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Mining Contract: Resource Identification for Improvement of Electromagnetic Compatibility (EMC) in Underground Coal Mines
Keywords: Emission controls Equipment operation Radios
This page is archived for historical purposes and is no longer being maintained or updated.
Contract #
NAStart Date
3/25/2013End Date
5/31/2013Research Concept
The coal mining industry would benefit from the identification of commonly used practices and standards for ensuring electromagnetic compatibility (EMC) appropriate for the underground mine environment, and the identification of potential commercial resources for improvement of EMC in underground coal mines.Topic Areas
Electrical Safety
Emergency Communications and Tracking
Contract Status & Impact
This contract is complete. To receive a copy of the final report, send a request to mining@cdc.gov.
Electrical and electronics equipment emit electromagnetic energy. These emissions can be either intentional, as in a radio with an attached antenna, or unintentional, as a byproduct of non-radio related operation, such as a digital clock harmonic radiating away from a computer. Unintentional emissions are controlled to protect the ability of radios to receive intentionally generated signals, such as broadcast programs from commercially licensed stations, or signals sent from one handheld radio to another. Intentional emissions are not controlled by electromagnetic interference (EMI) standards, but may be controlled by licensing agencies to promote proper use and sharing of the electromagnetic spectrum. Byproducts of intentional emissions (harmonics and spurs accompanying desired transmissions) are controlled by the Federal Communications Commission.
Due to the increased use of radio-based systems and microprocessor controlled equipment in coal mines, the Office of Mine Safety and Health Research (OMSHR) is interested in identifying available practices, standards, and resources that can be adopted to reduce the potential for electromagnetic interference (EMI). Research performed under this contract identified possible EMI requirements for coal mining equipment to ensure proper operation of equipment used in mines with a view towards maximizing mine safety, and also identified potential commercial resources for improvement of EMC in underground coal mines.
The final report generated from this contract includes an outline of a process to conduct the testing and analysis aimed at determining the proper EMI requirements for coal mining equipment. A fundamental assumption made throughout this report is that the coal mining industry can greatly improve EMC through the use of existing standards, with minimal need for the development of custom EMI requirements. Requirements presently used in various industries and disciplines are examined as to their utility for coal mining equipment. The specifications and standards examined include CISPR, IEEE, ISO, and EN61000.
See Also
A CART Technique to Adjust Production from Longwall Coal Operations under Ventilation Constraints
An In-Situ Diffusion Parameter for the Pittsburgh and Pocahontas No. 3 Coalbeds
Mutagenicity of Diesel Exhaust Particles from an Engine with Differing Exhaust After Treatments
Programmable Electronic Mining Systems: Best Practice Recommendations (In Nine Parts): Part 2: 2.1 System Safety
Programmable Electronic Mining Systems: Best Practice Recommendations (In Nine Parts): Part 8: 6.0 Safety File Guidance
Programmable Electronic Mining Systems: Best Practice Recommendations (In Nine Parts): Part 9: 7.0 Independent Functional Safety Assessment Guidance
Propagation of UHF Radio Waves in Limestone Room and Pillar Mines
Radio 101: Operating Two-Way Radios Every Day and in Emergencies
Theory on the Propagation of UHF Radio Waves in Coal Mine Tunnels
Upper Extremity Joint Moment and Force Predictions When Using a Joystick Control
Page last reviewed: July 18, 2016
Page last updated: April 29, 2016
Content source: National Institute for Occupational Safety and Health, Mining Program
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