ML20141M343
| ML20141M343 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 08/04/1992 |
| From: | Krieger R SOUTHERN CALIFORNIA EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9208110369 | |
| Download: ML20141M343 (10) | |
Text
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l Southem Califomia Edison Company I
SAN ONOFRE NUCLEAR GENERATING STATION '
P.O.ISOA12e SAN CLEMENTE CALFORNIA92674 0120 n w.xRisGe" AMWL4 "1 m staron uaNaoca (734,
..e33,.
f U. S. Nuclear Regulatory Commission Document Control Desk-l Washington, D. C. 20555 L
i
Subject:
Docket No. 50-361 E
Special Peport - Inservice Inspection cf: Steam Generator Tube ~s-i-
Sen Onofre Nucler.r Generating >Stationi_ Unit 2-i l
References:
A.
PWR Steam Generator Examination Gui 611nes, Revision 2, Electric Power Research Institute-(EPRI) Repor Number-j' NP-6201, dated: December 1988.
B.
Letter from M. O. Medford'(SCE) to Mr. G. l'. Knighton l
(USNRC) dated April _5, 1985.-
Pursuant to Surveillance Requirement 4.4.4.5(h) of Appendix-A, Technical Specifications to Facility' Operating License-_NPF;10; this: report is being.
submitted to the Commission following the completion of-inservice inspection-c of' steam generator' tubes at San Onofre Unit-2.
F Edoy current i.,spection of the steam generator tubing was completed on -
September 18,-1991.
A. total of 4205 tubes',(23.2% of the tut'es in service) :in j-two steam generators were. inspected full length and 41 tubes were removed from -
service by mechanical plugging..This inspection significantly: exceeded the i
amount of tubing required to be inspected per Surveillance _ Requirements:
~
1-4.4.4.0 through 4'.4.4.2 including all; prospective C-2. expansions (i.e.,
a 3%:_
sample plus a 6% (2S) and a 12% (4S) expansion in _each steam generator].
t The planned. inspection programs for both stehm generators-were. fully, concistent with recent inoustry reconaendations in the'"PWR Steam Generator
-Examination Guidelines" (Reference A). _The programs included inspection of' the. full length of 100% of the tubing.in the area' of the tuba bundle where the batwing wear mechani'sm previously described;in Reference B:is active, and tubes adjacent to tie-rods.
In Steam. Generator-E-088, 2113 tubes were. inspected. No tubes were found to
~
be defective.. Four tubes _were preventively _ plugged due to the wear' mechanism previously-described in Reference Bi.Four. tubes were preventively pingged due to_ tie-rod-dsnting. - Two tubes were preventively plitag' d due to non-t e
Auratifiable' bobbin probe-indications. ' Although the motorized rotating par.t.ke coil (MRPC) probe results for these two tubes' revealed the indications' to ta below the plugging limit and characterized them as manufacturing.
Lartifacts, they were conservatively plugged.
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9208110369 920804.
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Document Control Desk 2-L In Steam Generator.E-089, 2092-tubes were inspected. One tube was.found-l:
defective-and was plugged. The 460throughwall:indicationLin this tube was
' reported as 43% throughwallfin the previousHinspection and through comparison of current and previous results,--no significant growth is indicated. Thirteen tubes-were preventively pl_ugged due to the wear mechan _ ism previously described in Reference S.
Five tubes:were preventively-plugged due;to degradation at a-vertical strap support. - One tube was preventively plugged due;to the weart mechanism previously described in Reference B and degradation at a vertical strap support.. Eleven tubes were preventively plugged due:to tie-rod denting.
l.
As' required by Surveillance Requirement 4.4.4.5(b), complete results of the l
recently completed inservice' inspection of steam generator tubing are provided in the enclosures.
Enclosuro L1 provides the steam generator internal: location -
reference guide. The eddy: current indication-locations listed in the.
q remaining enclosures are based upon-this guide. Enclosures '2 and 4 provide = a.
