Reliability-Centered Maintenance (RCM), Weibull Analysis, and Spare-Parts Mathematics: P-F Intervals, Bath-Tub vs. Nowlan-Heap Failure Patterns, Poisson Capital Spares, and Bad-Actor Elimination

Deep End Era. Engineering with Sankalp · Oct 29, 2026 · 1h 8m

The probability theory and physics of industrial reliability: Nowlan and Heap's 1978 RCM report and the Six Failure Patterns (89% non-age-related), Waloddi Weibull's distribution (beta, eta, right-censored data), the P-F Interval and condition monitoring, hidden-failure proof-test intervals, Poisson capital spares math, and Bad-Actor elimination.

Chapters

00:00:00 Opening: The Overhauled Pump That Failed Forty-Eight Hours After a Preventative Rebuild

00:03:42 The Myth of the Universal Bathtub Curve and Nowlan & Heap's 1978 United Airlines / Pentagon RCM Revolution

00:08:15 Waloddi Weibull's…