4 ID .540 33 .9 20 1.0 791 3 -13 8ml 1 1 .3 1 1 0.4 841 502 31 - 1 08+06.3 ID .540 34 1.0 20 1.0 678 1 -14 8ml 1 <1 .2 1 1 0.7 750 514 32 - 98 US-06.0 ID .540 38 .6 IDC 0.4 658 1 8ul 1 1 .1 1 1 0.8 756 501 33 - 83 US-01.1 ID .540 33 .9 <20 1.1 790, 720 3 8x1 1 1 .2 1 1 0.3 762 502 33 - 83 US+01.8 ID .540 <20 2.6 23 2.1 790, 720 3 8m1 1 1 .2 1 2 0.3 762 502 33 - 102 15+05.6 ID .540 31 1.0 S/N 0.8 658 18 8m1 1 1 .4 NDD 756 508 34 - 3 US+02.0 ID .540 31 1.6 36 1.1 679 1 +5 Sul 1 <1 .3 1 1 0.4 750 500 34 - 3 US+03.9 ID .540 28 .8 S/N 0.8 679 1 8xl 1 1 .1 NDD 750 500 34 - 3 US+04.7 ID .540 <20 1.0 23 0.8 679 1 8ul NDO NDO 750 500 1464x/qa

OTSG ISI LIST DTSE A ISI LIST TDR 701 REV. 1 APPEISIR III' PAGE 11'ef di 1984 1986 - SM

% (540) . .

1 (540) 5M Change Sam Tashe tacatian ' liriniii Prahe Cails Pkm= (Smil Val ts tails Phau fant). Valts 1984 Reel Ita. Rael Ita. in 1 "-- eks ' Sart ' ' --

36 - 106 US-11.8 ID .540 24 1.6 - 20 1.3 616, 657 5 -4 Sul 1 .1 .6 1 1 0.3 673 501 37 - 109 US-47.2 ID .540 38 1.0 33 0.9 657- 5 -5 Sul 1 1 '

.6 1 1 1.0 756 501 37 - 109 US-08.6 10 .540 24 .6 ' 5/N 0.5 657 5 8ul NDO ISO 756 501 37 - 110 US-17.8 ID .540 38 .6 5/N 0.7 657 5

. 8u l 1 1 .2 .1 1 0.3 750 501 37 - 110 US-13.3 ID .540 38 .8 (20 1.0 657 5 8ul 1 1 .3 NDO 750 501 38 - 29 12-12.6 ID .540 40 .8 5/N 0.7 797 1 Sul NDO ISO 750 502 38 - 29 12+03.7 ID .540 30 1.4 26 1.5 797 1 -4 '

Sul 1 1 .3 NDD 842 502 19 - 29 14+09.9 ID .540 46 .7 5/N 0.6 797 1 8ul NDO 1 1 0.2 842 502 38 - 29 14+18.1 ID .540 70 .6 66 0.7 797 1 8x1 . NDO NDO 842 502 38 - D 03+18.8 10 .540 (20 2.9 <20 2.6 610, 798 . 1 Sul 1 1 .6 180 758 500 38 - 109 U5-05.6 ID .540 24 .6 5/N 0.6 657 5 Sul 1 1 .3 18 0 750 501 39 - 101 U5-11.5 ID .540 34 1.0 23 1.0 657 5 -11 Sul 1 <1 .3 ISD 750, 751 501 39 - 110 US-06.4 ID .540 35 1.2 $/N 0.5 616, 657 5 Bul 1 1 .5 NDO 673 501 40 - 2 US-09.4 ID .540 <20 1.3 <20 1.3 680 1 Sul 1 1 .3m 1 1 0.6 758 500 de - 2 US-05.9 10 .540 <20 .6 5/N 0.6 680 1

- Sul 1 1 .2m 1 1 0.5 758 500 40 - 2 US+02.2 ID .540 <20 1.3 <20 0.9 680 i Sul 1 1 .3m 1 1 0.3. 758 500 1464x/qa

OTSG ISI LIST OTSG A ISI LIST TOR 781 REV. 1 APPDElIX III PAGE 12 cf di 1984 1986 - SM

% (540)  % (540) SM Change Raw Tube tocation Oriain Probe Cails Ph <* 18 11 Valts Calls Pbem famil Valts 1984 Reel No. Reel No. in 1 a = rks $ art 40 - 2 US+03.6 ID .540 <20 1.5 26 1.1 680 1 Bul 1 1 .2m 1 1 0.5 758 500 40 - 2 US+04.2 ID .540 (20 .9 <20 0.8 680 1 Bul 1 1 .le NDO 758 500 4

40 - 2 US+05.3 ID .540 <20 1.1 23 0.8 680 1 Bal W NDO 758 500 40 - 2 US+06.0 ID .540 <20 2.1 <20 2.2 680 1 8=1 1 1 .7m 1 I 0.5 758 500 41 - 16 14+03.0 00 .540 37 .7 37 0.4 697 1 8ml 1 4 .3 NDO 758 500

• 41 - 16 12+13.7 OD .540 37 .4 <20 0.3 697 I 8x1 NDO NDO 758 500 41 - 83 15+07.4 ID .540 <20 1.4 (20 2.0 787 3 8=1 1 <1 .4 1 1 0.4 342 502 41 - 94 US-30.1 ID .540 30 .9 S/N 0.9 787 5 Bal 1 <1 .4 1 1 1.3 842 501 42 - 53 US-03.9 ID .540 <20 1.9 (20 1.9 800 3 Bal 1 <1 .3 1 1 0.2 841 500 42 - 53 US-00.8 ID .540 <20 1.8 (20 2.1 800 3 Sul i 1 .3 1 1 0.5 841 500 42 - 73 US-05.2 ID .540 23 .8 S/N 0.8 787 3 8ml 1 1 .3 NDO 842 501 42 - 81 US-20.9 ID .540 <20 1.5 <20 1.8 787 3 8al 1 <1 .2 NDO 842 501 42 - 114 US-34.1 ID .540 24 .4 IDC 0.4 656 5 Bul 1 1 .2 NDD 755 501 I 42 - 114 US-32.9 ID .540 24 .6 IDC 0.5 656 5 8ml NDO NDD 755 501 42 - 114 US-17.7 ID .540 <20 .8 S/N 0.9 656 5 8m1 NDD NDO 755 50I i

42 - 114 US-14.2 ID .540 24 .6 S/N 0.7 f,56 5 8ml 1 I .2 MDD 755 501

! . 1464m/qa

CTSG ISI LIST OTSG A ISI LIST TDA 781 REV. I APPDWIK III PAGE 13 cf 41 1984 1986 - SM

% (540) 1 (540) 5N Chance Raw Tune taration firiniii P.-i Cails N * (8m11 Valts Coils PWs 88 mil Val ts 1984 Reel No. Reel No. in 1 8 - rks Sart 42 - 114 US-11.6 ID .54G 24 .9 5/N 0.8 656 5 Sal 1 1 .3 NDO 755 501 42 - 114 US-02.8 ID .540 41 .5 5/N 0.6 656 5 8mi NDO NDO 755 501 43 - 1 05-11.6 ID .540 31 .7 33 0.7 681 1 +2 8ml 1 2 .3 1 1 0.6 757 500 43 - 82 08-02.0 ID .540 23 1.0 <20 1.0 786 3 8ml 1 <1 .2 1 1 0.5 846 515 46 - 23 12-17.9 ID .540 <20 2.2 <20 2.6 801 18 Sal 1 <1 .2 NDO 846 508 46 - 88 US-16.1 ID .540 20 1.6 <20 1.1 785 5 Sul 1 <1 .3 1 1 3.3 842 501 46 - 106 US-12.9 ID .540 24 .9 <20 1.0 655 5 Bal NR NDO 755 501 46 - 106 US-12.1 ID .540 24 1.4 <20 1.6 655 5 8al 1 <1 .4 1 1 0.5 755 501 47 - 84 US-06.5 ID .5 50 23 1.1 <20 0.9 784. 837 3 Bal 1 1 .3 NDD 842 501 48 - 83 US+05.6 ID .540 <20 2.6 (20 2.0 784 3 8m1 1 1 .6 1 1 0.7 842 501 48 - 118 15-11.5 ID .540 24 .9 (20 0.9 655 5 8a1 NDD NDO 751 501 48 - 118 15-05.2 ID .540 38 .6 5/N 0.8 655 5 8al 1 I .3 1 1 0.3 751 501 49 - 23 US-03.6 ID .540 30 .8 5/N O.9 803 18 8ml 1 1 .2 NDO 841 508 49 - 73 US+04.9 ID .540 33 2.1 23 1.7 768 3 -10 8=1 1 2 .9 1 1 0.7 842 501 49 - 82 US-04.7 ID .540 26 .5 <20 0.8 768 3 Bal NDO N00 842 501/512 49 - 82 U5-03.5 ID .540 26 .7 5/N 0.7 768 3 841 1 <1 .2 NDO 842 501/512 1464x/qa

