Abstract
A guide draft of “Risk Based Inspection for oil storage tanks”was proposed by the TSM committee in the HPI, under the sponsorship by JOGMEC, at March 2007. A risk in the RBI is defined as multiplication of probability of failure (PoF) and consequence of failure (CoF) . In this RBI for oil storage tank, failure means a leakage of internal fluid, namely oil. Failures are caused by damage on structural materials, which is mainly corrosion. The purpose of this RBI guide is to propose an optimum inspection program in order to keep the lower risk and to reduce the higher risk of oil storage tank as a result of estimation of risk. This paper presents the outline of the guide which was completed to keep safe operation against long term material deterioration and⁄or disaster such as corrosion and earthquake.
