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Failure Modes and Reliability Analysis

Analytical Results in an FMRA

Simulation Results in an FMRA

The simulation results in an FMRA consider both reliability and maintainability characteristics in order to estimate availability, operating costs, and other useful metrics about the operation of a repairable system over time. They are available in RCM++/RBI and BlockSim.

Tip: When you perform FMRA simulations in RCM++/RBI, the software always assumes a reliability-wise series configuration. If you modified the configuration using BlockSim, then you must perform the simulation within BlockSim in order to take the new configuration into account.

To perform an FMRA simulation in RCM++/RBI, choose FMRA > Calculations > Simulate (Availability).

A window will open where you can change the simulation settings. Click OK to perform the simulation.

In BlockSim, you can use the simulation batch mode to get simulation results. To do this, change the diagrams to simulation diagrams and choose FMRA > Calculations > Simulate (Availability). Then click Run to perform the simulation.

A Note about Simulation with Constant Models

Note that it is not possible to simulate failure times if the reliability policy is defined with a constant value (rather than a distribution that varies with time). Thus, the costs estimated from the simulation will always be zero for any record with a constant reliability model. In such cases, you may wish to change the affected reliability policies to time-dependent distributions before simulating again.

Simulation Results

 

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