Specific knowledge is required to achieve the Performance Criteria of this unit, particularly for its application in the various circumstances in which this unit may be used. This includes knowledge of the following as required to manage, operate and maintain the mine ventilation system: legislative and statutory requirements for ventilation including air quality, maximum values, control and distribution, flammable gas limits, ventilation fans, gas monitoring, dust limits and inspections and recording/reporting methods of mine ventilation and their applications/limitations including exhaust/force, antitropal, homotropal, flank returns, ascensional/decensional, bleeder, ZUY systems and other combinations methods of panel ventilation 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 venturi and bleeders impact of mining techniques and mine and panel design on ventilation inertisation techniques and applications including pressure swing absorption, natural oxidation, evaporative and pumped liquefied inert gas, seam gas, exhaust gases (Thomlinson boiler or jet engine) and water impact of differing geological features and conditions on ventilation including faults, dykes, intrusions and strata deformities impact of coal characteristics and coal seam gradients on mine ventilation design effects of ventilation on the spontaneous combustion risk mine gases; the types and their characteristics, sources, physiological effects and methods of detection dust and other particulate matter; the types, sources, physical and physiological effect, and control/mitigation methods mine fires; the types, sources of ignition, possible effects on the ventilation circuit and prevention/control/mitigation methods mine explosions; the types, ignition sources, possible effects on the ventilation circuits and prevention/control/mitigation methods pressure changes; causes, the impacts on the ventilation system, responses (to include the causes and effects of natural ventilation and re-circulation) heat, humidity; the sources and factors which may impact on mine ventilation and personnel mine roadways and shafts; their design parameters and impact on mine ventilation mine fans; fan laws, fan types, performance characteristics, configurations, applications and limitations ventilation control devices; the types, purposes, design criteria and specifications, distribution/placement criteria and limitations de-gassing; methods of control - including brattice, auxiliary fans, compressed air venturis, sails, hurdles and bleeders ventilation networks and individual circuit design criteria, specifications and design processes fixed ventilation monitoring systems types, uses/limitations , design criteria, specifications and design processes portable monitoring equipment, types, uses/limitations, design criteria and specifications the use of computer modelling and simulation techniques and applications relevant to mine ventilation planning; their functions, capabilities, advantages and limitations computer-based systems for mine environment analysis ventilation management plan development requirements and processes ventilation surveys; the types, frequency and method for conducting including pressure/quantity/temperature and gas/dust processes and techniques for determining alarms and trigger points/levels audit and review processes and techniques emergency response and disaster planning process and techniques analytical and interpretive processes for gas mixtures and flammability including coward triangle, Ellicott diagram, gas make calculations and post explosion gases applied ventilation theory including: Atkinson's equation methods of determining frictional resistance frictional resistance values for mine airways and ducts psychrometry and heat gas laws including Charles, Boyle and Dalton air density calculations natural ventilation pressures static velocity total pressures and shock loss leakage duct leakage determination of mine resistance curves combining system resistance and fan curves regulator and equivalent orifice calculation determination of fan operating/duty points Kirchoff's law |