Session: 02-12-01 Reliability Based Maintenance

Paper Number: 107731

107731 - Structural Integrity Risk Assessment of Offshore Terminals Based on Key Measurable Indicators 

Structural Integrity Risk Analysis (SIRA) is a crucial tool for any maritime structures and asset owners to ensure the current condition of their assets, are safe and sound and there are no risks to personnel, business, and environment. Nevertheless, there is no unique way to conduct this kind of structural risk analysis and therefore, asset owners and authorities are utilising different methods based on their best practice to come up with suitable structural risk figures for their assets. Despite best efforts, there is a chance to miscalculate the actual risk and, in most cases, underestimate the current structural risk. This is particularly become more important for the assets that are complex and aged. This paper tries to fill this gap by introducing some key indicators which can enhance the accuracy of SIRA and provide a better understanding for main decision makers to keep their assets in fair conditions and prevent any unwanted business interruption. To overcome this issue and reduce the likelihood of underestimating the actual structural risk, reliable indicators such as Condition Rating (CR), Section Utilisation (SU), Defect Heatmap (DH) and, Structural Criticality (SC) are introduced. These indicators can be integrated later into any risk matrix / system to estimate the inherent and future risk of structural sections in offshore terminals. To evaluate this method in practice, more than 5 years of structural condition data of one of the offshore terminals in Australia has been considered. Then, the key structural indicators and their variation over a 24-month time window have been developed, analysed, and monitored. Furthermore, the outcome has been used to update the structural asset management and maintenance strategy. Finally, to monitor the structural risk over the time, two new indicators; Defect Completion Rate (DCR) and Defect Overdue Index (DOI) have been introduced. 

Presenting Author: Sam Mazaheri Daly Bay Terminal

Presenting Author Biography: Dr. Sam is a leader/principal and a charted professional engineer in Structural Engineering, Civil Engineering and Asset Management with more than 30 years of experience in industrial sectors such as mines, ports, and offshore terminals, rail and transportation, and water management sectors including significant engagement in complex and critical infrastructure design, construction and asset management. He is also a great strategic thinker and problem solver provided applicable solutions to various complex asset owners and operators of various industries. Besides, he has also contributed to academic and research sectors by lecturing and supervising students in the field of Structural and Maritime Engineering and published more than 100 peer reviewed articles so far. He has also been acting as a chair / key member in many national and international organisations and technical panels such as Engineers Australia, PIANC ANZ, Ports Australia, Standards Australia and Australian Network of Structural Health Monitoring (ANSHM) just to name a few.

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