First keep the ED far away and do not handle unless the storm clears out. Even keeping only the ED in Hand is dangerous and i have personnel experience
is the permission limited to use of ED only confirm and get permission for OD also . Frame bye laws /SOP if need be
Under the circumstances detailed , it would be safe to perform with OD at all times.with longer say 1.6-1.8 mfuse length, keep a vehicle with engine running , light the fuse and move out .
On Tuesday, October 29, 2013 12:13:21 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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