DBPapers
DOI: 10.5593/SGEM2015/B13/S3.013

ASSESSMENT OF IGNITION SENSITIVITY OF GASEOUS EXPLOSIVE ATMOSPHERES FROM UNDERGROUND FIREDAMP MINES

M. Darie, M. Magyari, S. Burian, J. Ionescu, T. Csaszar
Friday 7 August 2015 by Libadmin2015

References: 15th International Multidisciplinary Scientific GeoConference SGEM 2015, www.sgem.org, SGEM2015 Conference Proceedings, ISBN 978-619-7105-33-9 / ISSN 1314-2704, June 18-24, 2015, Book1 Vol. 3, 97-102 pp

ABSTRACT
The use of technical equipment for storage, transfer and / or process this kind of substances involves the formation, in their neighborhood, of specific areas having a significant risk of explosion [6]. Functional aggregation of such technological systems is made by using low current technical equipment (for interlocking, command, data communication, signaling) [4].
The paperwork presents a follow up on the research based on statistical analysis of humidity influence on likelihood of ignition of explosive gaseous atmospheres in underground firedamp mines, from weak currents equipment and installations.
The first part of the paperwork presents a theoretical model resulted from the statistical analysis of experimental results obtained in tests performed in an explosive mixture of air and methane.
The second part shows a theoretical approach of ignition sensitivity by spark in relation to the methane concentration in air.
The third part comprises an integrated theoretical model that takes into consideration both aspects, air humidity and methane concentration.

Keywords: firedamp mines, explosive atmospheres, ignition likelihood, humidity