NDLI: Arc flash evaluation and hazard mitigation for the Colorado School of Mines electrical power distribution system

Content Provider	IEEE Xplore Digital Library
Author	Larkin, C.A. Ferrera, J. Kohl, R. Lamb, C. Margetts, P. Ammerman, R.F.
Copyright Year	2009
Description	Author affiliation: Division of Engineering, Colorado School of Mines, Golden, CO 80401 USA (Larkin, C.A.; Ferrera, J.; Kohl, R.; Lamb, C.; Margetts, P.; Ammerman, R.F.)
Abstract	An arc flash is the release of electrical energy during an arcing fault, which dissipates in the form of heat energy, intense light, blast pressure, severe sound waves, electromagnetic radiation, and toxic gases. The thermal energy, concussive forces, and flying debris can pose serious threats to the safety of personnel working in close proximity to electrical equipment. In order to identify the severity of an arc flash hazard at the Colorado School of Mines (CSM), an arc flash hazard evaluation of the electrical power distribution system has been conducted. The arc flash analysis has been performed in accordance with NFPA 70E: Standard for Electrical Safety in the Workplace, and IEEE 1584: Guide for Performing Arc Flash Hazard Calculations. The analysis of the existing system configuration has revealed that many locations on the CSM campus are in the “dangerous” arc flash hazard category, and consequently work cannot be performed on energized equipment at these locations. With an understanding of the thermal energy available, design recommendations, including the selection and coordination of fuses and circuit breakers, were investigated to reduce the severity of arc flash events. Implementation of the selected protective devices can decrease the incident energy levels of CSM locations and eliminate any instances of “dangerous” hazard risk categories. Other hazard mitigation considerations include increasing the working distance, and utilizing arc suppression blankets while performing maintenance. In addition, electrician training to promote safe work practices is strongly encouraged.
Starting Page	1
Ending Page	6
File Size	384557
Page Count	6
File Format	PDF
ISBN	9781424444281
DOI	10.1109/NAPS.2009.5484053
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hazards Power distribution Electrical safety Performance analysis Circuit faults Resistance heating Electromagnetic heating Electromagnetic radiation Gases Thermal force
Content Type	Text
Resource Type	Article

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