ML20147J388

Forwards Special Rept 87-04 Re Second Steam Generator Tube Inservice Insp.Proprietary Eddy Current & Mechanical Plugging Field Svc Rept 870407-17 Encl

ML20147J388
Person / Time
Site:	Callaway
Issue date:	03/04/1988
From:	Blosser J UNION ELECTRIC CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML19302D282	List: ML20147J388
References
ULNRC-1739, NUDOCS 8803150025
Download: ML20147J388 (11)

Text

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UNION ELECTRIC

,P.O. Box 620

- Fulton, MO 65251 March 4, 1988 U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 LINRC-1739 Gentlemen:

DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 FACILITY OPERATING LICENSE NPF-30 SPECIAL REPORT 87-04 RESULTS OF SECOND STEAM GENERATOR TUBE INSERVICE INSPECTION Ref: ULhTC 1503, dated 4/28/87 The enclosed Special Report is submitted pursuant to the requirements of Callaway Technical Specification 4.4.5.5 b concerning the second Inservice Eddy Current Inspection of Steam Generators 'B' and

'C' performed from 4/7/87 to 4/17/87 during a planned maintenance ou t a g;e . This report is also submitted to forward the final Westinghouse results of the inspection.

. D. Blosser Manager, Callavay Plant JAM /TPS /SEMe :jlh

Enclosures:

Special Report 87-04 Westinghouse Field Service Report ec: Distribution attached ,{

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cc distribution for ULNRC- 1739 Mr. A. Bert Davis Mr. Thomas Alexion (2 copies)

Regional Administrator Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission U. S. Nuclear Regulatory Commission Region III Mail Stop 13-E-21 799 Roosevelt Road Washington, D.C. 20555 Glen Ellyn, IL 60137 American Nuclear Insurers Mr. O. Maynard c/o Dottie Sherman, Library Wolf Creek Nuclear Operating Corp.

The Exchange Suite 245 P. O. Box 411 270 Farmington Avenue Burlington, KS 66839 Farmington, CT 06032 Mr. Merlin Williams 4

Manager, Electric Department Supt. of Regulatory Quality &

Missouri Public Service Commission Administrative Services Office of Inspection & Enforcement Wolf Creek Nuclear Operating Corp.

P. O. Box 360 P. O. Box 411 Jefferson City, MO 65102 Burlington, KS 66839 Records Center Institute of Nuclear Power Operations Suite 1500 1100 Circle 75 Parkway Atlanta, GA 30339 NRC Resident Inspector D. F. Schnell (400)

R. J. Schukai (470)

G. L. Randolph J. F. McLaughlin T. P. Sharkey (Z40SR)

(240SR) (w/c)

W. R. Campbell R. P. Wendling (470)

F. D. Field (480)

A. P. Neuhalfen A. C. Passwater/D. E. Shafer/D. J. Walker (470)

G. A. Hughes Z170.05 (QA Record)

M. S. Evans J. A. McGraw M. E. Taylor H. Wuertenbaecher, Jr. (100)

C. L. Auston (470)(NSRB)

S. J. Bellers/J. D. Schnack JDB Chrono 3456-0021.6

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SPECIAL REPORT 87-04 RESULTS OF SECOND STEAM GENERATOR TUBE INSERVICE INSPECTION This report is submitted in accordance with Technical Specification l (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 shall include:

(1) Number and extent of tubes inspected, (2) Location and percent of wall-thickness penetration for each indication of an imperfection, and i j

(3) Identification of tubes plugged."

From 4/7/87 to 4/17/87 with the plant in Mode 5 - Cold Shutdown for a planned maintenance outage, the second Steam Generator (S/G) Eddy l Current Inservice Inspection was performed on S/G's 'B' and 'C' to meet )

the surveillance requirements of T/S 3/4.4.5, "Steam Generators." The i inspection was performed by Westinghouse Electric Corporation and their  ;

formal results are detailed in the Field Service Report (TSR) which is  !

submitted with this Special Report.

Although the Westinghouse FSR provides details on the inspection, .

the results are summarized below and are numbered to correspond with the I information requested by T/S 4.4.5.5 b:

(1) Number / Extent of Inspected Tubes (a) Steam Generator 'B': The initial 20% sample i included a total of 1147 tubes which were inspected  !

from the Hot Leg side; 1025 of these were full length tests and 122 were tested through the U-bend.