OTSG ISI LIST OT5G A fil LIST TOR 781 REV. 1 APPDSIM III PAGE 14 cf 41 1 (540) 1 (540) SN Chan9e

• han Tube Lacatian Criai ".- i Calls N == famil Val ts Calls N == famil Val ta 1984 Emel No. Rael No. in 1 -km Eart 49 - 82 US-06.2 ID .540 26 .8 5/N O.7 768 3 Sul NDO NDO 6 ".2 501/512 49 - 85 U5-12.5 ID .540 <20 1.3 (20 1.0 768 3 Sul 1 <1 .5 NDO 846 501/512 49 - 85 US-11.5 ID .540 23 .7 5/N 0.6 768 3 8ul 1 <1 .1 NDO 846 501/512 49 - 85 US-09.9 ID .540 26 1.3 <20 1.6 768 3 Sul NDO NDO 846 501/512 49 - 107 US-09.0 ID .540 <20 .9 5/N 0.7 693 5 8m1 1 1 .1 1 1 0.4 757 502 50 - 1 14+07.2/ ID .540 <20/31 .7/1.2 5/N/<20 .7/1.2 682 1 15.20.2 8ul 1/1 <1/<1 .3/.4m NDO 757 502 50 - 101 05-30.7 ID .M0 <20 1.7 (20 1.3 768 5 6=1 1 <1 .4 1 1 0.4 842 502 50 - 102 US-29.9 ID .540 33 1.7 26 1.4 768 5 -7 8m1 1 <1 .5 1 1 0.4 842 502 50 - 104 U5-06.1 ID .540 <20 .8 5/N 0.7 721 5 8ul 1 (1 .1 NDO 757 502 51 - 2 15+02.8 ID .540 55 .7 33 0.8 682 1 8m1 NDO NDO 750 500 51 - 2 15+03.2 ID .540 24 .7 23 0.7 682 1 8m1 NDO NDO 750 500 51 - 2 15+15.3 ID .540 34 .5 5/N 0.5 682 1 8mi NDO NDO 750 500 51 - 2 15+19.9 ID .540 45 .8 30 0.9 682 1 -15 Sul NDO 1 1 0.4 750 500 51 - 2 15+29.6 ID .540 <20 1.0 <20 0.9 682 1 8mi NDO NDO 750 500 51 - 2 15+39.5 ID .540 31 .7 20 0.8 682 1 -11 8=1 1 1 .2 NDO 750 500 51 - 92 14-09.1 ID .540 <20 .7 IDC 0.5 769 1 Sul 1 <1 4 NDO 842 500 1464m/ga

_ - . _ . . - _ . . - _ , _ . . - . _ - - .._ _ - - - --_.--__.m __ _. m . _ - _ . _ - _ _ . . _ _ .. _ - - _ . _ .- __ .-m

^

0756 ISI LIST STSE A 11I LIST 73a 733 AEL 1 APPEISII III .

P4GE 15 of 41 i 1904 .1906 - 5M' I 1 (540) 1 (540) 5M Chante amme Tube tae=tian t hriais i 7._'_-- Cails F --- famil Walts Calls F --- famil Valts 1834 Amel ten. Amel tea. in 1 "-- -as $ art

! 51 - 92 14-03.6 ID .540 26 .9 Sm 0.7 769 5 4 Sul 1 1 .1 ISD 842 500 51 - 92 14 05.6 10 .540 26 .5 IK 0.5 769 5 1 emi ISD ISD 842 500 t

! 52 - lie US-06.7 10 .540 24 .6 SM 0.4 655 5 eul 1 <1 .9 1 1 0.3 751 502 52 - 110 US-05.3 ID .540 28 .5 5 /96 0.6 655 5 Sul NDD NDD 751 502 .

52 - 113 US-19.5 ID .540 <20 .7 Sm 0.6 655 5 Sul 1 1 .2 teD 757 42

]

L

] 52 - 113 US-10.2 ID .540 <20 .8 5/N 0.7 655 5 8ul ISD ISD 's57 502 i 52 - 123 US-02.3 ID .540 33 .7 54 0.0 759 5

Sul 1 1 .3 N00 762 . 502 a

1 53 - 63 US-13.2 ID .540 <20 .9 <20 1.0 770 3 l 81 1 1 .2 sep 842 500 1

53 - 63 US-11.3 ID .54* <20 .0 <20 0.0 770 3

! Sul ISD ISO 842 500 1

i 53 - 63 US-99.0 ID .540 26 1.0 <20 1.1 770 3 Sul NDD ISO 842 500

]

i 53 - 63 US-01.1 ID .540 <20 .8 5 /98 0.6 770 3 ,

Sul see ISD 842 500 53 - 123 US-17.2 18 .540 30 .7 5 /98 0.7 655 le Sul 1 c1 .2 NDO 757 509

55 - 120 US-14.3 ID .540 <20 .6 IK 0.5 615, 654 5 Sul NDO ISO 754 502

{

55 - 120 US-11.7 ID .540 26 .7 IK 0.5 615, 654 5 j Sul 1 2 .2 1 1 0.3 754 502 i

i US-06.5 ID .540 27 .5 IK 0.4 615, 654 5 ISD Imp 754 502 l 55 - 120 8=1 55 - 124 15-09.2 ID .540 22 .6 5/ts 0.6 615, 654 5 Sul 880 980 673 502 1464m/apa i

. - . , , . , , - - - - - . . , . - - - - - - . m, - _ . - _ . . _ ,

. . . - - - . . - . m= - . , _ . .

SISE ISI LIST OTSE a Ii! LIST TOR 701 REV. 1 APPEteII III

.PAGE 16 of C1 1984 1986 - SM

% (540) 1 (540) 5M - Chante an- Tien t=<=+ime iWinin 7 a l Cails F -- tamit val ts cails F--fam11 valts lead anel lan_ amm1 ans. in 1 -

--tm sert -

55 - 124 15+14.3 ID .540 25 2.1 <20 1.7 615, 654 5 Sul 1 I .5 sep 673 502

%- 68 US-09.8 ID .540 <20 2.9 f20 3.5 772 3 Sul 2 1 .5 1 1 0.6 842 515

%- 93 US-07.0 ID .540 30 .7 $/ts 9.7 772 5 Sul 1 1 .3 ISO 846 502

% - 123 15+02.6 10 .540 <20 .6 IOC 0.5 654 5 Sul 1 I .3 N00 755 502/512

% - 123 15+11.2 ID .540 <20 .8 5 / 98 0.7 654 5 Sul see ISO 755 502/512

% - 123 15+40.3 ID .548 34 .6 5/ts 0.5 654 5 Sul sed ISO 755 502/512 57 - 63 US-09.3 ID .548 23 1.9 <20 2.4 772 3 Sul 1 <1 .5 1 1 0.8 842 500 57 - 65 US-88.8 ID .540 26 1.2 20 1.1 772 3 -6 Bul 1 I .2 1 1 0.4 842 502 57 - 65 U5-05.9 10 .540 23 .7 <20 0.6 772 3 Sul ISO see 842 502 57 - 92 U5 4 .7 ID .540 20 .6 5 / 98 0.6 773 5 Sul 1 2 .2 ISO 842 502 58 - 25 U5-02.9 10 .540 <20 .7 20 0.6 896 1 Sal 1 (1 4 ISO 848 514 58 - 94 US-82.2 ID .540 23 1.0 5/N 0.9 773 5 Sul 1 1 .2 ISD 842 ,

