Abstract
Quality and Performance of Permitted Explosives and Detonators used in SCCL Mines in India
Highlights
Permitted explosives and detonators are explosive products which are approved by Directorate General of Mines Safety (DGMS) for use in underground coal mines where there is likely presence of inflammable atmospheres of coal dust and firedamp
Results of studies on post detonation toxic fumes were done with the help of Rescue team of SCCL in presence of CIMFR Scientist which gives the real picture of toxic contents of explosives used in underground coal mines where working personals are allowed to work after 5 minutes of blasting
Evaluation of thirty-seven samples of permitted explosives and ninety-eight samples of permitted detonators revealed useful information on their conformity or deviation from desired quality requirements specified in relevant standards, DGMS circulars and SCCL purchase orders
Summary
Permitted explosives and detonators are explosive products which are approved by Directorate General of Mines Safety (DGMS) for use in underground coal mines where there is likely presence of inflammable atmospheres of coal dust and firedamp They are designed to meet the statutory requirements with respect to their incendivity as well as other safety and performance parameters for their safe and efficient use in underground coal mines [1]. Permitted detonators should possess circuit continuity, uniform electrical characteristics, series firing characteristics and adequate strength for their unfailing detonation and initiation of the cap sensitive explosives. They should meet no fire current safety requirements as a safeguard against stray currents. As such, permitted explosives and permitted detonators should conform to a high degree of safety as per standards, stipulated
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