ML033350340

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Framatome Anp, Inc. Document 31-5029337-02, Examination of Reactor Vessel (Rv) Head Degradation at Davis Besse, Figures 3.3.1 - 3.5.5
ML033350340
Person / Time
Site: Davis Besse Cleveland Electric icon.png
Issue date: 11/30/2003
From: Hour K, Hyres J
BWXT
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
1140-025-02-24 31-5029337-02
Download: ML033350340 (11)


Text

BWXT SERVICES, INC.

1140-025-02-24 61 OP Figure 3.3.1: Initial cavity sample section locations (cuts #1, #2, and #3).

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BWXT SERVICES, INC.

1140-025-02-24 62 BWTSRIEIC 10050-46 Cut #4 location Cut #5 location Figure 3.3.2: Photographs showing locations of cut #4 (top) and cut #5 (bottom).

Piece A2 contained the exposed cladding.

BWXT SERVICES, INC.

1140-025-02-24 63 BWTSRIEI.

10050-46 Figure 3.4.1: PT results for cut #3. A small weld void was present near the root of the nozzle #11 J-groove weld. Normal photo is on the left, black light photo on right. There was no evidence of cladding disbond noted on any of the cut faces examined. -1X C-23

BWXT SERVICES, INC.

1140-025-02-24 64 BWXTSERICE, IC.

14002502-4 6

Figure 3.4.2: Circumferential indications on RCS side of cladding from -0O to 45°.

No indications were present in the upward-deflected region of the cladding.

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BWXT SERVICES, INC.

1140-025-02-24 65 BWXT

SERVICES, INC.

1140-025-02-24 65 Figure 3.4.3: PT results for nozzle #3 J-groove weld bore and cladding underside.

The J-groove weld contained an axial indication near 100 on the bore ID and circumferential indications on the RCS side from -200 to -450.

BWXT SERVICES, INC.

1140-025-02-24 66 BWXT SERVICES, INC.

1140-025-02-24 66 Figure 3.4.4: PT results for upper surface of exposed J-groove weld. The axial crack is visible near 100 (rough weld texture produced high PT background).

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BWXT SERVICES, INC.

1140-025-02-24 67 BWXT SERVICES, INC.

1140-025-02-24 67 Figure 3.5.1: Photographs showing exposed cladding surface. The gray mask in the lower photograph was used to calculate the exposed cladding surface area.

BWXT SERVICES, INC.

1140-025-02-24 68 BWXT SERVICES, INC.

1140-025-02-24 68 Figure 3.5.2: Photographs showing clad thickness setup (top) and coordinate system (bottom).

BWXT SERVICES, INC.

1140-025-02-24 69 41 i

.~~~~~~~~~~~'.

n 3~~~~~~~~2" 40 5 20

\\40.200.27

. 32S2 0267 402s 40264 4025I

+0256

+022

+0.259 0242 40225

+0278

+0.267

+0253

+02n +02

[ i]

+0.253

+0243

+0.29 0236 1 inch

(

+0.252

+0.27

+D258

+C Cry

+o-51 I+3

+O et 4

0.314" (max) l z-\\

2/oN4nn4 40236 0.259 0242 40239 J26 j 20 l0.202" (rnin) l

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02.0 239 02 0233 4 02S5 40247 4C23S

'0238 22 0.239 40.246 4

0.2 031< 4 0.2t 4

0.233 40234

< 40239 4 ° -3M 4no0259

+0245 Figure 3.5.3: Cladding thickness measurements.

BWXT SERVICES, INC.

1140-025-02-24 70 BWXT SERVCES, INC 1140-02-02-24 7

Clad Thickness 4.2 1 0.3 0.29 0.28 0.217 0.26 0.25 0 24 0.23 0.22 0.21 0.2 2

-2

-j x

Figure 3.5.4: Colorized representation of clad thickness measurements.

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BWXT SERVICES, INC.

1140-025-02-24 71 BWXT

SERVICES, INC.

1140-025-02-24 71~~~~~

Clad Profile - Top Surface 4.2 1 0.09 Ii w

0.06 0.03 0.0

-0.03

-0.06

-009

_2-012 Figure 3.5.5: Colorized representation of exposed cladding profile. Red area denotes area of maximum deflection.