Reliability Centered Maintenance
 
Reliability Centered Maintenance ISO 55000 Assessments
 
 

Reliability Centered Maintenance ( RCM )

 

EDI’s Unique Perspective on Reliability Centered Maintenance



One of the leading points of emphasis within ISO 55001 is the identification and management of risk to internal and external stakeholders of the defined asset portfolio. So one of the biggest questions we ask ourselves is: How does Maximo, or any EAM system, provide tools to remove subjectivity from defining risk related to asset management? The answer, as always, involves not just the system or tools available, but the program and processes in place to identify, control and manage risk.


To achieve Reliability Centered Maintenance, it is critical to understand the requirements of an asset and how it fails. Failure is simply an inability of an asset to perform a required function, regardless of the cause of that failure. In Maximo’s Failure Reporting Hierarchy, this is referred to as the “Problem”. Too often EDI sees clients’ implementations that refer to common causes, or failure modes, as the problem.


Maximo Implementation Services

Once we make that distinction, we can then start applying some objectivity to failure. A common method for quantifying risk for assets is by assigning a Risk Priority Number (RPN) to each failure that occurs. The RPN of a failure is calculated by multiplying numeric scores that quantify (a) the amount of harm or damage the failure may cause to a person or to equipment, (b) the likelihood that the failure will occur, and (c) the likelihood that the failure will not be detected:

RPN = Severity X Occurrence X Detectability

Translating this to Maximo:

  • Severity is correlated to the Problem Code, or inability of the asset to perform a certain function. Problem Codes have varying pre-defined severity levels associated with them.
  • Occurrence is an ongoing task to monitor the frequency of reported failures with the same failure modes.
  • Detectability is correlated to the Cause Code, and have varying detectability levels associated with each cause.

By making both of these process-based and system-based correlations, we are able to generate a single number that represents the risk of each asset, or system of assets, to the organization. Armed with that powerful set of information, we are able to make intelligent decisions about where resources are allocated and how the organization is managed from an asset management perspective.

 
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