← Back to opportunities

Decommissioning Nuclear Waste Partnership

Sellafield Limited

Buyer Contact Info

Buyer Name: Sellafield Limited

Buyer Address: Sellafield, Seascale, CA20 1PG, GB

Contact Name: Michelle Edmondson

Contact Email: michelle.a.edmondson@sellafieldsites.com

Status
complete
Procedure
selective
Value
4600000000.0 GBP
Published
10 Nov 2025, 09:02
Deadline
27 Jun 2024, 15:00
Contract Start
30 Oct 2025, 00:00
Contract End
30 Oct 2040, 23:59
Category
works
CPV
45220000 - Engineering works and construction works
Region
n/a
Awarded To
TDA (AtkinsRéalis UK, Amentum Clean Energy, Westinghouse El, Amentum Clean Energy Limited, NDS (Altrad Support Services Ltd, Cavendish Nuclear Ltd, Shepley, A2R (Altrad Support Services Limited and AtkinsRéalis UK Li
Official Source
Open Contracts Finder

Description

Sellafield Ltd is responsible for safely operating and decommissioning Europe's largest, most complex nuclear site, which is home to legacy nuclear facilities that are some of the most hazardous buildings in Western Europe. Sellafield Ltd, through the Decommissioning and Nuclear Waste Partners (DNWP) Framework opportunity, has brought together four partners across four Lots to provide a full suite of expertise and support to deliver decommissioning activities and projects, including asset care. Delivery will be across nuclear facilities on the Sellafield licenced site that are in mix of states including operational, post operation clean out (POCO), decommissioning and demolition. Consequently, the scope of work for the DNWP Framework will include construction delivery, demolition related works, associated technical services (including safety case and design) and waste management with the scope aligned across the following four Lots: Lot 1 Remediation Partners Lot 2 Pond Retrievals Partner Lot 3 Silos Retrievals Partner Lot 4 Integrated Nuclear Waste Partner Lot 1 will consist of two Remediation Partners. Remediation is about cleaning up the Sellafield site over the next century as safely and cost-effectively as possible. As an asset reaches the end of its operational life, remediation addresses the nuclear, radiological and conventional risks through post-operation clean-out, decommissioning, demolition and land remediation. Lot 2 will consist of a Ponds Partner, encompassing both the First Generation Magnox Storage Pond ("FGMSP") , associated buildings and the Pile Fuel Storage Pond ("PFSP"). and associated buildings. Legacy Ponds is the Operating Unit (OU) organisation within the Retrievals value stream of Sellafield that is charged with managing the programmes of work for the FGMSP and the PFSP. These are two legacy nuclear storage ponds that retain significant radiological materials and hazards that require timely mitigation, principally by retrieving the materials to downstream treatment and storage/disposal facilities while maintaining a safe and secure environment. Lot 3 will consist of a Silos Partner, encompassing both the Magnox Swarf Storage Silo ("MSSS") and Pile Fuel Cladding Silo ("PFCS"). The Retrievals value stream is responsible for managing the site's major hazard and risk reduction programme: retrieving the waste from Sellafield's four highest risk legacy storage facilities. Lot 4 will consist of a single enterprise-wide Integrated Nuclear Waste Partner. This Nuclear Waste Partner will work through the Waste Operating Unit ("Waste OU"). The Waste OU is part of the Remediation Portfolio, it includes a dedicated programme providing enabling activities across the Sellafield enterprise with major customers being the DNWP Remediation & Retrievals Partners.

Linked Documents

No linked documents found for this notice.

