12 CRR-NY 61-4.8NY-CRR
12 CRR-NY 61-4.8
12 CRR-NY 61-4.8
61-4.8 Standards of conduct for blasting operations.
(a) Handling, placing and detonating explosives.
(1) All blasting operations shall be performed under the supervision of a blaster-in-charge.
(2) No individuals other than the blaster-in-charge, certified blasters and other authorized blasting assistants shall be allowed in the blasting site after the loading of explosives has begun until such time as the all clear is given by the blaster-in-charge after the detonation.
(3) The work of handling and placing explosives in preparation for a blast shall be performed only by:
(i) the blaster-in-charge; or
(ii) a certified blaster acting within the scope of the classification for which they are certified; or
(iii) authorized blasting assistants under the direct supervision of the certified blaster or the blaster-in-charge.
(4) The detonation of explosives shall be under the control of the blaster-in-charge. The detonation of explosives may be performed by a designated authorized blasting assistant under the direction of the blaster-in-charge.
(b) Charging.
In charging holes for blasting, only non sparking material shall be used for tamping and loading.
(c) Fuse requirements.
Any fuse which varies more than 10 percent from an average speed when burned unconfined in the open at sea level in three-foot lengths shall not be used. Any fuse that burns faster than 90 seconds per three-foot length with more than an allowable variation of 10 percent, when burned unconfined in the open at sea level, shall not be used. Any 40 second/foot fuse length less than 36 inches shall not be used. This shall not apply to log-splitting wedges, the fuses for which may be not less than 12 inches in length. Fuses shall be cut and capped in safe, dry locations posted with "NO SMOKING" signs.
(d) Notice of blast.
The blaster-in-charge shall be responsible for making sure that timely audible notice of every blast is given to every person in danger thereof, and shall not allow any blast to be detonated until all persons have been removed to safe locations.
(e) Maximum A.C. voltage of electric blast.
The A.C. voltage used to detonate any blast shall not exceed 440 volts.
(f) Blasting operations during electrical storms.
All blasting operations and any handling of explosives shall be stopped immediately upon the approach of an electrical storm, and all persons shall immediately retire to a place of safety.
(g) Blasting near radio frequency energy sources.
All blasting operations conducted in areas that could be affected by radio frequency radiation hazards from either permanent or mobile sources shall be conducted in compliance with IME No. 20.
(h) Assembly of blasting caps.
Blasting caps shall be crimped to fuses only with implements designed for that specific purpose.
(i) Permanent electric blasting lines.
Permanent electric blasting lines shall be properly supported, insulated and kept in good repair.
(j) Branch circuits.
If branch circuits are used when blasts are fired from power circuits, safety switches located at safe distances from the blast areas shall be provided in addition to the main blasting switch.
(k) Blasting switches.
Blasting switches shall be locked in the open position except when closed to fire and blast. Lead wires shall not be connected to the blasting switch until the shot is ready to be fired, except for permanent electric blasting lines.
(l) Electric circuits.
Electric circuits from blasting switches to the blast area shall not be grounded.
(m) Detonating-cord knots.
All detonating-cord knots shall be tight and all connections shall be kept at right angles to the trunk lines.
(n) Monitoring blasts.
Blasts shall be monitored for ground vibration and airblast as required by article 8 of IME no. 3. When seismographs are used they shall be properly calibrated as recommended by the manufacturer and monitored by a qualified operator trained by the manufacturer of the device or individuals certified by the manufacturer.
(o) Blasting mat.
Wherever any person may be endangered from the material being blasted, such material shall be covered on all exposed sides with a strong woven matting of wire rope not less than one-half inch in diameter, or other equivalent covering which will be effective in preventing particles from being projected into the air by the blast.
(p) Public utilities.
Explosives shall not be detonated in violation of the requirements of subdivisions 1 and 2 of section 322-a of the General Business Law of New York State relating to operations carried out in the vicinity of public utility facilities.
12 CRR-NY 61-4.8
Current through March 15, 2022
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