Range of VariablesThe Range of Variables defines the different contexts, work environments and parameters governing the performance of this competency standard. The variables chosen in training and assessment will need to reflect local industry and regional contexts |
Who is permitted to use explosives? | Only licensed persons. |
Which licence is required for electrical detonation? | Varies according to state legislation. |
What hazards to electrical firing may be included? | Thunderstorms, both high and low voltage power transmission, electric fencing, conductive earths, radio and TV transmitters, mobile phones, two way radios, electrostatic hazards and other stray currents. |
Under which procedures can explosives be used? | Only under the approved procedures prescribed in relevant standards issued by the Standards Association of Australia. |
In which situation might control devices not be required? | Blasting mats or other control devices may not be required in a field situation. |
How should surplus, unserviceable or defective explosives or components be destroyed? | Through detonating, burning or dissolving in water. |
Where would precautions and methods relating to use of explosives be found? | AS 2187, Part 2 1993 which includes operations prior to charging, charging, preparation for firing, firing, misfires and preparation of primers. |
In what form should ammonium nitrate be? | Porous prill. |
What items may be used for mixing? | Items may include but are not restricted to plastic buckets, bottles and scoops. |
For what purpose should a colouring agent be used? | To differentiate mixed explosive from unmixed ingredients and to aid in the determination of uniformity of the mix. |
How should excess mix be stored? | It must be packed and labelled in accordance with current state legislation. |
For what purpose are colouring agents used? | To gauge uniformity visually. |
Which explosives may be included in those for disposal? | Those considered surplus or unsafe for transport, storage or use. |
For more information on contexts, environment and variables for training and assessment refer to the Sector Booklet. |
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