November 2017

Maintenance and Reliability

Connecting rod failure in a new reciprocating gas compressor

Compressor failure in an oil refinery can have severe consequences on health, safety and the environment.

Zardynezhad, S., Contributing Writer

Compressor failure in an oil refinery can have severe consequences on health, safety and the environment. Due to the cost of maintenance and lack of production, it can also impact the bottom line. The following presents a practical root cause analysis (RCA) and the respective corrective action made on a large reciprocating gas compressor used for makeup hydrogen (H2) in an oil refinery. The RCA was used to establish a theory behind the failure mechanism, which resulted in a fracture of the third-stage connecting rod after operating for a short period of time. FIG. 1. Bent and fractured connection rod.3 The compressor studied is a H2-mak

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