Jacob is a Radiation Shielding and Criticality consultant with experience in various areas including fusion, whole site dose assessments and criticality assessments. Jacob has been working with the team at Cerberus on shielding calculations for LLWR, the UKAEA STEP Reactor and on R&D Projects. He has experience in using MCNP and PHITS for these calculations. He is also involved in the shielding verification of a hospital facility. He is proficient in use of MCNP for radiation shielding calculations as well as criticality safety.
Jacob’s contribution to the UKAEA STEP project involved a detailed material assessment and assisting in the development of a complex spherical tokamak CSG model and neutron source for use in MCNP. He conducted a range of shielding calculations throughout the project using both MCNP and PHITS. Jacob developed a tool for LLWR to determine the dose rate for relevant dose locations depending on the specified maximum dose limit of a single location. He has completed multiple package design assessments including updating a tool that determined the low distance dose rates depending on the waste, shielding and waste loading detailed. Jacob supported a criticality assessment of a vitrified waste package for the HAW-TT project that involved conducting the scoping calculations to obtain the safe and critical masses. He performed a sensitivity analysis that involved developing and optimising parameterised MCNP inputs with regard to the reactivity from the specified waste package.
Katrina is a Criticality Assessor with over three years of experience in the nuclear industry. She has worked on a range of projects, from new build to decommissioning for clients including AWE, UUK, UNS and NWS. Katrina’s experience includes authoring HAZANs and PSR documents, chairing optioneering studies, attending HAZIDs as a criticality specialist and attending HAZOPs as secretary. She is skilled in the use of criticality codes for calculations, with particular experience in using MONK, MCNP, and the MCNP validation tool Whisper, on client projects. Katrina also attended the Los Alamos Criticality Calculations Training Course for MCNP. She has also worked as part of integrated project safety teams providing criticality support and criticality safety assessment. As part of the team, she has also been involved in fault analysis, collaboratively working with key stakeholders.
Alongside her consultancy roles, Katrina has been elected as the current secretary for the Working Party on Criticality (WPC) and takes an active role in supporting by producing meeting agendas and minutes and managing WPC papers. She has also been involved in in-house development work, including Cerberus Nuclear’s criticality safety VR training aid, CARTA, and has played an active role in running graduate training sessions and student project supervision. Katrina holds SC security clearance.
Sam has over four years of experience at Cerberus Nuclear as a nuclear safety consultant specialising in radiation shielding and visualisation of dose information. He has completed various shielding assessments in areas such as bulk shielding, detailed design, radioactive transport, beamline target activation, target source term generation, burnup source term generation and shielding optimisation. He is an advanced user of Monte Carlo codes, including MCNP, PHITS, OpenMC and SCALE.
Sam is also part of the Cerberus Nuclear data visualisation design team and has developed unique methods for displaying highly complex radiation field data in VR, also allowing physical object interaction within the immersive environment. In addition to the above, Sam has produced MSc approved dissertation projects and provided mentorship to our NTEC placement students on criticality safety anomalies for the second year running.
