ML20206E321

Forwards Special Rept 98-03 Re Inservice Insp of CP Sgs,Per Plant TS 4.4.5.5.b.Insp Was Performed in Apr 1998 During Plant Ninth Refueling Outage.Rept Is Being Resubmitted Due to Typos in Original Rept

ML20206E321
Person / Time
Site:	Callaway
Issue date:	04/28/1999
From:	Affolter R UNION ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ULNRC-4019, NUDOCS 9905050080
Download: ML20206E321 (17)

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Union Electric po Box 620 Calleway FIant Fulton, MO 65251 April 28,1999 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Stop PI-137 Washington, DC 20555-0001 77ggg ULNRC-4019

1. E Gentiemen:

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 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 inadvertently sent with two typographical errors: one in Table 3 and one in Table 4. Specifically in Table 3, the tube imperfection located at row 43, column 30, should be deleted. Also, in Table 4, the tube imperfection located at row 32, column 111, with a location of AV2 and +10.27, should be changed to AV3 and 0.00. We are sorry for any inconvenience this may have caused.

1 gL R. . Affolter Manager, Callaway Plant RDA/HDB/TWP/ GAG Enclosure

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- 4 W 9905050080 990428 PDR ADOCK 05000483 G PDR e subsidinty of Amoren Corporation

ULNRC-4019 Page 2 l-cc:

' U. S. Nuclear Regulatory Commission (Original and I 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 l 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 Senior Resident Inspector Callaway Resident Office l 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 i Mail Stop 13E16 Washington, DC 20555-2738 Manager, Electric Department

.- Missouri Public Service Commission PO Box 360 l Jefferson City, MO 65102 Deputy Director Department of Natural Resources PO Box 176 Jefferson City, MO 65102 i

Superintendent, Licensing Wolf Creek Nuclear Operating Corporation PO Box 411 Burlington,KS 66839

. s ULNRC-4019 Page 1 of 15 SPECIAL REPORT 98-03 RESULTS OF TENTH STEAM GENERATOR TUBE IN-SERVICE INSPECTION i

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 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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j ULNRC-4019 Page 2 of 15 (1) Number / Extent ofInspected Tubes and Sleeves Table I 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 S/G H S/G C S/G D Bobbin coil, fulllength 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 l

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ULNRC-4019 Page 3 of15 (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 AV1,2,3,4,5,6 - Anti-Vibration Bars 02H, 07H, 07C, etc. - Tube Support Plate Numbers / Cold Leg (C), Hot Leg (H)

TSH - Tubesheet Hot Leg SAI- Single AxialIndication MAI- Multiple AxialIndication SCI - Single Circumferential Indication MCI - Multiple Circumferential Indication l SVI- Single Volumetric Indication f

MV1 - Multiple Volumetric Indication i

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TUBE IMPERFECTIONS - STEAM GENERATOR 'A' INDICATION % INCH (+) FROM l ROW COLUMN WALL THINNING LOCATION LOCATION

! 21 25 SCI TSH -0.04 18 26 SA! TSH +0.05 21 37 SCI TSH -4.92 i 27 38 SCI TSH -1.11 21 42 SCI TSH -0.42 18 46 SCI TSH -0.14 17 - 49 sal TSH +0.04 12 53 SCI TSH -0.05 19 55 SCI TSH +0.11 21 56 SAI 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 sal TSH +0.01 30 62 SCI TSH -0.04 29 65 SAI TSH +0.02 36 65 SCI TSH -0.05 32 68 SAI TSH +0.08 13 70 sal TSH +0.12 15 70 SCI TSH -0.08 22- 70 MCI TSH +0.04 11 79 sal TSH +0.07 32 79 SAI TSH 0.00 40 80 sal 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 SAI TSH +0.05 15- 114- SCI TSH +0.03 i

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TABLE 3 TUBE IMPERFECTIONS - STEAM GENERATOR *B' l

INDICATION % INCH (+) FROM i ROW COLUMN WALL THINNING LOCATION LOCATION

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l 37 20 40 AV4 0.00 I 50 47 42 AVS 0.00 12 58 SAI 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 1 32 11 33 AV6 -0.25 l 32 12 27 AV4 0.00 l 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 4 45 24 27 AV5 -0.06 l 42 25 22 AV4 -0.17 i 50 28 27 AV5 0.00 41 30 24 AV2 -0.09 I 42 30 25 AV3 -0.03 42 30 21 AV4 -0.17 I

49 31 24 AV2 -0.06 49 31 28 AVS -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 l 26 43 24 AV6 0.00 l 35 43 34 AV3 0.00 l

