Ohio Revised Code
Chapter 1567 | Mine Equipment; Safety Provisions
Section 1567.18 | Rules for Use of Alternating Current.

Effective: June 14, 2000
Latest Legislation: House Bill 601 - 123rd General Assembly
When alternating current is used underground in mines, the following rules apply:
(A) On all low voltage circuits all wires shall be protected by a switch and an automatic overload circuit breaker on each wire of the circuit, except that fuses may be substituted for circuit breakers in the case of lighting circuits and in the case of power circuits transmitting twenty-five kilowatts or less. All wires shall be insulated with a standard insulation and shall be placed between trolley wire and rib or on the rib as close to the roof as practicable and securely supported upon hangers efficiently insulated. Additional switches shall be installed in all branch circuits. All points of connection shall be properly protected so that persons cannot inadvertently come in contact therewith. No voltage in excess of two hundred sixty volts measured at the nearest switchboard shall be used in mobile machinery except with the written approval of the chief of the division of mineral resources management.
(B) When high voltage circuits are used, all wires shall be provided with a suitable ammeter and protected by an oil-break switch on each wire of the circuit, such switch to be equipped with an automatic overload trip. All wires shall be insulated with a standard insulation at least fifty per cent higher than the standard for the commercial rated voltage between conductors and ground and installed in conduit or be lead covered with an additional covering of steel armor wire or steel tape, and all wire shall be subject to carrying capacity according to the rules of the national board of fire underwriters. This cable may be installed either in or on the bottom or in the location prescribed for direct current feed lines, except no further insulation shall be required than specified in this section.
(C) No voltage in excess of eight thousand volts between conductor and ground may be used to operate semipermanent and permanent machinery except with the written approval of the chief. All installations shall be made in accordance with the accepted electrical standards and practices, especially with regard to protective switches, insulation materials, clearance danger signs, and gates. The location, ventilation, and protection against fire hazard and personal injury shall be subject to the approval of the chief.
(D) The division of mineral resources management shall accept standard electrical practices in regard to the underground electrical installations and operation of alternating current equipment, but may augment the same to provide additional safeguards. When exercising this authority, the division shall give due consideration to the safety experience in regard to similar installations and the similar operation thereof under similar conditions.
(E) The mine foreperson shall have posted at the mine opening, and in all permanent substations therein, a copy of instructions as to the method of resuscitation of persons suffering from electric shock. All persons working about such stations, or with electric machines, shall familiarize themselves with such rules.
No operator of a mine shall refuse or neglect to comply with this section.

Structure Ohio Revised Code

Ohio Revised Code

Title 15 | Conservation of Natural Resources

Chapter 1567 | Mine Equipment; Safety Provisions

Section 1567.01 | Chapter Does Not Apply to Chapter 1514 Activities.

Section 1567.02 | Use of Present Machinery Lawful - Replacement of Appliances and Machinery.

Section 1567.03 | Prohibited Acts.

Section 1567.04 | Machine Runners and Helpers.

Section 1567.05 | Trespassing.

Section 1567.06 | Examination of Mine Generating Firedamp - Posting or Report.

Section 1567.07 | Entry Beyond Danger Signal.

Section 1567.08 | Book of Reports of Mine Condition and Air Measurements.

Section 1567.09 | Ventilation of Mines.

Section 1567.10 | Ventilating Fans.

Section 1567.11 | Booster and Blower Fans.

Section 1567.12 | Accident to Ventilating Fan.

Section 1567.13 | Supervision of Ventilating Apparatus and Airways.

Section 1567.14 | Entry Into Mine After Interruption of Ventilation.

Section 1567.15 | Closing of Ventilating Doors.

Section 1567.16 | Electrical System - Prohibited Activities.

Section 1567.17 | Rules for Use of Direct Current.

Section 1567.18 | Rules for Use of Alternating Current.

Section 1567.19 | Grounding of Machines and Armored Cable Using Alternating Current.

