Application
4) | |
This unit is intended to augment formally acquired competencies. It is suitable for employment-based programs under an approved contract of training or institutional based delivery. It applies to any formal recognition for this standard at the aligned AQF 4 level. |
Prerequisites
Prerequisite Unit(s) | 2) | |
2.1) Competencies | ||
Granting competency in this unit shall be made only after competency in the following unit(s) has/have been confirmed. | ||
Diagnose and rectify faults in complex air conditioning/ refrigeration systems | ||
Verify functionality and compliance of refrigeration and air conditioning installations | ||
Apply Occupational Health and Safety regulations, codes and practices in the workplace | ||
Fabricate, assemble and dismantle utilities industry components | ||
Solve problems in extra-low voltage single path circuits | ||
Fix and secure electrotechnology equipment | ||
Use drawings, diagrams, schedules, standards, codes and specifications | ||
Document and apply measures to control OHS risks associated with electrotechnology work | ||
Prepare and connect refrigerant tubing and fittings | ||
Establish the basic operating conditions of vapour compression systems | ||
Establish the basic operating conditions of air conditioning systems | ||
Install refrigerant pipe work, flow controls and accessories | ||
Install air conditioning and refrigeration systems, major components and associated equipment | ||
Recover, pressure test, evacuate, charge and leak test refrigerants | ||
Select refrigerant piping, accessories and associated controls | ||
Diagnose and rectify faults in air conditioning and refrigeration systems and components | ||
Commission air conditioning and refrigeration systems | ||
Find and rectify faults motors and associated controls in refrigeration and air conditioning systems | ||
Diagnose and rectify faults in air conditioning and refrigeration control systems | ||
Solve problems in low voltage refrigeration circuits | ||
Disconnect / reconnect composite appliances connected to low voltage installation wiring | ||
Locate and rectify faults in low voltage composite appliances using set procedures | ||
Attach cords and plugs to electrical equipment for connection to a single phase 230 Volt supply | ||
Attach cords, cables and plugs to electrical equipment for connection to 1000 Va.c. or 1500 Vd.c. supply |
Elements and Performance Criteria
ELEMENT | PERFORMANCE CRITERIA | ||
1 | Prepare to commission complex refrigeration systems. | 1.1 | OHS procedures for a given work area are identified, identified, obtained and understood |
1.2 | Established OHS risk control measures and procedures are followed in preparation for the work. | ||
1.3 | Safety hazards that have not previously been identified are noted and established risk control measures are implemented. | ||
1.4 | Appropriate personnel are consulted to ensure the work is coordinated effectively with others involved on the work site. | ||
1.5 | System operating parameters are identified by reviewing system specifications and component technical data. | ||
1.6 | Tools, equipment and testing devices needed for the work are obtained in accordance with established procedures and checked for correct operation and safety. | ||
1.7 | Preparatory work is checked to ensure no damage has occurred and complies with requirements. | ||
1.8 | The need to test or measure live is determined in strict accordance with OHS requirements and when necessary conducted within established safety procedures. | ||
1.9 | Circuits are checked as being isolated where necessary in strict accordance OHS requirements and procedures. | ||
2 | Commission complex refrigeration systems. | 2.1 | OHS risk control measures and procedures for carrying out the work are followed. |
2.2 | Testing/measuring devices are connected and set up in accordance with requirements for a particular system. | ||
2.3 | Measurements and adjustments are made to equipment components and controls to provide optimum system performance in accordance with system specifications and regulatory requirements. | ||
2.4 | Decisions for dealing with unexpected situations are made from discussions with appropriate persons and job specifications and requirements. | ||
2.5 | Methods for dealing with unexpected situations are selected on the basis of safety and specified work outcomes. | ||
2.6 | Commissioning is carried out efficiently without waste of materials or damage to apparatus, the surrounding environment or services and using sustainable energy principles. | ||
3 | Completion and report commissioning activities. | 3.1 | OHS risk control work completion measures and procedures are followed. |
3.2 | Work site is cleaned and made safe in accordance with established procedures. | ||
3.3 | Adjustment settings are documented and an appropriate person or persons notified in accordance with established procedures. |
Required Skills
7) This describes the essential skills and knowledge and their level, required for this unit. |
Evidence shall show that knowledge has been acquired of safe working practices and commissioning complex refrigeration systems. All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01_EJ125A Complex refrigeration systems commissioning Evidence shall show an understanding of complex refrigeration systems commissioning, applying safe working practices and relevant Standards, Codes and Regulations to an extent indicated by the following aspects: T1 Commissioning fundamentals building specifications/requirements/responsibilities design and as installed drawings building codes local government regulations design conditions pre – commissioning checks calibration of instruments commissioning procedures data collection and recording, documentation reporting procedures T2 Air Systems (excluding air balancing) instruments air flow pressure temperature fan testing leakage testing system capacity calculations T3 Hydronic systems hydronic instruments fluid flow pumps: pump curves and system curves pump testing capacity calculations T4 Refrigeration Systems AS1677 Code of practice pressure testing evacuation charging control setting commissioning reports system performance and capacity T5 Plant and equipment controls heat exchangers chillers boilers cooling towers |
Evidence Required
9) The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria, Required Skills and Knowledge, the Range Statement and the Assessment Guidelines for this Training Package. . The Evidence Guide forms an integral part of this Unit. It must be used in conjunction with all parts of this unit and performed in accordance with the Assessment Guidelines of this Training Package. | ||||
