ML13330B314

1988 Intergranular Attack Assessment

ML13330B314
Person / Time
Site:	San Onofre
Issue date:	05/31/1988
From:	Southern California Edison Co
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ML13330B313	List: ML13330B312 ML13330B314
References
NUDOCS 8805310167
Download: ML13330B314 (24)

Text

1988 INTERGRANULAR ATTACK ASSESSMENT SAN ONOFRE UNIT 1 DOCKET NO. 50-206 MAY 1988 SOUTHERN CALIFORNIA EDISON COMPANY ROSEMEAD, CALIFORNIA 3805310167 880531 PDR ADOCK :.05000206 Q-DCD

TABLE OF CONTENTS Section Page I. Introduction 1

II. San Onofre Unit 1 IGA Discussion 2

III.

SG-B Tube R26C21 Assessment 4

IV. SG-C Tube R33C76 Assessment 5

V. SG-B 47 Tube Degradation Assessment 6

VI.

Summary/Conclusion 7

VII.

References 8

I.

Introduction On February 12, 1988, San Onofre Unit 1 began the second mid-cycle maintenance and surveillance outage of the current fuel cycle. As part of this outage, the steam generator tubing was inspected in accordance with the San Onofre Unit 1 Technical Specification 4.16, "Inservice Inspection of Steam Generator Tubing." In addition to the Technical Specification inspection, other areas were inspected to provide supplemental information to assess the condition of the steam generators. The results of this inspection were transmitted to the NRC by Reference 1.

The purpose of this report is to provide the additional information requested in Reference 2. Specifically, Reference 1 indicated that two tubes had IGA indications (less than the 50% plugging limit), but did not provide the actual percent through wall values. Reference 2 requested a more comprehensive discussion of San Onofre Unit 1 intergranular attack (IGA) so that the NRC may understand the basis for the conclusion that IGA is not progressing at San Onofre Unit 1.

Section II of this report contains a comprehensive discussion of IGA at San Onofre Unit 1.Section III of this report contains the assessment of steam generator "B" (SG-B) tube R26C21 regarding IGA.Section IV contains the assessment of steam generator "C" (SG-C) tube R33C76 regarding IGA.Section V of this report provides the results of an assessment of apparent degradation in 47 SG-B tubes.Section VI summarizes the conclusions and Section VII provides a listing of the references used in this report.

II. San Onofre Unit 1 IGA Discussion During the 1980-81 sleeving repair project, it was established that IGA had.occurred at the top of the tubesheet near the inlet end (hot leg) of the tubing in all three San Onofre Unit 1 steam generators. The regions of aggressive attack were identified by eddy current testing and were corroborated by metallurgical. examination of tube samples removed from the steam generators (pulled tubes).

Using this eddy current test data and results of metallurgical examinations of pulled tubes to identify the active regions of IGA within each steam generator, boundaries were formulated which encompassed these regions, and all tubes within the boundary for each steam generator were sleeved. The regions outside the sleeving boundary were not sleeved because analysis of eddy current data collected during the sleeving project yielded no quantifiable indications of IGA at the top of the tubesheet.

The tubes immediately surrounding the sleeving boundary and a percentage of the remaining peripheral, non-sleeved tubes have been inspected during each steam generator Technical Specification inservice inspection, to assess if IGA is progressing outward from the sleeving boundary. To perform this assessment in the best manner possible and due to advances in technology, each successive inspection has utilized either improved data acquisition equipment or data analysis techniques.

In 1985, a reevaluation of the IGA degradation rate established in 1981 was conducted (Reference 3).

This reevaluation concluded that eddy current testing with a conventional bobbin coil can be used to detect IGA, as found at San Onofre Unit 1, at levels in excess of 20% through wall penetration, and that the IGA progression rate was no more than 10%

through wall per 15 effective full power months.

