# HEx1 Phase 1A - Define

> A sourced UK public sector contract award published by Sellafield Ltd.

## Key facts

- Buyer: [Sellafield Ltd](/buyers/sellafield-ltd/contract-awards)
- Supplier: [AtkinsRealis](/suppliers/atkinsrealis/public-sector-contract-awards)
- Award value: £2,913,847
- Tender value: £4,000,000
- Award date: 19 November 2025
- Published: 8 December 2025
- Contract start: 19 November 2025
- Contract end: 3 May 2027
- Stage: awarded
- Procurement category: services
- Notice ID: 6fc42b82-9a81-465c-8a84-e188d800a9f1-875020
- OCID: ocds-b5fd17-14a20e50-aef8-4283-a6fd-f626a47fee36

## Description

The scope of the Phase 1A Define contract is to provide: Independent integration of the Phase 1A design for the Heat Exchanger lifting scheme and equipment including lifting collars and cradles; Ongoing support to Sellafield during the manufacturing phase, ultimately providing UKCA Marking, Declarations of Conformity and completed Technical File to the Employer on key products\.

## Related contract awards

- [DNWP0019/LOT1B/ WAGR / PIE ILW - Detailed Design](/contracts/ocds-b5fd17-558d7ec4-e768-4d6b-bcea-fe3a6571f542) — Sellafield Ltd
- [Contractor Compliance Auditing 2026-2028](/contracts/ocds-b5fd17-98447d67-3a0d-4576-9ee9-0326c17358b0) — Sellafield Ltd
- [DNWP0074/LOT1B/MASFE wash out](/contracts/ocds-b5fd17-b090d96e-5693-4f69-bb35-d0e883669d83) — Sellafield Ltd
- [Enterprise Asset Management](/contracts/ocds-b5fd17-86728be0-3e2b-4006-8d94-228bcd3b41ed) — Sellafield Ltd
- [Project Management and Multidiscipline Design Services](/contracts/ocds-b5fd17-c3a27cc7-9ebc-4020-a568-a6aa69dfb7cc) — Tyne Coast College
- [YNE-MMF-DA-Bolton Ings](/contracts/ocds-b5fd17-60431925-4d96-4209-81ab-79e3143a484c) — DEFRA
- [YNE-MMF-DA-Sprotbrough and Hexthorpe](/contracts/ocds-b5fd17-a4a19ae7-9039-427a-a5c5-732d5ac773fa) — DEFRA
- [Croftlands - DARTS services for residential and drainage proposals](/contracts/ocds-b5fd17-0023ac11-17a4-4a16-aa7e-cedc0189c5b2) — Homes England \(the name adopted by the Homes and Communities Agency\)
- [Taxi and MPV \(1-8 seats\) Passenger Assistant - Taxi and MPV \(1-8 seats\) Passenger Assistant](/contracts/ocds-b5fd17-72db28b1-c882-4e40-8470-acd916a51a98) — East Sussex County Council
- [QLT354 2026-08-26 \(0900\) Leiston - Roman Hill Primary School, Lowestoft \(4 seats and a PA\) - AWARD](/contracts/ocds-b5fd17-3418d9ed-524a-41de-8487-25e33a827cf8) — Suffolk County Council Passenger Transport
- [QBR087 2026-08-26 \(0900\) Lowestoft / Worlingham - The Woodview Project, Worlingham \(6 seats and a PA\) - AWARD](/contracts/ocds-b5fd17-75a81455-cf68-41f3-8b47-ece5ddb308f0) — Suffolk County Council Passenger Transport
- [QOC940 2026-08-25 \(0900\) Lowestoft - Ness Point School, Gt Yarmouth \(4 seats\) - AWARD](/contracts/ocds-b5fd17-4dc15fef-5535-4fdf-b910-40ae6110e71d) — Suffolk County Council Passenger Transport

## Source

[View the original notice on Contracts Finder](https://www.contractsfinder.service.gov.uk/Notice/6fc42b82-9a81-465c-8a84-e188d800a9f1-875020)