Repair and service carbon dioxide refrigeration systems

Formats and tools

Unit Description
Reconstruct the unit from the xml and display it as an HTML page.
Assessment Tool
an assessor resource that builds a framework for writing an assessment tool
Assessment Template
generate a spreadsheet for marking this unit in a classroom environment. Put student names in the top row and check them off as they demonstrate competenece for each of the unit's elements and performance criteria.
Assessment Matrix
a slightly different format than the assessment template. A spreadsheet with unit names, elements and performance criteria in separate columns. Put assessment names in column headings to track which performance criteria each one covers. Good for ensuring that you've covered every one of the performance criteria with your assessment instrument (all assessement tools together).
Wiki Markup
mark up the unit in a wiki markup codes, ready to copy and paste into a wiki page. The output will work in most wikis but is designed to work particularly well as a Wikiversity learning project.
Evidence Guide
create an evidence guide for workplace assessment and RPL applicants
Competency Mapping Template
Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners. A template for developing assessments for a unit, which will help you to create valid, fair and reliable assessments for the unit, ready to give to trainers and students
Observation Checklist
create an observation checklist for workplace assessment and RPL applicants. This is similar to the evidence guide above, but a little shorter and friendlier on your printer. You will also need to create a seperate Assessor Marking Guide for guidelines on gathering evidence and a list of key points for each activity observed using the unit's range statement, required skills and evidence required (see the unit's html page for details)

Self Assessment Survey
A form for students to assess thier current skill levels against each of the unit's performance criteria. Cut and paste into a web document or print and distribute in hard copy.
Moodle Outcomes
Create a csv file of the unit's performance criteria to import into a moodle course as outcomes, ready to associate with each of your assignments. Here's a quick 'how to' for importing these into moodle 2.x
Registered Training Organisations
Trying to find someone to train or assess you? This link lists all the RTOs that are currently registered to deliver UEERA0066, 'Repair and service carbon dioxide refrigeration systems'.
Google Links
links to google searches, with filtering in place to maximise the usefulness of the returned results
Books
Reference books for 'Repair and service carbon dioxide refrigeration systems' on fishpond.com.au. This online store has a huge range of books, pretty reasonable prices, free delivery in Australia *and* they give a small commission to ntisthis.com for every purchase, so go nuts :)


Elements and Performance Criteria

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Prepare to service CO² refrigeration system

1.1

WHS/OHS hazards, risk control methods, relevant standards, codes and legislation are obtained and applied

1.2

Safety hazards not previously identified are assessed, reported and advice on risk control measures sought from work supervisor

1.3

Nature of refrigeration work is obtained from documentation or from work supervisor to determine the scope of refrigeration work to be undertaken

1.4

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

1.5

Sources of materials required for the work are accessed in accordance with workplace and procedures

1.6

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

2

Service and repair CO² refrigeration system

2.1

Measuring refrigeration system operating parameters is conducted in accordance with WHS/OHS requirements and workplace safety procedures

2.2

Inspection and checks are carried out to ensure the refrigeration system or component parts are isolated in accordance with WHS/OHS requirements, industry standards and practices

2.3

Refrigerant is removed from refrigeration system safely in accordance with WHS/OHS requirements, industry standards and practices

2.4

Precautions are taken to prevent damage to components while pressure testing refrigeration system

2.5

Pressure testing is conducted at a pressure compatible with CO² and in accordance with WHS/OHS requirements, industry standards and practices

2.6

Leaks are located and rectified using testing methods appropriate to the refrigeration system and in accordance with industry standards and practices

2.7

Refrigeration system is evacuated to the required level and cleaned of moisture and other contaminants in accordance with industry standards and practices

2.8

Refrigeration system is charged safely with refrigerant grade CO² and compatible lubricants in accordance with industry standards and practices

2.9

Actual and specified range of operating conditions are determined from measured and calculated values as they apply to sub-critical CO² vapour compression and liquid recirculation/cascade systems in accordance with workplace procedures

2.10

Unplanned situations are responded to and discussed with appropriate person/s and documented in accordance with workplace procedures in a manner that minimises risk to personnel and equipment

2.11

Refrigeration operating conditions are determined without damage to apparatus, circuits, the surrounding environment or services using sustainable energy practices

3

Complete work and report on servicing CO² refrigeration system

3.1

Worksite is cleaned and made safe in accordance with workplace procedures

3.2

Contaminated refrigerant and lubricant are dealt with in accordance with legislative/regulatory requirements

3.3

Operation conditions are documented and include identification of any parameters that are not within the specified range for the refrigeration system

3.4

Work supervisor is notified of the completion of work in accordance with established procedures