During the 1988 steam generator inservice inspection, 100% of the non-sleeved tubes in each steam generator were inspected from the hot leg tube end to the first hot leg tube support. The IGA inspection techniques established in Reference 3 and incorporated into the San Onofre Unit 1 Steam Generator Eddy Current Data Interpretation Guide were utilized and any "IGA-like" indication at or above the top of the tubesheet was called out and subsequently inspected with a motorized rotating pancake coil (MRPC) probe. In addition, 47 non-sleeved tubes in SG-B were also inspected with the MRPC probe in response to Reference 4, which required that they be evaluated to determine the nature of the apparent new degradation identified above the top of the hot.leg tubesheet in 1985.

The results of this inspection identified only two tubes with IGA indications, R26C21 in SG-B and R33C76 in SG-C. These two tubes are discussed in Sections III and IV of this report, respectively. In addition, the assessment to determine the nature of the degradation of the 47 tubes in SG-B is discussed in Section V.

III.

SG-B Tube R26C21 Assessment Tube R26C21 in SG-B was inspected with a bobbin coil probe in 1980, 1985 and 1988. The 100 KHz absolute eddy current signals (Appendix A) from each of these inspections were reviewed and no "IGA-like" signal or any other indication was identified. Therefore, based on the assessment methodology of Reference 3, there is no IGA greater than 20% through wall in tube R26C21.

This tube is within two tubes of the sleeving boundary, and therefore, it was tested with an 8x1 probe in 1985. Reevaluation of the 8x1 data (Appendix A) shows a defect indication on coils 2 and 6, and based on the IGA plugging criteria in use at the time, this tube should have been plugged in 1985. It was not plugged, but as established in the report of results from the 1988 inspection (Reference 2), the plugging criteria for "IGA-like" indications was raised to 50% through wall. As identified above, this "IGA-like" indication was less than 20% through wall, and therefore, it presented no significant safety hazard.

In 1988, this indication was tested with the MRPC probe. The results (Appendix A) confirmed that an 'llGA-like" signal was present at the top of the tubesheet. Because there was no confirmation from the bobbin coil 100 KHz absolute signal, it was considered to be less than 20%

through wall.

Although this tube was not required to be plugged, it was removed from service as a preventive measure.

IV. SG-C Tube R33C76 Assessment Tube R33C76 in SG-C was last inspected in 1980 during the 100%

inspection of the hot leg tubing. Reevaluation of the 100 KHz absolute bobbin coil signal (Appendix B) from this inspection and evaluation of the 1988 bobbin coil results show no "IGA-like" indication or any other indication. Therefore, based on the assessment methodology of Reference 3, there is no IGA greater than 20% through wall in tube R33C76.

When tested in 1988, a dent at the top of the tubesheet was called in tube R33C76. It was identified as having a possible indication, and therefore this tube was tested with the MRPC probe. The MRPC results (Appendix B) identified an "IGA-like" indication was present at the top of the tubesheet, and due to the lack of confirmation from the bobbin coil 100 KHz absolute signal, it was considered to be less than 20%

through wall.

This tube was not required to be plugged but was removed from service by mechanical plugging as a preventive measure.

V.

SG-B 47 Tube Degradation Assessment In 1985, 417 tubes were inspected in SG-B as part of a License Condition 3.E steam generator inspection. The results of this inspection were provided to the NRC in Reference 5.

The results obtained from the 417 tubes were compared to corresponding historical data and 47 tubes were identified to have apparent new degradation above the top of the tubesheet. To identify if the degradation was new or due to improved detection capabilities, the 1985 results were compared to the 1980 results using the DDA-4 to provide consistent results.

This comparison identified only 12 tubes with new greater than 20%

indications, and only 2 of these tubes had no previous detectable defect. In addition, the calculated mean growth for the 47 tubes was

-1.1%.

These results led to the conclusion that limited degradation was occurring above the hot leg tubesheet in the San Onofre Unit 1 steam generators and that no special inspections were necessary. However, the NRC, in Reference 4, concluded that more information was required and recommended that some destructive examination be performed at the next refueling outage to determine the exact nature of the degradation in the 47 tubes identified above.

