Game Changers launches proof-of-concept project for pipe inspection technology

Game Changers is funding a proof-of-concept (PoC) project to further develop an inflatable self-growing snake robot designed to inspect long, narrow and complex pipework at Sellafield. The technology, developed by the University of Nottingham in collaboration with Ice9 Robotics, is addressing the Game Changers challenge focused on the internal inspection of long and narrow pipework – one of the most technically demanding inspection challenges across the Sellafield site. 

Addressing a Major Inspection Challenge 

The challenge seeks a solution capable of delivering live HD colour video across more than 40 metres of pipework with an internal diameter of just 20mm, while navigating bends, protruding welds, grit, sand and corrosion debris. One key application is the inspection of an overflow drain line servicing the Sellafield Sealines, which must be visually inspected every 2 years to monitor condition and identify any signs of damage or blockage. 

The pipeline is expected to remain operational for at least the next 40 years, creating an ongoing need for reliable inspection technology capable of working in highly constrained environments where traditional approaches have struggled. 

From Feasibility Study to Proof of Concept 

Following a successful 12-week feasibility study completed in December 2025, funding has now been approved for a 7-month PoC project, beginning in March 2026. 

The challenge owners selected the project after being impressed by the rapid progress demonstrated during the feasibility phase. The Nottingham and Ice9 teams successfully proved the concept in laboratory conditions, showcasing a highly novel approach that differs significantly from conventional inspection technologies previously trialled for this application. 

Developing a Self-Growing Snake Robot 

The proposed solution combines a pneumatically growing inflatable body with a highly flexible camera system, creating a self-growing snake robot capable of navigating extremely restricted environments. Unlike conventional borescopes or rigid segmented manipulators, the robot grows through the pipework as it inflates, reducing friction and allowing it to negotiate complex bends and obstacles with minimal force. 

Early prototype systems using commercial off-the-shelf materials have already demonstrated up to 20 metres of extension in free space and 10 metres of deployment inside pipework. Building on a previous snake robot design originally developed for NRS Dounreay, the latest version has been adapted to provide significantly greater length and flexibility for Sellafield’s inspection requirements. 

The new PoC phase will focus on further developing the technology for operational deployment. This includes testing more robust materials for the inflatable robot body, demonstrating reliable inflation and deployment over much longer distances, and validating the quality of live video and captured inspection imagery. The ambition is to develop a system capable of inspecting up to 60 metres of pipework. 

Collaboration Supporting Nuclear Innovation 

The collaboration between the university and Ice9 Robotics brings together expertise in soft robotics, advanced inspection systems and nuclear applications, supporting the development of a potentially transformative inspection capability for the nuclear sector. 

PhD researcher Dr Jung-Che Chang commented: “The University of Nottingham has more than 10 years’ experience in developing slender robotic solutions for in-situ inspection and intervention. The Game Changers project presents exciting challenges and will help increase the impact of our robots in more extreme environments.” 

Matthew Nancekievill, CEO of Ice9 Robotics, added: “With a large number of applications for this innovative technology, it is a really exciting project for Ice9 Robotics to be a part of and we are enjoying the Game Changers process.” 

Challenge owners have responded positively to the novel approach, particularly because previous technologies trialled for similar inspection tasks have not delivered the required performance in such difficult environments. 

Benefits for Sellafield and the Wider Industry 

If successful, the technology could provide significant benefits not only for Sellafield, but for the wider nuclear industry. The ability to inspect difficult-to-access pipework more effectively could improve asset management, reduce operational risk and support safer long-term operation and decommissioning activities across nuclear sites. 

Challenge owners also believe the platform could have wider applications across Sellafield for inspecting other narrow and complex pipe systems where current systems have limitations. 

Next Steps 

The PoC project will continue throughout 2026, with the longer-term aim of supporting future inspections and progressing toward a deployable operational solution for Sellafield’s 2027 inspection requirements.