High Risk Work Licence - Non-Slewing Mobile Crane CN study guide
High Risk Work Licence - Non-Slewing Mobile Crane CN · Work through your exam, one topic at a time.
The Non-Slewing Mobile Crane licence - commonly called the CN licence - is an Australian high risk work licence for operating mobile cranes that cannot slew (rotate) while carrying a load. Typical machines include Franna-style pick-and-carry cranes and other articulated or rigid non-slewing mobiles used across construction, civil works, mining, manufacturing, and maintenance. The High Risk Work Licence - Non-Slewing Mobile Crane CN study guide has 9 sections and about 2,685 words.
01Legislative Framework, Duty of Care and Licence Obligations
Non-slewing mobile crane work sits inside a stack of obligations. At the top is general work health and safety law, which imposes a primary duty on the person conducting a business or undertaking (PCBU) to eliminate or minimise risks so far as is reasonably practicable, plus duties on officers, workers and other persons at the workplace.
370 words, about 2 min02Hazard Identification, Risk Assessment and Control
Hazard identification for non-slewing mobile cranes starts with the ground and the airspace. Ground hazards include soft fill, buried services, voids, recent trenches, sloping surfaces and underground tanks or pits.
311 words, about 2 min03Crane Types, Configurations, Capacities and Load Charts
A non-slewing mobile crane cannot slew (rotate) its boom while carrying a load; it travels and lifts with a fixed orientation, typically a pick-and-carry or articulated/rough-terrain configuration. Capacity is therefore governed by the load chart for the specific boom configuration, boom length, radius and outrigger or tyre condition.
307 words, about 2 min04Pre-Operational Inspection, Setup and Stability
A pre-start inspection covers the crane structure (cracks, corrosion, deformation), hydraulics (leaks, hose condition, cylinder condition), wire rope (broken wires, kinks, corrosion, end fittings), hooks (latch, throat opening, wear), brakes, steering, tyres, warning devices, and safety decals. The inspection is recorded, and defects are classified: minor (monitor and record), major (repair before use), or critical (remove from service immediately).
303 words, about 2 min05Rigging, Slinging, Load Estimation and Lifting Gear
Estimating mass is a core skill. Use known data (drawings, markings, weighbridge), then calculate from volume and density for regular shapes.
332 words, about 2 min06Communication, Signalling and Teamwork
Lifting operations rely on a single, clear line of communication. The designated dogger or rigger gives signals to the operator; only one person signals at a time.
275 words, about 1 min07Crane Operation, Travel and Load Handling
Operate within the load chart at all times. Start and stop smoothly to avoid dynamic loads, which can exceed static capacity.
259 words, about 1 min08Emergency Procedures, Incident Response and Shutdown
Before the lift, the team should know the emergency stop location, the isolation procedure, the first aid and emergency contacts, and the evacuation route. For crane-specific emergencies: powerline contact (stay in the cab, warn others away, do not touch the crane and the ground simultaneously), hydraulic failure (lower the load if possible, then isolate), fire (isolate power, use the correct extinguisher, evacuate), and overturning risk (lower the load, retract the boom, move to stable ground).
295 words, about 1 min09Maintenance, Inspection Records and Defect Reporting
Cranes require planned maintenance to the manufacturer's schedule, plus periodic inspections by a competent person. Records must be kept: pre-start checks, periodic inspections, maintenance, repairs, modifications, and defect reports.
233 words, about 1 min