Occupational Health & Safety
According to the Occupational Health & Safety Act, to ensure that the correct rigging equipment is provided and properly maintained is the responsibility of the:
The Employer
What does a rigger need to know about a load before selecting the length and capacity of slings needed to lift the load?
Weight and center of gravity
Picture #1
All Terrain - Rough Terrain
Describe a regular rope lay
Wires are twisted in one direction, and strands in the opposite direction
What type of hitch is in the picture?
Double basket hitch
Under the Occupational Health & Safety Act, what does it mean to be a competent worker?
A competent worker is someone who is:
1. qualified to perform such work
2. familiar with the Occupational Health & Safety Act
3. knowledgeable about all or potential dangers
what is the largest single cause of fatalities associated with cranes?
High voltage contact
Picture #2
Explain what manila rope is
The only rope made of natural fibers allowed in rigging operations. Lower strength than synthetic rope. It can rot and create mildew.
What type of hitch is in this picture?
Double choker hitch
According to the occupational Health & Safety Act, what is the workers duty?
work and follow the rules of the ACT
use, wear, equipment, protective clothing as required
report defective equipment
not endanger self or any other worker
report any disobeying of ACT or Regs to supervisor
When operating a crane, when do you need a signaler?
You need a signaler in the following situations
crane is working within a boom’ s length of the limit of approach to powerlines
operator cannot see the load
operator cannot see the load’s landing area
operator cannot see the path of travel of the load or of the crane
Picture #3
Carrier Mounted Lattice Boom
Explain what Nylon rope is
The rope that has the strongest breaking strength. It has the ability to absorb shock load and has great flexibility. It can stretch up to 40% of its length. It has a resistance to rot and never used for overhead rigging.
What type of hitch is in the picture?
Single basket hitch
Which of the following is one of the “Rights of Workers”?
Right to refuse unsafe work
Right to participate
Right to know
There are many hazards related to crane operations. Name 2 of the hazards.
1. Load weight unknown = you don’t know the weight of load
2. Exceeding capacity of equipment = don’t lift more than what is allowed to load
3. Defective equipment = equipment that is cracked or broken
4. Weather – high winds, cold, visibility (can you see)
5. Powerlines - #1 cause of fatalities = hitting the powerlines as they move around
6. Improperly rigged load – the load is not properly secured and the center of gravity is off
Picture #4
Explain what polypropylene rope is
The type of rope that will stretch the most. It has the ability to float and has resistance to rot and mildew. Lower strength than nylon and poor conductor of electricity
What type of hitch would be better suited for hoisting long, loose bundles of material?
Double-wrap chocker hitch
According the the workplace Health and Safety law, what does critically injured mean?
Critically injured means an injury of a serious nature that,
1. places life in jeopardy
2. produces unconsciousness
3. results in substantial loss of blood,
4. involves the fracture of a leg or arm but not a finger or toe
5. involves the amputation of a leg, arm, hand or foot but not a finger or toe
6. consists of burns to a major portion of the body,
7. causes the loss of sight in an eye.
When does a crane's capacity decrease?
Boom angle – as the boom lowers, capacity decreases
Load radius – as radius increases (the load goes up higher), capacity decreases
Picture #5
Crawler-Mounted Telescoping Boom
Name 2 construction types of wire topes
1. Ordinary Construction
2. Warrington Construction
3. Seale Construction
4. Filler Construction
Which grade of chain is the ONLY acceptable type for use as chain slings?
Allow steel 80