ML20153G437

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Summarizes Inservice Insp of Steam Generator Tubes Completed on 880525.Results of Inservice Insp,Including List of Eddy Current Testing Indications & List of Tubes Plugged After Completion of Insp Encl
ML20153G437
Person / Time
Site: San Onofre Southern California Edison icon.png
Issue date: 08/26/1988
From: Morgan H
SOUTHERN CALIFORNIA EDISON CO.
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8809080156
Download: ML20153G437 (27)
v • d • e


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, Southern California Ed/ son Company SAN ONorRE UUCLEAR GENERATING STATKN e.o. sox: e SAN CLEMENTE. CAurcqNIA 92672 S A f @N W AG A (7 44 4 8 August 26, 1988 U. S. Nuclear Regulatory Commission Document Control Desk

) Washington, D. C. 20555 i

Subject:

Docket No. 50-362 l' Special Report Inservice Inspection of Steam Generator Tubes San Onofre Nuclear Generating Station, Unit 3

Reference:

Letter from H. O. Medford (SCE) to Mr. G. W. v ighton n (USNRC) dated April 5, 1985 Pursuant to Surveillance Requirement 4.4.4.5(b) of Appendix A, Technical Specifications to Facility Operating License NPF-15, this report is being submitted to the Commission following the completion of inser.>1ce inspection of j steam generator tubes at San Onofre Unit 3.

Eddy current inspection of the steam generator tribing was completed on i Hay 25, 1988. A total of 2151 tubes j generators were inspected full length (and 177 tubes were removed from service j mechanical plugging.

l In Steam Generator E-088, 959 tubes were inspected. Two tubes found to be

, defective due to the wear mechanism previously described in the reference were plugged. Therefore, as provided for in Technical Specific 4 tion 4.4.4.2, a C2 program expansion was performed. Seventy-five tubes were preventively plugged due to the wear mechanism previously der.cribed in the reference.

In Steam Generator E 089, 1192 tubes were inspected. Four tubes found to be defective due to the wear mechanism previously described in the reference were plugged. Therefore, as provided for in Technical Specification 4.4.4.2, a C 2 program expansion was :erformed. Ninety six tubes were preventively plugged due to the wear mechanism previously described in the reference, koh eso9080((k$$$$$b62 POR AD PDC gg 9

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i Document Control Oesk As reouired by Surveillance Requirement 4.4.4.5(b), complete results of the recently completed inservice inspection of steam generator tubing are provided in the enclosures. Enclosure 1 provides the steam generator internal location 1 reference guide. The eddy current indication locations listed in the remaining

enciesures are based upon this guide. Enclosures 2 and 4 provide a list of eddy
current testing indications, including tube identification, indication depth, and 1 the axial location of the indication in the tube. Enclosures 3 and 5 provido a list of tubes plugged after completion of the inservice inspection.

If you require any additional information, please so advise.

4 Sincerely,  !

MbM -

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4 Enclowres: 1 Combustion Engineering Model 3410 3 team Generator Tube Support  !

j Drawing and Clarification of Tubing / Support Interfaces  ;

r r l 2 List of Eddy Current Indications, Steam Generator E-088 ,

3 List of Tubos Plugged, Steam Generator E-088  ;

4 List of Eddy Current Indications, 5 team Generator E-089 5 List of Tubes Plugged. Steam Generator E 089

! cc: J. B. Martin (Regional Administrator, USNRC Region V)

j F. R. Huey (USNRC Senior Rasident Inspector, Units 1, 2, and 3)

.j H. Rood (Project Manager, SONGS 2/3, USNRC, NRR) 1 Institute of Nuclear Power Operations (INPO) ,

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6 Page 1 Of 2 Enclosure 1 CE MODEL 3410 TUBE SUPPORT DRAWING VH2 VSM VC2 VH1 VH3 VC3 VC1 I i i  ! -

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09H 09C a ,

I 30 78' 04H OSC

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Page 2 of 2 Enclosure 1 CLARIFICATION OF TUBING /SUPPOR1 INTERFACES AB0VE THE 7TH FULL EGGCRATE SUPPORT R0WfS) TUBING / SUPPORT INTERFACES -

i 120-147 08H.09H.10H.DBH.VHl.VH2.VH3.VSM.VC3.VC2.VC1.DBC.100.09C.08C ,

115-119 08H.09H DBH.VHl.VH2.VH3.VSM.VC3.VC2.VC1.DBC 09C.08C 84-114 08H.09H DBH VH2.VH3.VSM.VC3.VC2 DBC __09C.08C 83 08H DBH VH2.VH3.VSM.VC3.VC2 DBC 08C -

i 51-52 08H DBH VH3.VSM.VC3 DBC 08C  !

