NSG Ltd

As part of its mandated role as the Nuclear Decommissioning Authority’s Low Level Waste management contractor, LLWR Ltd is responsible for the decommissioning of legacy site facilities related to the prior storage of radioactive contaminated materials from within five previous ordnance magazines on the site. The magazines were provided with retrieval facilities and equipment to repack and size reduce packages for onward transport.

These activities are now complete in Magazine 4 and NSG has been awarded the contract to decommission the retrieval facility extract ventilation system. The contract also contains options for the decommissioning of the extract ventilation systems from Magazines 9 and 10.

This was a great achievement for NSG who competed for the works with other nuclear contractors with existing experience of working at the LLWR. NSG secured the contract by providing an alternative innovative approach to the decommissioning strategy which was based on experience gained from similar operations at AWE.

This provided a safer and quicker methodology. Much of the up-front documentation has now been completed, with NSG having agreed the decommissioning methodology and ventilation philosophy with LLWR. They are currently in the process of completing the Safety Case documentation in partnership with AREVA RMC, who are supporting in the preparation of the overall Facility Safety Case for both Decommissioning Operations and the Care & Maintenance phase following project completion. The site team is set to mobilise for decommissioning operations in February 2012.

The project is progressing well, on schedule and a good working relationship is being developed with the LLWR project team. ‘It is great that the project is going well and even better that LLWR have approached us regarding taking up the options for further work, we look forward to a long and successful relationship for all parties.’, Andy Deall, NSG Project Manager.