Expander Field Remanent Life Analysis And Assessment.
Abstract
The operating temperatures of hot gas expanders can cause degradation in the material capabilities of both the rotating and stationary components. For this reason, many of the components of the expanders are life limited. Operation beyond the design or useful life of a component can lead to inservice component failures. The determination of when the various components require replacement has been a difficult one for the operators of the equipment since the effects of high temperature operation often are not readily detectable via visual or conventional non-destructive techniques. The life of components (casings, nosecone, shroud rings, rotor blades, rotor discs, etc.) is dependent upon the individual component's operating conditions and consideration must be given to both steady and transient operation. Techniques are described along with the equipment that has been developed and utilized in several field installations to assist in the determination of the useful life of expander components. Examples of the findings from typical field life evaluations are presented. In addition to the metallurgical evaluations, the component design capabilities, service conditions, and operating history must also be evaluated. While these techniques have been developed for the fluid catalytic cracking (FCC) hot gas expander, they are directly applicable to other high temperature turbines such as gas, steam, and other expander applications.
Description
LecturePg. 139-148
Subject
TurbomachinesCollections
Citation
Linden, David H. (1996). Expander Field Remanent Life Analysis And Assessment.. Texas A&M University. Turbomachinery Laboratories. Available electronically from https : / /hdl .handle .net /1969 .1 /163456.