E2 - Describe Lifting Loads with Cranes and Hoists Flashcards
What must be done if a load, being lifted, accidentally comes in contact with the boom of a crane
Inspect the crane
How long may a suspended loads left on the hook while the operator is not at the controls?
Not allowed
In what situation is it acceptable for a worker to ride a load?
Not allowed
What is the minimum clearance required while working around a 100,000 volt power line?
4.5
What is the minimum clearance required while working around a 200,000 volt power line?
4.5
Describe the center of gravity?
Balance point
Where should the slings attach to the load in relation to the center of gravity?
Equal distance to or above the point of balance.
Where will a loads center of gravity be positioned after it is lifted of the ground?
Once lifted off the ground, position of center of gravity will be down.
What type of rope is suitable for use as a tag line?
Polypropylene.
What type of synthetic fiber rope conducts electricity when it gets wet?
Nylon
How long should a tag line be?
Long enough to be safe.
Where should a tag line be attached to a long load?
At the end, using a bow line.
Where would the worker stand if they are guiding a load of trusses onto the roof?
In a safe location, incase the load falls.
Limit of approach for power line over 250 000 Volts?
6 M (20’)
To maintain stability what is needed?
Centre of gravity, sling locations and sling types must be considered.
