Improving Machinery Reliability Through Condition Based Maintenance
CIM Vancouver 2002
Peter Golde, Al Akerman, Len Kitchener,
This paper describes the significant advantages and improvements in operational availability, reduced breakdowns, and overall cost reductions that can be achieved through the application of a Reliability Centered Maintenance (RCM) program, including Condition Based Maintenance (CBM) and Equipment Health Monitoring (EHM), in a mine environment.
A case study is used to illustrate the essential elements that constitute the basic requirements to establish such programs. This CBM case study analyzed the Load-Haul-Dump vehicle sub-systems and their dominant failure modes, as a precursor to the development of condition indicators. The case study describes a disciplined process to enable condition indicator development and qualification in support of a CBM program. The case study identified both on-line and off-line condition monitoring opportunities, as well as condition monitoring systems for tele-remote operated units, with a view to improve overall LHD reliability.
The identified condition indicators vary from readily applicable off-the-shelf monitoring systems and techniques, through to "leading edge" technologies that require further research and development. The paper also explores the developments that have been made in the combination of expert system software associated with modern computer based control systems, and the availability of "intelligent” sensor technology that complement the control system capability.