Opportunity Context

Raw Notice JSON

Expand raw payload
{
  "awards": [
    {
      "contractPeriod": {
        "endDate": "2040-10-30T23:59:59Z",
        "startDate": "2025-10-30T00:00:00Z"
      },
      "date": "2025-10-30T00:00:00Z",
      "datePublished": "2025-11-10T09:02:34Z",
      "documents": [
        {
          "datePublished": "2025-11-10T09:02:34Z",
          "description": "Awarded contract notice on Contracts Finder",
          "documentType": "awardNotice",
          "format": "text/html",
          "id": "1",
          "language": "en",
          "url": "https://www.contractsfinder.service.gov.uk/Notice/6d4229ba-fc62-49f3-a066-5a41982c23bf"
        }
      ],
      "id": "ocds-b5fd17-a4d8dd6b-a51d-430d-89f1-8a04c1fac9fb-1",
      "status": "active",
      "suppliers": [
        {
          "id": "GB-CFS-327279",
          "name": "TDA (AtkinsR\u00e9alis UK, Amentum Clean Energy, Westinghouse El"
        },
        {
          "id": "GB-CFS-327280",
          "name": "Amentum Clean Energy Limited"
        },
        {
          "id": "GB-CFS-327281",
          "name": "NDS (Altrad Support Services Ltd, Cavendish Nuclear Ltd, Shepley"
        },
        {
          "id": "GB-CFS-327282",
          "name": "A2R (Altrad Support Services Limited and AtkinsR\u00e9alis UK Li"
        }
      ],
      "value": {
        "amount": 4600000000,
        "currency": "GBP"
      }
    }
  ],
  "buyer": {
    "id": "GB-CFS-279061",
    "name": "Sellafield Limited"
  },
  "date": "2025-11-10T09:02:35Z",
  "id": "6d4229ba-fc62-49f3-a066-5a41982c23bf-871403",
  "initiationType": "tender",
  "language": "en",
  "ocid": "ocds-b5fd17-a4d8dd6b-a51d-430d-89f1-8a04c1fac9fb",
  "parties": [
    {
      "address": {
        "countryName": "GB",
        "locality": "Seascale",
        "postalCode": "CA20 1PG",
        "streetAddress": "Sellafield"
      },
      "contactPoint": {
        "email": "michelle.a.edmondson@sellafieldsites.com",
        "name": "Michelle Edmondson"
      },
      "id": "GB-CFS-279061",
      "identifier": {
        "legalName": "Sellafield Limited"
      },
      "name": "Sellafield Limited",
      "roles": [
        "buyer"
      ]
    },
    {
      "address": {
        "streetAddress": "Rutherford House, Westlakes Science Park, Moor Row, CA24 3HY"
      },
      "details": {
        "scale": "large"
      },
      "id": "GB-CFS-327279",
      "identifier": {
        "legalName": "TDA (AtkinsR\u00e9alis UK, Amentum Clean Energy, Westinghouse El"
      },
      "name": "TDA (AtkinsR\u00e9alis UK, Amentum Clean Energy, Westinghouse El",
      "roles": [
        "supplier"
      ]
    },
    {
      "address": {
        "streetAddress": "305 Bridgewater Place Birchwood Park, Birchwood, Warrington, WA36XF"
      },
      "details": {
        "scale": "large"
      },
      "id": "GB-CFS-327280",
      "identifier": {
        "legalName": "Amentum Clean Energy Limited"
      },
      "name": "Amentum Clean Energy Limited",
      "roles": [
        "supplier"
      ]
    },
    {
      "address": {
        "streetAddress": "Units 6 \u0026 7 Lyncastle Way Appleton Thorne Trading Estate Warrington, Warrington, WA4 4ST"
      },
      "details": {
        "scale": "large"
      },
      "id": "GB-CFS-327281",
      "identifier": {
        "legalName": "NDS (Altrad Support Services Ltd, Cavendish Nuclear Ltd, Shepley"
      },
      "name": "NDS (Altrad Support Services Ltd, Cavendish Nuclear Ltd, Shepley",
      "roles": [
        "supplier"
      ]
    },
    {
      "address": {
        "streetAddress": "Rutherford House, Westlakes Science Park, Whitehaven, CA24 3JZ"
      },
      "details": {
        "scale": "large"
      },
      "id": "GB-CFS-327282",
      "identifier": {
        "legalName": "A2R (Altrad Support Services Limited and AtkinsR\u00e9alis UK Li"
      },
      "name": "A2R (Altrad Support Services Limited and AtkinsR\u00e9alis UK Li",
      "roles": [
        "supplier"
      ]
    }
  ],
  "tag": [
    "award"
  ],
  "tender": {
    "additionalClassifications": [
      {
        "description": "Construction consultancy services",
        "id": "71530000",
        "scheme": "CPV"
      },
      {
        "description": "Engineering design services for mechanical and electrical installations for buildings",
        "id": "71321000",
        "scheme": "CPV"
      },
      {
        "description": "Business and management consultancy and related services",
        "id": "79400000",
        "scheme": "CPV"
      },
      {
        "description": "Construction work",
        "id": "45000000",
        "scheme": "CPV"
      },
      {
        "description": "Business and management consultancy services",
        "id": "79410000",
        "scheme": "CPV"
      },
      {
        "description": "Industrial machinery",
        "id": "42000000",
        "scheme": "CPV"
      },
      {
        "description": "Electrical engineering installation works",
        "id": "45315100",
        "scheme": "CPV"
      },
      {
        "description": "Engineering design services for the construction of civil engineering works",
        "id": "71322000",
        "scheme": "CPV"
      },
      {
        "description": "Engineering design services",
        "id": "71320000",
        "scheme": "CPV"
      },
      {
        "description": "Building construction work",
        "id": "45210000",
        "scheme": "CPV"
      },
      {
        "description": "Decommissioning services",
        "id": "98391000",
        "scheme": "CPV"
      },
      {
        "description": "Site preparation work",
        "id": "45100000",
        "scheme": "CPV"
      },
      {
