ML20057B991
| ML20057B991 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 09/16/1993 |
| From: | Pritchard R CONNECTICUT YANKEE ATOMIC POWER CO. |
| To: | |
| Shared Package | |
| ML20057B989 | List: |
| References | |
| NUDOCS 9309240254 | |
| Download: ML20057B991 (35) | |
Text
, -.,,.
CONNECTICUT YANKEE ATOMIC POWER COMPANY l
HADDAM NECK PLANT i
1993 Refueling Outage o
t 7
Steam Generator Tube. Inspection Report
+
A u.1Lk>
1hsin Prepared By (R. W. Pritchard)
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Aphroved By (J. L. DeLawrence)
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RevicMd B (C. J. Gladdingy hDR AD K O 000213 O
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TABLE OF CONTENTS 1
l 1.0 S UM M ARY.......................................................... 2 i
1.1 D e fin i t i o n s..................
...... 2 1.2 ECT Inspection................................................ 2 1.3 Mechanical Pl uggin g.......................................... 3 1.4 Visual Inspection...........
.... 3 j
1.5 Mechanical P1ug Re pai r..........
..........3 i
1.6 Tube Repair....
.3 2.0 STEAM GENERATOR DESIGN DATA.......
............... 4 I
3.0 DISCUSSION......
........................................ 5 3.1 ECT Inspection..
...5 i
TAB LE 1......
.......... 6 3.2 M echanical Pluggin g.....................
...... 7 TA B LE 2.........
... 8 TABLE 3.
.9 3.3 Visual Inspections..............
10 3.4 Plug Repairs...............
10 3.5 Tube Repair by Roll Expansion................
.................10 4.0
SUMMARY
STEAM GENERATOR EXAMINATION RESULTS,..........10 5.0 LOCATION OF EACH PLUGGED TUBE............
.................10 6.0 LOCATION OF PLUGS REPAIRED..
............... 10 7.0 LOCATION OF TUBES REPAIRED.........
10 1of10
g 1,0
SUMMARY
During the period of May 22,1993 to June 15,1993 Eddy Current Testing (ECT) and mechanical plugging were performed on all four steam generators (SG's) in accordance 1
with Technical Specification 4.4.5. Other SG primary side activities this outage included a visual inspection of all tube plugs / PAP's installed to date, plug repairs on all cold leg Westinghouse mechanical plugs made from Heat No. NX-3513 using Babcock and Wilcox Plug a Plug (PAP) device, and tubes were repaired by roll expansion (RX).
The results of each inspection and repair conducted during the End of-Cycle 17 refueling outage relative to the steam generators is summarized in Section 1.2 thru 1.5.
1.1 Definitions The following terms are used in this report:
1.1.1 ATS-Above Tubesheet - Used to identify an area where flaws are located.
I 1.1.2 ATSP - Above Tube Support Plate. Used to identify an area where flaws are located. In this report ATSP flaws are included in one group. There are 4 tube support plates in the Westinghouse Series 27 SG.
1.1.3 AVB - Antivibration Bar 1.1.4 Defect - In accordance with Connecticut Yankee Technical Specifications, any flaw that shows 50% or greater thruwall. Also, any flaw located less than 1" below the roll transition.
]
l 1.1.5 ECI-Eddy Current Testing i
i 1.1.6 E* - A minimum required amount of sound roll needed between the
~
bottom of the roll transition and the top of a crack in the expanded region of the tube in the tubesheet. At Connecticut Yankee the F* length is 1".
1.1.7 Flaw - Any indication that shows a percent thruwall 2 20%.
1.1.8 PWSCC - Primary Water Stress Corrosion Cracking 1
1.1.9 S_Q - Steam Generator 1.1.10 1%E - Babcock & Wilcox designed " Plug a Plug" used for mechanical plug repair.
1 -.2 ECTInspection i
A 100% full length tube ECT inspection was performed on each steam generator (13,987 total tubes').
-j 1.2.1 The inspection revealed that 3,042 tube sides contained one or more reportable flaws (= 22% of total tubes tested).
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i 4
78% of the flaws were located above the tubesheet,13% were located above the tube support plates and 6% at the anti vibration bars. The remaining flaws were located within the tubesheet, mostly in the hot leg :
I roll transition region.
1.2.2 As a special test, U-bends of approximately 159 lower row tubes and 94 dented tube support locations were examined with a motorized rotating pancake coil (MRPC) probe for PWSCC. No tubes were found to contain PWSCC.
~
1.3 Mechanical Plugging A total of 39 tubes were plugged during the 1993 refueling outage. After 17 cycles of operation,8% of the steam generator tubes have been plugged.
1.3.1 Completion of the 1993 refueling outage plugging effort brings the total
-l number of tubes plugged to 1228 with the following bn:akdown:
i SG #1 247 SG #2 414 SG #3 108 SG #4 459 1.4 Visual Inspection A visual inspection for leakage of all previously installed plugs and plugs repaired with leak limiting retainer devices was performed. ' All items inspected were found j
to be acceptable.
- 1.5 Mechanical Plug Repair (PAP)
J Potentially defective cold leg Westinghouse mechanical plugs from HT #3513 were j
repaired by Connecticut Yankee by installing plug repair inserts which are i
manufactured by B&W. The B&W plug-a-plug (PAP) inserts are designed to prevent a plug top release incident, capture potential loose parts, and reduce leakage through defective plugs to acceptable levels.
l A total of 590 PAP's were installed in Westinghouse mechanical cold leg plugs produced from'the susceptible Inconel 60011 eat #3513.
