August 2011

Special Report: Fluid Flow and Rotating Equipment

Decrease vibration in piping with reciprocating compressors

Case study identifies problems in new compression unit

Choudhury, M. G., Reliance Engineers Associates Ltd.; Tripathi, R., BecRel Engineering Pvt. Ltd.

In the hydrocarbon processing industry, piping systems are connected to reciprocating compressors. These systems are subjected to vibrations; in many cases, the piping experiences high vibration levels due to poor design. Over the service life of the piping, many stress incidents can lead to failures such as piping components, branch connections especially small bore lines, etc. High vibration levels should be kept within the permissible limit by proper analysis approach during the initial design phase. Design approach. As per API 618 5th edition (clause 7.9.4.2), there are three design approaches for pulsation and vibration control of reciprocating compressors and connected piping sy

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