Category: RCM
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RCM boundaries and Living RCM
In performing your RCM analysis on this butterfly valve, you decided to treat the hydraulic system as a separate analysis. You drew the boundary in such a way that the cylinder-actuator belongs to the hydraulic system and not to the valve. That is perfectly legitimate. You can draw the boundaries in any way that you…
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Common cause failures in RCM
When performing RCM how should we handle “common cause failures”? A common cause failure has the same failure mode in common with another failure elsewhere in the hierarchy tree view of the RCM knowledge base. Their appear to be four seemingly similar cases that need to be distinguished, but only case 2 describes a common…
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Initial RCM – Introduction
The material in these presentations represents 15 years of development by John Moubray. Moubray was the most significant popularizer of the maintenance decision techniques embodied by Reliability Centered Maintenance (RCM). RCM was developed by Stanley Nowlan and Howard Heap who described their findings in a report issued on December 31, 1978 , called, “Reliability-centered Maintenance”.…
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Initial RCM – Functions
The foundation of RCM Functions are the bedrock upon which the entire RCM analysis is built. Maintenance preserves function. Therefore we identify the asset’s functions so that we may analyze the failed states, causes, effects and consequences in order to decide what maintenance, if any, must be done to preserve those functions at the level…
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Templates for speeding up RCM
In your living RCM offering do you provide models or templates for systems and components typical to the oil and gas industry? The short answer is yes. Generic templates may be used subject to the following cautionary note. A pre-packaged FMEA or RCM analysis can contribute to the process as do other forms of technical…