AwardedUnited KingdomWorks£71,813,292
Reactor Buildings Height Reduction (EXECUTION phase)
- Published
- Published 7 October 2025
- Deadline
- Closed 19 December 2024
Overview
The existing Reactor Buildings at Trawsfynydd are now life expired and require works to mitigate against further degradation, thus ensuring they remain safe and compliant for subsequent decommissioning activities. In addition there are long term commitments through the Town and Country Planning process to reduce the visual impact the buildings currently have on the landscape within the Snowdonia National Park.
The Height Reduction project has therefore been implemented with the objective of reducing the height of both reactor buildings such that they are left in a safe and stable configuration for the next phase of works to decommission the Trawsfynydd site whilst significantly reducing ongoing asset investment demands.
The reduction in height will also satisfy the requirements to lessen the visual impact the current full height buildings have within the Snowdonia National Park.
Key details
- Country
- United Kingdom
- Status
- Awarded
- Category
- Works
- Estimated value
- £71,813,292
- Procedure
- Selective
- SME suitable
- No
- Published
- 7 October 2025
- Deadline
- Closed
Hire of cranes with operator
Award outcome
- Awarded value
- £143,626,584
- Award date
- 1 October 2025
- Contract period
- 5 October 2025 → 29 March 2029
- Costain Limited
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Notice history
Every published notice in this contracting process, newest first.
Contract Award Notice
7 October 2025
Contract Award Notice
7 October 2025
Contracting authority
Nuclear Restoration Services Ltd
BuyerTrawsfynydd, United Kingdom
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