ML092600515

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L5-04GA440 (0), SO23-617-1-M1415, Rev. 0, San Onofre, Units 2 & 3 - Replacement Steam Generators Divider Plate Weld Joint Separation Root Cause Evaluation Report. Pages 101 Through 145
ML092600515
Person / Time
Site: San Onofre  Southern California Edison icon.png
Issue date: 09/10/2009
From:
Mitsubishi Heavy Industries, Ltd
To:
Office of Nuclear Reactor Regulation
References
L5-04GA440 (0), SO23-617-1-M1415, Rev 0
Download: ML092600515 (45)
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Text

{{#Wiki_filter:(A-48) Document No.L5-04GA440 (0) A Attachment-A Low alloy steel 600 r-Measurement line of hardness Fusion boundary I--- 152 buttering -4 -~- 4) C 500 400 300 200 100 t-0 C .2 600 500 400 300 200 100 0 -0 -2 0 2 4 6 8 10 12 14 LDistance from fusion boundary (mm)

  • Testing load is 2g at the distance between -0.05 to 0. 15mnm Enlarged

'--v 152 buttering White-zone LAS I-3.05 0 05 0.1 Distance from fusion boundary (mm) Fig. A.24(1) Vickers hardness of cross section of sample B (152 buttering) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 101 of 484 SO23-617-1-M14 L15, Rev. 0 (A-48) Document No.LS-04GA440 (0) _______________________________ ~~ AnEh~n~A Lawai loy stee I ~usion boundary Measurement I ine of hardness Ln d :> I en en Q) c -c L <1l ..c en L Q) ..::r::. u 600 500 400 300 200 100 o -2 I I 1-----+ I I I 4~ t I I I I I I o y 152 buttering ~ I I I 2 4 6 8 10 12 14 Distance from fusion boundary (mm) 1

  • Testing load is 2g at the distance between -0. 05 to O. 15nrn 600 Enlarged I -----+

152 butter i ng I § 500 I------~-Wfiltc:e:-::- zo

-cn:-::-e---------

~ I n

> 400 -

P ~ LAS: c: 300 n---~-t----I,-------- ~ I ~ 200 __. __ ~!_ -l---- i ~ I 5 100 r---'-- I o -0,05 o 0.05 Distance from fusion boundary (mm) 0,1 Fig. A.24 (1) Vickers hardness of cross section of sample B (152 buttering) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 101 of 484 S023-617-1-M1415, Rev. 0

(A-49) Document No.L5-04GA440 (0) JA Attachment-A I Enlarged le 248: 266 white zn I'm ' 334'

  • 277
S234,

.250"

  • 2*8

" " 9 247 250 239 f A AX 410

  • 35 269 305 214 231 20 rnm J

Load:2g Fig. A. 24(2) Vickers hardness of cross section of sample B (152 buttering)(Continued) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 102 of 484 S023-617-1-M1415, Rev. 0 (A-49) Document No.LS-04GA440 (0) __________________________ _____ ~ A~chmen~A 1 Enl ",ed l'. ..,. 277 ...25,8... .. 247 '4' ' + 234. 248 : ~ ~ '. 266

  • , 250

( . 1

  • 250 1

~ .,; ~..

  • 239
  • * ~~50
  • 251 I ',

238 " 298 oJ J.....~ 245 / I I (;> 254 3.05 ~1 ~39 Z69 1 lAS-. ~ 204 ' -r. - 214 231 239-; J... .. ' <rn /

