UEERA0027 — Design secondary refrigerant systems

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What an assessment for UEERA0027 must cover

33 assessable components: 3 elements (17 performance criteria), 9 performance evidence and 7 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 secondary refrigerant system

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 in consultation 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 secondary refrigerant systems

2.1WHS/OHS risk control measures and workplace procedures for carrying out the work are followed
2.2Relevant secondary 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 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 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 engineering computer applications 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 (OHS) requirements, including using risk controls
designing secondary refrigeration systems
preparing to design secondary refrigeration systems

Knowledge evidence

secondary refrigeration system design, components and piping design, safe working practices and relevant standards, codes and regulations, including: - technical standards, regulations and codes for secondary refrigeration systems: - environmental and safety considerations in the use and disposal of secondary refrigerants: - toxicity and food compatibility - flammability - environmental effects - safe disposal - safety data sheets (SDS)/material safety data sheet (MSDS) samples - registration requirements for transport and on-site use - secondary refrigeration systems design requirements: - applications of secondary refrigeration systems in refrigeration - introduction to secondary refrigeration - applications in industrial refrigeration: cold storage, food processing and climatic test chamber - application in commercial refrigeration: supermarkets and small commercial systems - advantages and disadvantages of secondary refrigerants over the direct use of primary refrigerants - properties, application and limitations of available secondary refrigerants: - general classification of secondary refrigerant types – single phase, volatile and phase change - general types of single phase secondary refrigerants available: glycols, alcohols, brines, hydrocarbons, silicone oils and water - common types of volatile and phase change secondary refrigerants available: CO2 and ice slurries - thermal and transport properties of most widely used single phase secondary refrigerants (MEG, PG, ethyl alcohol, CaCl2, potassium brines) - pump selection for viscous fluids - application concepts and principles: - main and loop circuits, use of variable speed pumps and overflow valves - buffer and storage tanks, benefits and disadvantages - loop temperature control and loop pump selection - control valve options: regulating and on/off, two-way and three-way, mixing and diverting - expansion and contraction of components, compensation for pipe expansion and effect of pipe pre-insulation - expansion and contraction of secondary refrigerant, use of membrane expansion tanks versus open expansion tank - air purging - secondary refrigeration system components and piping: - corrosion and material selection: - materials compatibility table - thermal and other properties of materials in use - pipe material and jointing methods/materials - pumps, impellers and seals - isolation and control valves - heat exchangers - pipe and insulation materials: - metal pipe - plastic pipe - post-installation insulation (in situ foaming, formed insulation and closed cell flexible insulation) - pre-insulated pipe material - vapour barrier – importance and maintenance - heat exchangers: - plate heat exchangers, brazed, welded, semi-welded and gasketed; design considerations in conjunction with primary refrigerant, flooded, direct expansion, and pump circulated primary refrigerant - shell and tube and plate and shell heat exchangers - fan coil units - system control: - primary pump speed and staging control - maintenance of minimum flow and control valve pressure head - overflow valves - secondary loop temperature control - room humidity and temperature control with fan-coil units
problem-solving techniques
relevant job safety assessments or risk mitigation processes
relevant manufacturer specifications
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 UEERA0027

What does an assessment tool for UEERA0027 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for UEERA0027 needs to address all 33 unit components: 3 elements with 17 performance criteria, 9 performance evidence requirements, 7 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 UEERA0027?

Auditori pulls the current release of UEERA0027 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 UEERA0027 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing UEERA0027 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 UEERA0027, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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