IN Brief:
- Turner & Townsend and NUVIA have been appointed as Hinkley Point C’s independent technical verifier.
- The review covers decommissioning costs, technical deliverability, risk, and waste-management assumptions.
- Full reviews will continue every five years, supported by annual updates.
Turner & Townsend and NUVIA have been appointed to provide independent technical verification for Hinkley Point C’s Decommissioning and Waste Management Plan.
The Nuclear Decommissioning Fund Company selected the two businesses to examine whether the project’s cost estimates, technical proposals, risk provisions, and waste assumptions are appropriate, deliverable, and aligned with regulatory requirements.
Turner & Townsend will lead the programme and provide independent cost and risk review, while NUVIA will assess the technical feasibility of the proposed decommissioning work and the assumptions used for radioactive-waste management and disposal.
The initial review will support submission of the plan to the Secretary of State before first criticality at the Somerset nuclear station. Full assessments will then take place at least every five years, accompanied by annual updates intended to keep funding and delivery assumptions current.
Under the Energy Act 2008, new nuclear power stations must have a robust and fully funded plan covering decommissioning and waste management before electricity generation begins. The requirement is designed to ensure that future liabilities are identified and financed during the operating life of the asset.
Alan Sinclair, Director and Head of Energy and Natural Resources at Turner & Townsend UK, said: “Independent verification is essential to ensuring that provisions for the UK’s next generation nuclear assets are robust, transparent and deliverable.”
Nicola Edson, Director of Technical Services and Consulting at NUVIA UK, said: “Our role is to work collaboratively to provide the clear analysis that helps ensure long term plans are grounded in sound technical understanding.”
The appointment arrives as Hinkley Point C moves further into mechanical, electrical, and controls installation. Civil construction on the first reactor unit is increasingly giving way to pipework, cabling, valves, equipment installation, testing, and nuclear-grade documentation.
Although decommissioning remains decades away, the assumptions made during construction and commissioning will shape the eventual cost. Material selection, plant configuration, equipment records, access strategy, radioactive inventory, and future dismantling methods all influence the work required after generation ends.
Information created during the current phase will therefore become part of the long-term decommissioning evidence base. Drawings, asset records, configuration changes, test results, material certificates, and maintenance histories can reduce uncertainty when systems are later modified, isolated, dismantled, or packaged as waste.
Estimating costs over such a long period remains difficult because technology, regulation, waste facilities, labour rates, and market capacity will change. A credible plan must therefore make its assumptions transparent and include a mechanism for regular revision rather than relying on a fixed forecast prepared before the plant operates.
Independent verification separates the operator’s planning from the judgement over whether its provisions are sufficient. Cost review will examine quantities, productivity, escalation, uncertainty, programme duration, waste charges, contingency, and the interfaces between defuelling, dismantling, decontamination, packaging, transport, storage, and site restoration.
Technical assessment is equally important because a cost model is only credible when attached to a workable method. The proposed sequence must account for radiation conditions, access, remote handling, temporary facilities, equipment removal, structural modification, waste characterisation, and the availability of treatment and disposal routes.
Hinkley’s twin EPR design may provide opportunities for repeat learning. The two units share a common design, while similar reactors are being delivered or operated elsewhere, allowing construction, operation, maintenance, and later decommissioning evidence to refine future assumptions.
Site-specific conditions and UK regulatory requirements will still govern the final approach. Common design can improve understanding, but it does not remove differences in operating history, contamination, plant modifications, waste routes, or local infrastructure.
The funded model also connects present construction decisions with long-term asset responsibility. Documentation that may appear secondary during installation can materially reduce uncertainty when plant systems are maintained and eventually removed.
Nuclear projects have long operated under demanding configuration and quality-assurance regimes, yet the underlying principle extends across construction: the physical asset cannot be separated from the information showing how it was designed, built, altered, inspected, and tested.
Turner & Townsend and NUVIA will now begin the first assessment ahead of initial operation. Their work will test whether the proposed financial provisions and technical methods remain credible while Hinkley Point C continues through installation, commissioning, and the transition towards generation.
