Questions Flashcards
What is the definition of a hazard?
A thing or a situation that has the potential to cause harm.
What is the definition of a risk?
The likelihood of harm when exposed to a hazard.
What does your duty of care as a HRWL holder involve?
- The health and safety of yourself.
- The health and safety of others due to your actions.
What sorts of penalties can workplace health & safety impose upon a license holder that has been working unsafely?
- Suspend Licence
- Cancel Licence
Name three resources that you can obtain workplace safety information and requirements from.
- Safe work method statements (SWMS)
- Australian Standards
- Codes of Practice
List three measures your employer should take to ensure the health and safety of their workers.
- Training
- Adequate facilities
- Safe work Environment
Once you have your HRWL, what are two things your employer is responsible for when providing you with machinery that you are unfamiliar with?
- Training
- Supervision
List the three (3) extra tasks an advanced scaffolder can do when erecting scaffold that are in addition to the tasks a basic or intermediate scaffolder can legally carry out.
- Hung scaffold
- Suspended scaffold
- Cantilevered scaffold
In QLD, what are the minimum safe distances you should observe if you are an untrained or unauthorised person working near uninsulated powerlines?
Up to 132kv: 3m
132kv to 220kv: 4.5m
220kv to 275kv: 5m
275kv and above: 6m
List two (2) things that you need to do before you can work closer than the minimum safe distances for power lines.
- Permit
- Insulation
- Trained spotter
What visual systems can be used to identify the presence of overhead powerlines in the worksite? List at least two (2).
- Tiger-tails
- Safety warning signs
When erecting hung scaffolds, suspended scaffold and cantilevered hoists what hazards do you need to consider? List three (3).
- Falling from heights
- Falling objects
- Hazardous manual tasks
List three (3) risk controls that you can employ to reduce the risk of falling from height where it is not possible to remove the risk of falls.
- Install temporary platforms
- Edge protection
- Fall arrest system
When should hazard controls be applied?
Before you start work and as soon as hazards arise
When planning your advanced scaffolding work what are five (5) items you need to consider excluding site hazards?
- Plans
- Loadings on scaffold
- Availability of equipment
- New risk assessment
- SWMS
List two (2) reasons why any surplus material should be removed from the work area as soon as it is feasible to do so.
- To prevent the risk of slips and trips
- To prevent the risk of materials falling
When erecting hung scaffold what are three (3) kinds of standards that can be used?
- Scaffolding tubes in single length
- 6 × 24 FSWR slings with a nominal diameter of not less than 11mm.
- Grade T chains with a nominal diameter of not less than 8mm
What location should the check couplers be positioned for hung standards when utilising scaffolding tubes?
Directly above the suspension points and directly below the lowest ledgers.
When a hung scaffold is being erected or dismantled what are two (2) acceptable methods you may use to access the structure?
- Install temporary platforms
- Use a ladder
How much is a hung scaffold working platform allowed to slope in all directions?
Three degrees in all directions.
How can you avoid stop girder trolleys from moving out of position on a travelling hung scaffold?
Rigid tie bars and plan bracing.
What is needed to prevent trolleys overrunning or running off the end of a girder on a travelling hung scaffold?
Through bolted stops.
Standards carry what fraction of the duty live load, per platform, per bay?
25% = One fourth.
What must be done to all access on any incomplete scaffold you intend to leave overnight or unattended? List two (2) risk controls.
- Access should be removed, isolated or barricaded off
- Scaffold incomplete sign
On completion of a hung scaffold that has been inspected and deemed safe to use, what documentation is required?
Handover certificate.
What are five (5) pieces of information you would find on a hung scaffold data plate?
Any five of the following:
• Type
• Model
• Working load limit (WLL)
• Serial number
• Manufacturer’s name
• Manufacturer’s identification
• Detail of the FSWR required
• Reeving requirements
• Power supply requirements
To avoid overloading the hoist rope needles and suspension rig on a suspended scaffold, what device can be used?
A load limiting device
Why is it critical to use a wire rope specified by the manufacturer for a scaffolding hoist?
It can fail completely and the platform could fall.
The wire rope can be seriously damaged. The sheaves may destroy and/or damage/break the rope.
What is the minimum working load limit for trolleys supporting a scaffold?
500kg
Where is the best place to attach the cradle’s working load limit?
On the inside
What is a swing stage cradle’s minimum width at any given point?
450mm
What are the dimensions of a work cage?
Minimum width: not less than 700mm
Maximum width: not more than 1500mm
What type of material should be used as counterweights for a needle?
Durable material where the weight remains constant under working conditions.
As approved by the manufacturer.
What information do counterweights permanently display?
The mass of the counterweight in kilograms
How should counterweights be attached to a needle?
In such a manner that they cannot be displaced or removed without the use of the tool.
What are two considerations when selecting a fall arrest harness?
Anchorage point strength
Maximum fall distance
Sharp edges
When using a shackle on a suspension rope, what maximum rope tension is permitted?
80% of the working load limit
When using a choked sling on a suspension rope, what maximum rope tension is permitted?
40% of working load limit
What measures can be taken to stop a shackle pin from unwinding accidentally?
The pins should be moused or lashed
Use a locking device
Explain why you would use spacer ties and spreader bars on suspended scaffold needles or trolleys.
To prevent movement
To prevent the rope from disconnecting and the cradle falling
At least three full turns of rope should remain on the hoist drum at all times. List two (2) reasons why this is necessary?
To reduce tension on the anchorage point on the drum
Prevent damage at the anchor point
Why is it necessary for the drum flange to extend two (2) rope diameters past the built-up rope?
To prevent the rope jumping over the drum flange.
What is the minimum length of remaining rope that must be available when a climbing type scaffold is at its lowest position?
One (1) metre
When altering or erecting suspended scaffolds and suspension rigs what documentation should be consulted?
Design specs
How would you prevent damage to a scaffolding hoist mechanism when loading or unloading materials to and from the platform?
By using a purpose-made cover.
Why would you attach a tie from the hoist-tower to an adjoining structure?
To maintain the tower in a fixed position.
What must be set up if there is a possibility that debris may fall from above the cradle?
Suitable overhead protection.
Who would be responsible for evaluating the intended loadings on a supporting structure for a suspended scaffold?
A competent person such as an engineer.
Write the horizontal clearances that are required between the moving platform of cantilevered hoist and any landing or floor.
Minimum: 25mm
Maximum: 150mm
What needs to be provided when there is a clearance of more than 100mm between the hoist platform and the landing platform?
A fold down flap or bridging gap.
A landing gate for a cantilevered hoist must be a minimum height of?
1.8 metres.
When installing a cantilevered hoist what is the maximum distance allowed between the ties/braces?
As per Manufacturer’s specifications.
Why are there landing gates installed for a cantilevered hoist?
To prevent people, tools and equipment entering the path of the hoist.
What is the only grade of ladder that can be used when accessing a hung scaffold platform
A single industrial ladder
When extending a portable access ladder above a landing minimum height it should be extended?
900mm
What are 2 things you need to consider when installing access ladders on hung scaffolding.
- Angle of the ladder
- Extension above the ladder
