Forward Tipping Dumper Test CPCS Test
Questions AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED
ANSWERS)
Why are plant operators generally regarded as 'safety-critical' workers? - CORRECT ANSWER-
There actions could have significant health and safety consequenses on themselves and others.
Name three problems that could occur if the skip is overloaded with a dense/compacted
material. - CORRECT ANSWER-1: Axels become overloaded.
2: Skip unable to skip.
3: Machine tips forward.
Discharging loads whilst moving is not considered best practice. Why would this be? - CORRECT
ANSWER-Instability could occur on uneven ground.
When travelling on wet clay, what effect does this have on the dumper? - CORRECT ANSWER-
Tyre grip is reduced, which may cause loss of control.
Before leaving the dunper for a rest break, after parking and switching off the engine.
a) What final action must be carried out.
b) And why? - CORRECT ANSWER-a) Key removed and door locked
b) To prevent unauthorised people from operating the machine.
When working in a confined area or space, name three hazards that can occur. - CORRECT
ANSWER-Noise, Dust, Fumes
, What problems and hazards can soft ground cause to a loaded dumper? - CORRECT ANSWER-
Stunk and stuck machine.
How can a qualification or card benefit a plant operator? - CORRECT ANSWER-Credibility and
proof of skill.
Manufacturers must give recommendations on how to travel a dumper up and down inclines. If
this information is not known first hand, what is the general rule about travelling up and down
slopes? - CORRECT ANSWER-The heaviest part of the machine is kept uphill.
The function or job role of a dumper driver, when transporting materials is to? - CORRECT
ANSWER-Transport then efficiently and safely.
Apart from the operator, who else may need to use the machine's operator's manual? -
CORRECT ANSWER-Maintenance staff, supervisors and transporter drivers.
State two requirements of using a stop block or earth bank (berm) at a trench discharging point.
- CORRECT ANSWER-To indicate a stopping point and to stop you driving into a trench.
On articulated dumpers, steering is achieved by actuating a hydraulic ram which is controlled by
turning the steering wheel.
a) How does the engine supply the oil flow and.
b) What happens to the steering when the engine stops? - CORRECT ANSWER-a) Via an engine
driven pump.
b) There is no steering.
Give four reasons that may cause the dumper to tip over sideways during travel. - CORRECT
ANSWER-1: Deep potholes.
Questions AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED
ANSWERS)
Why are plant operators generally regarded as 'safety-critical' workers? - CORRECT ANSWER-
There actions could have significant health and safety consequenses on themselves and others.
Name three problems that could occur if the skip is overloaded with a dense/compacted
material. - CORRECT ANSWER-1: Axels become overloaded.
2: Skip unable to skip.
3: Machine tips forward.
Discharging loads whilst moving is not considered best practice. Why would this be? - CORRECT
ANSWER-Instability could occur on uneven ground.
When travelling on wet clay, what effect does this have on the dumper? - CORRECT ANSWER-
Tyre grip is reduced, which may cause loss of control.
Before leaving the dunper for a rest break, after parking and switching off the engine.
a) What final action must be carried out.
b) And why? - CORRECT ANSWER-a) Key removed and door locked
b) To prevent unauthorised people from operating the machine.
When working in a confined area or space, name three hazards that can occur. - CORRECT
ANSWER-Noise, Dust, Fumes
, What problems and hazards can soft ground cause to a loaded dumper? - CORRECT ANSWER-
Stunk and stuck machine.
How can a qualification or card benefit a plant operator? - CORRECT ANSWER-Credibility and
proof of skill.
Manufacturers must give recommendations on how to travel a dumper up and down inclines. If
this information is not known first hand, what is the general rule about travelling up and down
slopes? - CORRECT ANSWER-The heaviest part of the machine is kept uphill.
The function or job role of a dumper driver, when transporting materials is to? - CORRECT
ANSWER-Transport then efficiently and safely.
Apart from the operator, who else may need to use the machine's operator's manual? -
CORRECT ANSWER-Maintenance staff, supervisors and transporter drivers.
State two requirements of using a stop block or earth bank (berm) at a trench discharging point.
- CORRECT ANSWER-To indicate a stopping point and to stop you driving into a trench.
On articulated dumpers, steering is achieved by actuating a hydraulic ram which is controlled by
turning the steering wheel.
a) How does the engine supply the oil flow and.
b) What happens to the steering when the engine stops? - CORRECT ANSWER-a) Via an engine
driven pump.
b) There is no steering.
Give four reasons that may cause the dumper to tip over sideways during travel. - CORRECT
ANSWER-1: Deep potholes.
