Unit of competency Outline

Date retreived
22/07/2026 12:58 PM AWST

Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.

Perform aerial rigging

Perform aerial rigging

Unit of competency
National Code
AHCARB310
State Code
BAL77
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
1.00
Current Release Date
27/06/2016
View on TGA
State Implementation and Classification
Approved Date
12/01/2017
Field of Education
040329 - Scaffolding And Rigging
Original Release Date
12/01/2017
Nominal Hours
90
Description
This unit of competency describes the skills and knowledge required to perform aerial rigging by selecting and using appropriate equipment and methods. This work requires application of extensive arboricultural skills and knowledge, including various rigging techniques for lowering, controlling and redirecting loads during tree pruning and tree removal. Work is implemented with low risk work procedures and to comply with Safe Work Method Statement documentation.This unit applies to individuals who have a range of skills to select and apply a specialised range of methods, tools, equipment and information to complete routine activities and provide and transmit solutions to predictable and sometimes unpredictable problems. Discretion and judgement is required. Elevated work platforms may be involved.Licensing, legislative, regulatory, or certification requirements apply to this unit in some states and territories at the time of publication, and may differ according to jurisdiction. Specific determination should be sought through the relevant State or Territory. Works involving this unit of competency may be subject to local tree protection and preservation laws, and the relevant content of applicable Australian Standards.
Notes
Elements and Performance Criteria
1. Prepare work site
  • 1.1 Confirm location of worksite and location of correct tree as identified in scope of works
  • 1.2 Obtain required site permits and licences
  • 1.3 Determine location of above-and-below-ground services
  • 1.4 Undertake a site-specific risk assessment by identifying work health and safety hazards and assessing risk
  • 1.5 Ensure scope of works is within capacity and limits of team and equipment
  • 1.6 Confirm first aid and rescue personnel, equipment and procedures applicable to tree work
  • 1.7 Inspect tree and identify structural defects in relation to tree taxonomy, anatomy and physiology
  • 1.8 Consider impact of wind speed and direction on rigging methods
  • 1.9 Consider ‘cycles to failure‘ of load-bearing equipment
  • 1.10 Select, prepare, and carry out pre-operational and safety checks, on tools, equipment and machinery
  • 1.11 Select and use personal protective equipment
  • 1.12 Discuss and confirm work-zone locations and areas with work team
  • 1.13 Record and implement work health, safety, site, environmental and traffic control measures
2. Design and prepare rigging system
  • 2.1 Determine load limit of rigging system
  • 2.2 Consider mass and dimensions of tree part, centre of gravity, dimensions in relation to working space
  • 2.3 Calculate load and balance
  • 2.4 Consider breaking strength and safety factor of equipment in use
  • 2.5 Select appropriate anchor and attachment points
  • 2.6 Determine impact of force under normal and failure conditions and apply safety factor
  • 2.7 Design rigging system to allow for load and impact of force
  • 2.8 Discuss rigging system with work team
  • 2.9 Select appropriate rigging equipment and inspect for defects
  • 2.10 Assemble, reassess and install rigging equipment
3. Perform rigging operations
  • 3.1 Communicate with work team during operations using voice, hand and whistle signals
  • 3.2 Attach rigging and tie, dress, set and finish arborist knots
  • 3.3 Test tensioned load
  • 3.4 Identify problems, unsafe rigging practices and provide alternative rigging solutions
  • 3.5 Monitor and adjust rigging system, taking into account environmental conditions
  • 3.6 Control load and raise, lower or redirect as required and in a manner appropriate to worksite
  • 3.7 Perform tip lowering, butt lowering, horizontal lowering and lifting as required
  • 3.8 Operate lowering and friction devices as required
  • 3.9 Match load frequency and size to processing capacity of ground crew
  • 3.10 Process plant material and debris during rigging operations
  • 3.11 Maintain effective communication with work team during rigging process
4. Complete tree rigging operations
  • 4.1 Check proper completion of rigging operations
  • 4.2 Retrieve appropriate components of rigging system in a controlled manner
  • 4.3 Clean and remove plant material and debris from site
  • 4.4 Clean and check tools, equipment and machinery, and store
  • 4.5 Clean and store personal protective equipment
No information
No information
Replaces
State Code National Code Title Type
D6664 AHCARB310A Perform aerial rigging Unit of competency
Replaced By
State Code National Code Title Type
OBV39 AHCARB317 Dismantle trees Unit of competency
State Code National Code Title Type
BDE4 AHC30816 Certificate III in Arboriculture Qualification