ML20205R525
| ML20205R525 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 03/25/1999 |
| From: | Affolter R UNION ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| ULNRC-3993, NUDOCS 9904230071 | |
| Download: ML20205R525 (17) | |
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March 25,1999 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Stop Pl-137 Washington, DC 20555-0001 ULNRC-3993 Gentlemen:
DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 FACILITY OPERATING LICENSE NPF-30 SPECIAL REPORT 98-03 RESULTS OF TIIE TENTH STEAM GENERATOR TUBE IN-SERVICE INSPECTION I
t ll The enclosed Special Report is submitted pursuant to the requirements of Callaway Technical Specification 4.4.5.5.b concerning the Inservice Inspection of Callaway's
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Steam Generators performed in April,1998 during Callaway Plant's ninth refueling outage. This report documents the final Steam Generator inspection results.
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R. D. Affolter i
Manager, Callaway Plant A' j//
RDA/IIDBffWP/ GAG Enclosure 9904230071 990325 PDR MDOCK 05000483 p
PDR N
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ULNRC-3993 Page 2 cc:
U. S. Nuclear Regulatory Commission (Original and I copy)
, Attn: Document Control Desk Mail Stop PI-137 Washington, DC 20555-0001 Mr. Ellis W. Merschoff Regional Administrator U.S. Nuclear Regulatory Commission Region IV 6i) Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 Senior Resident inspector Callaway Res.* dent Office U.S. Nuclear Reculatory Commission 8201 NRC Road Steedman,MO 65077 Mr. Melvin K. Gray (2 copies)
Licensing Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 13E16 Washington, DC 20555-2738
. Manager, Electric Department Missouri Public Service Commission PO Box 360 Jefferson City, MO 65102 Deputy Director Department of Natural Resources PO Box 176 Jefferson City, MO 65102 Superintendent, Licensing Wolf Creek Nuclear Operating Corporation PO Box 411 -
Burlington,KS 66839 k
ULNRC-3993 l
Page1of15 SPECIAL REPORT 98-03 RESULTS OF TENTH STEAM GENERATOR TUBE IN-SERVICE INSPECTION INSPECTION REOUIREMENTS:
This report is submitted in accordance with Technical Specification (T/S) 4.4.5.5.b, which states:
The complete results of the steam generator tube inservice inspection shall be submitted to the Commission in a Special Report pursuant to Specification 6.9.2 within 12 months following the completic,a of the inspection. This Special Report shall include:
- 1) Number and extent of tubes and sleeves inspected,
- 2) Location and percent of wall-thickness penetration for each indication of an imperfection, and
'3) Identification of tubes plugged or repaired.
INSPECTION REPORT:
In April 1998, with the plant in Mode 6 for the ninth refueling outage, the tenth Steam Generator (S/G) Eddy Current Inservice Inspection was performed by Westinghouse Electric Corporation. The final results of this inspection are summarized below and are numbered to correspond with the information requested by T/S 4.4.5.5.b:
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ULNRC-3993 Page 2 of 15 (1)
Number / Extent ofInspected Tubes and Sleeves Table 1 below shows the scope of the eddy current inspections performed during Refuel 9 at the Callaway Plant. As bu n in this table, eddy current inspections were performed on 100% of the tubes in Steam Generators B and C using the standard bobbin coil probe, and eddy current inspections were performed on 100% of the top of tubesheet (hot leg) on all four steam generators using a PlusPoint RPC probe. Additionally, eddy current inspections were performed on the Row I U-bends in Steam Generator A using a PlusPoint RPC probe.