During the current outage, these 47 tubes were inspected with the best available nondestructive examination method, the MRPC probe, to determine the nature of the degradation. The results of this inspection identified no IGA or any other abnormal indications in these tubes, above the top of the tubesheet. Based on these results, it was concluded that there was no active corrosion IGA.in these 47 tubes.

Therefore, no destructive examination is planned for these,47 tubes.

VI.

Summary/Conclusion The two tubes with "IGA-like" indications were plugged as a preventive measure. Assessment of the 100 KHz absolute channel eddy current data and the MRPC data indicate that the "IGA-like" indications are less than 20% through wall.

No other "IGA-like" indications were identified in the 3912 hot leg non-sleeved tubes inspected during the current outage. The two IGA indications that were found, were compared with previous results and no change was identified since 1980. Based on these results, it was.

concluded that IGA is not progressing at San Onofre.

The 47 tubes in SG-B which had apparent new degradation in 1985 were inspected with both the bobbin coil and the MRPC in 1988. The results of this inspection identified no IGA or any other abnormal indications in these tubes above the top of the tubesheet. Therefore, it is concluded that there is no active corrosion in these tubes, and no destructive examination is planned.

VII.

References Letter, M. 0. Medford (SCE) to U. S. Nuclear Regulatory Commission, "Steam*Generator Inspections," dated March 25, 1988

2. Letter, Charles M. Trammell (NRC) to Kenneth P. Baskin (SCE),

"Steam Generator Inspection Report - San Onofre Unit No. 1," dated April 15, 1988

3. Letter, M. 0. Medford (SCE) to 3. A. Zwolinski (NRC), "Steam Generator Inspections," dated March 19, 1985, with Enclosure, "1985 Reevaluation of Steam Generator Inspection Interval, March 1985"

4. Letter, Richard F. Dudley (NRC) to Kenneth P. Baskin (SCE), "Review of License Condition Steam Generator Inspection Report," dated June 27, 1986

5. Letter, M. 0. Medford (SCE) to G. E. Lear (NRC), "License Condition Steam Generator Inspection Report," dated March 10, 1986 LAB:9601F Appendix A SG-B Tube R26C21 Eddy Current Results

-CH M 1 VERT+ -CH 4 VERT +

CHANNEL NO -- MIX* 1 SO B ROW 26 COL 21 X" DISPLAY CHAN --

M I

.CHANS 1-2 SPAN ----- 100 ROTATION -

355 DEG LEFT STRIP CHART CHAN*

-- M IV CHANS --

1-2 SPAN ----- 100 ROTATION -

355 DEG RIGHT STRIP CHART CHAN# --

4V FREQ ----

100 kHz SPAN ------ 32 6.21 VOLTS 18a jd DNT ROTATION -

346 DEG TSH

+

0.0 SYSTEM CONFIGURATION NAME--18SN1 of CHAN-4 30 PLANT UNIT* S/G LEG DATE SAN ONOFRE REEL 2 1

9 INLET 06/94'8I CIO

-CH M 1 VERT+ - CH 4 VERT +

CHANNEL NO

-- 4 SO B ROW 26 COL 21 XY DISPLAY CHAN*-

4

-*FREQ 100 kHz SPAN 32 ROTATION -

346 DEG LEFT STRIP CHART CHAN*

M 1V CHANS --

1-2 SPAN -----

100 ROTATION -

355 DEG RIGHT STRIP CHART CHAH# --

4V FREQ ----

100 kHz VSPAN 32 0.8 VOLTS 139 ROTATION -

346 DEG TSH

+

0 00 SYSTEM CONFIGURATION NAME --

19OSONGS1

• of CHAN-4 1001 1 1 1 m

1.

