Source: https://tendernation.io/opportunities/01a13ccb-4c41-7225-a842-4a340eeac31b/reserved-procurement-d1203-ventilation-system closed GB negotiated without publication procedure # Reserved Procurement - D1203 Ventilation System [Dounreay a Division of Magnox](https://tendernation.io/buyers/dounreay-a-division-of-magnox) Estimated value £3,000,000 Published 30 Jun 2023 Deadline Closed 25 Aug 2023 ## About this tender Dounreay has a requirement to upgrade the D1203 Ventilation Systems to ensure that they are safe, compliant, and reliable to support upcoming decommissioning activities. The revised ventilation system will also provide risk mitigation against a future release of radiological contamination from the existing ventilation header ducts in the D1203 roof void. The Employer requires the Contractor to procure, construct, manufacture, inspect, test, deliver, install, and set to work the required upgrades to the D1203 ventilation system as specified with the detail design package produced by the Employer. The Contractor shall also remove and apply containment features to potentially contaminated ductwork sections made redundant by these works and transport them to an agreed laydown area. Some items of key plant will be procured in advance by the Employer, and free-issued to the Contractor for installation and setting to work. Preparatory groundwork, building penetrations and installation of transition spools will also be carried out in advance by the Employer. This includes the provision of the Air Handling Unit (AHU) foundation, ductwork support stanchion foundations, duct and pipe penetrations and sleeves through the D1203 building external fabric and formation of the new plantroom link corridor opening in the west wall of the D1209 corridor following removal of cladding by the Contractor. Interested parties must register as per the link below: [atamis-2464.my.site.com/s/Welcome](https://atamis-2464.my.site.com/s/Welcome) Read full description ## CPV classification Ventilation installation work Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/ce09326e-c56a-41fa-b3b1-05dffef79bfd) 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 Dounreay a Division of Magnox: past awards and live tenders](https://tendernation.io/buyers/dounreay-a-division-of-magnox) [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) [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) [DGT Helipad Design and Construction · Dartford and Gravesham NHS Trust · 28 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a15408-969e-7140-a307-fe72fa7128be/dgt-helipad-design-and-construction)