ML20101M921

Provides Special Rept Per Requirements of TS 4.4.5.5.b Concerning In-Svc Eddy Current Insp of Plant SGs in May 1995 During Seventh Refueling Outage

ML20101M921
Person / Time
Site:	Callaway
Issue date:	04/01/1996
From:	Affolter R UNION ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ULNRC-3350, NUDOCS 9604080153
Download: ML20101M921 (17)

Text

.

. Cattaway Piet

, Post Othce Box 620

, futton. Missoon 65251 Union Euicnue

$E April 1,1996 Document Control Desk Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission l

Mail Stop PI-137 Washington,DC 20555 ULNRC-3350 j Gentlemen:

DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 FACILITY OPERATING LICENSE NPF-30 SPECIAL REPORT 95-02 (SOS 95-1138)

RESULTS OF TIIE EIGIITII STEAM GENERATOR TUBE IN-SERVICE INSPECTION REF: ULNRC-3211, dated 5/11/95 The enclosed Special Report is submitted pursuant to the requirements of Callaway Technical Specification 4.4.5.5.b concerning the In-service Eddy Current Inspection of Callaway's Steam Generators (S/G) performed in May 1995, during Callaway Plant's seventh refueling outage. This report documents the final inspection results.

1. T R. D. Affolter Manager, Callaway Plant WAY 4 % .f % 7 % d RDA/WAW/TEH/HDB/MAH/tdf Enclosure l l

9604080153 960401 0R0073 gj l PDR ADOCK 05000483 O . (8 I PDR , ,

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ULNRC-3350 April'1,1996 Page 2 cc: Mr. L. J. Callan Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 NRC Resident Inspector Ms. Kristine M. Thomas Licensing Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 13-E-21 Washington,DC 20555 Manager. 'dlectric Department Missoun Public Service Commission PO Box 36C Jefferson City, MO 65102 Mr. Thomas A. Baxter Shaw, Pittman, Potts, & Trowbridge 2300 N. Street N.W.

Washington, DC 20037 l

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, ULNRC-3350

. April 1,1996 Page 3 SPECIAL REPORT 95-02 RESULTS OF EIGHTH 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 in-service 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 inspected,

2) Location and percent of wall-thickness penetration for each indication of an imperfection, and

3) Identification of tubes plugged."

INSPECTION

SUMMARY

In May 1995, with the plant in Mode 6 for the seventh refueling outage, the eighth plant Steam Generator (S/G) Eddy Current In-service Inspection was performed. Forty (40) tubes were plugged as a result of the inspection. The inspection was performed by Westinghouse Electric Corporation, and the final results are detailed in this Special Report. The results 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-3350

. April 1,1996 Page 4 (1) Number / Extent ofInspected Tubes i

100% of the non-plugged tubes in S/Gs 'B' and 'C' were inspected using the  !

bobbin coil probe No bobbin coil testing was performed in S/Gs 'A' and

'D'.

S/G 'B' S/G 'C' ,

Tubes evaluated with 5609 5596 standard bobbin coil Tubes plugged previously 17 ._1Q Total Tubes 5626 5626  !

i The RPC inspection scope for S/G's included: 100% (17,507 tubes) of the l Tubesheet Ilot Leg (TSII) for the mill annealed tubing (> Row 10), 8.3% '

(405 tubes) TSH for thermally treated tubing and a small sample (108 inspections) ofIlot Leg support plates. The tubesheet inspections consisted of +2/-2 inches from the top of tubesheet. All tube support plate inspections were +2/-2 inches except the seventh tube support plate inspections were

+1/-2 inches.

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Page 5 l

(2) Location / Percent of Wall-Thickness Penetration for Each Indication of l Imperfection

]

1 See Tables 1,2, and 3 l l

TABLEI S/G 'B'  ;

TABLE 2 S/G 'C' '

TABLE 3 S/G's 'A' & 'D'

)

(Percent of wall-thickness penetrations are shown for indications of ,

> 20%.) ]

KE./ - TABLES 1. 2. and 3 i

i AV 1,2,3,4,5,6 - Anti-Vibration Bars 0~ 1I,07H,07C, etc. - Tube Support Plate Numbers / Cold Leg (C), llot Leg (II)

TSH - Tubesheet Hot Leg TSC - Tubesheet Cold Leg ,

DNT - Dent 1 OBS - Obstructed SAI - Single Axial Indication MAI-Multiple AxialIndication SCI - Single Circumferential Indication MCI - Multiple Circumferential Indication SVI- Single Volumetric Indication I i

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. ULNRC-3350 April 1,1996 Page 6 l

l (3) Identification of Tubes Plugged from the Eighth In-service Inspection.

