---
title: "Provision of Internal and Criticality Accident Dosimetry Service"
ocid: "ocds-h6vhtk-05d9c8"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05d9c8"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05d9c8.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05d9c8.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "NUCLEAR RESTORATION SERVICES LIMITED"
published: "2026-04-23"
---

# Provision of Internal and Criticality Accident Dosimetry Service

Buyer: NUCLEAR RESTORATION SERVICES LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-05d9c8

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## Summary

The public procurement contract for the "Provision of Internal and Criticality Accident Dosimetry Service" was awarded by Nuclear Restoration Services Limited, a sub-central government authority based in Warrington, United Kingdom. The contract was signed on 16 April 2026 and commenced on 25 April 2026, running until 31 March 2028, with a possible extension until 31 March 2029. The contract involves dosimetry services at the Dounreay site in Scotland, falling under the radiation protection services category. This direct award was made to Nuvia due to the absence of competition for technical reasons. Key compliance requirements include adherence to Ionising Radiations Regulations and Radiation (Emergency Preparedness and Public Information) Regulations.

This tender represents a notable opportunity for large enterprises in the radiation protection industry, particularly those able to meet stringent technical demands without competition. Businesses experienced in dosimetry services can leverage this contract to strengthen their market presence in the nuclear restoration sector. Despite the direct award status due to technical exclusivity, organisations with similar capabilities may seek collaborative engagements or sub-contracting opportunities with Nuvia to gain exposure in this niche market and participate in the evolving landscape of nuclear site services.

## Notice

The scope of the services to be provided comprises the following activities: * The assessment of radiological dose arising from internal and criticality accident exposures. * Air sample counting, recording and reporting of results. * Assess and record doses arising from criticality accident conditions. * Review dosimetry requirements for facilities and generate the plant dosimetry assessment report. * Demonstrate compliance with the Ionising Radiations Regulations (IRRs) and the Radiation (Emergency Preparedness and Public Information) Regulations (REPPIR). * Demonstrate that NRS Dounreay is fulfilling the duties and responsibilities of a Nuclear Site Licensee where applicable.

### Procurement Information

Due to the absence of competition for technical reasons, only Nuvia can supply the goods, services or works required and there are no reasonable alternatives to those goods, services or works.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/037079-2026 |
| Notice type | UK7 - Contract Details Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Direct |
| Procurement method details | Direct award |
| Tender suitability | SME |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 23 Apr 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 4 Nov 2025 |
| Contract period | 24 Apr 2026 - 31 Mar 2028 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | £3,775,191 |
| Contracts value | £3,775,191 |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Active |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | NUCLEAR RESTORATION SERVICES LIMITED |
| Locality | WARRINGTON |
| Post town | Warrington |
| Postcode | WA3 6GR |
| Country | England |
| ITL 1 | TLD North West (England) |
| ITL 2 | TLD6 Cheshire |
| ITL 3 | TLD61 Warrington |
| Local authority | Warrington |
| Electoral ward | Birchwood |
| Westminster constituency | Warrington North |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | NUVIA |

## CPV Codes

### Divisions

- 90 - Sewage, refuse, cleaning and environmental services

### Codes

- 90721600 - Radiation protection services

## Release History

- 23 Apr 2026 at 12:33 - Award - UK7 - Contract Details Notice - https://www.find-tender.service.gov.uk/Notice/037079-2026
- 16 Mar 2026 at 14:59 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/023605-2026
- 4 Nov 2025 at 12:07 - Award - UK5 - Transparency Notice - https://www.find-tender.service.gov.uk/Notice/070791-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/037079-2026
  23rd April 2026 - Contract details notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/023605-2026
  16th March 2026 - Contract award notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/070791-2025
  4th November 2025 - Transparency notice on Find a Tender

## Notice URLs

- https://www.gov.uk/government/organisations/nuclear-restoration-services
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## 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-h6vhtk-05d9c8. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05d9c8.json.