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DOL/MSHA | RIN: 1219-AA75 | Publication ID: Fall 1997 |
Title: Longwall Equipment (Including High-Voltage) | |
Abstract: Since 1970, MSHA regulations have required that high-voltage cables and transformers be kept at least 150 feet from the coal extraction area. The objective of this requirement is to prohibit the use of high-voltage cables and equipment that could serve as an ignition source for methane and coal dust in close proximity to the work area. ^PThe modern development of highly productive longwall mining systems has resulted in their widespread use in the mining industry. Mine operators, however, currently must apply to MSHA for a variance from the existing standards in order to use this high-voltage equipment. The increased use of high-voltage longwalls in underground coal mines in recent years has led to the design of safe high-voltage electrical equipment and associated cables. These improvements have occurred specifically in the area of design and construction of explosion-proof equipment; insulation, short circuit, ground fault, and mechanical protection of cables; and equipment for safe handling of cables. For these reasons, in August 1992 MSHA published a proposed rule to establish safety requirements for the design, construction, installation, use, and maintenance of high-voltage longwall equipment and associated cables. The proposal would eliminate the need for a variance to use this equipment. | |
Agency: Department of Labor(DOL) | Priority: Other Significant |
RIN Status: Previously published in the Unified Agenda | Agenda Stage of Rulemaking: Final Rule Stage |
Major: No | Unfunded Mandates: No |
CFR Citation: 30 CFR 18 30 CFR 75 | |
Legal Authority: 30 USC 811 30 USC 957 |
Timetable:
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Additional Information: MSHA reopened the record on October 18, 1995. The comment period finally closed on December 18, 1995. | |
Regulatory Flexibility Analysis Required: No | Government Levels Affected: None |
Included in the Regulatory Plan: No | |
Agency Contact: Patricia W. Silvey Director, Office of Standards, Regulations, and Variances Department of Labor Mine Safety and Health Administration Room 631, 1100 Wilson Boulevard, Room 2350, Arlington, VA 22209-3939 Phone:202 693-9440 Fax:202 693-9441 Email: silvey.patricia@dol.gov |