August 2003

Special Report: Fluid Flow and Rotating Equipment

Hazardous situations created by improper piping analyses

Some computer programs do not handle hot condition calculations correctly

Peng, L. C., Peng Engineering

Piping flexibility and stress analysis is required in design of most piping systems before the piping is installed in an industrial plant. It is intended to ensure plant safety and, thus, protect the interests of the owner and the general public. Due to availability of powerful software packages, the analysis has become simple and routine. However, improper piping analysis may actually create a hazardous situation rather than ensure plant safety. Improper piping analyses stem from many areas. Misunderstanding of the software approach, input errors and wrong boundary conditions from CAD data are some common ones. T

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