-list of eddy.. current testing indications,; including tube identification, indication depth,-and the: axial location of the indicationLin'the tube..
Enclosures-3 and 5-provide-a list of tubes plugged after completion of the" inservice. inspection.
If you require any additional irformation, please so advise.
. Sincerely,-
4 9
/h hGW
- j O
Enclosures:
1 Combustion Engineering Model 3410 Steaia Generator Tube Support: Drawing, C1arificationLofi LTubing/ Support _ Interfaces, and Tubesheet Map 2
List of Eddy' Current Indications," Steam Generator-E-088-a 3
List of-Tubes Plugged, Steam Generator E-088
-4
- List'of Eddy Current; Indications; Steam Generator E-089-5 List of Tubes Plugged, Steam Generator E-089 1
I cc:
J. B. Martin. (Regional: Administrator, 'USNRC Region V)-
L C. W. Caldwell (USNRC Senior-Resident Inspector,-~ Units 1; 2 & 3)
M.- Fields (Project Manager, SONGS 2/3, USNRC, NRR)
Institute of Nuclear Power Operations, (INPO) r a-,
u,
- -....... -.... w. ;
,,.--,,.a.,-,-.
Page 1 of 3 CE MODEL 3410 TUBE SUPPORT DRAWING VH2 VSM VC2 VH1 VH3 VC3 VC1 1
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l I
DBH DBC l
10H IOC j
't 30.75 'k I
09C 09H 30.75' OSH 08C 30.15' 07H 07C 38' I
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Page 2 of 3 CLARIFICATION OF TUBING / SUPPORT INTERFACES AB0VE THE 7TH FULL EGG.'.'< ATE SUPPORT R0WIS)_
TUBING / SUPPORT INTERFACES 120-147 08H.09H.10H.DBH.VHl.VH2.VH3.VSM.VC3.VC2.VC1.DBC.100.090.08C 115-119 08H.09H DBH.VHl.VH2 1f13.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 51-82.
08H DBH VH3.VSM.VC3.
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COMBUSTION' ENGINEERING.MODEL 3410 STEAM GENERATOR TUBESHEET MAP d
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TOTAL TUBES 9350 i
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CUMULATIVE REPORT
-09/91, SOUTHERN CALIFORNIA EDISON, SAN ON0FRE, UNIT 2 STEAH GENERATOR: 88 PAGE:
1 0F 1:
LOCATION: ALL DATE:
09/24/91-CRITERIA: 0% TO 100%
TIME:
15:26:43 EXAM ;XTENT CURRENT R0W COL llEATf LEG PRCORAM ACTUAL REM REEL PROBE LOCATION V0LTSIMILlDEG%
.CH
-6Y T6
~C-T5F0TC T5F0TC m 59 E TSC+ 8.68 1.5
~TT ~2V T 84 18 H
TEH-TEC TEll-TEC 002 5800L TSC+ 1.12
-1.2 139 33 1
78 22 L H
TEH-TEC TEH-TEC 003 580UL VC3--0.72 0.8 0
24 18 90 42 H iTEH-TEC TEll-TEC 007 580VL 06}{+ 14.07 0.5 155 <20 1
88 66 H
TEH-TEC TEll-TEC 036 580VL 02C- 0.90 0.9 0
27 18 l
46 74 11-TEH-TEC TEH-TEC 023 580VL DBC+T 1.89' l.4 10 35 18 144 72 11 TEH-TEC TEH-TEC 023 580VL VSM-1.07 0.8 0
25 18 11 TEH-TEC TEH-TEC 023 580VL VSM+ 0.93 1.0 0
28 18 39 75 11 TEH-TEC TEH-TEC OE3 580VL VSM+ 0.85 0.8 0
25 18 45 77 H
TEll-TEC TEH-TEC 024 580VL DBC-2.13 0.8 0
24 18 101 77 H
TDI-TEC TEll-TEC 024 580VL 0B11+ :1.17 1.0 0
27 18 119 77 H
TEli-TEC TEH-TEC 024 580VL Vil2- :1.55 0.9 0
26 18 60 80 H
TEH-TEC TEH-TEC 024 580VL VSM- 0.67 0.4 105 <20 18 50 86 C
TEC-TElf TEC-TEH 047 580UL DBH-1.81 1.4
-0 34 18 9'
87 H'
TEH-TEC TEH-TEC 026 5000L TSC+' 4.74 0.8 157. <20.1 147 87 11 TEll-TEC TEH-TEC 026 580VL DBC+~ 1.72 0.9 0
^29 18 53 89 H
TEH-TEC TEH-1EC 038 5800L 08C-1,61 0 -. 5 0 <20 18 51 91 H
TEH-TEC TEti-TEC.
