2010
DOI: 10.1080/18811248.2010.9711929
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Long-Term Integrity of Waste Package Final Closure for HLW Geological Disposal, (VI) Consistency of the Structural Integrity Evaluation Model for the Weld Joint

Abstract: Overpack, a container of high-level radioactive waste for Japan's geological disposal program, is required to prevent the sealed vitrified waste from coming into contact with groundwater for 1,000 years. This means that the same duration and function are required for the weld joint between the body and lid of the overpack. The authors have initiated studies on a methodology evaluating the long-term integrity of the lid closure, including welding tests and non-destructive examination tests, and proposed a struc… Show more

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Cited by 6 publications
(4 citation statements)
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“…2. 5,7 The objective of this model is to assure that no failures caused by weld flaws are expected to occur during the required containment period of 1000 years, by significantly reducing the positive slope of the crack growth curve (assumption 1) and the negative slope of the material strength degradation curve (assumption 2). Seven prerequisites were stated for this model, primarily for the establishment of these two assumptions.…”
Section: Structural Integrity Evaluation Model For Overpack Weld Jointmentioning
confidence: 99%
See 3 more Smart Citations
“…2. 5,7 The objective of this model is to assure that no failures caused by weld flaws are expected to occur during the required containment period of 1000 years, by significantly reducing the positive slope of the crack growth curve (assumption 1) and the negative slope of the material strength degradation curve (assumption 2). Seven prerequisites were stated for this model, primarily for the establishment of these two assumptions.…”
Section: Structural Integrity Evaluation Model For Overpack Weld Jointmentioning
confidence: 99%
“…Our proposed structural integrity evaluation model referring to the FFS assessment is shown in Fig. 2 5,7. The objective of this model is to assure that no failures caused by weld flaws are expected to occur during the required containment period of 1000 years, by significantly reducing the positive slope of the crack growth curve (assumption 1) and the negative slope of the material strength degradation curve (assumption 2).…”
Section: Structural Integrity Evaluation Model For Overpack Weld Jointmentioning
confidence: 99%
See 2 more Smart Citations