Overview of Assessment | 9.1) Longitudinal competency development approaches to assessment, such as Profiling, require data to be reliably gathered in a form that can be consistently interpreted over time. This approach is best utilised in Apprenticeship programs and reduces assessment intervention. It is the industry-preferred model for apprenticeships. However, where summative (or final) assessment is used it is to include the application of the competency in the normal work environment or, at a minimum, the application of the competency in a realistically simulated work environment. In some circumstances, assessment in part or full can occur outside the workplace. However, it must be in accordance with industry and regulatory policy. Methods chosen for a particular assessment will be influenced by various factors. These include the extent of the assessment, the most effective locations for the assessment activities to take place, access to physical resources, additional safety measures that may be required and the critical nature of the competencies being assessed. The critical safety nature of working with electricity, electrical equipment, gas or any other hazardous substance/material carries risk in deeming a person competent. Sources of evidence need to be 'rich' in nature to minimise error in judgment. Activities associated with normal everyday work influence decisions about how/how much the data gathered will contribute to its 'richness'. Some skills are more critical to safety and operational requirements while the same skills may be more or less frequently practised. These points are raised for the assessors to consider when choosing an assessment method and developing assessment instruments. Sample assessment instruments are included for Assessors in the Assessment Guidelines of this Training Package. | |||
Critical aspects of evidence required to demonstrate competency in this unit | 9.2) Before the critical aspects of evidence are considered all prerequisites must be met. | |||
Evidence for competence in this unit shall be considered holistically. Each Element and associated performance criteria shall be demonstrated on at least two occasions in accordance with the 'Assessment Guidelines - UEE07 '. Evidence shall also comprise: A representative body of work performance demonstrated within the timeframes typically expected of the discipline, work function and industrial environment. In particular this shall incorporate evidence that shows a candidate is able to: | ||||
Implement Occupational Health and Safety workplace procedures and practices including the use of risk control measures as specified in the performance criteria and range statement Apply sustainable energy principles and practices as specified in the performance criteria and range statement Demonstrate an understanding of the essential knowledge and associated skills as described in this unit. It may be required by some jurisdictions that RTOs provide a percentile graded result for the purpose of regulatory or licensing requirements. Demonstrate an appropriate level of skills enabling employment Conduct work observing the relevant Anti Discrimination legislation, regulations, polices and workplace procedures | ||||
Demonstrated consistent performance across a representative range of contexts from the prescribed items below: | ||||
Commission complex refrigeration systems as described in 8) and including: | ||||
A | Identifying system operating parameters | |||
B | Measuring and adjusting system components and controls to provide optimum system performance | |||
C | Ensuring system operates within regulatory requirements | |||
D | Documenting adjustment settings with established procedures | |||
E | Dealing with unplanned events by drawing on essential knowledge and skills to provide appropriate solutions incorporated in the holistic assessment with the above listed items | |||
Note: | ||||
Context of and specific resources for assessment | 9.3) This unit should be assessed as it relates to normal work practice using procedures, information and resources typical of a workplace. This should include: OHS policy and work procedures and instructions. Suitable work environment, facilities, equipment and materials to undertake actual work as prescribed by this unit. These should be part of the formal learning/assessment environment. Note: Where simulation is considered a suitable strategy for assessment, conditions must be authentic and as far as possible reproduce and replicate the workplace and be consistent with the approved industry simulation policy. | |||
Evidence should show demonstrated competency in commissioning complex refrigeration systems. | ||||
Method of assessment | 9.4) This unit shall be assessed by methods given in Volume 1, Part 3 'Assessment Guidelines'. Note: | |||
Concurrent assessment and relationship with other units | 9.5) | |||
There are no concurrent assessment recommendations for this unit. |
Range Statement
8) This relates to the unit as a whole providing the range of contexts and conditions to which the performance criteria apply. It allows for different work environments and situations that will affect performance. |
This unit must be demonstrated in relation to commissioning two different types of complex refrigeration systems, incorporating multiple major components (i.e. compressors, condenser or evaporators) circuits or systems and associated components and controls. |
Generic terms used throughout this Vocational Standard shall be regarded as part of the Range Statement in which competency is demonstrated. The definition of these and other terms that apply are given in Volume 2, Part 2.1. |
Sectors
Not Applicable
Competency Field
2.2) Literacy and numeracy skills Participants are best equipped to achieve competency in this unit if they have reading, writing and numeracy skills indicated by the following scales. Description of each scale is given in Volume 2, Part 3 'Literacy and Numeracy' | |||||
Reading | 4 | Writing | 4 | Numeracy | 4 |
Employability Skills
3) This unit contains Employability Skills The required outcomes described in this unit of competency contain applicable facets of Employability Skills. The Employability Skills Summary of the qualification in which this unit of competency is packaged will assist in identifying Employability Skill requirements. |
Licensing Information
1.2) License to practice |
The skills and knowledge described in this unit require a license to practice in the workplace where plant and equipment operate at voltage above 50 V a.c. or 120 V d.c. In some States/Territories a licence is required to practise this unit in the workplace subject to regulations for undertaking refrigeration and air conditioning work and in particular working with refrigerants. Practice in workplace and during training is also subject to regulations directly related to occupational health and safety and where applicable contracts of training such as apprenticeships. Note: |