98

7

8

1

1. 2. 3. 4.

2

DMW PZR SA508 CL2 RCS SA182 GR316 RCS RPV

3

DMW safe end

4

DMW 82/182 buttering (DMW)

5

DMW

6

(DMW)

Safe End

DMW

Nozzle7

SCC IGSCC

8

PWSCC ( 326 82/182 PWSCC SCC ) ( ( ) )

9

DMW (DMW)

spray nozzle X 1 Safety nozzles X 3 Relieve nozzle X 1 Surge line nozzle X 1 / X6

RPV

10

PWSCC 1980 Palo Verde PWSCC TMI-1

11

PWSCC 1980 Palo Verde PWSCC TMI-1

12

PWSCC

2000 2003 PWSCC

82/182

13

PWSCC 2004 5 NRC Bulletin 2004-01 Alloy 82/182/600 MRP-139 /

2005

14

PWSCC 2006 10 Wolf Creek

safety/relief/surge

2007

Duane Arnold

15

PWSCC NRC nozzle configuration (LBB, leak before break)

16

PWSCC NRC PWR 2007 RCS

/

RPV

17

PWSCC PWR (MRP-139) (MRP169) alloy 600 under pwscc conditions PWSCC

18

OVL Structure Weld Overlay Full

2009-2012 17 NDT 18 19 20

2013-2020 21 22 23 24

19

WSI

IGSCC

20

21

WSI

(1109.14) (1109.10)

22

23

10CFR50 ASME B&PV CODE Section XI Division 1 IWA-1400 IWA-1400(f) possession of an arrangement with an Authorized Inspection Agency to provide inspection services;

IWA-1400(j) performance of repair /replacement activities in accordance with written programs and plans;

24

OR (Repair weld overlay, RWOL) (preemptive weld overlay, PWOL) PSI PST,

,

25

OR

IWA-4150

IWA-4110(b) IWA-4150 MRP-169

N504 Sec XI Appendix Q N638Sec XI Appendix VIII PDI

PSI PST

IWA-4530

IWA-453026

(1) ASME Sec. XI IWA-4000 Repair/Replacement Activities IWA-4110(b) SCOPE CC / /

27

Sec. XI IWA-4000 Repair / Replacement (repair) -> PWSCC (replacement) / (modification) -> (alteration)

PWSCC

28

IWA-4110 1. (discrepancies detected during inservice inspection, maintenance, or service) (regulatory requirements change) (design changes to improve equipment service) (changes to improve reliability) (personnel exposure) (economics) (end of service life) (addition of new items or systems)29

2. 3. 4. 5. 6. 7. 8.

Sec. XI IWA-4000 R/R Authorized Nuclear inservice inspector (ANII) IWA-4170 INSPECTION The services of an Authorized Inspection Agency (AIA) shall be used.

30

IWA-4142 Repair/Replacement Organizations Quality Assurance Program The organization that performs repair / replacement activities shall establish a Quality Assurance Program for control of their activities in accordance with the Repair/Replacement Program and Plans.

31

IWA-4143 Stamping (a) Application of the ASME NPT symbol is neither required nor prohibited for the fabrication of parts, appurtenances, piping subassemblies, and supports to be used by the Owner when performed at the Owners facilities by a Repair/Replacement Organization with a quality assurance program that complies with IWA-4142. These provisions may not be used to manufacture complete pumps, valves, vessels, or tanks. (b) Application of the ASME NA symbol stamp is neither required nor prohibited for installation.

