ABSTRACT

As many nuclear sites around the world make the transition from operations to decommissioning, the problem-space in which they operate is changing and so too is the appropriateness of methods aimed at managing risks therein. Stated simply, just because hazard identification methods have worked in the past no longer means they are guaranteed to work in the future. This chapter describes an opportunity which arose at a UK Magnox nuclear site to subject this broad question to a more specific test through the comparison of two methods: the Structured What If (SWIFT) approach and cognitive work analysis (CWA). The SWIFT study considered all activities associated with the movement, identification and storage of the high-dose rate items (HDRI) within the cooling pond. The task under analysis is to safely lift the HDRIs out of the cartridge cooling pond (CCP) and place them into storage baskets.