Division 17

BAT is to prevent pollution upon decommissioning by using necessary techniques as listed below.

Design considerations for end-of-life plant decommissioning:

1. I..

   giving consideration to the environmental impact from the eventual decommissioning of the installation at the stage of designing a new plant, as forethought makes decommissioning easier, cleaner and cheaper

2. II..

   decommissioning poses environmental risks for the contamination of land (and groundwater) and generates large quantities of solid waste; preventive techniques are process-specific but general considerations may include:

   1. (i)

      avoiding underground structures

   2. (ii)

      incorporating features that facilitate dismantling

   3. (iii)

      choosing surface finishes that are easily decontaminated

   4. (iv)

      using an equipment configuration that minimises trapped chemicals and facilitates drain-down or cleaning

   5. (v)

      designing flexible, self-contained units that enable phased closure

   6. (vi)

      using biodegradable and recyclable materials where possible.