Safe Failure Fraction (SFF)
Sarcastic process control dictionnary (continued)
Safe Failure Fraction: indicator of equipment bad quality. Index used to black list manufacturers.
An equipement with a lambda DU of 10-5 and an SFF of 90% fails 5 times more than another equipment with the same lambda DU of 10-5 but an SFF of 50% without being safer in any way...