Demolition Procedures Flashcards
How are blasting machines rated?
Rated in number of caps in series the machine will reliably detonate
Where must blasting caps be temporarily stored while preparing a demolition shot?
At least 25 feet away from explosives until final priming
What is the misfire wait time for an electrical misfire?
30 Minutes
How many holes are necessary for a lacing technique?
4 holes
How many wraps are needed for a hasty whip (Minimum)?
Four
Which knots could you use to attach two pieces of det cord together?
Square knot or modified girth hitch
Which knot would you use to initiate C-4 with unsensitized det cord?
Double overhand knot or uli knot
Which knot would you use to tie two pieces of det cord together to form a longer length?
Square knot
Which knot could you use to attach det cord to dynamite?
Lace or hasty whip
True or False: An electrical firing system consists of an electric blasting cap, firing wire, galvo, and a M81 igniter?
False
What would you use a galvanometer for?
To check firing wire and electric blasting caps for continuity
True or False: A crimper should be used to cut det cord?
False (No metal on metal cutting)
What knot would you use to attach a branch line to either a ring main or a main line?
Modified girth hitch
After connecting two caps in a series circuit, what step must be done next?
Check circuit for continuity
How many twists of an electrical blasting cap leg wires will provide a proper shunt?
MINIMUM of three twists