Table 1 Eddy Current inspection Program Summary
{
l Work Scope S/G A S/G B S/G C S/G D Bobbin coil, full length 0
5589 5562 0
+ Point RPC, top of tubesheet, 5531 5589 5529 5549 hot leg - +2"/-3"
+ Point, RPC, U-bend 121 0
0 0
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'ULNRC-3993 Page 3 of15 l-(2) Location / Percent of Wall-Thickness Penetration for Each Indication of Imperfection l
See Tables 2,3,4, and 5 on the following pages for steam generator tube
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imperfections found during the eddy current inspection during Refuel 9. The
' imperfections listed in these tables are those showing 20% or greater tube wall thinning. The key below provides a description of the abbreviations used in these tables:
TABLES 2.3.4. AND 5 KEY AV1,2,3,4,5,6 - Anti-Vibration Bars 0211,0711,07C, etc. - Tube Support Plate Numbers / Cold Leg (C), liot Leg (H)
TSil - Tubesheet liot Leg SAI-Single AxialIndication MAI - Multiple Axial Indication SCI - Single Circumferential Indication MCI - Multiple Circumferential Indication SVI - Single Volumetric Indication MVI - Multiple Volumetric Indication l
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ULNRC-3993 Page 4 of 15 TABLE 2 i
TUBE IMPERFECTIONS - STEAM GENERATOR 'A' INDICATION %
INCH (+) FROM M
COLUMN WALL THINNING LOCATION LOCATION 21 25 SCI TSH
-0.04 18 26 SAI TSH
+0.05 21 37 SCI TSH
-4.92 27 38 SCI TSH
-1.11 21 42 SCI TSH
-0.42 18 46 SCI TSH
-0.14 17 49 SAI TSH
+0.04 12 53 SCI TSH
-0.05 19 55 SCI TSH
+0.11 21 56 sal TSH
+0.16 13 57 sal TSH
+0.09 21 58 SCI TSH
+0.16 14 59 SCI TSH 0.00 39 59 MAI TSH
-0.01 30 60 SCI TSH
-0.11 46 60 SAI TSH
+0.01 30 62 SCI TSH
-0.04 29 65 sal TSH
+0.02 36 65 SCI TSH
-0.05 32 68 sal TSH
+0.08 13 70 sal TSH
+0.12 15 70 SCI TSH
-0.08 22 70 MCI TSH
+0.04 11 79 SAI TSH
+0.07 32 79 sal TSH 0.00 l
40 80 SAI TSH
+0.01 19 82 SAI TSH
+0.08 30 83 SCI TSH.
0.00 4I 88
$Al TSH
-0.05 38 90 SCI -
TSH 0.00 35 99 sal TSH
+0.05 15.
114 SCI TSH
+0.03 l
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ULNRC-3993
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TABLE 3 IUBf1MPIBEECIlQNS - STEAM GENERATOR *B' l
INDICATION %
INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 37 20
'40 AV4 0.00 50 47 42 AV5 0.00 12 58 sal TSH
+0.09 54 67 43 AV2 0.00 28 8
26 AV6 0.00 29 9
37
'AV5 0.00 30 10 23-AV2
-0.12 32.
11 33 AV6
-0.25 32 12 27 AV4 0.00 33 12 23 AV3-0.00 32 13 21 AV5
-0.17 33 14 26 AVS
-0.20 4
37 18 36 AV2
-0.14 37
'18 37 AV3
-0.11 39 18 21-AV2
-0.09 39 18 34 AV4
-0.03 36 19 22 AV3 0.00 37 19 28 AV4 0.00 37 20 21 AV2 0.00 37 20-40 AV4 0.00 42-23 21 AV3
-0.03 42 23 21 AV4 0.00 42 24 21 AV3-
+0.03 42 24 34 AV4
-0.11 42 24 29 AV5
-0.31 45 24 27 AV5
-0.06 42 25 22 AV4
-0.17 50 28 27 AV5 0.02 41 30
-24 AV2
-0.09 42 30 25 AV3
-0.03 42 30 21 AV4
-0.17 43 30 28 AV3
+ 12.55 49 31 24 AV2
-0.06 49 31 28 AV5
-0.20 39.