49-50 08H DBH VSM DBC 08C l

19-48 DBH VSM DBC 1-18 DBH DBC j h

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Page 1 of 5 Enclosure 2 LIST OF ED0Y CURRENT INDICATIONS '

San Dnofre Unit 3 Steam Generator E-088 gg Column Indicationf% throuah-wall) location 43 81 78 DBH+1.4 45 81 49 DBH&1.4 46 88 43 D8C+1.5 1

44 94 38 DBH+1.9 l

43 95 38 DBH41.7 43 97 38 DDH+1.7 ,

1 46 84 35 DBC-1.5  !

) 47 85 32 DBH+1.7 l! 49 85 32 DBH-1.7 i

50 98 32 DBH-2.0 i 37 75 30 DBH+1.7 ,

45 93 30 DBH+1.7 l 47 83 29 D8C+1.4 ,

e <

47 91 29 DBH-1.7 j 37 75 28 VSM+0.9 42 80 28 DBC+1.5 ,

o 1 45 93 28 D8H-1.8 ,

t 37 73 27 VSM+0.9 47 89 27 D6H+2.0 32 72 26 DBH-2.0 40 76 26 DBH 1.7 45 83 26 DBC+1.6 l l 48 88 25 DBC+1.5 43 97 25 DBC+1.5 l

45 17 24 DBC+1.7 l

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Paca 2 of 5 1

Enclosure 2 LIST OF EODY CURRENT INDICATIONS San Onofre Unit 3 Steam Generator E-088 EcW Column Indicationf% thrcuch-wall! Locatiou 94 54 24 VH2+4.6  :

138 90 23 01C+12.0 2

45 93 23 D8C+1.3 45 95 23 D8H+1.7 39 99 23 D8H 1.7 127 129 22 TSC+7.8 i

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~

45 97 22 D8H+2.0 49 91 22 08H-1.7 55 91 22 05H+10.7 i

104 80 22 07H+24.3

38 76 21 DBH-1.8 47 89 21 DBC+1.7 ,

r 128 98 21 OlH+24.3 36 102 21 VSM-0.0 50 90 20 08H 1.7 ,

48 72 20 VSM 0.8 14 16 <20 02C+10.1 i 21 19 <20 02C+7.2 2 38 <20 03C+3.5 27 45 <20 03H ll.3 2 48 <20 04H 5.0  !

122 56 <20 VHl+8.2 4

47 57 <20 07C-1.4 20 68 <20 DBC-1.5 43 69 <20 VSM 0.8

Page 3 of 5 Enclosure 2 j t LIST OF EDDY CURRENT INDICATIONS San Onofre Unit 3 Steam Generator E-088 Em {,gljaQ Indicationf% throuah wall) Location r 123 69 <20 02H+12.2 [

i 36 70 (20 01C+3.9  !

33 '71 <20 ,

DBH-1.6 ,

l 4

40 72 <20 .V W 1.0 ,

i i 39 73 <20 V W 1.0 r 35 15 <20 08H+1.9 f

37 75 <20 D8H-1.8  !

36 76 <20 D8H-1.9 41 77 <20 V W 0.6 j 43 77 <20 D8H-1.5 L i 42 78 <20 08H-2.0  :

L 43 79 <20 D8H-1.7 l l t 49 79 <20 08C-1.6  !

42 80 <20 DBH-1.7 .

44 80 <20 D8H-1.6 l 1 45 81 <20 VW0.6- i l  !

