Google Links
Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge
Elements and Performance Criteria
Performance Evidence
Evidence is required to be collected that demonstrates a candidate’s competency in this unit. Evidence must be relevant to the roles within this sector’s work operations and satisfy all of the requirements of the performance criteria of this unit and include evidence that the candidate:
locates and applies relevant legislation, documentation, policies and proceduresimplements the procedures and techniques for the safe, effective and efficient implementation of the gas management plan 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 mine including archival and historical informationinterpreting and applying mathematical and scientific theorems / laws related to gasworks with others to undertake and complete the implementation of the gas management plan that meets all of the 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 the required outcomesdemonstrates completion of implementing the gas management plan that safely, effectively and efficiently meets all of the required outcomes on more than one (1) occasion including:conducting investigations and preparing reportsconducting audit and review processes completing site document control requirementsimplementing procedures for the relocation, operation and maintenance of drilling rigs and gas drainage infrastructure
Knowledge Evidence
The candidate must demonstrate knowledge of implementing the gas management plan through:
identifying the principles of ventilation management including mine and goaf ventilation systemsmethods of mine ventilation and their applications / limitations including:exhaust / force, antitropal, homotropal, flank returns, ascensional / decensional, bleeder, Z/U/Y systems and other combinationsmethods of panel gas management and their applications / limitations including: homotropal and antitropal (and in conjunction with these, the use of goaf bleed or back return), auxiliary fans, coursed ventilation (narrow side / wide side), machine mounted scrubber systems, compressed air venturis and bleedersmethods of gas drainage including: their applications / limitations against the 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 systemsmining techniques, and the impact of mine and panel design on gas managementgas drainage on dust generation during mininggeological data and identifying the impact of differing geological features and conditions on gas management and outburst including:faults, dykes, intrusions and strata deformitiesimpacts of intersecting and intersected holes and hole designcomponents/factors to be considered in the gas management plan including:mine gases: the types and their characteristics, sources, physiological effects and methods of detectionmine fires: the types and possible impacts on gas managementmine explosions: the types, ignition sources and possible impacts on gas managementpressure changes: causes and the impacts on gas managementheat / humidity: the sources and factors which may impact on mine gas managementeffects of re-circulationmethods of control of outburstunderground water management techniquesinertisation techniquesequipment, monitoring systems and techniques including:mine fans: fan types, applications and limitationsgas control devices: the types, purposes, design criteria and specifications, distribution / placement criteria and limitationsde-gassing: methods of control – including brattice, auxiliary fans, compressed air venturis, sails, hurdles and bleedersfixed gas monitoring systems: types, uses and limitationsportable monitoring equipment: types, characteristics, uses and limitationscomputer-based systems for mine gas analysisdetermining alarms and trigger points / levels ventilation theory includinggas laws including Charles and Boylenatural ventilation Coward’s TriangleGraham’s RatioEllicott Diagramgas makeTrickett’s Ratioleakagepsychrometry and heatCO/CO2Kirchoff’s lawsemergency response and evacuation/disaster planning processes and techniques