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An alternative method to evaluate mine ground system safety.

Authors
Cooley-WL; Hill-HW Jr.; Maberry-ML
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract H0338023, 1985 Jan; :1-138
Link
NIOSHTIC No.
10004819
Abstract
A significantly different method of evaluating mine ground system safety was investigated. The method measures touch and step potentials around ground beds and grounded equipment resulting from a series of extremely small simulated faults. The values are then scaled for a full-scale fault. The method should be particularly useful for large ground beds and under conditions where the ground bed cannot be isolated from the rest of the ground system in order to make traditional ground bed resistance measurements. Instrumentation for making the alternative measurements was evaluated under rigorous field conditions. A step-by-step procedure is proposed for evaluating a surface mine ground system. This procedure was subject to several field tests at eastern metal mines and nonmetal mines. The final evaluation procedure is written as a stand-alone document for use by MSHA inspectors and mine operating personnel and is included as an appendix to the report.
Keywords
Electrical grounding; Safety engineering; Evaluation; Accident prevention; Surface mining; Mine safety
Publication Date
19850101
Document Type
CP; Final Contract Report
Fiscal Year
1985
NTIS Accession No.
PB86-130523
NTIS Price
A08
Identifying No.
OFR 117-85; Contract-H0338023
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract H0338023
State
WV
Performing Organization
West Virginia University
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