Sellafield Ltd stores fuel-bearing radioactive waste in Self Shielded Boxes (SSBs), which may require safe interim storage for several decades. SSBs have filters that enable gas exchange while containing radioactive particles.

This challenge aims to identify an in-situ solution to measure or monitor filter integrity, ideally without removing filters from the SSBs. A successful solution could reduce the need to move SSBs, replace filters unnecessarily or break containment, while improving understanding of filter performance. This could deliver significant safety, cost and time savings and increase regulatory and stakeholder confidence.

Find out more

Full details of this challenge are available on the Game Changers website. An interactive webinar will take place at 10am (GMT+1) on Tuesday 13th October 2026 where delegates will have the chance to hear directly from the challenge owners and ask any questions. Register for free via the link below. Register for the webinar.