502 58 - ISS US.84.0 ID .540 33 .8 IOC 8.7 773 5 Sul 1 1 .2 seo 842 502 58 - 117 US-95.6 10 .540 31 .7 $/4 0.6 654 5 Sal I <1 .5 1 1 0.4 755 502 58 - 128 US-06.6 ID .540 38 .7 IDC 0.5 654 5 Sal 1 1 .2 NDO 755 502 60 - 1 09-09.0 ID .540 <20 .9 5 / 98 0.9 684 1 Sal NDO ISD 762 500 1464s/ga

ST56 151 LIST OTSG A ISI LIST TOS L.,1 mEv. i APPENDIX III PAGE 17 cf 41 1984 1986 - SM 1 (540) 1 (540) 5M Change aan Tube tacatina fWiain F. i Cails Nu fam11 valts Cails Nu 18 11 Val ts 1984 Reel No. Reel No. in 1 " - -hs $ art 60 - 1 06-03.3 ID .540 20 1.2 <20 1.7 684 1 8m1 1 1 .2 NDO 762 500 60 - 65 US-09.0 ID .540 26 1.1 <20 1.0 775 3 8=1 1 1 .3 1 1 0.3 842 519 60 - 79 US-15.3 ID .540 23 .7 <20 0.8 775 3 Sul 1 1 .3 NDO 841 502 60 - 125 15+25.0 ID .540 28 1.2 23 1.0 654 5 -5 Sul 1 1 .4 1 1 1.0 755 502 60 - 125 15+25.6 ID .540 22 1.6 <20 1.5 615, 654 5 8=1 1 <1 .7 1 1 0.5 755 502 60 - 126 15-14.2/ ID .540 <20/31 .5/I.0 5/N/<20 0.5/0.9 615. 654 5 15-06.5 8=1 I/1 <e/1 .1/.2 1/1 1 0.2/0.7 754 515 60 - 126 15+12.5 ID .540 22 .5 IDC 0.4 615, 654 5 Sal NR NDO 754 515 60 - 126 15+13.7 ID .540 22 .7 IDC 0.6 615, 654 5 8=1 1 I .3 NDO 754 515 60 - 128 US-06.4 ID .540 24 .9 5/N 0.8 615, 654 5 Sal 1 1 4 1 1 0.4 755 502 C1 - 124 US+01.9 ID .540 <20 1.9 <20 1.7 653 5 Sul 1 <1 .3 1 2 0.4 850 502 62 - 124 US+04.3 ID .540 <20 1.8 <20 1.5 653 5 Sul 1 c1 .4 NDO 757 502 8ul Multiple 63 - 37 14+02.8 ID .540 <20 7.0 <20 0.6 809 1 Sul 1 <1 .8 1 1 1.2 841 514 63 - % US-12.0 ID .543 (20 .7 5/N 0.6 776 5 Sul NR NDO 841 502 63 - % US-11.1 ID .540 <20 1.2 5/N 1.0 776 5 Sul 1 1 .3 NDO 841 502 63 - % US-09.9 ID .540 <20 1.4 <20 1.3 776 5 8x1 1 1 .3 1 1 0.4 841 502 63 - % US-07.5 ID .540 20 1.0 20 1.0 776 5 0 8=1 1 1 .4 1 1 0.4 841 502 1464m/ga

OTSG ISI LIST OTSG A ISI tfST TDR 781 REV. 1 APPDOIX III PAGE O of di 1984 1986 - SM 1 (540)  % (540) SM Change Row Tube tocation Oriain Probe Coils Phase (Buli Volts Coils Phase f8 mil Volts 1984 Reel No. Reel No. in % Remarks Sart 64 - 127 US-04.7 ID .540 <20 .7 S/N 0.5 653 5 8=1 1 1 .2 NDD 841 502 65 - 127 15+30.0 ID .540 <20 .9 $/N 0.9 615, 653 5 8m1 1 <1 .4 NDD 755 502 66 - 93 US-04.8 ID .540 20 1.0 $/M 0.7 778 5 8m1 1 1 .3 NDD 841 502 66 - 127 US-01.7 ID .540 28 1.1 26 1.2 652 5 -2 8m1 1 1 .5 1 1 0.7 841 502 67 - 93 US-II.9 ID .540 <20 .6 S/N 0.4 779 5 Bul 1 1 .2 rDD 541 502 C7 - C3 US-10.7 ID .540 (20 .7 $/N 0.6 779 5 8=1 1 1 .2 NDO 841 502 67 - 93 US-10.1 ID .540 <20 1.1 20 0.9 779 5 Bal 1 2 .2 1 1 0.4 841 502 67 - ID US+01.0/ ID .540 <20/38 .7/1.7 S/N/<20 0.7/1.3 652 5 US+06.6 Bal 1 I .3 NDD 841 502 C7 - 130 US+02.3 ID .540 (20 .7 $/N 0.7 652 5 Sal i I .2 NDD 841 502 70 - 88 US-09.0 ID .540 50 .5 $/N 0.5 780 5 8mi NDD NDD 84I 503 70 - 88 US-06.3 ID .540 26 .8 S/N 0.6 780 5 8ul 1 I .3 NDD 842 503 70 - 124 US+05.8 ID .540 <20 1.2 (20 1.0 652 5 Bal 1 2 .4 1 1 0.4 757 503 72 - 21 US-11.0 ID .540 30 1.0 26 1.0 812 1 -4 Bal 1 (1 .3 NDO 841 500 72 - 54 US-14.0 ID .540 26 1.1 <20 1.4 813 3 Bul 1 2 4 NDO 841 500 72 - 86 US+03.7 ID .540 36 1.1 36 1.0 782 3 0 8ml 1 1 .3 2 1 0.4 841 503 72 - 100 12-10.8 ID .540 20 2.0 20 1.6 782 5 0 Nultipie 8ml I <l .2 NDO 842 503 1464m/qa l

i

I '

C756 I5I LI;T STSE A ISI LIST , TSE 701 OEV. 1 APPEISIR III PAGE 19 of di IW4 1M6 - SM

% (540) 1 (540) 5M Change Amr Th taratian I Wiaii r 7.1 Cails P"-- f amil Valts fails P"-- f8 mil Valts 1984 Amel tea. Emel Ida. in 1 " - -hs $ art 73 - 22 US-05.0 ID .548 33 1.0 20 1.2 813 1 Sul 1 I .3 NDO 841 500 -13 l

