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The Subgroup on Evaluation Standards has responsibility for both flaw indication standards and flaw evaluation methods and acceptance criteria, for all Divisions.The components to be considered are those for which Section XI has jurisdiction.The fracture analysis methods include both elastic and elastic-plastic techniques for prediction of failure, and also consideration of subcritical crack growth due to fatigue, corrosion, or other mechanisms.
In addition to evaluation of flaws found during in-service inspection, the subgroup also has responsibility for criteria development for safe operation of nuclear plants, considering pressure boundary integrity.The subgroup is also responsible for pressure boundary integrity issues in requalification of components, and criteria for component life extension through establishing fitness-for-service.
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