30 PLANT UNIT* S/G LEG DATE SAN ONOFRE REEL 2 1

a INLET 06/04/90

-CH M I VERT+- CH 6 VERT CHANNEL NO -MIX*1 ID B ROW 26 COL 21 XY DISPLAY CHAI0 -- M I CHANS --

3-5 SPAN -----

8s ROTATION -

358 DEG S...............

LEFT STRIP CHART CHANO -- M lV CHANS -

3-5 SPAN -----

86 ROTATION -

358 DEG RIGHT STRIP CHART CHA*

6V FREQ -----

100 kHz SPAN ------

160 S.77 VOLTS 186 D DNT ROTATION -

382 DEG TSH

+

0.0 SYSTEM CONFIGURATION NAME -- 80881N

• o f CHAN-8 9:42t45 AlM DECEMBER 14 1985 403T 340 4

1006 1

20 PLAHT UNIT S/G LEG DATE BLK 39377 SONGS DISK HOS I

B HOT 12/13/865

-CH M 1 VERT+-

CH 6 VERT CHANNEL NO-6 ID 8 ROW 26 COL 21 XY DISPLAY CHAN*

6 FREG 18 kHz SPAN ----- 328 ROTATION -

302 DEG LEFT STRIP CHART CHAN*

-- M 1V CHANS --

3-5 SPAN -----

o8 ROTATION -

358 DEG RIGHT STRIP CHART CHAN*

6Y FREG -----

100 kHz SPAN -----

320 TSH

+

.0o ROTATION -

302 DEG SYSTEM CONFIOURATION NANE --

BOSBIN

• of CHAN-8 9s42s45 AM DECEMBER 14 1985 CIL' FEQ 1 4

7 400 1

2

40 1o 78 PLANT UNIT S/0 LEO DATE SONGS DISK HOS 1

B HOT 12/13'85

CH M 1 VERT+ -

CH 6 VERT +

CHANNEL NO --

MIX* I ID 20 ROW 26 COL 21 XY DISPLAY CHAN# -- M I CHANS --

3-5 SPAN ------ so ROTATION -

281 DEG LEFT STRIP CHART CHANS --

3-5 SPAN -----

80 ROTATION -

281 DEG RIGHT STRIP CHART CHAN* --

6V FREQ ----- 100 kHz SPAN ----- 275 5.73 VOLTS 184 ONT ROTATION -

289 DEG TSH

+

0.0 SYSTEM CONFIGURATION NAME --

BOBBIN of CHAN-8 11:l5:47 PM FEBRUARY 29 1988 OIL

-H60 1

6 NFREQ L--

10 k

56z 00 1

10 7 8

10 PLAPT UNIT S/G LEG DATE BLK 14939 SONGS DISK 802.1 01

.B" IN4LET 0/98 CH M 1 VERT+ - CH 6 V ERT +

CH 4EL NO --

6 10 20 ROML 26 COL 21 XDISPLAY CHANi --

6 FREQ 100 kHz SPAN 275 ROTATION -

289 DEG LEFT STRIP CHART CHANS --

3-5 SPAN 88 ROTATION -

281 DEG RIGHT STRIP CHART CHAN* --

6Y FREQ -----

100 kHz SPAN ----- 275 TSH

+

.0 ROTATION -

289 DEC SYSTEM CONFIGURATION NAMIE --

