January 2002

Special Report: Maintenance/Reliability

Retrofitting multijack tensioners on a combustion gas turbine generator

Consider this technology for difficult bolting applications

Al-Mohssen, H., Saudi Arabian Oil Co.

Global competition has been moving the hydrocarbon processing industry to ever-higher levels of efficiency and production rates. This has led to an increased demand on both equipment and manpower to produce higher reliability and shorter turnaround times. One major problem faced when dealing with high-temperature and pressure equipment is its bolting and unbolting. This is due to the very large torque required to properly seal the joint and the difficulty of its application, especially in the field. One of main gas turbine generators in a large refinery has been notoriously known for being very hard to bolt and for developing leaks when bolted. A number of methods are availabl

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