47 81 <20 08H+1.5 i

. 147 81 <20 D8C+1.2

i 44 82 <20 V W 0.8 b

46 82 <20 V W O.8 I

! 50 82 <20 08H-1.4 i

j 47 83 <20 V W 0.9

50 84 <20 D8H-1.3 50 84 <20 D8C-1.1

.! 51 85 <20 03C+18.6

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Page 4 of 5 Enclosure 2 LIST OF ED0Y CURRENT INDICATIONS San Onofre Unit 3 Steam Generator E-088 B3 Column Indicationf% throuah-wall) location ,

52 86 <20 DBH 1.7 ,

46 90 <20 DBC-1.8 t 56 90 <20 DBH 1.7 125 91 <20 03H+3.5 46 92 <20 DBH+1.7 50 92 <20 DBH 1.7

]

i 45 93 <20 DBC-1.5  :

61 93 <20 04C+23.7 46 94 <20 DBH+1.9  :

I i 46 94 <20 DBC+1.5 ,

45 95 <20 08C+1.4 i 47 95 <20 DBH+1.6

} ,

), 49 95 <20 DBH 1.6

! 41 97 <20 DBH 1.9 41 97 <20 DBC+1.9

} 4) 97 <20 DBC-1,3 44 98 <20 VSM 0.7,  !

46 98 <20 DBC+1.9

48 98 <20 DBH-2.0 41 99 <20 DBH 2.0 41 99 <20 DBC+1.6 43 99 <20 DBC-1.5 i i

47 99 <20 DBC+1.9 l 107 99 <20 VC3+0.8 38 100 <20 DBH-1.7 l i

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_ =__ _

Page 5 of 5 Enclosure 2 1

LIST OF EDDY CURRENT INDICATIDNS

! San Onofre Unit 3 Steam Generator E-088 Ray Column Indicationf% throuah-wall) location 42 100 <20 DBH-1.9 37 101 <20 D8C-1.9 40 102 <20 DBH 2.0

43 103 <20 06C+3.7 32 104 <20 DBH-1.7 -

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46 114 <20 TSC+12.3 80 126 <20 VH3+0.8 l 80 126 <20 VC3+0.8  ;

1 98 152 <20 02C+22.6 1 .

] 5 159 <20 03H+10.4 i 23 167 <20 05H+16.2 1 l 47 95 <20 DBC-1.8 I i i

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Page 1 of 4 Enclosure 3 LIST OF TUBES PLUGGED San Onofre Unit 3 Steam Generator E-088 Rpg Column Reason  ;

43 81 78% Indication at Location MH+1.4 45 81 49% Indication at Location DBi+1.4 20 68 Preventive Maintenance  ;

i 4

35 75 Preventive Maintenance {

40 76 Preventive Maintenance

~0 78 Preventive Maintenance 1 79 Preventive Maintenance

, 48 82 Preventive Maintenance  !

[

1 46 84 Preventive Maintenance  !

i 49 85 Preventive Maintenance l 47 89 Preventive Maintenance  ;

i 47 91 Preventive Maintenance l 50 92 Preventive Maintenance i 48 94 Preventive Maintenance l

.l 1 49 95 Preventive Ma',ntenance '

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45 97 Preventive Maintenance 50 98 Preventive Maintenance 47 99 Preventive Maintenance j 42 100 Preventive Maintenance l 36 102 Preventive Maintenance 49 89 Preventive Maintenance l 31 71 Preventive Maintenance 37 75 Preventive Maintenance l 39 77 Preventive Maintenance l

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Page 2 of 4 Enclosure 3 LIST OF TUBES PLUGGED San Onofre Unit 3 Steam Generator E-088 i

Roy Column Reason  ;

42 78 Preventive Maintenance 42 80 Preventive Maintenance 47 81 Preventive Maintenance 50 82 Preventive Maintenance 48 84 Preventive Maintenance .

L 52 86 Preventive Maintenance  !

