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Elements and Performance Criteria

  1. Prepare to repair renewable energy apparatus.
  2. Repair renewable energy apparatus.
  3. Complete and report repair work activities.

Required Skills

This describes the essential skills and knowledge and their level required for this unit

Evidence must show that knowledge has been acquired of safe working practices and carrying out basic repairs to renewable energy apparatus by replacement of components

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

KSEKA

Introduction to renewable energy technologies

Evidence shall show an understanding of renewable energy principles and technologies to the extent indicated by the following aspects

T Major nontechnical issues encompassing

impact of economic social environmental and political issues on the use of renewable energy technologies

how each of the nontechnical issues impact on the application of a selected renewable energy technology

T Energy services and demand encompassing

definition of the terms energy power energy efficiency end use energy primary energy embodied energy

calculation relating to energy power and time with the appropriate number and time with the appropriate number of significant figures

units and symbols for energy power time and temperature using standard SI units and prefixes

conversion of energy and power quantities from one unit to another using conversion tables

the two laws that apply to any energy conversion process

efficiency of a simple energy conversion process

energy services required by a domestic dwelling

power and energy consumption of individual appliances and systems using appropriate meters or other methods

calculation of the end use and primary energy required for these energy services

selection of the most appropriate energy source for each of these services

justification in terms of environmental economic social and political constraints

selection of appropriate energy efficient appliances and technologies

T The solar resource encompassing

definition of the terms irradiation latitude solar constant direct and diffuse radiation azimuth and altitude angles irradiance solar window tilt angle solstice equinox

units and symbol for irradiation and irradiance and the conversion of one unit to another using conversion tables

measurement of solar irradiance with a solarimeter

solar radiation data tables and contour maps

position of the sun for a given date time and latitude using a sun path diagram

times when an obstacle will shade a given collector

how radiation varies throughout the year on the surface of a collector which is either fixed singleaxis tracking or doubleaxis tracking

appropriate tilt angles for fixed and seasonallyadjustable collectors at a given latitude and given application

calculation of the effect of singleaxis tracking and doubleaxis tracking on collected radiation using radiation data tables

T Solar thermal systems encompassing

definition of the terms conduction convection radiation collector heat loss coefficient conductivity specific hear solar fraction

components for a solar thermal system including collector storage reticulation and control

solar collector types suitable for low medium and high temperature applications

different types of domestic solar hot water SWH systems

how the components of thermosiphon and pumped storage systems operate

heat loss mechanisms in collectors

stratification in storage tanks

backup energy systems

control and protection strategies

solar fraction of a domestic SHW system with the use of table or nomograms

T Energy efficient building design encompassing

definition of the terms thermal comfort passive system active system aspect of the site orientation of the building thermal mass

the climate factors which affect building design

relationship between thermal comfort and climate

relationship between the seasonal variation of the suns path and the heat gain of the building elements roof walls windows floor

effect of the thermal conductivity of building materials on heat flows to and from the building

use of thermal mass in reducing temperature variations within the building

use of ventilation

thermal performance of a dwelling using both indoor and outdoor hourly temperature measurements over the period of at least one day

effect of insulation glazing orientation shading devices thermal mass and ventilation on the thermal performance of a building

an active solar system which could be used in a dwelling to complement passive design features in extreme climates

aspects of an existing dwelling that contribute to or detract from thermal performance

T Photovoltaic arrays encompassing

definition of the terms photovoltaic PV cell module series parallel array maximum power point MPP nominal operating cell temperature NOCT short circuit current ISC open Circuit voltage VOC IV curve current at maximum power point IMP voltage at maximum power point VMP

calculations relating to voltage current and power with the appropriate number of significant figures and using standard SI units and prefixes

types of commercially available PV modules their efficiency and typical applications

IV curve for a typical PV module and label the approximate position of MPP and values of ISC VOC IMP and VMP

effect of irradiance and temperature on ISC VOC IMP and VMP

function of blocking and bypass diodes

current and voltage of a single module to produce the IV characteristic curve

major specification criteria for a PV module

size and configuration of a PV array for a given load and system voltage using tables or nomograms

T Wind energy resources encompassing

definition of the terms kinetic energy specific wind power vertical wind speed profile surface roughness temperature inversion layer cut in vC rated vR and furling vF wind speeds rated power PR power coefficient cP output coefficient cO tip speed ratio

definition of the terms: kinetic energy, specific wind power, vertical wind speed profile, surface roughness, temperature inversion layer, cut in (vC), rated (vR) and furling (vF) wind
speeds, rated power (PR), power co-efficient (cP), output co-efficient (cO), tip speed ratio.

