5607.18 Misfires.
FC § 5607.18
Where a misfire is suspected, all initiating circuits shall be traced and a search made for unexploded charges. Where a misfire is found, the blaster shall immediately implement safeguards in compliance with the following requirements: 1. Cordon off and otherwise secure the blast area from entry.
2.Report the misfire to the department in accordance with FC 5603.5.
3.No other work shall be performed except that necessary to remove the hazard of the misfire.
4.No attempt shall be made to extract explosives from any charged or misfired hole; a new primer shall be loaded and the hole reblasted, if such action does not present a hazard. If refiring of the misfired hole presents a hazard, the explosives may be removed by washing out with water or blown out with air.
5.No drilling, digging, or picking shall be allowed until all missed holes have been detonated or the blaster determines that work can proceed, but no drilling shall be conducted into a previously fired hole.
6.All misfires and the disposition of explosives involved shall be recorded on forms prescribed by the commissioner.
