Definition(s)
MTTF
Mean time to failure.
Source: API STD 689, Collection and Exchange of Reliability and Maintenance Data for Equipment, First Edition, July 2007. Global Standards
Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards
MTTF
Expectation of the time to failure [2]. NOTE The MTTF of an item can be longer or shorter than the design life of the system.
Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards