Abstract:

The paper presents a reliability analysis of an identical two-unit parallel CC plant system. Each unit consists of two identical 150 ton electrically operated overhead travelling (EOT) cranes operative at fully installed capacity. Failure in any crane of a unit brings the unit to a complete halt, and the inspection is carried out to detect the type of failure. Four years maintenance data from a steel production plant have been used for this purpose. Three major failures were noted in the system, viz., repairable, replaceable, and reconditioning/reinstallation. The real failure situations as depicted in the data have been considered for analysis. Optimized reliability indices of the system effectiveness are estimated numerically by using semi-Markov processes and regenerative point techniques.
Received on September 13, 2009, revised on September 12, 2010
References: 3