High Risk Work Licence - Slewing Mobile Crane C0 (over 100t) case studies
High Risk Work Licence - Slewing Mobile Crane C0 (over 100t) · Put your knowledge to work in context.
The C0 Slewing Mobile Crane licence is an Australian high risk work (HRW) competency for operating slewing mobile cranes with a rated capacity over 100 tonnes. It suits experienced crane operators moving up from smaller capacity classes, and people working on major construction, infrastructure, mining, energy and heavy industrial projects where large all-terrain, truck-mounted or crawler-based slewing cranes are used. The High Risk Work Licence - Slewing Mobile Crane C0 (over 100t) case studies are 5 cases and about 2,546 words.
1Outrigger Set-Up on a Compacted Fill Pad
You are setting up a 250 t all-terrain crane to lift a 38 t chiller onto a new warehouse roof. The site engineer has nominated a pad of 400 mm compacted crushed rock over a former drainage trench.
578 words, about 3 min2Two-Crane Tandem Lift of an Irregular Load
A 22 t air-handling unit, 9 m long and with its centre of gravity 6 m from the tail end, must be lifted over a 12 m high plant room wall and landed on a roof curb. Crane A (180 t) will take the head end at a 14 m radius; Crane B (130 t) will take the tail end at an 18 m radius.
555 words, about 3 min3Load Chart Selection with a Fly Jib and Reduced Counterweight
You must lift a 9.5 t steel vessel from a transport trailer to a foundation 30 m away. The only available crane is a 200 t crawler with a 60 m main boom and a 12 m fly jib offset at 20°.
501 words, about 3 min4Defect Found During Pre-Lift Inspection
During your pre-start inspection of a 300 t telescopic crane, you find a 40 mm long, 3 mm deep gouge on the outer section of the main boom, on the compression face, near a weld toe. The crane lifted 60 t yesterday without incident.
436 words, about 2 min5Loss of Radio and Load Drift During a Critical Lift
You are the lift supervisor for a 120 t pick of a prefabricated module onto a 40 m high structure. The crane is a 400 t crawler, load at 28 m radius, wind 9 m/s steady.
476 words, about 2 min