S/G 'A' S/G 'B' S/G 'C S/G 'D' Tubes Plugged (Refuel 7) 11 5 20 4 j Tubes Previously Plugged 16 24 33 48  !

Total Tubes Plugged 47 29 53 52 l

S/G A S/G B S/G C S/G D l ROW COLUMN RO_W COLUMN RO_W COLUMN ROW COLUMN J X 21 47 49 33 1 1 1 1 11 50 47 65 37 18 33 56 ,

12 51 50 91 14 41 X 16 61 X 18 54 1 120 36 43 17 108 X 13 55 1 121 12 55 32 58 14 56 12 61 46 56 X 12 69 13 57  !

X 14 69 14 57 X 19 80 14 58 34 100 X 15 58 13 59

)

X 15 60 13 61 X 14 61 I 54 63 43 80 24 88 14 100 45 101 NOTE: X's indicate tubes with stabilizers installed.

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'. ULNRC-3350 April' I,1996 Page 7 TABLE 1 1

TU8E IMPERFECTIONS - STEAM GENERATOR 'B' l

' INDICATION % INCH (+) FROM  !

ROW COLUMN WALL THINNING LOCATION LOCATION 28 8 25 AV6 0.00 29 9 32 AV5 0.00 31 11 20 AV3 0.00 )

32 11 28 AV6 0.00 l

[ '

32 12 26 AV4 0.00 f

! 37 18 30 AV2 0.00 37 18 34 AV3 0.00 39 18 29 AV4 0.00 33 19 25 AV3 0.00 36 19 26 AV3 0.00 37 19 27 AV4 0.00 37 20 38 AV4 0.00 42 23 27 AV3 0.00

! 42 23 23 AV4 0.00

! l 42 24 37 AV4 0.00 l 42 24 27 AV5 0.00 I 45 24 29 AV5 0.00 42 25 23 AV4 0.00  ;

50 28 27 AV5 0.00 50 28 24 AV6 0.00 45 29 25 AV4 0.00 48 29 21 AV6 0.00 41 30 29 AV2 0.00 l 42 30 23 AV2 0.00

42 30 27 AV3 0.00 l - . .-. ,

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April ~ 1,1996 l' 4

Page 8 INDICATION % INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 49 31 28 AV2 0.00 49 31 25 AV4 0.00 49 31 30 AV5 0.00 49 31 22 AV6 0.00 39 32 22 AV2 0.00 39 32 21 AV5 0.00 49 33 39 AV3 0.00 49' 33 41 AV2 0.00 j 40 35 23 AV5 0.00 41 35 22 AV4 0.00 41 35 24 AV5 0.00 j l

26 43 21 AV2 0.00 26 43 25 AV6 0.00 35 43 30 AV3 0.00 1 26 45 22 AV6 0.00 35 45 31 AV3 0.00 35 45 25 AV5 0.00 1 47 45 32 AV3 0.00 f 47 45 24 AV4 0.00 )

i 50 47 30 AV3 0.00 I 50 47 28 AV4 0.00 l

50 47 30 AV5 0.00 50 53 28 AV4 0.00 26 54 29 01H 27.84 47 59 25 AV2 0.00 47 59 26 AV4 0.00 26 61 22 AV2 0.00 26 61 21 AV5 0.00 34 61 25 03C -0.03 27 63 27 06H 0.11 i 40 64 36 AV3 0.00

~

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l Aprif 1,1996 l i Page 9 INDICATION % INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION ,

40 64 22 AV4 0.00 i

26 65 30 AV5 0.00 47 65 24 AV1 0.00 .

47 65 23 AV3 0.00 47 65 40 AV4 0.00 46 66 27 AV4 0.00 47 66 27 AV2 0.00 54 67 34 AV2 0.00 54 67 29 AV4 0.00 (

s 42 68 32 AV2 I 0.00 ,

42 68 24 AV3 0.00 l 42 68 25 AV4 0.00 42 68 22 AV5 0.00 42 68 25 AV6 0.00 47 69 25 AV2 0.00  !

