Comparison of Pressure Vessel Codes: ASME Section VIII & EN13445 (Technical, Commercial, & Usage Comparison Design Fatigue Life Comparison)
standard by ASME International, 12/12/2006

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Part 1 of this report includes paper PVP2006-ICPVT11-94010, “Comparison of Pressure Vessel Codes ASME Section VIII and EN13445.” This paper consists of a comparative study of the primary technical, commercial, and usage differences between the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code Section VIII and the European Pressure Vessel Code EN13445 (EN). This study includes a review of “Comparative Study on Pressure Equipment Standards” published by the European Commission (EC) and provides technical comparisons between the code design requirements, material properties, fabrication, and contributing effects on overall cost. This study is intended to provide a broad viewpoint on the major differences and factors to consider when choosing the most appropriate vessel design code to use. Part II of this report includes paper PVP2006-ICPVT11-93059, “Design Fatigue Life Comparison of ASME Section VIII and EN 13445 Vessels with Welded Joints.” The “Comparative Study on Pressure Equipment Standards” performed by the EC included a comparison of design fatigue life of welded vessels allowed by the ASME Boiler and Pressure Vessel Code (B&PVC) Section VIII with that of the European Standard EN 13445. The allowable number cycles of the ASME Code was reported to be much larger than that of EN 13445, and, therefore, the ASME Code was regarded as unconservative for welded regions. This paper investigates the reason for the reported discrepancy between the two design codes, identifies errors in the EC calculation, recalculates the allowable cycles according to ASME Code rules and concluded that they are comparable with those of EN 13445.

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