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Evidence Guide: AHCARB310A - Perform aerial rigging

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

AHCARB310A - Perform aerial rigging

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare work site

  1. The location of worksite and location of the correct tree is confirmed as per the scope of works.
  2. Required site permits and licences are obtained.
  3. Tree is inspected for structural defects.
  4. Site hazards are identified, risks assessed and suitable controls implemented.
  5. The work zone is confirmed with the work crew and is monitored.
  6. Traffic management plans for the work site are implemented.
  7. Communications are initiated, received and confirmed as an ongoing process.
The location of worksite and location of the correct tree is confirmed as per the scope of works.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Required site permits and licences are obtained.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Tree is inspected for structural defects.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Site hazards are identified, risks assessed and suitable controls implemented.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

The work zone is confirmed with the work crew and is monitored.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Traffic management plans for the work site are implemented.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Communications are initiated, received and confirmed as an ongoing process.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare rigging

  1. Rigging method is determined and communicated to work crew.
  2. Rigging method confirms the risk controls selected in accordance with established and documented low risk work methods.
  3. Appropriate rigging equipment is selected.
  4. Rigging equipment is inspected for equipment defects assembled and installed.
Rigging method is determined and communicated to work crew.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Rigging method confirms the risk controls selected in accordance with established and documented low risk work methods.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Appropriate rigging equipment is selected.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Rigging equipment is inspected for equipment defects assembled and installed.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Design the rigging system

  1. The load limit of the rigging system is determined.
  2. Appropriate anchor and attachment points are selected.
  3. Load and balance calculations are performed.
  4. The impact of force under normal/failure conditions is determined and a safety factor is applied.
  5. Rigging system is designed to allow for the load and impact of the forces.
  6. Rigging system is communicated to work crew.
The load limit of the rigging system is determined.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Appropriate anchor and attachment points are selected.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Load and balance calculations are performed.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

The impact of force under normal/failure conditions is determined and a safety factor is applied.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Rigging system is designed to allow for the load and impact of the forces.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Rigging system is communicated to work crew.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Perform rigging operations

  1. Effective communications are maintained between the work crew during the sequence of the rigging process.
  2. Rigging is attached.
  3. Appropriate knots are used where required.
  4. Rigging system is monitored and adjusted in accordance with environmental conditions.
  5. Load is tensioned and tested.
  6. Load is controlled and raised, lowered or re-directed.
  7. The appropriate components of the rigging system are retrieved.
Effective communications are maintained between the work crew during the sequence of the rigging process.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Rigging is attached.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Appropriate knots are used where required.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Rigging system is monitored and adjusted in accordance with environmental conditions.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Load is tensioned and tested.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Load is controlled and raised, lowered or re-directed.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

The appropriate components of the rigging system are retrieved.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Complete tree rigging operations

  1. Load frequency and size matches the process capacity of the ground crew.
  2. Rigging operations are completed as per scope of works.
  3. Tools, equipment and machinery are cleaned, checked, and replaced if faulty or worn, and stored.
Load frequency and size matches the process capacity of the ground crew.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Rigging operations are completed as per scope of works.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Tools, equipment and machinery are cleaned, checked, and replaced if faulty or worn, and stored.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy holistically all of the requirements of the performance criteria and required skills and knowledge and include achievement of the following:

design and implement a rigging system;

use established and documented methods of rigging;

perform rigging operations and

communicate effectively with work crew.

Context of and specific resources for assessment

Competency requires the application of work practices under work conditions. Selection and use of resources for some work sites may differ due to the regional or enterprise circumstances. There is an industry expectation for refresher training and assessment.

