Safety/Transportation Flashcards
Can you burn blasting caps?
No, destroy blasting caps by detonation
What are the detonation procedures?
Move to MSD, Take adequate cover then detonate explosives
Should you use blasting caps underground?
No. It’s against US policy
What is the first step when conducting continuity checks?
Ground yourself
How far away from energized power lines should you keep electric blasting caps?
Minimum of 155 meters
When should you preform a 3ft test burn on time fuse?
When you get a new roll, if marked roll is not used within 24hrs
How do you preform a 3ft test burn on time fuse?
Measure 3ft of Time fuse, time the length of the burn, mark with DTG and time (sec), Do not use the first or last 6 inches, tie a not in the non-working end (helps identify working end)
What is the minimum fragmentation hazard distance for a charge that has a N.E.W. less than 27lbs?
300 meters
For chargers greater than 500lbs how is the Minimum Safe Distance calculated (MSD)?
Meters= 100 x cube root of the N.E.W.
Feet= 300 x cube root of the N.E.W.
What does N.E.W. Stand for?
Net Explosive Weight
How long should you wait to clear a non-electric misfire?
30 minutes
How long should you wait to clear an electric misfire?
0 minutes/Immediately
Vehicles transporting explosives should be equipped with what type of fire extinguisher and how many?
B and C, 2
Where are blasting caps stored during transportation?
Separate from demolitions, if not possible, carry the caps in the cab in an approved Ammunition Container
To ensure circulation of air how far should the bottom of the stack be away from the earth flooring?
No less than 3 inches.
To ensure circulation of air what is the distance between the top of the stack and the cover of the magazine?
Minimum of 18 inches
What are the rules for storage of explosives in a temporary magazine?
No more than 500lbs per pile
No less than 140 feet apart
What items can be burned during destruction procedures?
Packed or unpacked HE items:
Linear, shape and block/stick demolitions such as dynamite, DET Cord, firing devices, and time fuse.
Where should you place initiating charges on a pile of explosives that you want to detonate during destruction procedures?
Top of pile to prevent throwing unexplored explosives, Every 4-5 feet.
What does SADD stand for?
Safety
Accessibility
Dryness
Drainage
How should the responsibility of transporting, loading and storing explosives be handled?
The responsibility should not be divided
What is the equation for Det Cord N.E.W.?
Length in feet x 54 grains per foot x RE factor = Total grains of explosives
Grains / 7000 = N.E.W.
When cutting shock tube you should never use what?
Crimpers
What can cause premature detonation of an electric blasting caps?
Radio Radar TV signals Lightning Static Electricity
What should you always do before unshunting wires?
Ground yourself
When working with demolitions how many people should you use to accomplish the mission?
The Minimum number of personnel necessary to accomplish the mission
What are some safety considerations when using demolitions?
Do not use blasting caps underground. Use Det Cord or M151/M152 boosters
Suspend blasting operations during electrical storms (not a consideration, it is definitive)
When transporting blasting caps you should not..?
Carry loose caps in pockets or in any uncontrolled container.