12 70 26 02C 28.02 55 71 28 AV4 0.00 55 71 26 AV5 0.00 55 71 22 AV6 -0.03 47 72 22 AV2 0.00 50 72 24 AV1 0.00 50 72 25 AV3 0.15 1 i

41 73 20 AV1 0.00 41 74 22 AV1 0.31 41 74 37 AV4 0.26 41 74 35 AV5 0.13 35 75 22 AV3 0.00 l 37 76 20 AV3 0.00 37 76 31 AV4 0.00 37 76 20 AV5 0.00

ULNRC-3350 Aprif 1,1996 Page 10 i INDICATION % INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 26 83 24 AV5 0.00 29 84 24 04H 29.74 46 84 20 AV1 0.00 46 84 22 AV2 0.00 46 84 21 AV3 0.00  !

i 43 85 23 AV1 0.00 43 85 29 AV3 0.00 46 86 26 AV3 0.00 46- 86 20 AV4 0.00 50 86 22 AV2 0.00 50 86 23 AV3 0.00 50 86 38 AV4 0.00 l 50 86 37 AV5 0.00 46 88 24 AV2 -0.03 l

46 88 22 AV3 0.00 '

40 89 38 AV3 0 00 40 89 35 AV5 0.00 42 90 33 AV4 0.00 46 91 26 AV1 -0.08 46 91 30 AV2 0.03 46 91 32 AV4 -0.01 50 91 30 AV1 -0.08 50 91 21 AV2 0.00 50 91 39 AV3 0.00 50 91 50 AV4 0.00 I

42 98 27 AV2 0.00 42 98 34 AV3 0.00 42 98 21 AV4 0.00 42 98 32 AV5 0.00 44 98 25 AV4 0.00 44 98 28 AV5 0.00 44 98 24 AV6 0.00 46 98 25 AV3 0.00 46 98 29 AV4 0.03 46 98 21 AV5 0.00

.. . . . - - -- . .-. . . - . . -. ~ . . .. . - . - . . . - . . - .- . . . . . ..

ULNRC-3350 I April 1,1996 i Page11  :

INDICATION % INCH (+) FROM -

ROW COLUMN WALL THINNING LOCATION LOCATION l

48 98 32 AV4 0.00 48 98 32 AV4 0.00 >

42 99 26 AV5 0.00 41 100 27 AV5 0.00 42 103 29 AV5 0.00 32 107 22 AV2 0.00 i 34 110 30 AV3 0.00 32 112 26 AV5 0.00 f 30 113 27 AV5 0.00 i 30 114 23 AV1 0.00 1 120 38 TSC 4.02

]

1 121 45 TSC 3.66 l

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i TABLE 2 TUBE IMPERFECTIONS - STEAM GENERATOR 'C INDICATION % INCH (+) FROM ROW

[

COLUMN WALL THINNING LOCATION LOCATION 1 1 OBS 01C 0.00 24 6 25 AV1 0.00 27 8 24 AV1 0.00 .

28 8 33 AV1 0.00  !

29 9 22 AV2 0.00 29 9 23 AV5 0.00 30 12 25 AV5 0.00 32 13 26 AV3 0.00 34 13 22 AV5 0.00 1

35 14 20 AV1 0.00 34 15 35 AV2 0.00 35 15 20 AV3 0.00 37 15 23 AV5 0.00 35 16 28 AV1 0.00 35 16 22 AV2 0.00 35 16 20 AV3 0.00 35 16 22 AV4 0.00 36 16 23 AV4 0.00 36 18 28 AV4 0.00 37 18 41 AV3 0.00 40 18 25 AV2 0.00 40 18 23 AV4 0.00 37 19 27 AV3 0.00 40 20 21 AV3 0.00 40 20 28 AV4 0.00 50 28 27 AV5 0.00 50 28 27 AV6 0.00

'. ULNRC-3350 April 1,1996 Page 13 l INDICATION % INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 39 29 25 AV2 0.00 39 29 24 AV4 0.00 46 29 20 AV2- 0.00  !

46 29 27 AV4 0.00 42 33 29 AV2 0.00 42 33 22 AV5 0.00 46 35 20 AV2 0.00 46 35 25 AV4 0.00 ,

t 40 37 27 AV3 0.00  !

