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Elements and Performance Criteria

1. Prepare to design industrial refrigeration systems
   • WHS/OHS requirements and workplace procedures for a given work area are identified, obtained and applied
2. Scope of the refrigeration system is determined from design specifications
3. Safety and systems are identified, obtained and applied in accordance with relevant industry standards
4. Work supervisor and/or customer/s are consulted to determine functions and parameter of the system required in accordance with design specifications and workplace documentation
5. Design development work is planned in accordance with workplace procedures for timelines in consultation with others involved
6. Design industrial refrigeration systems
   • WHS/OHS risk control measures and procedures for carrying out the work are followed
7. Relevant refrigeration and food storage technology, refrigeration system components and piping are applied to developing the system design in accordance with workplace procedures and relevant industry standards
8. Safety, functionality and budgetary considerations are incorporated in the installation design
9. Equipment required is selected in accordance with the design specifications and workplace procedures
10. Location of components are documented in accordance with workplace procedures and operation of system functions
11. System design draft is checked for compliance in accordance with the design brief and relevant industry standards
12. System design is documented and submitted to relevant person/s for approval
13. Unplanned events are dealt with in accordance with problem-solving techniques and workplace procedures
14. Obtain approval for industrial refrigeration design
    • System design is presented and explained to customer and/or relevant person/s
15. Requests for alterations to the design are negotiated with relevant person/s in accordance with workplace procedures
16. Final design is documented and approval obtained from relevant person/s
17. Quality of work is monitored in accordance with workplace procedures and relevant industry standards

Range Statement

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 industrial refrigeration systems must include at least the following:	two different industrial systems with one of the following: condenser compressor evaporator associated components and controls

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Performance Evidence

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:

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, 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 industrial refrigeration systems preparing to design industrial refrigeration systems.

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Knowledge Evidence

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:

industrial refrigeration systems design and component selection, fundamentals, safe working practices and relevant standards, codes and regulations including: relevant industry practices: AS/NZS 1677 Refrigerating systems SAA refrigeration code AS/NZS 3666 Air-handling and water systems of buildings ozone protection regulations IIAR ammonia data book ANSI/IIAR standards ANSI/ASHRAE mechanical refrigeration and IIAR bulletins and standards (list will be provided by Rama) equipment manufacturer’s specifications and practices operating characteristics: pH charts refrigerating effect, relate back to air and fluid coolers heat of compression, relate back to screw, rotary and reciprocating compressors heat rejected high side of the system, relate back to air cooled, evaporative, and water-cooled condensers variable liquid refrigeration systems and liquid oversee systems required mass flow rate of refrigerant and volume flow rate at various points in system theoretical compressor power required condenser capacity major system components: refrigerants, including R717 and R22 secondary refrigerants component lubricant refrigerant compatibility evaporators condensers and cooling towers compressors expansion valves interconnecting piping and isolating valves pilot-operated valves defrost system components for air, water, recycled water, hot gas and electric methods refrigerant accumulators and liquid pumps 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.

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