  • I
  • 3115
3L~

~~~ii; 10 3Y5 Load:2g Fig. ~ 24 (2) Vickers hardness of cross sect ion of sample B (152 buttering) (Continued) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 102 of 484 S023-617-1-M1415, Rev. 0

(A-50) Document No.L5-04GA440 (0) Ak Attachment-A I White zone 600 500 r 400 C 300 L 200 100 0- -o Low alloy steel Measurement line of hardness -Fusion boundary -2 0 2 4 6 8 10 12 14 LTJ Distance from fusion boundary (mm)

  • Testing load is 2g at the distance between -0.05 to 0.15mm Enlarged 600

-o Low alloy steel 4 00 .T. -r83 500 54 q A "'k 400 ~ 30 Yh~tte zor-fe-300 I? S200 0 -0.05 0 0.05 0.1 Distance from fusion boundary (mm) Load:2g Fig. A.25 Vickers hardness of cross section of sample B (Low alloy steel channel head) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 103 of 484 S023-617-1-M1415, Rev. 0 (A-50) Document No.LS-0-lGA440 (0) ________________________________ ~~ AttKhmen~A 600 500 o q o 400 I Measurement I ine of hardness White zone 600 T Fusion boundary 1

. Low a II oy stee I l!?

500 0 .~

> 400 I

(/) (/) Q) c 300 -0 III oJ: (/) 200 Q) ~ ~~ ~ ~ ~~ I W' <..l I I 100 1---1 I I I 0 -2 o 2 4 6 8 10 12 14 y Distance from fusion boundary (mm) 1

  • Testing load is 2g at the distance between -0.05 to O. 15mm Enlarged

'------. Low al loy steel I-i-~. ____ _ '" '" :g 300 11 : _-----.Wb i te zone ~ .s: ~ 200 - u 100 o -0.05 I I __ L_ I I I - I I o 0.05 Distance from fusion boundary (mm ) 0.1 Load :2g Fi g. A.25 Vi ckers hardness of cross section of sample B (Lawai loy steel channel head) MITSUBlSHI HEAVY INDUSTRIES, LTD. Page 103 of 484 S023-617-1-M1415, Rev. 0

(A-51) Document No.L5-04GA440 (0) )* Attachment-A Loc ation A 230: 236. 2298 246~ ~Z5 I 224 - 17 52

  • 234
~25Z
2518,

-'387 ojz.L322 ( 1' 1. 1' The location hardness-tested 0 Load'2g Location A' LAS The location hardness-tested Load:2g Fig. A.26(1) Vickers hardness of cross section of sample B MITSUBISHI HEAVY INDUSTRIES, LTD. Page,104 of 484 S023-617-1-M1415, Rev. 0 (A-51 ) Document No.L5-04GA440 (0) _______________________________ ~ Att~hmen~A Location A

01, I

L.... , '{ The location hardness-tested Load:2g Locat i on A' LAS The location hardness-tested Load :2g Fig. A.26 (I) Vickers hardness of cross section of sample B MITSUBISHI HEAVY INDUSTRIES, LTD. P~ge , 104 of.484 S02~-6j7-1-M1415, Rev. 0

(A-52) Document No.L5-04GA440 (0) )I Attachment-A The location hardness-tested The location hardness-tested Location C Location B ~218 t ,,215 ~218 22 9

246,

-234A4 B -*244 .240 -226 I "249

2Az 1

'251 . 242 t 1, ~~245 3 229 ~~244 ~6 ' 255ý r 'U a 'N 'as A '.5 X\\ The results of hardness test (152 buttering side) Load:2g Location B' Location C' The results of hardness test (LAS Channel head side) Load:2g Fig. A.26(2) Vickers hardness of cross section of sample B (Continued) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 105 of 484 S023-617-1-M1415, Rev. 0 (A-52) Document No.L5-04GA440 (0) __________________ ~==========~-~ AttKhm en ~A Location B 218 215 218 ~ 240

  • 234 Locat ion B' The location hardness-tested Location C "259

. \\ f 251 +244 It 232 I * . 226

  • 263

\\, 249 "242

  • 240 252
  • 229 276.

252 2~ J

ft-245 246

' Z6~. -' 238' 229 ~ ,,244, [ +249 ".. :,~ 238

  • 259

. 255 ' r r / r .

  • f The results of hardness test (152 buttering side)

Locat i on C' f Load :2g The results of hardness test (LAS Channel head side) Load :2g Fi g. A. 26 (2) Vickers hardness of cross section of sampl e B (Continued) MITSUBISHI HEAVY INDUSTRIES. LTD. Page 105 of 484 S023-617-1-M1 415, Rev. 0

(A-53) Document No.L5-04GA440 (0) LAS White zone it Attachment-A Talysis direction Resin Low alloy steel White zone 152 buttering Ch-B-I Au LIFI I I I I I I I I I I I Fe 4000 2000 Fe o = 1 I 1 1 1 1 1 1 mm 0.00 0.02 0.04 0.06 0.08

0. 10
0. 12 ChS PETJ Cr hHH"j I

I I I I I I I I I I i i I i a I 2000 Cr 0 8 mm 01O0 8.02 0.04 0.06 0.08 0.10

0. 12 Ch3 LIFH Ni 6000 I

I I I I j I I I I I I I I.- / 3000 NiMM 00 0.02 0.04 0.06 0.08

0. 10
0. 12

_J_ Ch4 LOE2H C 80 40 L -- Effect of resin in crack 8 C l i t I I ,I I I I l J I, C mrn 0.02 0.06 0.08

0. 10 The result of C is for reference. The sample was evaporation coated with Au.

Fig. A.27 EPMA line analysis of cross section of sample B (152 buttering) Page 106 of 484 S023-617-1-M1415, Rev. 0 (A-53 ) Document No.L5-04GA440 (0) _____________________________ ~~-~ Att~menGA LAS \\White zone ~ Fe mm ChS PETJ Cr Cr mm Ch3 LlFH N1 Ni mm (h4 LOE2H C C mm 4 \\. direct i on Resin Low a II oy 152 butter i ng

~.~.4-----------------------_+

    • 4--------------_+ **

4----------- White zone 6000 4000 2000 0 0.00 0.02 0.04 0.06 0.08 0.10 0.12 6000 4000 2000 0 0.00 0.02 0.04 0.06 0.138 0.10 0.12 6000 3000 0 13.013 0.04 13.06 13.08 13.10 B. 12 81313 ~ Effect of resin in crack 4013 The result of C is for reference. The sample was evaporation coated with Au. Fig. A.27 EPMA I ine analysis of cross section of sample B (152 buttering) Page 106 of 484 S023-617-1-M1415, Rev. 0

(A-54) Document No.L5-04GA440 (0) jW Attachment-A lb2 buttering4. LAS 152 Resin buttering Analysis direction LAS -h2 B-Au LIF 'e 60 4000 I I I I 111111111 I I I I I I I - I' t / I I I I I I 2000 Fe MM

  • r U

.00 0.82 0.64 0.06 6.88

0. 16
0. 12 ChS PET J Cr Cr mm Ch3 2006 Ni Ni 6 mm 0.00 0.02 6.64

.06 0.0 H. 10

0. 12 CM LOE2H I

I C Effect of resin in crack mm 0.60 6.62 6.64 M6ID

0.
0. 10
6. 12 The result of C is for reference. The sample was evaporation coated with Au.

Fig. A.28 EPMA line analysis of cross section of sample B (Low alloy steel channel head) Page 107 of 484 S023-617-1-M1415, Rev. 0 (A-54) Document No. LS-04GA440 (0) ___________ ~~=-~--~-~~----------~. A rt~hme~A 152 buttering Ch2 B-Au LIF Fe Fe mm Ch5 PETJ Cr Cr mm Ch3 LIFH Nl Ni Ch-i LOE2H C mm C mm 6808 4008 2000 1600 1200 880 400 2000 1000 880 4130 Resin 152 butter ing LAS ~ 4 ~ 4 ~ ~ ~M~ ~.,.., ( / { { J 0.02 8.04

0. 06 0.88 0.10 0.12 0.132 13.04
0. 06 8.08
8. 113 8.12 The result of C is for reference. The sample was evaporation coated with Au.

Fig. A.28 EPMA I ine analys is of cross secti on of sampl e B (Low alloy stee l channel head) Page 107 of 484 S023-617-1-M1415, Rev. 0