(b) Steam Generator 'C': The initial 20% sample included a total of 1165 tubes which were inspected from the Hot Leg side; 1043 of these were full length tests and 122 were tested through the U-bend. 1 (c) From this initial sample, eight tubes in S/G 'B' and 16 tubes in S/G 'C' were found to have new indications. Union Electric Company, therefore, l nade the decision to test an additional 59 tubes in S/G 'B' and 55 tubes in S/G 'C' in the area where I

the new indications were found.

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(2) Location / Percent of Wall-Thickness Penetration for Each Indication of Imperfection See Tables 1 and 2 (3) Identification of Tubes Plugged S/G 'B' S/G 'C' Row Column Row Column 3 33 11 44 102 41 18 42 104 i 38 108 i

(4) Additional Information: Cumulative Tube Plugging-for S/G's

'B' and 'C' S/G 'B' S/G 'C' Row Column Row Column, Manufacturing 12 109 32 39 ,

15 41 47 26 57 64

, 58 74 Preservice 12 15 54 59  ;

Inspection 53 87 i

27 100 April 1987 33 11 44 102 Planned Outage 41 18 42 104  !

38 108

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TABLE 1

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TUBE IMPERFECTI0NS - STEAM CENERATOR 'B' Indication Inch (+)

(% of Wall (From Row Column Leg Thinning) Location Location) 15 3 H <20 3 9.7 9 4 H <20 2 28.3 32 11 H <20 V6 0.0 33 11 H 39 V6 0.0 33 11 H PID V6 0.0 33 11 H 22 V1 0.0 5 12 H <20 7 37.0 5 12 H INF 7 36.0 41 18 H 39 V4 0.0 41 18 H PID V4 0.0 41 18 H <20 V1 0.0 41 20 H 24 V4 0.0 5 22 H 21 2 9.0 43 23 H <20 3 43.5 45 24 H <20 1 9.8 48 25 H 28 V5 0.0 47 26 C INF 8 25.0 47 26 H <20 V5 8.6 Key - Tables 1 and 2 PID - Pluggable Indication INF - Indication Not Found DI - Distorted Indication UDS - Undefined Signal (plugging not required)

INR - Indication Not Recordable (<10%)

TS - Tube Sheet V1,2,3,4,5,6 - Anti-Vibration Bars 1,2,3,4,5,6,7,8 - Tube Support Plate Numbers UB - U-bend Page 1 of 3

TABLE 1 (cont.)

U Indication Inch (+)

(% of Wall (From Row Column Leg Thinning) Location Location) 43 27 H 22 1 15.1 3 30 H DI 6 36.9 45 30 H <20 6 9.1 15 32 C 35 3 26.1 37 32 C 31 3 20.2 37 32 C 27 3 20.3 37 32 C INF 4 20.0 45 32 C <20 7 13.7 45 32 C 20 7 11.3 45 32 C INF 7 37.3 1 33 H UDS 2 15.6 5 34 H <20 7 16.9 5 34 H UDS 5 32.0 11 34 H <20 1 4.0 35 34 H INR 6 20.2 53 34 C <20 5 13.2 32 40 H 30 2 27.9 1 43 H <20 4 13.0 1 43 H INF 3 13.0 12 45 H 29 3 20.4 48 50 C 23 3 25.7 48 50 C 31 3 27.0 41 52 C 23 4 16.9 41 52 C DI 4 17.0 23 53 H INR 5 33.3 29 56 H <20 2 10.4 30 59 H 23 5 20.3 Page 2 of 3

r, TABLE 1 (cont.)

Indication Inch (+)

(% of Wall (From-Row Column Leg Ihinning) Location Location) 9 -60 C INR -6 24.1 41 60 H <20 3 34.5 41- 64 C 21 7 32.0 45 70 H <20 TS 15.5 11 74 C 22 7 1.1 41 74 H <20 V4 0.0 41 74 H <20 V5 0.0 47 74 H <20 4 18.5 29 80 H INR 5 34.5 29 80 C <20 2 20.6 29 84 H 27 5 29.5 4 89 C 27 6 17.7 4 89 C INF 5 18.0 29 90 H <20 7 0.0 11 98 C <20 TS 7.7 44 101 H <20 V5 0.0 27 108 H 29 4 9.1

