The steps involved in safely decontaminating a process unit during decommissioning are crucial for protecting workers, the environment, and ensuring regulatory compliance. They typically include: 1. Planning and Risk Assessment: Develop a detailed decontamination plan based on a thorough assessment of the unit's history, including the types and quantities of chemicals handled, potential hazards, and applicable regulations. 2. Isolation: Isolate the unit from other operating units by disconnecting all pipelines, electrical connections, and other utilities. Blinding or physically disconnecting pipes is essential. 3. Depressurization and Venting....
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