Fire Safety Assessment Based on FSA and Risk Reduction of Machinery System Considering Functional Safety

It is the well-known fact that most part of goods transported a re moved on the unfavorable ocean and even a small amount of ac cidenton sea is extremely dangerous for human lives, financial losses , and social responsibility. Among the several causes of accide nts, thoseby fire have occurred frequently and their damage has been high ly serious. The aim of this paper is to assess the risk of fire s due to oilleakage in the machinery space. To define the possible fire sce nario, our team has performed the search of casualty database a nd reviewed the previous and various studies in the field. As a re sult, it is noted that the quantitative risk of the fire scenar io have beenevaluated on the ground of the FSA risk model.The expected frequency of a fire amounts to incidents during t he life of a ship, and the expected financial damage amounts to 5,654 USD per a ship. By adopting Safety Instrumented System (SIS) in troduced in IEC 61508 and IEC 61511, SIS model is designed to p reventoil leakage fire as a risk reduction method. It is concluded th at System Integrity Level (SIL) 1 seems to be appropriate level of SIS.Keywords : Formal Safety Assessment(FSA, ), Risk(), Fire safet y( ), Safety Instrumented System(SIS, ), Safety Integrity Level(SIL, )