46 90 Preventive Maintenanca  !

j 49 91 Preventive Maintenance 46 93 Preventive Maintenance 43 95 Preventive Maintenance ,

44 96 Preventive Maintenance l 44 98 Preventive liaintenance [

39 99 Preventive Maintenance

36 100 Preventive Maintenance 37 101 Preventive Maintenance i 38 102 Preventive Matt.wiance {

1 33 71 Preventive Maintenance 36 76 Preventive Maintenance l

] 41 77 Preventive Maintenance 41 79 Preventive Mtintenance '

i 44 80 Preventive Maintenance 44 82 Preventive Maintenance 45 83 Preventive Maintenance

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Enclosure 3 LIST OF TUBES PLUGGED San Onofre Unit 3 Steam Generator E-088 r

Rg Column Reason 50 84 Preventive Maintenance l 46 88 Preventive Maintenance 50 9f, Preventive haintenance 46 92 Preventive Maintenance 44 94 Preventive Maintenance  !

45 95 Preventive Maintenance 41 97 Preventive Maintenance l 46 98 Preventive Maintenance 41 99 Preventive Maintenance {

t 38 100 Preventive Maintenance 39 101 Preventive Maintenance l

40 102 Preventive Maintenance l

32 . Preventive Maintenance  ;

i l i 38 76 Preventive Maintenance  ;

43 77 Preventive Maintenance  !

43 79 Preventive Maintenance 46 82 Preventiveilaintenance 1

47 83 Preventive Maintenance j l 47 85 Preventive Maintenance {

l l 48 88 Preventivu Maintenance i

56 90 Preventive Maintenance l t

48 92 Preventive Maintenance 46 94 Preventive Maintenance 47 95 Preventive Maintenance l

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

Page 4 of 4 i

Enclosure 3 LIST OF TUBES PLUGGED i San Onofre Unit 3 Steam Generator E-088 1

I Reg Column Reason  !

i 43 97 Preventive Maintenance t

48 98 Preventive Maintenance l

, t i 43 99 Preventive Maintenance l

l 40 100 Preventive Maintenance  !

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34 102 Preventive Maintenance i
32 104 Preventive Maintenance i

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Page 1 of 9 Enclosure 4 r LIST OF E00Y CURRENT INDICATIDNS L.

! San Dnofre Unit 3 Steam Generator E-089 l -

l Reg Column Indicationf% throuah wall) Location l 42 96 54 D8H-1.9 '

47 85 54 D8H+1.9 i i

43 79 51 08C+1.4 D8C+1.3  !

44 80 51 43 81 4? 08H+2.0 41 77 40 D8C 0.8  !

l 42 80 40 08C+1.8  !

48 90 40 D8C+1.1  !

I 43 77 37 08C+1.5 42 78 37 08H+1.7 41 79 36 08H+1. :t

{

46 92 36 D8H-1.4  ;

32 104 35 08C+1.5 l 41 79 33 VSM-0.6 f 49 85 33 D8H+1.8 i 54 86 33 08H 2.0 45 93 33 D8C+1.4 I 43 97 33 VSM 0.8 41 77 33 D8H+1.8  !

46 102 32 VSM 0.8 i 41 97 32 08C 1.2 43 79 32 D8H+1.8 41 75 32 D8C+1.3 49 81 32 DBC-1.0 l _ _ _ ___ _ __ - _ _ _ - -

Page 2 of 9 Enclosure 4 LIST OF EDDY CURRENT INDICATIONS San Onofre Unit 3 Steam Generator E-0C9 Egg Column Indicationf% throuah-wall) Location 47 91 31 DBH+1.9 135 57 30 09Ht11.9 120 54 29 09H+8.5 45 83 29 DBC-1.4 37 101 29 DBC+1.4 142 110 29 06C+22.6 138 94 28 TSH+19.2 30 4 27 040-3.6 41 79 27 DBH-1.7 33 103 27 DBH+1.7 122 132 27 04C+25.3 46 138 27 05C+12.2 43 97 26 t -, . 7 36 100 26 DBH+1.7  !

143 87 26 VHl+9.0 -

46 88 26 DBH+1.9 51 91 26 DSH 2.0 39 77 26 DBC+1.7 33 76 25 DBH 1.8 46 86 25 DBH-1.8 48 88 25 DBH+1.8 117 131 25 06H+31.9 133 97 24 06C+15.0 131 101 24 06H+9.2

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Enclosure 4 .

