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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:
implement gas management plans on at least two occasions, including:conducting investigations and preparing reportsconducting audit and review processes completing site document control requirementsimplementing procedures for relocation, operation and maintenance of drilling rigs and gas drainage infrastructure.During the above, the candidate must:locate and apply relevant legislation, documentation, policies and procedures and confirm work activity is compliantapply procedures and techniques for implementing gas management plans, including:operating hand held monitoring equipmentcollecting, collating and evaluating gas management dataaccessing, evaluating and applying data from monitoring systems and equipmentapplying risk management processes and techniquesaccessing and analysing gas information related to the mineinterpreting and applying mathematical and scientific theorems/laws related to gaswork with others to implement the gas management plan in a manner that meets required outcomes, including:communicating clearly and concisely with others to receive and clarify work instructions, and convey work progressidentifying and implementing gas management training requirements, programs, systems and proceduresidentifying the relevant information and scope of the work necessary to meet required outcomes.
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 implement gas management planskey procedures and documentation required to implement gas management plansprinciples of ventilation management, including mine and goaf ventilation systemsmethods of mine ventilation and their applications and limitations, including:exhaust/forceantitropalhomotropalflank returnsascensional/decensionalbleederZ/U/Y systemsmethods of panel gas management and their applications and limitations, including:homotropal and antitropal, including in conjunction with use of goaf bleed and back returnauxiliary fanscoursed ventilation (narrow side/wide side)machine mounted scrubber systemscompressed air venturisbleedersmethods of gas drainage, including: applications and limitations against mine design, mine and panel ventilation systems, systems of mining and current and future mine developmentcoal characteristics and coal seam gradients on mine gas management plansmining techniques and impact of mine and panel design on gas managementgas drainage on airborne contaminant generation during miningtechniques for applying geological data and identifying impact of differing geological features and conditions on gas management and outburst, including:faultsdykesintrusionsstrata deformitiesimpacts of intersecting and intersected holes and hole design components and factors relating to gas management plans, including:types of mine gases, including: characteristics under varying circumstancessourcesphysiological effectsmethods of detectiontypes of mine fires and possible impacts on gas managementtypes of mine explosions, including ignition sources and possible impacts on gas managementcauses of pressure changes and impacts on gas managementsources of heat and humidity and factors which may impact mine gas managementeffects of re-circulationoutburst control methods underground water management techniquesinertisation techniquestypes, characteristics, applications, limitations of equipment, monitoring systems and techniques, including:mine fansgas 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 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 and levelsmine and goaf ventilation systems, including the following ventilation devices:stoppingsovercastsregulatorspreparation sealsventilation doorsbulk headsgoaf sealsfinal sealspressure chambersair lockssling psychrometers, anemometers and velometerstechniques for recording and reporting monitoring system dataventilation theory, including:gas laws, including Charles’s law and Boyle’s lawnatural ventilation Coward’s triangleGraham’s ratioEllicott Diagramgas makeTrickett’s ratioleakagepsychrometry and heatCO and CO2 ratiosKirchoff’s lawstechniques for identifying individual training needstechniques for auditing and reviewing gas management systems and processesprinciples, processes and techniques for emergency response, evacuation and disaster planningtechniques for leading and coordinating work activities with others.