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Elements and Performance Criteria
Performance Evidence
The candidate must demonstrate the ability to complete the tasks outlined in the elements, performance criteria and foundation skills of this unit, including evidence of the ability to:
apply and monitor gas management plans on at least two occasions, including:applying systems for mine gases, including seam gases and gases from introduced sources, including:methanecarbon dioxideoxides of nitrogenhydrogencarbon monoxidesulphur dioxidehydrogen sulphidehydrocarbons combinationsoxygennitrogenapplying alarm/trigger level systems and action plans, including those for:gas concentration, make and ratiosspontaneous combustion (physical and gaseous)combustion indicatorscondition monitoring for fans (vibration, temperature, current and failures)ventilation devices monitoring hardwarevirgin gas content of coal seamsapplying gas management devices and methods, including:gas drainageinfusionscrubbersautomatic gas detectorstube bundle systemsde-gassing device on auxiliary fans gas monitoring systemsinertisation systemsmonitoring devices, including:barographstube bundlesreal time telemetryportable (hand held) monitoring devicesbag samplesgas chromatography.During the above, the candidate must:locate and apply relevant legislation, documentation, policies and procedures and confirm work activity is compliantimplement the requirements, procedures and techniques for applying and monitoring of gas management plans, including:interpreting, communicating and applying technical informationoperating hand-held monitoring equipmentaccessing, evaluating and applying data from monitoring systems and equipmentcollecting, collating, evaluating and reporting gas dataapplying and interpreting mathematical and scientific theorems/laws relating to gas managementaccessing and interpreting archival and historical gas information related to the mineconducting investigations and preparing reportsidentifying training needs for personnel involvedwork effectively with others to apply and monitor gas management plans that meet the required outcomes, including:organising work activities to meet task requirementscommunicating clearly and concisely with others to receive and clarify work instructionscomplying with reporting requirements and proceduresdetermining coordination requirements throughout work activities.
Knowledge Evidence
The candidate must be able to demonstrate knowledge to complete the tasks outlined in the elements, performance criteria and foundation skills of this unit, including knowledge of:
key legislation required to apply and monitor gas management planskey procedures and documentation required to apply and monitor gas management plans, including those for:developing the requirements and processes of gas management plansapplying risk assessment and management processesmonitoring and maintaining ventilation, including:air quality and quantitymaximum/minimum valuescontrol and distributionflammable gas limitsventilation fangas monitoring inspectionsrecording/reportingidentifying and managing environmental issues, hazards and risksconducting audit and review processes and techniquesimpacts of mining techniques and mine and panel layout on panel gas management impacts of coal characteristics and coal seam gradients on mine gas managementimpacts of differing geological features and conditions on gas management, including:faults, dykes, intrusions and strata deformitiesstrata geology, including: coal seam gradientmoisture contentfriabilityporous features of coal seamsstresses and intrusionsimpact on gas drainagecore sampling techniquesin-seam drilling techniquesimpacts of intersecting holes and hole designapplications, procedures and limitations of panel gas management, including:forcing and exhaustinghomotropal and antitropal (including conjoined use of goaf bleed and back return)auxiliary fanscoursed ventilation (narrow side and wide side)recirculationmachine mounted scrubber systemsducted systemscompressed air venturis bleedersprinciples, components and limitations of gas management plans, including:mine gas types, characteristics, sources, physiological effects and detection methods, including:methanecarbon dioxideoxides of nitrogenhydrogencarbon monoxidesulphur dioxidehydrogen sulphidehydrocarbons combinationsoxygennitrogenalarm/trigger level system and action plan types, including those for:gas concentration/make/ratiosspontaneous combustion (physical and gaseous)combustion indicatorscondition monitoring for fans (vibration/temperature/current/failures)ventilation devices monitoring hardwarevirgin gas content of coal seamsgas management devices and methods, including:gas drainageinfusionscrubbersautomatic gas detectorstube bundle systemsde-gassing device on auxiliary fans gas monitoring systemsinertisation systemsmonitoring devices, including:barographstube bundlesreal time telemetryportable (hand held) monitoring devicesbag samplesgas chromatographymine fires types, ignition sources and potential impacts on gas managementmine explosions types, ignition sources and potential effects on gas managementgas make characteristicspressure change causes and potential impacts on gas managementheat and humidity sources and potential impacts on gas managementimpact of water on ventilationoutburst indicatorsinertisation techniquesgeneral effects of velocity pressure, duct and stopping leakagetypes, characteristics, applications, limitations of equipment, monitoring systems and techniques, including:mine fans gas control devices, including:design criteria and specificationsdistribution/placement criteriade-gassing methods of control, including:bratticeauxiliary fanscompressed air venturissailshurdlesbleedersfixed gas monitoring systemsportable monitoring equipmentcomputer-based systems used for mine gas analysisgas surveys types, frequency and method for conducting, including:pressurequantitytemperaturegasventilation survey types, frequency and method for conducting, including:pressuretemperaturegasalarms and trigger points/levels mine and goaf ventilation systems, including the following ventilation devices:stoppingsovercastsregulatorspreparation sealsventilation doorsbulk headsgoaf sealsfinal sealspressure chambersair lockssling psychrometers, anemometers and velometersgeneral uses and applications of ventilation theorytechniques for identifying individual training needsprinciples, processes and techniques for emergency responses, evacuations and disaster planningtechniques for coordinating and communicating job activities with others.