038 580VL DBil-.l.74 0.3 0 <20 18 50 92 H
TEH-TEC TEH-TEC 038 5800L DBit - :1.48 1,6
'O 35 18 fl TEH-TEC TEll-TEC
-038 5800L DBC-1.76 0.5 0 <20 18 49 93 11 TEH-TEC TEH-TEC 038 5800L. DBC El.55 0.3 0 <20 18 51 93 H
TEH-TEC TEH-TEC 038 580bl(DBC+
0.00-0.3 0 <20 18 118 102 H
TEH-TEC TEH-TEC 032 5800L DBil-2.58 0.5 0 <20 18 H
TEll-TEC TEH-TEC E032 580VL 00ll+ - 2.30 L 0.9 27 18 138 102 H
TEH-TEC TEH-TEC
_032 580VL DBH-1.30.
0.7 0
24 18 69 107 H
TEll-TEC TEH-TEC l 030 580VL TSil+ 3.48:
,0.4 143 27 1
l 27 117 H
TEH-TEC TEH-TEC 019 580VL VSM+
l.'19 l' 1 0
29 18 l123 127 H
TEH-TEC TEH-TEC 027 5800L DB}l+ 1.'37 0;3 0 <20 18 l
1 30 142 C
03C-040 03C-04C 050 590RC 03C+ 33,00?
l.2 84 38 4
44 152 H
TEH-TEC TEti-TEC 015 580VL DBil+ 2.73 0.5 0 <20 18 NUMBER OF TUBES SELECTED FROM CURRENT OUTAGE:
27-NO TREND ANALYSIS REQUESTED l
e CONAH HUCLEAR, lHC.
r
.\\
. LIST OF TUBES PLUGGED San Onofre Unit 2 Steam Generator E-088 Row Column Reason 82 16 Preventive Maintenance-50 92 Preventive Maintenance 45 141 Preventive Maintenance 144 72 Preventive Maintenance 43 139 Preventive Maintenance 30 142 Preventive Maintenance 4c 77 Preventive' Maintenance.
42 140
-Preventive Maintenance 50 86 Preventive Maintenance 43 141 Preventive Maintenance l
i
.l
CUMULATIVE REPORT 09/91, SOUTilERN CAllFORNIA EDISON, SAN ONOFRE, UNIT 2 STEAM GENERATOR: 89 PAGE:-
1 Of~
2-LOCATION: ALL DATE:
09/24/91 CRITERIA: 0% TO-100%
TIME:.