.j 1.6 Tube Repair (Roll Expansion)
A roll expansion (RX) process was used to repair defective steam generator tubes which contain PWSCC in the roll transition region of the tubes. Roll expansion is a 1
process whereby a new mechanical joint is produced by hard rolling the tube against the tubesheet above the existing tube defects. The defective portion of the tube is removed from the primary pressure boundary and the repaired tube is l
acceptable for continued service.
l A total of 83 tubes were repaired by the roll expansion (PJ) process.
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i 2.0 STEAM GENERATOR DESIGN DATA For Westinghouse Model 27 SG's:
I Component (s)
Design Criteria SG Tubes Numberof tubes (each) 3.794 Tube Material (Inconel)
ASME SB-163 AVG O.D.
0.75" M AX O.D.
0.755" AVG Thickness 0.055" MIN Thickness 0.0495" A V G 1.D.
0.64" M AX 1.D.
0.0656" Surface Area 27.700 sq. f t.
SG Tubesheet Design pressure 2485 psic Design temperature 600 F Allowable Stress 17500 psig Material ASTM-A-266 GR 11
'I hickness (base metal only) 22.625" SG Diameler Uppershell 1l' !1.75" LowershcIl 9' 1 "
Overall length 45'11" Primary Side Design pressure 2485 psig Design temperature 650 F Inlet temperature 575'F Outlet temperature 535"F Flow Rate (each SG) 25.4 x 106 lb/hr l
Secondary Side Design pressure 985 psig
[
Design temperature 600'F Flow Rate (each SG) 1,951.000 lb/hr Max moisture carry-over
.25% weight i
i i
i 4 of 10 l
1 1
d 3.0 DISCUSSION 3.1 ECT Inspection i
3.1.1 Table 1 provides a summary of the entire SG ECT Inspection workscope performed during the 1993 Refueling Outage.
3.1.2 A 100% full length tube ECT inspection was performed in all four SG's (13,987 tubes). In addition, tubes with PWSCC within the tubesheet roll region were inspected with the specially designed F* probe. Tubes identified by bobbin coil ECT to have possible roll transition flaws were inspected with a 3-coil motorized rotating pancake coil (MRPC) probe.
During the 1986 ECT program, PWSCC was identified within the roll expansion region of several SG tubes in all four steam generators. The roll expansion region is a 4.25 inch section at the end of each tube that is expanded against the tubesheet on both the inlet and outlet side of the SG. The cracks tended to be oriented in the axial direction and occurred i
t primarily at regions of tube geometry variations ('i.e., roll transitions).
3.1.3 The Row I U-bends (61 tubes)in SG 4 and Row 2 U-bends (98 tubes) in SG 1 were inspected with a flexible U-bend MRPC probe and did not identify any U-bend cracking.
3.1.4 This outage also included an inspection of dented locations at tube supports using a gimbled MRPC probe. This probe,in sizes small enough to traverse large dents, is a surface riding MRPC probe designed to identify flaws within dented tube support k) cations. A total of 94 dented tube support locations were inspected with no flaws identified.
i 3.1.5 The inspection this outage did, however, identify some large percent i
throughwall defects (with bobbin) at orjust above the hot leg tubesheet in SG 1. A MRPC inspection was performed on these flaws and indicated i
that some of these tubes contained circumferential oriented indications approximately 1 inch above the hot leg tubesheet. An expanded MRPC inspection workscope was conducted, which identified a total of 11 tubes J
in SG 1,4 tubes in SG 2, I tube in SG 3 and 2 tubes in SG 4 containing circumferential oriented indications.
Ultrasonic tests (UT) were performed on 10 of the 18 tubes containing circumferential oriented indications and confirmed the existence of shallow O.D. degradation. The results of the ultrasonic testing showed the degradation to be 30% TW and made up of several short segments.
The most probably degradation mechanism is shallow wastage with tightly adhering O.D. deposits. An assessment of these indications concluded that in no case were the requirements of Regulatory Guide 1.121 exceeded.
3.1.6 The results of the 1993 inspection showed 3,042 tube sides out of 13,987 tubes tested (22%) contained reponable flaws.
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Table 1 Connecticut Yankee Steam Generator Examination 1993 Refueling Outage Summary of Tests Performed TEST AREA SG 1 SG 2 SG 3 SG 4 M E'IIIO D EXAMINED HOT COLD HOT COLD HOT COLD HOT COLD TOTAL BOBBIN FULL LENGTH 3558 3392 3691 3346 13,987 FSTR ROLL REGION 2
0 147 8
112 26 397 31 723 RPC ROLL REGION 3
0 27 0
3 0
88 1
109 TOP OF TUBESHEET*
571 11 125 17 121 2
42 2
881 TUBE SUPPORTS
- 85 0
7 2
0 0
0 0
93 U-BENDS 1
97 0
0 0
0 0
61 159 UT TOP OF TUBESHEET 10 0
0 0
0 0
0 0
10
- At or above support locations 1
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1 l
l 1
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3.2 Mechanical Plugging l
3.2.1 A total of 39 tubes were plugged during the 1993 refueling outage.
Completion of the 1993 steam generator effon brings the total number of tubes plugged to 1228.
The 1993 refueling outage plugging breakdown is as follows:
1 REASON SG 1 SG 2 SG 3 SG 4 TOTAL 1
Secondary Side 8
5 0
2 15 Defects t
HL.ATS 1
4 1
2 8
l Cire. Indications PWSCC Roll 2
3 0
8 13 Transition 11L PWSCC t
0 0
2 0
2 l
Roll Region CL PWSCC 0
0 O
7 Roll Region l
l TOTAL 1)EFECTS 11 12 5
12*
40 TOTAL tunes 11 12 5
11 39
- One tube contained both a primary and secondary side defect.