l 73 - 129 15-02.7 ID .540 <20 .8 5 / 98 0.7 651 5 Sul NDO peo 757 503 -

l 73 - 129 15 07.4 ID .540 <20 .6 5 / 98 0.6 651 5 8m1 NDO NDO 757 503 73 - 129 15+19.1 ID .540 <20 1.1 <20 1.0 651 5 8ul 1 1 .3 NDO 757 503 74 - 50 US-01.3 ID .540 33 1.0 5/N 0.8 814 3 8ul 1 2 .9 1 1 0.4 841 500 71 - 83 US-10.9 10 .540 20 1.0 <20 1.2 783 3 Sul 1 I .3 1 1 0.3 842 503 75 - 81 US-10.7 ID .540 33 1.4 33 1.5 767 3 0 Sul 1 1 .4 1 1 0.4 841 503 75 - 122 US-41.4 ID .540 30 1.5 <20 1.4 615, 651 5 Sul 1 1 1.4 1 1 0.6 676 503 123 US-25.8 ID .540 <20 .8 5/N 0.7 615, 651 5 8=1 ISO 1 1 0.4 754 503 75 - 123 US-24.3 ID .540 29 .8 <20 0.8 615, 651 5 Sat 1 1 .3 1 1 0.2 754 503 75 - 123 US-22.1 ID .540 24 1.9 30 1.6 615, 651 5 +6 8=1 ISO 1 1 0.7 754 503 77 - 37 07+00.0 OD .540 <20 1.1 (20 1.2 814 1 8=1 1 4 .3 1 4 0.5 841 514 77 - 122 14-01.4 ID .540 <28 1.9 <20 1.5 615 5 Sal 1 I 4 NDO 676 505/511 77 - 122 US-80.8 ID .540 <20 1.2 <20 1.0 615, 651 - 5 8m1 1 I .3 ISO 676 505/511 77 - 126 15+18.4 ID .540 24 1.0 23 1.0 651 4 -1 Sul 1 <1 .5 1 1 0.3 755 505 78 - 90 US+05.0 ID .540 <20 1.1 26 1.5 765 4 Sul 1 1 4 1 1 0.5 841 514 1464=/ga

r

( OT5G ISI LIST r OT5G A ISI LIST TOS 701 AEV. 1 APPOSIX III l

PAGE 20 of 41 l

1984 1986 - SM 1 (540) Z (540) SM Cheage ans Ti.he faratiam f kriaii r 7.1 Cails N == famil valts Cails N -- fanti valts i m anel tam. Real Isa. in 1 " - -h s Sart t 79 - 83 US-06.8 ID .540 36 .8 <20 1.0 765 4 Sal 1 1 .2 MID 841 505 79 - 84 03-10.5 00 .540 29 1.1 33 1.2 614, 765 4 8=1 2 4 .5 2 4 0.5 758 505 79 - 1 0 12-03.6 ID .540 <20 1.5 <20 1.3 650 4

( Sul NDO ISO 754 505 l

79 - 130 15+04.8 ID .540 (20 1.3 <20 1.3 650 4 Sul 1 1 .7 1 1 0.4 754 505 79 - 1 0 U5+05.5 ID .540 45 1.1 36 1.0 650 4 8m1 NDD NDO 754 505 79 - 130 U5 06.5 ID .540 <20 .8 <20 0.8 650 4 l Sul te0 98 0 754 505 l

! 81 - 24 US-12.7 ID .540 20 1.2 <20 1.2 816 1 1

Sul 1 1 4 1 2 0.4 842 514 81 - 30 US-18.6 ID .540 <20 .8 <20 0.8 816 1 Sul 1 <1 .2 1 1 0.2 842 503 81 - D US-13.9 ID .540 (20 .8 (20 0.9 816 1 8m1 1 <1 .2 1 1 0.4 842 503 81 - 1 0 12-01.3 ID .540 27 .9 5/M 0.8 615, 650 4 8m1 1 <1 4 NDO 676 505 81 - 1 0 12+13.5 ID .540 <20 .7 5/N 0.7 615, 650 4 Sul NDO ISO 676 505 81 - 130 12+14.9 ID .540 29 .9 IleF 615, 650 4 8=1 NDO NGO 676 505 81 - 130 15+12.9 ID .540 27 .8 5/N 0.7 615. 650 4 N1 tiple Sul NDO ISO 676 505 81 - 130 15+26.3 ID .540 <20 .9 5/N 0.8 615. 650 4 hitiple 8ul NDO see 676 505 82 - 55 US+05.6 ID .540 30 1.7 <20 1.1 845 3 8m1 1 1 .3 880 849 503/507 82 - 128 15+07.9 ID .540 24 1.0 (20 1.0 650 4 81 1 1 .4 NDO 754 505 1464m/ga l

,=.

• III LIII OT5E A I5I LIST Tea 781 BEV. 1 APPEm!X III PAGE 21 of di 1984 1906 - SM ,

% (540) Z (540)

• 5M Chea9e an. T.As taratian nriaiii ?. t. Calls P"-- f am11 valts Calls Ph=== 18 11 valts 1984 anal ass. maal tan. In Z -- - is sert l 83 - 17 15 08.7 ID .540 429 .9 (29 0.9 686 756 503 1

Sal NDO te0 l 83 - 17 US-13.8 ID .540 <29 1.2 <29 1.2 686 1 Sul 1 1 .3 NDO 756 543 l 83 - 17 US-10.8 ID .548 Sul 24 le0 1.3 I

33 1

1.2 8.4 686 756 503 1 +9 83 - 29 US-12.4 ID .546 23 .9 26 0.6 838 1 +3 j Sul 1 2 .3 1 1 0.3 842 543 1 83 - 131 US+64.6 ID .548 <29 1.4 <29 0.8 650 4 8=1 1 <l .4 NDO 757 505

, 84 - 103 US-13.7 ID .540 48 .7 5/N 1.9 74 4 Sul 90 0 NDO 752 505 l

84 - 103 US-10.2 ID .540 24 .5 5/N 0.9 746 4 Bul 1 1 .2 10 0 752 505 84 - 131 US-25.4 ID .548 <29 .7 5/N 0.5 615, 650 4 ami see see 758, 850 505 84 - 131 US-16.1 ID .540 <20 .8 5/N 0.6 615. 650 4 Sal I <1 .2 seo 758. 854 545 seel 758 NDO

, 84 - 131 US-10.3 OD .540 <29 2.5 <20 2.2 615, 658 4 Sul 3 4 .9 3 4 0.9 758. 850 545 I .

l 86 - 20 US-02.9 ID .548 <20 .9 5/se 0.9 820 1 8ul 1 1 .2 seo 842 514 87 - 1 12 06.9 ID .540 33 2.9 23 2.7 622, 698. 760 1 -10 8st 1 1 1.3 1 1 0.9 674 583 87 - 1 12+07.3 ID .540 <20 3.2 <29 3.1 622, 698. 760 1 l

aul 1 1 .9 I I 1.0 674 503 l

f 87 - 20 US-16.2 ID .540 <20 .6 5/M 0.6 820 1 Sul NDO NDO 842 503 87 - 20 US-13.0 ID .540 33 .8 5 /98 0.9 228 1 8=1 1 <1 .2 NDO 842 503 15 03.7 .540 34 5/M 0.9 649 4 88g-.124 ID .8

'. 8=1 1 1 .5 1 1 0.7 762 505 l

1464s/ga o- . _ ._, __

GT56 I5I LIST STSG A I5I LIST TER 781 SiV. 1 APPU SIR III PAGE 22 of C1 1984 1986 - 5M

% (540) 1 (540) 5 88 Chaa9e amu T.A. es,2 tina twinii i 7. "._ calls P"-- fanft valts calls F -- fam11 valts itas anel ene. anni san. in 1 - - - - 4s $ art 89 - 34 US-19.2 10 .540 26 .9 5.N 0.7 821 1 8=1 1 <1 4 sep 842 543 90 - 80 US-14.4 ID .540 34 1.2 22 1.0 742 3 -14 Eat i 1 .3 1 1 0.4 752 505 90 - 128 15-21.7 10 .540 22 1.0 $/98 0.7 614, 649 4 Sul peo 1 1 0.5 618 505 90 - 128 15 08.0 ID .540 28 2.2 26 1.8 614. 649 4 -2