units and symbols for wind speed specific wind power and air density

large scale wind patterns over the Australian continent their causes and the effect of local terrain on wind speed direction and turbulence

specific wind power for given wind speeds

wind speed at different heights above ground level

the mean wind speed based on wind speed frequency distribution data in the form of a histogram

suitable minimum tower height for a Wind

energy conversion System WECS sited downwind from an obstacle

isovent maps

types of windmeasuring instruments and the minimum requirements for assessing wind energy at a given site

measurement of wind speed and direction

characteristics of horizontal axis and vertical axis upwind and downwind lift and drag propelled wind turbines

power vs wind speed curve for a typical WECS showing vC vR vF and PR

major specification criteria for a WECS

sizing a WECS for a given load efficiency and annual mean wind speed using tables or a nomogram

T Microhydro system basis encompassing

definition of the terms flow rate gross or static head potential energy net or dynamic head hydraulic efficiency MHS efficiency equivalent pipe length reaction turbine impulse turbine

units and symbols for flow rate head gravitational constant

methods each assessing flow rate and head

measurement of stream flow rate and head

assessment from contour maps

different MHS in terms of their physical and operating characteristics

major specification criteria for an MHS for electricity generation

suitable type and size of MHS for a given load efficiency available flow rate and net head using tables or a nomogram

T Energy storage encompassing

methods of energy storage

energy density of the energy storage methods above by mass and volume

define the following terms in relation to batteries nominal voltage cell primary and secondary cells battery charge and discharge rate amp hour capacity watt hour capacity state of charge SOC depth of discharge DOD specific gravity SG watt hour and amp hour efficiency cycle life

major features of common types of batteries suitable for standalone power systems

state of charge of a leadacid battery through measurement of specific gravity or battery voltage using safe working practices

T Stand alone power system basis encompassing

dc subsystem efficiency

block diagram of a typical SPS

function of each SPS system component

typical efficiencies of each component

major characteristics of different types of commercially available regulators inverters and battery chargers

T Biomass encompassing

definition of the terms biogas producer gas biofuels feedstock gross and net calorific values

biofuels and their specific energy contents

method of production of one of these five biofuels including source of raw materialfeedstock conversion process yield

applications for each of the biofuels

assessment of the biomass resource required to meet a particular energy service eg cooking hot water space heat transport process heat electricity

social political and economic impact of large scale use of selected biomass resources

Evidence Required

This provides essential advice for assessment of the unit and must be read in conjunction with the performance criteria and the range statement of the unit and the Training Package Assessment Guidelines

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

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 industrypreferred 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 issues inherent in working with electricity electrical equipment gas or any other hazardous substancematerial present a challenge for those determining competence Sources of evidence need to be rich in nature to minimise error in judgment

Activities associated with normal everyday work have a bearing on the decision as to how much and how detailed 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

Before the critical aspects of evidence are considered all prerequisites must be met

Evidence for competence in this unit must be considered holistically Each element and associated performance criteria must be demonstrated on at least two occasions in accordance with the Assessment Guidelines UEE Evidence must 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 must 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

Carry out basic repairs to renewable energy apparatus by replacement of components as described in and including

A

Following manufactures service instructions for access to components

B

Removing at least three different types of components specified in the work instructions

C

Replacing components to manufacturer requirements

D

Reassembling the apparatus correctly

E

Testing apparatus operation

F

Dealing with unplanned events by drawing on essential knowledge and skills to provide appropriate solutions incorporated in a 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 must be clearly identified

Context of and specific resources for assessment

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 learningassessment 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

The resources used for assessment should reflect current industry practices in relation to carrying out basic repairs to renewable energy apparatus by replacement of components

Method of assessment

This unit shall be assessed by methods given in Volume Part 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 learningassessment 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

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

UEENEEEA

UEENEEE102A

Fabricate assemble and dismantle utilities industry components

UEENEEEA

UEENEEE104A

Solve problems in dc circuits

UEENEEEA

UEENEEE107A

Use drawings diagrams schedules standards codes and specifications

The critical aspects of occupational health and safety covered in unit UEENEEEA and other discipline specific occupational health and safety units shall be incorporated in relation to this unit

The critical aspects of occupational health and safety covered in unit UEENEEE101A and other discipline specific occupational health and safety units shall be incorporated in relation to this unit.


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 relation to carrying out basic repairs renewable energy apparatus limited to replacement or repair of components in which the fault has been previously established. This must include at least two different renewable energy apparatus in which three different types of components are faulty one of which is mechanical.

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.