When a flaw is found in a reactor pressure vessel, piping, or other nuclear plant component, fracture mechanics calculations are used to analyze and predict flaw behavior, including crack growth rates and critical crack sizes. Structural Integrity Associates, Inc. (SI) uses deterministic and Probabilistic Fracture Mechanics techniques, including finite element analysis, to disposition flaws in a variety of materials, geometries, and applied stress fields. Specialized fracture mechanics software developed and used by Structural Integrity includes pc-CRACK©, often employed for ASME Code Section XI flaw evaluations and weld overlay design.  We also use Viper©/Viper-Noz© — developed for EPRI® by Structural Integrity — to determine probability of failure for reactor pressure vessel welds and nozzles.

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Related Software:

• pc-CRACK©

Related Webinars:

• ASME Code Section XI Flaw Evaluation for Nuclear Components
• Probabilistic Fracture Mechanics and its Applications to the Nuclear Industry

Related Training:

• Metal Fatigue & Fracture Mechanics in the Nuclear Industry

Viper and Viper-Noz are trademarks of the Electric Power Research Institute, Inc.