Modelling and Hazard Analysis for Contaminated Sediments Using Stamp Model

摘要

Processes for remediation (removal of pollution or contaminants) of contaminatedrnsediments have become very efficient. These technologies, which are particularlyrncomplex, call for a comprehensive approach to risk analysis which characterises allrnthreats (to humans, equipment, local residents, the environment etc.). The STAMPrnaccident model (Systems-Theoretic Accident Model and Processes) is an example ofrnsuch a comprehensive approach, and it has been chosen to characterise the risksrnassociated with Novosol?, an innovative remediation process. Risk analysis is carriedrnout through the application of STPA (STamP-based Analysis).rnThis article is organised into three sections. The first describes the Novosol? processrnfor treating contaminated sediments. The second introduces the STAMP accidentrnmodel, together with the associated technique STPA (which can be used both tornevaluate safety and to perform accident analysis). Finally, the third section describes thernconcrete application of the STPA technique to the Novosol? process.