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- Hazard prevention and control:
- Grounding
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- Short circuit protection
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- Overload protection
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- Ground monitoring systems
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- Electrical insulation
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Results 1 - 9 of 9
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Concerns about the present derating factors used for reeled trailing cables prompted researchers at the NIOSH to determine new derating factors for reeled coal mining trailing cables.
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1/1/2002 - Peer reviewed journal articlesNIOSH investigated how the starting of induction motors may cause nuisance tripping of short-circuit protection on coal mine power systems.
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3/13/2024 - Contracts and cooperative agreementsA contract with the Missouri University of Science & Technology to investigate real-time ground movement monitoring for improved safety near large excavations using distributed fiber optic sensing.
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1/1/2000 - Peer reviewed journal articlesNIOSH has devised a passive means to detect overheating insulators on direct current systems.
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8/1/1998 - Technology NewsNIOSH designed a passive device to detect overheating insulators on mine trolley/track haulageways.
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1/1/1993 - Reports of InvestigationsThe U.S. Bureau of Mines investigated the performance of portable power cables under transient conditions. This research had a twofold purpose: (1) to define the thermal characteristics of electrically overloaded trailing cables, and (2) to conceptuali...
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1/1/1992 - Information CircularsA U.S. Bureau of Mines investigation of the early detection of insulation failure in squirrel cage induction motors using a sophisticated empirical data-modeling technique based on values calculated from a motor's voltage and current phasors.
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10/1/1978 - Conference papersElectric shocks are a serious problem in the mining environment. Electrical accidents, resulting in personal injury, due to improper or complete lack of grounding of electrically operated mining machines, form a significant percentage of the overall ele...
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1/1/1978 - Guides and manuals, Information CircularsThis report describes a method for designing and constructing ground beds that has been developed under the sponsorship of the Bureau of Mines. Results of a bed constructed at the Bureau of Mines mine car roadway are presented.
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Content source: National Institute for Occupational Safety and Health, Mining Program