Application
This unit of competency describes the outcomes required to select timber preservation techniques taking into account the principles of environmental suitability and sustainability.
The unit applies to those working in technical roles in the forestry and forest products industry.
No licensing, legislative, regulatory, or certification requirements apply to this unit at the time of publication.
Elements and Performance Criteria
ELEMENTS | PERFORMANCE CRITERIA |
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the range of conditions. |
1. Determine preservation requirements for timber | 1.1 Identify service requirements for preservation of timber. 1.2 Identify required chemical retention rates and calculate suitable solution strengths. 1.3 Identify penetration pattern of timber for treatment. |
2. Decide on appropriate preservation technique/s for timber | 2.1 Investigate options for preservation techniques for job requirements and their environmental impact. 2.2 Review and compare options for suitability and value. 2.3 Select most appropriate preservation technique. 2.4 Identify and follow water management procedures. 2.5 Develop contingency management plans. 2.6 Implement quality assurance procedures for preserving timber. 2.7 Implement environmental monitoring procedures. |
Evidence of Performance
A person demonstrating competency in this unit must satisfy all of the elements, performance criteria and foundation skills of this unit.
follow organisational procedures for selecting timber preservation techniques
select the most suitable preservation technique for different types of timber considering chemical retention rates and preservation patterns.
Evidence of Knowledge
A person competent in this unit must be able to demonstrate knowledge of:
organisational procedures for preserving timber and selecting timber preservation techniques
environmental risks and hazards associated with different preservation techniques
timber preservation chemicals and their safe use and storage
timber preservation techniques including:
full cell (Bethel) process
empty cell process
rueping process
double treatment
boultonising
Australian Standards for timber preservation and market requirements, particularly Australian Standard (AS) 1604.1-2010 Specification for preservative treatment - Sawn and round timber and in Queensland, the Queensland Timber Utilisation and Marketing Act
service requirements including:
treated timber hazard ratings
marine borer hazard ratings
timber durability ratings
chemical retention rate/s including the amount of preservative retained in a piece of timber after treatment and fixation have taken place, and must be expressed as either weight for volume or weight for weight.
preservation patterns including the distribution of preservative within the cross section of a treated piece of timber.
water management procedures including consideration of:
ground water monitoring
bund storages
contaminated water containment
contaminated water reuse
drip pads
contingency plans including consideration of:
chemical handling and spill procedures
groundwater leakage procedures
fire suppression procedures
emergency evacuation procedures
environmental monitoring procedures including monitoring of:
groundwater
chemical disposal
residue disposal
dust
noise
types of tools and equipment, used for timber preservation and their safe use and maintenance.
Assessment Conditions
The following resources must be made available:
organisational policies and procedures for selecting timber preservation techniques
examples of preservatives and end uses from which candidates must select appropriate chemicals and techniques.
Competency is to be assessed in the workplace or a simulated environment that accurately reflects performance in a real workplace setting.
Assessor requirements
Assessors must:
hold the appropriate assessor competency standards as outlined in regulations; and
be able to demonstrate vocational competencies at least to the level being assessed; and
be able to demonstrate how they are continuing to develop their VET knowledge and skills as well as maintaining their industry currency and assessor competence.
Foundation Skills
This section describes those core and employment skills that are essential to performance and are not explicit in the performance criteria. | |
calculate chemical solution strengths, timber and fluid volumes; measure chemical salt retention rates. | |
Range Statement
Not Applicable
Sectors
Sawmilling and Processing
Timber Manufactured Products
Timber Merchandising
Wood Panel Products
Timber Truss and Frame Design and Manufacture