32 24 AV2
+0.40 39 33 23 AV2
-0.19
'40 35 25 AV5
+0.25
'26 43 21 AV2 0.00 26 43 24 AV6 0.00 35 43 34 AV3 0.00 l
ULNRC-3993 Page 6 of 15 TABLE 3 TUBE IMPERFECTIONS - STEAM GENERATOR 'B' INDICATION %
INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 35 43 24 AV5
-0.28 26 45 26 AVI
+0.23 26 45 24 AV6
+0.03 35 45 31 AV3
+0.03
'47 45 34 AV3
+0.03 47 45 27 AV4
+0.03 50 47 37 AV3
-0.28 50 47 33 AV4
-0.08 50 47 42 AV5 0.00 50 47 25 AV6
-0.36 50 53 30 AV4 0.00 43 57 22 AV3 0.00 50 58 26 AV2 0.00 47 59 25 AV2 0.00 47 59 22 AV3 0.00 47 59 37 AV4 0.00 54 61 31 AV2 0.00 47 63 26 AV2 0.00 40 64 35 AV3
-0.40 40 64 25 AV4
+0.30 26 65 23 AV2
+0.03 26 65 33 AV5 0.00 46 66 26 AV4 0.00 47 66 24 AV2 0.00 47 66 29 AV4 0.00 54 67 43 AV2 0.00 54 67 24 AV3 0.00 54 67 30 AV4 0.00 54 67 25 AVS
+0.11 42 68 30 AV2
+0.03 42 68 30 AV3
+0.20 42 68 22 AV4
-0.08
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42 68 30 AV5
+0.03 1
42 68 27 AV6 0.17 47 69 21 AV2 0.00 i
55 71 27 AV4
-0.08 55
. 71 26 AV5
-0.30 50 72 21 AV3
-0.06 41 74 38 AV4
+0.08
/'
74 38 AV5
+ 1.32
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ULNRC-3993 -
Page 7 of 15 TABLE 3 IMBfdMPEREECILQN_S - STEAM GENERATOR 'B' INDICATION %
INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 49 75 21 AV2
-0.54 37 76 28 AV3
-0.31 37 76 31 AV4
+0.08 39 79 25 AV3
-0.06 39 79 24 AV4
+0.14 35 82 30 AV3 0.00 40 83 29 AV4
-0.19 40 83~
21 AV5
-0.11 42 85 21 AV4
-0.11 43 85 24 AV3
+0.03 46 86 33 AV3 0.00 46 86 24 AV4
+0.08 50 86 33 AV4
+0.19 50 86 36 AVS
+0.03 46 88 23 AV2
-0.14 40 89 24 AV2 0.00 40 89 33 AV3 0.00 40 89 30 AV5 0.00 42 90 35 AV4 0.00 46 91 31 AV2
-0.03 46 91 33 AV4
-0.14 49 93 24 AV3 0.00 42 98 33 AV3 0.00 42 98 32 AVS 0.00 44 98 22 AV4 0.00 44 98 26 AVS 0.00 44 98 21 AV6 0.00 46 98 21 AV3 0.00 46 98 27 AV4 0.00' 48 98 33 AV4
+0.06 42 99 23 AV5 0.00 41 100 30 AV5 0.00 42 103 31 AV5
.0.00 34-110 24 AV3 0.00 32 112 22 AV5 0.00 30 113 21 AV5' O.00 30 114 21 AV1 0.00 l.
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ULNRC-3993 Page 8 of15 l
TABLE 4 I
TUBE IMPERFECTIONS - STEAM GENERATOR 'C' INDICATION %
INCH (+) FROM ROW CQLUMN WALL THINNING LOCATION 1.OCMIQt!
28 11 SCI TSH
+0.09 27.
13 SCI TSH
+0.09 20 17 SAI TSH
+0.10 23-18 SAI TSH
+0.02 -
31 19 SCI TSH
+0.08 42 21 SVI TSH
+0.05 22 24 SCI TSH
+0.01 31 24 SCI TSH
+0.01 46 37 41 AV4 0.00 50 45 46 AV4 0.00 19 46 SCI TSH
+0.10 51 46 SCI TSH
+0.10 12 47 SAI TSH
+0.12 49 48 40 AV3 0.00 12 50 SCI TSH 0.00 14 51 SAI TSH
+0.13 52 51 SCI TSH
-0.02 11 53-SAI TSH
+0.52 31 53 SCI TSH
+0.10 11 57 SAI TSH
+0.60 12 57-SAI TSH
+0.48 12 59 MAI TSH
+0.33 30 60 SCI TSH
-0.01 40 70 SCI TSH 0.00 48 71 SCI TSH
+0.11 16 76 SCI TSH
-2.51 47 79 SCI TSH
+0.06 47 91 41 AV4 0.00 43 92 47 AV4 0.00 50 92 SCI TSH
-0.04 22 99 SA!
