Required skills

Required skills include

selecting airdiffusion

sizing the system

selecting fans

designing duct work

applying cost controlling strategies

using D CAD systems effectively

interpreting drawings and specifications

communicating effectively with others

working in teams with others

communicating technical and procedural requirements to others

dealing effectively with unexpected situations

Required knowledge

Required knowledge includes

differentiation between static velocity and total pressure in air distribution ducts

laminar and turbulent flow

use of Moody diagram for flow rate and pressure drop

friction and dynamic pressure loss

ColebookWhite formula

sources of heat and pressure leakage and loss calculation

noise minimisation

fan laws

control cost parameters

duct design parameters including

standard duct sizes and gauges

available access and space

system performance requirements

system sizing and balancing methods

dual and single duct constant volume air systems

variable volume air system

multizone systems

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

A person who demonstrates competency in this unit must be able to design basic single zone duct distribution systems to meet customer requirements including cost specifications and WHS and other regulatory requirements

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

Assessors must be satisfied that the candidate can competently and consistently

implement WHS workplace procedures and practices including risk control measures

design basic single zone duct distribution systems to customer performance and cost requirements

select and size appropriate components including fans and duct work

communicate technical requirements to others including preparation of required drawings CAD files and reports

Context of and specific resources for assessment

This unit may be assessed on the job off the job or a combination of both on and off the job Where assessment occurs off the job then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations

The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team The assessment environment should not disadvantage the candidate

Method of assessment

Assessment must satisfy the endorsed Assessment Guidelines of the MEM Metal and Engineering Training Package

Assessment must satisfy the endorsed Assessment Guidelines of the MEM05 Metal and Engineering Training Package.

Assessment methods must confirm consistency and accuracy of performance over time and in a range of workplace relevant contexts together with application of underpinning knowledge

Assessment methods must be by direct observation of tasks and include questioning on underpinning knowledge to ensure correct interpretation and application

Assessment may be applied under projectrelated conditions real or simulated and require evidence of process

Assessment must confirm a reasonable inference that competency is not only able to be satisfied under the particular circumstance but is able to be transferred to other circumstances

Assessment may be in conjunction with assessment of other units of competency where required

Guidance information for assessment

Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed

WHS requirements

Environmental requirements

Single zone duct distribution system

Appropriate personnel

Enterprise procedures

Resources

Contingencies and unexpected situations