---
title: "DNWP0071/LOT1A/CALDER Ring Fence"
ocid: "ocds-b5fd17-ea174094-ce1b-441d-9704-5702001ecdc6"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-ea174094-ce1b-441d-9704-5702001ecdc6"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-ea174094-ce1b-441d-9704-5702001ecdc6.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-ea174094-ce1b-441d-9704-5702001ecdc6.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "Sellafield Ltd"
published: "2026-09-14"
---

# DNWP0071/LOT1A/CALDER Ring Fence

Buyer: Sellafield Ltd  
Current stage: Award  
OCID: ocds-b5fd17-ea174094-ce1b-441d-9704-5702001ecdc6

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## Summary

Sellafield Ltd procured decommissioning works under the requirement titled “DNWP0071/LOT1A/CALDER Ring Fence”. The work is classified as decommissioning services and is to be delivered in the North West of England, in the United Kingdom. This is a specialist industrial works requirement associated with the decommissioning of facilities or infrastructure within the Calder Ring Fence scope. The buying organisation is Sellafield Ltd, based in Whitehaven. The opportunity is relevant to businesses providing decommissioning, dismantling, site clearance or related specialist works in the nuclear or similarly regulated industrial environment, particularly those able to operate in the North West.

The procurement has been completed and awarded through a selective call-off from a framework agreement. The award was made to AMENTUM CLEAN ENERGY LIMITED on 14 September 2026, at a value of £478,696.66. The contract runs from 14 September 2026 to 14 May 2027. The underlying tender had a submission deadline of 26 August 2026 at 12:00. It was classified as works and evaluated through the framework call-off process. The award is active and covers the single Calder Ring Fence requirement. The published procurement value and awarded value are the same. Sellafield Ltd is the buyer and Amentum Clean Energy Limited is the selected supplier.

For suppliers that did not win this procurement, the award demonstrates Sellafield Ltd’s need for specialist decommissioning works delivered through an established framework route. A credible competitor for a comparable requirement would need demonstrable capability in complex industrial decommissioning, safe work planning, dismantling or clearance activities, and the ability to manage delivery within a controlled nuclear site environment. The stated suitability assessment indicates that the requirement was not aimed at SMEs or voluntary, community and social enterprises, so competitors should be structured and resourced for substantial, technically demanding works rather than small-scale general contracting. Framework membership or access to an eligible framework route would also be important.

## Notice

DNWP0071/LOT1A/CALDER Ring Fence

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/30f2de24-e12f-49e3-ad1c-a792adb32048 |
| Notice type | Award Notice |
| Procurement type | Framework |
| Procurement category | Works |
| Procurement method | Selective |
| Procurement method details | Call-off from a framework agreement |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 14 Sep 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 14 Sep 2026 |
| Contract period | 14 Sep 2026 - 14 May 2027 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £478,696 |
| Lots value | Not specified |
| Awards value | £478,696 |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Not specified |
| Awards status | Active |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | Sellafield Ltd |
| Locality | WHITEHAVEN |
| Postcode area | Carlisle |
| Postcode | CA28 7SJ |
| Country | England |
| ITL 1 | TLD North West (England) |
| ITL 2 | TLD1 Cumbria |
| ITL 3 | TLD13 Cumberland |
| Local authority | Cumberland |
| Electoral ward | Kells and Sandwith |
| Westminster constituency | Whitehaven and Workington |
| Delivery location | TLD North West (England) |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | Amec Nuclear UK Ltd |

## CPV Codes

### Divisions

- 98 - Other community, social and personal services

### Codes

- 98391000 - Decommissioning services

## Release History

- 14 Sep 2026 at 15:10 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/30f2de24-e12f-49e3-ad1c-a792adb32048

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/30f2de24-e12f-49e3-ad1c-a792adb32048
  14th September 2026 - Awarded contract notice on Contracts Finder

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-b5fd17-ea174094-ce1b-441d-9704-5702001ecdc6. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-ea174094-ce1b-441d-9704-5702001ecdc6.json.