Section 5607 Blasting
Where blasting is being conducted in the vicinity of utility lines or rights-of-way, the blaster shall notify the appropriate representatives of the utilities not less than 24 hours in advance of blasting, specifying the location and intended time of such blasting. Verbal notices shall be confirmed with written notice.
Exception: In an emergency situation, the time limit shall not apply where approved.
The blaster shall supervise the connecting of the blastholes and the connection of the loadline to the power source or initiation point. Connections shall be made progressively from the blasthole back to the initiation point.
Blasting lead lines shall remain shunted (shorted) and shall not be connected to the blasting machine or other source of current until the blast is to be fired.
After the blast, the following procedures shall be observed.
- Persons shall not return to the blast area until allowed to do so by the blaster in charge.
- The blaster shall allow sufficient time for smoke and fumes to dissipate and for dust to settle before returning to or approaching the blast area.
- The blaster shall inspect the entire blast site for misfires before allowing other personnel to return to the blast area.