Inherently Safer Design (ISD) focusses on elimination of hazards and treatment of hazards at the source, rather than relying on only add-on equipment and procedures. ISD is based on four principles: minimization, substitution, moderation, and simplification.
Considering ISD within process safety management (PSM) helps to prevent and mitigate incidents like dust fires and explosions. Effective risk reduction involves implementation of ISD, engineered equipment, and procedural measures. ISD helps to make processes safer and more robust. There is evidence that ISD may make plants more economical through reduced risk, capital cost, and requirements associated with more complex risk management controls. ISD also supports continuous improvement.
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