Reliability, availability, maintainability and safety

This article is about Reliability, Availability, Maintainability, and Safety. For other uses, see Rams.

RAMS is an acronym for Reliability, Availability, Maintainability, and Safety.

• Reliability is a product's or system's ability to perform a specific function, and may be given as design reliability or operational reliability.
• Availability is the ability of a system to be kept in a functioning state.
• Maintainability is determined by the ease with which the product or system can be repaired or maintained.
• Safety is the requirement not to harm people, the environment, or any other assets during a system's life cycle.

See also

• Reliability engineering
• Failure mode
• Failure rate
• FMECA
• Hazard analysis and critical control points
• High availability
• Risk assessment
• Safety instrumented system
• Safety Integrity Level