40 37 23 AV4 0.00 46 37 22 AV2 0.00

{

46 37 31 AV4 0.00 1 27 39 30 AV5 0.00 14 41 MAI TSH 0.09 36 43 sal TSH -0.16 40 43 23 AV2 0.00 35 44 22 AV3 0.00 50 45 25 AV2 0.00 50 45 28 AV3 0.00 50 45 33 AV4 0.00 24 46 22 AV6 0.00 i

33 48 29 06C 38.03 49 48 33 AV3 0.00 49 48 21 AV4 0.00 16 50 26 04C 23.46 36 52 25 AV2 0.00 36 54 22 AV3 0.00 12 55 MIA TSH 0.42

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April 1,1996 l Page 14 ,

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INDICATION % INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 14 56 SVI TSH 0.24 37 56 22 AV3 0.00 '

46 56 25 AV3 0.00  !

46 56 43 AV4 0.00 13 57 SV1 TSH 0.20 14 57 SV1 TSH -0.08 50 57 24 05H 25.44 14 58 SVI TSH 0.01 15 58 SCI TSH -0.09 13 59 SV1 TSH 0.49 15 60 SCI TSH -0.26 13 61 SAI TSH 0.28 14 61 sal TSH 0.05 14 61 SCI TSH -0.08 58 61 24 02H 16.89 18 63 25 AV5 0.00 49 63 21 AV2 0.00 49 63 21 AV3 0.00 49 63 27 AV4 0.00 54 63 43 AV4 0.00 54 63 20 AV5 0.00 54 63 36 AV6 0.00 45 64 26 AVS 0.00 48 64 25 AV5 0.00 38 71 29 03C 29.49 44 71 23 AV2 0.00 44 71 30 AV4 0.00 44 71 31 AV5 0.00 44 71 23 AV6 0.00 36 77 27 03C 22.98 43 80 MAI TSH -0.19 41 81 22 AV3 0.00 l

4 ULNRC-3350 April 1,1996 Page 15

• INDICATION % INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 41 87 24 AV3 0.00 41 87 27 AV4 0.00 47 87 23 AV5 0.00 24 88 SAI TSH -0.16 41 r< 22 AV4 0.00 46 90 23 AV4 0.00 53 30 27 AV5 0.00 i

47 91 31 AV4 0.12 47 91 22 AV5 0.15 43 92 20 AV4 0.00 13 93 23 AV1 0.00 46 93 23 AV3 0.00 I 47 93 24 AV3 0.00 47 93 21 AV4 0.00 )

47 95 25 AV5 0.15 l 49 93 22 AV4 0.00 '

49 93 20 AV5 0.03 51 93 20 AV4 0.00 40 94 28 AV4 0.00 49 95 26 AV4 0.00 49 95 23 AV5 0.00 49 95 20 AV6 0.00 '

42 96 24 AV5 0.00 14 100 SAI TSH -0.01 40 100 29 AV5 0.00 44 100 29 AV5 0.00 45 101 44 AV4 0.00 45 101 26 AV5 0.00 27 102 31 AV6 0.00 40 103 23 AV2 0.00 40 103 27 AV5 0.00 l

ULNRC-3350

- Aprit 1,1996 Page 16 i INDICATION % INCH (+) FROM ROW COLUMN . WALL THINNING LOCATION LOCATION 39 105 25 AV4 0.00  ;

41 105 36 AV4 0.00 i 41 105 38 AV5 0.00

+

14 106 26 AV1 0.00 ,

32 109 28 AV5 0.00 32 110 21 AV6 -0.27

?

33 111 22 AV6 0.00 j i

31 113 21 AV5 -0.12 30 114 26 AV2 0.00 30 114 31 AV5 -0.27 9 118 22 06C 27A3 )

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- ..- .. _- - _ _ . _ - . . .=- - . -. . .- - .

, ULNRC-3350 Aprij 1,1996

Page 17 k

l TABLE 3 4

TUBE IMPERFECTIONS - STEAM GENERATOR 'A' INDICATION % INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 21 47 SCI TSH -1.05 11 50 sal TSH -0.16 i 12 51 sal TSH 0.10 18 54 sal TSH -0.05 18 54 MCI TSH -0.21 13 55 SCI TSH -0.18 32 58 MAI TSH -0.01 12 61 MAI TSH -0.08 12 69 SCl TSH -0.13 14 69 SCI TSH -0.22 19 80 SCI TSH -2.62 34 100 sal TSH 0.02 TUBE IMPERFECTIONS - STEAM GENERATOR 'D' INDICATION % INCH (+) FROM ROW COLUMN WALL THINNING LOCATION LOCATION 1 1 DNT TSC 17.25 33 56 SAI TSH -0.05 16 61 SCI TSH -0.06 17 108 SVI TSH -0.06

.)