15:36:28-l l
EXAM EXTENT CURRENT ROW COL HEATl LEG PROGRAM ACTUAL REM REEL PROBE LOCATION VOLTS MIL DEG CH
'l2 2
T TEC TED TEC TER "MT 5KOVE 7sM-1.84_
03
~~1 11 T6 94 32 C
TEC-TEH TEC-TEH 005 580VL VH2+ 0.84 0.5 0 <20 18 47. 37 C
TEC-TEH TEC-TEH 005 580VL VSM- 0.12 1.7 0
33 18 108 42 C
TEC-TEH TEC-TEH 006 580VL DBH-1.95 0.6 0 <20 18 C
TEC-TEH TEC-TEH 006 5800L DBH+ 2.00 1.0
.0 25 18 116 42 C
TEC-TEH TEC-TEH 006 580VL 03H+ 9.49 0.6 146 22 1
122 42 C
TEC-TEH TEC-TEll 006 580VL DBC-2.99
- 1.0 0
25 18 121 45 C
TEC-TEH TEC-TEH 007 5800L VC2+ 0.00 1.0 0
26 18 123 57 C
TEC-TEH TEC-TEH RPI 009 580VL TSc+ 8.51 1.6 121 46 1
143 67
'C TEC-TEH TEC-TEli 011 580VL DBHf 2.26-0.6
'O 21 18 30 74 C
TEC-TEH TEC-TEH 028 580VL DBC-1.62 0.6
- 0 23 18 45 75 C
TEC-TEH TEC-TEH 028 580VL DBil+ 1.36 1.2 0
34 18 44 76 C
TEC-TEH TEC-TEH 028 580VL DSC-- 1.45
-0.5 0 <20 18 48.
76 C
TEC-TEH TEC-1 Ell 028 580UL DBC-1.75
- 0.8 0
28 18 43 77 C
TEC-TEH TEC-TEH 029 5800L DBC+ 'l.92 1.4 0
31 18 45 77 C
TEC-TEH TEC-TEli 029 5800L DBC+ 2.04 1.1 0
21 18 42 78 C
TEC-TEH TEC-TEH
-029 580VL VSM- _0.99E 2.9 0
42 18 C: TEC-TEH TEC-TEH 029 580VL VSM-0.03~
2.9 0
42 18 C
TEC-TEli TEC-TEll 029 580VL VSMt 0.73 2.7 0
41 18 C
TEC-TEH TEC-TEll 029 580VL DBC-- 1.60 1.4 0
31 10 54 78 C
TEC-TEH TEC-TEH 029 580VL 04H+ 8.43 0.5 150 <20 1
49 81 C
TEC-TEH TEC-TEH 029 580VL DBC - 1.31 0.5 0 <20 18 48 82 C
TEC-TEH TEC-TEll 029 580VL DBH-- 1.77 0.4 0 <20 18 52 82 C
TEC-TEH TEC-TEH 029 580VL DBC+ 1.52 1.9 0
36 18 C-TEC-TEli TEC-TEll 029 5800L DBC =-1.81-1.4 0
31 18 1 56 82 C
TEC-TEH TEC-TEH 029 580VL Vil3- -0.70 1.1 0
27 18 53 85 C
TEC-TEH TEC-TEH 030 580VL DBH+ 1.47.
0.8 0,.27 18 52 86 C
TEC-TEH TEC-TEH
'030 580VL DBit- - 1.74 0.6 0
23 18 81 91 C
TEC-TEH TEC-TEli
=018 580VL VSM- 0.92 1.2 0
27 18 C
TEC-TEH TEC-TEli 018 580VL VSMt 1.18 0.9 0
26 18 C
TEC-TEH TEC-TEH 018 5800L VC3-1.10 1.7 0
35 18 81 97 C
TEC-TEH TEC-TEH 019 5800L VSM+ 0.61 2.4 0
40 18 C
TEC-TEH TEC-TEll 019 580VL VC3+ 0.35 1.3 0
13 2 18 1
44 98 C
TEC-TEH TEC-TEll
.017 580VL DBil+ 1.78 1.1 0
29 18 41 99 C
TEC-TEH TEC-TEH 017 5800L DBC+ 1.72 0.8 0
24 18 C
TEC-TEH TEC-TEH
-017 580VL DBC-1.46 0.6 0
20 18 47 99 C'
TEC-TEH TEC-TEli 017 580VL DBH+ -1.38 0.6 0
20 18 C
TEC-TEH TEC-TEH 017 5800L VSM- 0.98 0.7 0
21 18 40 100 C
TEC-TEH TEC-TEH 018 580VL DBC+ 1.79
- 0.8 0
24 18 C
TEC-TEH TEC-TEli 017 580VL DBC-1.80
. 0.7
-0 21 18 98 102 C
TEC-TEH TEC-TEll 019 580VL TSC+ 1.09:
1.2 158 <20 1
39 103 i C
TEC-TEH TEC-TEH 016 5800L DBH-1.651 0.6 0
21 18 42 112 C
TEC-TEH TEC-TEH 015 580VL VSM- 0.93 0.2 0 <20 18 44 112 C
TEC-TEH TEC-TEH 015 580VL VSM- 0.72 0.6 0 <20 18 l
C TEC-TEH TEC-TEH 015 5800L 07C+ 12.97-0.5 140 29 1
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1 CUMULATIVE REPORT 09/91 SOUTilERN Calif 0RNIA EDISON, SAN ON0FRE, UNIT 2 STEAM GENERATOR: 89 PAGE:
