---
title: "MSSS (Magnox Swarf Storage Silo) Plant Control System Offline Feasibility Rig"
ocid: "ocds-h6vhtk-06054e"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06054e"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-06054e.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-06054e.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "SELLAFIELD LIMITED"
published: "2026-01-14"
---

# MSSS (Magnox Swarf Storage Silo) Plant Control System Offline Feasibility Rig

Buyer: SELLAFIELD LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-06054e

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## Summary

The procurement process conducted by Sellafield Limited involves completing an award for the "MSSS (Magnox Swarf Storage Silo) Plant Control System Offline Feasibility Rig". This contract pertains to the industrial process control equipment industry, with the delivery location specified as Sellafield (UKD11). The process, which involved a limited procurement method without prior publication of a call for competition, has reached its completion stage with a contract signed on 12th January 2026. The industrial equipment required includes a replica of the existing plant control system, delivered by ABB LTD, initially involved in supplying the original system.

This procurement tender offers niche opportunities primarily for firms specialising in industrial control systems, particularly those familiar with ABB's technology. Given the specialised nature of replicating the existing system, businesses already possessing prior experience with ABB's system components and software will be well-suited to meet the specific technical requirements. While competition was absent for technical reasons in this instance, similar future projects may open doors for businesses capable of delivering compatible and innovative control solutions for legacy systems in nuclear decommissioning facilities.

## Notice

Supply and deliver an offline test rig replica of the online MSSS (Magnox Swarf Storage Silo)/ABB control system installed in MSSS. The rig will provide the equipment needed to carry out testing to ensure the continued support of the existing control system within MSSS.

### Lot Information

Lot 1

Supply and deliver an offline test rig replica of the existing online MSSS/ABB DAMS PES system installed in MSSS. The offline engineering system shall be based on 800xA System Version 6.1.1.1 which is a long time support version (LTS). 

Scope of Supply Summary:
1. Virtual Server Host
2. Thin Client
3. New suitable AC800M Controller and Ethernet IO interface cards
4. Cabinet
5. All the necessary software and Licences
6. System Engineering
7. Testing

The test rig will enable the existing bespoke control systems applications responsible for running and monitoring of systems and processes within MSSS to be updated offline to the latest supported version of the ABB software which is required as the existing system is now obsolete and no longer supported - further, elements of the hardware are now obsolete and require the newer version of 800xA (6.1) software to operate. The rig will provide the equipment needed to carry out necessary testing to ensure the continued support and operation of the control system within MSSS.

### Procurement Information

The offline feasibility rig is required to be a replica of the existing plant system installed on the MSSS plant - which was supplied originally by ABB Ltd. Therefore, as it is a replica of an existing plant system, competition is absent for technical reasons and can only be provided by the original equipment manufacture. Regulation 32(5)(b) PCR 2015 applies (for additional deliveries by the original supplier which are intended either as a partial replacement of supplies or installations or as the extension of existing supplies or installations where a change of supplier would oblige the contracting authority to acquire supplies having different technical characteristics which would result in incompatibility or disproportionate technical difficulties in operation and maintenance).

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/002939-2026 |
| Notice type | Award Notice |
| Procurement type | Standard |
| Procurement category | Goods |
| Procurement method | Limited |
| Procurement method details | Award procedure without prior publication of a call for competition |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 14 Jan 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 12 Jan 2026 |
| Contract period | Not specified |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SELLAFIELD 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 | TLD11 West Cumbria |

## Supplier

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

## CPV Codes

### Divisions

- 38 - Laboratory, optical and precision equipments (excl. glasses)

### Codes

- 38800000 - Industrial process control equipment and remote-control equipment

## Release History

- 14 Jan 2026 at 09:39 - Award - Award Notice - https://www.find-tender.service.gov.uk/Notice/002939-2026

## Notice URLs

- http://www.abb.com
- https://www.find-court-tribunal.service.gov.uk/courts/royal-courts-of-justice
- https://www.gov.uk/government/organisations/sellafield-ltd

## 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-06054e. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-06054e.json.