Rule 4123:1-9-02 | Coke plants.
(A) Warning signs and devices.
All approaches leading to rooms or buildings where coal dust or flammable gas may accumulate shall bear warning signs forbidding smoking or open flames.
(2) Quenching car locomotives, pushers and larry cars (charging cars) shall be equipped with audible and visual warning devices.
(B) Electrical equipment.
Approved electrical equipment shall be used in coal handling and by-product operations.
(C) Gas-carrying lines.
(1) A line carrying blast furnace gas shall be purged before opening or entering.
(2) A line carrying coke gas shall be purged before opening or entering.