TSH
+0.08 44 100 43 AV5 0.00 41 105 51 AV5 0.00 13 107-SCI TSa
+0.05
.32 109 43 AV5 0.00 30 114 50 AV5 0.00 24 6
26 AVI 0.00.
27.
8-27 AVI 0.00-20 8
34 AVI
+0.17 I
28 8
33 AVI
-0.11 I
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ULNRC-3993 Page 9 of 15 l
TABLE 4 IQSE IMPERFECTIONS - STEAM GENERATOR 'C' IND! CATION %
INCH (+) FROM RQyy COLUMN WALL THINNING LOCATION LOCATION 28 9
21 AV5 0.00 29 9
21 AVS 0.00
- 30 12 26 AVS 0.00 34 15 39 AV2 0.00 37 15 22 AV5 0.00 35 16 29 AV1
+0.08 36 16 22 AV3
+0.14 36 16 23 AV4 0.00 36 18' 34 AV4 0.00
)
40 18 28 AV2
+0.03 37 19 31 AV3 0.00 40 20 31 AV4 0.00
.50 28 32
'AV5 0.00 50 28 29 AV6 0.00 39 29 26 AV2 0.00 46 29 31 AV4 0.00 I
42 33 28 AV2
+0.08 36 35 23 AV3 0.00 46 35 23 AV2 0.00 46 35 21 AV3 0.00 46 35 24 AV4 0.00 40 37 29 AV3
-0.03 40 37 25-AV4
+0.06 46 37 32 AV2 0.00 46 37 24 AV3
+0.14 46 37.
41 AV4
+0.44 27 39 22 AVI 0.00 27 39 34 AV5
+0.08 46 39 21 AV2 0.00 45 41 22 AV2 0.00 45 41 31 AV4 0.00 46 41 23 AV2 0.00 46 42 24 AV3 0.00 40 -
43 23 AV2 0.00 35 44 23 AV3 0.00 50 45 40 AV2 0.00 50 45 45 AV3 0.00 50 45 46 AV4 0.00 l
24 46 22 AV6 0.00 l.
40 46 24 AV3 0.00
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w ULNRC-3993 Page 10 of 15 TABLE 4 TUBE IMPERFECTICNS - STEAM GENERATOR 'C' l
lNDICATION %
INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 49 48 40 AV3 0.00 49 48 23 AV4
+0.22 36 52 29 AV2 0.00 36 52 23 AV4 0.0u 36 54 28 AV3 0.00 37 56 22 AV3 0.09 37 59 28 AV3 0.00 49 61 22 AV5 0.00 32 62 21 AV2 0.00 18 63 26 AV5 0.00 49 63 23 AV2 0.00 49 63 27 AV4 0.00 49 63 23 AV5 0.00 45 64 26 AV5
+0.17 48 64 23 AV5
-0.03 44 71 25 AV3
-0.14 44 71 36 AV4 0.00 44 71 38 AV5 0.00 44 71 25 AV6
+0.03 41 79 22 AV6 0.00 36 80 23 AV4 0.00 41 81 28 AV3 0.00
'41 81 28 AV4 0.00 41 81 22 AVS 0.00 42 82-22 AV4 0.00 29 84 27 AV2 0.00 48 85.