BOBBIN

• of CHAN-8 11315o47 PH FEBRUARY 29 1988

.......- b61O I2 340 3 4

1005 10

=7 8

10 PLANT UNIT S/G LEG DATE SONGS DISK 802.1

• 1

.B" INLET 02/29'88

-CH 15 VERT + -CH 13 VERT +

CHANNEL NO -- 5 10 8 ROW 26 COL 21 XY DISPLAY CHAN* --

5 FREQ ----- 300 kHz SPAN -----

160 ROTATION -

329 DEG LEFT STRIP CHART CHAN*

15V FREQ ----- 180 kHz SPAN ----

160 ROTATION -

129 DEG RIGHT STRIP CHART CHANM --

13V FREQ -----

100 kHz SPAN -----

160 5.11 VOLTS 140 im OS ROTATION -

129 DEG TSH

+

0.0 SYSTEM CONFIGURATION NAME -- 81

• of CHAN-16

-A COIL*

300 6

7 8

0-11 100 3

4 5

6 15 PLANT UNIT S/0 LEG DATE BLK 21690 SONGS DISKH6 1

8 INLET 12/14z85

-CH 15 YERT +- CH 13 VERT CHANNEL NO-7 1D B ROW 26 COL 21 XY DISPLAY CHAH*

7 FREQ ---

300 kHz SPAN -----

160 ROTATION -

329 DEG LEFT STRIP CHART CHAN* --

15V FREQ ----- 100 kHz SPAN ----- 160 ROTATION -

129 DEG RIGHT STRIP CHART CHAN* -- 13V FRED ----- 100 kHz SPAN -----

168 6.18 VOLTS 141 j D OS ROTATION -

129 DEG TSH

+

0 SYSTEM CONFIGURATION NAM4E --

8X1

• of CHAN-16 100 2

15 PLANT UNIT S/0 LEG DATE SONGS DISKH86 1

8 INLET 12/14/85

CH 15 VERT + -

CH 13 VERT +

CHANNEL HO 13 ID 8 ROW 26 COL 21 XY DISPLAY CHAN* --

13 FREQ ----- 100 kHz SPAN -----

160 ROTATION -

129 DEG LEFT STRIP CHART CHAHe 15V FREQ ----- 109 kHz SPAN ----- 160 ROTATION -

129 DEG RIGHT STRIP CHART CHAN* --

13V FREQ -----

-10 kHz SPAN -----

160 5.07 VOLTS 115 E OS ROTATION -

129 DEG TSH

+

0.0 SYSTEM CONFIOURATION HAME --

8XI

• of CHAN-16 COIL*

FREQ- -5617 8 SA6 11 1603 1 RO0ATO 5 6

71 9 E00 100 9k iROATIN ;4 151 DE 15 PLANT UNIT S/S LEG DATE SONGS DISKHO6 a

INLET 12/14/85

-CH 15 VERT + -CH 13 YERT +

CHANNEL HO --

15 ID B ROW4 26 COL.21 XY DISPLAY CHAN* -- 15 FREQ ----- 100 kHz SPAN ----

160

.VT 1D ROTATION -

129 DEG LEFT STRIP CHART CHAN* -

15V FREQ ---

I 10S kHz ONGS...

1.

