Human Performance using Fuzzy Inherent Safety Tool (HuP-FiST)

Human factor (HF) is an important concern for most industry especially for the
chemical and petrochemical industry. This is because; many accidents in such
industry are contributed by human error. It can be proved that the incident rate due to
HF had increased from time to time. There are findings based on survey show that
64% oftotal incidents are mainly due to human error. Thus, a study regarding human
factor, method to quantitatively estimate the contribution of HF and how to reduce it
using Inherent Safety (IS) principle need to be developed.
Therefore, a new tool which is simple and cost optimal approach had been chosen to
satisfy the need. This method is referred to Inherent Safety Tool (1ST) using fuzzy
analytical hierarchy process (FAHP) theory in index computation; a type of
trapezoidal fuzzy number (TFN) ranges to identify fuzzy evaluating vector. The tool
can be simplified as Human Performance using Fuzzy Inherent Safety Tool or HuPFiST.
This tool is aim to support decision making and control human error in order
to improve human performance while working. The application of pair-wise
comparison matrix and TFN could be used for human error occurrence and mitigate
the end results of HF. Lastly, this study also used the case study process to identify
the TFN and end result for concept validation.