7 CCR 1101-9-6-2 - Drilling and Loading
(A) Procedures
that permit safe and efficient loading shall be established before the loading
of explosive materials is started.
(B) All boreholes shall be sufficiently large
to admit freely the insertion of the cartridges of explosives.
(C) Tamping shall be done only with wooden
rods or with approved plastic tamping poles without exposed metal parts, but
non-sparking metal connectors may be used for jointed poles. Violent tamping
shall be avoided. The primer shall never be tamped.
(D) No boreholes shall be loaded except those
to be fired in the next round of blasting. After loading, all remaining
explosive materials shall be immediately returned to magazines or day
boxes.
(E) No explosives or
blasting agents shall be left unattended on a blast site.
(F) Drilling shall not be started until all
remaining butts of old boreholes are examined for unexploded charges, and if
any are found, they shall be refired or removed before work proceeds.
(G) No person shall be allowed to deepen
boreholes that have contained explosives or blasting agents.
(H) Drilling shall not be conducted where
there is a danger of intersecting a loaded borehole or misfired explosive
material.
(I) Equipment, machines
and all tools not used for loading explosives into boreholes shall be removed
from the immediate location of boreholes being loaded with explosives.
Equipment shall not be operated within 50 feet of loaded boreholes except when
equipment is needed to add cover or mats.
(J) Loaded boreholes shall not be left
unattended.
(K) The Type I
permittee shall maintain an accurate, up-to-date record of explosives, blasting
agents and all blasting supplies used in a blast and shall keep an accurate
running inventory of all explosives and blasting agents stored on the
operation.
(L) Pneumatic loading of
blasting agents into blast holes primed with electric detonators or other
static-sensitive initiation systems shall conform to the following
requirements:
(1) A positive grounding device
for the equipment shall be used to prevent the accumulation of static
electricity.
(2) A semi-conductive
hose shall be used.
(3) A qualified
person shall evaluate all systems to assure that they will adequately dissipate
static under potential field conditions.
(M) Primers shall be made up immediately
prior to placing the primer in the borehole.
(N) Dropping or pushing a primer or any
explosive with a lighted fuse attached into a borehole is prohibited.
(O) Detonators shall not be loaded into a hot
hole or exposed to temperatures above 150° F unless specifically designed
and approved by the manufacturer for higher temperatures.
Notes
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No prior version found.