P-F Interval
Reliability
P-F Interval
Potential Failure to Functional Failure Interval
Time between detection of a potential failure condition and the point of functional failure.
Examples
- 01For the conveyor gearbox, the P-F interval is about 8 weeks from the first oil-analysis warning to failure.
- 02Before setting inspection frequency, the team reviews the P-F interval: checks must happen at least twice within it.
- 03Because the P-F interval for belt wear is only 10 days, inspection is moved from monthly to weekly.