-27 108 H INF 4 7.0 29 113 H <20 6 14.3 29 114 C <20 7 21.5 Page 3 of 3

TABLE 2 TUBEIMPERFECTIONS-STEAMGENERATOR'g Indication Inch (+)

(% of Wall (From Row Column Leg Thinning) Location Location 1 8 2 C 24 6 27.6

'21 9 C <20 5 10.7 29 9 H <20 VS 0.0 9 10 C <20 7 30.2 32 10 H <20 V2 0.0 33 11 H DI 4 7.0 36 16 H <20 V4 0.0 43 21 H <20 V5. 0.0 43 21 H <20 V5 0.0 44 22 H <20 V4 0.0 44 22 H 20 V5 0.0 43 23 H 20 VS 0.0 48 25 H 28 V4 0.0 i 14 28 C INF 4 1.0

14 28 C 21 3 37.6 14 28 C INF 4 1.0 14 28 C 21 3 37.8 50 28 H <20 VS 0.0 l

f 51 34 C INR 7 18.0 l

l 19 42 C <20 6 15.5 2 43 H 23 5 16.0 10 46 0 31 5 23.1 ,

22 46 H INF 5 10.0 22 46 H <20 5 6.8 33 46 H <20 7 27.7  !

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a TABLE 2 (cont.)

Incication Inch (+)

(~ of Wall (Fron Row Column Leg Thinning) Location Location) 20 47 C <20 2 23.1 22 47 C 33 7 25.0 11 49 C INF 7 0.0 11 49 C <20 6 36.6 15 50 C DI 2. 31.9 16 50 C 34 5- 23.3 33 50 H 25 7 33.9 25 52 H <20 7 39.4 39 56 C 23 3 17.6 41 56 H <20 4 25.8 45 56 C <20 2 3.1 50 37 H INF 6 30.0 50 57 H 23 6 25.2 58 61 H INF 2 15.0 58 61 H 24 3. 16.9 23 62 H <20 7 36.8 59 62 C INF 8 35.0 59 62 C <20 7 34.3 l

1 16 63 H <20 2 31.0 38 68 C 34 2 37.9

, 7 77 H 25 TS 25.3 7 77 C <20 3 7.4 f

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27 78 C 22 7 20.3 49 78 H INR UB 0.0 13 83 C 23 TS 7.0 f 13 83 C <20 4 39.1 i

i 13 83 C INF 5 0.0 l

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f f). TABLE 2 (cont.) J i

Indication Inch (+)

' (% of Wall (From Row Column Leg Thinning) Location Location) 13 84 H <20 2 10.7

+

32 88. H <20 4 28.0 32 88 H INF 4 32.0 l

34 88 H <20 7 3.4 29 90 H 23 3 26.0

. 49 93 H <20 V5 0.0 50 94 H <20 2 20.7 50 95 H 26 V5 0.0  ;

23 96 H <20 6 2.5 23 96 H INR 3 15.0 ,

31 98 H <20 2 34.7 '

i 43 101 H <20 4 18.5 44 101 H <20 V3 0.0 '

44 102 H 36 V3 0.0 f 0.0 44 102 H 29 V4 i 44 102 H 20 V6 0.0

. 44 102 H PID V3 0.0 i 21 103 H <20 2 25.6 26 103 H INR 4 24.0 l 42 103 H 26 V5 0.0 33 104 H <20 3 7.3  ;

.. 40 104 H <20 V6 0.0 40 104 H 24 VS 0.0 40 104 H <20 V3 0.0  :

42 104 H 37 V3 0.0 42 104 H 30 V4 0.0

42 104 H PID V3 0.0 l 40 105 H 22 V4 0.0  !

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t, TABLE 2 (cont.) *

. Indication  : Inch'(+)

(% of Wall. .(From Row Column Leg Thinning) Location Location) 14 106 H 24 7 33.3 i- 14 106 H INF 7 32.0 23 '107 C DI 7 20.0 38 107 H <20 V3 0.0

=38 '107 H 29 V5 0.0 21 108 C INR 3 30.0 38 108 H 40 VS 0.0 38 108 H PID VS 0.0 17 109 H 26 TS 15.9 33 110 H 23 V4 0.0 12 113 H <20 5 22.5 30 114 H 23 V2 0.0 3', 114 H <20 V5 0.0 13 120 H k INR 3 0.0 E

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