Condition based maintenance for generator and transformer system

The generator and step-up transformer system is one of the most important equipment in a liquefied natural gas (LNG) plant. Reliability of this equipment is important in ensuring stable production of LNG. Thus, a rigorous, “fit for purpose” and comprehensive condition based maintenance strategy is required to ensure these equipment are properly maintained; otherwise, premature failures are possible to occur. A good condition based maintenance program will be able to assess the equipment healthiness and predict failures before happening. This paper presents the results, findings and analysis of condition based maintenance program for generators and step-up transformers system in the plant. Rectifications performed based on the findings are explained, which will serve as a guideline to maintenance engineers.