Tunnel Boring Machine Operator

As a Tunnel Boring Machine (TBM) Operator you control and monitor large, specialised tunnelling machines used to bore through rock and soil on major underground infrastructure projects. You regulate the torque of the rotating cutting wheel and screw conveyor, adjusting settings through a computerised console to maintain tunnel stability and minimise ground movement. You also use remote controls to install reinforced concrete tunnel-lining segments as the machine advances, and you work closely with civil engineering teams, ground engineers, and safety officers throughout the process. Preventing accidental damage to existing underground utility infrastructure is a critical part of your daily responsibilities, as is carrying out routine mechanical checks and responding swiftly to unexpected events underground.

There is no single mandatory academic route to becoming a TBM Operator in Ireland; most operators enter through relevant experience in civil engineering groundworks, heavy plant operation, or underground construction trades. A QQI Level 5 or Level 6 award in Construction Studies or Plant Operations, available through PLC courses at Colleges of Further Education or through ETB training programmes, provides a strong foundation. Some operators complete a SOLAS-registered apprenticeship or heavy plant operator training, and progress into TBM work through experience on major tunnelling projects. Leaving Certificate subjects such as Construction Studies, Engineering, Mathematics, and Physics are useful for understanding mechanical and structural principles on site. Specialist TBM training is typically delivered by the equipment manufacturer (such as Herrenknecht or Robbins) on the job, often combined with Safe Pass, Manual Handling, and Confined Space Entry certification. Operators working on Irish metro or utility tunnelling schemes may also be required to hold CPCS (Construction Plant Competence Scheme) or equivalent plant operator tickets recognised in Ireland.