LIST OF EDDY CURRENT INDICATIONS San Onofra Unit 3 Steam Generator E-089  :

1 Egg Column IDdjcationff, throuch-wall) LQ.CAtlAA i

46 84 24 DBH+2.1  !

41 77 24 DBH 1.4  !

42 76 24 DBC+1.5  :

103 65 23 05H+9.7 i 38 76 23 DBC+1.4 I 44 80 23 D8H-1.9 i 108 80 23 07H+23.1 50 86 23 DBH-1.9 44 98 23 D8C+1.3 41 101 23 VSM+0.9 136 120 23 02C-5.2 135 57 22 VC1+d.8 129 65 22 VC3+8.0 42 70 22 -

VSM 0.9 59 71 22 VSM+2.1 50 76 22 DSC 1.0 123 77 22 03C+25.3 44 82 22 D8C-1.1 45 83 22 DBH+1.9 44 98 22 DBH+1.8 40 76 21 08C+1.1 103 65 21 05H+2.7 59 71 20 VSM+1.5 44 78 20 DBH+1.6 f

Enclosure 4 LIST OF ED0Y CURRENT INDICATIONS San Onofre Unit 3 Steam Generator E 089 Ro.w Column Indicationf%_tjzouch wall) location 46 96 20 DBH-1.7 l 135 101 20 05C+23.8 l 115 103 20 09H+19.1 !

104 28 <20 VH2-1.1 ,

j 80 34 <20 03C+17.0 j 101 35 <20 03H+12.2 104 36 <20 04C+15.0 (

118 38 <20 08H+10.3 :

j 122 44 <20 07C+8.7 i 48 46 <20 06H+12.3 l i

<20 06H+22.9 121 49 i

)

120 54 <20 10H-1.8 135 57 <20 10H+1.4 l 135 57 <20 VC1+21.2 ;

103 65 <20 VH2+5.3 j 129 65 <20 05C+8.2  ;

1 129 65 <20 VH2-1.3 l 35 73 <20 DBH+1.9 j 34 74 <20 DBH+1.7 i 36 74 <20 DBH+1.60

! 62 74 <20 OlH+27.6 !

l j 35 75 <20 DBH 1.9 i 35 75 <20 DBC+1.6 l 37 75 <20 DBH-1.7

Page 5 of 9 Enclosure 4 LIST OF EDDY CURRENT INDICATIDNS San Onofre Unit 3 , Steam Generator E-089 i 89g Column IDdicationl% throuch-wall) location l

l 37 75 <20 DBC-1,3 39 75 <20 D8C+1.6 41 75 <20 VSM 0.5 l

41 75 <20 VSM ,

43 75 <20 08C+1.7 36 76 <20 D8H+1.8 l 36 76 <20 VSM l

42 76 <20 08H+1.8 44 76 <20 D8H+1.7 .

46 76 <20 DBC-1.3 48 76 <20 D8C-3.9 .

l 43 77 <20 D8H+1.8 45 77 <20 DBH+1.8 45 77 <20 08C+1.6 i

40 78 <20 08H+2.0 40 78 <20 08C 0.9 40 78 <20 D8C+1.3  !

42 78 <20 08C 0,8  !

41 79 <20 DBC+1.6 41 79 <20 08C-0.6 I 43 79 <20 VSM-0.6 l l

49 79 <20 DBC 1.2 j l

42 80 <20 DBH+1.8  !

46 80 <20 03H+1.8 l

-. . =. .

Page 6 of 9 Enclosure 4 <

LIST OF EDF. CURRENT INDI'efl0NS San Onofre Unit 3 Steam Generator E-089

gg Column Indicationit throuah-wall) location 46 80 <20 D8C+1.5 50 80 <20 D8H-1.9 l ,

49 81 <20 D8H-1.8  ;

44 82 <20 D8H-1.9 44 82 <20 03H+2.0 48 82 <20 08C 0.9 49 83 <20 D8C-1.5 1 ,

l13 83 <20 CiH+4.8 49 85 <20 DBC-1.4 i

j 53 85 <20 D8C-1.3 139 25 <20 09H+18.7

l  !

