A fuzzy sets based contractor prequalification procedure

Contractor prequalification makes it possible to admit for tendering only competent contractors. The paper presents a proposal for contractor prequalification schema involving two stages of prequalification: “on a standing list” and “per project”. A model of prequalification employing the theory of fuzzy sets to evaluate the “per project” contractors is precisely described. A simple numerical example illustrates the model operation and a description of a program supporting the prequalification procedure follows.

► I offer a contractor prequalification schema involving two stages of evaluation.
► In the model the fuzzy sets theory is applied.
► The model includes various objectives and criteria for the evaluation.
► I present a program with the working name “Prequalification”.