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01. |
Ignorance |
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02. |
Insufficient Knowledge |
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03. |
Poor Understanding |
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04. |
Production |
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05. |
Hardware Production |
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06. |
Production of Machinery and Equipment |
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07. |
Heat Exchanger |
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08. |
SG tube |
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09. |
Supporting Plate |
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10. |
AVB |
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11. |
Installation |
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12. |
Regular Operation |
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13. |
Nonobservance of Procedure |
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14. |
Error of Mounting Position |
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15. |
Lack of Insert Depth |
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16. |
Failure |
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17. |
Fracture/Damage |
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18. |
Flow-induced Vibration |
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19. |
Fretting Fatigue |
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20. |
Failure of SG tube |
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21. |
Usage |
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22. |
Maintenance/Repair |
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23. |
Inspection |
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24. |
Lack of Inspection |
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25. |
Failure |
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26. |
Large-Scale Damage |
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27. |
Leakage of Coolant |
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![](../dfen/DB1061010.jpg)
Leakage of primary coolant at Mihama Unit 2 due to failure of SG tube
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