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.

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 the use of risk control measures

demonstrate essential knowledge and skills to complete a building thermal performance survey

demonstrate competency within a timeframe typically expected of the discipline, work function and industrial environment

carry out a building survey and load estimate for a multiple zone commercial building

complete a building thermal performance survey for different buildings. This must include:

minimum five (5) zones

internal and system heat gains

infiltration and fresh air rates

heat flow through windows accounting for internal and external shading

heat flows through building fabric

use of simulation software.

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 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 project-related 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.

Required skills

Required skills include:

sourcing appropriate drawings, documentation and specifications for buildings

interpreting building design information for sources of heat gains

computing standard thermal values in relation to a commercial/industrial building

computing internal and system heat gains

using American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) Handbook or similar Australian data books to determine design data

using suitable computer software to determine equipment size for constant and variable volume systems and central refrigeration and boiler capacities

communicate 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:

heat gains in buildings

heat transfer theory

thermal properties of building materials, including materials designed to promote thermal conductivity or insulation

heat transfer in buildings, including effects of:

ambient conditions

materials and equipment

windows and films

design effects, including external design, room and door design, and sun position calculations

building heat flow, losses and gains, including:

convection

radiation

conduction

heat paths

building heat loss and gain calculations

thermal properties of buildings, including losses

people loads

cost implications of air conditioning and heating designs

heat loads calculations, including lighting and equipment

thermal lag

relevant legislation and codes of practice

energy efficiency and sustainability

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

WHS requirements

WHS requirements include:

legislation

protective equipment

material safety management systems

hazardous substances and dangerous goods code

local safe operation procedures

awards provisions

Environmental requirements

Environmental requirements include:

relevant legislation, regulations and codes

correct handling and disposal of liquid and solid waste

elimination or minimisation of gas, fume, vapour and smoke emissions, including fugitive emissions

dust elimination, minimisation and control

minimisation of energy and water use

elimination or control of excessive noise

use and recycling of refrigerants

Appropriate personnel

Appropriate personnel may include:

supervisor

leading hand

foreman

manager

engineer

technician

trainer

mentor

team member

customer

client

Heat gains

Heat gains may include:

external

internal

system

U values and infiltration rates for various wall/roof constructions

measure sun azimuth and altitude angles, and overall shade factors for various windows

Resources and equipment

Resources and equipment may include:

computer workstation

appropriate simulation and reporting software

reference manuals and charts

appropriate measurement equipment

building codes and codes of conduct

access to legislative and regulatory requirements

technical library

stationery

scientific calculator

appropriate tools of trade, equipment and materials

Industry standards

Industry standards include:

AS 1668 Parts 1 & 2. The use of Mechanical Ventilation and Air Conditioning in Buildings

EU Guidelines on ventilation

ASHRAE 62-89 Ventilation standard

AUBRCC or Building Code of Australia (BCA)

Enterprise procedures

Enterprise procedures may include:

use of tools and equipment

instructions, including job sheets, plans, drawings and designs

reporting and communication

manufacturer specifications

site operational procedures