- Sul 2 3 c.5 1 1 0.9 618 505 90 - 128 15 02.5 ID .540 34 1.1 26 1.1 614. 649 4 -8 Sul peo 1 1 0.4 618 505 90 - 128 15 84.2 ID .540 21 1.2 5 /18 1.0 614, 649 4 81 ISD 1 1 0.5 618 505 C1 - 90 US-80.0 ID .540 21 .7 <20 1.1 741 4 Sul 1 <1 .4 1 1 0.4 757 505 92 - 88 US.01.3 IB .540 <20 2.3 <20 2.5 740 4 Sal 1 1 .5 ISD 757 505 C3 - 27 US-48.3 ID .540 26 .8 26 0.8 823 1 0 Sal 1 I .3 1 1 0.3 842 503 C3 - 58 U5 02.9 ID .540 46 .7 5/N 0.7 823 - 3 Sul see 1 1 0.3 842 503 58 US-84.3 ID .540 23 1.2 <20 1.3 823 3 8=1 1 I .2 ISO 842 503 C3 - 58 US.05.0~ ID .540 20 1.0 (20 0.6 823 3 Sul 1 1 .2 ISO 842 503 US 00.8 ID .540 28 1.0 SAs 0.9 740 4 C3 - 90 Sul 1 1 .2 see 757 505 94 - 117 US-02.7 ID .540 28 1.7 20 1.7 614, 648 4 -8 Sul 1 1 .4 1 1 0.4 755 505 4 5/It 0.5 024 2 95 - 34 US.82.6 ID .540 30 .9 Sul 1 1 .2 peo 842 503 95 - 34 US+01.1- ID .540 <20 .6 33 0.8 824 2 Sul 800 18 8 842 503 1464m/ga

OTSG ISI LIST OT5E A ISI LIST TSR 701 REV. I APPEISIX III PAGE 23 of <1 1984 1996 - SM

% (540)  % (540) SM Change Ems Tashe facatian I Winii t P;-i Cails Phau faal) Valts Calls Phau tan 11 Valts 1984 Emel tin. Emel tea. in T "----km Sart 95 - 123 G 82.1 ID .540 24 3.2 30 3.0 640 4 +6 Sat 1 1 .7 2 2 0.5 754 505

% - 11.3 15+45.8 ID .540 24 .9 5 / 98 0.7 648 4 Sal 1 <1 .2 too 754 585 C7 - 28 us+42.1 ID .540 <29 1.6 5/ts 0.9 825 2 8si 1 1 .3 leo 842 503 C7 - 41 US-43.7 ID .540 <29 7 5 /98 0.4 825 2 81 1 I .3 sec 842 503 100 - 34 US.45.8 ID .540 36 .9 5 /98 8.8 827 2 Sal 1 <1 .5 1 1 0.6 842 503 100 - 122 US.45.2 ID .540 25 1.7 (29 1.5 614, 647 4 Sul 1 1 c.5m 1 1 9.7 618 505 Sul N1tiple C1 - 16 US-15.2 ID .540 28 1.2 29 1.2 606 2 -8 Sul 1 1 .3 1 I 8.4 756 583 i 101 - 16 US-14.1 ID .540 <29 .9 <29 1.1 686 2 Sal ISO 1 1 0.6 756 503

, C1 - 55 US+06.1 ID .540 <29 1.1 $/te 1.0 627 3 81 1 1 .4 too 842 543

! C1 - 61 US-16.4 ID .540 38 1.9 26 1.6 735 3 -12 Sul 1 1 4 1 2 9.4 752 543 C1 - 69 US-82.6 ID .540 38 .9 5/9s 8.8 735 3 Sul 1 1 .2 ISO 752 545 l 103 - 57 US-42.3 ID .540 <20 .5 5 /98 9.4 828 3

! Sal 1 <1 .2 800 842 503 103 - 57 US-40.8 ID .540 <29 .9 <29 8.6 828 3 I 8=1 too 1 1 0.2 842 503 i

103 - 57 US+42.9 ID .540 <20 .7 5/ts 4.4 828 3 Sul te3 1 1 0.2 842 503 103 - 57 US+45.0 ID .540 33 .7 5 /18 4.6 828 3 Sul . I <1 .3 18 0 842 583 ID .540 <29 .6 0.6 646 4 C3 - 121 14+45.8 5 / 91 8=1 est too 755 595 8ul leultiple 1464s/ga

STSE !$2 LIST STSE A 11I LIST TSO 781 SEV. 1 APPOSill III l PaGE 24 of 41 1984 1906 - 588 l

1 (540) 1 (540) See Change ansim = tian twinio . i tails F -- ranti valts calls F -- t an t i waits tese an.1 ana_ amel L . in 1 -----as sert 103 - 121 14+11.2 ID .540 <20 .8 <20 0.9 646 4 Sul em se0 755 505 14+12.4 ID .540 28 1.2 23 1.0 646 4 -5 103 - 121 8=1 1 1 .3m ISD 755 505 C]3 - 121 14+15.8 ID .580 24 1.0 23 1.0 646 4 -1 81 se i 1 0.5 755 505 l

.540 34 2.2 26 2.1 646 4 -8 l103-121 15 43.3 ID 8=1 1 1 .9m i 1 0.9 155 505 i

1 ID .540 24 1.2 20 1.0 646 4 -4

. 103 - 121 15+43.8 Sal le 1 1 0.5 755 505 l

t.% 83.6 ID .540 20 .9 5/Is 0.6 829 2 i 104 - 24 8=1 1 1 4 1 1 0.2 842 507 l 104 - 121 14 03.1 ID .540 31 1.5 <20 1.6 646 4 I 8=1 1 1 .2 1 1 0.7 754 505 104 - 123 15+45.3 ID .540 33 1.2 23 1.4 646 4 -10 See Isote 2 i

8=1 1 1 0.7 505 104 - 123 US-84.91 ID .540 <20/31 .8/1.4m <20/38 0.6/2.2 646 4 84ultiple L% 82.9 Sul 1/2 <t/3 .1/3.le 1/2 1/4 0.5/4.4 754, 757 504 Indications ID .540 56 1.7 46 1.6 646 4 -10 See feste 2 104 - 123 TSH+1.2 504 8=1 2 1 1.6 105 - 94 14+00.0 00 .540 23 1.6 21 1.7 733 4 -2 8=1 1 4 .3 1 4 0.6 758 505 ID .540 (20 1.4 <20 1.1 646 4 105 - 118 14 86.8 8=1 1 I .3 88 0 755 505 IB .540 31 1.2 <20 1.1 646 4 ISS - IC3 14+17.4 505 .250" Coil 8=1 1 1 .3 10 0 703 Only 106 - 29 US+03.1 ID .540 <20 2.4 30 2.3 836 2 8=1 1 1 .5 1 1 0.5 842 514 US.03.9 ID .540 30 1.5 26 1.8 830 2 -4 106 - 29 8=1 1 1 .2 1 1 0.3 842 514 e

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STSE ISI LIST SYSE A I11 LIST Fat 731 )

REV. 1 APPENDIX III PAGE 25 of C1 IW4 IW6 - SM 1 (540) 1 (540) 5M Chante home Tashe faratian 1 H aii t ". a fails P " - famil Welta Cails F -- famil Valts IM4 Amel the . Amel him. in Z " -- - -t m Sart

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! 187 - 53 US.41.4 ID .548 <29 .8 $m O.8 830 ,

3 Sal 1 1 .3 ISO 842 503 187 - 53 US.43.5 ID .540 <29 1.5 52 8.8 830 3 '

Sal 1 1 .3 NDO 842 503 CF - 53 U5 04.6 ID .540 <29 1.1 Sm 8.8 838 3 Sul 1 1 .3 ISD 842 503 i 187 - 55 US-12.3 ID .540 33 .5 SM 8.8 830 3 Sal 1 1 .3 sep 842 503 C7 - 55 US-47.8 ID .548 23 .9 <29 1.0 830 3 Sal 1 1 .3 1 1 S.4 842 503 I l

187 - 55 US-45.4 ID .540 <29 .7 Sm 0.7 830 3 Sul le0 ISO 842 503 147 - 116 US-82.7 ID .548 29 .7 Sm S.8 614, 645 18 8m1 1 <1 .2 10 0 755 506 C7 - 120 05+49.2 10 .548 24 .6 Sm 0.4 645 18 i 8=1 NDO ISO 618 506 l 107 - 129 97-15.7 ID .540 21 .9 36 8.9 614, 645, 699. 761 18 8=1 NDO ISO 618 506 187 - 129 US-61.4 10 .540 22 1.5 <29 1.6 614. 645, 699. 761 18 l Sal 1 1 c.5 1 1 8.4 618 506 i 187 - 129 US.43.5 ID .540 22 1.1 <29 1.1 614, 699. 761 18 -i Sal 1 1 c.5 see 618 506 197 - 129 US+C3.8 ID .540 <29 1.3 26 1.1 614, 699. 761 18 8=1 1 1 c.5 1 1 8.4 618 506 1464=/ga