3.2.2 Detailed historical plugging summaries are provided in Table 2 and Table 3.
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Table 2 Connecticut Yankee Steam Generator Historical Plugging Summary (Total Tubes Plugged)
Following the 1993 RFO STEAM GENERATOR #
INSPECTION YEAR I
2 3
4 TOTAL 1966 - MAY 1
2 3
1970 - JUNE 2
2 1972 - JUNE 1
14 15 1973 - AUGUST 10 10 1975 - MAY 8
8 1976 - JUNE 1
1 2
4 1977 - OCTOBER 1
1 2
1979 - FEBRUARY 1
1 1980 - MAY 2
2 1981 - OCFOBER 5
18 2
25 1983 - FEBRUARY 111 106 1
2 220 1984 - AUGUST 8
52 6
1 67 1986 - J ANUARY 12 22 14 13 61 1986 - JULY 33 38 55 126 1987 - JULY 57 64 9
223 353 1
1989 - SEPTEMBER 13 69 4
73 159 1990- OCTOBER 1
1 1991 - SEPTEMBER 26 31 14 59 130 1993 - MAY 11 12 5
11 39 toy g,jt ES 247 414 108 459 1228 g
f l
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u Table 3 Connecticut Yankee Steam Generator. Tube Plugging Ilistory STEAM GENERATOR #
TOTAL tulle PLUGGIN(*,
PLUGGED REASON
]
2 3
4 TURES Antivibration Bar Wear 4
1 5
6 16 Cold Leg Wastage 0
2 0
0 2
Cold Leg Tubepull 0
0 2
0 2
Denting (0.4Mr Restriction) 10 29 3
0 42 Denting (Incomplete Test) 0 14 0
0 14 Discretionary (RPC Indication) 0 1
0 0
1 Distorted Support Plate 0
0 2
2 4
Indication (DSD Distorted Tubesheet Indication 3
1 0
0 4
(DSD Dent With An Indication (DN1) 3 0
0 0
3 Failed Tubepull 0
1 0
0 1
liot Leg Wastage 0
1 15 18 34 110t Leg Tubepull 0
1 0
0 1
i Inadvenent 1
1 0
3 5
Leater 1
6 0
0 7
i t
Mismarked Tube 1
0 0
0 1
j I
Pitting 3
32 13 6
54 4
(Cold Lee Above Tubesheet)
PininE 12 33 7
20 72 (flot lee Above Tubesheet)
Pitting (Cold Leg Above Tube 2
0 0
0 2
Support Phte)
Pating 0101 Leg Above Tube 40 31 0
0 71 Support Plate)
Pitting (U-Bend) 0 1
0 0
1 j
Preventive (0.593 Guage) 1 2
0 0
3 Preventative (Failed Tubepull) 0 4
0 0
4 Preventative (Row 1) 100 100 0
0 200 PWSCC 62 51 0
$09 322 l
(Hot Lee Roll Transition 4 PWSCC (Hot Leg Roll Region) 2 76 58 79 215 PWSCC (Cold Leg Roll Region) 1 18 2
111 132 Topof Tubesheet 1
8 1
5 15 (Hot lee Recion)
TOTAL TURES PLUGGED 247 414 108 459 1228 r
i i
9 of 10 f
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...,.,,,,_._.._....-...__..._._.,_,._.....-......-___,.__,_-,-....,._._,..-.,,,.m v.,_.-,..
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3.3 VisualInspection.
A visual inspection of all previously installed plugs and plugs repaimd with leak limiting retainer devices (i.e., B&W PAP's) was performed to supplement other inspections. For plugs and PAP's, the only rejectable condition is one in which water is observed to be actively dripping under static secondaty side head or when the secondary side is pmssunzed. All plugs and plugs with leak limiting retainers that were examined in each SG were found to be acceptable.
2 3.4 A total of 590 plug retainer devices, termed PAP's, were installed this outage in specific cold leg plugs locations. These plug repairs complete the scope of repairs required to address plug failures associated with PWSCC of susceptible Westinghouse plugs produced of Inconel 600 Heat #3513.
3.5 Tube Repair by Roll Expansion i
A new r.,Jr technique utilizing Roll Expansion (RX) was implemented, for the first time, during the outage. The use of the roll expansion process is to repair defective steam generator tubes which contain pnmary water stress corTosion -
cracking (PWSCC) defects in the hard roll region. The tube repair by RX is a process where a new mechanical joint is created by hard miling the tube against the tubesheet above existing tube defects. The defective portion of the tube is removed from the primary pressure boundary and a new F* boundary is established, thereby allowing the tube to remain in service.
A total of 83 tubes in two steam genemtors were repaired suing this method during the outage.
4.0 SUMM ARY OF STEAM GENERATOR EXAMINATION RESULTS summarizes the location and maximum pement throughwall depth per tube j
side fnr various flaw types identified during the 1993 eddy current exammation.
The secondary side flaws included in the attachment represent each of the four secondary i
side defect mechanisms (ATS pitting / wastage, ATSP pitting, AVB wear, and ATS cire indications). This method of summarizing the inspection results provides a means of comparing the various defect mechanisms.
5.0 LOCATION OF EACH PLUGGED TUBE i
The location and reason for tubes being plugged is given in Attachment 2.
1 6.0 LOCATION OF PLUGS REPAIRED The location of each plug repaired along with the year the plug was installed is shown in.
t 7.0 LOCATION OF TUBES REPATRED The location of each tube repaired by roll expansion is shown in Attachment 4.
