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Evidence Guide: UEERA0057 - Operate ammonia refrigeration plant

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

UEERA0057 - Operate ammonia refrigeration plant

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare to operate ammonia refrigerant plant

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Ammonia refrigerant, refrigeration system and components on which the work is to be carried out are identified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

WHS/OHS risk control measures, safety data sheets (SDS)/material safety data sheets (MSDS) and workplace procedures are followed in preparation for refrigeration work

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Refrigeration system operating conditions are established from service documentation, supervisor and the application of refrigeration fundamentals

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Operate ammonia refrigeration plant

  1. Refrigeration plant is started up in accordance with workplace procedures, industry standards, codes of practice and regulations
Refrigeration plant is started up in accordance with workplace procedures, industry standards, codes of practice and regulations

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Supervisor or person in charge is advised of system and components performing outside their operating parameters to facilitate remedial action

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Refrigeration plant remedial action is determined and implemented, as required, in accordance with workplace procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Refrigeration service procedures are completed in accordance with workplace procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Daily processing requirements are calculated to predict demand on refrigeration plant

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Oral and written information on the performance of the refrigeration plant is exchanged formally and informally between the operator and supervisor/production team

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Equipment controls are adjusted to prepare refrigeration plant to meet the load

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Action is taken in a proactive way to maintain the performance of the plant

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Demands on plant consumables are calculated to facilitate the ordering of replacements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Strategies are developed to meet demand in the event of refrigeration plant equipment malfunction or breakdown

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Complete work and report on ammonia refrigeration plant operations

  1. Worksite is cleaned and made safe in accordance with workplace procedures
Worksite is cleaned and made safe in accordance with workplace procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Refrigeration plant performance records are maintained and distributed in accordance with workplace procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Required Skills and Knowledge

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 two separate occasions and include:

applying relevant legislative, industry standards and practices

applying relevant work health and safety (WHS)/occupational health and safety (WHS/OHS) requirements and workplace procedures and practices, including using risk control measures

applying sustainable energy principles and practices

completing necessary service documentation

conducting servicing procedures in accordance with the schedule

dealing with unplanned events/situations in accordance with workplace procedures in a manner that minimises risk to personnel and equipment

determining plant operating condition, rectifying faults and defective components in accordance within workplace procedures and guidelines

documenting operating conditions correctly

identifying anhydrous ammonia (R717) refrigerant safety data sheets (SDS)/material safety data sheets (MSDS) and workplace emergency response procedures

identifying the conditions of the refrigerant at various locations in the vapour compression and liquid recirculation system

operating an industrial refrigeration plant using ammonia as the refrigerant

recording measurements

selecting and using appropriate measuring devices correctly

shutting down ammonia refrigerant plant

starting up ammonia refrigerant plant

taking remedial action within workplace emergency response procedures and job role

using calculation methods accurately.

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:

adding refrigerant, draining/adding oil and purging non-condensables

ammonia refrigeration system operation

hazardous goods, segregation, storage and handling

refrigeration plant start-up, shutdown and emergency procedures

refrigeration systems, including:

ammonia refrigeration system types, operating principles, major components, flow controls and ancillary components

operating conditions of ammonia refrigeration systems

refrigeration vapour compression system principles, including:

heat, heat energy (definition and unit of measurement), enthalpy (definition and unit of measurement) and heat transfer

pressure, scale types (imperial, metric and absolute) and their units of measurement, vacuum scales (Pascals and microns), and conversion to/from absolute values and gas laws (Boyles, Charles and Daltons)

refrigerant conditions, saturation temperature, saturated liquid saturated vapour, superheated vapour, sub-cooled liquid and pressure temperature relationships

sensible and latent heat, definition of latent heat and sensible heat (including units of measurement) and measurement devices

temperature and relative humidity, scale types (imperial, metric and absolute) and units of measurement and measurement devices

vapour compression cycle, primary system components, and high and low pressure sides

relevant job safety assessments or risk mitigation processes, including ammonia (R717) refrigerant SDS/MSDS

relevant manufacturer specifications

relevant WHS/OHS legislated requirements

relevant workplace documentation

relevant workplace policies and procedures, including workplace emergency response plan

vapour compression system, including operation and major components.

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.

Operating ammonia refrigeration system conditions must include at least the following:

starting up

determining operating conditions using measurement and calculation methods

repairing components

shutting down the system

checking:

suction

inter-stage and discharge pressures

ambient, evaporator, inter-stage and condensing temperatures

evaporator and condenser temperature differences