Section 1567.20 | Electrical Equipment to Be Grounded.

Section 1567.21 | Employment of Shot Firers.

Section 1567.22 | Use of Black Powder.

Section 1567.23 | Handling Explosives in Mines.

Section 1567.24 | Conveyance of Explosives.

Section 1567.25 | Explosives to Be Protected From Contact With Fire.

Section 1567.26 | Explosives and Tools on Cages or Stairways.

Section 1567.27 | Use of Squibs and Fuses - Tamping.

Section 1567.30 | Firing of Shots - Appointed Times.

Section 1567.31 | Drill Holes.

Section 1567.32 | Misfired Shots.

Section 1567.33 | Examination After Each Blast.

Section 1567.34 | Solid Shooting.

Section 1567.35 | Use of Gasoline, Naphtha, Kerosene, Fuel Oil or Gas Engine.

Section 1567.36 | Fire Extinguishers.

Section 1567.38 | Use of Locomotive and Haulage Equipment.

Section 1567.39 | Lights and Signals for Locomotives and Cars - Riding on Locomotive - Protection Against Runaway or Self-Propelled Equipment.

Section 1567.40 | Riding on Haulage Trips.

Section 1567.41 | Operation of Trolley Ahead of Locomotive.

Section 1567.42 | Riding on Locomotive or Cars.

Section 1567.43 | Signal Light.

Section 1567.44 | Handling Cars.

Section 1567.45 | Limitation on Number of Persons in Cage or Elevator - Hoisting Equipment Safety Examination.

Section 1567.46 | Windlass Required.

Section 1567.47 | Qualifications of Persons in Charge of Hoisting Engine.

Section 1567.48 | Safe Appliances for Ingress and Egress in Shaft.

Section 1567.49 | Lowering and Hoisting of Persons by Vertical Shaft.

Section 1567.50 | Regulations for Speaking Tube, Cages, and Safety Gate.

Section 1567.51 | Signal Code.

Section 1567.52 | Additions to Code of Signals - Posting.

Section 1567.53 | Emergency Signal in Vertical Shaft.

Section 1567.54 | Adequate Fire Protection - Firefighting Equipment.

Section 1567.55 | Report of Coal Seam Fire - Covering of Exposed Surface to Prevent Fire.

Section 1567.57 | Two-Way Communication System.

Section 1567.58 | Lights in Mines.

Section 1567.59 | Flame Safety Lamps.

Section 1567.60 | Recording Pressure Gauge.

Section 1567.61 | First Aid and Emergency Medical Equipment - Report of Arrangements for Emergency Medical Assistance and Transportation.

Section 1567.62 | Obstruction of Airway.

Section 1567.63 | Use of Traveling Ways - Loitering Prohibited.

Section 1567.64 | Operator to Provide Tag Lines or Tie-Off Lines for Miners.

Section 1567.65 | Prohibition Against Smoking or Carrying Smoking Materials.

Section 1567.66 | Prohibition Against Intoxicants.

Section 1567.67 | Protective Clothing.

Section 1567.68 | Safety Provisions for Machinery and Equipment.

Section 1567.681 | Fire Detection Devices Required on Conveyor Belts.

Section 1567.69 | Longwall Mining Plans or Revisions - Contents.

Section 1567.70 | Plan for Recovery of Longwall Roof Support - Approval by Chief.

Section 1567.71 | Two-Way Communication Facilities.

Section 1567.72 | De-Energizing Electrical Power on Longwall Working Face Conveyor.

Section 1567.73 | Installation of Methane Monitors.

Section 1567.74 | Safety Requirements for Longwall Working Face.

Section 1567.75 | Cutting and Welding.

Section 1567.76 | Maintenance of Hydraulic Lines and Roof Support Units.

Section 1567.77 | First Aid Equipment.

Section 1567.78 | Maintaining Accessible Tailgate Travel Route.

Section 1567.79 | Instruction on Hazards.

Section 1567.99 | Penalty.