We recently supported NNL with delivery of their UK Nuclear Criticality Safety Course. This is a long established training course in the UK and is supported by the University of New Mexico. Guest speakers from Sellafield Limited and ONR also contribute to the course.

Representatives from NNL have been key stakeholders in the development of CARTA, our criticality training application, via an Alpha Resilience and Capability (ARC) funded programme of work. Integration of CARTA into their criticality training course has been a key milestone for this programme of work and we were pleased to deliver this novel project on time.

At the criticality training course, we were delighted to see our ‘MAGIC MERV simulation’ being put into good effect in presentations regarding the factors that affect criticality. The ‘glovebox process simulation’ provided an interesting and lively group activity with the course instructors creating a series of challenging scenarios for the class to tackle. You can read more about the training simulations here.

In addition, Sam and Stewart were on hand to demonstrate the simulations in a Virtual Reality (VR) environment (both during the course and in the bar at the end of the day).

We would like to extend our thanks to NNL for their support in the development of this phase of the CARTA project and for hosting us on the course.

CARTA is criticality safety training software developed here at Cerberus Nuclear. Uniquely, CARTA displays a realistic value of k-effective as the user interacts with the simulation, either in a conventional first-person desktop format or Virtual Reality (VR) environment. The user can see, in real-time, the effect that their actions have on criticality safety. The CARTA methodology requires a multi-disciplinary approach, combining criticality safety calculations, machine learning and a gaming environment.

We have recently completed the software development for two training scenarios. This programme of work has been funded by the UK’s Alpha Resilience and Capability (ARC) programme.

The project has involved engagement with representatives from many of the ARC member organisations. This has given relevant stakeholders the opportunity to influence the functionality and appearance of CARTA as a training tool, prior to integration into training programmes within their own organisations. Two training simulations have been created:

• The ‘MAGIC MERV’ simulation – Users can interact with two spheres of fissile material in a laboratory environment. The simulation is able to demonstrate the behaviour of all of the factors that affect criticality, i.e.
  • Mass
  • Absorption
  • Geometry
  • Interaction
  • Concentration
  • Moderation
  • Enrichment
  • Reflection
  • Volume

This simulation is intended to be conceptual rather than realistic. It allows the maximum range of effects to be demonstrated, making it useful for training operators and assessors and also for wider stakeholder engagement.

• The glove box process simulation – Users interact with a realistic glove box featuring a mass balance, assay chamber and array of stored cans containing fissile material. They are presented with an imported can and are able to weigh and assay the can in order to determine if it is ‘safe’ before storing it or rejecting it. The simulation allows trainees to be challenged with various configurations to enhance their understanding of criticality rules, potential fault scenarios and some of the challenges with fissile material assay.

Images of CARTA development. From concept through to the final product.

We are now looking at options for implementation at each of the various ARC member organisations including Sellafield Limited, AWE, NNL, Nuclear Waste Services, ONR and DSRL. If you work for any of these organisations and would like access to CARTA, then please get in touch (nuclear@cerberusnuclear.com).

We are now actively seeking organisations that would benefit from this particular software or bespoke criticality safety training scenarios using the CARTA methodology. If you would like to discuss your idea, please get in touch using nuclear@cerberusnuclear.com.

Cerberus Nuclear is a hub for innovation in criticality safety and radiation shielding and we are pleased to announce that we have made a successful application for funding from the UK’s Alpha Resilience and Capability (ARC) programme. ARC was created by BEIS (Department for Business, Energy & Industrial Strategy) to ensure that the UK retains its world-leading alpha capabilities: from operations and maintenance, to high-end R&D and design. This cross-industry consortium includes the National Nuclear Laboratory, Sellafield Limited, AWE and ONR.

Over the last two years Cerberus Nuclear has developed CARTA, a concept for criticality safety VR (Virtual Reality) training software, which we successfully presented at ICNC2019. Uniquely, CARTA uses a machine learning algorithm to predict k-effective 'on the fly' for a given system, such as an alpha facility glovebox. When coupled to a VR headset, CARTA gives users an immersive experience of the facility environment and the effect of their actions on the system’s reactivity.

The ARC funding will support the next phase of development, to refine the concept into a software package for members of the ARC consortium to use. CARTA will deliver tangible benefits directly to operators on plant, criticality safety specialists and other stakeholders in criticality safety. The software package will use a variety of scenarios in desktop and VR environments, to provide intuitive user interfaces. The underpinning data will be based on accurate modelling of the neutron physics, providing a realistic environment for trainees to improve their understanding of the complexities associated with criticality safety.

The specifics of the training scenarios will be guided by a Technical Steering Committee, comprising stakeholders from the various ARC member organisations. This will ensure that the training scenarios are relevant and can be effectively integrated into their existing training programmes.

We are now actively seeking organisations that would benefit from bespoke criticality safety training scenarios. If you would like to discuss your idea, please get in touch using nuclear@cerberusnuclear.com.