Trawsfynydd Reactor Buildings Height Reduction
A Contract Award Notice
by NUCLEAR RESTORATION SERVICES LIMITED
- Source
- Find a Tender
- Type
- Contract (Works)
- Duration
- not specified
- Value
- £53M-£72M
- Sector
- CONSTRUCTION
- Published
- 07 Oct 2025
- Delivery
- not specified
- Deadline
- n/a
Concepts
Location
Trawsfynydd Site<br/>Blaenau Ffestiniog<br/>Gwynedd<br/>LL41 6NT
3 buyers
- Nuclear Restoration Services Warrington
1 supplier
- Costain London
Description
Partial demolition of the two reactor buildings, reducing their overall height , together with an extensive package of civil new build and remedial works.
Total Quantity or Scope
NRS Ltd. is responsible for the safe and compliant decommissioning of Trawsfynydd Nuclear Power Station in Gwynedd, North Wales. Built in the early 1960’s, the Site ceased generating electricity in 1991 and has been undertaking decommissioning works since. The next phase of the decommissioning programme will principally feature modification of the two former civil nuclear Reactor Buildings which, in current state, offer safe and secure storage of housed plant. The project will involve the systematic deconstruction and partial demolition of each Reactor Building, delivering a reduced height configuration compliant with existing planning commitments and lessening the visual impact on the landscape. In addition, a package of civil new build and remedial works will be delivered to prolong the durability of the retained structures and reduce disproportionate asset management liability. The end product will offer compliant protection of the stored inventory, ready for successor phases of decommissioning activity on the Site.
Award Detail
| 1 | Costain (London)
|
Award Criteria
| Social Value | 10.0 |
| Technical | 40.0 |
| Project Management | 23.0 |
| PRICE | 27.0 |
CPV Codes
- 45111100 - Demolition work
- 45262330 - Concrete repair work
- 45111000 - Demolition, site preparation and clearance work
- 45262110 - Scaffolding dismantling work
- 45262120 - Scaffolding erection work
- 45500000 - Hire of construction and civil engineering machinery and equipment with operator
- 45111200 - Site preparation and clearance work
- 45200000 - Works for complete or part construction and civil engineering work
- 45113000 - Siteworks
- 45262660 - Asbestos-removal work
- 45510000 - Hire of cranes with operator
- 45262100 - Scaffolding work
- 45262310 - Reinforced-concrete work
- 45262300 - Concrete work
- 45111300 - Dismantling works
- 45110000 - Building demolition and wrecking work and earthmoving work
- 45000000 - Construction work
- 45210000 - Building construction work
Indicators
- Award on basis of price.
Reference
- FTS 062969-2025