ST56 ISI LIST STSG A ISI LIST TER 701 SEV. 1 APPDe!K III PAGE 26 of C1 1984 1906 - SM 1 (540)  % (540) SM Chan9e Ems Th faratian diriaiii ". A Cails P'-- f ami) Valts calls P' -- fam11 val ts 1 M4 Rael Inn. Rael ten. In 1 " - -ks Sart IS7 - 129 US.45.8 ID .540 27 1.3 38 1.2 614, 645. 699, 761 18 +3 Set i 1 c.5 1 1 0.5 618 546 ISS - 27 US-16.7 ID .540 <29 .8 54 0.8 831 2 8=1 1 1 4 1 1 0.7 842 563 199 - 54 US-15.7 ID .548 29 .9 <29 1.3 831 3 8=1 1 1 .3 1 1 4.6 842 503 l 109 - 59 US-12.7 ID .540 26 .7 Sm 8.7 831 3 l Sul 1 1 .4 ISO 842 543 US-28.1 ID .548 <29 .5 5/N 8.5 645 4 l 109 - 108 .2 NDO 755 505 l Sa1 1 1 199 - 108 US.43.8 ID .540 31 2.8 38 2.6 645 4 -1 0.8 545 Sal 1 1 .6 1 1 755 109 - 108 T5H.4.0 ID .540 30 1.0 23 1.9 645 4 -7 See Note 2 Sal 1 1 0.3 505 110 - 2 15+21.6 ID .540 <20 1.1 <29 1.0 626 2 Sal 1 1 .4 8e0 751 503 ID .540 <28 1.4 <29 1.34 626 2 IG - 2 15+27.0 543 8=1 1 1 .3 NDO 751 ID .540 76 1.3 IIeF 626 2 Mis 110 - 2 US-40.1 8=1 900 ISO 751 503 ID .546 38 54 0.7 626 2 Min 1G - 2 US.62.2 .9 Bal 1 1 .2 ISO 751 503 ID .540 <20 1.7 28 1.3 831 4 1 0 - 52 US-06.3 Sal 1 1 4 ISO 842 503

.540 <20 1.7 <20 1.5 831 4 1 G - 52 US.41.8 ID 0.5 842 583 8=1 1 I .5 1 1 ID .540 26 1.2 <29 1.1 831 4 IG - 52 US.02.6 Sul 1 1 .5 1 2 0.4 842 503 ID .540 3e 4 Sm 0.5 831 4 lie - 53 uS-12.2 Sa1 NDD 10 0 842 514

.540 <20 .7 5/N 8.3 831 4 1 0 - 53 US-85.3 ID 8st see ISO 842 514 1464s/ga

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3 STSG ISI LIST STSE A ISI LIST TSR 781 REW. 1 l APPD SIM I!!

l PAGE 27 of C1 1984 1996 - SM 1 (540) 1 (540) 5M Chan9e aan Tune taratina f Wiaii , 7. _ Cails P' - - famil Valts Cails P' -- (Amit val ts 1984 Amel us. Real um. in % " - -hs sert 1 ~) - 53 US-08.9 ID .540 20 .7 5/te 0.6 831 4 Sul 1 1 .3 NDO 842 514 111 - 33 US.04.7 19 .540 24 1.2 <20 1.4 730 2 8=1 1 41 .7 NDD 753 503 Ill - 51 U5-07.6 ID .540 23 1.8 (20 1.6 832 4 Sul 1 1 .5 1 1 0.5 842 503 til - 51 US-02.0 ID .540 <20 .6 5/N 0.6 832 4 8et 1 41 .1 80 0 842 503 111 - 51 US-08.7 ID .540 (20 .8 5/N 0.7 832 4 Sal 1 (1 4 1 1 0.4 842 503 Ill - 64 US-41.4 ID .540 33 .6 5/N 0.5 832 4 8=1 1 I .4 1 1 0.3 842 505 112 - 116 12 26.1 ID .540 41 1.6 Iter 644 4 SmI eWO NDO 755 505 112 - 116 12+28.8 ID .540 83 .6 Iser 644 4 8st NDO NDO 755 505 112 - 116 13 04.8 ID .540 23 1.6 23 1.3 644 4 0 See Note 2 8mi 1 <1 .3 NDO 755 505 112 - 116 13 08.0 ID .540 38 7 5/N 0.7 644 4 Sal 1 <1 .2 NDO 755 505 112 - 116 12+21.5 ID .540 30 20 1.4 644 4 -10 See Note 2 8st 1 1 0.6 505 ID .540 34 3.6 33 2.2 692 4 -1 113 - 100 US.05.7 8x1 Multiple 8=1 1 2 2.6m 2 2 1.7 757 505 113 - 100 T5H+5.3 ID .540 33 3.6 36 3.4 692 4 +3 See Note 2 Sul 2 3 2.3 505 ID .540 28 1.0 23 0.8 644 4 -5 113 - 104 15+21.7 8=1 1 <1 .3 1 1 0.5 754 505 14-13.8 ID .540 28 2.2 <20 2.0 644 4 114 - 113 Sul 1 1 4 NDO 754 505 114 - 113 14-06.6 ID .540 31 2.3 20 2.1 644 4 -11 Sul 1 1 .4 1 1 0.4 154 505 1464m/ga

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OTSG ISI LIST OTSG A ISI LIST TDR 781 REV. 1 APPEMlIX III PAGE 33 af 41 1984 1986 - SM

% (540) 1 (540) SM Change

.. Row Tube Location Oriain Probe Calls Phase (8x1) Volts Calls Phase faxil Volts 1984 Reel No. Reel No. in 1 Ramarks Sort

-135 - 2 15+35.5 ID .540 26 1.2 26 1.2 632 2 0 See Note 2 8x1 1 1 0.4 1 1 0.4 674 504

' 135 - 5 15-07.5 In .540 21 1.6 <20 1.3 632 2 8x1 1 1 .2 1 2 0.4 674 504 136 - 2 14+05.2 ID .540 21 1.5 (20 1.2 632 2 8x1 1 1 .2 1 1 0.3 674 504 136 - 2 14+02.9 ID .540 (20 1.1 S/N 0.9 632 2 8xl NDD 1 1 0.2 674 504 136 - 2 14+10.1 ID .540 <20 1.2 S/N 1.0 632 2 8x1 1 <1 .4 I I 0.3 674 504 136 - 2 14+15.4 ID .540 <20 .8 S/N O.7 632 2 8x1 1 <1 .3 1 1 0.2 674 504 136 - 4 15-18.0 ID .540 <20 1.1 <20 0.8 632 2 8x1 1 1 .5 1 1 0.3 674 504 136 - 4 15-11.8 ID .540 28 .7 20 0.8 632 2 8x1 NDO NDD 674 504 136 - 4 15-03.6 ID .540 34 .9 23 0.7 632 2 -11 8x1 1 1 .3 NDD 674 504 136 - 4 15+04.2 ID .540 38 1.1 30 1.1 632 2 -8 8x1 1 1 .3 NDO 674 504 136 - 4 15+11.8 ID .540 34 1.4 26 1.3 632 2 -8 8x1 1 2 .3 1 1 0.2 674 504 136 - 5 US-13.8 ID .540 <20 1.1 S/N 0.7 632 18 8x1 1 1 .6 1 1 0.4 674 506 136 - 5 US-07.8 ID .540 38 1.7 26 1.2 632 18 -12 8x1 1 1 .5 NDD 674 506 4

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OTSG ISI LIST DTSG A ISI LIST TDR 781 REV. 1 APPEteIX III PAGE 34 of G1 1984 1986 - SM