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i Steam Generator Examination Results 1993 CY Refueling Outage J
1
SECONDARY SIDE ABOVE TUBESIIEET - PITflNG/ WASTAGE MAXIMUM FLAW DEFTH PER SIDE SG 1 SG 2 SG 3 SG 4 TOTAL
%'IW(a)
H C
H C
H C
H C
H C
20- 2970 68 195 48 629 21 339 25 210 162 1373 30 - 397c 23 50 34 431 18 122 12 47 87 650 40-4970 2
11 11 93 5
9 7
13 25 126 2 5070 4
0 1
3 0
0 1
0 6
3 Not Quantified 1
0 0
0 0
0 0
0 1
0 l
ABOVE TUBE SUPPORT PLATE - PITTING M AXIMUM FLAW DEPTH PER SIDE SG 1 SG 2 SG 3 SG 4 TOTAL q.ny(a)
H C
H C
H C
H C
H C
20-29 %
81 6
31 4
4 1
6 2
122 13 30 - 39 %
98 4
57 2
3 1
1 0
169 7
)
40-4970 r
0 33 2
0 0
0 0
90 2
i 2 507o 1
0 1
0 0
0 0
0 2
0 Not Quantified 1
0 0
0 0
0 0
0 1
0 (a) Based on bobbin coil ECT
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l i
SECONDARY SIDE MT ANTI VIBRATION BAR MAXIMUM FLAW DEI'TII PER TUBE
% D VCO SG 1 SG 2 SG 3 SG 4 TOTAL 20 - 29 %
28 22 32 30 112 30 - 39 %
9 15 13 20 57 40- 49 %
3 5
2 4
14 2 50%
1 0
0 0
1 IIOT LEG ABOVE TUBESilEET - CIRC INDICATIONS MAXIMUM FLAW DEI'TH PER TUBE
< 20ib) 6 0
0 0
6 20-29 % 09 4
0 0
0 4
Not Quantified 1
4 1
2 8
(a) Based on bobbin coil ECT (b) Based on UT l
d PRIMARY SIDE ROLL REGION - PWSCC SG 1 SG 2 SG 3 SG 4 TOTAL IIX'ATION MECHANISM 11 C
H C
H C
H C
H C
0 23 0
0 0
71 0
96 0
SKIP ROLL PWSCC 0
()
0 0
2 2
0 0
0 2
i l
f
1
,f.
E l
Location of Each Plugged Tube e
i e
o I
f i
i i
1 i
i 1
i 1
i 1
4 I
l i
,a
)
. CONNECTICUT YANKEE STEAM GENERATOR TUBES PLUGGED DURING THE SEPT 1993 OUTAGE
-OBS SGNO ROW COL REASON.
COMMENT
-1 1
6 15 H.L.' ROLL TRANSITION CRACKING 2
1 10 50 PITTING-HL ATS 3
1 13 59 PITTING-HL ATS 4
1 14 49 PITTING-HL ATS 5
l' 15 48 PITTING-HL ATS 6
1 16 44 TTS-HL REGION WASTAGE 7
1 18 60 PITTING-HL A'tS
.8 1
34 18 H.L. ROLL TRANSITION CRACKING 9
1 43 54 PITTING-HL ATSP 10 1
44 50 AVB WEAR
-11 1
47 54 DENT WITH AN INDICATION (DNI) 12 2
5 62 PITTING-HL ATS 13 2
13 39 H.L. ROLL TRANSITION CRACKING FAILED REROLL 14 2
13 45 H.L. ROLL TRANSITION CRACKING 15-2 14 52 PITTING-CL ATS 16 2
15 48 PITTING-CL ATS 17 2
17 46 TTS-HL REGION WASTAGE 18 2
18 47 TTS-HL REGION WASTAGE
'19 2
18 57 PITTING-CL ATS 20 2
19 43 TTS-HL REGION WASTAGE 21 2
19 44 TTS-HL REGION WASTAGE 22 2
32 85 PITTING-HL ATSP
- 23 2
40 38 H.L. ROLL TRANSITION CRACKING 24 3
1 92 PWSCC (C.L.)
C.L.
F-STAR <=1 INCH 25 3
2 86 PWSCC (H.L.)
H.L.
F-STAR <=1 INCH 26 3
4 91 PWSCC (H.L.)
H.L.
F-STAR <=1 INCH
-27 3
17 56 TTS-H.L REGION WASTAGE 28 2
24 88 PWSCC (C.L.)
C.L.
F-STAR <=1 INCH 29 4
1 32 H.L. ROLL TRANSITION CRACKING 30 4
1 54 H.L. ROLL TRANSITION CRACKING 31 4
1 71 H.L. ROLL TRANSITION CRACKING 32 4
1 85 H.L. ROLL TRANSITION CRACKING 33 4
1 97 H.L. ROLL TRANSITION CRACKING 34 4
11 99 H.L. ROLL TRANSITION CRACKING
'35-4 15 49 TTS-HL REGION WASTAGE 36 4
15 50 TTS-HL REGION WASTAGE 37 4
15 57 PITTING-AL ATS 38 4
17 50 H.L. ROLL TRANSITION CRACKING 39 4
48 58 H.L. ROLL TRANSITION CRACKING 4
P 4
Attachntent 3 Location of Each Plug Repair Insert (PAP) 1 r
)
Y i
P f
)
~l 1
i 1
CONNECTICUT YANKEE S/G. COLD' LEG'PAPPED PLUG LIST FOR STEAM: GENERATOR #1 PAPPED DURING 1993 (RF017)
S/G ROW-COLUMN YEAR OBS NUMBER NUMBER PLUGGED
-l' 1
2 4
1986-2 1
3 5
1986 3
1 3
70 1987 4
1 3
85 1987 5
1 3
87 1987 6
1 3
89 1987 7
1 3
92 1987 8
1 5
73 1987 9
1 5
79 1987 10 1
5 81' 1986 11-1 6
53 1986 12 1
8 19 1987 13 1
8 45 1987 14 1
a 72 1987 15 1
9 75 1986 16 1
9 79 1987.