SPAN -----

150 ROTATION -

129 DEG RIGHT STRIP CHART CHAN* --

13V FREQ ----- 100 kHz SPAN ----- 160 7.11 YOLTS 114 id DS ROTATION -

129 DEG TSH

+

0.0 SYSTEM CONFIGURATION T

NAME --

8X1

1. of CHAN-16 CL 300e 1 S

4 300 5

6 7

10 CI 0

1 2

15 PLAN4T UNI1T S/G LEG DATE SONGS DISKHOS 1

.8 INLET 12/14/85

CH 15 VERT + -

CH 13 VERT +

CHANNEL NO --

NIX* 2 10 8 ROW 26 COL 21 XY DISPLAY CHAN* -- M 2 CHANS --

5-13 SPAN -----

80 ROTATION -

334 DEG LEFT STRIP CHART CHAN*

15V FREQ ----- 100 kHz SPAN ----- 168 ROTATION -

129 DEG RIGHT STRIP CHART CHAN# --

13V FREQ 108 kHz SPAN -----

168 6.33 VOLTS 121 D

DS ROTATION -

129 DEG TSH

+

0.1 SYSTEM CONFIGURATION NAME --

8X1

• of CHAN-16 FREO 2 3 4 5 67 8 3001 3

4 SOU 1--

7 8

lea 5

6 15 PLANT UNIT S/G LEG DATE SONGS DISKH46 1

8 INLET 12/14"95

-CH 15 VERT.+ -

CH 13 VERT+

CHANNEL NO -- MIXi 6 1D B ROW 26 COL 21 XY DISPLAY CHAN* -- M 6 CHANS --

7-15 SPAN ----

88 ROTATION -

334 DEG LEFT STRIP CHART CHAN* -

15V FREQ ----

100 kHz SPAN -----

168 ROTATION -

129 DEG RIGHT STRIP CHART CHAN* --

13V FREQ ----- 100 kHz SPAN -----

160 7.82 VOLTS 118 s

D ROTATION -

129 DEG TSH

+

0.0 SYSTEM CONFIGURATION NAME -- 8X1

• of CHAN-16 COI L I

FREQ 11214 51617 8 300 411 300 5

G 7

c10 3

6 15 PLANT UNIT S/G LEG DATE SONGS DISKH86 1

B INLET 12/14/85

.0 DISPLAY *

-2 TSH rd.

IDSB ROW, 26 COL 21 1

23 4

a CH-V H*1i1V CHO-11V CHIO-12V CH4-3vI CH*-14 I CH*?1S CH*-l V 15 PLA14T UNIT S/G LEG DATE BLI( 21690 SONGS OISKHOG 1

B INLET

.12/14/85 DISPLAY *

-3 TSH

+

0.0 I'D a ROW. 26 COL 21 I

a C3 H 4.

CH 5 5V C*6 6V C*7m COe8v CH*-MIVT CH*-N2V H*-M3V CH-M4V CH-M5 CH-MV H-V C*-8 15 PLANT UNIT S/0 LEG DATE BLK 21690 SONGS DISKH86 1

a IN4LET 12/14/85

-Cai I VERT.

CHANNEL NO --

[SO 20 OW 26. CO 2 FREG -

340 ktZ ROTATION

-251 DEG

-0..74 0 +0.74 MAX YULTS

6.

Z ROMRI0O4 9

X ROTATION

?1 OF SCANS 31 39 pLANT 1141T S/G LEO DATE L 95 S O G S D I K 1. 1

• 1 B ".

IL E T.

