ML20096E318

Forwards Suppl Pulled Tube Eddy Current Insp Results

ML20096E318
Person / Time
Site:	Byron
Issue date:	01/16/1996
From:	Saccomando D COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9601220119
Download: ML20096E318 (12)

Text

Commonwealth Edison Company 1400 Opus Place Downers Grove, IL 60515-5701 January 16,1996 United States Nuclear Regulatory Commission Washington, D.C. 20555-0001 Attention: Document Control Desk

Subject:

Supplemental Pulled Tube Eddy Current inspection Results Byron Nuclear Power Station, Unit 1 Facility Operating License NPF-37 NRC Docket No. 50-454

References:

1.

Denise M. Saccomando (Comed) letter to USNRC Document Control Desk, " Byron Unit 1 Pull Tube Eddy Current Inspection Results," dated December 22,1995 2.

Harry Pontious (Comed) letter to USNRC Document Control Desk,

" Supplement Pulled Tube Eddy Current Inspection Results," dated January 2,1996 In References 1 and 2, Commonwealth Edison Company (Comed) provided the Nuclear Regulatory Commission (NRC) Staff with the latest (as of December 21,1995 and January 2,1996) field eddy current testing (ECT) data for the ten steam generator tubes pulled from the Byron Nuclear Power Station, Unit 1, Steam Generator A, during the recent mid-cycle steam generator tube inspection outage.

The data contained in these 2 correspondences were data results from vendors A through E. Subsequent to that submittal, Comed has received the final data for F and G, received on January 12,1996. For ease of review, Comed is attaching the complete eddy current testing report for vendors A through G which supersedes References 1 and 2.

To the best of my knowledge and belief, the statements contained in this document are true and correct. In some respects these statements are not based on my personal knowledge, but on information furnished by other Comed employees, contractor employees, and/or consultants. Such information has been reviewed in i

accordance with company practice, and I believe it to be reliable.

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9601220119 960116 I

PDR ADOCK 05000454

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PDR s y A Unicom Company I

NRC Document Control Desk January 16,1996 i

Please address any comments or questions regarding this matter to this office.

Sincerely,

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Denise M. Sacco ndo l

Senior Nuclear Licensing Administrator l

Signed before me

/b day of D*41~

,1996, on this

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OFFICIAL SEAL,,

JACQUELINE T EVANS h NOTARY PUGUC, STATE OF ILLIN04s 4 Mr COMMISSION EKMR f g, 4:=:=====:=:=ES: 12/15/97

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// Notary Public Enclosure cc:

H. J. Miller, Regional Administrator - Rlli M. D. Lynch, Senior Project Manager - NRR G. F. Dick Jr., Byron Project Manager - NRR 1

H. Peterson, Senior Resident inspector - Byron Office of Nuclear Facility Safety - lDNS l

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S ATTACHMENT Comed BYRON TUBE PULL ECT SIZING RESULTS

SUMMARY

BYRON PULLED TUBES (12/95)

Probe Analyzed / Cal Group (s)

Plus Point 300 kHz 205,207,209 Vendor A

Brief Discription of Technique Axial scan line filter phase measurement with filter applied ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEF7H %

AXIAL INDICATION AXIAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 62 40 6.8 Best Effort on Depth 28 68 28 76 4.7 40 0.18 3

20 85 156 /20 /5 69 24.3 38 44 70 40 7.8 Best Effort on Depth 23 43 67 /59 /22 /39 86 26 l

24 42 145 99 35.6 74 0.18 14 93 251 83 41.8 98 /99 /88

.25/.25/.20 27 48 58 40 6.4 Best Effort on Depth 38 55 310 88 43.9 14 37 310 99 61.1 BYRON PULLED TUBES (12/95)

Probe Analyzed / Cal Group (s)

Plus Pt. Gimbated 300 kHz 197 Vendor A

Brief Discription of Technique Axial scan line filter applied (Length rnessurement only)

ROW COL ARC LENGTH (S)

MAX DEPTH AVG DEPTH %

AXIAL INDICATION AXIAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 167 40 18.77 28 68 41 40 4.69 52 0.33 20 85 293 67 32.92 38 44 44 40 3.71 23 43 97,174 100,96 55.07 24 42 177 89 33.07 80 0.19 I

14 93 286 88 43.94 27 48 232 51 23.72 38 55 316 41 25.24 14 37 304 98 48.77 Page 1

BYRON PULLED TUBES (12/95)

Probe Analyzed / Cal Group (e) 205,207,209 0.080 pancake Vendor B

Brief Discription of Technique 0.080 me pancake using axial average filter ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXtAL INDICATION AXIAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 O

O O

28 68 40 84 6.22 20 85 0

0 0

38 44 O

O O

23 43 70,80 85,100 11,.9 4 24 42 80,90 95,99 20.64 14 93 120 100 15.64 27 48 0

0 0

38 55 120 99 22.06 14 37 220 99 27.33 BYRON PULLED TUBES (12/95)

