ML20235L586
| ML20235L586 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 07/10/1987 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| 87-356, NUDOCS 8707160753 | |
| Download: ML20235L586 (22) | |
Text
...
VIRGINIA EtscrHIC ANI) Powtut COMPANY HIcnMOND,VIHOINIA 2 3 2 61 W.L.STHWANT V3('E PNEMIDENT N e C1.E A M O P E uario""
July 10, 1987 United States Nuclear Regulatory Commission Serial No.87-356 Attention: Document Control Desk N0/ISI Washington, D.C.
20555 Docket No. 50-338 License No. NPF-4 Gentlemen:
l VIRGINIA ELECTRIC AND POWER COMPANY l
NORTH ANNA POWER STATION UNIT 1 1
STEAM GENERATOR TUBE PLUGGING REPORT l
l Enclosed is the Steam Generator Tube Plugging Report required by Technical Specification 4.4.5.5.a.
This is a summary of tubes plugged as a result of the inspection performed during the recently completed Unit 1 l
refueling outage.
Should you require additional information, the complete report will be maintained on file at North Anna Power Station and the corporate office.
i Very truly yours, l
l rs i
3 W. L. Stewart
Enclosure:
Virginia Electric and Power Company North Anna Power Station Unit 1 Steam Generator Tube Plugging Report Refueling Outage - May/ June, 1987 l
1 gO 87071607D3 070710 i
l PDR ADDCK 05000330 0
PDR t
cc:
U. S. Nuclear Regulatory Commission 101 Marietta Street, N.W.
Suite 2900 Atlanta, GA 30323 Mr. J. L. Caldwell NRC Senior Resident Inspector North Anna Power Station j
- l..
1 1
ENCLOSURE VIRGINIA ELECTRIC AND POWER COMPANY j
l NORTH ANNA POWER STATION UNIT 1 1
I STEAM GENERATOR TUBE PLUGGING REPORT REFUELING OUTAGE - MAY/ JUNE, 1987 l
1 k______________________________________-.________________
Steam Generator Examination Virginia Electric and Power Company North Anna Power Station Unit No. 1 Steam Generator's A, B, & C 1987 Refueling Outage Tubes Plugged Summary The attached tables list the tubes plugged in North Anna Unit 1,
during the 1987 refueling outage.
For tubes with more than one type of indication, the reason for plugging the tube was determined based on the most severe indication type as follows in decreasing order of severity:
clear indications and leaking tubes, distorted indications and tube sheet indications.
Table No. 1:
Total number of tubes plugged during the 1987 refueling outage in Steam Generator A by indication type.
Table No. 2:
Total number of tubes plugged during the 1987 refueling outage in Steam Generator B by indication type.
Table No. 3:
Total number of tubes plugged during the 1987 refueling outage in Steam Generator C by indication type.
The attached plots indicate tubes out of service for each steam generator:
Plot No. 1:
Indicates location of tubes out of service prior to the 1987 refueling outage.
Plot No. 2:
Indicates location of tubes taken out of service during the 1987 refueling outage.
Plot No. 3:
Indicates location of tubes out of service following the 1987 outage.
l l
1 l
1 J
Table No. 1: Total number of tubes plugged during the 1987 refueling outage in Steam Generator A by indication type.
1.
Clear Indications and Leaking Tubes (25)
Row Column Row Column 6
9 6
56 l
5 12 5
57 10 13 6
58 11 14 3
59 6
15 4
59 9
19 4
67 i
10 20 18 71 l
14 21 5
73 9
22 9
73 j
10 22 27 81 l
16 50 11 83 3
52 3
91 7
54 l
l l
2.
Distorted Indications (43) l Row Column Row Column 12 2
8 32 2
11 18 33 l
4 12 12 36 l
10 12 23 38 2
13 19 41 5
13 3
44 15 13 2
51 i
7 14 28 53 3
15 4
55 10 15 15 55 9
16 28 55 19 17 2
56 9
18 7
57 6
21 27 57 7
21 10 60 5
23 11 64 11 24 14 64 5
25 6
65 3
26 6
67 12 28 18 70 17 80 10 82 15 85 l
i Table No. 1 (Continued): Total number of tubes plugged during the 1987 refueling outage in Steam Generator A by indication type.
3.
Tubesheet Indications (15)
Row Column Row Column 11 2
21 35 15 3
18 36*
3 17 20 36 17 21 20 37 21 25 14 60 19 27 5
75 17 31*
4 78 18 34
- Pulled Tubes 4.
Total Number of Tubes Plugged in Steam Generator A - 83
Table No. 2: Total number of tubes plugged during the 1987 refueling outage in Steam Generator B by indication type.
- 1. Clear Indications and Leaking Tubes (14)
Row Column Row Column 4
23 2
66 3
27 11 70*
20 32 11 71 20 38 2
72 5
39 3
72 26 45*
37 72 38 52 18 75
- Leaking Tubes 2.
Distorted Indications (37)
Row Column Row Column 12 2
19 32 4
7 20 38 3
8 9
40 4
9 14 40 7
9 23 41 8
10 3
42 3
12 15 44 5
23 25 44 6
23 11 47 I
5 25 12 47 i
14 25 11 49 l
20 30 11 50 12 31 2
55 19 31 15 55 26 31 6
57 6
59 31 66 6
68 2
69 35 73 2
75 2
83 29 84
i Table No. 2 (Continued):
Total number of tubes plugged during the 1987 refueling outage in Steam Generator B by indication type.
3.
Tubesheet Indications (11)
Row Column Row Column 16 33 38 68 j
35 34 39 68 l
25 49 10 69 35 59 7
71 29 64 30 65 41 66 j
i 4.
Total Number of Tubes Plugged in Steam Generator B - 62 l
1 I
l l
b l
Table No. 3: Total number of tubes plugged during the 1987 refueling outage in Steam Generator C by indication type, i
I 1.
Clear Indications and Leaking Tubes (30)
Row Column Row Column 4
4 2
38
)
4 6*
2 39 22 7
3 43 11 10 17 40 4
8 11 31 47*
j 3
13 2
50*
l 5
13 5
55 5
19 24 58 4
20 31 60 9
22 3
62 8
23 8
64 12 24 8
67 2
26*
9 69 3
28 33 72 31 37 7
79
- Leaking Tubes 2.
Distorted Indications (78)
Row Column Row Column It 3g Column j
3 4
6 23 39 41 9
4 12 23 2
42 9
5 2
25 13 42 11 5
3 26 2
43 I
11 6
23 26 32 45 6
7 15 28 24 46 7
8 13 31 26 46 5
9 11 33 16 48 6
11 5
34 20 48 9
13 2
36 13 49 8
15 23 36 23 49 11 15 23 37 35 49 6
17 35 38 23 51 4
18 38 38 14 52 l
6 18 14 39 5
54 24 18 24 39 21 54 12 20 26 39 5
55 15 20 21 40 4
56 2
21 13 41 5
56 19 21 18 41 8
56 20 21 19 41 23 56 4
22 8
60 9
59 2
60 31 65 4
62 6
62 6
84 5
67 6
72 7
89 7
84 2
86 7
91 11 89 6
91
Table No. 3 (Continued): Total number of tubes plugged during the 1987 refueling outage in Steam Generator C by indication type.
3.
Tubesheet Indications (9)
Row Column l
24 8
5 15 31 48 17 54 6
74 1
7 74 8
74 8
75 25 78 1
l l
4.
Tube Erroneously Plugged having no Pluggable or Potential Pluggable Indication (1)
Row Column 6
22 5.
Total number of Tubes Plugged in Steam Generator C - 118 i
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