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Mining Publication: Evaluation of IYONI II Methanometers
Keywords: Methane monitors
This page is archived for historical purposes and is no longer being maintained or updated.
Original creation date: October 2003
Authors: JE Chilton, CD Taylor, RJ Timko
Conference Paper - October 2003
Download PDF Document (0.40 MB)
NIOSHTIC2 Number: 20023645
30th International Conference of Safety in Mines Research Institutes. Johannesburg, Republic of South Africa: South African Institute of Mining and Metallurgy, 2003 Oct; :579-594
No regular monitoring of methane is required in areas of gassy coal mines outby the mining face. Methane ignitions that have occurred in outby areas of the mine indicate the need to provide better protection to workers. Handheld methane monitors are now used by some miners to make periodic measurements of methane at the working face. The IYONI II gas detector, which is incorporated into a miner's cap lamp and worn the helmet, can continuously provide an alarm signal whenever methane levels exceed a set level. Tests were done to evaluate the performance characteristics of this methane detector by measuring response times with methane gas supplied through a calibration fixture or adaptor. Other response time tests were done with the detector in an environmental test box. Performance was also evaluated in a full-scale test gallery where face methane emission and underground ventilation were simulated. Procedures for calibration by response time measurement of the IYONI II detector have been developed. In limited testing, the IYONI II detector was found to reliably detect the presence of 1% by volume methane.
Image of publication Evaluation of IYONI II MethanometersConference Paper - October 2003
Download PDF Document (0.40 MB)
NIOSHTIC2 Number: 20023645
30th International Conference of Safety in Mines Research Institutes. Johannesburg, Republic of South Africa: South African Institute of Mining and Metallurgy, 2003 Oct; :579-594
See Also
Cableless Electronic Surveying Systems for Horizontal Holes
Evaluation of Person-Wearable Methane Monitors
Factors Affecting the Location of Methanometers on Mining Equipment
Ignition of Methane-Air Mixtures by Laser Heated Small Particles
Methane Emission Rate Studies in a Northern West Virginia Mine
Remote Fiber-Optic Methane Monitor
Remote Methane Sensors
A Second-Generation Remote Optical Methanometer
Use of a Test Box to Measure Response Times for Machine-Mounted Monitors
Use of Infrared Sensors for Monitoring Methane in Underground Mines
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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