---
title: "Replacement of Header Boxes for D3100 Megadoors"
ocid: "ocds-b5fd17-a59be2c5-1c08-4639-a87f-ea7d86172c36"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-a59be2c5-1c08-4639-a87f-ea7d86172c36"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-a59be2c5-1c08-4639-a87f-ea7d86172c36.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-a59be2c5-1c08-4639-a87f-ea7d86172c36.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "NUCLEAR RESTORATION SERVICES LIMITED (DOUNREAY)"
published: "2025-06-10"
---

# Replacement of Header Boxes for D3100 Megadoors

Buyer: NUCLEAR RESTORATION SERVICES LIMITED (DOUNREAY)  
Current stage: Award  
OCID: ocds-b5fd17-a59be2c5-1c08-4639-a87f-ea7d86172c36

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-a59be2c5-1c08-4639-a87f-ea7d86172c36)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-a59be2c5-1c08-4639-a87f-ea7d86172c36.json)

## Summary

The procurement process involved the direct award of a contract by Nuclear Restoration Services Limited (Dounreay) for the "Replacement of Header Boxes for D3100 Megadoors". This project falls under the industry category of installation of doors, windows, and related components, identified by the CPV code 45421100. Located in Thurso, Scotland, the contract began on 22nd May 2025 and is set to conclude by 31st July 2025. This procurement, valued at £47,817.44, utilised a single tender action below the threshold at the award stage on 10th June 2025.

This tender presents a significant opportunity for businesses focusing on construction and door installation services, particularly small and medium enterprises (SMEs) given their suitability for the project. Companies capable of executing specialised installation works in industrial settings, like Assa Abloy Entrance Systems Limited, which secured the contract, can aim for similar opportunities to expand their service offerings in the public sector. This contract exemplifies assured work within the domestic market, enabling businesses to establish or reinforce their presence in government-related projects in the United Kingdom.

## Notice

A direct award contract has been awarded by NRS Limited (Dounreay) for the replacement of Header Boxes for D3100 Megadoors.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/8bdcd1f4-3641-4d69-9683-5377f143d247 |
| Notice type | Award Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Direct |
| Procurement method details | Single tender action (below threshold) |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 10 Jun 2025 |
| Submission deadline | 22 Nov 2024 |
| Future notice date | Not specified |
| Award date | 21 May 2025 |
| Contract period | 21 May 2025 - 31 Jul 2025 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £47,817 |
| Lots value | Not specified |
| Awards value | £47,817 |
| 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 | NUCLEAR RESTORATION SERVICES LIMITED (DOUNREAY) |
| Locality | THURSO |
| Post town | Kirkwall |
| Postcode | KW14 7TZ |
| Country | Scotland |
| ITL 1 | TLM Scotland |
| ITL 2 | TLM2 Highlands and Islands |
| ITL 3 | TLM20 Highlands and Islands |
| Local authority | Highland |
| Electoral ward | Thurso and Northwest Caithness |
| Westminster constituency | Caithness, Sutherland and Easter Ross |
| Delivery location | TLM Scotland |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | ASSA ABLOY ENTRANCE SYSTEMS |

## CPV Codes

### Divisions

- 45 - Construction work

### Codes

- 45421100 - Installation of doors and windows and related components

## Release History

- 10 Jun 2025 at 08:29 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/8bdcd1f4-3641-4d69-9683-5377f143d247

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/8bdcd1f4-3641-4d69-9683-5377f143d247
  10th June 2025 - 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-a59be2c5-1c08-4639-a87f-ea7d86172c36. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-a59be2c5-1c08-4639-a87f-ea7d86172c36.json.