February 2018

Maintenance and Reliability

Evaluate structural stiffness for piping stress analysis

Hydrocarbon plants use a system of pipes of various sizes, pressures and temperatures. Sometimes these pipes have pulsating flows that result in piping system vibration. These piping systems must be designed for a high degree of reliability, which requires a comprehensive piping stress analysis for thermal, sustained, occasional and dynamic loading conditions.

Choudhury, M. G., Tripathi, R., Reliance Engineering Group (REG)

Hydrocarbon plants use a system of pipes of various sizes, pressures and temperatures. Sometimes these pipes have pulsating flows that result in piping system vibration. These piping systems must be designed for a high degree of reliability, which requires a comprehensive piping stress analysis for thermal, sustained, occasional and dynamic loading conditions. In addition, all piping systems must be supported by structural support systems. Generally, during the computer analysis of a piping system, a high stiffness value is considered by default. However, in reality, that is not the case. In this article, the effect of structural stiffness on analysis results is explained through case studi

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