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 procedures manufacturers' guidelines and specifications Australian standards code of practice Employment and workplace relations legislation Equal Employment Opportunity and Disability Discrimination legislation |
Work instructions may come from: | briefings, handovers, plans and work orders and may be written or verbal, formal or informal and may include: nature and scope of tasks and achievement targets site location and layout out of bounds areas operational conditions coordination requirements or issues hazards and potential hazards waste management requirements environmental control requirements worksite inspection requirements barricade and signage requirements obtaining of permits required type and quantity of explosives and accessories equipment availability and/or requirements plant or equipment defects transport arrangements and/or requirements safe storage requirements public relations requirements |
Hazards may include: | chemical energy, including: premature explosion deterioration of explosives stored energy working environment, including: weather conditions insufficient illumination methane coal dust NOX gases poor road or rail conditions strata conditions fire/flames/ignition sources atmospheric contaminants dust and fumes noise ground conditions, including hot ground lack of ventilation extraneous electricity e.g. static electricity, lightning equipment and materials, including: faulty explosives misfires faulty vehicle faulty equipment broken detonation leads high voltage electricity radio frequencies and transmitters hot exhaust system high air and water pressures hydraulic oil pressure people, including those: speeding unauthorised persons committing theft trespassers processes and procedures, including: back injuries drilling in butts lost holes |
Equipment may include: | siren radios signs vehicles approved for carrying dangerous goods and explosives explosives mixers pumps plugs (to seal finished holes prior to loading) measuring tape cutting implements blast monitoring systems video camera |
Support requirements may include | other equipment and their operators vehicles public and site notification |
Survey of blast area includes: | locate position, direction and incline of blast holes survey reports |
Geological data may include: | rock type structures faults intrusions weathering wet and dry holes hot ground reactive ground hot and reactive ground |
Calculations may include: | depth of holes temperatures water problems pattern design types of explosive BCM explosives quantity powder factor |
Explosives may include: | high explosives low explosives bulk and packaged explosives deflagrating explosives permitted explosives wet or dry variable density |
Accessories may include: | primers delays down lines trunk lines lead-in lines detonators and detonator assemblies detonation mechanisms including: bell wire and firing lines delay mechanisms blasting machines or mains firing equipment explosives tester binding tape fuses and igniter cords detonators and detonating cord gas bags decking stemming hole liner blast monitoring equipment firing cables/bell wire exploders and testers electronic firing equipment specialist tools initiators |
Inventory control systems may include: | types and quantities of explosives shelf life distribution records |
Dispose of explosives may include: | burning by the shotfirers on site detonation in a production drill hole detonation in a controlled manner return to supplier or delivery or surrender to an explosives |
Secure shot area may include: | signage windrow bund wall ribbon tape witches hats ropes flags or pegs sentries gates |
Pre-blasting procedures may include: | warnings sentries area clearance |
Initiating blast systems may include: | safety fuse detonating cord non-electric detonator electric detonator electronic detonator remote firing |
Misfires may be caused by: | faulty explosives or accessories damaged or deteriorated explosives or accessories improperly assembled explosives components inappropriate or incomplete combinations of components operator error or inexperience inattention to detail or ignorance environmental influences, e.g. wet weather or poor visibility |
Post-blast coordination may include: | the return of unused explosives the return of other equipment the withdrawing sentries collection of environmental monitoring equipment recording of environmental monitoring data maintenance, which may include: testing of exploders servicing of mixing equipment maintenance of hand tools operational maintenance of bulk delivery equipment |