High Risk Work Licence - Derrick Crane (CD) study plan

Sketch and label the main derrick crane configurations (guy derrick, stiff-leg, shear-leg) showing mast, boom, guys, winches and anchor points, and state one site situation suited to each

Explain in writing how load radius, boom angle and mast height interact to change capacity, using at least three worked numeric examples

Describe the stability triangle or tipping-line concept for a guyed derrick and list the four factors that most reduce stability on a soft or sloped pad

Identify the load-bearing elements of a foundation or ballast arrangement and explain why ballast mass and anchor capacity are verified before erection

Calculate working load limits from a supplied load chart for at least eight radius and configuration combinations, including two near the chart boundary

Explain how guy tension, anchor spacing and ground bearing pressure are checked before a derrick is erected on a prepared pad

List the pre-erection checks for anchorages, ballast, foundations and drainage, and state the consequence of each being missed

Describe the effect of wind, out-of-level ground and side loading on a derrick's rated capacity and stability

Apply the load chart method step by step to plan four lifts, recording configuration, radius, capacity, actual load and percentage of capacity used

Estimate the mass of three common loads (steel section, concrete panel, fabricated frame) using dimensions and density, and compare estimates with marked masses

Select slings, shackles and lifting points for those loads, stating the sling angle effect and the derating applied

Identify the centre of gravity of an asymmetric load and describe how to rig it to avoid tilt or load shift

Carry out a structured hazard identification for two derrick scenarios and rank the findings using a documented risk matrix

Select and justify controls using the hierarchy of controls, showing at least one substitution or engineering control per significant hazard

Produce a pre-operational inspection checklist covering structure, wire ropes, sheaves, winches, brakes, limit devices, guys, anchors and earthworks

Explain the purpose and frequency of proof load testing, periodic inspection and routine maintenance, and who may certify each

Summarise the duty-of-care obligations of the person conducting a business or undertaking, the crane operator, the dogger and the rigger, and where responsibilities overlap

State the licence, competency and record-keeping obligations that apply to derrick crane operation and high risk work in your jurisdiction

Demonstrate the standard hand and whistle signals for raise, lower, slew, stop and emergency stop, and explain what to do when a signal is unclear

Describe the communication chain for a blind lift, including radio protocol, nominated signal person and stop-work triggers

Plan and rehearse three lifts of increasing complexity, documenting the hazard controls, rigging and capacity check for each

Identify the unsafe conditions that require a lift to be stopped and state the corrective action for each

Explain shock loading, snatch loading and the effect of rapid slewing or hoisting on wire rope and structure

Review two worked incident case studies and identify which control failed at each stage of the lift

Write and walk through an emergency procedure covering power failure, brake failure, load hang-up, structural alarm, fire and adverse weather

Describe the shutdown sequence after an incident, including securing the load, isolating energy and preserving the scene

Sequence the dismantling of a derrick crane from load removal through guy release, boom lowering, mast removal and anchor recovery

List the transport, storage and post-operational documentation requirements, including inspection records, logbook entries and defect reporting

Complete two full-length practice exams under timed conditions and score each against the answer key

Review every incorrect answer, identify the underlying knowledge gap and write a corrected explanation for each

Recite from memory the key formulas, derating rules, inspection intervals and signal meanings that recur across domains

Confirm readiness by listing any remaining weak domain and the specific action to close it before the assessment