Mean down time

Mean down time

Reliability analysis of mining systems

Published in Amit Kumar Gorai, Snehamoy Chatterjee, Optimization Techniques and their Applications to Mine Systems, 2023

Amit Kumar Gorai, Snehamoy Chatterjee

The above equation represents the exponential form of the maintainability function. In maintenance studies, one important parameter often used to measure maintainability, is mean time to repair (MTTR) or the mean down time. It can be defined as the expected value of the down time random variable, t. For an exponential distribution, it can be determined as MTTR=E(t)=∫0∞tf(t)dt=∫0∞tμe−μtdt=1μ

Reliability, availability and maintainability analyses for railway infrastructure management

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Journal Information

Published in Structure and Infrastructure Engineering, 2019

Shuhratjon Hidirov, Hakan Guler

The literature shows that the RAMS techniques can be used by railway engineers to forecast or to modal railway track failures. The RAMS parameters that are reliability, availability, maintainability, failure rate, Mean Time Between Failures (MTBF), Mean Time To Failure (MTTF), Mean Down Time (MDT), Mean Distance To Failure (MDTF), Mean Distance Between Failure (MDBF) and Mean Time To Repair (MTTR) can be used for an effective railway track maintenance management system. In this study, the RAM definitions and their mathematical equations are presented below.

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Reliability analysis of mining systems

Reliability, availability and maintainability analyses for railway infrastructure management