Why do refineries ban mechanical diggers?
Brownfield ground inside a refinery is crowded. Decades of pipelines, cables, drains, and firewater lines run under almost every corridor, and the drawings are rarely complete. One bucket strike on a live line can stop a whole unit, and damaged pipelines and cables cost millions. That is why most plant operators ban mechanical diggers near live assets and push crews back to hand shovels - slow, hard work that puts many extra people inside your gates.
Suction excavation closes that gap. Our machines loosen the ground with controlled airflow and pull the spoil in - dry, with no water and no slurry. One machine with one operator replaces 100-150 men with shovels. That also means fewer gate passes, inductions, and safety trainings for your permit office to process.
How does the work fit a turnaround window?
Turnarounds are planned to the hour, and excavation is often on the critical path. We plan the dig before the shutdown starts, so the machine works while your other trades work. Project-based mobilization - send us your timeline.
- Before the shutdown: you send scope, dig locations, and dates; we confirm availability and provide the machine and operator documents your HSE team needs
- Gate and permits: one machine and one operator means a short prequalification list instead of paperwork for a full digging crew
- Each shift: toolbox talk, permit sign-off, and gas test before the first cut
- Excavation: the operator guides the suction arm by radio remote control from a safe position outside the pit
- Handback: spoil is removed dry, the excavation is clean, and the permit can be closed
| Permit concern | How the machine answers it |
|---|---|
| Sparks near hydrocarbons | Earthing system and spark arrestor - no steel bucket striking stone |
| Gas release while digging | Gas warning system with two sensors shuts the machine down automatically |
| Headcount inside the unit | One operator with a radio remote control instead of a full digging crew |
| Damage to buried lines | Air loosens the soil, so live pipes and cables are uncovered, not hit |
| Wet spoil and slurry | Dry suction only - no water added, no extra volume to dispose of |
Which excavation jobs come up inside a live plant?
- Exposing live pipelines and flange connections for inspection or tie-ins - see our pipeline exposure service
- Removing contaminated soil after a leak - dry and controlled
- Clearing soil around damaged cables or pipe supports during an unplanned shutdown - our emergency excavation team is reachable 24/7 via WhatsApp
- Opening pits for foundation or support repairs in areas where no excavator is allowed to enter
When is suction excavation not the right method?
Honesty helps your planning. For large bulk earthworks on open ground with no buried services, a normal digger is cheaper. Solid rock must be broken before we can remove it, and single pieces above 250 mm - larger than a standard brick - or heavier than about 35 kg - more than one worker can safely lift alone - have to be lifted out separately. For any dig close to live process lines, suction is usually the safer choice.
Is the machine certified for high-hazard areas?
Our machines carry Zone 2 and refinery-grade certification. Full technical detail on these systems and on operator safety is on our safety and HSE page.