17 1
9 81 1987 18 1
10 30 1987 19 1
11 17 1987 20 1
12 87 1987 21 1
13 76 1986 22 1
16 28 1987 23 1
18 46 1986 24 1
18 56 1987 25 1
19 38 1987-26 1
19 39 1987 27 1
19 48 1987 28 1
25 35 1987 29 1
27 23 1986 30 1
29 17 1986 31 1
30 13 1987 32 1
30 16 1987 33 1
30 17 1987 34 1
30 18 1987 l
35 1
30 21 1987 36 1
30 24 1987 37 1
30 25 1987 38 1
30 26 1987 39 1
30 27 1987 40 1
30 28 1987 41 1
30 29 1987 42 1
30 30 1987 43 1
30 31 1987 44 1
30 34 1987 45 1
30 37 1987-46 1
30 38 1987 47 1
30.
39 1987 48 1
30 40 1987 49 1
30 46 1987 50 1
30 47 1987 51 l'
34 21 1987
~
CONNECTICUT YANKEE S/G COLD LEG PAPPED PLUG LIST FOR STEAM GENERATOR (il PAPPED DUP.ING 1993 (RFO17)
S/G ROW COLUMN YEIJR OBS NUMBER NUMBER PLUGGED 52 1
34 22 1987 53 1
34 24 1987 54 1
34 25 1987 55 1
34 26 1987 56 1
34 27 1987 57 1
34 28 1987 58 1
34 3C 1987 59 1
38 25 1987 60 1
38 52 1987 61 1
38 72 1987 62 1
39 40 1987 63 1
39 46 1987 64 1
39 54 1986 65 1
41 33 1986 66 1
41 40 1987 67 1
43 45 1986 68 1
43 68 1987 69 1
45 40 1987
4 CONNECTICUT YANKEE.S/G. COLD LEG PAPPED PLUG LIST 1(
FOR' STEAM GENERATOR #2 PAPPED DURING 1993 '.(RF017)
V S/G ROW
. COLUMN YEAR OBS
. NUMBER
' NUMBER PLUGGED.
i 1
2 2
5-1986 2-2 2
47 1984 3
2 2
50 1984
{
4 2
2 51 1984 5
2 2
67 1984 6
2' 2
68 1984
)
7 2
2 83 1984 I
8 2
3 1
1984 I
l 9
2 3
5 1986 10 2
3 46 1984 11 2
3 49 1984 12 2
3 50 1984 13 2
3 51 1984 14 2
3 80 1987 15 2
3-84 1984 16 2
3 86 1984 17 2
3 100 1984 18 2
4 1
1984
+
19 2
4 2
1984 l
20 2
4 67 1984 21 2
4 93 1984 22 2
4 97 1987 23 2
4 100 1986 24 2
5 39 1986 25 2
5 68 1984 26 2
5 95 1987 27 2
5 96 1987 l
28 2
5 98 1987 29 2
5 100 1987 30 2
6 2
1987 31 2
6 68 1984 32 2
6 90 1987 33 2
6 99 1987 34 2
6 97 1987 35 2
6 98 1987 36 2
7 4
1986 i
37 2
7 88 1987-
[
38 2
7 89 1987 39 2
7 95 1986
[
40 2
7 98 1987 41 2
7 100 1984
?
42 2
8 3
1987 43 2
8 4
1987 44 2
8 18 1986 45 2
8 48 1986 j
46 2
8 60 1987 47 2
8-71 1986 48 2
9 9
1987 49 2
9-67 1986 l
50 2
9 68 1986 51
'2 9
69 1986 I
~ _ _ _
4 l
CONNECTICUT YANKEE S/G' COLD LEG PAPPED PLUG LIST' FOR S'.CIAM GENERATOR #2
{
PAPPED~DURING 1993 (RF017)
S/G ROW COLUMN YEAR OBS.
NUMBER NUMBER' PLUGGED 52 2
9 72 1986 53 2
9 73 1986 l
54 2
9 87 1984 l
55 2
9 99 1984 56 2
10 42 1987 57 2
10 66 1986-5 58 2
10 68 1987 l
59 2
10 87 1986 60 2
10 88 1987 61 2
12 43 1987 62 2
12 48 1987 f
63 2
12 49 1987 64 2
12 62 1987 65 2
12 84 1986 it 66 2
13 24 1987
(
67 2
13 42 1986 l
68 2
13 44 1986 69 2
13 46 1987 l
70 2
13 54 1984-j 71 2
13 68 1987 72 2
13 81 1984 73 2
13 93 1987 74 2
14 3
1984-75 2
14 71 1984 76 2
14 73 1986 77 2
14 75 1986l
'l 78 2
15 7
1987 79 2
15 10 1986 80 2
15 58 1986 81 2
15 64 1986 i
82 2
15 80 1984 83 2
16 50 1984 84 2
17 47 1985 85 2
17 50 1987 86 2
17 51 1986 87 2
17 60 1986 88 2
17 73 1984 89 2
17 85 1987 90 2
17 93 1987 91 2
18 17 1986 92 2
18 18 1987 93 2
18 34 1987 94 2
18 43 1986 95 2
18 44 1987 I
96 2
18 45 1986 97 2
18 46 1986 98 2
18 51 1987 99 2
18 53 198G 100 2
18 58 1984 101 2
20 45 1987 102 2
20 46 1987 e
- o CONNECTICUT. YANKEE S/GLCOLD LEG-PAPPED PLUG LIST FOR STEAM GENERATOR #2 l
PAPPED l DURING 1993. (RFO17)_
-j S/G ROW COLUMN'
-YEAR OBS NUMBER NUMBER PLUGGED
)
103.
