High Risk Work Licence - Slewing Mobile Crane C2 (20t) study guide
High Risk Work Licence - Slewing Mobile Crane C2 (20t) · Work through your exam, one topic at a time.
The C2 Slewing Mobile Crane licence is an Australian high risk work licence class covering slewing mobile cranes with a maximum rated capacity of up to 20 tonnes. It suits operators who load, slew, travel and place loads with these machines on construction, industrial, utility and infrastructure sites. The High Risk Work Licence - Slewing Mobile Crane C2 (20t) study guide has 10 sections and about 3,664 words.
01Legislative and regulatory requirements
Slewing mobile crane work in Australia sits inside a layered safety system. At the top is harmonised work health and safety (WHS) legislation in most states and territories, with Victoria, Western Australia and the Commonwealth operating their own variants.
397 words, about 2 min02Standards, codes and duty of care
Beyond the Act and regulations, candidates must understand how standards and codes support the duty of care. The model Code of Practice for managing risks of plant, and the general risk management code, describe the process: identify hazards, assess risk, control, review.
380 words, about 2 min03Hazard identification, risk assessment and control
Hazard identification, risk assessment and control is the backbone of crane work. Identify hazards before and during the task: the load (mass, shape, centre of gravity, hazardous contents), the crane (capacity, configuration, condition), the ground and environment (slope, soft spots, underground services, powerlines, wind, visibility, other workers), and the task itself (lift path, swing radius, crush zones, taglines).
327 words, about 2 min04Crane types, terminology, capacity and configuration
A slewing mobile crane is one that can rotate (slew) about a vertical axis and travel between sites. Common configurations include truck-mounted, rough-terrain, all-terrain and pick-and-carry types.
356 words, about 2 min05Pre-operational inspections, checks and maintenance
A pre-operational inspection is a systematic check of the crane before use. Walk around and check for structural damage, cracks, corrosion, loose or missing fasteners, hydraulic leaks, tyre condition and pressure, outrigger beams and pads, and the condition of the slew ring and its bolts.
349 words, about 2 min06Rigging, slinging and load calculations
Rigging and slinging determine whether the load arrives intact and whether the crane stays within capacity. Know the common sling types - chain, wire rope, synthetic webbing and round slings - and their rated capacities, markings and inspection criteria.
325 words, about 2 min07Site preparation, crane positioning and ground conditions
Ground conditions are a leading cause of crane incidents. Before positioning, assess the ground: bearing capacity, slope, voids, underground services, recent fill, and the effect of rain.
336 words, about 2 min08Slewing mobile crane operation and load handling
Smooth, controlled operation is the mark of a competent operator. Plan the lift: know the load, the path, the destination, the signals and the emergency stop.
278 words, about 1 min09Communication, signalling and teamwork
Crane work is a team task. The operator, dogger/rigger and supervisor must share a common understanding of the lift.
288 words, about 1 min10Emergency procedures, incident response and shutdown
Know the emergency plan before the lift: emergency stop, lowering a suspended load, fire, powerline contact, load drop, crane collapse, injury and evacuation. If a load is dropped or a crane contacts powerlines, keep people clear, do not touch the crane, and call emergency services and the electricity supply authority.
628 words, about 3 min