ML20205Q775
| ML20205Q775 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 04/16/1999 |
| From: | Affolter R UNION ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| ULNRC-3993, NUDOCS 9904220065 | |
| Download: ML20205Q775 (15) | |
Text
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Fulton, Mo 65251 April 16,1999 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Stop PI-137 g6 Washington, DC 20555-0001
'Amweri UE uENRC-3993 Gentlemen:
DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT I FACILITY OPERATING LICENSE NPF-30 SPECIAL REPORT 98-03 RESULTS OF TILE TENTil STEAM GENERATOR TUHE IN-SERVICE INSPECTION 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 Steam Generators performed in April,1998 during Callaway Plant's ninth refueling outage. This report documents the final Steam Generator inspection results.
This is being resubmitted because the previous letter (ULNRC-3993) was sent with the incorrect date and was not printed on our letterhead. We are sorry for any inconvenience this may have caused.
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{DR ADOCK 05000483 R. D. Affolter PDR Manager, Callaway Plant RDA/HDB/TWP/ GAG Enclosure
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ULNRC-3993 Page 2 cc:
U. S. Nuclear Regulatory Commission (Original and 1 copy)
Attn: Document Control Desk Mail Stop Pl-137 Washington, DC 20555-0001 Mr. Ellis W. Merschoff Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 Senior Resident Inspector Callaway Resident Office U.S Nuclear Regulatory 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
ULNRC-3993 Page1of15 SPECIAL REPORT 98-03 RESULTS OF TENTil 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 completion of the inspection. This Special Report shallinclude:
- 1) Number and extent of tubes and sleeves inspected,
- 2) Location and percent of wall-thickness penetration for each indication of an j
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:
L
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 shown 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 Work Scope S/G A l 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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i ULNRC-3993 Page 3 of 15 (2) Location / Percent of Wall-Thickness Penetration for Each Indication of Imperfection See Tables 2,3,4, and 5 on the following pages for steam generator tube 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 I
AV1,2,3,4,5,6 - Anti-Vibration Bars 02H,07H,07C, etc. - Tube Support Plate Numbers / Cold Leg (C), Hot Leg (H)
TSil-Tubesheet Hot Leg sal-Single AxialIndication MAI-Multiple AxialIndication SCI - Single Circumferential Indication MCI - Multiple Circumferential Indication SVI-Single Volumetric Indication MVI - Multiple Volumetric Indication I
1
ULNRC-3993 Page 4 of 15 TABLE 2 TUBE IMPERFECTIONS - STEAM GENERATOR 'A' INDICATION %
INCH ( + ) FROM ROW 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 SAI TSH
+ 0.16 13 57 SAI 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 sal 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 SAI 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 40 80 SAI TSH
+ 0.01 19 82 sal TSH
+ 0.08 30 83 SCI TSH 0.00 41 88 SAI TSH
-0.05 38 90 SCI TSH 0.00 35 99 sal TSH
+ 0.05 15 114 SCI TSH
+ 0.03 s.
ULNRC-3993 Page 5 of 15 TABLE 3 TUBE IMPERFECTIONS STEAM GENERATOR *B' INDICATION %
INCH (+) FROM HQW COLUMN WALL THINNING LOCATION LOCATION 37 20 40 AV4 0.00 50 47 42 AVS 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 AV5
-0.20 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 AVS 0.00 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
ULNRC-3993 Page 6 of15 TABLE 3 TUBE IMPERFECTIONS - STEAM GENERATOR 'B' INDICATION %
INCH ( +) FROM RQW COLUMN WALL THINNING LOCATION LOCATION 35 43 24 AV5
-0.28 26 45 26 AV1
+ 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 AVS 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 1
47 63 26 AV2 0.00 l
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 AV5
+ 0.11 42 68 30 AV2
+ 0.03 42 68 30 AV3
+ 0.20 42 68 22 AV4
