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In engineering, reliability, availability, maintainability and safety (RAMS)cite-ref-1[1]cite-ref-2[2] is used to characterize a product or system:

• Reliability: Ability to perform a specific function and may be given as design reliability or operational reliability

• Availability: Ability to keep a functioning state in the given environment

• Maintainability: Ability to be timely and easily maintained (including servicing, inspection and check, repair and/or modification)

• Safety: Ability not to harm people, the environment, or any assets during a whole life cycle.

• See also

• References

• Systems engineering

• Dependability

• Failure mode

• Failure rate

• Failure mode, effects, and criticality analysis (FMECA)

• Hazard analysis and critical control points

• High availability

• Risk assessment

• Reliability-centered maintenance

• Safety instrumented system

• Safety integrity level

• Reliability, availability and serviceability (RAS)

• Fault injection

cite-note-11. ↑ "Reliability, Availability, and Maintainability - SEBoK". RAMBoK Project. Retrieved 2019-05-26.

cite-note-22. ↑ System safety, Norwegian University of Science and Technology