24 AV3 0.00 41 87 23 AV2 0.00 41 87 25 AV3 0.00 41 87 25 AV4 0.00 41 87 24 AV6
+0.22 47 87 26 AV2 0.00 47 87 28 AVS 0.00 41 88 21 AV4 0.00 48 89 21 AV4
+0.16 48 89 28 AV5
+0.19 46 90 21 AV3 0.00 46 90 32 AV4 0.00 53 90 34 AV5 0.00 47 91 25 AV2 0.00 I
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ULNRC-3993 Page 11 of 15 TABLE 4 TUBE IMPERFECTIONS - STEAM GENERATOR 'C' INDICATION %
INCH (+) FROM M
COLUMN WALL THINNING LOCATION LOCATION 47 91 23 AV3 0.00 47 91 41 AV4 0.00 47 91 28 AVS 0.00 43 92 33 AV3
+0.17 43 92 47 AV4 0.00 43 92 25 AV5
+0.06 i
46 93 27 AV3 0.00 47 93 25-AV2 0.00 47 93 28 AV3 0.00 47 93 27 AV4
+0.08 47 93 38 AV5 0.00
)
47 93 23 AV6 0.00 49 93 27 AV4 0.00 49 93 32 AV5 0.00 51 93 21 AV4 0.00 43 94 23 AVI 0.00 43 94 23 AV2 0.00 43 94 31 AV3 0.00 43 94 36 AV4 0.00 43 94 23 AV6 0.00 49 95 34 AV4 0.00 49 95 25 AV5 0.00 42 96 23 AV2
+0.09 42 96 31 AV5 0.00 45 97 25 AV6
+0.06 40 100 36 AVS 0.00 44 100 43 AV5 0.00 40 103 26 AV2 0.00 40 103 33 AV5 0.00 43 103 21 AV4 0.00 43 103 27 AV5 0.00 43 103 29 AV6 0.00
'39 105 27 AV3 0.00 39~
105 33 AV4 0.00 39.
105 26 AV5 0.00 41 105 42 AV4 0.00 41 105 51 AV5 0.00 41 105 28 AV6 0.00 14 106 21 AV1 0.00 35 107 21 AV4 0.00 J
ULNRC-3993 Page 12 of15 TABLE 4 IllBE IMPERFECTIONS - STEAM GEBERATOR 'C' INDICATION %
INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 32 109 43 AV5 0.00 32 110 29 AV5 0.00 32 110 21 AV6 0.00 33 110 34 AV4 0.00 36 110 32 AV4 0.00 32 111 21 AV2
+ 10.27 32 111 21 AV3
-0.03 33 111 23 AV4 0.00 33 111 26 AV6 0.00 30 113 24 AV5 0.00 30 114 39 AV2 0.00 30 114 50 AVS 0.00 i
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ULNRC-3993 Page 13 of 15 TABLES TUBE IMPERFECTIONS - STEA4 GENERATOR 'D' INDICATION %
INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 28 45 SCI TSH
-4.76 24 59 SCI TSH
-3.64 17 61 SCI TSH 0.00 13 102 SCI TSH
-4.20 21 116 SCI TSH 0.04
i ULNRC-3993 Page 14 of 15 (3)
Identification of Tubes Plugged or Repaired Table 6 STEAM GENERATOR TUBES PLUGGED DURING REFUEL 9 S/G A S/G B S/G C S/G D ROW COL ROW COL ROW COL ROW COL 21 25 37 20 28 11 28 45 18 26 50 47 27 13 24 59 21 37 12 58 20 17 17 61 27 38 54 67 23 18 13 102 21 42 31 19 21 116 18 46 42 21 17 49 22 24 l
12 53 31 24 l
19 55 46 37
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21 56 50 45 l
13 57 19 46 l
21 58 51 46 14 59 12 47 39 59 49 48 30 60 12 50 46 60 14 51 1
30 62 52 51 l
29 65 11 53 36 65 31 53 32 68 11 57 13 70 12 57 15 70 12 59 l
22 70 30 60 l
11-79 40 70 32 79 48 71 40 80 16 76 19 82 47 79 30 83 47 91 41 88 43 92 l
38 90 SG 92 35 99 22 99 15 114 44 100 41 105 13 107 32 109 30 114 i
ULNRC-3993 Page 15 of15 l
Table 7
__ STEAM GENERATOR CUMULATIVE TUBE PLUGS 1
l-PERIOD S/G A -
S/G B S/G C S/G D TOTAL
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Previous -
51 37 64 77 229 Refuel 9 -
32 4
36 5
77 TOTAL 83-41 100 82 306 j'
No tubes were sleeved during Refuel 9.
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