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