High Risk Work Licence - Slewing Mobile Crane C6 (60t) study guide
High Risk Work Licence - Slewing Mobile Crane C6 (60t) · Work through your exam, one topic at a time.
The C6 slewing mobile crane licence is an Australian high risk work licence for operating slewing mobile cranes with a maximum rated capacity above 20 tonnes and up to 60 tonnes. It suits experienced doggers and riggers moving into crane operation, and operators who already hold a lower-capacity licence and need to work with larger plant. The High Risk Work Licence - Slewing Mobile Crane C6 (60t) study guide has 10 sections and about 3,070 words.
01Legislative, Duty-of-Care and Standards Framework
A slewing mobile crane ticket sits inside a layered framework. At the top is general work health and safety law, which imposes a primary duty on the person conducting a business or undertaking to eliminate or minimise risks so far as is reasonably practicable.
394 words, about 2 min02Hazard Identification, Risk Assessment and Control
Hazard identification on a crane site is continuous, not a form filled in at the gate. The standard sequence is: identify hazards, assess the risk (likelihood and consequence), apply controls in the hierarchy of control, then monitor and review.
330 words, about 2 min03Crane Types, Configurations and Load Charts
A load chart is a set of limits for a specific configuration. Before reading a capacity you must know: the crane model; the boom length and configuration (telescopic, lattice, fly jib); the counterweight; whether the crane is on outriggers, crawler tracks or tyres; the outrigger spread; and the radius.
336 words, about 2 min04Rigging, Slinging and Load Estimation
Every lift starts with confirming the load's mass and centre of gravity. Use marked mass, shipping documents or calculation from volume and density; never guess.
310 words, about 2 min05Site Set-up, Ground Conditions and Outrigger Use
The crane's capacity assumes a stable support. Ground bearing pressure under an outrigger pad can be several times the load on that outrigger.
291 words, about 1 min06Pre-operational Inspection, Maintenance and Defect Reporting
Before each shift, the operator performs a documented inspection: tyres and tracks, outriggers and pads, boom and jib condition, wire rope (broken wires, kinks, corrosion, spooling), hook and latch, sheaves, brakes, clutches, limit switches, load moment indicator or rated capacity limiter, alarms, lights, fire extinguisher and fluid levels. The inspection is not a substitute for scheduled maintenance, and finding a defect does not authorise you to "monitor it" and keep lifting.
251 words, about 1 min07Planning and Performing Lifts, Including Multi-Crane and Complex Lifts
Every lift needs a plan proportionate to its risk. A routine lift may use a standard procedure; a complex lift needs a documented lift study covering load mass and centre of gravity, rigging arrangement, crane position and configuration, capacity at all radii through the lift path, ground conditions, environmental limits, personnel roles and contingency.
327 words, about 2 min08Communication, Signals and Personnel Coordination
Effective crane communication depends on a single designated signal person. Multiple people giving signals is a classic cause of incidents and a common exam trap.
266 words, about 1 min09Powerline, Exclusion Zone and Environmental Hazards
Approach distances to overhead powerlines are specified by regulators and network operators, and they vary with voltage. The safe approach distance applies to the crane, the boom, the load and the rigging, in all positions including slew and boom movement.
287 words, about 1 min10Shutdown, Securing, Transport and Emergency Procedures
Shutdown is a defined sequence, not simply switching off. Land and secure the load, retract and stow the boom per the manufacturer, engage parking brakes, chock wheels, retract outriggers or leave them set as required, isolate power, remove keys, secure the cab, and complete the log book.
278 words, about 1 min