Why Systems Fail to Achieve RAM requirements?

Folowing is a summary of the reasons as to why manufacturing plants fail to achieve the desired level of RAM (Reliability, Availability and Maintainability) requirement:

• Poorly defined or unrealistically high RAM requirements.

* Lack of priority on achieving Reliability & Maintainability

* Too little engineering for RAM

  • Failure to design-in reliability early in the development process
  • Inadequate lower level testing at component or subcomponent level
  • Reliance on prediction instead of conducting engineering design analysis.
  • Failure to perform engineering analysis of commercial off the shelf equipment
  • Lack of reliability improvement incentives
  • Inadequate planning for reliability
  • Ineffective implementation of Reliability Tasks in improving reliability
  • Failure to give adequate priority to the importance of integrated Diagnositics (ID) design — influence on overall maintainability atributes, mission readiness, maintenance concept design and associated LCC support concepts.
  • Unanticipated complex software integration issues affecting all aspects of RAM
  • Lack of adequate Integrated Diagnostic (ID) maturation efforts during system integration.
  • Failure to anticipate deisgn integration problems where incremental design approaches influence RAM performance.

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