slinger/signaller pick and carry Flashcards
(28 cards)
Name four different types or levels of sanctions that can be applied to slingers/signallers who do not comply with, or follow legislation’s and regulations
verbal warning, written warning, dismissal, prosecution
a)what determines the minimum distance that any part of plant and machinery has to be kept from overhead electricity lines
b)explain why a distance should be kept
a)the voltage of the electricity line and type of support (e.g wooden poles/metal pylons)
b)high voltage electricity can arc across large gaps in certain distances
List six typical subject areas that should be covered in a site induction
emergency procedures, escape routes, first aid facilities, smoking, toilets, waste disposal, lifting operations
Name three ways in which wind speed can affect lifting operations
cause load swing, can slow or increase the slew speed of the crane and can shut down lifting operations
N/A
N/A
What is the difference between a contract lift and a standard crane hire
contract lift-the crane company plans and supervises the lift.
crane hire-crane and operator to work to customers instructions via lift plan.
What two checks need to be made before a load is to be lowered into a trench or excavation
in principle- a)that the trench is clear of personnel or hazards
b)the sides of the trench are supported or the machine is a sufficient distance away- variations can occur dependant on risk assessment
if setting up to lift loads in a pedestrianised area, state one factor that needs to be taken into account by the slinger/signaller
physical segregation of pedestrians from overhead loads.
if attaching accessories to a quick-hitch coupler of a machine such as an excavator,give two reasons why the coupler should be tilted in a downwards position
prevents fouling of the accessory on the coupler which could restrict movement and cause bending and twisting of the accessory
Give four reasons that may cause a mobile-type lifting equipment to overturn
excessive load swing, soft ground, working on slopes,excessive load, insufficient counterweight
If guiding an item of lifting equipment undertaking pick and carry duties near an open trench which has a depth of 2-meters, what is the minimum distance to maintain
at least 2 meters
The safe working load (SWL) of a multi leg chain only applies in two conditions or configurations.
When each leg is equally loaded, within 45 degrees from vertical
During inspection , damage has been found to a lifting accessory what two actions must be taken
it must be taken out of service, reported, clearly marked as unusable
What are the two actions that a slinger/signaller undertakes on lifting accessories during pre-use inspections
carry out checks according to manufactures
requirements and report all defects immediately
List six factors that must be taken into account by both the machine operator and slinger/signaller if a suspended load is to be travelled across a site
the machine is capable and within its limits,travelling with a load is authorised at that site, the travel route is clear of overhead hazards, the machine is configured correctly, travel route ground is suitable,environmental conditions
what possible effects does excessive rain have on lifting operations
visibility between machine operator and signaller can be reduced, loads may be heavier, the loads may be more slippery especially if using fibre slings
when working with slewing type lifting equipment in a restricted/confined area
a)what danger can be presented with regards to the machines counterweight
b)when should measures be taken
c)what measures should be implemented
a)The gap between the counterweight and a structure being reduced or contacting the structure/object when slewing
b)when the gap will be less then 600 mm
c)sufficient clearance needs to be maintained or access routes blocked off
a)what is meant by the rated lifting capacity of lifting equipment
b)who determines it
a)the maximum lifting capacity for any particular configuration
b)the lifting equipment malefactor
state the possible effect on a item of lifting equipment if it is positioned on a slope and lifts a load
the radius causing possible instability or side loadings
what is meant by centre of gravity, or how is the centre of gravity determined on a load to be lifted
the point that is in balance
what is the definition of, or how can a hazard be determined
a hazard is a situation where there is is a potential threat or risk to life, health, property or the environment
a)on hoist rope-equipped lifting equipment how does the number of lines or falls of rope affect the lifting capacity
b)how is hoist speed affected when the number of falls is reduced
a)increasing the falls can increase the lifting equipment for a particular configuration
b)reducing falls increases hoist speed
which part of slewing-type lifting equipment is the radius measured from
usually from the centre of the slew ring to the central point of the hook
travelling with extra-long loads can be more hazardous for what reason?
the load can turn or swing and either strike the machine or a structure/other machine
