Failure Finding Interval Calculator V1.0

Availability-based FFI Calculator

This is the simplest formula based on the reliability of the protective device and the desired availability, which depends on the consequences of the multiple failure. It should not be used for situations where the multiple failure has extremely high consequences.

Input Parameters

Enter the system parameters to calculate the Failure Finding Interval (FFI) based on availability.

This Failure Finding Interval (FFI) Calculator is provided for informational purposes only. By using this tool, you agree to the following terms:

The results generated by this tool should not replace professional engineering judgment or analysis.
The user is fully responsible for any decisions or actions taken based on the outputs of this tool.
The developers and owners of this tool shall not be held liable for any damages or losses arising from the use of or reliance on this tool. While we strive for accuracy, we cannot guarantee the completeness or accuracy of the tool's outputs.
This tool is provided 'as-is' without any warranties, either express or implied.
Always consult with qualified professionals before making critical decisions related to equipment maintenance and safety.