Frequently Asked Question

We have a question on how exSILentia apply beta factor to diverse redundant configuration. If dangerous undetected failure of isolation valve (e.g., XV) is higher than that of CV (control valve), which of the following PFDs of CCF is the closest to the PF
Last Updated a year ago

The CCF is applied to the item in the diverse redundant configuration with the lowest failure rate. In your example, common cause failure rate is calculated for the CV. The normal failure rate is then determined by subtracting the common cause failure rate from the total failure rate.

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