(A-55) Document No.L5-04GA440 (0) Ak Attachment-A Table A.4 The results of EPMA semi-qualitative analysis (wt.%) Al Si Ti Cr Mn Fe Ni Nb Mo A: 4`h layer 0.2 0.4 30.1 4.7 8.8 54.6 1.3 Sample B B: 1't layer 0.3 0.4 0.2 23.1 3.7 30.3 41.0 1.0 (152 buttering) C: LAS base metal 0.3 0.5 1.4 96.9 1.0 152 weld metal** C B 0.11 0.27

0. 1 29.57 0.27 10.1 59.6 1.61 0.01 Sample B (Low Alloy D: LAS base metal 0.3 0.3 1.8 95.8 1.1 0.7 Steel)

Low alloy steel** 0.24 0.19 1.38 Bal. 0.88

  • The value obtained by semi-quantitative analysis was background and superposition X-ray were not considered.
    • The values in certification sheet of the material.

for reference because the effect of Low al oy 7 t steel A:4 th laver 152 buttering C: LAS base metal i T Resin Enlarged Fusion boundary Analyzed point(152 buttering) Analyzed point of adherent layer Fusion boundary Analyzed point (Low alloy steel) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 108 of 484 S023-617-1-M1415, Rev. 0 (A-55) Document No.L5-0-lGA-+40 (0) _______________________________ ~ A nKhmen ~ A Table A. 4 The results of, EPMA semi-qual itative analysis (wt.%) AI Si Ti Cr Mn Fe Ni Nb Mo A: 4th layer O. 2 0.4 30.1

4. 7
8. 8
54. 6 1.3 Sample B B: 1'1 layer O. 3
0. 4 23.1
3. 7
30. 3
41. 0 1.0 O. 2 (152 butter i ng)

C: LAS base metal O. 3 O. 5 1.4 96.9 1.0 152 weld metal** C .-\\,8 ) 0.11 0.27 0.1

29. 57 0.27
10. 1
59. 6
1. 61 O. 01 Sample B (Low Alloy D: LAS base meta l O. 3 O. 3 1.8
95. 8
1. 1 O. 7 Stee I)

Low al loy steel**

0. 24
0. 19
1. 38 Ba I.
0. 88
  • The value obtained by semi-quantitative analysis was for reference because the effect of background and superposition X-ray were not considered.
    • The values in certification sheet of the material.

Anal yzed point(152 buttering) Analyzed point (Low al loy steel ) Enlarged ~ Fusion boundary Fusion boundary 152 buttering C: LAS base metal Analyzed point of adherent layer MITSUBISHI HEAVY INDUSTRIES, LTD. Low a II oy steel Resin Page 108 of 484 S023-617-1 -M1415, Rev. 0

(A-56) Document No.L5-04GA440 (0) )k Attachment-A B II Top ad LAS Channel head Bottom D E ii Electron Discharge Machined Surface (Direction A) UT indication Center of Channel Head Center of Surface of stainless steel clad (direction B) UT indicat Center of 2i I

i 1

2 i Center of Channel Head Electron Discharge Machined Surface(Direction D) Fig.A.29 Appearance of sample C MITSUBISHI HEAVY INDUSTRIES, LTD. Page 109 of 484 S023-E517-1-M1415, Rev. 0 (A-56) Document No.L5-04GA440 (0)

~B~-----------~ Att~hmen~A Center of UT indicat Top D

Stainless steel clad C Bottom LAS Channel head D D Electron Discharge Machined Surface (Direction A) Surface of stainless steel clad (direction B) Electron Discharge Machined Surface (Direct ion D) FigA29 Appearance of sample C MITSUBISHI HEAVY INDUSTRIES, LTD. UT indication Center of Channel Head Center of Center of Channel Head Page 109 of 484 S023-617-1-M1415, Rev. 0

Cutt ing Cutting Cutting C,, C CO Cn I z Cn M, U D Surface after sampling \\ Cutting TP C-1 TP P-9 B LAS Channel head Surface after sampling Cutting CD'-- >t Fracture surface (stainless clad, from Direction D) Fracture surface (LAS, from Direction B) Fig.A.30 Appearance of fracture surface of TP C-1 and C-2 sample C Page 110 of 484 S023-617-1-M1415, Rev. 0 s::: =I (f) c: ~ (f)

x:

m }> ~ z o c: (f) --t ~ m (f) r --t o TP C-l Cutting Cutting Cutting B n CXLAS Channel head D Surface after sampling Cutting TP C-2 Surface after sampling Cutting Stainless steel clad L=J 3rrrn U D 3nm Fracture surface (stainless clad. from Direction D) Fracture surface (LAS. from Direction B) Fig. A. 30 Appearance of fracture surface of TP C-l and C-2 sample C Page 110 of 484 S023-617-1-M1415, Rev. 0

Forced fracture surface I Cutti (A-58) ng Document No.L5-04GA440 (0) Attachment-A 3mm Detail observation of Location A .L tniargea Enlarged IrlIdrýgu .L cniargeu Dendrite-boundary-I ke pattern Quasi-cleavage fracture surface Fig.A.31(l) SEM observation of fracture surface of TP C-l(sample C) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 111 of 484 S023-617-1-M141 5, Rev. 0 Forced fracture surface (A-58) Document No.L5-04GA440 (0) ~~~~fir§~jiw.J.:.,-"'-"- ~ ________ ~ Attachment-A 31TTTI Detai I observation of Location A Enlarged Dendrite-boundary-I ike pattern Quasi-cleavage fracture surface Fig. A. 31 (1) SEM observation of fracture surface of TP C-1 (sample C) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 111 of 484 S023-617-1-M1415, Rev. 0

Forced fracture surface (A-59) Cutting Document No.L5-04GA440 (0) )' Attachment-A Detail observation of Location B Lnlarged Enlarged Enlarged Enlarged uuasi-cieavage Traciure surTace Dendrite-boundary-like pattern Fig. A. 31(2) SEM observation of fracture surface of TP C-i(sample C)(Continued) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 112 of 484 S023-617-1-M1415, Rev. 0 Forced fracture surface C tt ' (A-59) u I ng Document No.L5-04GA440 (0) ~-:-=------:--:":"-I4i~~i==i:-______ ;... Attachment-A 31T1TI Deta i I observation of Location B Enlarged ~ Enlarged ~ Enlarged Quasi-cleavage fracture surface Dendrite-boundary-I ike pattern Fig. A. 31 (2) SEM observation of fracture surface of TP C-1 (sample C) (Continued) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 112 of 484 S023-617-1-M1415, Rev. 0

(A-60) Document No.L5-04GA440 (0) )' Attachment-A UT indication Macroscopic structure of sample C (TP C-3) Stainless steel clad UT indication / Enlarged Enlarged Enlarged 2Qztm_ Fig.A. 32(1) Micro-structure observation of cross section of sample C MITSUBISHI HEAVY INDUSTRIES, LTD. Page 113 of 484 S023-617-1-M1415, Rev. 0 UT indication Macroscopic structure of sample C (TP C-3) (A-60) Document o.L5-04GA440 (0)

.J... Attachment-A Stainless steel clad UT indicat ion Enlarged Fig. A. 32 (1) Micro-structure observation of cross section of sample C MITSUBISHI HEAVY INDUSTRIES. LTD.

I / ~-::.... ; ".Ir..t"~""l ' J ¢ I (. -.... ~ ',..... Page 113 of 484 S023-617-1-M1415, Rev. 0 \\

(A-61) Document No.L5-04GA440 (0) Detail observation of location C Attachment-A UT indication Detail observation of location B I niargea 16 Enlarged I-V K / N, ~ N j section of sample C (Continued) S023-617-1-M1415, Rev. 0 20gm Fig. A. 32(2) Micro-structure observation of cross Page 114 of 484 UT indication Oetai I observation of location B '( );p:. ~": \\

'1:

,J I ~ \\ \\~ \\, (A-61) Document No.L5-04GA440 (0) Oetai I observation of location C. Attachment-A d.. \\ [L }:/ ~-.. '~ f I } ~, \\ (l \\.. Enlarged '1 Fig. A. 32 (2) Micro-structure observation of cross section of sample C (Continued) Page 114 of 484 S023-617-1-M1415, Rev. 0

UT indication Detail observation of location D (A-62) Document No.L5-04GA440 (0) Attachment-A Detail observation of location E I I I I + tnlarged + tniargea Enlarged + tnlarged I ~ I-4 7,r~ ~ .~4. of cross section of sample C (Continued) Fig. A. 32(3) Micro-structure observation ZPAu-MITSUBISHI HEAVY INDUSTRIES, LTD. Page 115 of 484 S023-617-1-M1415, Rev. 0 UT indication Detai I observation of location 0 (A-62) Document No.LS-04GA440 (0) ______________ ~ Attachment-A Detai I observation of location E t Enlarged f .1 I, \\ \\ I Fig.A. 32 (3) Micro-structure observation of cross section of sample C (Continued) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 115 of 484 S023-617-1-M1415, Rev. 0

UT indication Detail observation of location D (Stainless steel weld metal) 10011 c 4 ý\\. (A-63) Document No.L5-04GA440 (0) mt Attachment-A Detail observation of location E (LAS) / A Fig.A.32(4) Micro-structure observation of cross section of sample C (Continued) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 116 of 484 S023-617-1-M1415, Rev. 0 (A-63 ) Document NO.LS-04GA440 (0) ________________________________________________________________________ ~ Attachment-A UT indication Detai I observation of location 0 (Stainless steel weld metal ) (, ': ? 1 / t ( v ( Detai I observation of location E (LAS) Fi g. A.32(4) Micro-st ructure observat ion of cross sect ion of sample C (Continued) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 116 of 484 S023-617-1-M1415. Rev. 0

(A-64) Document No.L5-04GA440 (0) Ak Attachment-A Stainless steel clad UT indication LAS I1* 6 I (J~ 4)1 -z U, C, 0 600 500 400 300 200 100 LAS L Stainless steel clad -r-0 -15 -10 -5 0 5 10 Distance from fusion boundary (mm) 174 1 212 ,221 S227 A231, 239 238 231 245

  • 240

-253 -259 .276 -274 -285

  • ,*297 30-29 200

" 11 205 207 -193 212"

  • 223

-215 °222 -235 -223. -* -23a 2156 8 IEnlarged Crack i 600 LAS 4 V 500 7> 400 -~300 5 200 1 00 0 0 0 0 Stainless steel clad I. ~m~4 -0.15 -0.1 -0.05 0 0.05 Distance from fusion boundary (mm: 01 0.15 Fig. A.33(1) Vickers hardness of cross section of sample C MITSUBISHI HEAVY INDUSTRIES, LTD. Page 117 of 484 SO23-61 7-1-M1415, Rev. 0 (A-64) Document No.L5-04GA440 (0) ________________________________ ~ AttKhmen~A Stainless steel clad UT indication LAS 600 G 500 0 :> I 400 (/J (/J <I.J C 300 -c ~ C\\l ..c (/J ~ 200 <I.J .Of:. () 100 0 -15 1

  • 174 227

~

  • 238 240

, 276

  • 297 LAS I

4 I ~ Sta i n less I stee l clad I I I -10 -5 o 5 10 i. '212 . 2.3i, 231

  • 253 Distance from fusion boundary (mm)

, I \\

  • 221'
  • 239 t'
  • 245 259 N

0 0 0 :> I ~ ~ ~ 600 500 400 y 1 En l arged Crack LAS .4-r-.~ Sta i n less ---=-:..:'---- I I steel clad .367 -383 * ~ ~ a 452 484 492 4,6 ~ ~ 300 200

- -r:

~I _----+ I

  • 200
  • 21 (.
  • 2~'::' l- '

+193

  • 212:

~?",

  • 207
  • 223
  • 235
  • 239
  • 23t

. 215.* 222, l,lf"'" ~ u _L ____ I. 100 I 0 -0.15 -0.1 -0.05 o 0.05 0.1 Distance from fusion boundary (mm) Fig. A. 33 (1) Vickers hardness of cross section of sample C MITSUBISHI HEAVY INDUSTRIES. LTD. 0.15 Page 117 of 484 S023-617-1-M1415, Rev. 0

(A-65) Document No.L5-04GA440 (0) )k Attachment-A Stainless steel clad UT indication LAS 0 I (0 C (U C0 02 C-) 600 500 400 300 200 100 0 LAS Stainless steel clad L -15 -10 -5 0 5 10 Distance from fusion boundary (mm) 198 206 210 206 226 205

217, 232 195 272 264 214 206 208 230 245 264

.312 338 500 500 400 300 200 > 00 I Enlarged LAS +4-Stainless ste.. el clad 4~S ~ 210

212, 225 1.98 229 205

,197 207 ' 214 1199 230 211 '211. 234 0 -0.15 -0.1 -005 0 0.05 Distance from fusion boundary (,-) 0.1 0 15 Fig. A. 33(2) Vickers hardness of cross section of sample C (Continued) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 118 of 484 S023-617-1-F01415, Rev. 0 (A-6S) Document No.LS-04GA440 (0) ________________________________ ~ A"~hmen~A Stainless steel clad UT indicat ion LAS 600 500 in LAS ~ ~ Stainless j steel clad 8 400 J: <J) <J) Q) c 300 'E L <J).. Q) 200 .::s< () / a..... r~~ 100 0 -15 -10 -5 o 5 10 Distance from fusion boundary (mm) , 205

  • 214.

- 198 217.

  • 206 I
  • 206
  • 23>2
  • 208 y

1 Enlarged 210 \\ \\ 600 , 230 '

  • 195 LAS Stainless

~ ~

  • 206
  • 245
  • 272
  • 226
  • 264
  • 264 g

ci > I.. 500 400 !\\ steel clad , ~

  • 238 354

.312.338 .428~ '334 .~ sot.~98 444 432 444 46-4 ;Q3 -§Q3:.~~ 300 ~ ~ 200 , 1 ~r~- ~ ~ 210 . 205 4.57

  • 197

~ 207

  • 214 t 100 I

'('L " 199 " 230

  • ~.1.,!.
  • ,J.1~i"
,,~

..'~ <Il~ .' ~1}~.~ ' 22~ ' ~J.7~ ';: ~ ~34 /.~~/

  • 198

.~ 229 ":j 'Yo.

  • 233

-0.15 -0. 1 -0.05 0.05 Distance from fusion boundary (mm) Fi g. A.33 (2) Vickers hardness of cross section of sample C (Continued) MITSUBISHI HEAVY INDUSTRIES, LTD. 0.1 0.15 Page 118 of 484 S023-617-1 -M141 5, Rev. 0

(A-66) Document No.L5-04GA440 (0) A-Attachment-A Analyzed position in cross section Stainless steel clad Stainless steel clad Crack / (Colored zone) LAS IN*---*1-Ch2 C-1 Au LIF Fe 4000 2000 Fe 0 mm 0. I I I I I I i I I I I i i I I I I I I I I i i i I I I I I 00

0. 10
0. 15 0.20
h5 PETJ
r

,4000 L I I I II I I I I Crol mm

0. 00
0. 10 R. 15

= I -h3 ,IFH N I I I I I I i I I I I I I I I I I I I I I Nij mm 0160

0. 10
0. 15 0.20 Ch4 LDE2H C

Effect of resin in crack 0.00 0.05 I6. 0.10 0.115

0. 20 The result of C is for reference. The sample was evaporation coated with Au.

Fig.A.34(1) EPMA line analysis of Cross Section of sample C Page 119 of 484 S023-617-1-M1415, Rev. 0 Analyzed pos it Sta in less steel clad ('.t ) t> I .:I l.-x "-I. ".l cross sect ion Sta inless steel clad Cr ack / (Co I or ed zone) LAS .~. Ch2 C-l Au LIF '-'--'--'--'-'--'--'--'-'--'--'--'-'--.--.-'r-.--.--.-~ Fe Fe mm Ch5 PET J Cr Cr mm Ch3 L1FH Ni Ch4 LDE2H C mm C O1m 6888 ./"...,... """....... ~..... ~'~.,.,........,...~ 4888 --".."...~~..,.,...,--.,........... ~r-.( 21388 8 8.88 8.85 8.18 8.15 0.20 6888 I I I I I I I I I I I I I I I I I I I 'l888 r

  • __ ""'V* __

'*''~I~~. 28881- ~ \\. 8 I I I I I I I I I I I 1 13.08 8.135

8. 18 0.15 8.28 888 Effect of resin in crack ~

