To provide solutions and expertise to the NWS Transformation programme look to move forward the integration of our business, and development as we move toward an alternative operating structure in order to effectively deliver our major programmes.
The objective of this work is to undertake an assessment of the potential impact of radioactive
gases released from the wastes within the disposal facilities at the LLWR, and from these to
derive radiological capacities where appropriate.
Only two such radioactive gases are of concern, C-14 and radon.
The work is concerned exclusively with the release of radioactive gas to the gas pathway
Nuclear Waste Services has awarded a contract for the Southern Trench Cap Interim Membrane (STIM) Replacement project, which forms part of the Repository Development portfolio of work at the LLW Repository facility near Drigg Village in Cumbria, England.
The scope consists of civil engineering works associated with installing an engineered interim trench cap over the Southern Trenches. The scope is to provide labour, equipment, materials, project management and supervision to complete the work. Work also includes establishment and maintenance of site offices, welfare and all associated temporary works.
NWS procured a Southern Trench Cap Interim Membrane Replacement Contract via the Restricted Procedure.
The contract value is up to £67m and is inclusive of associated risks & contingency.
Quantifying key uncertainties in terms of probabilities which was used to elicit probability distributions from technical experts: Next Major Review of the ESC requires the contractor to provide the production of technical memoranda documenting any developments of the elicitation approach and production of data management forms (DMFs) containing probability distributions and best estimate values.
Undertake a Criticality Safety Assessment (CSA) for the 2026 Environmental Safety Case (ESC). This includes developing the assessment approach, associated numerical models, two formal phases of assessment calculations and associated reporting.
The contract will run until 30th April 2026 in line with the submission of the ESC to the Environment Agency (EA).
Undertake assessment calculations of radiological impacts to non-human biota for the next Major Review of the ESC. This includes developing the assessment approach, associated numerical models, two formal phases of assessment calculations and associated reporting.
Nuclear Waste Services (NWS), through its Waste Services line of business, provides a Metallic Waste Treatment Service (MWTS) to both NDA and non-NDA customers. The service was established with the primary aim of prolonging the life of the repository through diverting metallic waste away from disposal at the LLWR site to treatment providers with the capability of processing the metallic waste to enable it to be recycled into new products or conditioned for optimised disposal. In line with the UK Government's Solid LLW Strategy and the Waste Management Hierarchy, this provides a more sustainable solution and extends the life of the LLWR site by reducing the volume of waste requiring disposal.
The procurement will deliver a contractual mechanism for the metallic waste treatment service. The current estimated maximum spend through the service is £95M, although the service will formally be a zero-value agreement, with no spend guaranteed.
The scope of the procurement is to manage the full metallic waste treatment lifecycle which could include the following:
· On-site works, de-planting activities, and waste preparation.
· Treatment of metallic waste in line with the waste management hierarchy and BAT.
· Management of Primary and Secondary Waste for onward recycling and/or disposal.
· Storage of metal pre and/or post treatment.
· Transport.
· Characterisation.
· Packaging Provision.
· Expert Support.
The framework will be for use by organisations that either currently hold, or may in future enter into, a Waste Services Contract with NWS. These organisations that either currently hold, or may in future enter into, a Waste Services Contract with NWS, include private sector bodies, plus public sector bodies that fall into one or more of the following categories:
1) Any of the following and their future successors: (further details can be found in the attached document)
2) Those listed and maintained by the Government on their website at https://www.gov.uk/government/organisations or any replacement or updated web-link.
3) Those listed and maintained by the Office of National Statistics (ONS) at https://www.ons.gov.uk/economy/nationalaccounts/uksectoraccounts/datasets/publicsectorclassificationguide or any replacement or updated web-link.
4) Those bodies in England, Wales or Northern Ireland which are within the scope of the definition of 'Contracting Authority' in regulation 2(1) of the Public Contracts Regulations 2015 (PCR) and/or Schedule 1 PCR.
The framework value is an estimate only and no guarantee can be given regarding the value or volume of work.