Fiona Rayment on the applications of nuclear for net zero and beyond

Episode Summary

Executive Summary: Dr Fiona Raymond traces a 30+ year career showing how nuclear science has expanded beyond electricity into medicine, space, waste management, and policy. She describes growing up in working-class Scotland, rediscovering her scientific path after an early setback, and helping shape UK nuclear strategy while advocating for evidence-based debate, diversity, and mentorship across the sector.

Main Topics: Nuclear’s changing public image and future role (Priority: 5/5): Raymond argues nuclear is increasingly accepted as part of the clean-energy toolbox, supporting energy security, baseload power, and decarbonisation alongside renewables and other low-carbon technologies. Nuclear waste, safety, and public misconceptions (Priority: 5/5): She addresses concerns about radioactive waste, emphasizing its relatively small volume, engineered containment, and the importance of informed democratic debate rather than fear-based assumptions. Early life, education, and scientific curiosity (Priority: 4/5): Her upbringing in industrial Scotland, childhood chemistry set, and experiences with energy insecurity during the 1970s shaped her lifelong interest in science and energy systems. Boron neutron capture therapy and nuclear medicine (Priority: 5/5): Her PhD work used boron-10 in targeted cancer therapy, illustrating how nuclear science can be applied to healing as well as power generation. Career progression through BNFL, NNL, and policy influence (Priority: 5/5): She moved from technical work into leadership roles, then back into science-focused roles, eventually helping create policy-facing institutions like the Nuclear Innovation and Research Office. International collaboration, space applications, and isotopes (Priority: 4/5): Her work on separating americium from waste streams led to applications in space power systems, showing nuclear chemistry’s cross-sector value and global relevance. Mentorship, diversity, and professional leadership (Priority: 4/5): Raymond highlights mentoring women across the UK, France, and the US, and her role as president of the Nuclear Institute as part of building a stronger, more diverse profession.

Key Arguments: Nuclear will remain important for a long time because it supports not only electricity generation but broader decarbonisation of the total energy mix. Public opposition is legitimate in a democracy, but decisions should be based on accurate information rather than myth or misunderstanding. Radioactive waste volumes are comparatively small and can be safely managed with existing engineering and containment technologies. Nuclear technologies have beneficial applications beyond power, including cancer treatment, diagnostics, and space power systems. Career satisfaction depends on staying connected to science and technology; moving away from technical work caused her to "lose her spark." Mentorship is essential for retaining talent, supporting diversity, and passing knowledge to the next generation. Evidence-based institutions like the Nuclear Innovation and Research Office help policymakers make informed decisions about nuclear investment and strategy.

Data Points: Career span: Over 30 years - Raymond’s nuclear career across science, engineering, policy, and leadership Waste proportion radioactive: 6% - She states only a small fraction of nuclear waste is radioactive UK waste volume comparison: Wembley Stadium - She says all UK radioactive waste produced since the 1950s and projected for the next 100 years would fill only Wembley Stadium PhD duration requirement: 4-year chemistry degree - She completed chemistry at the University of Strathclyde before PhD work Year moved to Cumbria: 1992 - She joined British Nuclear Fuels at Sellafield Year of OBE: 2017 - Awarded for services to UK nuclear research and innovation Year of Legion of Honour: 2020 - French state honour for her contribution to nuclear collaboration Mentoring reach: 11 or 12 women - She currently mentors women across the UK, France, and the US UK nuclear electricity contribution: One in five homes - She says UK nuclear has powered roughly one in five homes for the last five decades and more Americium half-life: Over 400 years - Used in space-related heat source applications

Pivotal Quotes: "I made a pact with myself that I would never do a role again that didn't have science or technology associated with it." — Fiona Raymond: Reflecting on leaving purely commercial roles and returning to technical work "People think it's really cool. I think this changed maybe about eight years ago, maybe 10 years ago, something like that." — Fiona Raymond: Describing how public attitudes toward nuclear have become more open and curious "It's not just about baseload electricity. It's also about decarbonising the total energy mix that we have in the UK and internationally." — Fiona Raymond: Summarizing nuclear’s role in future energy systems

Implications: The episode frames nuclear as a versatile, evidence-driven field with growing relevance to climate, health, and space. It suggests future progress depends on public trust, sound policy, technical innovation, and stronger pathways for mentoring and diversity.