1. Erecting steel structures Setting up or dismantling cranes or hoists
The first thing to consider will be the task you are to perform. Common tasks done by someone with a Basic Rigging License are :
1. Plan Job
• Dogging work such as slinging loads and directing movement of plant and equipment
Erecting steel structures
Setting up or dismantling cranes or hoists
Placing pre-cast concrete
Setting and dismantling safety nets and static lines
Erecting mast climbers
Installing cantilevered crane loading platforms
Installing perimeter safety screens and shutters.
Ground Stability
SWMS
Related Topics:
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2. Insufficient lighting
You need to make sure that the work area is properly lit up and that you can see clearly. You may need to have temporary lighting set up while you do the rigging work.
1. Plan Job
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3. Plan Job - Summary Assess the task before you begin.
A hazard is anything that can hurt you or cause damage.
The Hierarchy of Hazard Control is made up of elimination, substitution, isolation, engineering measures, safe work practices and personal protective equipment.
Both the employer and employee have duty of care responsibilities.
Check site rules/procedures and site conditions before you start work.
Plan for the forces and loads associated with the work you are going to perform.
Make sure you use equipment in line with workplace/industry procedures and manufacturer’s specifications.
Include safety equipment and communication methods in your work plan.
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4. SWL / WLL of lifting gear 2. Select and Inspect Equipment
radius
Calculating the SWL/WLL of unmarked lifting gear
diameter
There are several ‘rule of thumb’ formulas for working out the WLL of slings.
circumference
Calculating the WLL of a wire rope
The formula to calculate the WLL of FIBRE ROPE is:
WLL (kgs) = Diameter² (mm)
For example, a FIBRE ROPE with a diameter of 30 mm:
WLL = D²
WLL = 30²
WLL = 30 x 30
WLL = 900 kgs
WLL = 0.9 tonnes
Calculating the WLL of a flexible steel wire rope
The formula to calculate the WLL of FSWR is:
WLL (kgs) = Diameter² (mm) x 8
For example, a FSWR with a diameter of 20 mm:
WLL = D² x 8
WLL = 20² x 8
WLL = 20 x 20 x 8
WLL = 400 x 8
WLL = 3200 kgs (3.2 tonnes)
Calculating the WLL of a grade T chain
The formula to calculate the WLL of Grade T (80) CHAIN is:
WLL (kgs) = Diameter² (mm) x 32
For example, a chain with a diameter of 10 mm:
WLL = D² x 32
WLL = 10² x 32
WLL = 10 x 10 x 32
WLL = 100 x 32
WLL = 3200 kgs (3.2 tonnes)
2. Select and Inspect Equipment
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5. 2. Select and Inspect Equipment
Chain defects
A chain should not be used if it has the following damage:
heat affected
spot-welded links
2. Select and Inspect Equipment
pitting
stretching
damaged
gouged, cut or worn*
cracks
twisted links
rust
*more than 10% of the original diameter of the link.
Record and Report Faults
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6. Hazard prevention and control measures
Before you start the rigging work you will need to make sure that there are hazard prevention and control measures in place. This could include but is not limited to:
Restricting access to the area (isolating the area) with barricades and traffic control to make sure that loads will not pass over the top of people or that people will not get too close to any erecting or dismantling work.
3. Set Up Task
Removing any hazardous material that may get in the way.
Moving any equipment, vehicles or other mobile plant that is not directly involved in the rigging work out of the area.
Risk
Risk Management
Related Topics:
Risk Assessment
Hazard
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7. Safety gear Installing a fall arrest system (static line)
There are a number of things to consider when installing a fall arrest system (static line):
The anchor point of a single span static line should be able to hold 40kN of force.
The maximum span of a single span safety line is 4 to 6 metres.
The minimum friction pressure on the anchor point of a single static line is 4 tonne (40kN).
The sag of a single span safety line should be no more than 50mm.
3. Set Up Task
The static line should be NO LESS than 2.1 metres from the work area.
Check that anchor points are installed in work platforms or on rooftops/structures.
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8. Hand and whistle signals 4. Erect Structures and Plant
There is a series of hand and whistle signals that fall under AS – 2002 (Australian standard). The rigger and the crane operator need to check that they understand the signals that are going to be used. Signals can vary on different sites.
Hoisting down
Motion
Hand Signal
Whistle
4. Erect Structures and Plant
1 long
Hand and Whistle Signals
Related Topics:
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9. 5. Dismantle Structures and Plant
Lifting equipment
Check with your supervisor to find out if there is a standard inspection checklist used on site for post operational checks of equipment or plant. You should check lifting gear for:
Damage to hydraulic rams
Damage
Stretching
Broken wires
Damaged spreader beam
Cut/damaged fibres.
Broken wires on a FSWR
5. Dismantle Structures and Plant
Damaged fibres on a rope
Excessive wear on a shackle
Stretched parts
Wear or damage
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10. 5. Dismantle Structures and Plant
Store equipment
Make sure that all equipment is stored in a safe way so it will not be dangerous for the next person using it.
Check the site rules or manufacturer’s specifications for instructions or guidelines on storing the equipment.
Lifting gear should be stored correctly. Store lifting gear under cover in a clean, dry and well ventilated place. Lifting gear is often stored on a rack.
NEVER store slings on the ground or floor.
5. Dismantle Structures and Plant
Packing and outrigger mats may be stored on the mobile plant. Make sure they are secured properly before the vehicle moves off.
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11. Element 1–Plan Work
Question 4. What would you do if it started to rain heavily while you were doing rigging work?
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Stop working until the rain has cleared. Re-check the ground before continuing work.
Rigging Quiz
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12. Element 1–Plan Work
Question 5. Should a rigger work on structural steel that is wet from rain or fresh paint?
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No.
Rigging Quiz
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