2 20-81 1984 104 2
20 85~
1987 105 2
23 55 1984 106 2
23 74 1984 107 2
23 94 1984 108 2
24 50 1986 i
109 2
25 61-1984 110 2
26 23 1987 111 2
26 74 1984 112 2
27 46 1987 113 2
27 83 1987 H
114 2
27 91 1987 115 2
28 11 1984 116 2
29 70 1986 i
117 2
29 72 1987 1
118 2
29 73 1986 119 2
29 75 1986 120 2
29 88.
1987 121 2
30 72 1984 122 2
30 84 1984 123 2
31 53 1986 124 2
31 64 1984 125 12 31 84 1986 126 2
31 89 1986 127 2
32 68 1984 128 2
33 50 1984 129 2
33 65 1986 130 2
34 68 1986 131 2
34 69 1987 132 2
36 33 1986 133 2
36 41 1987 134 2
36 54 1984 135 2
36 61 1987 136 2
36 73 1987 137 2
37 20 1987 138 2
37 33 1986 139 2
37 73 1986 140 2
39 51 1987 141 2
39 78 1984 142 2
39 79 1984 143 2
40 25 1984 144 2
40 56 1984 145 2
41 25 1986 146 2
41 34 1984 147 2
41 49 1987 148 2
41 58 1986-149 2
42 66 1986 150 2
43 27 1984 151 2
43 73
-1984 152 2
43 74
~1986 153 2
44 59 1984 o
P-
. ~ - -
. _.~
CONNECTICUT-YANKEE'S/G_ COLD' LEG PAPPED PLUG LIST--
f FOR STEAM GENERATOR (f2 PAPPED DURING '1993 - (RFO17) i S/G ROW COLUMN YEAR' OBS NUMBER NUMBER PLUGGED 154 2
45.
57 1987 155 2
45 61 1986 156 2
47 38 1986 157 2
47 39 1987 l
158 2
47 43 1987 159 2
47 44 1987 160 2
47 45 1986 161-2 47' 48 1987 162 2
47 50 1987 163 2
47 51 1987.
164 2
48 42 1986 165 2
48 43 1986.
i 166 2
48 44 1986 167 2
48 46 1987
-i 168 2
48 47 1987 l
169 2
48 50 1987 170 2
48 51 1987 l
171 2
48 59 1986 1
l t
i
-l I
i i
. ~,
CONNECTICUT YANKEE S/G COLD LEG PAPPED PLUG LIST FOR STEAM GENERATOR #3 PAPPED DURING 1993 (RF017)
S/G ROW COLUMN YEAR OBS NUMBER NUMBER PLUGGED 1
3 1
35 1986 2
3 1
36 1986 3
3 1
45 1986 4
3 1
86 1986 5
3 1
93 1986 6
3 3
91 1986 7
3 6
29 1986 8
3 6
95 1986 9
3 7
1 1987 l
10 3
11 50 1986 11 3
11 52 1986 12 3
11 98 1986 13 3
14 55 1986 14 3
17 41 1987 15 3
19 23 1986 16 3
19 24 1986 17 3
20 22 1986 18 3
20 23 1986 j
19 3
20 24 1986 20 3
20 58 1987 21 3
21 23 1986 22 3
21 24 1986 23 3
22 27 1986 24 3
25 86 1987 25 3
31 87 1986 26 3
32 30 1986 27 3
32 31 1986 28 3
32 85 1986 29 3
32 88 1986 30 3
33 31 1986 31 3
33 47 1987 32 3
33 67 1986 33 3
33 86 1986 34 3
34 62 1987 35 3
34 77 1987 36 3
34 80 1986 37 3
34 85 1986 38 3
35 48 1987 39 3
35 75 1986 40 3
35 76 1986 41 3
35 79 1986 42 3
35 85 1986 43 3
36 39 1986 44 3
36 70 1986 45 3
36 71 1986 46 3
37 79 1986 47 3
37 80 1986 48 3
40 69 1986 t
49 3
40 70 1986 50 3
40 76 1986 51 3
42 65 1986
f CONNECTICUT YANKEE S/G COLD LEG PAPPED PLUG LIST FOR STEAM GENERATOR #3 1
PAPPED DURING 1993 (RF017) 4
)
S/G ROW COLUMN YEAR R
-OBS NUMBER NUMBER PLUGGED 52 3
42 71 1986 I
.53 3
43 31 1987 l
54 3
44 71 1986 55 3
44 72 1986 i
56 3
45 68 1986 57 3
46 65
'1986
~
58 3
47 56 1986 59 3
47 64 1986 h
4
(
1 r
I i
F
... CONNECTICUT YANKEE S/G-COLD LEG PAPPED PLUG LIST FOR STEAM GENERATOR #4-PAPPED DURING 1993 (RF017)
,-t S/G ROW COLUMN
. YEAR OBS
. NUMBER NUMBER PLUGGED 1
4 1
33 1987 2
4 1
34
'1987.
3 4
1 35 1986 4
4 1
37 1987 5
4 1
40 1987 6
4 1
44 1987 i
7 4
1 49 1987 8
4 1
51 1987 9
4 1
52 1987 4
10 4
1 59 1987 l
11 4
1 60 1987 12 4
1 63 1987 13 4
1 69 1987 14 4
1 70 1986 15 4
1 77 1987 16 4
1 88 1986 17 4
1 89 1986 18 4
2 48 1987 19 4
2 72 1987 20 4
2 88 1986 21 4
3 26 1987 22 4
3 33 1987 23 4
3 34 1987 24 4
3 40 1987 25 4
3 43 1987 26 4
3 51 1987 27 4
3 53 1987 28 4
3 54 1987 f
29 4
3 79 1987
-I 30 4
3 88 1986 i
31 4
4 32 1987 32 4
4 45 1987 33 4
4 49 1987
'I 34 4
5 44 1987 35 4
5 63 1986 36 4
5 74 1986 l
37 4
6 31 1987 i
38 4
6 49 1987 39 4
6 50 1987 40 4
6 51 1987 41 4
6 54 1986 42 4
7 41 1986 43 4
7 48 1987 44 4
8 29 1987
)
45 4
8 70
- 1987 46 4
9 50 1987 47.