0 3 / m / 9 8i~

9 CH Pf1 VET4 tNNELNO MXG IMCI RO.2 COL 21 ROTAION -

259 CEO

-0.74 a

O 40.74 MM 'O.Ts 4.6 E2NPLLL/ROT 1.62 Z ROTATION P-86 X ROMAIZON 71 TSH

.00 OINscm oil s

KofNT UNIT 9

LED W

OATE9U 9599 SONGS DISK 810. 1

@1

-B-INLET 891.9S

Appendix B SG-C Tube R33C76 Eddy Current Results

CH M 1 VERT+- CH 6 VERT +

CHANN*EL NO-- MIX* 1 SO 30 ROW 33 COL 76 XY DISPLAY CHN* -- 11 1 CHANS --

3-5 SPAN -----

26 ROTATION -

283 DEG LEFT STRIP CHART CHAN* -- H IV CHANS --

3-5 SPAN -----

26 ROTATION -

283 DEG RIGHT STRIP CHART CHAN* --

6V FREQ -----

10 kHz SPAN 203 4.48 VOLTS 185 g

DNT ROTATION -

288 DEG TSH

+

0.0 SYSTEM CONFIGURATION SAME -- BOBBIN of CHAN-8 FBUR 2

18 F E URE Y 3 4 5 6 7 60FREQ 121 210 z

0 06 R O.A T.O....2 8 8 D E G 6

10 71 1

81 L

PLANT UNIT S/G LEG DATE SRBLK 21276 SONGS DISC 04.1

• 1 C

INLET 02/23/89

-CH M 1 VERT+ - CH 6 VERT +

CHANNEL NO -

6 SG SO ROW 33 COL 76 1

I XY DISPLAY CHAN* --

6 FREQ ---

100 kHz SPAN ----- 203 ROTATION -

288 DEG LEFT STRIP CHART CHAN* -- M 1V CHANS --

3-5 SPAN -----

26 T................

L ROTATION -

283 DEG RIGHT STRIP CHART CHAN*

NV FREQ 100 kHzZ SPAHN--

203 TSH

+

0.0 ROTATION -

288 DEG SYSTEM CONFIGURATION NAME --

BOBBIN

1. of CHAN-8 10 4 53 M

145t53 All FEBRUARY 23 1988 3 14-5 1RE7I 100 1

PLANT UNIT S/G LEG DATE SONGS DISC 04.1

1. 1 C

INLET 02/23/88

CH M IVERT+-CH 4 VERT +

CHP144EL N

-4 SGOC ROW 2 3 COL 76 XYDISPLAY CHAN*

4 FREQ -------10 kHz SPAN --

B ROTATION -346 DEG LEFT STRIP CHART ER~;-Z m IV CHANS --

1-2 WPAN--

5 ROTATION -

355 DEG RIGHTSTRIP CHART CHAN* --

4V FREO -------100 kHz SPAN--

B ROTATION -

346 DEC TSH

+

0.0 SYSTEM CONF IGURATI ON NAME --

ISOSONGS1

• cf CHAN-4 67 FREO 2345 7

340 ?

________________________100 30 PLANT UN IT* S/G LEG DATE SAN ONOFRE REEL 12 1

C INLET 05/29/90

-CH M I VERT+ -

CH 4 VERT+

CHANNEL NO -- MIX* 1 SO C ROW 33 COL 76 XY DISPLAY CHAN* -- M I CHANS --

1-2 SPAN -----

50 ROTATION -

355 DEG LEFT STRIP CHART CHAN*

-- M1 LY CHANS --

1-2 SPAN -----

50 ROTATION -

355 0E RIGHT STRIP CHART CHAN# --

4Y FREQ ----

100 kHz SPAN -----

80 1.23 YOLTS 119 2 2 ROTATION -

346 DEG TSH

+

0.0 SYSTEM CONFIGURATION NAME --

1980SONGS1

• of CHAN-4 FREQ 12 3 45 67 8 I0 30 PLANT UNIT* S/G LEG DATE SAN ONOFRE REEL 12 1

C INLET 05/28/80

-CH M 1 VERT+ -

CH 4 VERT CHANNEL NO

-- 1 SO C ROW 33 COL 76 XY DISPLAY CHAN#-- I FREQ ---

400 kHz SPAN----

88 ROTATION -

358 DEG LEFT STRIP CHART CHAN* -- M 1Y CHANS --

1-2 SPAN -----

50 ROTATION -

355 DEG RIGHT STRIP CHART CHAN* --

4Y FREQ -----

100 kHz SPAN -----

80 TI 0e ROTATION -

346 DEG SYSTEM CONFIGURATION NAME --

1980SONOS1

• of CHAN-4 00 100 12 4

30 PLANT UNIT* S/O LEG DATE SAN ONOFRE REEL 12 1

C INLET 05/28/90

CH I VERT

-CH 2vr VET4 CHA4HIIaNO1 D38RM s COL 7

Mm-a FREQ 16 kHz SPN IGO ROTATION -

14S DM5 LEFT STRIP OH~lr CA*-

1V 0

F 3408kHz OTIATN 22DE RIGHT STRIP C1FIRT CH" 2V FREG -

208 kI~z GPM 12

5. 29 VOLTS 42

-rU ROTATION -

M6 DEG SYSTEM CCW'IGURMION 0 cif CHAW-4

_will-I CHANEL O -

-[OTNTRON S

CO 6 40.6:,

360 x9S PLOT MITSi; LG AT PUL.-,R 43GI scum9 PRI-4117 as I

c INL.ET

~

58