Mechanical Calculation of a Storage Vessel

Mechanical verification of a pressure vessel belonging to a chemical storage system, carried out under ASME Section VIII Div. 1 (2023 Edition) despite the equipment’s original design code, construction year, and several key design parameters being unknown. Conservative assumptions were adopted for missing data, including a joint efficiency of E=0.6 (no radiographic testing assumed), a specific gravity of 1 for the stored product, zero corrosion allowance, and an estimated MDMT of -28.9°C, ensuring a safe, worst case verification. Based on these conservative premises and the field inspection report, the assessment confirmed that the vessel presents no design deficiencies, with all components remaining within the allowable stress limits of the assumed design code, demonstrating the team’s ability to deliver a rigorous mechanical verification even with limited original documentation.