Boom Lift Inspection & Certification
Engineering inspection and certification of self-propelled boom lifts, covering the boom, turntable, drive base, hydraulics and safety systems.
A boom lift is a self-propelled elevating work platform with an articulating or telescopic boom mounted on a rotating turntable and a drive base. It delivers both height and horizontal outreach, letting an operator work up and over obstacles from a platform that can be repositioned without lowering. This flexibility comes from a complex structure, and this page explains how we inspect and certify it against the relevant Australian Standards.
Understanding the boom lift as a structure
A boom lift concentrates enormous leverage into a slender structure. When the boom is fully extended and slewed, the platform load acts on a long moment arm, generating high bending stresses at the boom base, the turntable and the slew ring. Our inspection follows that load path deliberately, because a defect at the turntable is every bit as consequential as one at the boom tip.
Articulating models add pivot joints and a jib, each with pins and bushes that wear and weld connections that can crack. Telescopic models add slide pads and wear pads inside the boom sections. We tailor the inspection to the specific boom geometry so no fatigue-critical joint is overlooked.
The slew ring and turntable
The slew ring bearing is a defining feature of a self-propelled boom lift and a component that must be checked with discipline. We measure slew ring tilt or rock to detect bearing wear, verify the mounting bolts to the manufacturer's torque, and inspect for cracking at the ring-to-frame connection.
A worn slew ring changes the way the whole boom sits under load, so early detection through tilt measurement is far preferable to discovering the problem through a sudden loss of stability.
Hydraulics, controls and emergency systems
Boom lifts depend on hydraulic power for lift, extension, articulation, slew and drive, and on holding valves to keep the platform stable if a hose fails. We pressure-test the system, check every cylinder for drift, and confirm that the auxiliary power unit or emergency descent brings an elevated operator safely to the ground if the primary system fails.
Control testing covers both platform and ground stations, the dead-man devices, and the function-cut-out interlocks that limit boom movement when the machine is on a slope or overloaded.
Drive base and stability
Because a boom lift is driven while elevated, its drive base and stability systems are safety critical. We inspect tyres or tracks, brakes, and oscillating or extendable axles, and verify the tilt sensor disables elevated functions when the chassis exceeds the rated slope.
The interaction between drive and boom position is checked too: many machines automatically reduce drive speed or cut certain functions when the boom is raised, and these interlocks must operate correctly.
Major inspection and life extension
At ten years, AS 2550.10 requires a major inspection in which the boom, turntable and pinned joints are examined in detail. For boom lifts this often means removing the boom pins to inspect bores and applying ultrasonic and magnetic particle testing to high-stress welds.
Where the assessment finds a machine to be sound, we certify it for a further defined period. Where defects exist, our engineering report specifies whether they can be repaired to restore rated capacity or whether the component must be replaced.
Frequently Asked Questions
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