Scope
Reference
T/RAF119/25
Description
The UK Atomic Energy Authority's main HV Pulsed Power supply to the Culham site is via a dedicated overhead line fed directly from the National Grid at 400kV, transformed down to 33kV. The main distribution substation for this supply is J5 substation, located at the north end of Culham Campus. The substation is undergoing a significant upgrade in 2026. The scope is for part of that upgrade. It covers the design, manufacture, delivery, installation, and commissioning of: • A replacement 415V AC Distribution Board, • 3 replacement auxiliary supply cubicles including isolation transformers, • A new 400/33 kV inter-trip panel to transfer trip signals between the 400 kV and 33 kV substations, and • A new 400 kV revenue metering panel capable of metering the 400 kV supply for each of the three Super-Grid Transformers (SGTs). All of the above must be capable of integration with a new IEC 61850 SCADA system.
Total value (estimated)
- £450,000 excluding VAT
- £540,000 including VAT
Above the relevant threshold
Contract dates (estimated)
- 1 February 2026 to 27 March 2026
- Possible extension to 26 March 2027
- 1 year, 1 month, 26 days
Main procurement category
Goods
Additional procurement category
Works
CPV classifications
- 31210000 - Electrical apparatus for switching or protecting electrical circuits
- 31000000 - Electrical machinery, apparatus, equipment and consumables; lighting
- 45311200 - Electrical fitting work
- 45317300 - Electrical installation work of electrical distribution apparatus
Contract locations
- UKJ14 - Oxfordshire
Engagement
Engagement deadline
11 November 2025
Engagement process description
Participation
Particular suitability
Small and medium-sized enterprises (SME)
Submission
Publication date of tender notice (estimated)
21 November 2025
Contracting authority
UK Atomic Energy Authority
- Public Procurement Organisation Number: PLJV-1169-JTDD
Culham Science Centre
Oxfordshire
OX14 3DB
United Kingdom
Contact name: Robert Franklin
Telephone: +44 1235466915
Email: robert.franklin@ukaea.uk
Website: https://www.gov.uk/government/organisations/uk-atomic-energy-authority
Region: UKJ14 - Oxfordshire
Organisation type: Public authority - central government