Trawsfynydd Reactor Buildings Height Reduction

  • Magnox Limited

F02: Contract notice

Notice reference: 2023/S 000-015183

Published 27 May 2023, 1:17am

Section one: Contracting authority

one.1) Name and addresses

Magnox Limited

Oldbury Naite, Oldbury


BS35 1RQ


Ruth Cox




United Kingdom

NUTS code

UK - United Kingdom

National registration number


Internet address(es)

Main address


Buyer's address


one.3) Communication

The procurement documents are available for unrestricted and full direct access, free of charge, at


Additional information can be obtained from the above-mentioned address

Tenders or requests to participate must be submitted electronically via


Tenders or requests to participate must be submitted to the above-mentioned address

Electronic communication requires the use of tools and devices that are not generally available. Unrestricted and full direct access to these tools and devices is possible, free of charge, at


one.4) Type of the contracting authority

Body governed by public law

one.5) Main activity

Other activity

Nuclear Decommissioning

Section two: Object

two.1) Scope of the procurement

two.1.1) Title

Trawsfynydd Reactor Buildings Height Reduction

two.1.2) Main CPV code

  • 45111100 - Demolition work

two.1.3) Type of contract


two.1.4) Short description

Partial demolition of each Reactor Building, reducing the overall height , together with an extensive package of civil new build and remedial works

See full description and Scope document for further details

two.1.5) Estimated total value

Value excluding VAT: £53,000,000

two.1.6) Information about lots

This contract is divided into lots: No

two.2) Description

two.2.2) Additional CPV code(s)

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

two.2.3) Place of performance

NUTS codes
  • UKL12 - Gwynedd
Main site or place of performance

Trawsfynydd Site
Blaenau Ffestiniog
LL41 6NT

two.2.4) Description of the procurement

Magnox 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.

two.2.5) Award criteria

Price is not the only award criterion and all criteria are stated only in the procurement documents

two.2.6) Estimated value

Value excluding VAT: £53,000,000

two.2.7) Duration of the contract, framework agreement or dynamic purchasing system

Duration in months


This contract is subject to renewal


two.2.9) Information about the limits on the number of candidates to be invited

Envisaged number of candidates: 5

Objective criteria for choosing the limited number of candidates:

As set out in the Expression of Interest

two.2.10) Information about variants

Variants will be accepted: No

two.2.11) Information about options

Options: No

two.2.13) Information about European Union Funds

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

Section three. Legal, economic, financial and technical information

three.1) Conditions for participation

three.1.1) Suitability to pursue the professional activity, including requirements relating to enrolment on professional or trade registers

List and brief description of conditions

All requirements are set out in the Selection Questionnaire Section

three.1.2) Economic and financial standing

Selection criteria as stated in the procurement documents

three.1.3) Technical and professional ability

Selection criteria as stated in the procurement documents

Section four. Procedure

four.1) Description

four.1.1) Type of procedure

Competitive procedure with negotiation

four.1.5) Information about negotiation

The contracting authority reserves the right to award the contract on the basis of the initial tenders without conducting negotiations

four.1.8) Information about the Government Procurement Agreement (GPA)

The procurement is covered by the Government Procurement Agreement: Yes

four.2) Administrative information

four.2.2) Time limit for receipt of tenders or requests to participate


26 June 2023

Local time


four.2.3) Estimated date of dispatch of invitations to tender or to participate to selected candidates

11 August 2023

four.2.4) Languages in which tenders or requests to participate may be submitted


four.2.6) Minimum time frame during which the tenderer must maintain the tender

Tender must be valid until: 27 November 2024

Section six. Complementary information

six.1) Information about recurrence

This is a recurrent procurement: No

six.4) Procedures for review

six.4.1) Review body

Magnox Limited

Oldbury Naite, Oldbury


BS35 1RQ


United Kingdom

Internet address


six.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)