2 Of 2 !
LOCATION: ALL DATE:
09/24/91-!
CRITERIA: 0% T0 100%
TIME:
15:36:28..
EXAM EXTERT CURRENT R0W-COL llEATI LEG PROGRAM
^ ACTUAL REM REEL PRODE LOCATION VOLTS Mll DEG Cll T33 T13 T-TEC-TER TEC-TEH T2T 5UUUE VH3- 0.03 m
0 TI TB 73 117.
C TEC-TEH TEC-TEi!
026 5800L VC3-1.08 1.3 0
36 18 81 127 C
TEC-TEH TEC-TEH 022 580VL VSM- 0.95 0.8 0
24 18 C
TEC-TEH TEC-TOl
-022 580VL VC3- 0.72 1.1 0
29 18 84 132 C
TEC-TEH TEC-TEll
.023 580VL VC2- 0.91 0.G 0 <20 18 80 136 C
TEC-TEH TEC-TEli 036 580VL VH3 10.75 1.2 0
29 18 49 147 C
TEC-TEH TEC-TEtt 034 580VL 0 811- 'l.28 1.2 0
29 18 80 152 C
TEC-TEH TEC-TEli 033 580VL VSM- 0.89-0.9 0
25 18 C
TEC-TEli TEC-Tal 033 580UL VC3- 0.52 0.7 0
21 18 49 157 C
TEC-TEH TEC-TEll 033 5800L VSM. 0.43 '
O.9 0
28 18 l:
l NUMBER OF TUBES SELECTED FROM CURRENT GUTAGE:
41 NO TREND ANALYSIS REQUESTED-l 1
l CONAM NUCLEAR, INC.
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8 Page 1 of 2 LIST-0F TUBES PLUGGED San Onofre Unit 2-Steam Generator E-089 4
Row Column Reason 4
42 36 Preventive-Maintenance 42 70 Preventive Maintenance-76 Preventive Maintenance-48 1
52 82 Preventive Maintenance 91 89 Preventive Maintenance
- ~
41 99 Preventive Maintenance i
43 107 Preventive Maintenance I
42 140 Preventive Maintenance 43 37 Preventive Maintenance 1
45 71 Preventive Maintenance
~
43 77 Preventive Maintenance 53 85 Preventive Maintenance-81 91 Preventive.Maintenar.ce 47 99 Preventive Maintenance 133 113 Preventive Maintenance 43 141 Preventive Maintenance 47 37 Preventive Maintenance 36 74 Preventive Maintenance 45-77 Preventive Maintenance 52 86 Preventive Maintenance-t 4
t t
6
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Page 2 of 2 LIST OF TUBES PLUGGED-San Onofre Unit 2-Steam-Generator E-089 Eqw Column Reason 81 97 Preventive Maintenance 40 100 Preventive Maintenance 73 117 Preventive Maintenance 45 141-Preventive Maintenance 123 57 46% Indication at TSC + 8.51 45 75
-Preventive Maintenance 4x 78 Preventive Maintenance 94 88 Preventive-Maintenance 44 98-
-Preventive Maintenance 39 103 Preventive Maintenance 4
43-139
~ Preventive Maintenance l~
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