Ifr\\ 488 7/I'~IJVi~"W~'ttI'1t~:..ty.~~"'~"~W~'y...r '( ~ .... ~~\\";.h'I'f.... ~",,f'>>i'1" The result of C is for reference. The sample was evaporation coated with Au. Fig.A.34(1) EPMA line analysis of Cross Section of sample C Page 119 of 484 S023-617-1-M1415, Rev. 0

(A-67) Document No.L5-04GA440 (0) Stainless steel clad o LAS Attachment-A 4 A Analyzed position Fn cross section Stainless steel clad Stainless steel clad (Colored zone) LAS Ch2 C-2 Au L IF I I I I I Fe 6000 4000 2000 Fm* 0 I I I ][ [ I I I I I 8.00 0.05 0.10 0.15 0.20 -5 A-ChS PETJ Cr 4000-2000 mm 0I.00 0.05

0. 10
0. 15 0.20 Ch3 LIFH Ni Ni mm 0.20 Ch4 LOE2H C

I I I I F I I I I I I I I I I I F I I I I F I F Cp MrFl 00

0. 10
0. is 0.20 The result of C is for reference. The sample was evaporation coated with Au.

Fig.A.34(2) EPMA line analysis of Cross Section of sample C (Continued) Page 120 of 484 S023-617-1-M1415, Rev. 0 (A-67) Document No.LS-04GA440 (0)

TI~~~~m~~-~==~=~~E----.

Att~hmen~A ~ LAS Ch5 PETl Cr Ch3 L1FH Ni Ch4 Ni mm LOE2H ( c mm Analyzed posit ion In cross section Stainless steel clad Stainless steel clad (Colored zone) LAS (, R..

.~ 4

~~.r_--------------- 6000 4000 2000 4000 0 0.00

0. 05
0. 10 0.1 5
0. 20 800 The result of C I S for reference. The sample was evaporat ion coated with Au.

Fig.A.34(2) EPMA line analysis of Cross Section of sample C (Continued) Page 120 of 484 S023-617-1-M1415, Rev. 0

(A-68) Document No.L5-04GA440 (0) wmjttachment-A Stainless steel Fillet weld clad C Top p-Divider plate D B Bottom 1 A butter ing 9004-- P15 270' L~ter ing in less eel clad I'3111 4 5 I 7I I 2 3 4 5 uI d11 ll 9III II 3 4 .5.. Fracture surface (direction A) 6 k 2 3 4 5 6 7 8 4 fl 2 3 4 5 6 7 0 WU.) 1 2 3 4 5 6 a 6 9~2 4 5 6 7 a 9j J 110) 4, 5 6 7 a 4 irbI, 2 3 Machined surface (direction B) 90o,-- 270' Surface of 152 buttering and stainless steel clad (direction C) dUliI I8 uriduu kUir[ULIU1I U) Fig.A.35 Appearance of sample D MITSUBISHI HEAVY INDUSTRIES, LTD. Page 121 of 484 S023-617-1-M1415, Rev. 0 (A-68) Document o.LS-04GA4-W (0) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~_ ~naChmen~A 90°.-- 90°.-- Top I Bottom Sta i n less stee I clad Fillet weld C I ' D. _//{/ ----. Divider plate D ,..--",---1"'-"-----.:- - B q ¢:=J A buttering Fracture surface (direction A) Machined surface (direction B)

. 270°

. 270° Surface of 152 butter ing and stain less steel cl ad (direction C)

Fig.A.35 Appearance of sample 0 MITSUBISHI HEAVY INDUSTRIES, LTD. Page 121 of 484 S023-617-1-M1415, Rev. 0

(0 r'.3 -_j to 9 Cl-I N) 0~ Cl) C I m C Divider plate COe Stainless steel clad by ESW 20ram CD (a) Appearance of fracture surface C,) CD CD 152 buttering Stainless steel clad by ESW / C') 0 CD) 4-1 CD \\\\\\\\x--ý \\ Stainless steel clad by SMAW-(b) Schematic illustration of fracture surface Fig.A.36(1) Appearance of fracture surface (Schematic illustration) 0 C (t~= 2 (~ LJ OJ lO CD I m N N

5i 0 z

~ 0 CO C ~ C/l -i 22 m .C/l r -i ~ (j) 0 N W I Q) -..j I........ I ~ ~ U1

0 CD

~ 0 <.0 q (a) Divider plate Appearance of fracture surface 152 buttering N -.J q 20mm l\\------~~~----{ Stainless steel clad by ESW Stainless steel clad by ESW (b) Schematic illustration of fracture surface Fig.A.36(1) Appearance of fracture surface (Schematic illustration) U1 N C'O (I) (I) (I) rt C'O C'O C"> - a.. o o (') c 3 (b

J

152 buttering Stainless steel clad by ES,/ Stainless steel clad by ESW \\4-- Stainless steel clad by SMAW -- c% (Q C: 0 D-0 CI)Al --4 -44 Vr) CO o V 2-4--- 5Fig.A.36(2) Appearance of fracture surface 10mm> C) ""0 ru (Q CD -\\. N W 0...... ~ (X) ~ (j) 0 N W I (J) -\\. -4 I -\\. I ~ -\\. ~ -\\. U1 AI CD < 0 Stainless steel clad by ESW s::

t (J) c co 0;
x::

m >> ~ Z 0 C (J) -i

0 m sn r -i

!=' 152 buttering Stainless steel clad by ESW Fig.A.36(2) Appearance of fracture surface o o (") t:: 3 (l>

l

000 (j) C:cj I I mol (b) Appearance of fracture surface of channel head body after removal of sample r- -I Divider plate Penetration shape of 152 buttering Penetration shape of -Penetrat ion shape P of n Penet rat ion shape o stainless steel clad by ESW stainless steeel clad byy ESW Channel head body (c) Schematic illustration channel head body after removal of sample Fig.A.37(1) Appearance of fracture surface of channel head body after removal of sample s: !:i en c lJ CD ru Cii (Q

S CD
r:

m I\\.) >> ~ ~ 0 z ~ 0 CO C ~ en -i

0 i'ii S/J r -i 0

(f) 0 I\\.) W I en ---.J I...... I s:: ~ (J1

0 CD
=::

0 (b) Appearance of fracture surface of channel head body after removal of sample Divider plate Penetration shape of 152 buttering Penetration shape of stainless steel clad b ESW Penetration shape of stainless st~clad by SMAW stainless steel clad by ESW Channel head body (c) Schematic illustration channel head body after removal of sample Fig.A.37(1) Appearance of fracture surface of channel head body after removal of sample o o o c:

3 ro

4M MCD CL CD rt 0 C1 C -D CD -:3 a)C t...on shape by ESW 20mm 0 C-C) 0 Fig.A.37(2) Appearance of fracture surface of channel head body after removal of sample -=* (A-72) Document NO.LS-04GA440 (0) ___ ~~~=~~~ ____ ~~~~~~~~_________

  • Att~hmen~A

" stainless ~I ~I Enlarged CIl C. E t'a III 0 iij 0 E CIl...... CIl iI: t'a "C 0.c "C t'a CIl ..c:: ~ c: c: t'a ..c:: Co) Center of rtl17. Enlarged _#~f~ 0 divider plate- ~~!~~f ' 0 I ~ ~; L' " ~~ CIl '~ ~( Co) t'a 1: = III CIl... = Co) t'a... 0 CIl Co) c: t'a... t'a CIl Q. Q. N r::- M ~ Cl u:: ~1Dfl\\<<'tr'~~ .l ~,,'f '.. L\\J.' ~*f~ Enlarged

  • MITSUBISHI HEAVY INDUSTRIES, LTD.

Page 125 of 484 S023-617-1-M1415, Rev. 0

(A-73) Document No.L5-04GA440 (0) AAýAttachment-A S-t-a _nies te~e Iala a Oh-by ESW dad by SMAW flptnil nhRervntinn of IncnAtinn A Enlarged ] Enlarged I -A-1 Enlarged I C:_ I Dendrite boundary like or grain boundary like pattern Quasi-cleavage fracture surface Fig.A.38(1) SEM observation of fracture surface of sample D (152 buttering) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 126 of 484 S023-617-1-M1415, Rev. 0 Detai I observation of location A (A-73) Document No.LS-04GA440 (0)

--__________ ~A ttachme n t-A Dendrite boundary like or grain boundary like pattern Quasi-cleavage fracture surface Fig.A.38(1)

SEM observation of fracture surface of sample 0 (152 buttering)

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Page 126 of 484 S023-61 7-1-M1415, Rev. 0

