Source: https://tendernation.io/opportunities/01a13cad-6e4e-724c-af88-2f368a43d272/rd-south-trench-cap-interim-membrane-replacement-project closed GB restricted procedure # RD - South Trench Cap Interim Membrane Replacement Project [LLW Repository Limited trading as Nuclear Waste Services](https://tendernation.io/buyers/llw-repository-limited-trading-as-nuclear-waste-services) Estimated value £53,000,000 Published 11 Sept 2023 Deadline Closed 23 Oct 2023 ## About this tender LLW Repository Ltd trading as Nuclear Waste Services has a scope of work for the "Southern Trench Cap Interim Membrane (STIM) Replacement Contract", 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. Repository Development is a long-term portfolio of works that will provide disposal capacity and protection of low-level nuclear waste over the next 107 years, or until the end life of the Repository Site. In the shorter term, the portfolio, over the next 15 years, will install closure engineering works for short and long-term environmental protection for wastes currently disposed in Vault 8 and the adjacent trenches. This scope of works has been previously referred to as Repository Development Programme - Tranche 1 Main Civils and has been communicated to the market in early 2022. The works over the next 15 years have been considered and optimised detailed designs completed. More recently, the delivery strategy for the works has been further developed and subsequently split into projects that deliver a key benefit to the closure of Vault 8 and adjacent trenches. This procurement is required to enable delivery of the Southern Trench Cap Interim Membrane Replacement Package for Repository Development within the Waste Operations Portfolio. The total estimated value of the 4 year contract is £53m. The key scope elements are summarised in Appendix 3 - LLWR-RDP-T1.ST-SCO-001 - STIM\_Scope. The Contracting Authority will procure for a Southern Trench Cap Interim Membrane Replacement Contract via the Restricted Procedure. The Contracting Authority will hold a two phase procurement, Selection Questionnaire and Invitation to Tender to appoint a single Contractor. Organisations are invited to submit their SQ responses via NWS's Atamis system ([atamis-2464.my.site.com/s/Welcome](https://atamis-2464.my.site.com/s/Welcome)), which can be accessed against Record Ref C13244 (RD - Southern Trench Cap Interim Membrane Replacement Project) which is listed within the 'Find Opportunities' area on the portal. Read full description ## CPV classification Construction work Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/1371d4f0-3ae9-402c-9b34-a9e0152c12cd) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile LLW Repository Limited trading as Nuclear Waste Services: past awards and live tenders](https://tendernation.io/buyers/llw-repository-limited-trading-as-nuclear-waste-services) [Sector More Construction work tenders](https://tendernation.io/sectors/construction-work) ## More tenders like this [Bannister Sports Centre Athletic Track Soft Market Testing Exercise · Harrow Council · 38 days left · 26 Nov 2026](https://tendernation.io/opportunities/01a1540d-d9e4-71cb-ad57-1603e9042fec/bannister-sports-centre-athletic-track-soft-market-testing-exercise) [Treloweth Community Hall Alterations and Extension Project · Carn Brea Parish Council · 49 days left · 7 Dec 2026](https://tendernation.io/opportunities/01a154e4-4991-71db-baac-ffae413f1c41/treloweth-community-hall-alterations-and-extension-project) [Norwich City Verges Mowing 2026 · Norse Eastern Ltd · 30 days left · 18 Nov 2026](https://tendernation.io/opportunities/01a15476-5fd9-70eb-b920-a66dc3e661e1/norwich-city-verges-mowing-2026) [Gwasanaethau Toeau - Gwaith cyfalaf wedi'i gynllunio ac atgyweiriadau ymatebol / Roofing Services - Planned capital works and responsive repairs · Denbighshire County Council · 28 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a15476-6094-72b9-928b-5c887e7ceea4/gwasanaethau-toeau-gwaith-cyfalaf-wedii-gynllunio-ac-atgyweiriadau-ymatebol) [Repair of St Michaels and All Angels Church Wall · Aylsham Town Council · 31 days left · 19 Nov 2026](https://tendernation.io/opportunities/01a15476-6316-7235-8948-8f108b3da399/repair-of-st-michaels-and-all-angels-church-wall) [Building Minor Works · Derbyshire Support and Facilities Services Limited · 26 days left · 13 Nov 2026](https://tendernation.io/opportunities/01a15408-9087-7003-bd47-df7bc19d7ff7/building-minor-works)