| Popis: |
The aim of this chapter is to study the failure behavior of a real operating system in a urea fertilizer industry located in the northern part of India. For the considered real operating system, series-parallel arrangement has been represented using Petri Net (PN) modeling. Fuzzy Lambda–Tau (λ–τ) approach was executed for tabulating Reliability, Availability, Maintainability (RAM) parameters under uncertain environment. The trend of computed RAM parameters was studied and analyzed for evaluating the failure behavior of the considered real operating system. The analysis results clearly show a decreasing trend for system’s availability, that is, with the increase in spread from ±15% to ± 25% availability decreases by 0.03259% and with ± 25% to ±60% availability further decreases by 0.37472%. Further findings of the work would be highly useful for the reliability engineer of the plant in framing an optimal time interval-based maintenance policy for the considered real operating system in order to maintain system’s availability in upstage over long duration. |