-0.08 42 68 30 AV5
+ 0.03 42 68 27 AV6
-0.17 47 69 21 AV2 0.00 55 71 27 AV4
-0.08 SS 71 26 AV5
-0.30 50 72 21 AV3
-0.06 41 74 38 AV4
+ 0.08 41 74 38 AV5
+ 1.32
ULNRC-3993 Page 7 of 15 TABLE 3 TUBE IMPERFECTIONS - 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 AV5
+ 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 l
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 AV5 0.00 44 98 22 AV4 0.00 44 98 26 AV5 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 1
42 103 31 AV5 0.00 34 110 24 AV3 0.00 32 112 22 AV5 0.00 30 113 21 AV5 0.00 30 114 21 AV1 0.00 i
t ULNRC-3993 Pege 8 of15 TABLE 4 TUBE IMPERFECTIONS - STEAM GENERATOR 'C' INDICATION %
INCH ( +) FROM EQE COLUMN WALL THINNING LOCATION LOCATION 28 11 SCI TSH
+ 0.09 27 13 SCI TSH
+ 0.09 20 17 SAI TSH
+ 0.10 q
23 18 sal TSH
+ 0.02 31 19 SCI TSH
+ 0.08 i
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 sal TSH
+ 0.12 49 48 40 AV3 0.00 12 50 SCI TSH 0.00 14 51 SAI TSH
+ 0.13 j
52 51 SCI TSH
-0.02 11 53 SAI TSH
+ 0.52 31 53 SCI TSH
+ 0.10 11 57 SAI TSH
+ 0.60 l
12 57 sal 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 SCl TSH
+ 0.06 47 91 41 AV4 0.00 43 92 47 AV4 0.00 50 92 SCI TSH
-0.04 22 99 sal TSH
+ 0.08 44 100 43 AV5 0.00 41 105 51 AV5 0.00 13 107 SCI TSH
+ 0.05 32 109 43 AV5 0.00 30 114 50 AV5 0.00 24 6
26 AV1 0.00 27 8
27 AV1 0.00 28 8
34 AV1
+ 0.17 28 8
33 AV1
-0.11
i ULNRC-3993 Page 9 of 15 TABLE 4 TUBE IMPERFECTIONS STEAM GENERATOR 'C' INDICATION %
INCH ( + ) FROM EQ_W_
COLUMN WALL THINNING LOCATION LOCATION 28 9
21 AV5 0.00 29 9
21 AV5 0.00 30 12 26 AV5 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 l
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 42 33 28 AV2
+ 0.08 36 35 23 AV3 0.00 l
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 1
46 37 32 AV2 0.00 46 37 24 AV3
+ 0.14 l
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 24 46 22 AV6 0.00 40 46 24 AV3 0.00
ULNRC-3993 Page 10 of 15 TABLE 4 1
TUBE IMPERFECTIONS - STEAM GENERATOR 'C' INDICATION %
INCH (+ ) FROM HQW COLUMN WALL THINNING LOCATION LOCATION 49 48 40 AV3 0.00 49 48 23 AV4
+ 0.22 36 52 29 AV2 0.00 l
36 52 23 AV4 0.00 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 AV5 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..'9 41 87 24 AV6
+ 0.22 47 87 26 AV2 0.00 47 87 28 AV5 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
ULNRC-3993 Page11 of15 TABLE 4 TUBE IMPERFECTIONS - STEAM GENERATOR 'C' INDICATION %
INCH ( + ) FROM BDW COLUMN WALL THINNING LOCATION LOCATION l
47 91 23 AV3 0.00
{
47 91 41 AV4 0.00 47 91 28 AV5 0.00 43 92 33 AV3
+ 0.17
)
43 92 47 AV4 0.00 43 92 25 AVS
+ 0.06 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 AVA 0.00 43 94 23 AV1 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 AV5 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
i
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ULNRC-3993
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Page 12 of 15 4
TABLE 4 TUBE IMPERFECTIONS - STEAM GENERATOR 'C' INDICATION %
INCH ( + ) FROM EQ_W COLUMN WALL THINN1_N_G 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 4
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 AV5 0.00 l
I t
r ULNRC-3993 Page 13 of15 TABLE 5 TUBE IMPERFECTIONS - STEAM GENERATOR 'D' INDICATION %
INCH (+) FROM EQW 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
t ULNRC-3993 Page 14 of 15 (3)
Identification ofTubes Plugged or Repaired Table 6 STEAM GENERATOR TURES 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 12 53 31 24 19 55 46 37 21 56 50 45 13 57 19 46 21 58 51 46 14 59 12 47 39 59 49 48 30 60 12 50 46 60 14 51 30 62 52 51 29 65 11 53 36 65 31 53 32 68 11 57 13 70 12 57 15 70 12 59 22 70 30 60 11 79 40 70 32 79 48 71 j
40 80 16 76 19 82 47 79 30 83 47 91 41 88 43 92 38 90 50 92 1
35 99 22 99 15 114 44 100 41 105 13 107 32 109 30 114 i
m ULNRC-3993 Page 15 of 15 Table 7 STEAM GENERATOR CUMULATIVE TUBE PLUGS PERIOD S/G A S/G B S/G C S/G D TOTAL Previous 51 37 64 77 229 Refuel 9 32 4
36 5
77 TOTAL 83 41 100 82 306 No tubes were sleeved during Refuel 9.
4
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