13 N.C. Admin. Code 07F .0712 - FIRING THE BLAST
Additions and amendments to 29 CFR 1926.909 Firing the Blast apply throughout the Rules in this Section as follows:
(a) The Blaster-in-Charge shall establish a
code of blasting signals and all blast site employees shall familiarize
themselves with and conform to the code. As a minimum, the code shall:
(1) contain audible pre-blast and audible all
clear signals, and
(2) contain an
emergency method for guards, flagmen, or other authorized employees to signal
"do not fire", and
(3) prohibit
sounding of the all clear signal until the blaster has checked the blast site
for misfires. Table U-1 is an example of a code of blasting signals that would
meet these requirements. Further, the Blaster-in-Charge shall require the
placement of Danger signs and posting of the blasting signals when personnel
not associated with the blasting operation are within the blast area.
(b) Before a blast is fired, the
Blaster-in-Charge shall make certain that all surplus explosives are in an area
meeting the ATF explosive storage requirements contained in 27 CFR 55 and that
all persons are at a safe distance, or under sufficient cover.
(c) Flagmen shall be safely stationed on
highways which pass through the blast area so as to stop traffic during
blasting.
(d) The Blaster-in-Charge
shall fix the time of blasting.
(e)
Before firing an underground blast, warning shall be given, and all possible
entries into the blast area, and any entrances to any working place where a
drift, raise, or other opening is about to hole through, shall be carefully
guarded to prevent entry into the area. The Blaster-in-Charge shall make sure
that all surplus employees have been removed from the blast area and that all
personnel are out of the blast area.
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