tracked dumper test

48問 • 1年前

問題一覧

Give one advantage And two dis advantages of a rear mounted camera

allows operator to see directly behind machine camera has limited view the view can be blinded by sun light

Give TWO reasons why the dump truck operator should have an understanding of the type of spoil being transported

1. It can affect the way it is being transported, e.g. fluid or semi-fluid material 2. It can overload the tyres is the material is dense 3. The load can stick to the body when tipping 4. It may get spilled during transportation 5. It may need to be tipped at a different location

a) State the purpose of a retarder and b) The possible consequences of not using it when required

a) the retarder is a device that provides a partial braking effect on steep slopes b) if it is not used then normal brakes have to be used which can cause to lose grip on steep slopes leading to loss of control

Whenever possible, who should decide the positioning of the dump truck for loading?

The excavator/loading shovel operator

The function or job role of a dump truck operator, when transporting loads is to?

Transport the load safely and efficiently to and from areas

Before leaving the cab for a rest break, after parking and switching off the machine, what final action must be carried out?

Machine must be isolated, windows closed, door closed and locked

Why should the tail gates not be fitted when transporting bulky or rock type material?

The material could jam when being tipped, causing possible instability

Why should a dump truck be re-fuelled at the end of the day?

The machine should be refuelled at end of the day to prevent condensation building up in the tank as its cooling down

What effect does travelling on wet clay have on the dump truck?

The grip is reduced which may cause loss of control

Operators should lower the body fully before driving away. Give TWO possible consequences if this is not carried out

1. The machine could tip over sideways especially if on uneven ground 2. The raided body could hit overhead obstacles

When working in a confined area or space, name THREE hazards that can occur.

1. Fumes 2. Noise 3. Limited Visibility 4. Proximity hazards 5. Excessive Manoeuvring

Many dump trucks have a turbo charged engine a) what is the normal procedure before switching off the engine after working and b) what happens if the procedure is not followed

a) leave the engine running for a couple of minutes before switching off b)shortens the life of the turbo

Who should determine the maximum load that should be placed into the body of the dump truck?

The dump truck operator

The operator has to use a new type of dump truck that they are unfamiliar with. What do Regulations (ie PUWER 98) and other guidance require the operator to have?

The operator is required to have the correct instruction, training and up to date information on that particular machine

f a load has to be tipped on a slope, what may happen if the load is tipped downhill and why?

Weight transfer can cause the machine to tip rearwards due to the movement of the centre of gravity

What is regarded as the most productive position for the dump truck to be in when being loaded by a wheeled loading shovel form the stockpile?

The most productive what to load a dump truck is to position the dump truck at a 50-60 degree angle to the heap and create a Y shape for the shovel.

a) What determines the minimum distances that any part of the plant and machinery has to be kept from overhead electricity lines and b) Explain why a distance should be kept

a) The amount of voltage that runs through the electricity lines and the support used for the electricity lines (wooden poles or metal poles) b) Because the electricity can arch or jump

a) why should the body of the dump truck be raised slowly/carefully especially with wet or sticky material and b) what would be a consequence if this was not done?

a) Material could jam b) Rear chassis/body (and possibly the cab) could tip sideways or rearwards

What problems and hazards can soft ground cause to a loaded dump truck?

1. Slows the speed of the truck 2. Makes it difficult to drive through 3. The machine can sink and get stuck 4. The machine can tip over sideways

What is a possible consequence of using a tyre with a deep cut in the sidewall?

Debris and sharp objects can enter in the cut causing the tyre to puncture.

If fitted, name the purpose of having independent front suspension?

Allows for maximum ground contact and shock absorbtion

Why must the seat belt be worn at all times, even with the cab door closed?

Wearing the seat belt will keep the operator stable in the seat in the eventuality of a rollover

If setting up to work in a pedestrianised area, state THREE factors that need to be taken into account

1. Safe route for pedestrians with appropriate signage should be provided 2. Make sure there is enough room for materials and machine movements 3. Noise, dust and fumes should be kept to a minimum 4. Method statement and Risk assessments are in place.

When parking the machine at the end of the shift, name THREE places where the dump truck should NOT be parked

1. Do not park in front of the entrances or exits 2. Do not park on soft ground 3. Do not park on pedestrian routes 4. Do not park on slopes 5. Do not park close to trenches or stockpiles

What is the purpose or a rops cab

The purpose of a ROPS is to provide protection if the machine rolls over

When parking the machine at the end of the shift, name THREE places where the dump truck should NOT be parked

1. Do not park in front of the entrances or exits 2. Do not park on soft ground 3. Do not park on pedestrian routes 4. Do not park on slopes 5. do not park close to trenches or stockpiles

In what situation does a hard hat NOT need to be worn when operating a dump truck?

