ABSTRACT
Systematic methods for identifying ways to reduce risk and to evaluate their effect are important to be able to get the maximum benefit from investing in risk reduction. In this chapter, we start by looking at barriers, as a general term for measures that contribute to reduce risk. Alternative ways of classifying barriers are also described, along with key properties that are important for their performance. We also describe the corresponding terms used in the maritime industry, risk control measures, and risk control options. Next, key parameters to consider when evaluating and prioritizing barriers are discussed. A key parameter is usually cost, and the theory of cost-benefit analysis is explained and illustrated with a comprehensive example related to protection against oil spill.
