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Contract Award Notice

Trawsfynydd Reactor Buildings Height Reduction

  • First published: 08 October 2025
  • Last modified: 08 October 2025
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The buyer is not using this website to administer the notice.

To record your interest or obtain additional information or documents please find instructions within the Full Notice Text. (NOTE: Contract Award Notices and Prior Information Notices do not normally require a response)

Contents

Summary

OCID:
ocds-h6vhtk-0389bb
Published by:
Nuclear Restoration Services Limited
Authority ID:
AA85442
Publication date:
08 October 2025
Deadline date:
-
Notice type:
Contract Award Notice
Has documents:
No
Has SPD:
No
Has Carbon Reduction Plan:
N/A

Abstract

Partial demolition of the two reactor buildings, reducing their overall height , together with an extensive package of civil new build and remedial works.

Full notice text

Contract award notice

Results of the procurement procedure

Section I: Contracting entity

I.1) Name and addresses

Nuclear Restoration Services Limited

02264251

Hinton House, Birchwood Park Avenue, Risley

Warrington

WA3 6GR

UK

Contact person: Fiona Pearse

E-mail: fiona.pearse@nrservices.uk

NUTS: UK

Internet address(es)

Main address: https://www.gov.uk/government/organisations/nuclear-restoration-services

Address of the buyer profile: https://www.gov.uk/government/organisations/nuclear-restoration-services

I.4) Type of the contracting authority

Body governed by public law

I.5) Main activity

Other: Nuclear Decommissioning

Section II: Object

II.1) Scope of the procurement

II.1.1) Title

Trawsfynydd Reactor Buildings Height Reduction

II.1.2) Main CPV code

45111100

 

II.1.3) Type of contract

Works

II.1.4) Short description

Partial demolition of the two reactor buildings, reducing their overall height , together with an extensive package of civil new build and remedial works.

II.1.6) Information about lots

This contract is divided into lots: No

II.1.7) Total value of the procurement

Value excluding VAT: 71 813 292.00  GBP

II.2) Description

II.2.2) Additional CPV code(s)

45262330

45111000

45262110

45262120

45500000

45111200

45200000

45113000

45262660

45510000

45262100

45262310

45262300

45111300

45111100

45110000

45000000

45210000

II.2.3) Place of performance

NUTS code:

UKL12


Main site or place of performance:

Trawsfynydd Site<br/>Blaenau Ffestiniog<br/>Gwynedd<br/>LL41 6NT

II.2.4) Description of the procurement

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. <br/>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.

II.2.5) Award criteria

Quality criterion: Social Value / Weighting: 10%

Quality criterion: Technical / Weighting: 40%

Quality criterion: Project Management / Weighting: 23%

Price / Weighting:  27%

II.2.11) Information about options

Options: No

II.2.13) Information about European Union funds

The procurement is related to a project and/or programme financed by European Union funds: No

Section IV: Procedure

IV.1) Description

IV.1.1) Type of procedure

Competitive procedure with negotiation

IV.1.8) Information about Government Procurement Agreement (GPA)

The procurement is covered by the Government Procurement Agreement: Yes

IV.2) Administrative information

IV.2.1) Previous publication concerning this procedure

Notice number in the OJ S:

2022/S 000-034017

IV.2.9) Information about termination of call for competition in the form of a prior information notice

The contracting authority will not award any further contracts based on the above prior information notice

Section V: Award of contract

A contract/lot is awarded: Yes

V.2 Award of contract

V.2.1) Date of conclusion of the contract

02/10/2025

V.2.2) Information about tenders

Number of tenders received: 3

Number of tenders received from SMEs: 0

Number of tenders received from tenderers from EU Member States: 0

Number of tenders received from tenderers from non-EU Member States: 0

The contract has been awarded to a group of economic operators: No

V.2.3) Name and address of the contractor

Costain Limited

00610201

Seventh Floor, 70 St Mary Axe, London, United Kingdom, EC3A 8BE

London

EC3A 8BE

UK

NUTS: UK

The contractor is an SME: No

V.2.4) Information on value of the contract/lot (excluding VAT)

Initial estimated total value of the contract/lot:

Total value of the contract/lot: : 71 813 292.00  GBP

V.2.5) Information about subcontracting

Section VI: Complementary information

VI.4) Procedures for review

VI.4.1) Review body

Nuclear Restoration Services Limited

Hinton House, Birchwood Park Avenue, Risley

Warrington

WA3 6GR

UK

E-mail: nrs.supplier.queries@nrservices.uk

Internet address(es)

URL: https://www.gov.uk/government/organisations/nuclear-restoration-services

VI.4.2) Body responsible for mediation procedures

London Court of International Arbitration

1 Paternoster Lane

London

EC4M 7BQ

UK

Internet address(es)

URL: https://www.lcia.org/

VI.4.3) Review procedure

Precise information on deadline(s) for review procedures:

In accordance with Chapter 6 of the Public Procurement Contracts Regulations 2015 (as amended).

VI.5) Date of dispatch of this notice

07/10/2025

Coding

Commodity categories

ID Title Parent category
45262660 Asbestos-removal work Special trade construction works other than roof works
45210000 Building construction work Works for complete or part construction and civil engineering work
45110000 Building demolition and wrecking work and earthmoving work Site preparation work
45262330 Concrete repair work Special trade construction works other than roof works
45262300 Concrete work Special trade construction works other than roof works
45000000 Construction work Construction and Real Estate
45111100 Demolition work Demolition, site preparation and clearance work
45111000 Demolition, site preparation and clearance work Building demolition and wrecking work and earthmoving work
45111300 Dismantling works Demolition, site preparation and clearance work
45500000 Hire of construction and civil engineering machinery and equipment with operator Construction work
45510000 Hire of cranes with operator Hire of construction and civil engineering machinery and equipment with operator
45262310 Reinforced-concrete work Special trade construction works other than roof works
45262110 Scaffolding dismantling work Special trade construction works other than roof works
45262120 Scaffolding erection work Special trade construction works other than roof works
45262100 Scaffolding work Special trade construction works other than roof works
45111200 Site preparation and clearance work Demolition, site preparation and clearance work
45113000 Siteworks Building demolition and wrecking work and earthmoving work
45200000 Works for complete or part construction and civil engineering work Construction work

Delivery locations

ID Description
100 UK - All

Alert region restrictions

The buyer has restricted the alert for this notice to suppliers based in the following regions.

ID Description
There are no alert restrictions for this notice.

About the buyer

Main contact:
fiona.pearse@nrservices.uk
Admin contact:
N/a
Technical contact:
N/a
Other contact:
N/a

Further information

Date Details
No further information has been uploaded.

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