Procedures used in Sweden for safety assessment of components with cracks

摘要

The paper introduces a handbook for safety assessment of components with cracks. The handbook is intended for situations when defects are found during inspection of components and gives estimations of the risk of failure as well as the expected growth of the defect due to fatigue or stress corrosion during the evaluation interval. The handbook is easy to use and contains all necessary information needed. A Windows based PC-program is also available with a graphic module to present results in an efficient manner. Improvements are introduced for the handling of secondary stresses. In addition, a new safety evaluation system is included.