Office for Nuclear Regulation, Environment Agency & Natural Resources Wales

Rolls-Royce SMR

Computer generated image of Rolls-Royce SMRDesigner (requesting party): Rolls-Royce SMR Limited

Current position: Assessment of reactor design ongoing


  • April 2023 – July 2024 – Step 2 (fundamental assessment)
  • April 2022 – April 2023 – Step 1 (initiation)

Rolls-Royce SMR website

Public involvement

GDA includes a comments process. The reactor design company is encouraged to publish detailed design information on its website and update it as new information becomes available.

Find out more about getting involved

Regulatory issues and resolution plans

A regulatory issue is a serious regulatory shortfall identified by the regulators. The issues are potentially significant enough to prevent provision of design acceptance.

More on issues

Progress reports

At the end of each step of the assessment, the regulators publish detailed technical reports and a summary report.

Find out more about progress reports

Regulatory observations and resolution plans

A regulatory observation is a potential regulatory shortfall identified by the regulators. It requires action and new work for it to be addressed.

More on observations

GDA issues and resolution plans

Detail of each GDA issue, associated resolution plans andm where appropriate, detail of the closure of issues.

More on GDA issues