The Plan

Sellafield Site Decommissioning Strategic Objectives:

  1. Safe decommissioning of facilities
  2. Develop and coordinate long term decommissioning strategy
Sellafield Site Decommissioning plan Plan
Sellafield Site Decommissioning plan

The Sellafield Decommissioning Programme is a group of projects covering facilities across the Sellafield site, where decommissioning is currently being carried out. 

The programme includes the strategy and preparation for future decommissioning but excludes the specific decommissioning of all future facilities and all facilities which are currently operational or subject to retrievals operations.

Key highlights of the decommissioning programme include the following:

Pile 1 Chimney dismantling will continue through this reporting period (2010/11 to 2025/26) with decontamination activities scheduled to begin during the 2019/20 financial year.

The demolition of the Waste and Effluent Drum Store, PCM Storage Drum Store was completed in the early part of 2011/12, with the exception of the electrical substation which is still operational. When the substation is taken out of service in 2016, it will be demolished releasing the whole of the footprint for alternative use.

Completion of the Caesium Plant decommissioning is scheduled for the 2012/13 financial year and North Group Compound demolition is scheduled to begin during the 2020/21 financial year.

The construction of an overbuilding for the LA Effluent Treatment Plant is scheduled for completion during the 2021/22 financial year when decommissioning of the LA Effluent Treatment Plant will begin.


Sellafield Site Decommissioning summary of costs
Sellafield Site Decommissioning summary of costs