January 2001

Maintenance and Retrofitting

A case study in rapid machinery turnarounds

Here’s how several major repairs were accomplished in less than a month

Beck, R., Turbocare; Johs, D., Shell Chemical

A rapid major turbomachinery turnaround provided many lessons. As is so often the case, timing - or lack of time - was the driving force in this outage. Business conditions dictated 28 days stream-to-stream, which allowed 21 days for equipment maintenance. Equipment overhauled and upgraded included five centrifugal compressors, one large steam turbine and a reciprocating compressor. Also included in the worklist were typical PM activities on four lube sets, three turbines and two centrifugal compressors. The actual outage was the culmination of planning that spanned an entire year and consumed thousands of man-hours. All

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