UK Public Sector Contracts & Tenders

UKAEA is undertaking refurbishment works to the J5 electrical infrastructure to support the ongoing operation and reliability of the Culham Campus power distribution network. As part of these works, new 33 kV high-voltage cables are required to replace existing assets and support the future electrical capacity requirements of the site.

UKAEA is now seeking market input regarding the implementation of an information management capability that will utilise data held within the Data Lakehouse and maintain relationships with information held in other authoritative UKAEA systems

UKAEA wishes to gather an understanding of the industry capabilities, experience, and limitations in developing a 4-pi scintillator detection system for decay heat measurement.

To identify and assess the suitability of existing technologies to pick and place graphite blocks via a remote teleoperation robotic system with an end effector tool.

The UK Atomic Energy Authority (UKAEA) currently has six Multi Axis CNC Milling & Turning Machining Centres and is looking for interested suppliers in support of the following: - OEM Engineers to carry out annual maintenance - OEM parts and labour supplied and Installed for breakdown / repairs - Supply of new machines Further details of the requirement can be found by downloading the document from the link in this notice. Interested Suppliers are requested to complete and return the Questionnaire via this portal before 12.00 hours BST Fri 4 September 2026.

The MRF Hot Cell bank comprises 3 old, and 2 new, hot cells. These must be integrated to operate under a single nuclear-relevant ventilation system.

The United Kingdom Atomic Energy Authority are looking to engage a Supervisory Control And Data Acquisition (SCADA) specialist to develop a new SCADA system in J5 based on the IEC 61850 protocol, replacing the existing SCADA. The 400/33kV substation, the existing control and automation system, comprising historic CODAS system, SCADA and Programmable Logic Controllers, will be decommissioned and replaced with an advanced site-wide master SCADA system in full compliance with the IEC 61850 protocol. The work includes the design, manufacture, delivery, installation, and commissioning of the complete system, including an operator workstation in J5 control room. The SCADA will provide full control authority in J5 and D8, with intelligent interlocking to prevent failures or operational errors. The system will integrate with all numerical and auxiliary devices, transmitting all alarms, trip signals, and status indications over fibre or Ethernet to the main control room.

This camera/software is to be used on a high heat flux test facility, looking at metallic samples that are induction heated to the stated temperature range. The sample will be in a vacuum vessel and viewed by the camera via a window. The wavelength range comes from the window the camera must see through, although the window could be changed. A set of requirements has also been generated and attached to this notice, it is requested that interested organisations respond through acknowledging whether they can meet the set out requirements via an excel spreadsheet. the value for this piece is an estimation, and the project team would like to use this PMEN to gauge a rough value for the project from responses. responses should be formatted as excel spreadsheets outlining whether or not your company can meet the requirements set out in the attached specifications document. additionally if you feel like you can meet the requirement in a different way, please also state this.

The United Kingdom Atomic Energy Authority has a requirement to expand our Auxiliary Field Power Supplies with the possibility of a full upgrade and expansion. The existing system comprises of: Two modular (x4 Regatron LAB.TC modules each) single-quadrant Regatron rectifiers in two separate cubicles.415V, 3 x 60A input and 32kW output from each sub-module. Options under consideration are upgrading the system to newer modular supplies and expanding from two to four supplies OR the expansion of the system to include two different more modern supplies with the intention to upgrade incrementally over a longer period. The UKAEA seeks market engagement to help inform the process prior to tender.

The United Kingdom Atomic Energy Authority has a requirement for the replacement of an obsolete 415V PDU, which consists of four ACBs – an incoming feed and three subsequent ways. UKAEA are currently reviewing whether a future tender would be for the parts only (for UKAEA to build on site), or a complete PDU solution (all parts manufactured by the supplier and delivered as a distribution panel ready to install), and request market engagement to help inform the decision.

J5 Super Grid Transformer Refurbishment The United Kingdom Atomic Energy Authority would like to invite suppliers who are interested in this requirement to attend a scheduled site visit, prior to a tender exercise being released for the above requirement. Values listed below are an estimate, and the UKAEA are currently undertaking cost exercises alongside this notice, in order to build upon our current estimates and scope development prior to conducting a tender exercise. Interested parties should contact us via the below link in order to arrange attendance at our site visit. Please use the attached site visit request form and return to us via the EU Supply link below. Scheduled Dates: - Wednesday 26th August, 9:00am Further dates are available on request, as well as further visits to be arranged during the tender period. Outline Scope of Requirement: This project concerns the strategic life-cycle management of Super Grid Transformers SGT1A, SGT1B, and SGT1C, located north of the J5 Substation. These critical assets are currently integrated into the 400kV National Grid network and primarily operate in a parallel configuration to ensure grid stability and redundancy. As these assets approach their fifth decade of service, this project represents a shift from reactive maintenance to a formal Asset Life Extension (ALE) Program. By addressing latent defects and obsolescence during the 2026-2027 shutdown, this scope of work aims to "reset" the aging clock of the SGTs, ensuring their continued reliability and operational integrity for a projected further 10 to 15-year life cycle.

The UK Atomic Energy Authority is interested to hear from potential suppliers who have experience in Plasma physics Scrape-Off-Layer (SOL) Fluid Modelling, Edge Plasma Transport and related fusion simulation codes such as EDGE2D, SOLPS or Hermes-3. Further details of the requirement including a market engagement document are available by following the link below.

RAICo has a requirement to develop and test a solution to decontaminate remotely operated vehicles (ROV) operating in nuclear storage ponds. The decontamination process is required to be performed whilst the ROV is submerged within the pond, and the decontamination process must be performed by remote operation. The objective of the decontamination process is to reduce contamination levels to within the permitted threshold required to bring the ROV out of the pond to perform both preventative and essential maintenance operations. The decontamination process is expected to be achieved by hydro-water washing methods or similar, but the project remains open to all effective decontamination techniques.

UKAEA requires a solution for storing relatively small amounts of tritium. Usually, we use getter materials such as depleted Uranium and products have been purchased previously from known suppliers. What has been delivered has not been of high enough quality and we would like to understand what our options are and to make sure our specification is tight. Due to the nature of this project, there is currently no defined value for the project, and the value given is purely theoretical. The technical team would like to use this Pre Market Engagement Notice to understand what is available within the market to develop a robust specification for the future intended tender. A full scope of requirements can be seen in the attached documentation to this PMEN.

Within UKAEA the Lithium Breeding Tritium Innovation (LIBRTI) Programme seeks to create a world leading UK capability for demonstrating the feasibility of powerplant relevant fusion fuel technologies. As part of the facility the Radiation Safety Diagnostics System shall provide continuous monitoring, detection and quantification within the LIBRTI facility to ensure protection of personnel, the environment, and plant assets while enabling safe operation of tritium breeding experiments. Through the design process of the facility UKAEA has identified the technical and functional requirements for the Radiological monitoring instruments required.

The UK Atomic Energy Authority based at Culham Campus, Oxfordshire has a requirement for the provision of an Radiological Dosimetry Service. The Authority requires an Approved Dosimetry Service to undertake assessment and recording of data in relation to radiation doses received by both classified and non-classified persons The service is required for 2 years with the option to extend annually for up to a further 3 years Further details of the requirement along with a market engagement questionnaire can be found in the attached document. A response by close of 27 July 2026 would be appreciated.