When the operator is on an enclosed structure that meets the FOPS regulations

During work, the engine starts to overheat. Explain the danger if someone tries to remove the radiator or expansion tank cap

Removing the radiator tank cap will cause the hot liquid inside to be released under pressure and could course burns.

If checking the oil level with a dip stick, why must gloves be worn?

Gloves must be worn to avoid oil contact with the skin which can cause skin problems

If the operator has to top up the hydraulic oil, state TWO precautions to ensure cleanliness of the system.

1. Clean the filler cap and the area surrounding before 2. Use only clean transfer equipment

The operator is asked to tip material into a new trench. State FIVE different requirements that must consider or implemented before tipping commences.

1. Trench collapse/shoring requirement 2. Check for surrounding hazards 3. Authorisation to tip/ Permit to work 4. Check if all personnel have cleared the trench 5. Check the ground support 6.Check the ground support 7. Consider using a physical stop to prevent reversing into the trench

When would the body safety strut or support be used?

At all times when carrying any works under a raised skip

If the operator has loaded the machine onto a transporter/trailer on behalf of a driver, state THREE actions that must be carried out before they leave the machine

1. The machine and components are left in the agreed position 2. Chassis centralised ( engage articulation bar) 3. Skip lowered and pressure removed

a) What is the minimum distance allowed near open trenches when travelling with a dump truck b) explain why

a) Greater that the trench depth b) Getting too close to a trench can cause it to collapse

The operator has been asked to drive the machine onto a transporter/trailer a) Who is responsible for the loading operations and b) State FOUR actions to be considered by the operator before loading commences?

a) The transporter driver is responsible for the loading operation b) 1. A level area with sufficient room to manoeuvre should be selected 2. Check for overhead obstructions 3. The machine should be clean 4. The transporter should be suitable and in good condition 5. The ramps should be adjusted to fit the machine 6. The Operators Manual should be consulted to find the loading procedure 7. The area should be clear of people and other plant

Give THREE possible reasons why dump trucks should not stray off the designated haul routes.

1. Can damage underground services 2. Can ruin ground that has been prepared for works 3.Cam get stuck because of the soil 4. May stray into routes designated for other plant 5 may increase journey times between loading and discharge points

a) name THREE purposes of the raised lugs on tyres and b) What can happen to a dump truck if the lugs are severely worn?

a) 1. Providing help when braking 2. Providing adherence in soft ground 3. Assisting when steering b) Worn or bald tyres can cause skidding or sliding making steering more difficult and the tyre more vulnerable to punctures

On start up, the air pressure on the machine is low. What actions must the operator carry out before work and during work?

Ensure the air pressure is full before work and check pressure constantly during the work

A dump truck is classified by a manufacturer as a 60-tonne machine. What does this mean?

This is the maximum carrying capacity of the dump truck

The centre of gravity of the machine changes when you are tipping a load. a) How does this affect the dump truck and b) State TWO actions to avoid accidents

a) Weight is transferred both further to rear to the rear and higher b) Tip slowly and on level ground (where possible

An operator has been asked to transport materials form one site to another using the public highway, for which the Road Traffic Act applies. What effect can this have on this activity?

The operation becomes a carriage of goods operation for which the dump truck becomes LGV and it has to have appropriate taxing, registration and licencing apart from all the other things that need to be in place so the machine is road legal (mirrors, lights, clean tyres, brakes…)

Why do most dump trucks have a sloping body tail?

The sloping body tail ensures the weight of the load is distributed more to the centre of the machine preventing the risk of the machine tipping backwards

Give TWO examples where the work at Height regulations may apply to dump trucks

1.Access/Egress to the cab 2. Access/Egress to the engine compartment 3. Access to the body 4. Body maintenance

Name THREE conditions that mirrors on the machine must be in?

1. Must be fitted 2. Must be clean 3. Must be adjusted 4. Must not be damaged

State TWO requirements of using a stop block or earth bank (Berm) at a trench discharging point

1. To indicate the stopping point 2. To prevent the machine overrunning into the trench

Question re: OPERATING MANUAL, now part of the practical tests Using the operators manual, state the cold starting procedure for the machine. Note the operators manual for the machine being used must be available for reference by the candidate Find the cold start procedure in the index, go to the page and read the paragraph that describes the cold start procedure (page number must be read as well) Where should the dump trucks operators manual be kept and why

The operators manual should be kept inside the machine where the operator has easy access.

Using the Operators Manual, state the figure for tyres’ operating pressure. Note the Operators Manual for the machine being used for the test MUST be available for reference by the candidate

The Operators Manual will be provided by the test centre and you will have a look at the index and find the tyres chapter, go there and read the figure for the tyre pressure. ( The page number must be read as well)

Apart from the operator, who else may need to use the machines Operators

Maintenance staff, supervisors and transporter drive

tractor test

ユーザ名非公開 · 44問 · 1年前

tractor test

44問 • 1年前

ユーザ名非公開