The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. |
Relevant compliance documentation may include: | legislative, organisation and site requirements and proceduresmanufacturer's guidelines and specifications Australian standardscode of practiceEmployment and workplace relations legislationEqual Employment Opportunity and Disability Discrimination legislation |
Shotfiring requirements may shift briefings, handover details or work orders include: | nature and scope of tasks and achievement targetssite location and layoutlocation and direction of blast holesessential geological informationessential survey informationsite environmental conditionsdetailed timings for the blastdetailed responsibilitiescoordination requirements/issuesidentification of areas of influence sleeping chargesequipment requiredsecurity measures and proceduresmonitoring requirementstype and quantity of explosives and wet or dry holesstemming materialtype and quantity of explosives and accessories initiation methods out of bounds areasoperational conditionscoordination requirements or issueshazards and potential hazardswaste management requirementsenvironmental control requirements worksite inspection requirementsbarricade and signage requirementsobtaining of permits requiredequipment availability and/or requirementsplant or equipment defectstransport arrangements and/or requirementssafe storage requirementspublic relations requirements |
Site inspections may include: | positioning stemmingcleaning upweather checkfencing/signage and access routesmarking/hole identificationinspectionmeasuring holesdewatering holes |
Hazards may include: | chemical energy, including:premature explosiondeterioration of explosivesstored energyworking environment, including:rock stability and ventilationweather conditionsinsufficient illuminationmethanecoal dustNOX gases poor road or rail conditionsstrata conditionsfire/flames/ignition sourcesatmospheric contaminantsdust and fumesnoiseground conditions, including:hot groundscalinglack of ventilationextraneous electricity e.g. static electricity, lightningtipping hazardsdebrisair blast and flylost holesradioactivitywaterequipment and materials, including:faulty explosivesmisfiresdrilling into misfirespremature explosionfaulty vehicle faulty equipmentbroken detonation leadshigh voltage electricityradio frequencies and transmittershot exhaust systemhigh air and water pressureshydraulic oil pressurepeople, including:speedingunauthorised personsthefttrespassersprocesses and procedures, including:back injuriesdrilling in buttslost holes |
Equipment may include: | sirenradiossignsvehicles approved for carrying dangerous goods and explosivesexplosives mixerspumpsplugs (to seal finished holes prior to loading)measuring tapecutting implementsblast monitoring systemsvideo camera |
Support requirements may include | other equipment and their operatorsvehiclespublic and site notification |
Geological and survey data may include: | wet or dry holesstrength of material to be shotstrength of surrounding stratablast pattern planventilation/gas datadeputies reportsdetails of cracking in holes. |
Survey of blast area includes: | locate position, direction and incline of blast holessurvey reports |
Geological data may include: | rock typestructuresfaultsintrusionsweatheringwet and dry holeshot groundreactive groundhot and reactive ground |
Calculations may include: | measurement of depth of holes, temperature of holes, distances, spacingsburdens, resistances, and other relevant blasting parametersaddition, subtraction, multiplication, divisiondeterminations of areas and volumescalculations of delay timings in pattern designsdensity of explosivesweight of explosives per holemaximum delay of the shotMaximum Instantaneous Charge (MIC)stemming requirementsestimation and/or calculation of resistance of circuits, powder factors, holeloadings, exclusion zones, and other relevant factors |
Pattern design may include: | loading and wiring requirementsreference to and consideration of geology, hazardssafety distances and marginsenvironmental licence conditionsgas content of seamstrength of surrounding strataother legislative requirements |
Explosives may include: | high explosiveslow explosivesbulk and packaged free flowing explosivesdeflagrating explosivespermitted explosives wet or dryvariable density |
Accessories may include: | primersdelaysdown linestrunk lineslead-in linesdetonators and detonator assembliesdetonation mechanisms including:bell wire and firing linesdelay mechanismsblasting machines or mains firing equipmentexplosives testerbinding tape fuses and igniter cordsdetonators and detonating cordgas bagsdeckingstemmingstemming equipmentcrack detectorflushing wand hole linerblast monitoring equipmentfiring cables / bell wireexploders and testerselectronic firing equipmentspecialist toolsinitiators |
Inventory control systems may include: | types of explosivesquantities of explosivesshelf lifedistribution records and detailreconciliation reports |
Dispose of explosives may include: | burning by the shotfirers on sitedetonation in a production drill holedetonation in a controlled mannerreturn to supplier or delivery or surrender to an Explosives Inspector for destruction |
Secure blast area sometimes referred to as 'exclusion zones', may be marked or delineated by one or more of the following: | signagewindrowbund wallribbontapewitches hatsropesflags or pegssentriesgates |
Non-conforming conditions may include: | misfiresblockagesbreak throughdeviationundercutground conditionsventilationwater/wet holeshot ground |
Explosion inhibitors may include: | stone dust |
Testing includes | the use of approved testing equipment |
Records and reports may include: | explosive transportation records of consumption and disposal of explosivesmagazine recordsblast designsblast plansblast monitoring incident reports |
Blast monitoring systems may include: | vibration monitorsnoise monitorsgas detectionvisibilitystrata movement. |
Pre-blasting procedures may include: | warningssentriesarea clearance/isolation/barricadinginspection and testing for gasother legislative requirementssafety distances and control/responsibilities |
Blast initiation systems may include: | safety fusedetonating cordnon-electric detonatorelectric detonatorelectronic detonatorremote firing |
Misfires may be caused by: | faulty explosives or accessoriesdamaged or deteriorated explosives or accessoriesimproperly assembled explosives componentsinappropriate or incomplete combinations of componentsoperator error or inexperienceinattention to detail or ignoranceenvironmental influences, e.g. wet weather or poor visibility |
Post-blast coordination may include: | the return of unused explosivesthe return of other equipmentthe withdrawing sentriesremoval of signsturning off safety devicesventilation of areaclearance of noxious gasescollection of environmental monitoring equipmentrecording of environmental monitoring datamaintenance may include:testing of explodersservicing of mixing equipmentmaintenance of hand toolsoperational maintenance of bulk delivery equipment |
Damaged and deteriorated explosives may be identified by: | exudationefflorescencesweatingliquefactionhardeningsofteningdiscolourationcrystallisationstainingdamage to wrappers and carcassesdamage to containersphysical wear and tearkinkingabrasions and cutscrushingloss of identification labels and markingsexposure to the elements |