This unit involves the skills and knowledge required to design mechanical ventilation/exhaust systems and select equipment.

It includes applying processes and methods of mechanical ventilation/exhaust systems, safety and relevant industry standards; developing alternative design schemes based on design brief and customer requirements; and documenting system designs.

The skills and knowledge described in this unit may, in some jurisdictions, require a licence or permit to practice in the workplace subject to regulations for undertaking refrigeration and air conditioning work. Practice in the workplace and during training is also subject to work health and safety (WHS)/occupational health and safety (OHS) regulations.

No other licensing, legislative or certification requirements apply to this unit at the time of publication.

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Prepare to design mechanical ventilation/exhaust systems and select equipment

1.1

WHS/OHS processes and procedures for a given work area are identified, obtained and applied

1.2

WHS/OHS risk control measures and workplace procedures are followed in preparation for the work

1.3

Scope of the proposed mechanical ventilation/exhaust system is determined from the design brief and/or consultations with relevant person/s

1.4

Design development work is planned in accordance with workplace procedures for timelines in consultation with others involved

2

Design mechanical ventilation/exhaust systems and select equipment

2.1

Relevant mechanical ventilation/exhaust processes and methods are applied to the design

2.2

Alternative concepts for design are evaluated in accordance with the design brief

2.3

Safety, functionality and budgetary considerations are incorporated in the design specifications

2.4

System design draft is checked for compliance in accordance with the design brief and relevant industry standards

2.5

System design is documented for submission to relevant person/s for approval

2.6

Unplanned events are dealt with in accordance with problem-solving techniques and workplace procedures

3

Obtain approval for mechanical ventilation/exhaust systems design and equipment selection

3.1

System design is presented to customer and/or relevant person/s in accordance with workplace procedures

3.2

Requests for alterations to the design are negotiated with relevant person/s in accordance with workplace procedures

3.3

Final design is documented and approval obtained from relevant person/s in accordance with workplace procedures

3.4

Quality of work is monitored in accordance with workplace procedures and relevant industry standards

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least one occasion and include:

developing outlines of alternative designs

developing the design within the safety, regulatory, functional requirements and budget limitations

documenting and presenting design effectively

successfully negotiating design alteration requests

obtaining approval for final design

dealing with unplanned events

applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including using risk control measures

designing mechanical ventilation/exhaust systems and select equipment

preparing to design mechanical ventilation/exhaust systems and select equipment.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

exhaust systems design, safe working practices and relevant standards, codes and regulations, including:

relevant codes and regulations:

health and safety

noise

smoke

fire

hazard identification

system types:

applications

application flow charts

system requirements

hazard identification

effluent types and removal

relationship with smoke spill systems

supply air dilution applications

natural ventilation applications

fan assisted exhaust applications

replenishment of exhaust air

system components

duct design:

static, velocity and total pressure

pressure drop

fouling

transitions

elbows

fan position and mounting

noise and noise attenuation

requirements for access and maintenance

system integrity

fan and motor selection:

applications

suitable fan types

motor rating and suitability

balancing the fan duct system

flame proofing

filters and filter selection:

types and applications

capture velocity

outlet design and location:

prevailing winds

position relative to air intakes

weather and bird proofing

cycling/operation control:

applications

code/regulation requirements

monitoring of contaminants

contaminant detection

problem-solving techniques

relevant job safety assessments or risk mitigation processes

relevant WHS/OHS legislated requirements

relevant workplace budget, quality, policies and procedures

relevant workplace documentation.

Assessors must hold credentials specified within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must satisfy the Principles of Assessment and Rules of Evidence and all regulatory requirements included within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must occur in suitable workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated suitable workplace operational situations that replicate workplace conditions.

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Resources for assessment must include access to:

a range of relevant exercises, case studies and/or simulations

relevant and appropriate materials, tools, facilities and equipment currently used in industry

applicable documentation, including workplace procedures, equipment specifications, regulations, codes of practice and operation manuals.

Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.

designing mechanical ventilation and exhaust systems must include at least the following:

two different mechanical ventilation and exhaust systems

Electrotechnology

Refrigeration and air-conditioning