4 9
52 1987 48 4
9 54 1986 49 4'
9 65 1987 50 4
10 8
1987 51 4
10 24 1987
CONNECTICUT' YANKEE S/G COLD--LEG PAPPED PLUG LIST FOR STEAM GENERATOR #4 PAPPED DURING 1993 (RF017)
I S/G.
ROW COLUMN YEAR OBS NUMBER NUMBER PLUGGED i
52 4
10 25
'1987' 53 4
10 32 1987 54 4
10
-33 1987 55 4
10 37 1987 56 4
10 38 1987 57 4
10 39 1987 58 4
10 58 1987 59 4
10 59 1987 60 4
10 64 1987 61 4
10 65 1987 62 4
10 68 1987-63 4
10 69 1987 I
64 4
10 70 1987 65 4
10 71 1987 66 4
10 72 1987 67 4
10 73 1987 68 4
10 74 1987 69 4
10 75 1987 70 4
10 77 1987 71 4
10 78 1984 j
72 4
10 86-1987 i
73 4
10 88 1986 l
74 4
10 89 1986
~
75 4
11 32 1987 76 4
11 33 1987
'i 77 4
11 34 1987 78 4
11 35 1987 79 4
11 38 1987 j
80 4
11 41 1987 i
81 4
11 42 1987 82 4
11 47 1987 83 4
11 48 1987
.l 84 4
11 49 1986 l
85 4
11 50 _
1987 86 4
11 51 1987 i
s 87 4
11 52 1987 88 4
11 54 1987 89 4
11 56 1986 i
90 4
11 64 1986 91 4
11 69 1987 l
92 4
11 86 1987 t
93 4
11 88 1986 94 4
11 89 1986 l
95 4
12 19-1987 l
96 4
12 44 1987 l
97 4
12 48 1987 98 4
12 58 1987 99 4
12 65 1987 l
100 4
12 71 1987 101 4
12 81 1987 102 4
12 88 1986 i
y
.,,m.
~.
i i
CONNECTICUT YANKEE S/G COLD LEG PAPPED PLUG LIST i
FOR ST2AM GENERATOR #4 PAPPED DURING 1993 (RF017)
S/G ROW COLUMN-YEAR OBS NUMBER NUMBER PLUGGED I
103 4
12
'89 1986 104 4
13 44 1987 105 4
13 49 1991 106 4
13 50 1987 J
107 4
14 31 1987 108 4
14 46 1986 l
109 4
14 48 1987 110 4
14 49 1987 111 4
14 50 1987 112
-4 14 52 1987 113 4
15 41 1986 114 4
15 43 1986 115 4
15 44 1967 l
116 4
15 45 1986 l
117 4
15 51 1987 118 4
15 53 1986 119 4
16 61 1986 120 4
16 85 1986 121 4
17 51 1987 122 4
17 55 1987 123 4
17 56 1986 124 4
17 57 1986 125 4
17 64 1987 12e 4
17 76 1987 127 4
17 85 1986 i
128 4
18 39 1987 l
129 4
18 50 1987-130 4
18-55 1987 131 4
19 35 1987 132 4
19 40 1987 l
133 4
19 45 1986 134 4
19 48 1987 135 4
19 49 1987 136 4
19 50 1987 137 4
19 51 1987 138 4
19 52 1987 139 4
20 48 1987 140 4
20 50 1986 141 4
20 51 1987 142 4
20 66 1986 143 4
20 88 1986 144 4
20 89 1986 145 4
21 32 1987 146 4
21 39 1987 4
147 4
21 50 1987 148 4
21 51 1987 149 4
21 53 1987 150 4
21 69 1987 151 4
21 88 1986 152 4
21 89 1986 153 4
22 33 1987
,,r+-
m m
CONNECTICUT YANKEE.S/G: COLD LEG.PAPPED PLUG LIST FOR STEAM GENERATOR #4 PAPPED DURING 1993 (RF017)'
s/G ROW COLUMN YEAR OBS NUMBER NUMBER PLUGGED 154
~
4.
23 33 1987' 155 4
23 38 1987 156 4
23 40 1987 157 4
23 45 1987 I
'158 4
23 48 1987 159 4
23 49 1986 160 4
23 50 1987 161 4
23 53 1986 162 4
23 75 1987 163 4
24 36 1987 164 4
24-37 1986 165 4
24 49 1986 166 4
24 51 1987 167 4
25 49 1986 168 4
25 53 1987 169 4
25 67 1986 170 4
26 36 1987 1
171 4
26 62 1987 172 4
27 33 1987 173 4
27 35 1987 174 4
27 36 1987 175 4
27 39
-1987 176 4
27 41 1987 177 4
27 42 1987 178 4
27 43 1987 179 4
27 47 1987 180 4
27.
48 1987.
181 4
28 50 1987 182 4
28 51 1987 183 4
28 75 1987 184 4
28 89 1986 185 4
28 91 1986 186 4
29 36 1987
-j 187 4
29 40 1987 188 4
29 65 1987 g
189 4
29 88 1986 190 4
29 89 1986 l
191 4
29 90 1986 192 4
30 16 1987 l
193 4
30 34 1987 194 4
30 49 1987 195 4
30 50 1987 196 4
30 52 1987 197 4
30 54 1986 198 4
30 55 1986 l
199 4.
