UEENEEJ120A
Resolve problems in industrial refrigeration systems

1)Scope:1.1) DescriptorThis unit covers solving problems in industrial refrigeration systems. It encompasses working safely and to standards, applying knowledge of the components and operation of industrial refrigeration systems, using effective problem solving techniques and documenting solutions.

Application

2)

This unit is intended to augment previously acquired competencies. It is suitable for employment-based programs under an approved contract of training.


Prerequisites

Prerequisite Unit(s)

4)

Competencies

4.1)

Granting competency in this unit shall be made only after competency in the following unit(s) has/have been confirmed.

UEENEEE102A

Fabricate, assemble and dismantle utilities industry components

UEENEEE105A

Fix and secure electrotechnology equipment

UEENEEJ102A

Prepare and connect refrigerant tubing and fittings

UEENEEJ103A

Establish the basic operating conditions of vapour compression systems

UEENEEJ104A

Establish the basic operating conditions of air conditioning systems

UEENEEJ106A

Install refrigerant pipe work, flow controls and accessories

UEENEEJ107A

Install air conditioning and refrigeration systems, major components and associated equipment

UEENEEJ108A

Recover, pressure test, evacuate, charge and leak test refrigerants

UEENEEJ111A

Diagnose and rectify faults in air conditioning and refrigeration systems and components

UEENEEJ113A

Commission air conditioning and refrigeration systems

UEENEEJ153A

Find and rectify fault motors and associated controls in refrigeration and air conditioning

UEENEEJ170A

Diagnose and rectify faults in air conditioning and refrigeration control systems

UEENEEP013A

Disconnect / reconnect control devices connected to low voltage installation wiring

UEENEEP016A

Locate and rectify faults in low voltage appliances using set procedures

For the full prerequisite chain details for this unit please refer to Table 2 in Volume 1, Part 2

Literacy and numeracy skills

4.2)

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

3

Writing

3

Numeracy

3


Elements and Performance Criteria

ELEMENT

PERFORMANCE CRITERIA

1

Prepare to solve problems in industrial 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 which have not previously been identified are noted and established risk control measures are implemented.

1.4

The nature of the problem is obtained from documentation or from work supervisor to establish the scope of work to be undertaken.

1.5

Advice is sought from the work supervisor to ensure the work is coordinated effectively with others.

1.6

Sources of materials that may be required for the work are accessed in accordance with established procedures.

1.7

Tools, equipment and testing devices needed to carry out the work are obtained and checked for correct operation and safety

2

Solve problems in industrial refrigeration systems

2.1

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

2.2

The need to test or measure live is determined in strict accordance with OHS requirements and when necessary conducted within established safety procedures

2.3

Circuits/machines/plant are checked as being isolated where necessary in strict accordance OHS requirements and procedures

2.4

Problems are approached methodically drawing on operational knowledge of industrial refrigeration systems using observation, measurement, calculations and comparison with normal operating values of system and components.

2.5

Information needed to solve problems is gathered and evaluated against normal operating parameters.

Note:
Examples of information needed to solve problems are system specifications, as-installed drawings, maintenance and service records and measured and calculated values of component operating parameters.

2.6

Problems are dealt with safely and with the approval of an authorised person.

2.7

Problems are solved without damage to apparatus, circuits, the surrounding environment or services and using sustainable energy practices.

3

Complete work and document problem solving 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

Justification for solutions used to solve problems is documented

3.4

Work completion is documented and an appropriate person or persons notified in accordance with established procedures

Required Skills

8) 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 solving problems in industrial refrigeration systems.

All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies.

KS01-EJ120A

Industrial refrigeration systems

Evidence shall show an understanding of industrial refrigeration systems, applying safe working practices and relevant Standards, Codes and Regulations to an extent indicated by the following aspects:

System characteristics, design features, applications, construction, components and typical layout arrangements.

Operating and control principles

Maintenance schedules

System faults and testing methods

Secondary refrigerants and systems

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:

Solve problems in industrial refrigeration systems as described in 8) and including:

A

Using methodical problem solving techniques

B

Accessing relevant information

C

Solving problems effectively

D

Providing written justification for the solutions used

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:

Successful completion of relevant vendor training may be used to contribute to evidence on which competency is deemed. In these cases the alignment of outcomes of vendor training with performance criteria and critical aspects of evidence shall be clearly identified

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 solving problems in industrial refrigeration systems.

Method of assessment

9.4)

This unit shall be assessed by methods given in Volume 1, Part 3 ‘Assessment Guidelines’.

Note:

Competent performance with inherent safe working practices is expected in the Industry to which this unit applies. This requires assessment in a structured environment which is intended primarily for learning/assessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the essential knowledge and skills described in this unit.

Concurrent assessment and relationship with other units

9.5)

For optimisation of training and assessment effort, competency development in this unit may be arranged concurrently with unit:

UEENEEE009B

Comply with scheduled and preventative maintenance program processes


Range Statement

10) 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 solving at least three operational problems related to industrial refrigeration systems.

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.


Employability Skills

5)

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

License to practice

3)

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:

1. Compliance with permits may be required in various jurisdictions and typically relates to the operation of plant, machinery and equipment such as elevating work platforms, powder operated fixing tools, power operated tools, vehicles, road signage and traffic control, lifting equipment. Permits may also be required for some work environments such as confined spaces, working aloft, near live electrical apparatus and site rehabilitation.

2. Compliance may be required in various jurisdictions relating to currency in First Aid, confined space, lifting and risk safety measures.