SUBPART B—Construction and Design Requirements (§18.20 to §18.54)
- 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.