High Security Area 2, Sellafield Site, Cumbria

Efficient and high quality construction of the enhanced security features at the Sellafield nuclear site.

The project scope

Substantial upgrade of security arrangements at the Sellafield nuclear site including the construction of additional security features around high security facilities. The project involved the construction of new security fencing and security systems including:

• Provision of various temporary works schemes
• Excavation and earthworks
• Installation of in-situ cast concrete security fence foundations
• Installation of ducting, draw pits, lighting, CCTV columns and other security furniture
• Construction of roads and car parks
• Installation of deep drainage systems
• Landscaping and finishing works

Key quantities:

• Concrete pours: 500 RC
• Roads & footpaths: 2,500 m²
• Structural concrete: 3,600 m³

Challenges & successes

Due the urgent nature of the project, the detail design was developed in parallel with construction. This resulted in a high degree of design changes which threatened to delay the project. Our engineering and construction teams worked as part of the integrated project team with our client, the site owner and the Designer to discuss and resolve each issue on a day to day basis. This collaborative and detailed approach was successful and resulted in the project being delivered on time and within budget.

The changing nature of the design and other priority changes meant that we were required to work in a flexible and agile manner to maintain the project schedule. Direct employment of our labour and direct ownership of our plant and equipment meant that we delivered 95% of the works in house which allowed us to work flexibly.

The project design and specification was to very high engineering and construction standards with a significant amount of client oversight. We delivered the project to meet these high standards and our construction work was delivered with zero defects and non conformances.