(A-74) Document No.L5-04GA440 (0) A

ttachment-A 3

plflt W2 b~t.ýf F~E7 oca. \\ 7 lad o by SMAW Location for SEM observation (stainless steel clad by SMAW) notn i I nhzPrx/nt inn n~f I nnnt i nri R nlptq i I nh_,zrvr~it inn of I nnt inn r. I rl J I I:* I ^.

  • ^,.I I

C-1I-A Quasi-cleavage fracture surface Ductile fracture surface Fig.A.38(2) SEM observation of fracture surface of sample D (Stainless steel clad by SMAW) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 127 of 484 S023-617-1-M1415, Rev. 0 (A-7-l) Document o.L5-04GA440 (0) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~_~ttachmen~A Location for SEM observation (stainless steel clad by SMAW) Detai I observation of location B Deta i I observat i on of I ocat i on C Quasi-cleavage fracture surface Ductile fracture surface Fig.A.38(2) SEM observation of fracture surface of sample D (Stainless steel clad by SMAW)

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Page 127 of 484 S023-617-1-M1415, Rev. 0

(A-75) Document No.L5-04GA440 (0) ~Attachment-A 25 b t -,6We, plate ýIo bY E W-Location for SEM observation (boundary between 152 buttering and stainless steel clad Detai I observation of location D ýa I T Enlarged Enlarged Ductile fracture surface Fig.A.38(3) SEM observation of fracture surface of sample D (boundary between 152 buttering and stainless steel clad by SMAW) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 128 of 484 S023-617-1-M1415, Rev. 0 (A-7S) Document No.LS-04GA440 (0) ________________________________ ~tt~hmen~A il lness see c ladby ESW Location for SEM observation (boundary between 152 buttering and stainless steel clad Deta i I observat i on of I ocat ion 0 Enl.ar; e!.1""", -,~,~ Ductile fracture surface Fig.A.38(3) SEM observation of fracture surface of sample 0 (boundary between 152 buttering and stainless steel clad by SMAW) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 128 of 484 S023-617-1-M1415, Rev. 0

(A-76) Document No.L5-04GA440 (0) Aj: ttachment-A D~d~ pI~t 6.. 1 Location 4--- 1 Location for SEM observation (stainless steel clad by ESW) Detail observation of location E L-E-1 w -I L-E-2t Enlarged Enlarged Enlarged Dendrite boundary like or grain boundary like Quasi-cleavage fracture surface Fig.A.38(4) SEM observation of fracture surface of sample D (Stainless steel clad by ESW) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 129 of 484 S023-617-1-M1415, Rev. 0 (A-76) Document No.LS-0-lGA-l40 (0) ____________________________ ~~ ~~men ~ A clad by ESW) Deta i I observat i on of I ocat i on E Dendrite boundary like or grain boundary like Quasi-cleavage fracture surface Fig.A.38(4) SEM observation of fracture surface of sample 0 (Stainless steel clad by ESW)

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Page 129 of 484 S023-617-1-M1415, Rev. 0

(A-77) Documnent No.L-5-04GA440 (0) %: Attachmient-A O~,dc~ Dial 152 W-,*Mml lt3In 3 observation (stainless steel clad by ESW) Detail observation of location F ICrack Enlarged,

7 Enlarged I

Enlarged Crac Ductile fracture surface Fig.A.38(5) SEM observation of fracture surface of sample D (boundary between 152 buttering and stainless steel clad by ESW) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 130 of 484 S023-617-1-M1415, Rev. 0 (A-77) Document o.LS-04GA440 (0) ________________________________ ~ ~~me n ~A Location for SEM observation (stainless steel clad by ESW) Deta i I observat i on of I ocat i on F En I arged ~ ~. ~...; - *,T -1" ~-;;. Cr a _______._--_._~~~;_:__: 1 Ductile fracture surface Fig.A.38(5) SEM observation of fracture surface of sample D (boundary between 152 buttering and stainless steel clad by ESW)

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Page 130 of 484 S023-617-1 -M1415, Rev. 0

(A-78) Documnent Nio.L-5-04GA440 (0) AL Attachmient-A Divi 152 buttering Stainless steel Stainless steel clad by 152 buttering uross section Tor ooservatiuon 20m Detail observed location Detail observation of location B Detail observation of location A MON Enlarged niargea r Enlarged lzilargeu L , L N I r/ Y Q~oyreq zone 14PI Fig.A.39(1) Microstructure observation of cross section of sample D (Stainless steel clad by SMAW) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 131 of 484 S023-617-1-M1415, Rev. 0 (A-78) Document No.LS-04GA440 (0) ________________________________ ~ttKhm~~ A Detai I observation of location A I . I I ~/ Cross section for observat ion 2011111 Detai I observed location Detai I observation of location B \\ \\ I \\' \\ j \\ I Fig.A.39(1) Microstructure observation of cross section of sample 0 (Stainless steel clad by SMAW)

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152 butter i ng Sta in less steel \\ Page 131 of 484 S023-617-1-M1415, Rev. 0

(A-79) Document No.L5-04GA440 (0) A* Attachment-A -152 buttering Stainless steel clad a Ld I ri I t:56 b Lt:t: I U I dU 152 buttering Cross section for observation 20n Detai I observed Detail observation of location D Detail observation of location C Stainless yt steel clad b 152 buttering Enlarged Enlarged / White zon Crack propagated near boundary between 152 buttering and stainless steel clad. Crack opened widely. Fig.A.39(2) Microstructure observation of cross section of sample D (152 buttering and boundary between 152 buttering and stainless steel clad) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 132 of 484 S023-617-1-M1415, Rev. 0 (A-79) Document No.LS-04GA440 (0) _~~_~~ _________________________ ~ n~me n~A Sta in less stee l clad 152 buttering Detai I observation of location C Stainless by \\ 152 buttering steel clad ~ + Enlarged Crack propagated near boundary between 152 butter i ng and sta i n less stee I c I ad. Crack opened widely. Cross section for observation 20rrm Detai I observed Detai I observation of locat ion 0 / 152 buttering Stainless steel clad Fig.A.39(2) Microstructure observation of cross section of sample 0 (152 buttering and boundary between 152 buttering and stainless steel clad)

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Page 132 of 484 S023-617-1-M141 5, Rev. 0

