Last week, John Billingsley from our Radiation Shielding team ran a full-day internal training session on OpenMC - a Monte Carlo particle transport code used for simulating neutron and photon transport.
OpenMC is a community-developed, open-source code that has gained popularity for its flexibility, active development, and integration with Python. It is widely adopted in the fusion energy sector, where its ability to perform high-fidelity simulations makes it a valuable tool for design and analysis. Increasingly, OpenMC is also being adopted in other areas of the nuclear industry as interest in modern, open-source tools continues to grow.
The training was well attended by members of both the shielding and criticality teams and was structured as a mix of short lectures and hands-on exercises. John introduced the main concepts of building models with OpenMC, including using its Python API to define geometries and materials, set up source terms, and run transport simulations. Attendees had the chance to follow along with practical examples and try building their own models themselves throughout the day.
The informal workshop format encouraged plenty of discussion, and it was a great opportunity for colleagues to explore how OpenMC might be applied in future projects. It was also a valuable chance for Cerberus to build upon our existing experience and expand our capabilities in the use of modern Monte Carlo transport codes.
Thanks to John for putting together such an informative and engaging session and for helping more of the team get familiar with OpenMC.
PTNR Industrial Lecture 2025
Cerberus Nuclear returned to the University of Birmingham to deliver an industrial lecture for the Physics and Technology of Nuclear Reactors (PTNR) masters course. Katrina, Toby, and Zac are all alumni of the PTNR course and were excited to return to campus for this presentation.
Katrina opened the presentation, introducing the students to Cerberus Nuclear and the work we do in radiation shielding, criticality safety, as well as nuclear characterisation and innovation.
Zac then discussed radiation shielding in more detail, talking to the students about the different areas of the shielding design process, the importance of these areas, and examples of how an assessment is carried out for each of these areas. The radiation shielding section of the presentation was capped off with a discussion of shielding verification techniques.
Toby delivered the criticality safety section of the lecture, engaging the students with quickfire questions about the factors affecting criticality. He also discussed his experience working as a criticality safety assessor, and introduced the students to criticality safety training resources including CARTA, Cerberus Nuclear's VR criticality training tool.
Katrina closed the presentation with a discussion of career opportunities in the nuclear industry, shining a spotlight on the Working Party on Criticality (WPC) and The Shielding Forum (TSF). It was a fantastic day and was great to catch up with Professor Paul Norman and meet the new cohort of PTNR students.
We would like to thank Paul for inviting us back and wish the current PTNR cohort the best of luck in the future!
Cerberus Nuclear Return to Support NTEC Radiation Shielding Module
Cerberus Nuclear were pleased to once again support the NTEC Radiation Shielding module at the University of Liverpool, marking another consecutive year of involvement. Our consultant, Nick Seibt, delivered a lecture on the Shielding Design Process in collaboration with The Shielding Forum (TSF), which outlined the industry’s best-practice approach to designing effective radiation shielding for facilities handling radiation sources.
We are proud to continue supporting this aspect of the course and to provide students with valuable insight into the practical challenges and considerations of shielding design in industry.
In addition, our consultant, John Billingsley, provided support throughout the day, guiding students in the use of MCNP. It was also great to see so many students working with Cyclone, a state-of-the-art MCNP model viewer developed by Orthrus Software, which significantly streamlined the modelling of the students' experimental setups. The positive feedback on its usability and impact was especially rewarding to receive.
A big thank you to Professor Andy Boston and the NTEC course team for inviting us back again this year. We look forward to continuing our support in the future.
WPC Workshop on Criticality Safety Assessment Methods
Cerberus Nuclear recently attended the WPC Workshop on Criticality Safety Assessment Methods, which brought together nuclear industry experts, regulators, and professionals to discuss criticality methodology. The event was hosted at the Pride Park Stadium in Derby and focused on regulatory perspectives, foundational methodologies, and practical applications relevant to the nuclear sector.
The workshop began with the regulatory bodies emphasising aligning safety assessments with evolving nuclear standards and maintaining a proactive approach to risk management through early engagement. It was followed by a series of presentation on different Safety Assessment Methods including Design Basis Analysis (DBA), Design Basis Accident Analysis (DBAA) and Double contingency Principle (DCP). Test case assessment methods were presented. A consideration of conditioning factors applied to Initiating Event Frequency within DBA methodology was introduced, as well as a systematic approach to the analysis of double fault methodology within DBA. The workshop concluded with an introduction to Barrier Analysis and Transport Safety Assessment and a relevant exercise.
In conclusion, the workshop highlighted the importance of collaboration among regulators, designers, and operational teams within the nuclear industry, with case studies showcasing effective cross-disciplinary solutions. We would like to thank Rolls Royce for hosting the event and the WPC for organising the workshop.
Cerberus Trip to the Black Country Museum
A small group from Cerberus Nuclear recently took a trip to the Black Country Living Museum, an award-winning open air museum set across 26 acres in the heart of the Black Country. They had a fantastic day exploring over 250 years of history and treating themselves to lots of chips!
The day started off with a fascinating tour of a 19th century drift mine with incredibly low ceilings and only the equivalent of candlelight to guide them through the darkness. They were given a rundown of various roles within the mine and the treacherous conditions people had to work in.
This experience left the group a bit peckish so they got themselves some world famous fish and chips and set up base in the Elephant and Castle pub located within the grounds of the museum.
Following this little pit stop, they took part in an authentic school experience. This included practising their times tables and reciting the alphabet, as well as receiving some outdated forms of punishment if they misbehaved.
