Constraint and Fault Tree Analysis in Safety Construction System Integration

Abstract

Construction projects is an activity contains many elements of hazard and causes a poor record in terms of occupational safety. Therefore, occupational safety is always an aspect that have to be regenerated, caused by the problem complexities which includes issues in terms of humanity, legal aspects, accountability and the image of the organization. This research aims to determine the level of accuracy in the field of the application of occupational safety management systems based on engineering judgement, identify and analyze the potential risk of loss/work accident using the Fault Tree Analysis (FTA) method and plan mitigation to reduce the scope of construction work in progress. This research is a quantitative analysis which is done by collecting primary data through interviews and observations and secondary data in the form of data from the construction project. FTA used to investigate potential work accidents by analyzing the direct causes to the underlying causes of the accident. The results show the level of implementation accuracy of the Occupational Safety Management System that has been applied obtained an assessment rate of 97.29% and included in the satisfactory rating level, however after a probability assessment based on engineering judgement there are indications of doubts of 23.37% of the results. The FTA causality results found several events tendencies potentially lead to loss, events such as workers not using personal protective equipment, workers acting carelessly, and lack of work experience are events that often occur in FTA basic events.