32

IWA-4150

(program)

(traveller)

33

IWA-4150

code case code case

34

IWA-4220 CODE APPLICABILITY

35

Code Cases

(Case)

Guides R.G. 1.147

Nuclear Regulatory

36

(defect) 4000 PWSCC Section XI IWA-

RPV PZR PWSCC

504-3

ASME CODE CASE N-

IWX-3640

37

IWB-3640 EVALUATION PROCEDURES AND ACCEPTANCE CRITERIA FOR FLAWS IN AUSTENITIC AND FERRITIC PIPING IWB-3514.1 analytical procedures the end of the evaluation period

38

CODE CASE N-504-3 (WPS) IWA-4000 0.035%

39

CODE CASE N-504-3

PT 1/16

40

Code Case N504 (RG1.147)

NRC

ASME Code, Section XI, Division 1, Nonmandatory Appendix Q Weld overlay repair of class 1, 2, and 3 Austenitic Stainless steel piping weldments

41

MRP-169 : Technical Basis for Preemptive Weld Overlays for Alloy 82/182 Butt Welds in PWRs

42

Nine Mile Point

1981 H

43

(PD)

44

UT U.S. nuclear utilities formed the Performance Demonstration Initiative (PDI) in 1991 ASME Code, Section XI, Division 1, Appendix VIII, Performance Demonstration for Ultrasonic Examination Systems. PDI 11 (Appendix VIII-3110)

45

Performance DemonstrationASME CODE SEC XI, Division 1, Appendix VIII

46

Dissimilar Metal Welds (PDI-UT-10) Overlay (PDI-UT-11)

47

1. Oxide Floaters : ( )

48

2. Hot Solidification Cracking ( 3. Ductility Dip Cracking

)

Ductility Dip Cracking (DDC) 52MSS)

(Alloy

49

4. Lack of Interbead Bonding : ) 5. Interface Fusion t ( NDT IF t 6. Interface Porosity

t )

(

50

Code Case N-638-4CLASS 1 GTAW( ) PWHT IWA-4400

IWA-4400

PWHT 1(a) CLASS 1 GTAW( ) 1~5 IWA-400051

CODE CASE N-740PZR IWA4410 IWA-4611 ( )

52

53

IWA-4440 (Repair / Replacement Organization RO)

(IWA-2110)

54

Code Case N504 NRC (RG1.147 Conditionally Acceptable) Sec. XI NONMANDATORY APPENDIX Q 4520, IWA-4530,

IWA-4420, IWAIWA-4600

55

3. /

NIS-2

56

80 82 82 84 93

1 11

1 15

The Hartford Steam Boiler Inspection & Insurance Company HSB

7 6 23

57

ANSI/ASME QAI-1-2005 Qualifications for Authorized Inspection AUTHORIZED INSPECTION AGENCIES(AIA) ANI( ANII( ) )

58

59

IWA-21101. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. / / / PSI ISI

investigation

60

61

NDT ( NDT

)

ASME Sec. XI Code Case N416-1

PST or PSI62

/

-> ->

-> Review (witness point) (Hold Point)

63

NIS-2 IWA-6210(e)

IWA-6210

The Owner shall prepare the Owners Report for Repair / Replacement Activity, Form NIS-2, upon completion of all required activities associated with the Repair/Replacement Plan. NIS-2

IWA-6210(f) The Owner shall submit Forms NIS-1 and NIS-2 to the Inspector and obtain the required signatures. NIS-1 NIS-2

64

Sec. XI IWA-6000 IWA-6230 SUMMARY REPORT PREPARATION IWA-6230(a) IWA-6230(c) (1) (2) (3) : NIS-1 NIS-2

65

66

mockup

67

mockup182/82 safe end

68

N-740 OR N-504 ASME IGSCC 90 4 N2C-J3 6 Code Case N-504-2 N-638-1 N-638-4 N-695 N2142-2 N-740 Code Case CODE N-638 N74069

N504-1

...

N-504Case N-504 N-504-1 Aug/9/93 RG 1.147 R14 RG 1.147 R15 August 2005 October 2007 Publish date Approved Approval by Date Remark Superseded Superseded Superseded

N-504-2 Mar/12/97 N-504-3 N-504-4 Aug/4/04 Jul/10/07

70

SEC XI OR III

71

SEC XI OR III

2007

72