Divi (A-80) Docunient No.L5-04GA440 (0) )* Attachment-A 152 buttering Stainless steel clad Stainless steel clad 152 buttering Gross section for observation2o0mm by ESW \\ Detai I observed Detail observation of location E Detail observation of location F E l g Enlarged Enlarged F-7 Enlarged i I I 20um Fig.A.39(3) Microstructure observation of cross section of sample D (Stainless steel clad by ESW) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 133 of 484 S023-617-1-M1415, Rev. 0 (A-80) Document No.L5-04GA440 (0) ___ ~-~--------------------------~tt~men~A Sta i n l ess stee I c I ad 152 buttering Cross section for obs ervat ion2o~ Detai I observed Detai I observation of locat ion E Detai I observation of locat ion F + Enlarged 152 butter i ng Stainless stee I c I ad i I ,-----11 + Enlarged Fig.A.39(3) Microstructure observation of cross section of sample 0 (Stainless steel clad by ESW) .r

MITSUBISHI HEAVY INDUSTRIES, LTD. -----------

Page 133 of 484 S023-617-1-M1415, Rev. 0

(A-81) Document No.L5-04GA440 (0) )AA ttachment-A 152 buttering Stainless steel clad Stainless steel clad 152 buttering A.. Cross section for observation 20mm tail observed location Detail observation of location H Detail observation of location G Stainless steelI clad by ESW 152 buttering ý Enlarged Enlarged Enlarged between 152 buttering and stainless steel clad. / Fig.A.39(4) Microstructure observation of cross section of sample D (152 buttering and boundary between 152 buttering and stainless steel clad) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 134 of 484 S023-617-1-M1415, Rev. 0 Detai I observation of location G Stainless ste~l~ clad by ESW ~ 152 buttering Cross section for observation Detai I observed location Detai I observation of location H butter ing Stainless steel clad ... Enlarged ... Enlarged between 152 buttering and stainless stee I c I ad. ... Enlarged Fig.A.39(4) Microstructure obse cross s sam (152 buttering and boundary between 152 buttering and stainless steel clad)

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J Page 134 of484 S023-617-1 -M1415, Rev. 0

(A-82) Documnent No.L5-04GA440 (0) )k Attachmient-A Di 152 buttering Stainless steel clad Stainless steel Iro I*.IL buttering Cross section for hardness test 20mm Line of hardness measurement (Stainless steel clad by SMAW) Lq w, 600 500 400 300 200 100 Stainless steel clad by SMAW AL Load: 500g 0 Load: 2g 0 0_ 2 I Enlarged 4 6 8 10 12 Distance from crack (mm) CC 6 T C 40 -C U 4) 600 500 400 300 200 100 Stainless steel clad by SMAW A Load: 500g

  • Load: 2g 253

'272

  • 265 298 254 267 265,- 285

- 316 295' T7 Q 305 286 269

285, 334 389 35 0

0 0.1 0.2 0.3 Distance from crack (mm) 0.4 0.5 Fig.A.40(1) Vickers hardness of cross section of sample D (Stainless steel clad by SMAW) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 135 of 484 S023-617-1-M1415, Rev. 0) (A-82) Document No.LS-04GA440 (0) _______________________________ ~tt~men~ A 152 buttering Stainless steel clad Stainless steel Cross section for hardness test 20mm N 0 0 a I c 1: ..c. ~ l) 600 500 400 300 200 100 o Line of hardness measurement (Stainless steel clad by SMAW) 600 ~ Stainless steel clad by SMAW 500 Ln a D. Load: 500g

> 400 I

vi

  • Load: 2g I

Ul C1J c 300 -0 I... ro -c Ul 200 I... ~~~b- ~ ~ ~ C1J ~ tl 100 0 0y 2 4 6 8 10 12 1 Enlarged Distance from crack (mm) ~ Stainless steel clad by SMAW f-- D. Load: ~-

  • Load :

500g 2g

  • 253. 272
  • 305
  • 265
  • 298
  • 286
  • 254
  • 267
  • 269

~. ~ ~ ~ 265

  • 285
  • 285

'\\ t ,.f \\. ~* 316 '* 295 ' 334 ' " \\ .,/ o 0.1 0.2 0.3 0.4 0.5 Distance from crack (mm) Fig.A.40(1) Vickers hardness of cross section of sample D (Stainless steel clad by SMAW)

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Page 135 of 484 S023-617-1-M1415, Rev. 0

(A-83) Document No.L5-04GA440 (0) ,kAttachment-A 152 buttering Stainless steel clad Stainless steel 1 -4 A,, CUAW 152 buttering Cross section for hardness test 20mm Line of hardness measurement (152 buttering) LC) 0 I U, U) -c U, 0 600 500 400 300 200 100 152 buttering A Load: 500g

  • Load: 2g I-0 0

5 10 Distance from crack (mm) 15 20 Enlarged 5 7 c 600 500 400 300 200 100 152 buttering White zone A Load' 500g 0 Load, 2g '256. 271 '271 '262. 290 297 33& 280 275 286. 340 2 91 2 2-77 9 310 0 0 0.1 0.2 0.3 Distance from crack (mm) 0.4 0.5 Fig.A.40(2) Vickers hardness of cross section of sample D (152 buttering) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 136 of 484 S023-617-1-M1415 I Rev. 0 (A-83 ) Document o.LS-O'+GA440 (0) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~_ ~ nachmeru-A Stainless steel Cross section for hardness test 20mm 600 N 500 0 0 d :> 400 I vi '" " 300 c l' J:: ~ 200 100 0 0 G a I vi til Q) c -c ro til... Q) .::t:. () 600 Line of hardness measurement (152 butter i ng)

  • 152 buttering

!:::. Load : 500g 500 400 300 200 100 o I 'AA -u-~ u o y 1 Enlarged A. 5 152 butter i ng

  • Load: 2g

.A .A Acr./l,_~ ~ ~ 10 15 20 Distance from crack (mm)

  • 256. 271
  • 271 White zone

!:::. Load : 500g

  • '262. 290
  • 297 J'.
  • 33&. 280 ~ 215
  • 28,6. 340
  • 291
  • 2Jf~. 'l71'
  • 2~2.

j I \\

  • z94 "of I'
  • e9T I. 316
  • Load : 2g 0.1 0.2 0.3 0.4 0.5 Distance from crack (mm)

Fig.A.40(2) Vickers hardness of cross section of sample 0 (152 buttering) ~---------- MITSUBISHI HEAVY INDUSTRIES, LTD. 152 butter i ng Stainless steel clad Page 136 of 484 S023-617-1-M1415, Rev. 0

Divi (A-84) Document No.L5-04GA440 (0) AkLAttachment-A 152 buttering Stainless steel clad Stainless steel clad 152 buttering Cross section for hardness test 20u__ Line of hardness measurement (Stainless steel clad by ESW) 600 500 m 400 -D 300 LO 200 100 Stainless steel clad by ESW A Load: 500g

  • Load:

2g 0 0 2 { Enlarged 4 6 8 10 12 Distance from crack (mm) 600 500 C 400 = 300 200 100 0 Colored zone Z Stainless steel clad by ESW A Load: 500g Load: 2g 322 351 365 234 291 3a42 322 353 315 318 317 304 - 380 308 296 293 0 0.1 0.2 0.3 Distance from crack mram) 0.4 0.5 Fig.A.40(3) Vickers hardness of cross section of sample D (Stainless steel clad by ESW) MITSUBISHI HEAVY INDUSTRIES, LTD. Page 137 of 484 S023-617-1-M1415, Rev. 0 (A-84 ) Document NO.L5-04GA440 (0) _______________________________ ~n~hm en~A Stainless steel clad Cross section for hardness test 20mm 600 N 500 o o 6 :> 400 I Ul ~ 300 ~ .c ~ 200 Q) u

> 100 o

Ln 0 :> I Cti (f) Q) c " l... I1J ..c (f) l... Q) .:s:. u 600 500 400 300 200 100 0 ~ o y 1 fIfo I ored zone ~J.~ Line of hardness measurement (Sta in less steel clad by ESW)

