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A Practical Method for the Evaluation of Societal Risk in the Context of the International Maritime Organization's Safety Level Approach

Published online by Cambridge University Press:  21 January 2018

Molin Sun*
Affiliation:
(Navigation College, Dalian Maritime University, Dalian 116026, China)
Zhongyi Zheng
Affiliation:
(Navigation College, Dalian Maritime University, Dalian 116026, China)
Longhui Gang
Affiliation:
(Navigation College, Dalian Maritime University, Dalian 116026, China)
*

Abstract

The Safety Level Approach (SLA) is a structured application of risk-based methodologies for the International Maritime Organization's (IMO's) rule-making process. When the SLA is applied, safety goals have to be provided. In order to set appropriate levels for safety goals, it is necessary to measure the tolerance degree of the current safety level. Based on the consistency with individual risk criteria and the principle of continuous improvement, this paper proposes an approach to establish the societal risk criteria, which can be used for setting safety goals in the context of the IMO's SLA. Furthermore, by defining dynamic factors to express risk aversion, a method for tolerance measurement of the current societal risk is developed. Finally, a case study into the societal risk evaluation of cruise ships and Roll-On Roll-Off (RO-RO) passenger ships is conducted.

Type
Research Article
Copyright
Copyright © The Royal Institute of Navigation 2018 

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