A Program for High Temperature Structural Design Evaluation According to ASME B&PV

A structural integrity evaluation program (STEP) was developed for high temperature design evaluation according to the ASME Boiler and Pressure Vessel Code, Section III, Division 5 for high-temperature reactors. The program computerizes the evaluation procedure for primary stresses (HBB-3220) and for strain and creep-fatigue damage (HBB-T). In the evaluation, the material properties and isochronous curves for the candidate materials presented in Section II - Part D and HBB-T were computerized for high-temperature reactors. The program also computerized the weldment evaluation procedures and corresponding material properties. The program increases the efficiency of high-temperature reactor design and eliminates human error in complex hand calculation. The evaluation results from the STEP for single-cycle-type load were compared with those obtained using manual calculation with Microsoft Excel to verify the efficiency and reliability of STEP evaluations were efficient and reliable.