Scabbler technology moves beyond Game Changers to huge success in the nuclear industry

Appleby-based engineering company Barrnon Ltd has been awarded a significant contract extension with Nuclear Restoration Services (NRS) Dounreay for the ongoing use of its Scabbler contaminated-concrete removal device. Funded by the Game Changers innovation programme, existing Barrnon technology was adapted for use on nuclear sites and is set to have a tremendous impact on demolition and decommissioning in the industry.

The Scabbler was designed to tackle the complex challenge of safely removing contaminated concrete from nuclear facilities. The original Game Changers initiative sought solutions for decommissioning concrete structures in highly contaminated areas, particularly ponds at sites such as Sellafield and Dounreay. Both locations have several ponds where concrete walls and floors need to be remediated before full decommissioning and demolition can occur.

Barrnon applied for and secured Game Changers funding to conduct a feasibility study, followed by a successful proof of concept (PoC) project. The technology advanced beyond Game Changers to secure further funding from the Nuclear Decommissioning Authority (NDA). Now, Barrnon's Scabbler is due to be actively deployed at Dounreay, with funding for onsite demonstrations provided by the nuclear site.

Utilising Barrnon’s proprietary Rotocutter technology, the Scabbler has been adapted for the UK nuclear industry and the removal of concrete, focusing on safety and dust suppression, areas where traditional concrete-removal methods have fallen short. The Scabbler is a remotely-operated, hydraulically-powered device that not only removes compacted sediment and hardened concrete but also incorporates a unique dust suppression and collection system to prevent hazardous particles from becoming airborne.

The Scabbler’s modular design allows for minimal operator interaction, with all sub-assemblies being easily replaceable and repairable, significantly reducing downtime. The machine can be remotely driven into position, lifted by crane into restricted areas, such as dry fuel storage ponds, or assembled on-site depending on project needs. The device features a vacuum system that collects waste directly from the removal head to a containment barrel of the client's choosing, ensuring the safe handling of hazardous materials.

"The Game Changers programme helped launch an important challenge with the right support in place to keep the project moving forward," said George Sewell, Chief Technology Officer at Barrnon Ltd. "It enabled us to build a strong relationship with the brilliant team at Dounreay, and we’re excited to see the ongoing development of the Scabbler and its potential applications across the NDA and beyond."

The latest contract extension highlights the importance and scope of Barrnon's contributions to nuclear decommissioning, with potential future applications in other industries where airborne particles pose significant risks. This is another fantastic example of solutions and companies moving beyond Game Changers and finding success in the nuclear industry.