        "description": "Waste analysis services",
        "id": "79723000",
        "scheme": "CPV"
      },
      {
        "description": "Site preparation and clearance work",
        "id": "45111200",
        "scheme": "CPV"
      },
      {
        "description": "Design consultancy services",
        "id": "79415200",
        "scheme": "CPV"
      },
      {
        "description": "Safety cases",
        "id": "44421722",
        "scheme": "CPV"
      },
      {
        "description": "Demolition, site preparation and clearance work",
        "id": "45111000",
        "scheme": "CPV"
      },
      {
        "description": "Site-clearance work",
        "id": "45111213",
        "scheme": "CPV"
      },
      {
        "description": "Construction work",
        "id": "45000000",
        "scheme": "CPV"
      },
      {
        "description": "Mechanical engineering installation works",
        "id": "45351000",
        "scheme": "CPV"
      },
      {
        "description": "Construction equipment",
        "id": "43320000",
        "scheme": "CPV"
      },
      {
        "description": "Designs",
        "id": "22314000",
        "scheme": "CPV"
      },
      {
        "description": "Design support services",
        "id": "79933000",
        "scheme": "CPV"
      },
      {
        "description": "Waste disposal site construction work",
        "id": "45222110",
        "scheme": "CPV"
      }
    ],
    "classification": {
      "description": "Engineering works and construction works",
      "id": "45220000",
      "scheme": "CPV"
    },
    "contractPeriod": {
      "endDate": "2040-10-30T23:59:59Z",
      "startDate": "2025-10-30T00:00:00Z"
    },
    "description": "Sellafield Ltd is responsible for safely operating and decommissioning Europe\u0027s largest, most complex nuclear site, which is home to legacy nuclear facilities that are some of the most hazardous buildings in Western Europe. Sellafield Ltd, through the Decommissioning and Nuclear Waste Partners (DNWP) Framework opportunity, has brought together four partners across four Lots to provide a full suite of expertise and support to deliver decommissioning activities and projects, including asset care. Delivery will be across nuclear facilities on the Sellafield licenced site that are in mix of states including operational, post operation clean out (POCO), decommissioning and demolition. Consequently, the scope of work for the DNWP Framework will include construction delivery, demolition related works, associated technical services (including safety case and design) and waste management with the scope aligned across the following four Lots:\r\n\r\n\r\nLot 1 Remediation Partners\r\nLot 2 Pond Retrievals Partner\r\nLot 3 Silos Retrievals Partner\r\nLot 4 Integrated Nuclear Waste Partner\r\n\r\nLot 1 will consist of two Remediation Partners. Remediation is about cleaning up the Sellafield site over the next century as safely and cost-effectively as possible. As an asset reaches the end of its operational life, remediation addresses the nuclear, radiological and conventional risks through post-operation clean-out, decommissioning, demolition and land remediation. \r\n\r\nLot 2 will consist of a Ponds Partner, encompassing both the First Generation Magnox Storage Pond (\"FGMSP\") , associated buildings and the Pile Fuel Storage Pond (\"PFSP\"). and associated buildings. Legacy Ponds is the Operating Unit (OU) organisation within the Retrievals value stream of Sellafield that is charged with managing the programmes of work for the FGMSP and the PFSP. These are two legacy nuclear storage ponds that retain significant radiological materials and hazards that require timely mitigation, principally by retrieving the materials to downstream treatment and storage/disposal facilities while maintaining a safe and secure environment.\r\n\r\nLot 3 will consist of a Silos Partner, encompassing both the Magnox Swarf Storage Silo (\"MSSS\") and Pile Fuel Cladding Silo (\"PFCS\"). The Retrievals value stream is responsible for managing the site\u0027s major hazard and risk reduction programme: retrieving the waste from Sellafield\u0027s four highest risk legacy storage facilities. \r\n\r\nLot 4 will consist of a single enterprise-wide Integrated Nuclear Waste Partner. This Nuclear Waste Partner will work through the Waste Operating Unit (\"Waste OU\"). The Waste OU is part of the Remediation Portfolio, it includes a dedicated programme providing enabling activities across the Sellafield enterprise with major customers being the DNWP Remediation \u0026 Retrievals Partners.",
    "id": "CF-0261000D4L000000iAvzUAE",
    "items": [
      {
        "deliveryAddresses": [
          {
            "postalCode": "CA20 1PG"
          },
          {
            "countryName": "British Oversea Territories"
          },
          {
            "countryName": "Channel Islands"
          },
          {
            "countryName": "Europe"
          },
          {
            "countryName": "Isle of Man"
          },
          {
            "countryName": "Rest of the World"
          },
          {
            "countryName": "United Kingdom"
          }
        ],
        "id": "1"
      }
    ],
    "mainProcurementCategory": "works",
    "procurementMethod": "selective",
    "procurementMethodDetails": "Restricted procedure (above threshold)",
    "status": "complete",
    "suitability": {
      "sme": false,
      "vcse": false
    },
    "tenderPeriod": {
      "endDate": "2024-06-27T16:00:00+01:00"
    },
    "title": "Decommissioning Nuclear Waste Partnership",
    "value": {
      "amount": 4600000000,
      "currency": "GBP"
    }
  }
}