Vehicle-Mounted Loading Crane (VMLC) Operation SWMS

Vehicle-mounted loading crane (VMLC) operations involve articulated knuckle-boom or stiff-boom cranes mounted to truck chassis, typically rated above 10 tonne-metres, used to self-load and unload palletised materials, steel, plant, and prefabricated components at construction, civil, and delivery sites across Australia. The work integrates mobile plant operation, rigging, outrigger deployment on variable ground, and lifting near workers, traffic, and overhead services — each a recognised high-risk construction work trigger under WHS Regulation 2011 r291. A Safe Work Method Statement is mandatory before work commences because the activity simultaneously involves powered mobile plant, lifting of suspended loads, work near energised electrical lines, and operation adjacent to vehicular traffic. The SWMS must identify task-specific hazards, document the hierarchy of controls, record HRCW worker consultation, and be available on site for inspection by regulators and principal contractors. This template addresses outrigger pad selection, load chart interpretation, exclusion zones, and stored-energy dump procedures required under AS 2550.1 and the model Code of Practice for cranes.

Hazards identified

7 hazards covered, sorted by priority.

Control measures

Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.

1. 1Elimination — Where practicable, schedule delivery to sites with permanent hardstand or pre-engineered crane pads, eliminating the need to assess ground bearing capacity on each visit.
2. 2Elimination — Reroute lifts to avoid passing under or near energised overhead lines by relocating the truck setup position outside the no-go zone defined in the Code of Practice.
3. 3Substitution — Replace manual sling rigging with certified lifting frames, vacuum lifters, or self-locking pallet hooks to reduce dogger exposure beneath suspended loads.
4. 4Substitution — Use a smaller, more manoeuvrable crane truck for confined urban sites where a larger VMLC would force lifts beyond optimal load chart zones.
5. 5Engineering — Deploy aluminium or hardwood outrigger pads sized via ground bearing pressure calculation per AS 2550.1, with rated capacity indicator (RCI) and anti-two-block alarms active.
6. 6Engineering — Install tiger tails, voltage proximity alarms, and physical barriers where lifts occur within 6.4m of overhead lines per the Work Near Overhead Electric Lines CoP.
7. 7Administrative — Conduct documented pre-start inspection, load chart verification, and HRCW SWMS sign-on before each shift; verify high-risk work licence (CN/CV/C2/C6) currency for operator.
8. 8Administrative — Establish a 3m exclusion zone around suspended loads enforced by a licensed dogger using radio communication; implement spotter and traffic management plan for reversing.
9. 9PPE — Issue Class D/N hi-vis garments, AS/NZS 1801 hard hats with chinstraps, AS/NZS 2210.3 steel-cap boots, cut-resistant gloves for sling handling, and UV-rated safety glasses.
10. 10PPE — Provide hearing protection (SLC80 rated) for dogger working near hydraulic pump and chassis PTO during sustained lift cycles exceeding 85 dB(A).

Applicable Codes of Practice

High-Risk Construction Work triggered

Worked example

On a Tuesday morning at a suburban townhouse construction site, a VMLC operator arrives with a load of structural steel beams for the ground floor frame. Before lowering outriggers, the operator opens this SWMS at the truck cab with the site supervisor and the licensed dogger for the pre-start brief. They walk the proposed setup position and identify three hazards from the document: a saturated trench backfill under the nearside outrigger footprint, an 11kV overhead service crossing the proposed slew arc, and a public footpath three metres from the load drop zone. Working through the controls, the operator relocates the truck two metres east to clear the overhead line exclusion zone, places 600mm square hardwood pads with steel spreader plates over the soft ground per AS 2550.1 bearing calculation, and the dogger erects mesh barriers along the footpath with a traffic controller stationed at the gate. All three workers sign on to the SWMS, confirming HRCW consultation. Mid-lift, a delivery van attempts to enter the laydown area; the dogger halts the slew using radio stop-command, the traffic controller redirects the van, and the lift resumes only after the exclusion zone is reconfirmed clear. The SWMS sign-on sheet, ground assessment notes, and incident log are filed digitally before the truck departs for the next drop.

Related legislation

• WHS Act 2011 (model)
• WHS Regulation 2025
• AS 2550 — Cranes hoists and winches; AS 1418 — Cranes including hoists and winches

Frequently asked questions