The verification result of permit to work assessment in occupational accident using fault tree analysis

Abstract

The objective of this paper is to elaborate and verified the results of the Permit To Work assessment that has been conducted using the Structural Equation Model (SEM) with Fault Tree Analysis (FTA) technique. The author used the Fault Tree Analysis to verify the result of five PTW elements i.e. Hazardous Activity, Worksite Inspection, Supporting Document, Work Description and Close Out. As it is known, the FTA is used to find the probability and cause of an accident or "Top Event". FTA is a relatively well-known technique used to find the probability of system failure. After the analysis using FTA technique, it was found that all the results of SEM and FTA gives the similar rank to Occupational Accident which is indicated that the result is correct and acceptable for this study. This is Part II of two paper, focusing on PTW Assessment result validation using Fault Tree Analysis.