sec.70Blasting procedures

sec.70 Blasting procedures

If blasting is carried out at a mine, the site senior executive for the mine must ensure the mine has written procedures for the blasting. The procedures must provide for the following matters— ensuring equipment used for charging and firing is maintained in a good operating condition; cleaning blast holes before charging; blast times; warning and guarding persons against entering an unsafe area during a blast; removing persons who may be injured by a blast to a safe place before firing takes place; the ability for each person involved in firing the blast to reach a safe position, by walking at normal walking pace, before the blasting happens; firing a blast from a position that is safe from the effects of the blast; deciding when it is safe to re-enter the blasted area; examining the blasted area and blast hole remnants safely; communicating, from 1 shift to another, information about charging and blasted locations. The procedures must provide for the following additional matters, as are appropriate, having regard to the nature, size and complexity of the blasting— keeping air blast, air overpressure, dust generation, flyrock, ground vibration and noise within acceptable limits; keeping the effect on ground stability to as low as practicable; keeping blast times within worker and community expectations for blasting; finalising blast design and firing sequence; recording the results of blast monitoring at the mine, including the monitoring of ground vibration. s 70 amd 2019 SL No. 140 s 21 sch 1 (sec.70-ssec.1) If blasting is carried out at a mine, the site senior executive for the mine must ensure the mine has written procedures for the blasting. (sec.70-ssec.2) The procedures must provide for the following matters— ensuring equipment used for charging and firing is maintained in a good operating condition; cleaning blast holes before charging; blast times; warning and guarding persons against entering an unsafe area during a blast; removing persons who may be injured by a blast to a safe place before firing takes place; the ability for each person involved in firing the blast to reach a safe position, by walking at normal walking pace, before the blasting happens; firing a blast from a position that is safe from the effects of the blast; deciding when it is safe to re-enter the blasted area; examining the blasted area and blast hole remnants safely; communicating, from 1 shift to another, information about charging and blasted locations. (sec.70-ssec.3) The procedures must provide for the following additional matters, as are appropriate, having regard to the nature, size and complexity of the blasting— keeping air blast, air overpressure, dust generation, flyrock, ground vibration and noise within acceptable limits; keeping the effect on ground stability to as low as practicable; keeping blast times within worker and community expectations for blasting; finalising blast design and firing sequence; recording the results of blast monitoring at the mine, including the monitoring of ground vibration.