List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.
Element | Performance criteria |
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. |
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 |
The candidate must be observed demonstrating rigging techniques for lowering, controlling and redirecting loads during tree pruning and tree removal.
The candidate must be assessed on their ability to integrate and apply the performance requirements of this unit in a workplace setting. Performance must be demonstrated consistently over time and in a suitable range of contexts.
The candidate must provide evidence for and demonstrate:
confirming location of worksite and location of correct tree as identified in scope of works
ensuring scope of works is within capacity and limits of team and equipment
obtaining required site permits and licenses
determining location of above-and-below-ground services
undertaking a site-specific risk assessment by identifying work health and safety hazards and assessing risk
inspecting trees and identifying structural defects in relation to taxonomic tree species, tree anatomy, and tree physiology
considering impact of wind speed and direction on rigging methods
considering ‘cycles to failure‘ of load-bearing equipment
selecting, preparing, and carrying out pre-operational and safety checks, on tools, equipment and machinery
selecting and using personal protective equipment
discussing and confirming work-zones locations and areas with work team
recording and implementing work health, safety, site, environmental and traffic control measures
communicating with work team during operations using voice, hand and whistle signals
determining load limit of rigging system
selecting appropriate anchor and attachment points
considering mass and dimensions of tree part, centre of gravity, dimensions in relation to working space
calculating load and balance
consider breaking strength and safety factor of equipment in use
determining impact of force under normal and failure conditions and apply safety factor
designing rigging system to allow for load and impact of force
discussing rigging system with work team
selecting appropriate rigging equipment and inspecting for defects
assembling and installing rigging equipment
identifying problems, unsafe rigging practices and provide alternative rigging solutions
maintaining effective communication with work team during rigging process
attaching rigging and using appropriate knots as required
monitoring and adjusting rigging system, taking into account environmental conditions
testing tensioned load
controlling load and raise, lowering or redirecting as required and in a manner appropriate to worksite
operating lowering and friction devices
performing tip lowering, butt lowering, horizontal lowering and lifting as required
matching load frequency and size to processing capacity of ground crew
retrieving appropriate components of rigging system
checking proper completion of rigging operations
cleaning and checking tools, equipment and machinery, replacing if faulty or worn, and storing
use of industry standard terminology to describe arboriculture, equipment and work environment.
The candidate must demonstrate knowledge of:
site-specific risk assessments
above-and-below-ground services
selection, tying methods and purpose of appropriate industry knots
types and purposes of a range of rigging equipment and devices
estimation of distances and dimensions of tree parts and equipment
estimation of centre of gravity for balancing a load
how to estimate areas for safe work zones
estimation of breaking strength, safety factor and cycles to failure
signals and communication systems
common problems and hazards with rigging and their potential consequences and solutions
breaking strain, safe working load and ‘cycles to failure’ for rigging equipment
anatomy, physiology, and taxonomy of tree species for a range of trees
how variations in weather such as wind speed and direction affect work
signs of equipment defects
structural defects in trees
operational use of lowering and friction devices
first aid and rescue personnel, equipment and procedures applicable to tree work.
Assessment must be demonstrated consistently over time in a suitable range of contexts and have a productivity-based outcome. No single assessment event or report is sufficient to achieve competency in this unit.
Assessment may be conducted in a simulated or real work environment, however determination of competency requires the application of work practices under work conditions.
The mandatory equipment and materials used to gather evidence for assessment include:
equipment:
rigging equipment
single rope technique (SRT) climbing kit
static and dynamic rope kit
harness
lowering and friction devices
high decibel whistle
personal protective equipment (PPE)
first aid and emergency kit
rescue kit
traffic management kit
signage – work zone
trees
materials:
rigging operations form - aerial
hazard identification and risk control form
equipment and PPE check form
emergency preparation form
rescue form - aerial
work communications form
knot identification form
Assessors must satisfy current standards for RTOs in the assessment of arboriculture units of competency.
Assessment must be conducted only by persons who have:
arboriculture vocational competencies at least to the level being assessed
current arboriculture industry skills directly relevant to the unit of competency being assessed