  • Sta inless steel clad by ESW

/::,. Load : 500g

  • Load : 2g

~ L.ILJ> L.l 2 4 6 8 10 Distance from crack (mm) Enlarged Stain less steel clad by ESW 322 ' 142 I /::, Load: 500g 351

322
  • Load : 2g 365 353 1

~ 234 315 291

  • 318 o

0.1 0.2 0.3 0.4 0.5 Distance fr om crack (mm) 12

  • 304
  • 380 308
  • 296
  • 293 152 buttering Stainless stee I c I ad Fig.A.40(3)

Vickers hardness of cross section of sample 0 (Stainless steel clad by ESW)

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Page 137 of 484 S023-617-1-M1415, Rev. 0

Divider plate Fillet weld C op 4 T Stainless steel clad 7ýB '0 I Bottom D 152 0-- ,+/- NJ CDl CI C: C/) I-- H (a) Fracture surface (direction A) C,, maonineu 6uriace kUIreGLIori U) 0 N.) 0) C) 0) Cr, C 0 B r ~ B ~ 0 00 Machined surface (direction D) Fig.A.41 Appearance of sample E Top 1 0 Cl.. ro Bottom LJ ill <.0 CD I m w ~ (Xl 0 z - 0 ~ c (Xl CJ) ~ -I

0 iii sn r -I

~ (f) 0 N W I 0) -.J I -" I s.: ~ U1

u CD <

0 Divider plate Fill et we Id C "k D q Stainless steel clad B ¢:J Machined surface (direction B) Machined surface (direction D) Fig.A.41 Appearance of sample E <J1 N en o o (") c: 3 ro

CE' ('0 0-tin C,, Ccu C/ m (a) Appearance of fracture surface (D -D, z Divide 0 C: C', er plate 152 buttering I Stainless steel clad by ESW Stainless steel clad by ESW j Stainless steel clad by SMAW (b) Schematic illustration of fracture surface Fig.A.42(1) Appearance of fracture surface (Schematic illustration) C C 2 C H. >5 ~ CD s:: =i C/l c CD lJ en ~ ;E (j) ffi }> ~ ~ C1 0... CD '0 8, § 0 i v i der p I ate .J:>. c (Xl C/l 1 .J:>. -i

u iii sn r -i c:J (j) 0 tv

<..V, (j) -...j, , s: .J:>. (Jl

u (j) 0 (a) Appearance of fracture surface 152 buttering Stainless steel clad by ESW Sta inless steel clad by ESW Stainless steel clad by SMAW (b) Schematic illustration of fracture surface Fig.A.42(1)

Appearance of fracture surface (Schematic illustration) 0-C <..T1 r+ N r+ CD o o n c 3 (1) a

Divide Il r plate 152 buttering I Stainless steel clad by ESVi I Stainless steel clad by ESW Stainless steel clad by ESW Stainless steel clad by SMAW 4-LC) C: Ch) m Cd) m mI ad by ESW We I di 2 2 -'~-~ r~ 7~~OO Fig.A.42(2) Appearance of fracture surface "'U Q) (Q ('l) ~ 0 0...... ~ ex> ~ (f) 0 IV (.0, (J) -..j, 5:: ~ U1

0

('l) 0 Divider plate s::: =i en c CD en ~ I m > ~ Z 0 c en -t

0 iii y>

r -t c:J 152 buttering Stainless steel clad by ESW Stainless steel clad by SMAW Fig.A.42(2) Appearance of fracture surface Stainless steel clad by ESW o o () c 3 ~

?

Divider plate 0) 4-(0 152 buttering IL I L Stainle 3s steel clad by ESW Stainless steel clad by ESW C: Cl) m C C,, -4i m ýC/ m CO 0-Stainless steel clad by SMAW U CD =3 z L) 0 lOmm Fig.A.42(3) Appearance of fracture surface

s::

=l CIJ c w "U Ui ru ~ en (j) I m ~ >> ~ ~ 0 Z -+. 0 ~ C ()) CIJ ~ -i

u iii Y'

r -i 1;:1 en 0 rv 0J, 0'> ~ -...j, ~ , s: ~ U1

u (j) 0 Divider plate I

I N -..J o o Stainle s steel clad by ESW 1 152 butter i ng I

+. ~

o ~~ St_a_in_le_s_s_st_e_el_c_l_ad~bY_E_S_W ________ ~/ Stainless steel clad by SMAW 10mrn Fig.A.42(3) Appearance of fracture surface

Divide At r plate N) 152 buttering i Stainless steel clad by ESW Stainless steel clad by ESW / Stainless steel clad by SMAW -1i CO m 0 C-() -I !:n I CD 0-] Cl) 0 N.) o0) (D 0 C 02 ~C) 2 4---~ (~z 0 00 1 OITIm Fig.A.42(4) Appearance of fracture surface 3: en c ID ""'0 Cii ru ~ (0 CD I m ~ ~ N 0 Z - 0 ~ C co en ~ -i

0 iii 0

r -i c:J (f) 0 N v..> I 0'> -..j I I 5: ~ (J1

0 CD

~ 0 ivider plate 152 butter i ng I l ~ _______ S_t_a_i_n_le_s_s_s_t_e_e_l_c_l_a_d_b_Y __ ES_W __________ i==~ =~ ~~,~~.~~~~~~~~~~~~=~~ -~4- . ___________ S_t_a_in_l_e_s_s_s_t_ee_l __ c_la_d __ b~Y_E_S_W __________ ~/ Stainless steel clad by SMAW m 1

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100m Fig.A.42(4) Appearance of fracture surface o o (') c 3 <1>

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Divider plate o:. Io .4 Q0 9 152 buttering I Stainless steel clad by ESW Stainless steel clad by ESW C,, C,) 0 M, Stainless steel clad by SMAW m CO 02 m Small chip on bead >D IOmm Fig.A.42(5) Appearance of fracture surface -U ru to CD ~ w 0...... ~ (Xl ~ (f) o IV W I (J) --J I -" I s;:

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o Divider plate I Stainless steel clad by ESW ~ =i en c !D en ~ 152 butter i ng Stainless steel clad by SMAW 1 m

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Fig.A.42(5) Appearance of fracture surface Stainless steel clad by ESW Sma I I chip on bead 10mm 2rt1T1 o o (") c 3 CD

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(a) Appearance of fracture surface of sample C/, C: ca Q) "l CDmo OD C,) -9(b) Appearance of fracture surface of channel head body after removal of sample 50mm rn r-o

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N) 152 butteringb oy Stainless steel clad by ESW \\'Stainless steel clad by SM Stainless steel clad by ESW Channel head body E ~,> (c) Schematic illustration channel head body after removal of sample 24--> (D 5 Fig.A.43(1) Appearance of fracture surface of channel head body after removal of sample ~

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a (a) Appearance of fracture surface of sample (b) Appearance of fracture surface of channel head body after removal of sample Divider plate 152 buttering Stainless stee l clad by ESW Stain less steel clad by SM Stainless steel clad by ESW Channel head body (c) Schematic illustration channel head body after removal of sample Fig.A.43(1) Appearance of fracture surface of channel head body after removal of sample 50mm N -.J q o o (") <= 3 (1)

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r"- r-+ Penetration shape by [SW Penetration shape by ESW CD co:3 cPenetration shape by SMAW 50mC 030 Pentraio shp APntainsaeb S n---I 0 r+ CC M CD m c-Ho p© 0 >,C 15mm 4 C.~~ A 2 U*..* I Ippedaraned UI Irr;L[ur[ su[aI(e l chi~annilel head body arfer removal ot sample lJ ru (Q CD .l:>- (Jl 0 -- .l:>- 0> .l:>- (J) o N W I (J) -.j I I s:

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~ "C 0 rl" (1) a.. (1) Penetration shape by SMAW U U a.. a.. Fig.A.43(2) Appearance of fracture surface of channel head body after removal of sample 0-c: rl" rl" (1) ~ (]Q 50mm U () a.. a.. 15mm --i

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