Reliability, availability and maintainability modelling

Reliability, Availability and Maintainability (RAM) analysis determines the likelihood of plant failure and the time necessary to return the plant to an operational state.  This allows the operator to optimise the design including its configuration, level of redundancy, component selection and supporting maintenance strategy.  As well as suggesting tangible improvements, a RAM analysis provides confidence that the system will meet its operational targets and support the through-life viability of a project.

 

Risktec provides a comprehensive RAM service, including:

  • Reliability data collection and analysis
  • FMEA and FMECA
  • Criticality analysis
  • Reliability block diagrams (RBDs)
  • Fault tree, event tree and Monte Carlo analyses
  • Reliability-centred maintenance (RCM)
  • Risk-based inspection (RBI)
  • Performance standards
  • Maintenance, testing and inspection optimisation
  • Human reliability assessment
  • Training courses

 

By applying RAM techniques in the early phases of the project lifecycle, Risktec identifies any shortfalls against targets and proposes practical solutions which yield significant improvements in reliability, availability and maintainability.

  • Setting unrealistic RAM targets
  • Using inappropriate failure data
  • Manipulating the model to justify a desired decision
  • Linking models based on physical interfaces rather than reliability logic
  • Modelling contractual boundaries rather than the system
  • Conducting the modelling as a theoretical backroom exercise instead of engaging with designers, operators and maintainers
  • Neglecting preventive maintenance programmes

 


“Our consultants have a proven track record in the practical application of RAM modelling to manage system downtime and reliability, and assure compliance with statutory requirements, minimise process interruptions and reduce costs.”

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