Probe Analyzed / Cal Group (s) 207.205.209 Vendor B

Brief Discription of Technique

.115 pancake using axial average filter ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXIAL INDICATION AXIAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 O

O O

28 68 40 20 1.67 20 85 40 99 8.19 38 44 40 20 1.67 23 43 100,160 99,92 39.06 24 42 80,90 96,99 33.97 14 93 130 79 11.31 27 48 40 95 6.31 38 55 40,140 52,90 27.06 14 37 140,70,30,20 96,99,34,20 25.89 Page 2

BYRON PULLED TUBES (12/95)

Probe Analyzed / Cal Group (s) 205,207,209 Vendor B

Brief Discription of Technique Plus point using axial average filter ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXIAL INDICATION AX1AL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 60 98 10 28 68 40 45 2.36 20 85 30,20 90,86 7.19 38 44 30 80 3.83 23 43 70,40,40,60,20 99,98,89,96,70 38.89 24 42 170 96 34.44 14 93 100 91 18.44 27 48 90 89 18.5 38 55 60,120,4C 95,98,99 40.58 14 37 40.60,40,20 78,84,75,86 20.03 BYRON PULLED TUBES (12/95)

Probe Analyzed / Cal Group (s) 205,207,209 Vendor C

Brief Discription of Technique Cross Correlation Filtering ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXIAL INDICATION AXtAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 O

O O

28 68 40 26 1.77 20 85 40 42 2.47 38 44 80 69 8

23 43 340 97 27.27 24 42 149 86 26.14 80 0.21 14 93 300 100 27.67 27 48 150 25 9.64 38 55 290 55 19.11 14 37 340 54 25.69 Page 3

BYRON PULLED TUBES (12/95)

Probe Analyzed / Cal Group (s) 197 Vendor C

Brief Discription of Technique Band Pass Filtering Plus Pt. 300 kHz ROW COL ARC LENGTH (S)

. MAX DEPTH AVG. DEPTH %

AXIAL INDICATION AXtAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 180 29 11.92 28 68 40 34 1.72 20 85 70 41 3.32 38 44 60 25 2.42 23 43 350 98 43.22 24 42 180 97 34.64 72 0.25 14 93 268 25 17.92 27 48 170 59 12.99 38 55 309 75 25.43 14 37 350 97 39.39 BYRON PULLED TUBES (12/95)

Probe Analyzed / Cal Group (s)

Vendor D

Brief Discription of Technique

.080 MR 300 kHz corrventional analysis (not using axial view)

ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXIAL INDICATION AXIAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 O

O 28 68 0

0 20 85 O

O 38 44 88 0

23 43 360 78 24 42 190 80 86 0.29 14 93 149 0

27 48 O

O 38 55 360 90 14 37 338 70 Page 4

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BYRON PULLED TUBES (12/95)

Probe Analyzed / Cal Group (s)

Vendor D

Brief Discription of Technique

.080 MR 300 kHz EDDYNET SOFTWARE r

ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXIAL INDICATION AXIAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 DATA TOO NOISY 28 68 20 85 38 44 23 43 72,47,58 99 34.1 91 MAX, 66 AVG.

O.27 24 42 46,100,72 98 42.5 MIXED MODE IND 14 93 222,28 80 17.3 27 48 38 55 305 88 26.2 14 37 250.25 94 41.3 BYRON PULLED TUBES (12/95)

Probe Analyzed 1 Cal Group (s)

Vendor D

Brief Discription of Technique Axial sensitive coit 300 kHz conventional analysis (not using axial view)

ROW COL ARC LENGTH {S)

MAX DEPTH AVG. DEPTH %

AX1AL INDICATION AXIAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 28 68 20 85 Some resid.1 38 44 23 43 Some residual 24 42 81 0.35 Some residual 14 93 Some residual 27 48 38 55 Some residual 14 37 r

Page 5

r BYRON PULLED TUBES (12/95)

Probe Analyzed / Cal Group (s)

Vendor D

Brief Discription of Technique Circurnferential sensitive coil 300 kHz conventional analysis (not using exiaf view)

ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXtAL INDICATION AX1AL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 O

O 28 68 32 11 20 85 37,78 49,32 Multiple 38 44 34,67 34,42 Multiple 23 43 108,138 66,46 Multiple 24 42 191 79 14 93 119 0

27 48 298 49 38 55 360 81 14 37 303 66 BYRON PULLED TUBES (12/95)

Probe Analyzed I Cal Group (s) 205.207.209 Vendor D

Brief Discription of Technique 115 MR 300 kHz conventional analysis (not using exial view)

ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXIAL INDICATION AXIAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 108 0

28 68 51 0

20 85 62,127 0,16 38 44 211 0

23 43 355 76 24 42 186 80 71 0.29 14 93 164 19 27 48 223 0

38 55 225 72 14 37 335 57 Page 6

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BYRON PULLED TUBES (12/95)

Probe Anatyred I Cal Group (s) 205,207,209 Vendor D

=

Brief Description of Technique Plus Pt. 300 kHz conventional analysis (not using axial view) i ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AX1AL INDICATION AXlAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 159 0