Required Skills and Knowledge

Required skills

technical skills sufficient to:

identify, select, assemble, use and maintain a range of rigging equipment and devices in a range of contexts and conditions

inspect equipment before and during use and identify problems, defects and faults

select appropriate anchor and attachment points

perform tip lowering, butt lowering, horizontal lowering or unchanged lowering

safely operate rigging equipment

carry out rigging operations appropriate to site conditions

identify unsafe rigging practices

understand equipment terminology and names

select and tie a wide range of knots required for rigging

operate lowering devices as required

practice rescue techniques

perform rigging from an elevated work platform (EWP) where an EWP is being used

store and maintain rigging equipment

communication skills sufficient to:

use and respond to appropriate communication and interpersonal techniques and methods with colleagues and others

use voice, hand and whistle signals with other operators to maintain effective and low risk rigging operations

report information about problems, defects and faults.

literacy skills sufficient to:

accurately locate and report information;

interpret written text material; and,

interpret, apply and convey information in written, diagrammatic and/or verbal form.

spatial skills sufficient to:

estimate distances and dimensions of trees and equipment

estimate the centre of gravity for balancing a load

estimate areas for safe work zones.

numeracy skills to:

understand and recognise numerical terms of equipment breaking strains, safe working loads, manufacturer's specifications and labeling

use basic geometry to measure distances and dimensions

problem solving skills sufficient to:

identify work requirements;

identifying any faults in tools, equipment or materials

recognise own limitations in identifying problems in conditions and trees for rigging

demonstrate appropriate response procedures following identification of problems; and, provide alternative rigging solutions

identify hazards, assess risk and implement risk controls

apply low risk work practices including the use of personal and protective equipment and control of hazards

teamwork skills sufficient to:

use communications to complete complex tasks efficiently and safely

coordinate own work with others to action tasks and sequence the work team activities;

to relate to people from a range of cultural and ethnic backgrounds and with varying physical and mental abilities

the ability to comply with legislation, regulations, standards, codes of practice and established safe practices and procedures for rigging.

Required knowledge

organisational and site standards, requirements, policies and procedures for rigging

types and purposes of a range of rigging equipment and devices

the use, operation and maintenance of rigging equipment in accordance with the manufacturer's specifications and recommendations

common problems with rigging and their potential consequences and solutions

established communication and management channels and protocols

identification and evaluation of structural defects in trees

methods of using and operational principles and limitations of friction devices

procedures for recording and reporting workplace information

appropriate mathematical procedures for estimating and measuring

common rigging hazards

basic physics for load distribution, gravity, heat, potential and kinetic energy, mass, force and leverage

knowledge and understanding of AS4373-2007 Pruning of amenity trees

Code of Practice relevant to the full range of processes for rigging

environmental protection requirements

tree anatomy, physiology, nomenclature and taxonomy

safe working load of rigging equipment

awareness of breaking strength, safety factor and cycles to failure

signals and communication systems

first aid and rescue procedures

use of personal protection equipment.

Range Statement

The range statement relates to the unit of competency as a whole.

Trees include:

hardwood

softwood

palms and palm-like

trees that are alive, dead, single or multi-stemmed, leaning or straight.

Structural defects may include:

cracks

splits

cavities

decay

inclusions.

Site hazards may include:

uneven/unstable terrain

high risk trees and tree parts

overhead and underground services

excavations

traffic

structures

hazardous materials

fires

insects and animals

other personnel and machinery.

Traffic may include:

pedestrian

vehicle.

Communication may include:

voice communications

whistles

hand signals.

Work zone may include:

the exclusion zone

safe drop zone

safe fall zone

traffic management zone

asset management zone

the area under the load

the area that the load is directed to.

Rigging method may include:

simple rope

taut line

speed line

tag-pull line

lowering

raising

cradling

tip or butt lowering

false crotch.

Rigging equipment may include:

ropes including aspects of rope such as:

materials

construction

diameter

limits

terminations

karabiners

pulleys

slings

shackles

rapids.

Slings may be:

spliced

sewn

swaged

adjustable

continuous

fixed length.

Slinging configurations could include choke or basket.

Equipment defects may include:

signs of:

wear

melting

burning

stretching

cracking

incompatibility

overload failure

equipment that is:

cut

bent

broken

faulty.

Rigging system includes:

the assembly of all the component parts of rigging equipment. This may include mechanical advantage and friction from tree or friction devices or other fixed objects.

Anchor and attachment points may include:

a fork

a false crotch made from a sling and pulley

a cambium saver.

Load may include:

tree

tree parts

rigging equipment or tools.

Knots may include:

bowline

running bowline

bowline on a bight

blood knot

tautline

sheet bend

Prussik

figure 8

friction

alpine

timber hitch

clove hitch

half hitch.

Environmental conditions may include:

the range of variations in weather such as wind speed and direction.