Mechanical Integrity

Mechanical Integrity (MI), also known as Fitness-For-Service (FFS), has several definitions depending on the organization that describes it, for example, API 579-1/ASME FFS- 1 ( API 579–1/ASME FFS-1 Fitness-For-Service, 2007 Edition. Appendix G Damage Mechanism. API Publishing Services, 1220 L Street, N.W., Washington, D.C. 20,005 (2007)) defines it as a methodology by which anomalies or a state of damage in a component is evaluated in order to determine if it is suitable to continue in operation.