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Taking the Rolls-Royce Small Modular Reactor (SMR) to the next step

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The Environment Agency’s New Reactors Assessment Team is leading the assessment of the Rolls-Royce SMR nuclear power station design. Andrew Pynn, Senior Advisor for the project, highlights the benefits of generic design assessment (GDA) and what happens next for this innovative new design.

New nuclear power stations are an important part of the government’s plans for generating secure low carbon energy. Just last week the government launched its ‘Powering Up Britain’ plan and ‘Great British Nuclear’ which will start to deliver the ambition to build up to 24GWe of nuclear capacity by 2050.

At the Environment Agency and Natural Resources Wales, the work delivered by our nuclear regulators is all about protecting communities and the environment. We’ve been looking at the Rolls-Royce SMR design to determine if it is environmentally acceptable for England and Wales.

After a year of learning about this new design and reviewing information provided by Rolls-Royce SMR Ltd, we’ve completed the preparatory step of our Generic Design Assessment and declared that the company is ready to start Step 2 today.

Working in partnership

The UK’s nuclear regulators work together, assessing designs at an early stage, before construction begins. Doing it early means we can spot any design issues that might impact on the environment and ask Rolls-Royce SMR Ltd’s designers to address them.

The Office for Nuclear Regulation (ONR) cover the safety and security whilst we and Natural Resources Wales (NRW) focus on protection of the environment and radioactive waste.

The regulators have set up a joint programme office to help deliver the GDA and our teams work together in person and virtually as part of a single project. Our communications and engagement with stakeholders is also joined up and we’ve set up joint webpages to provide information about GDA.

What happens in Step 2?

The GDA process has up to 3 steps, with our assessment getting more detailed as we progress. Now we’ve moved to Step 2 our team of nuclear regulators and scientists will be scrutinising even more information from Rolls-Royce SMR Ltd, identifying issues and highlighting any concerns we have. Step 2 is when the first technical assessment takes place and we focus on what features and arrangements are in place to protect the environment. This includes looking at how the design can be optimised to reduce the amount of radioactive waste produced and how that waste is managed and disposed of. We meet regularly with the company and it’s at these meetings where we talk thorough what we’ve found and make sure the Rolls-Royce engineers understand our expectations.

Tell us and the company what you think

Now we’ve launched Step 2 it’s time for the public and stakeholders to get involved. Engagement with communities is important to us. Whilst we don’t yet know where this reactor design could be located, Rolls Royce SMR Ltd has highlighted some sites it is interested in so we’ll start to focus our engagement initially in those areas. We also want to hear from engineers, academics, environmental groups, NGOs and others who are interested in nuclear reactor designs and their impact on the environment.

So how can you get involved? When we start a new GDA we ask the reactor design company to set up a ‘comments process’. This includes launching a website, providing information and asking for feedback on the design and information provided. Have a look at Rolls-Royce SMR Ltd’s new website and consider making a comment. We’ll see all your questions and comments, and the answers provided by the company. Your comments could help inform our assessments.

We’ll also hold a public consultation later in the process, if we go into Step 3 of the GDA.

Read the reports including a summary targeted at a non technical audience!

Contact us for more information about this GDA.

All images provided by Rolls-Royce SMR Ltd

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  1. Comment by George Davies posted on

    We must simply get on with this project. What other nation would allow such delays and cause its national champion to face such uncertainty?

  2. Comment by Jeannette Dennis posted on

    These small reactors are a brilliant and innovative. What is wrong with the government who keeps seeking foreign interest when we have the answers right here in the UK. For goodness sake let’s get started on this project.

  3. Comment by Joshua Johnson posted on

    For a government that believes we are in a 'climate emergency' they are painfully slow and reluctant to pursue the only realistic option to meet our energy needs.
    The public investment is chump change relatively speaking, the regulators seem more interested in hearing from activist groups campaigning against nuclear energy than anyone who has relevant background and knowledge in the field.
    Meanwhile SMR efforts in other nations are overtaking RRs efforts. Once again history repeats itself and British engineers are left behind the curve thanks to a feckless govt too short-sighted to see the benefits of new and innovative technology.

  4. Comment by Simon P David posted on

    I’m sorry this seems incredibly slow. And why exactly should comments from NGOs “inform your assessment”? GDA is supposed to be a technical review the product of not a four year talking shop - leave political debate to parliament please. We’d quite like the lights to stay on.

  5. Comment by Gary Proudfoot posted on

    I believed in nuclear power 50 years ago, enough to take a doctorate in nuclear physics, but then saw no future in it. I watched other countries such as India overtake the UK in ongoing development of nuclear technology seeing it as a necessary part of future energy supply. The world is resource limited. The modular design and Gen 4 technologies are at last revitalising the landscape but young people need to buy into it. It is tremendous that SMR technology is moving forward but if the pace is too slow, and not marketed to today’s generation, they, like me will chose other fields rather than risk their future to chance. No matter how good it is, silent development of this technology is not enough if young people are to commit their careers to it.

  6. Comment by Barry Clissold posted on

    We have seen what has happened with Russia and gas supply.It is ridiculous for this government to be involving foreign companies in our basic resources. We must be in control of our own destiny. Even supposed friendly countries may have differing interests to UK in the future.

  7. Comment by Roy Thorpe posted on

    We've left the EU, or have supposedly left. Why oh why has the government thrown open the doors to outside (UK) competition. We have Rolls Royce, which has a proven record in mini-nukes on Subs. So, why doesn't the Government just get on with it and start INVESTING in BRITAIN before it's too late.

  8. Comment by Sass Levi posted on

    Please get on with it. Your teams are painfully slow. We need RR SMRs today. The slow pace risks more damage to the environment meanwhile, and puts our energy security at risk of falling into the hands of other countries competing in this area. Please support Rolls Royce, a flagship UK company, and don’t slow them down as they compete with others. We need 12 UK built SMRs around the country ‘tomorrow’. Not in 2035 !!

  9. Comment by John Cowley posted on

    The government really need to move quickly on approving these new SMR nuclear power stations. The UK desperately needs to be energy independent, the quicker we are energy independent the better, once we achieve this, it will be a win win for the UK! We should also be investing in Hydro Generators, we are an island, so there are may places that we could install Hydro Generators. Why the power of the River Severn has not been harnessed to provide virtually free (once installed) energy, I will never know. Look at the benefits the Hoover dam has achieved since it was completed in 1936, 87 years of green energy. Why have the UK not harnessed Hydro energy, it would definitely be beneficial for the UK.


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