% (540)  % (540) 5M Change Row Tube Location Oriairi Probe Calls Phase (8x1) Volts Calls Phase (8x1) Vol ts 1984 Reel No. Reel No. in % Remarks Sort 136 - 6 US-11.1 ID .540 28 2.0 36 1.2 632 6 +8 8x1 1 <1 .1 1 1 0.8 674 506 136 - 6 US-07.2 ID .540 (20 .9 S/N 0.8 - 632 6 8x1 1 1 .2 NDD 674 506 136 - 54 US-03.6 ID .540 <20 .5 (20 0.7 689 4 8xl 1 1 .I NDD 758 504 136 - 54 US-05.2 ID .540 <20 .5 (20 0.6 689 4 8x1 1 1 .2 NDO 758 504 136 - 69 15+08.7/ ID .540 <20/28 <1/2.3 <20/20 0.6/2.5 613, 685 4 US-03.0 8x1 1 <1/1 <.5m 1/1 0.2/0.5 618 504 8x1 Multiple 138 - 65 US+05.7 ID .540 34 1.9 26 1.6 685 4 -8 8x1 1 1 .7 1 1 1.1 753 514 139 - 71 14-09.9 ID .540 28 1.7 30 1.8 613, 685 4 +2 .

8x1 1 1 .5 1 1 0.4 674 504 139 - 71 14-05.1 ID .540 <20 .8 S/N 0.8 613, 685 4 8x1 NDD NAD 674 504 139 - 71 US-07.2 ID .540 23 .6 S/N 0.6 613 4 8x1 NDD NDD 674 504 139 - 71 U5-04.9 ID .540 21 1.1 20 1.0 613, 685 4 -1 8x1 NDD 1 1 0.3 674 504 US+03.1 ID .540 <20 1.2 26 1.1 613 4 140 - 67 8x1 1 1 .2 NDD 618 504 141 - 3 15-05.2 ID .540 34 1.5 23 1.4 633 2 -11 8x1 1 1 .7 1 1 0.5 674 504 141 - 3 15+07.8 ID .540 21 1.3 23 1.2 633 2 +2 8x1 1 1 .2 1 1 0.4 . 674 504 141 - 3 15+15.1 ID .540 38' .9 S/N 0.9 633 2 8x1 NDD 1 1 0.5 674 504 141 - 3 15+30.1 ID .540 38 1.4 30 1.2 633 2 -8 i 8x1 1 1 .4 1 1 0.4 674 504 ID .540 28 1.3 33 1.2 633 2 +5 141 - 3 15+32.4 8x1 NDD 1 1 0.2 674 504 i

1464x/qa

OTSG ISI LIST DTSG A ISI LIST TDR 781 REV. 1 APPENDIX III PAGE 35 of 41 1984 1986 - SM

% (540)  % (540) SM Change Rgw Tube Location Oriain Probe Coils Phase (8x1) Volts Coils Phase (8x1) Volts 1984 Reel No. Reel No. in % Remarks Sort 141 - 3 15+34.2 ID .540 38 1.8 33 1.6 633 2 -5 8x1 1 2 .4 1 1 0.5 674 504 141 - 3 15+35.6 ID .540 36 1.1 33 1.1 633 2 -3 See Note 2 3x1 1 1 0.7 504 141 - 3 15+36.6 ID .540 26 1.0 26 0.9 633 2 0 See Note 2 ID 1 1 0.4 504 145 - 50 US+04.1 ID .540 29 3.4 33 3.2 613, 636 4 +4 8x1 Multiple 8x1 1 2 1.0 1 1 0.7 675 516 146 - 1 05-02.7 ID .540 34 1.7 33 1.6 635 2 -1 8x1 1 1 .4 1 1 0.4 753 504 146 - 3 13-10.8 ID .540 38 .8 S/N 0.7 635 2 8x1 1 2 .1 1 1 0.3 674 504 146 - 4 15-16.6 ID .540 31 .6 S/N 0.7 635 4 8wl 1 1 .3 NDD 674 517 146 - 4 15-11.1 ID .540 <20 .6 S/N 0.5 635 4 8x1 1 <1 .3 NDD 674 517 146 - 4 15-13.8 ID .540 (20 .5 $/N 0.6 635 4 I 8x1 NDD NDD 674 517 l 146 - 4 15-08.4 ID .540 <20 .9 S/N 0.8 635 4 8x1 NDD NDD 674 517 146 - 4 15-05.7 ID .540 (20 .4 NDD 635 4 8x1 NDD NDD 674 517

! 146 - 43 US-04.6 ID .540 (20 1.0 <20 0.9 636, 612 4 540 Multiple 8x1 1 1 .2 NDD 752 504 147 - 2 12+07.9 ID .540 <20 .6 S/N 0.6 612, 699, 760 2 8x1 NDD NDD 618 518 147 - 2 12+10.5 ID .540 32 - 1.0 S/N 0.8 612, 699. 760 2 8x1 1 1 <.5 NDD 618 518 147 - 7 15+25.5 ID .540 35 .8 S/N 0.7 612, 699. 760 2 8x1 1 1 <.5m NDD 618 504 8x1 Multiple 147 - 15 15+19.8 ID .540 28 1.0 23 1.1 635 18 -5 Bul 1 1 .2 NDD 674 506 1464x/qa

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OTSG ISI LIST OTSG A ISI LIST T M 701 REV. 1 APPEleIX III PAGE 36 of 41 '

1984 1986 - SM

% (540)  % (540). SM Change Row Tube tocation Orioin Probe Coils Phase (8x11 Vol ts Calls Phase (Bull Volts 1984 Reel No. Reel No. in 1 Remarks Sort 150 - 8 15+03.6 ID .540 28 1.0 <20 1.0 636 2 8x1 1 1 .2 NDO 675 504 150 - 8 15+18.4 ID .540 31 .9 23 0.9 636 2 -8 8x1 1 1 .5 1 1 0.3 675 504 150 - 8 US-03.8 ID .540 21 .9 23 1.1 636 2 +2 8x1 1 1 .2 NDD 675 504 4

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OTSG ISI LIST OTSG B ISI LIST TDR 781 REV. 1 APPENDIX III PAGE 38 0F 41 1984 1986 - SM

% (540) 1 (540) SM Change

_ Row Tube Location Oriairi Probe Calls Phase (8x1) Volts Coils Phase (8x1) Vol ts 1984 Reel No. Reel No. in % Reenarks Sort 43 - 114 U5-16.9 ID .540 <20 1.2 IDC 615 2 US-02, US+03 8x1 1 1 .3 NDD 712 500 43 - 114 US-15.0 ID .540 <20 1.8 IDC 1.3 615 2 8x1 1 1 .3 2 1 0.8 712 500 et - 63 14+11.3 ID .540 <20 1.0 NDD 615 19 Indications 8x1 w 1 1 .3 N/A 712, 711 Not Detected on Ree) 711 48 - 87 U5-02.0 OD .540 <20 .9 (20 .6 615 2 Note 1 8x1 1 4 .1 .,e NDD 712 500 49 - 87 US-02.2 OD .540 58 .5 S/N .3 615 2 8x1 1 4 .1 NDO 712 500.506 50 - 10 15+09.1 ID .540 <20 1.7 <20 1.3 611, 617 1 8x1 1 (14 .2 NDD 713 508 55 - 117 09+20.3 ID .540 <20 3.8 IDC 615 2 8x1 1 1 .3 NDD 631 500 55 - 117 09+29.4 ID .540 21 3.0 IDC 615 2 8x1 1 <1 .4 NDO 631 500 56 - 10 LS+24.0 OD .540 <20 3.5 <20 1.6 611 1 8x1 1 4 .8 3 4 0.8 716 500 58 - 117 10-02.7 ID .540 (20 6.0 <20 4.5 669 2 8x1 1 <1 .3 2 2 0.5 712 500 65 - 87 14+15.9 DD .540 <20 1.8 <20 1.0 615 2 8x1 2 4 .5 1 4 1.0 712 500 71 - 90 11+15.0 00 .540 <20 1.2 <20 .6 615 1 8x1 2 4 .6 2 4 0.3 712 500 80 - 12 09+00.0 00 .540 <20 1.8 <20 .7 612 1 8x1 1 4 .5 1 4 0.5 711 510 s

84 - 5 07+09.3 ID .540 <20- 1.8 <20 1.4 621 1 8x1 1 1 .3 NDD 713 500 84 - 5 07+11.7 ID .540 (20 2.0 <20 1.4 621 1 8x1 1 1 .3 NDD 713 500 89 - 5 US-00.3 ID .540 24 2.2 26 1.8 622 1 +2 8x1 Nultiple 8x1 , 1 3 .6m 1 2 3.6 716 501 Indications 1465x/qa v.