28 68 67 40 20 85 104,43 44,18 Multip8e 38 44 50,31 13,0 Multiple 23 43 360 74 24 42 196 82 75 0.2 14 93 300 33 27 48 97 38 38 55 353 57 14 37 360 64 BYRON PULLED TUBES (12/95)

Probe Anstyred / Cat Group (s) 203 Vendor D

Brief Discription of Technique

.080 HF 300 kHz conventional analysis (not using axial view)

ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXtAL INDICATION AXtAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 98 0

5 28 68 41 O

20 85 152,38 0,0 Multiple 38 44 192 0

23 43 349 74 24 42 185 84 73 0.26 14 93 152 0

27 48 246 0

38 55 339 69 14 37 295 43 r

Page 7

e BYRON PULLED TUBES (12/95).

Probe Analyzed / Cal Group (s) 197 Vendor' D

=

Brief Discription of Technique Gimbaned Plus Pt. 300 kHz conventional analysis not using exial view ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXIAL INDICATION AXtAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 300 55 18.3 28 68 64 58 7.1 20 85 32,152 78 14.5 38 44 32 40 3

23 43 251,54,20 82 31.3 24 42 168 94 33.4 84 TBD 14 93 330 59 30.7 27 48 180 not sizable n/a 38 55 276 81 28.9 14 37 94,30,44,145 79 36.7 BYRON PULLED TUBES (12/95)

Probe Analyzed Vendor D

Brief Discription of Technique Cecco-5 Compensation Mix ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXIAL INDICATION AX1AL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 NDO O

28 68 NDD 0

20 85 NDD 0

38 44 NDD 0

23 43 45,23 78,58 24 42 45,45 40,20 14 93 45 30 27 48 NDD O

l 38 55 90 50 14 37 23 20 I

l Page 8 1

1.'

Q BYRON PULLED TUBES (12/95)

Probe Analyzed Vendor D

Brief Discription of Technique UTEC ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXIAL INDICATION AXIAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 NDD 28 68 97 30 7.2 intermittent 20 85 300 not measurable intermittent 38 44 10,10 not measurable 97 includes 2 axially 23 43 97 (35,31),42,17 65 12 separated ind's 24 42 206 80 26 not measurable 0.25 Intermittent 14 93 NDD 27 48 NDD Intermittent Ind. below 38 55 310 not measurable bottom roll trans.

14 37 360 not measurable Interrruttent BYRON PULLED TUBES (12/95)

Probe Analyzed / Cal Group (s) 205,207,209 Vendor E

Brief Discription of Technique Plus Pt 300 kHz ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXI AL INDICATION AXIAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 160 80 28 68 145 CJ 80,80

.17,.29 20 85 360 90 38 44 219 90 23 43 360 100 24 42 253 100 100 0.21 14 93 360 90 27 48 304 90 80 0.25 38 55 360 90 14 37 360 100 Page 9

G-

• .e BYRON PULLED TUBES (12/95)

Probe Analyzed / Cal Group (s) 203 Vandor F

Brief Discription of Technique Data inversion 1-ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXIAL INDICATION AXtAL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches)

Crack depth indeterrninate 30%

_24-91 295 30 24.5 assigned 28 68 57,27 (84) 65 14.69 20 85 61,86(147) 52 19.03 38 44 47,30 (77) 37 5.24 23 43 243,40 (283) 80 45.83 24 42 68,29 (97) 81 21.55 70 14 93 324 52 34.12 27 48 136.8 (141) 68 21.23 38 55 85,255(340) 67 39.58 14 37 15.36,157(208) 70 28.85 BYRON PULLED TUBES (12/95)

Probe Analyzed / Cal Group (s)

Plus Pt. Girnbated 300 kHz 197 Vendor G

Brief Discription of Technique Band Pass Filtering ROW COL ARC LENGTH (S)

MAX DEPTH AVG. DEPTH %

AXIAL INDICATION AX1AL INDICATION COMMENTS Degrees OVER 360 DEPTH %

LENGTH (inches) 24 91 23,23,23,23 98 12 28 68 58,34,58,23,23 96 21.13 99,0,95 0.25,0.3,0.18 20 85 81,23,23,47,23 99 30.32 22,0 0.15,0.27 38 44 23,23,23,35,23,23 96 17.1 57 0.18 23,81,35,23,23,35, 23 43 23,23 94 27.84 94,84,15,84,15 21,0.51,0.21,0.18,0.30 24 42 256 86 42.71 92,91,74 0.36,0.42,0.27 35,23,35,35,23,23, 14 93 23 97 27.94 27 48 23,35,23,23,35 81 9.1 93,96 0.3,0.27 38 55 81,23,58,35,23 97 20.13 32,27,70,81 0.21,0.18,0.18,0.12 58,23,23,23,23,23, 14 37 23 75 13.61 54,78,70 0.18,0.12,0.15 Page 10

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