Site Dumper Operation and Plant-Specific Competence
Site dumper operation and plant-specific competence tests the practical knowledge needed to operate a forward-tipping or similar site dumper safely: pre-use checks, stability, travel, tipping, parking and communication with pedestrians and other plant.
Core rules
- Complete pre-use checks: tyres/wheels, brakes including parking brake, steering, horn, lights, seat belt, ROPS (FOPS where fitted), body/tipping rams, fluid leaks, and load plate. Under PUWER, equipment must be suitable, maintained and inspected; record defects and do not use a defective machine.
- Never exceed the manufacturer's rated payload. Load evenly, keep the body lowered when travelling, and never carry passengers.
- On gradients, travel straight up or down where the machine permits, with the heavier end uphill; avoid turning across a slope. Keep away from excavation edges, soft ground and trenches.
- Use designated routes; sound the horn at blind corners; maintain safe distances from excavators (outside the slewing radius) and keep pedestrians separated. Use a trained signaller/banksman when visibility is restricted.
- Tip only on level, firm ground after checking the edge and overhead lines. Park on level ground with body down, parking brake on, controls neutral and key removed.
Worked example
A dumper is loaded with wet clay and must tip near a trench. The operator should reject an uneven load, keep the body down, travel by the designated route, stop short of the trench edge, and use a banksman to confirm the edge and no workers below. Tipping with the body raised while moving, or on soft ground near the edge, shifts the centre of gravity and can overturn the machine.
Traps
Do not assume a seat belt is unnecessary on a slow dumper; ROPS only protects if you stay inside. Do not use the body as a work platform. Do not tip into an excavation without checking for people, services and overhead lines.