This unit involves the skills and knowledge required to design industrial refrigeration systems and select components.

It includes applying processes and methods of refrigeration and food storage technology, industrial refrigeration system components and piping, safety and relevant industry standards. It also includes following design specifications 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 industrial refrigeration systems

1.1

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

1.2

Scope of the refrigeration system is determined from design specifications

1.3

Safety and systems are identified, obtained and applied in accordance with relevant industry standards

1.4

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

1.5

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

2

Design industrial refrigeration systems

2.1

WHS/OHS risk control measures and procedures for carrying out the work are followed

2.2

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

2.3

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

2.4

Equipment required is selected in accordance with the design specifications and workplace procedures

2.5

Location of components are documented in accordance with workplace procedures and operation of system functions

2.6

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

2.7

System design is documented and submitted to relevant person/s for approval

2.8

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

3

Obtain approval for industrial refrigeration design

3.1

System design is presented and explained to customer and/or relevant person/s

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

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:

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.

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.

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 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

Electrotechnology

Refrigeration and air-conditioning