Title 30--Mineral Resources
CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
PART 18--ELECTRIC MOTOR-DRIVEN MINE EQUIPMENT AND ACCESSORIES
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| 18.1 |
Purpose. |
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| 18.2 |
Definitions. |
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| 18.3 |
Consultation. |
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| 18.4 |
Electrical equipment for which approval is issued. |
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| 18.5 |
Equipment for which certification will be issued. |
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| 18.6 |
Applications. |
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| 18.8 |
Date for conducting investigation and tests. |
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| 18.9 |
Conduct of investigations and tests. |
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| 18.10 |
Notice of approval or disapproval. |
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| 18.11 |
Approval plate. |
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| 18.12 |
Letter of certification. |
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| 18.13 |
Certification plate. |
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| 18.14 |
Identification of tested noncertified explosion-proof enclosures. |
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| 18.15 |
Changes after approval or certification. |
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| 18.16 |
Withdrawal of approval, certification, or acceptance. |
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| 18.20 |
Quality of material, workmanship, and design. |
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| 18.21 |
Machines equipped with powered dust collectors. |
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| 18.22 |
Boring-type machines equipped for auxiliary face ventilation. |
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| 18.23 |
Limitation of external surface temperatures. |
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| 18.24 |
Electrical clearances. |
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| 18.25 |
Combustible gases from insulating material. |
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| 18.26 |
Static electricity. |
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| 18.27 |
Gaskets. |
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| 18.28 |
Devices for pressure relief, ventilation, or drainage. |
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| 18.29 |
Access openings and covers, including unused lead-entrance holes. |
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| 18.30 |
Windows and lenses. |
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| 18.31 |
Enclosures--joints and fastenings. |
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| 18.32 |
Fastenings--additional requirements. |
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| 18.33 |
Finish of surface joints. |
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| 18.34 |
Motors. |
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| 18.35 |
Portable (trailing) cables and cords. |
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| 18.36 |
Cables between machine components. |
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| 18.37 |
Lead entrances. |
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| 18.38 |
Leads through common walls. |
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| 18.39 |
Hose conduit. |
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| 18.40 |
Cable clamps and grips. |
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| 18.41 |
Plug and receptacle-type connectors. |
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| 18.42 |
Explosion-proof distribution boxes. |
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| 18.43 |
Explosion-proof splice boxes. |
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| 18.44 |
Non-intrinsically safe battery-powered equipment. |
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| 18.45 |
Cable reels. |
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| 18.46 |
Headlights. |
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| 18.47 |
Voltage limitation. |
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| 18.48 |
Circuit-interrupting devices. |
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| 18.49 |
Connection boxes on machines. |
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| 18.50 |
Protection against external arcs and sparks. |
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| 18.51 |
Electrical protection of circuits and equipment. |
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| 18.52 |
Renewal of fuses. |
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| 18.53 |
High-voltage longwall mining systems. |
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| 18.60 |
Detailed inspection of components. |
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| 18.61 |
Final inspection of complete machine. |
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| 18.62 |
Tests to determine explosion-proof characteristics. |
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| 18.65 |
Flame test of conveyor belting and hose. |
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| 18.66 |
Tests of windows and lenses. |
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| 18.67 |
Static-pressure tests. |
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| 18.68 |
Tests for intrinsic safety. |
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| 18.69 |
Adequacy tests. |
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| 18.80 |
Approval of machines assembled with certified or explosion-proof components. |
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| 18.81 |
Field modification of approved (permissible) equipment; application for approval of modification; approval of plans for modification before modification. |
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| 18.82 |
Permit to use experimental electric face equipment in a gassy mine or tunnel. |
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| 18.90 |
Purpose. |
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| 18.91 |
Electric equipment for which field approvals will be issued. |
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| 18.92 |
Quality of material and design. |
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| 18.93 |
Application for field approval; filing procedures. |
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| 18.94 |
Application for field approval; contents of application. |
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| 18.95 |
Approval of machines constructed of components approved, accepted or certified under Bureau of Mines Schedule 2D, 2E, 2F, or 2G. |
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| 18.96 |
Preparation of machines for inspection; requirements. |
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| 18.97 |
Inspection of machines; minimum requirements. |
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| 18.98 |
Enclosures, joints, and fastenings; pressure testing. |
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| 18.99 |
Notice of approval or disapproval; letters of approval and approval plates. |