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A Comparison of Tungsten and Copper Hot Wire Ignition Capability and Discharge Duration in the Ignition Process of Explosive Atmospheres in Testing Apparatus. Studying of Intrinsic Safety Basics and Testing Machines.


PB269583

Publication Date 1976
Personal Author Zborovszky, Z.
Page Count 90
Abstract An experimental study was directed toward gaining improved understanding of the exact mechanisms causing ignition in the PTB breakflash. Tungsten and copper wires were investigated and compared as to their ability to cause hot wire ignition. The importance of discharge duration in the ignition process was evaluated. The parameters influencing the duration of a discharge (minimum discharge voltage, purity of electrode materials, purity and properties of the gaseous atmosphere, contaminations, and deposits on the electrode surface) were studied.
Keywords
  • Fire safety
  • Test equipment
  • Coal mines
  • Wire
  • Tungsten
  • Copper
  • Ignition
  • Electric discharges
  • Flammable gases
  • Research
  • Methane
  • Mine safety
  • Hot wire ignition
  • Explosive atmospheres
Source Agency
  • Bureau of Mines
NTIS Subject Category
  • 94H - Industrial Safety Engineering
  • 48A - Mineral Industries
Corporate Authors Denver Research Inst., Colo.; BUREAU OF Mines, Washington, D.C.
Supplemental Notes Supplement to report dated Nov 74, BM-OFR-68-76, PB-253 589 and BM-OFR-43-76, PB-250 389.
Document Type Technical Report
Title Note Final rept. 1 Dec 74-28 Feb 76.
NTIS Issue Number 197720
Contract Number
  • H0155038
A Comparison of Tungsten and Copper Hot Wire Ignition Capability and Discharge Duration in the Ignition Process of Explosive Atmospheres in Testing Apparatus. Studying of Intrinsic Safety Basics and Testing Machines.
A Comparison of Tungsten and Copper Hot Wire Ignition Capability and Discharge Duration in the Ignition Process of Explosive Atmospheres in Testing Apparatus. Studying of Intrinsic Safety Basics and Testing Machines.
PB269583

  • Fire safety
  • Test equipment
  • Coal mines
  • Wire
  • Tungsten
  • Copper
  • Ignition
  • Electric discharges
  • Flammable gases
  • Research
  • Methane
  • Mine safety
  • Hot wire ignition
  • Explosive atmospheres
  • Bureau of Mines
  • 94H - Industrial Safety Engineering
  • 48A - Mineral Industries
  • H0155038
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