They rounded off their exciting day out with a trip to Mad O'Rourkes Pie Factory, where they enjoyed even more chips and some outstanding pies! It was a very successful trip and a great opportunity for the team to spend some quality time together outside of the office.
First Aid Training
Cerberus Nuclear recently took part in First Aid Training delivered by the team at St. John Ambulance.
Debbie took the team through the training for the "Emergency First Aid at Work" certificate, in what was an interesting and engaging day. Training covered a range of areas such as the use of first aid kits, health & safety regulations, how to remain safe, and active skills someone may need to be an effective first aider. These included situations such a choking, severe bleeding, shock, unresponsiveness, and someone not breathing.
The training was received very positively by the team, with first time first aiders and those renewing their training learning from the most up-to-date recommendations and advice. Many thanks to Debbie and the team from St John Ambulance for the day and we would highly recommend the course to other organisations.
Tour of INTA Technology Campus
Earlier this year, our Radiation Shielding Consultants John, Sam, and Zac visited INTA, the National Institute for Aerospace Technologies in Madrid while attending a FLUKA.CERN course.
They had the opportunity to tour multiple areas of the INTA campus and learn from experts working at the cutting edge of the international aerospace industry.
They visited an anechoic chamber where satellites and aircraft undergo a variety of tests. This includes but is not limited to the study of electromagnetic absorption measurements of materials, electromagnetic characterisation of materials in free space, and measurements of the effect of coatings on radiation or scatter patterns.
Credit: INTA Website
They were also shown round the turbojet test centre (picture at the top of the article), where engines are put through rigorous testing to ensure they are suitable for commercial use.
Finally, they explored the astrobiology department and received a lecture on the history of our solar system, as well as some exciting updates regarding ongoing projects at INTA.
Thanks to all those at INTA for providing these opportunities for our team while they were visiting for the FLUKA.CERN course.
Cerberus Nuclear have consolidated our capabilities in a broad range of high energy physics disciplines through our access to the FLUKA code. We are excited to have the opportunity to use FLUKA as a key tool in a variety of projects across the industry.
YGN Introduction to Safety Case, Criticality and Shielding Seminar
For the second year running, Cerberus Nuclear have sponsored the Nuclear Institute (NI)Young Generation Network (YGN) “Introduction to Safety Case, Criticality and Shielding” seminar. This is one of a series of “Intro to” events which aims to give YGN members and early career professionals a valuable insight into different specialisms within the nuclear industry.
The day featured an array of talks covering topics on radiation safety assessment, safety case procedure, shielding and criticality, and the Cerberus Nuclear team were involved throughout the day! Tom, a Cerberus Nuclear director, started the day with an introduction to our company history and capability. Daniel gave a lecture on what a criticality is, covering the underlying physics and the factors affecting criticality. Sarah and Zac gave an overview of interesting applications of both criticality and shielding that Cerberus has been involved in. This showcased our virtual reality criticality training tool CARTA, our recent Game Changers project for Sellafield Ltd in collaboration with Jacobs, development work in shielding for fusion reactors and previous shielding verification work.
The day concluded with a Q&A panel, with Sarah and Tom helping the panellists to provide insight and advice on careers in criticality, shielding and safety cases. There was plenty of opportunity for discussions with delegates, who all had very thoughtful and inquisitive questions and we also had some exciting networking conversations with the other speakers, so expect upcoming collaborations and future events!
Thank you to Ellie Ford and the NI YGN for organising a successful event!
Cerberus Nuclear joins University of Birmingham Nuclear Masters Steering Committee
A steering committee meeting was held yesterday (19th June), and Katrina Christaki and Daniel Rutland were delighted to take part! The meeting was attended by a number of industry leaders. The purpose of the steering committee was to discuss key issues, including the course content, opportunities for students, and the continual need from across the nuclear industry for skills taught on both courses, such as criticality and shielding.
Cerberus Nuclear has enjoyed a successful relationship with the university, taking on students for summer placements and in graduate roles in previous years. We look forward to becoming more involved with the courses as part of the steering committee.
We would like to thank Paul Norman for inviting us to be involved in the steering committee, and for organising an interesting and thought provoking day!
Cerberus Nuclear attends Early Career Criticality Safety Network launch
Haleema, Tu, and Andrew recently represented Cerberus Nuclear on a two-day event for the launch of the Early Career Criticality Safety Network (ECSN), which included two site visits to the Low Level Waste Repository (LLWR) and Sellafield.
The first day began with a presentation on the history of LLWR, as well as its place and future in the modern nuclear industry. This was then followed by a tour of the site, guiding us through the waste repository system.
The tour was followed in the afternoon by the launch event for ECSN, beginning with a talk on criticality safety delivered by an expert from Sellafield. This was followed by presentations from the ECSN committee members on the current goals for the ECSN, ranging from a dedicated webpage under the Working Party on Criticality (WPC) and social media accounts, to outreach to schools and universities to develop outside awareness of criticality. This was then broken up into smaller discussions across the room, which was an excellent opportunity for networking and meeting new people also early in their careers.
The second day comprised of a tour of the Sellafield site, including a more in depth look at the THORP building, and the process that would have taken place during reprocessing.
Our thanks extend to the ECSN & WPC for organising this launch event and implementing the idea of an early careers network. We would also like to extend thanks to the members of Sellafield, NWS, and LLWR that organised for us to go on two excellent site tours as part of the launch event.
