#3 Flashcards Preview

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Flashcards in #3 Deck (19)
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1
Q

Nonelectric blasting caps…

A

do not carry lose caps in pockets or in any uncontrolled container.

2
Q

Electric blasting caps…

A

always ground yourself before unshunting.
keep caps at least 155m from energized power lines.
always check continuity before use.

3
Q

Premature detonation of electric blasting caps.

A

Radio lightning
Radar static electricity
TV signals

4
Q

Time fuse…

A

always conduct a 3’ test burn on each roll.
mark each roll with DTG
if roll is not used within 24 hrs. conduct a 3’ test burn.
do not use first and last 6” from a new or partially used roll
tie a half knot in non working end

5
Q

Shock tube…

A

never use crimpers to cut shock tube

6
Q

Det cord…

A

avoid sharp bends, loops, and kinks as well as stepping on the cord

7
Q

Det cord…

A

avoid sharp bends, loops, and kinks as well as stepping on the cord (any of these can change the path of the cord and/or cause a cut in the cord)
RE = 1.66

8
Q

Should you use blasting caps underground?

A

No, use M151/M152 boosters

9
Q

What is the first step you take when conducting a continuity check?

A

Ground yourself.

10
Q

How far away from energized power lines should you keep electric blasting caps?

A

155m

11
Q

When should you perform 3’ test burn?

A

On each new roll or if roll has not been used within 24hrs.

12
Q

What is the minimum fragmentation hazard distance for a charge that has a NEW of less than 27 lbs?

A

300m

13
Q

How long should you wait to clear a nonelectric misfire? an electric misfire?

A

Nonelectric: 30min.
Electric: immediately.

14
Q

Vehicles should be equipped with what type of fire extinguisher and how many?

A

2 Class B/C fire extinguishers.

15
Q

Where are blasting caps stored during transportation?

A

Shall not be transpos

16
Q

Where are blasting caps stored during transportation?

A

Shall not be transported in the same vehicle with other explosive if possible. if no carry caps in the cab in an approved ammunition container.

17
Q

What are the rules for storage of explosives in a temporary magazine?

A

no more than 500lbs./pile. and should be placed no less than 140’ apart.

18
Q

What items can be burned during destruction procedures? Detonated?

A

Packed or unpacked HE items linear shaped and block/stick demo. Stack piles not to exceed 2000lbs. or 3” thick. anything not encased in metal that might produce shrapnel can be burned

19
Q

Where should you place initiating charges on piles of explosive that you want to detonate during destruction procedures?

A

every 4-5’ on top of the pile.