A P Explosives Private Limited

Vikrampuri, Secunderabad, Telangana

Instantaneous electric detonators comprise aluminium shells which are crimped with an electric fuse head soldered to a pair of GI wire having required PVC plug with APEL embossed on the plug for identification of the manufacturer. Each fuse head is checked for electrical characteristic like resistance that provides high reliable initiation of the explosives. The bare wires at the other end of the detonators are shorted with the body of the shell to arrest from initiation due to stray or static currents. After arranging instantaneous electric detonators in series, they are fired by means of blasting machines which gives adequate amount of energy required in the form of electrical impulse

Instantaneous electric detonators are initiators which have a wide range of applications in open cast, quarrying and also non-gassy underground mines, construction sites etc.

Instantaneous Electric detonators are made into bundles of 25 numbers. Two such bundles are then wrapped in craft paper to make a packet of 50 detonators. Thirty such packets are placed in a corrugated fiberboard box. The quantity per box may vary depending on the length of the wire used.

Copper electric detonators comprise copper shells filled with PETN and ASA as base and primary charge respectively. These shells are crimped with a pair of PVC coated wires soldered to fuse heads. The two lead wires are passed through PVC plugs of required length and diameter to protect from moisture and water. The other end of the wire is shorted to the detonator to protect against any stray/static current.

CEDs are used for initiation of explosive charges with controlled blasting which are used in underground gassy coal mines. CEDs are arranged in series. The firing is carried out by using an exploder which gives the required energy in the form of an electric impulse.

25 detonators are crimped and formed into a bundle. Two such bundles are wrapped in craft paper to make a packet of 50 nos. As per the length of the wire, the packets are kept in a corrugated box

APPDD are available in 0-6 numbers with delay interval of 25milliseconds. The shells are made of copper material. The delay element is inserted above the primary charge and consolidated. The delay timing is achieved by the lead element on the primary charge. The two lead wires are passed through the PVC plug soldered with the fuse head and crimped.

Permitted delay detonators are used in gassy underground coal mines.