30 56 1986 200 4
30 57 1987 201 4
30-58 1987 202 4
30 60 1987 203 4
30-61 1987 204 4
30 62 1987 n
~-
m e
.... =
l CONNECTICUT YANKEE S/G COLD LEG PAPPED PLUG LIST FOR STEAM GENERATOR #4'
.i PAPPED DURING 1993-(RF017)
L S/G ROW COLUMN YEAR.
-r 1"
OBS NUMBER NUMBER PLUGGED r
205 4
30 63 1987-206 4
30 64 1987 207 4
30 65 1987 208 4
30 66 1987 j
209 4
30 67 1987 210 4
30 68 1987-211 4
30 69 1987 212 4
30 70 1987 213 4
30 71 1987 214 4
30 74 1987 215 4
30 75 1987 E
216 4
30 76 1987 217 4
30 77 1987 l
218 4
30 79 1986 239 4
30 80 1987 l
220 4
30 81 1987 221 4
30 83 1987 l
222 4
30 88 1987 223 4
30 89 1986 224 4
31 16 1986 225 4
33 28 1986 226 4
33 50 1987 227 4
33 64 1987 I
228 4
33 82
-1987-229 4
34 27 1987 230 4
34 80 1987 231 4
34 81 1987 232 4
34 82 1987 233 4
34 85 1987 234 4
35 16 1987 235 4
35 74 1987 236 4
36 48 1987 i
237 4
36 55 1987
{
238 4
37 60 1987
)
239 4
37 74 1987 240 4
38 74 1986 241 4
39 57 1987 242 4
39 58 1986 243 4
39 64 1987 244 4
39 65 1987 245 4
39 69 1987 246 4
40 34 1987 247 4
40 73 1987 248 4
41 30 1986--
249 4
41 36 1987 250 4
41 38 1987 251 4
41 40 1987 252 4
41 52 1987 253 4
41 62 1987 4
254-4 41 64 1987 255 4
41 72 1987
CONNECTICUT YANKEE'S/G COLD LEG PAPPED PLUG LIST' FOR STEAM GENERATOR #4 PAPPED DURING 1993 (RF017)
~
S/G ROW COLUMN YEAR OBS NUMBER NUMBER PLUGGED
.l 256.
4 43 63 1987 l
257 4
43 64 1987 258 4
43 68 1986 259 4
43 69 1986 260 4
43 71 1987 261 4
45 50 1987 l
262 4
45 51 1987
{
263 4
45 52 1987 1
264 4
45 59 1987 l
265 4
45 60 1987 266 4
45 61 1987 267 4
45 63 1986 i
268 4
45 64 1987 i
269 4
45 65 1987 270 4
45 66 1987 271 4
45 68 1987 i
272 4
45 69 1987
)
273 4
46 58 1987 274 4
46 60 1987 275 4
46 64 1987 i
276 4
46 65 1986 l
277 4
46 66 1987'
'j 278 4
47 37 1987 279 4
47 40 1987 j
280 4
47 41 1987 281 4
47 43 1987 282 4
47 44 1987 283 4
47 47 1986 284 4
48 41 1986 1
285 4
48 43 1986 j
286 4
48 44 1987 287 4
48 45 1986 i
288 4
48 46 1986 289 4
48 47 1987 290 4
48 48 1987 291 4
48 53 1986
+
Location of Repaired Tubes I
1
.i CONNECTICUT YANKEE STEAM GENERATOR TUBES ROLL EXPANDED RFO17 (1993)
OBS SGNO ROW COLUMN 1
2 6
91 2
2 6
92 3
2 7
64 4
2 10 90 5
2 13 86-i 6
2 14 90
- l 7
2 17 81'
-l 8
2 17 82 l
9 2
19.
80
)
10 2
19 81 11 2
19 87 i
12 2
19 90 13 2
20 86 l
14 2
27 85 15 2
31 88 16 2
32 84 i
17 2
34 81 i
18 2
34 85 19 2
35 84 20 2
44 66 1"
21 4
2 99 22 4
3 42 23 4
5 42 24 4
6 30 25 4
6 40 26 4
6 43 l
27 4
6 44 l
28 4
7 98 29 4
10 30 30 4
10 36 31 4
10 47 32 4
10 61 33 4
10 62 1
34 4
11 30 35 4
11 39 36 4
11 61 3
37 4
12 32 38 4
13 9
l 39 4
13 78 I
40 4
14 33 l
41 4
14 38 42 4
15 31 43 4
16 38 44 4
18 32 l
45-4 19 72 46 4
21 10 l
47 4
21 30 i
48 4
21 31 i
49 4
21 35 50 4
21 36 l
51 4
21 37
{
52 4
22 32
. +.
~
CONNECTICUT YANKEE STEAM GENERATOR TUBES ROLL EXPANDED
.c RF017.(1993)
OBS SGNO ROW COLUMN 53 4
23 31 54 4
23 32 55 4
23 34 56 4
23 35 57 4
23 37 58 4
23 47 59 4
24 34 60 4
26 38 61 4
27 31 62 4
28 36 63 4
28 38 64 4
28 69 65 4
30 30 66 4
30 33 67 4
32 35 68 4
33 52 69 4
33 68 70 4
33 75 71 4
33 76 72 4
34 54 73 4'
'35 31 74 4
35 32 75 4
35 40 76 4
35 65 77 4
36 31 78 4
40 32 i
79 4
43 51 80 4
43 62 81 4
44 58 l
82 4
44 64 83 4
45 67 q
i t
I
__m-____
-