The project marks the final link in Magnox’s plans for encapsulating and storing intermediate level waste as part of the decommissioning of the nuclear power plant.
Balfour Beatty will deliver the final design of the encapsulation process and construction of the SILWE plant including the complex mechanical, electrical control and instrumentation required.
Work is expected to start on site this month and to be completed by the first quarter of 2017.
The twin reactor site was Scotland’s first civil nuclear generating station and at the time of opening in 1964 was the largest in operation in the world.
While the plant was active, and since it ceased operation in 1989, the solid intermediate level waste has been stored in bunkers.
This waste will be sealed in stainless steel boxes which will then be taken to the SILWE building for encapsulation before being transported to the Intermediate Level Waste store for storage for potentially the next 100 years.
The works will be carried out under the existing infrastructure, construction and enablers framework for projects across all 10 sites operated by Magnox.
Balfour Beatty was appointed to ICE in September 2012. This will be the fourth package order issued to the company under the framework.