High Risk Work Licence - Concrete Placing Boom (PB) case studies
High Risk Work Licence - Concrete Placing Boom (PB) · Put your knowledge to work in context.
The Concrete Placing Boom (PB) High Risk Work Licence is an Australian competency-based credential that authorises a person to operate a concrete placing boom - a truck-mounted or stationary boom with an articulated pipeline that delivers concrete to the pour location. It is intended for concrete pump operators, boom hands, and site personnel who control the boom, and it sits within the national high risk work licensing framework. The High Risk Work Licence - Concrete Placing Boom (PB) case studies are 5 cases and about 3,651 words.
1Night Pour Beside a Retaining Wall
A 36 m five-section truck-mounted boom is set up at 21:30 for a night pour. The outrigger pad on the left rear sits on compacted fill that was placed eight weeks ago; the right rear pad is on a concrete apron.
862 words, about 4 min2Boom Contact With an Overhead Line on a Tight Site
A 32 m four-section boom is positioned in a residential street to place concrete for a first-floor slab. The only practical setup puts the boom's working arc within 4.5 m of a 22 kV overhead line running parallel to the kerb.
753 words, about 4 min3Outrigger Pad Sinks Mid-Pour on a Sloping Site
A 28 m three-section boom is set up on a site with a 1-in-12 fall. The operator has levelled the machine using the outriggers, with the front left leg extended 1.4 m and the rear left leg extended 0.6 m.
671 words, about 3 min4Load Chart Dispute on a Rooftop Deck Pour
A 24 m boom is set up on a suspended concrete deck to place concrete for a plant room 18 m away. The deck is rated at 5 kPa.
690 words, about 3 min5Defect Found During Pre-Start Inspection
During the pre-start inspection on a 30 m boom, you find hydraulic fluid weeping from the base of the second boom section's lift cylinder, a frayed wire rope on the boom's emergency lowering system with three broken outer wires over a 40 mm length, and a missing pin retaining clip on the outrigger beam. The machine was used the previous day without reported issues.
675 words, about 3 min