Use of load path dependent material fracture toughness values (WPS) in the safety analysis of RPV stade
| Autor: | G. Nagel, J.G. Blauel, R. Kienzler, T. Hollstein |
|---|---|
| Přispěvatelé: | Publica |
| Rok vydání: | 1986 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Core cooling business.industry Mechanical Engineering Structural engineering Welding Pressure vessel law.invention Fracture toughness Nuclear Energy and Engineering law Crack initiation General Materials Science Safety Risk Reliability and Quality business Waste Management and Disposal Reactor pressure vessel Path dependent |
| Zdroj: | Nuclear Engineering and Design. 94:233-239 |
| ISSN: | 0029-5493 |
| DOI: | 10.1016/0029-5493(86)90005-1 |
| Popis: | The effect of warm prestressing (WPS) has been investigated for the specific material and loading conditions of the central circumferential weld of the reactor pressure vessel of KKS under emergency core cooling. Warm prestressing results in a significant rise of effective fracture toughness. The magnitude of the WPS-effect as a function of warm prestressing, path of unloading, amount of cooling (e.g. change of yield stress) can be predicted on the basis of a theoretical model of Chell et al.. Crack initiation can be excluded for emergency core cooling (ECC)-loading and for material conditions beyond end of life for the central circumferential weld of the pressure vessel of KKS. |
| Databáze: | OpenAIRE |
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