Chapter 1

Question 1

Availability

Answer 1

The ability of a product to be in a state to perform a required function under given conditions at a given instant of time or over a given time interval assuming that the required external resources are provided

Question 2

Maintainability

Answer 2

The probability that a given active maintenance action, for an item under given conditions of use can be carried out within a stated time interval when the maintenance is performed under stated conditions and using stated procedures and resources.

Question 3

Reliability

Answer 3

The probability that an item can perform a required function under given conditions for a given time interval

Question 4

Safety

Answer 4

Freedom from unacceptable risk or harm