] 46 86 <20 DBC-1.8 i 47 87 <20 08C+1.8 46 88 <20 DBC-1.4 ,

50 83 <20 D8C-1.7 4

47 89 <20 DBC+0.9  :

53 89 <20 DBH 2.2 48 90 <20 DBH+1.6 ,

50 90 <20 DBC-1.0 l 49 91 <20 DBH-1.8  !

! 49 91 <20 DBC-0.7 48 92 <20 DBH-1.9 a

1 48 92 <20 DBH 1.2 l 52 92 <20 DBH-1.4

1 Page 7 of 9 Enclosure 4 LIST OF E00Y CURRENT INDICATIONS

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San 0nofre linit 3 Steam Generator E-089 1

ggy Column Indicationf% throuch-wall) locating 112 92 <20 05C+6.8

) 44 94 <20 DBH-1.4

50 94 <20 DBC-1.1 4

49 95 <20 DBH+1.9 42 96 <20 DBH+1.5 42 96 <20 OBC-1.3 44 96 <20 OBH+1.7 46 96 <20 DBH-1.7 50 96 <20 VSM-0.7 140 96 <20 02C+34.9 43 97 <20 DBC-1.3 43 97 <20 VSM+0.8 47 97 <20 08C+1.4 55 97 <20 03H+4.0 133 97 <20 07C+6.8 42 98 <20 DBH-1.9 42 98 <20 DBH+1.9 44 98 <20 VSM+0.9 46 98 <20 DBH-1.9 48 98 <20 DBH+2.0 39 99 <20 DBH-1.7 41 99 <20 DBH+1.7 42 98 <20 OBC +1.4 41 99 <20 DBC+1.5

Page 8 of 9 :

Enclosura 4 LIST OF E00Y CURRENT INDICATIONS San Onofre Unit 3 Steam Generator E-089  ;

r Eg Column Indicationf% throuch-wall) location  !

47 99 <20 DBH-1.7

47 99 <20 DBC+1.5 93 99 <20 OlH+18.5

~

125 99 <20 04H+26.5 ,

36 100 <20 DBC-1,2 i

i 38 100 <20 DBC-1.3 ,

37 <20 VSM+0.8 101 f

34 102 <20 DBH+1.8 4

34 102 <20 DBC-1.1 l 44 102 <20 VSM 0.6 l

l 31 105 <20 DBC-1.2 i

{ 37 105 <20 VSM+0.8 j 129 105 40 02H+13.4 94 106 <20 03H+29.2 3

136 106 <20 TSC+23.5 144 106 <20 TSC+13.4 125 107 (20 VH3+7.9 125 107 <20 VH3+13.5 125 107 <20 VSM+8.0 64 108 <20 03H+12.5 i l

120 110 <20 06H+10.9 138 110 <20 04H+31.6 I 123 111 <20 09H+26.5 1

73 115 <20 05C+6.2 b

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Enclosure 4  ;

r LIST OF ED0Y CURRENT INDICATIONS

, San Onofre Unit 3 Stea.m Generater E-039 anu Column Indicationfs throuch-wall) Location 124 118 <20 01C+6.6 108 128 <20 05H+20.2 l 46 138 <20 04C+0.0 t 19 139 <20 OlH+15.4 -

9 151 <20 06H+28.8 L 39 155 <20 06C+36.2 20 156 <20 05C+16.6 20 156 <20 04C+3.6 20 156 <20 04C+2.6 -

42 164 <20 02C+26.2 t

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f Page 1 of 5 4 Enclosure 5 LIST OF TUBES PLUGGED San Onofre Unit 3 Steam Generator E-089 gg Column Reason

! 42 96 54% Indication at location DBH 1.9  ;

1 47 85 54% Indication at Location DBH+1.9 l 43 79 51% Indication at Location DBC+1.4  ;

44 80 51% Indication at Location DBC+1.3 i 43 81 Preventive Maintenance 35 73 Preventive Maintenance -

l 37 75 Preventive Maintenance 1

36 76 Preventive Maintenance l 44 76 Preventive Maintenance

! 39 77 Preventive Maintenance j 40 78 Preventive Maintenance 3 47 79 Preventive Maintenance

.I 46 80 Preventive Maintenance 47 81 Preventive Maintenance

! 48 82 Preventive Maintenance 46 84 Preventive Maintenance 51 85 Preventive Maintenance .

