Current through Register Vol. 50, No. 6, December 1, 2023
RELATES TO: KRS 351.350, 351.990
NECESSITY, FUNCTION, AND CONFORMITY: KRS 351.335 requires the
Department for Natural Resources to promulgate rules and administrative
regulations concerning the manufacture, transportation, sale, storage, or use
of explosives and unassembled components of explosives, and the maintenance of
such explosives which has a direct bearing on safety to life and property. This
administrative regulation effects the provisions of that law.
Section 1. Blasting in Excavation Work under
Compressed Air.
(1) Detonators and explosives
shall not be stored or kept in tunnels, shafts, or caissons. Detonators and
explosives for each round shall be taken directly from the magazines to the
blasting zone and immediately loaded. Detonators and explosives left over after
loading a round shall be removed from the working chambers before connecting
wires are connected.
(2) When
detonators or explosives are brought into an air lock, no employee except the
powder-man, blaster, lock tender and the employees necessary for carrying,
shall be permitted to enter the air lock. No other materials, supplies, or
equipment shall be locked through with the explosives.
(3) Detonators and explosives shall be taken
separately into pressure working chambers.
(4) The blaster or powderman shall be
responsible for the receipt, unloading, storage, and on-site transportation of
explosives and detonators.
(5) All
metal pipes, rails, air locks, and steel tunnel lining shall be electrically
bonded together and grounded at or near the portal or shaft, and such pipes and
rails shall be crossbonded together at not less than 1,000-foot intervals
throughout the length of the tunnel. In addition, each low air supply pipe
shall be grounded at its delivery end.
(6) The explosives suitable for use in wet
holes shall be water resistant and shall be in fume Class I.
(7) When tunnel excavation in rock face is
approaching mixed face, and when tunnel excavation is in mixed face, blasting
shall be performed with light charges and with light burden on each hole.
Advanced drilling shall be performed as tunnel excavation in rock face
approaches mixed face, to determine the general nature and extent of rock cover
and the remaining distance ahead to soft ground as excavation
advances.
2 Ky.R. 617; 3 Ky.R. 323;
eff. 9-1-1976; TAm eff. 8-9-2007; Crt eff.
6-27-2018.
STATUTORY AUTHORITY: KRS 351.335
