Results 1 - 10 of 15

• Derating Factors for Round and Flat Mine Trailing Cables
  9/17/2012 - Safety guidelines, tips, and checklists, Unpublished documents and reports
  Concerns about the present derating factors used for reeled trailing cables prompted researchers at the NIOSH to determine new derating factors for reeled coal mining trailing cables.
• Solutions to Prevent Materials-Handling Injuries in Underground Coal Mines
  2/1/2007 - Peer reviewed journal articles
  This paper describes three mechanical methods - the mobile manipulator, the in-mine hoist, and a cable-handling system - developed by NIOSH to reduce injuries related to handling supplies or material, loading and unloading, and moving power cables.
• Detrimental Effects of Capacitance on High-Resistance-Grounded Mine Distribution Systems
  9/1/2006 - Peer reviewed journal articles
  There are potential detrimental effects of capacitance charging currents during line-to-ground faults in mine power distribution systems. A representative mine power system is modeled, and simulations with faults at various locations are conducted.
• Distributed Measurement of Conductor Temperatures in Mine Trailing Cables Using Fiber-Optic Technology
  3/1/1998 - Peer reviewed journal articles
  Mine trailing cables operated above safe thermal limits can cause premature insulation failure, increasing electrocution and fire hazards. This paper describes an approach to measuring temperatures within reeled cable under dynamic test conditions.
• Application of Extreme Power Line Communication Methods to Mine Environments
  7/16/2016 - Contracts and cooperative agreements
  A contract to assess the suitability of current power line communication methods (used in nonmining applications) for underground coal mine communication, using mine electrical power distribution conductors as a system backbone.
• The Effects of Restricted Workspace on Lumbar Spine Loading
  3/1/2001 - Peer reviewed journal articles
  Coal miners often handle heavy electrical power cables, weighing up to 10 kg per meter. These cables are manually lifted and attached to the mine roof to prevent damage from mobile underground equipment.
• A Passive Means to Detect Hot Trolley Insulators
  1/1/2000 - Peer reviewed journal articles
  NIOSH has devised a passive means to detect overheating insulators on direct current systems.
• Technology News 474 - A Passive Means to Detect Hot Trolley Insulators
  8/1/1998 - Technology News
  NIOSH designed a passive device to detect overheating insulators on mine trolley/track haulageways.
• Investigation of Ampacity Derating Factors for Shuttle Cars Using Fiber Optics Technology
  10/1/1997 - Conference papers
  A method is described to determine dynamically the conductor temperature of reeled shuttle car cables using fiber optics technology.
• Technology News 456 - A Fault Detection Neural Network for DC Trolley System Protection
  5/1/1997 - Technology News
  Using an artificial neural network based system to detect trolley faults would require no modification of the trolley rectifier, line, feeder, or its vehicles, lessening maintenance concerns and costs.