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Morgan Sindall Infrastructure
Two construction workers at a site; one operates an excavator while the other stands nearby with equipment, surrounded by red safety barriers.

Intermediate Level Waste East Zone (Phase-1) Project

Delivered through the Programme and Project Partners (PPP) framework

The Intermediate Level Waste East Zone (ILW-EZ) project is paving the way for the construction of the Lightly Shielded Store (LSS1).

This facility will store special nuclear materials from across the Sellafield site once operational.

Wide view of a construction site with gravel ground, machinery, and fencing under cloudy skies.
Two construction workers at a site; one operates an excavator while the other stands nearby with equipment, surrounded by red safety barriers.
Large empty gravel lot with industrial buildings and smokestacks in the background under an overcast sky.
Large empty gravel lot with industrial buildings and smokestacks in the background under an overcast sky.
Wide view of a gravel-covered construction site with machinery and metal barriers in the background.
Three construction workers in white protective suits spread wet concrete using long-handled tools, with heavy machinery and ongoing construction in the background.

Project overview

The first phase of a complex land preparation project, known as the Intermediate Level Waste East Zone (ILW-EZ), has been completed on the Sellafield site preparing the LSS1 site with enabling works so that construction of the facility can commence to schedule.

After two years of complex planning, the project has seen groundworks and excavation completed to prepare land equivalent in size to seven football pitches (50,000m2) and the excavation of 140,000m3 of material over 18 months.

Some key work included:

  • 924m of foul and storm water drainage installed
  • Construction of 260m of new road
  • 926m filtration drainage installed

Customer:

Sellafield Ltd

Location:

Cumbria

Date:

2025

Fun fact: It has been completed ahead of schedule, achieving significant savings, and with exceptional safety performance.

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