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ULNRC-4019 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 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 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 AV5 +0.11 42 68 30 AV2 +0.03 42 68 30 AV3 +0.20 42 68 22 AV4 -0.08 42 68 30 AVS +0.03 42 68 27 AV6 -0.17 47 69 21 AV2 0.00 55 71 27 AV4 -0,08 55 71 26 AV5 -0.30 50 72 21 AV3 -0.06 41 74 38 AV4 +0.08 41 74 38 AV5 + 1.32 I-

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TABLE 3 4

TUBE IMPERFECTIONS - STEAM GENERATOR 'B' l lNDICATION %

! ROW INCH (+) FROM f COLUMN WALL THINNING LOCATION LOCATION I t

49 75 21 AV2 -0.54 37 76 28 AV3 -0.31 37 76 31 AV4 +0.08 i 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 l 40 89 24 AV2 0.00 I 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 l 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 42 103 31 AV5 0.00 I 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

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TABLE 4 TUBE IMPERFECTIONS - STEAM GENERATOR 'C' INDICATION % INCH (+) FROM l

ROW COLUMN WALL THINNING LOCATION LOCATION l

28 11 SCI TSH +0.09 27 13 SCI TSH +0.09 l 20 17 SAI TSH + 0.10 l

23 18 sal TSH +0.02  ;

31 19 SCI TSH +0.08 l 42 21 SVi TSH +0.05 l 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 sal 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 mal 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 sal TSH +0.08 44 100 43 AVS 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 l 27 8 27 AV1 0.00 l 28 8 34 AV1 +0.17 l 28 8 33 AV1 -0.11

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.. .. TABLE 4 TUBE IMPERFECTIONS - STEAM GENERATOR 'C' INDICATION % INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 28 9 21 AV5 0.00 29 9 21 AV5 0.00 30 12 26 AV5 0.00 i 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 I 37 19 31 AV3 0.00 40 20 31 AV4 0.00 50 28 32 AVS 0.00 50 28 29 AV6 0.00

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39 29 26 AV2 0.00 46 29 31 AV4 0.00 '

42 33 28 AV2 +0.08 ,

36 35 23 AV3 0.00 {

46 35 23 AV2 0.00 1 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 1 46 37 24 AV3 +0.14 46 37 41 AV4 +0.44 27 39 22 AV1 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 l 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 45 45 AV3 0.00 50 45 46 AV4 0.00 24 46 22 AV6 0.00

40. 46 24 AV3 0.00

l ULNRC-4019 Page 10 of 15 TABLE 4 l l TUBE IMPERFECTIONS - STEAM GENERATOR 'C' INDICATION % 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 0.00 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 0.00 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 l 46 90 32 AV4 0.00 l 53 90 34 AV5 0.00 i

47 91 25 AV2 0.00 l

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ULNRC-4019 Page 11 of 15 l , . TABLE 4 TUBE IMPERFECTIONS - STEAM GENERATOR 'C' l

i INDICATION % - INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION i

47 91 23 AV3 0.00 l 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 AV5 +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 AV4 0.00 43 94 23 AV1 0.00 43 94 23 AV2 0.00 43 94 31 AV3 0.00 I 43 94 36 AV4 0.00 43 94 23 AV6 0.00 49 95 34 AV4 0.00 l 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 AVS 0.00 43 103 21 AV4 0.00 43 103 27 AVS 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

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TABLE 4 TUBE IMPERFECTIONS - STEAM GENERATOR '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 l 32 111 21 AV3 0.0G 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 4

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, . TABLE 5 TUBE IMPERFECTIONS - STEAM GENERATOR 'D' l

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 l

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-(3) Identification of Tubes Plugged or Repaired Table 6 STEAM GENERATOR TUBES PLUGGED DURING REFUEL 9 I S/G A S/G B S/G C S/G D i ROW COL ROW COL ROW COL ROW COL 21 25 37 20 28 11 28 45 18

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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 1 30 62 52 51 29 65 11 53 i 36 65 31 53 32 68 11 57 13 70 12 57 1 15 70 12 59 l

22 70 30 60 i 11 79 40 70 l I

32 79 48 71 40 80 16 76 19 82 47 79 30 83 47 91 41 88 43 92 1 38 90 50 92 35 99 22 99 15 114 44 100 41 105 13 107 32 109 30 114 l

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Table 7 l STEAM GENERATOR CUMULATIVE TUBE PLUGS l-PERIOD S/G A S/G B S/G C S/G D TOTAL Previous 51 37 64 77 229 l Refuel 9 32 4 36 5 77 TOTAL 83 41 100 82 306 l

No tubes were sleeved during Refuel 9.

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