This paper considers the evaluation of the
Risk Priority Number (RPN) for FMEA approaches.
There are presented the traditional RPN method, and
existing fuzzy logic based methods. Intuitionistic
fuzzy numbers (IFNs) and computational methods
involving IFNs are described, and a new methodology
for RPN estimation is proposed. Finally, the new IFNFMEA
risk assessment is explained and its usage is
shown for the power engineering field