50 86 Preventive Maintenance

- 49 87 Preventive Maintenance 50 88 Freventive Maintenance i

, 53 89 Preventive Maintenance l i

j 49 91 Preventive Maintenance  !

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52 92 Preventive Maintenance l 4

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Page 2 of 5 i Enclosure 5 LIST OF TUBES PLUGGED San Onofre Unit 3 Steam Generator E-089  :

Roy Column 131tio.n  ;

44 94 Preventive Maintenance 49 95 Preventive Maintenance ,

41 97 Preventive Maintenance

! 44 98 Preventive Maintenance 1

41 99 Preventive Maintenance f 36 100 Preventive Maintenance l

33 103 Preventive Maintenance j 34 74 Preventive Maintenance 39 75 Preventive Maintenance 38 76 Preventive Maintenance 46 76 Preventive Maintenance 41 77 Preventive Maintenar.ce 42 78 Preventive Maintenance l

l 49 79 Preventive Maintenance -

48 80 Preventive Maintenance 49 81 Preventive Maintenance 45 83 Preventive Maintenance 48 84 Preventive Maintenance 53 85 Preventive Maintenance i

52 86 Preventive Maintenance i 51 87 Preventive Maintenance i i

47 89 Preventive Maintenance 48 90 Preventive Maintenance I

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l l Page 3 of 5 Erelosure 5 LIST OF TUBES PLUGGED l San Onofre Unit 3 Steam Generator E-089 i-Reg Column Reason 51 91 Preventive Maintenance 45 93 Preventive Maintenance 46 94 Preventive Maintenance 43 97 Preventive Maintenance 46 98 Preventive Maintenance 43 99 Preventive Maintenance 38 100 Preventive Maintenance 32 104 Preventive Maintenance 36 74 Preventive Maintenance 41 75 Preventive Maintenance 40 76 Preventive Maintenance 48 76 Preventive Maintenance 43 77 Preventive Maintenance 44 78 Preventive Maintenance 42 80 Preventive Maintenance 50 80 Preventive Maintenance 44 82 Preventive Maintenance 47 83 Preventive Maintenance 46 86 Preventive Maintenince 54 8G Preventive Maintenance 46 88 Preventive Maintenance 49 89 Preventive Maintenance 50 90 Preventive Maintenance

Page 4 of 5 Enclosure 5 LIST OF TU8ES PLUGGED San Onofre Unit 3 Steam Generator E-089 Rag column Reason 46 92 Preventive Maintenance i 47 93 Preventive Maintenance 48 94 Preventive Maintenance l 44 96 Preventive Maintenance 1

i 47 97 Preventive Maintenance

! 48 98 Preventive Maintenance ,

45 99 Preventive Maintenance ,

37 101 Preventive Maintenance 31 105 Preventive ' Maintenance '

35 75 Preventive Maintenance l <3 75 Preventive Maintenance i f

42 76 Preventive Maintenance i 50

  • 76 Preventive Maintenance 45 77 Preventive Maintenance l 46 82 Preventive Maintenance 49 83 Preventive Maintenance l 49 85 Preventive Maintenance 48 86 Preventive Maintenance 47 87 Preventive Maintenance 48 88 Preventive Maintenance 51 89 Preventive Maintenance 47 91 Preventive Maintenance 48 92 Preventive Maintenance 1

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Page 5 of 5 Enclosure 5 LIST OF TUBES PLUGGED San Onofre Unit 3 Steam Generator E-089 l

83 Coluwi Reason t

) 49 93 Preventive Maintenance [

50 94 Preventive Maintenance 46 96 Preventive Maintenance 42 98 Preventive Maintenance r i

39 99 Preventive Maintenance  ;

47 99 Freventive Maintenance 34 102 Preventive Maintenance l 41 79 Preventive Maintenance f i  :

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