Abstract
In a strict consecutive-k-out-of-n:F system, strings of failed components of length less than k do not occur, and hence the system components are not totally statistically independent. A correct formulation for the reliability analysis of such a system is reported and then illustrated via several examples. The unreliability of a strict system is shown to be not necessarily smaller than or equal to that of an ordinary system. Finally, clear distinctions are drawn between the present model of a strict system, and a model of a noncoherent system that matches earlier mathematical treatments.