With a vision to be a leading university that unites creative minds to shape a better future, the College of Design and Engineering at the National University of Singapore offers a future-focused, interdisciplinary learning and research program that meets the demands of a rapidly evolving and complex world. By bringing together the world-class Faculty of Engineering and the School of Design and Environment, the College aims to advance explorations, applications and professions in the fields of engineering and design.
Supervising professor
Ivan Siang-Meng Sin
Education
- PhD (Incident Management), Southern Cross Australia, 2019
- MBA (Business Resilience), Murdoch Australia, 2012
- MSc (Safety, Health & Environmental Technology), National University Singapore, 2003
- BSc (Chemistry & Biochemistry), National University Singapore, 1992
Awards and Honours
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Fellow, Institution of Fire Engineers (UK), 2015
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Associate Fellow, Institution of Chemical Engineers (UK), 2020
Teaching Interests
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Chemical Process Safety & EHSS Management
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Organizational Resilience Planning & Incident Management
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Enterprise Risk & Resource Management
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Corporate Crisis & Emergency Management
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Business Continuity & Recovery Management
Abstract
This group case study examines the tank farm incident in the Caribbean in 2009, investigates the chronology of events and identifies critical gaps in safety measures. After exploring the different phases of the lifecycle and discussing how a Safety Instrumented System (SIS) or Safety Instrumented Function (SIF) could have mitigated the incident, the study introduces a HAZOP and a LOPA study to determine the safety integrity level (SIL) for the proposed SIF. In its second part, the presentation explains the assumptions underlying the proposed solution and demonstrates the critical role of SIS implementation in moving gasoline.
It outlines the implementation methods in accordance with international standards, in particular IEC 61508 and IEC 61511, providing valuable insights for the improvement of safety protocols in the process industry.
Abstract
This presentation looks at the tragic accident at the Texas City refinery, describing the disaster and providing a detailed chronology. After a closer look at the process hazard analysis (PHA), it examines the reasons why the accident could not be prevented by an adequate safety instrumented system (SIS). The study includes a sample hazard and operability study (HAZOP) and a layer of protection analysis (LOPA) discussing the safety requirements specification (SRS) for the implementation of an SIS. This sheds light on possible gaps in the existing safety protocol.
The study of the design of a SIS for overfill prevention is an attempt to bridge the gap between theoretical safety concepts and practical applications. Although the proposed system appears to meet the stringent requirements of SIL 2, it is important to acknowledge the inherent limitations and scope for further research.
Abstract
This safety review discusses the potential of ammonia as a clean energy carrier. After a brief introduction and presentation of the methodology used, a significant portion is devoted to a simulation study of various release scenarios involving ammonia. The analysis encompasses possible incidents during transfer, examining the safety-related impact on both humans and the environment. Real-world case incidents related to ammonia transport are investigated to gain valuable lessons and insights for risk mitigation.
In conclusion, the discussion underscores the potential of ammonia as a key energy player in a clean energy landscape. Adapting existing natural gas pipelines for ammonia transportation, albeit with necessary modifications, is presented as a viable strategy.