March 2014

Rotating Equipment

Reciprocating compressors running together—Is that a problem?

A new maintenance engineer is assigned the task of overseeing large, critical rotating equipment in a petrochemical facility (Fig. 1). In this example, the facility has vent-gas compressors that, in g..

Knight, C., KnightHawk Engineering, Inc.

A new maintenance engineer is assigned the task of overseeing large, critical rotating equipment in a petrochemical facility (Fig. 1). In this example, the facility has vent-gas compressors that, in general, run well, but sometimes fail. This system has three compressors operating in parallel. However, the associated piping is less than an optimum design, and, unfortunately, it looks like an afterthought for both the suction and discharge sections.     Fig. 1. Ethylene compressor deck. Downtime events These compressors have had a remarkable number of valve failures and, on occasion, some instrumentation connections have broken off (Fig. 2). The new maintenance engi

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