Detecting operator-induced faults on a liquid expander

M. Hastings, Brüel & Kjær Vibro

Increasing LNG production to fulfill strong market demands places a burden on assets. Such was the case for one LNG plant that thought they found a way to shorten the start-up time for liquid expanders. The result was not as expected. Fortunately, the condition monitoring system and service specialists provided diagnostic information to understand the problem better and avoid a catastrophic failure. Machine condition monitoring in an LNG plant. The production processes of LNG where the critical machines are typically monitored are shown in FIG. 1. These include liquefaction, LNG storage and loading, and power and utilities. FIG. 1. Typical LNG processes—where critical machines are monito

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