Blast to specification in accordance with approved procedures and practices.
This standard comprises the following:
1 Complete and check the initiation circuit
2 Clear and secure the danger zone
3 Sound warning and fire the blast
4 Inspect blast site after detonation
5 Collate feedback and record findings of the blast operations
This activity is likely to be undertaken by someone whose work role involves explosives work activities. This includes blasting personnel.
1 Complete and check the initiation circuit
P1 the ignition system for the explosive is connected accurately in conformity with the blast specification
P2 connections are protected against adverse environmental conditions, premature ignition and mechanical damage
P3 operational safety procedures are fully implemented whilst preparing the initiation circuit and connecting the ignition system in conformity with approved procedures and practices
P4 the ignition system and initiation sequences are checked thoroughly in accordance with operational and organizational rules and procedures and relevant legislation
P5 faults in the ignition system are accurately identified and appropriate action is taken to rectify them
P6 any faults in the ignition system which cannot be rectified are reported promptly as misfires to the appropriate person
P7 problems and conditions outside the responsibility of the candidate are referred to an authorized person
P8 work is carried out to approved procedures and practices and in compliance with statutory requirements
2 Clear and secure the danger zone
P9 the specified danger zone is cleared and secured effectively in compliance with operational and organizational rules and procedures and the blast specification
P10 sentries are posted correctly in compliance with the blasting specification, operational and organizational rules and procedures
P11 warning systems are checked and confirmed to be operable and working
P12 the firing station is safely located in accordance with the blasting specification
P13 clear notification is given to public of intention to fire the explosive
P14 operational safety precautions are confirmed and maintained in place for the firing of the explosive
P15 problems and conditions outside the responsibility of the candidate are referred to an authorized person
P16 work is carried out to approved procedures and practices and in compliance with statutory requirements
3 Sound the warning and fire the blast
P17 warning and communication systems are confirmed in place in accordance with the operational safety procedures
P18 security of danger zone is confirmed with the sentries via the warning systems
P19 position for firing the explosive is taken at the firing station in accordance with the blasting specification
P20 security of exploder is maintained in compliance with relevant explosives regulations, operational and organizational rules and procedures
P21 the explosive is fired when all safety precautions have been taken and verified
P22 problems and conditions outside the responsibility of the candidate are referred to an authorized person
P23 work is carried out to approved procedures and practices and in compliance with statutory requirements.
1 Complete and check the initiation circuit
K1 health, safety and environmental and other statutory legislation, regulations and safe working practices and procedures governing explosives and their implications for your area of work
K2 types of detonating devices and explosives used
K3 delayed detonators and how the delay is created
K4 effects of adverse environmental and site conditions on system performance and possible premature detonation
K5 how to identify and deal with faults that cannot be rectified
K6 types of approved circuit testers
K7 initiation sequences for blasting patterns and the possible effects on the time delay period between individual charges
K8 how to check that the exploder is appropriately calibrated
K9 blast patterns
K10 circuit testing for electrical initiation
K11 types of initiation and premature ignitions
K12 types and uses of shotfiring equipment
2 Clear and secure the danger zone
K13 health, safety and environmental and other statutory legislation, regulations and safe working practices and procedures governing explosives and their implications for your area of work
K14 dangers from flyrock
K15 causes of flyrock
K16 how to access and correctly interpret the relevant guidance
K17 warning systems
K18 public roads and rights of way
K19 powers and duties of sentries
3 Sound the warning blast
K20 health, safety and environmental and other statutory legislation, regulations and safe working practices and procedures governing explosives and their implications for your area of work
K21 the issues likely to arise from the blast operation
K22 types of communication systems
4 Inspect blast site after detonation
K23 health, safety and environmental and other statutory legislation, regulations and safe working practices and procedures governing explosives and their implications for your area of work
K24 hazards associated with misfires and unexploded charges
K25 recognition of misfires
K26 reasons for post blast slippage of ground and its effects
K27 dangerous effects of fumes created by blasting K28 effects of adverse environmental and site conditions