Starting Points of RCM Analysis – Defining Equipment Functions and Operating Context
Published on February 18, 2026
In this unit, we delve into the foundational steps of Reliability Centered Maintenance: defining the Operating Context and Functions. Starting with an Operating Context provides a narrative about what the equipment is, its technical details, its operational environment, and its usage expectations. This story sets the stage for a unified understanding among all stakeholders involved in maintaining the equipment. We then move to Functions, the first of seven steps in the RCM process, where reliability is not just an abstract concept but a tangible attribute defined through specific performance standards of the equipment. Through real-world comparisons of air compressor analyses, I illustrate the stark difference between routine function descriptions and those meticulously crafted to meet precise organizational needs. This segment reveals how detailed function writing not only enhances reliability but also uncovers critical insights about equipment operation, which can correct misconceptions and prevent chronic failures. Join me as we explore how properly written functions are integral to effective maintenance strategies and responsible equipment stewardship.
About the Author:
Nancy Regan is an RCM expert with 26+ years of experience in analysis, training, and implementation. She helps organizations cut costs, prevent failures, and build a Reliability Culture. With a B.S. in Aerospace Engineering from Embry-Riddle, she authored The RCM Solution, a guide to successful RCM programs.
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