.. .-. - - _ - - ~ . . . -

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OTSG ISI LIST OTSG B ISI LIST TOR 781 REV. 1 APPEISIX III

-PAGE 39 Of 41.

1984 1986 - SM

% (540)  % (540) SM Change Raw Tube Locatian Oriairi Prr.h Calls Ph2== fam11 Val ts Calls Phaem famil Val ts ' 1984 Real No. Reel No. in 1 n = rks Sart 1

90 - 2 ' US+06.3 ID .540 <20 2.1 <20 1.3 612 1 8x1 1 1 .5 NDO 711 501 90 - 56 12-17.0 ID .540 (20 5.0 IDC 612 2 Note 1 8x1 1 1 1.5 NDD 711 501 90 - 56 12-11.0 ID .540 <20 2.5 IDC 612 2 Note 1 8x1 1 I .9 NDD 711 501 +

! 94 - 3 US-0.7/ ID .540 <20/21 2.0/4.0 20/50 .9/2.4 623 1 8x1 Multiple US+06.1 8x1 1/2 1/2 .3/1.2 1/2 1/2 .9/1.9 720 501 Indications 94 - 4 US-00.3 ID .540 38 2.1 36 1.6 623 1 -2 j 8x1 2 1 1.1 1 1 1.4 720 501 103 - 5 US+05.7 ID .540 46 4.4 56 2.9 624 1 +10 Note 2 8x1 1 2 1.6 2 2 2.0 717 501 108 - 107 13-14.9 ID .540 (20 2.9 IDC 614 1 Note 1 8x1 1 1 .6 NDO 712 501

! 108 - 107 13-11.1 ID .540 (20 7.3 IDC 614 1 Note 1 l 8x1 1 1 1.1 1 1 0.7 712 501 108 - 107 13-06.4 ID .540 <20 4.5 IDC 614 i Note 1 ,

8x1 1 1 1.3 NDD 712 501 108 - 114 06-05.9 OD .540 <20 .7 (20 .4 614 1 8x1 1 4 .4 1 4 0.5 712 501 1

109 - 11 US-02.4 ID .540 <20 1.2 (20 1.0 625 1 8x1 1 1 .4 NDO 713 508 i

109 - 11 US-01.6 ID .540 <20 1.4 26 1.0 625 1 8xl NR I 1 0.5 713 508 i 109 - 11 US-00.7 ID .540 <20 1.1 23 .8 625 1 8x1 NR NDD 713 508 109 - 11 TSH+5.4 ID .540 26- 1.4 26 1.2 625 1 0 See Note 2 8x1 1 1 1.1- 508' ,

109 - 112 06+03.3 ID .540 <20 3.3 (20 2.4 614 1 Note 1 8x1 1 <1 .5. I 1 0.6 712 501 1

109 - 112 06+12.7 ID .540 <20 3.5 IDC 614 1 Note 1 i 8x1 1 <1 1.0 3 1 1.0 712 501 l

i I

1465x/qa

0TSG ISI LIST DTSG B ISI LIST TDR 781 REV. I APPEIE)IX III PAGE 40 0F 41 1984 1986 - SM

% (540)  % (540) SM Chan9e Row Tube Location firinin Probe Coils Phase (8x11 Vol ts Calls Phase famil Volts 1984 Reel No. Reel No. in % Remarks Sart 109 - 112 4+00.0 ID .540 23 2.7 23 2.0 614 1 0 See Note 2 8x1 2 1 0.6 501 110 - 84 06-03.9 ID .540 . <20 1.9 IDC 614 1 Note 1-8x1 1 <1 .5 NDD 712 501 114 - 67 01-10.4 ID .540 <20 2.8 IDC 614 1 Note 1 8x1 1 1 .6 NDD 712, 711 501 Reel 711 NDD 118 - 101 11-06.6/ :D .540 <20/<20 1.8/6.1 IDC 614 1 Note 1 12+12.3 8x1 1/1 1/1 .2/.9 3 2 0.6 712 501 121 - 94 13+05.2 DD .540 (20 1.9 <20 .8 614 1 But Nultiple 8x1 1 4 .9 NDU 712 509 Indications 123 - 99 11-06.6 ID .540 (20 1.5 IDC 614 1 Note 1 8x1 1 <1 .3 NDO 712 501 4 123 - 99 11-02.0 ID .540 (20 2.2 IDC 614 1 Note 1 8x1 NDD NDD 712 501 123 - 99 11+02.3 ID .540 <20 1.7 IDC 614 1 Note 1 8x1 1 I .6 NDD 712 501 133 - 85 LS+16.9 ID .540 22 1.6 IDC 686, 697 1 8x1 NDD NDD 712 501 133 - 85 LS+35.2 ID .540 (20 1.5 IDC 686, 697 I 8x1 1 <1 .4 NDD 712 501 134 - 26 15-05.4 OD .540 (20 1.1 (20 1.3 694, 613 1 8x1 1 4 .2 1 4 2.6 711 501 136 - 40 US-06.1 ID .540 21 1.7 23 1.5 695 1 +2 8x1 1 1 .5 1 1 0.6 711 501 143 - 43 15-02.3 ID .540 38 .6 S/N .5 690 I 8x1 1 1 .3 NDD 713 501 i

1 143 - 43 15+07.5 ID .540 28 * .7 S/N .5 690 1 8x1 NDD NDD 713 501 i

i 145 - 43 US-07.2 ID .540 38 .7 S/N .5 690 1 8x1 NDD 1 1 0.8 713 501 148 - 31 03+10.4 ID .540 28 1.5 36 .9 692 1 +8 8x1 1 1 .5 NDD 711 501 1465x/qa

OTSG ISI LIST CTSG B ISI LIST TOR 781 REV. 1 APPD e!X III PAGE 41 0F 41 1984 1986 - SM

% (540)  % (540) SM - Change

_ Row Tube Locati on firiain Probe Calls Phata (Bull Val ts Calls Phase (Bull Vol ts 1984 Reel No. Reel No. in 1 8 - rks Sart 148 - 31 04-12.1 ID .540 37 1.0 NDD 652 1 8x1 NR NDD 711 501 148 - 31 04+12.0 ID .540 (20 1.3 $/N .5 692 1 8xI NR NDD 711 501 148 - 31 07-00.9 ID .540 38 1.9 36 1.2 692 1 -2 8x1 1 1 .4 1 1 0.7 711 501 148 - 31 08+00.0 ID .540 21 1.1 30 .7 692 1 +9 8x1 1 1 .2 NDD 711 501 148 - 31 11+11.5 ID .540 21 .8 S/N .5 692 1 8x1 NR NDD 711 501 148 - 31 12+17.2 ID .540 66 .7 S/N .5 692 1 Px1 NDD NDD 711 501 148 - 31 14-05.1 ID .540 28 1.0 36 .7 692 1 Sul NR NDD 711 501 148 - 31 2+32.8 ID .540 33 1.4 33 0.8 692 1 0 See Note 2 8x1 1 1 0.4 501 148 - 32 09+16.8 ID .540 38 1.1 S/N .8 613 1 8x1 1 1 .2 1 1 0.3 631 501 1

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t 1465x/qa