UEERA0015 — Design carbon dioxide refrigerated systems
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What an assessment for UEERA0015 must cover
72 assessable components: 3 elements (17 performance criteria), 9 performance evidence and 46 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.
Elements & performance criteria
1 Prepare to design CO² refrigeration systems
- 1.1WHS/OHS requirements and workplace procedures for a given work area are identified, obtained and applied
- 1.2Scope of the refrigeration system is determined from design specifications and/or consultations with relevant person/s
- 1.3Safety and system are identified, obtained and applied in accordance with relevant industry standards
- 1.4Work supervisor and/or customer/s are consulted to determine functions and parameters of the system required in accordance with design specifications and workplace documentation
- 1.5Design development work is planned in accordance with workplace procedures for timelines in consultation with others involved
2 Design CO² refrigeration systems
- 2.1WHS/OHS risk control measures and workplace procedures for carrying out the work are followed
- 2.2Relevant CO² refrigeration system analysis, components and piping are applied to developing the system design in accordance with workplace procedures and relevant industry standards
- 2.3Safety, functionality and budgetary considerations are incorporated in the installation specifications
- 2.4Equipment required is selected in accordance with the design specifications and workplace procedures
- 2.5Location of components is documented in accordance workplace procedures and operation of system functions
- 2.6System design draft is checked for compliance in accordance with the design brief and relevant industry standards
- 2.7System design is documented for submission to relevant person/s for approval
- 2.8Unplanned events are dealt with in accordance with problem-solving techniques and workplace procedures
3 Obtain approval for design
- 3.1System design is presented to customer and/or relevant person/s in accordance with workplace procedures
- 3.2Requests for alterations to the design are negotiated with relevant person/s in accordance with workplace procedures
- 3.3Final design is documented and approval obtained from relevant person/s in accordance with workplace procedures
- 3.4Quality of work is monitored in accordance with workplace procedures and relevant industry standards
Performance evidence
- understanding required operating functions and parameters from the design specification
- developing the design within the safety, regulatory and functional requirements and budget limitations
- documenting and presenting design effectively
- negotiating design alteration requests successfully
- obtaining approval for final design
- dealing with unplanned events
- applying relevant work health and safety (WHS)/occupational health and safety (WHS/OHS) requirements, including using risk control measures
- designing carbon dioxide (CO²) refrigeration systems
- preparing to design CO² refrigeration systems
Knowledge evidence
- CO² refrigeration system design requirements, components and piping design requirements, safe working practices and relevant standards, codes and regulations, including:
- technical standards, regulations and codes for carbon dioxide refrigeration systems:
- standard philosophy and format
- standards, regulations and codes that apply to CO2 refrigeration systems
- equipment manufacturer’s specifications
- CO² refrigeration system design requirements:
- possible areas of applications of CO2 refrigeration systems:
- mobile air conditioner
- heat pump water heater
- commercial refrigeration
- thermodynamic properties of CO2:
- CO2 phase diagram
- CO2 properties tables and chart
- conventional refrigeration cycle versus CO2 refrigeration cycle:
- T-s and pH diagram representations
- isentropic efficiency
- volumetric efficiency
- types of CO2 refrigeration system configurations:
- sub-critical operation
- trans-critical operation
- cascade systems
- performance analysis of CO2 refrigeration systems
- sub-critical cycle
- trans-critical cycle
- cascade systems
- CO² refrigeration system components and piping:
- design preliminaries:
- system operating parameters
- project specifications
- equipment selection criteria
- selection tables, charts and catalogues
- heat exchanger selection:
- selection of evaporators
- selection of condensers
- selection of coolers
- compressor selection
- liquid expansion devices selection
- system load balance point
- refrigeration line design and sizing
- automatic controls
- safety devices
- 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.
Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.
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Questions about assessing UEERA0015
What does an assessment tool for UEERA0015 need to cover?
To satisfy the Principles of Assessment and Rules of Evidence, an assessment for UEERA0015 needs to address all 72 unit components: 3 elements with 17 performance criteria, 9 performance evidence requirements, 46 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.
How does Auditori generate an assessment tool for UEERA0015?
Auditori pulls the current release of UEERA0015 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.
Is the first assessment tool really free?
Yes. Every new account includes one free credit — enough to generate the complete assessment tool for UEERA0015 — with no card and no subscription required. After that it's pay-as-you-go per unit.
Can I check my existing UEERA0015 assessment instead of generating a new one?
Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of UEERA0015, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.
Related units
- UEERA0001 — Analyse the operation of HVAC air and hydronic systems
- UEERA0002 — Analyse the psychrometric performance of HVAC/R systems
- UEERA0003 — Analyse the thermodynamic performance of HVAC/R systems
- UEERA0004 — Analyse vibration and noise in refrigeration and air conditioning systems
- UEERA0005 — Apply safety awareness and legal requirements for ammonia refrigerant
- UEERA0006 — Apply safety awareness and legal requirements for carbon dioxide refrigerant
- UEERA0007 — Apply safety awareness and legal requirements for flammable refrigerants
- UEERA0008 — Audit HVAC/R control systems for compliance with regulations and standards
- UEERA0009 — Audit energy use for commercial HVAC/R systems
- UEERA0010 — Commission complex heating, ventilation and air conditioning (HVAC) systems
- UEERA0011 — Commission complex refrigeration systems and equipment
- UEERA0012 — Commission complex refrigeration/air conditioning control systems
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