Reliability-Centred Maintenance (RCM) is a systematic maintenance management approach designed to ensure that equipment performs its required functions reliably, safely, and economically. It focuses on identifying possible equipment failures, understanding their consequences, and selecting the most appropriate maintenance strategy to prevent or control those failures. Unlike traditional maintenance practices that may rely mainly on fixed schedules, RCM uses equipment function, failure characteristics, operating conditions, and risk to determine maintenance requirements. RCM improves equipment performance by first identifying the critical functions of machines and systems. It determines what each piece of equipment is expected to do and establishes the performance standards that must be maintained. This helps maintenance managers concentrate their efforts on important equipment whose failure could seriously affect production, quality, safety, or the environment. As a result, maintenance resources are used more effectively. A major feature of RCM is systematic failure analysis. It identifies