1. Deep hole permission will not be given condition like ED or OD. so u can use either ED or OD.
2. if it is only ED, then you have to close the circuit till about to take blast after all clearances.
pvgoud
On Tuesday, 29 October 2013 12:13 AM, Rohit Gaur <rohit3981198129@yahoo.in> wrote:
Dear Sir
I want to clear my concept of electric shot firing in following conditions....
1. Charging is complete and blast holes are ready for firing. (Hole dimension: 165mm dia, parameter4.5X5.5, depth 10m, hard massive iron ore, SME-Column charge, Emulboost Cast boosters --Prime charge ,, 17m/17ms/250ms twindet)
2.When all accessories used are NONEL.
3.Sudden Electrical storm is passing above the blasting site.
4. no permission for sleeping of holes' .
5.area is maoist prone. pilferage and theft is certain.
6. blaster ready with both Ordinary Detonator (OD) and electrical detonator(ED) both.
7. Blasting officer is ready to give direction---- whether to go with OD or ED.
What decision should blasting officer take in this event ---if deep hole blast permission contains ED only.
Regards
Rohit
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