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SOC CALC AND PLACE QUIZ 1 > Quiz 1 > Flashcards

Quiz 1 Flashcards

1
Q

Weight, RE and dimension of M1 dynamite

A

.5lbs (stick)
.92
1.25x8”

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2
Q

RE and weight of TNT

A

1lbs block

1.00

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3
Q

Characteristics of C2 primasheet

A 
.083 x 10"x38' 
20lbs roll 
2 rolls per box / 40lbs 
RE: 1.14 
NEW: .5 per 1 ft
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4
Q

Characteristics of M186

A 
.75x 3"x 50'
25lbs roll 
3 rolls per box / 80lbs 
RE: 1.14 
NEW: .5 per 1ft
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5
Q

Characteristics of M112 block demolition charge

A

1”x2”x10”
1.125lbs
30 per box /40lbs
RE: 1.34

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6
Q

How many grains per foot is Det cord

A

54

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7
Q

What are the types of block demolition charges

A

TNT
M112
M1 DYNAMITE
40lb CRSTERING CHARGE

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8
Q

Is ammonium nitrate hygroscopic?

A

Yes absorbs humidity

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9
Q

What is M700

A

Time blasting fuse

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10
Q

How can you tell the difference between time fuse and DET cord?

A

Time fuse- dark green plastic with yellow band
- has black powder core
DET CORD- white powder, green outer cover w/o markings

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11
Q

How far can moisture penetrate DRT cord

A

6in

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12
Q

What blasting cap would you use for an electrical firing system

A

M6

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13
Q

What blasting cap would you use for a non-electrical firing system?

A

M7

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14
Q

How many amps/ volts are needed to set of a M6 blasting cap?

A

1.5 amps/ 3 volts

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15
Q

What are the different parts of the M2 crumpets

A

Top- crimping
Bottom- cutting
Handle- poking holes

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16
Q

How long must you wait for a non- electrical misfire? Electrical?

A

30 min non-electrical

No wait time for electrical

17
Q

What can cause premature detonation of electrical blasting caps?

A

Radio, radar, tv signals, lightning, static electricity

18
Q

How do you find Det cord net explosive weight?

A

Length in ft54RE=total grains of explosive

Grains/7000=net explosive weight in lbs

19
Q

What is the minimum safe distances for charges less than 27lbs

A

300meters

20
Q

How do you calculate safe distance

A

Meters= 100x cubed root of NEW

21
Q

What type and how many fire extinguisher guishers should the truck be equipped with?

A

2 B/C fire extinguishers

22
Q

Where should blasting caps/ initiators be transported?

A

In another vehicle away from explosives. If not possible in cab of truck in approved ammunition container.

23
Q

How should you store explosives?

A

No less than 3in between bottom of floor

No less than 18in between top of the stack and the cover

24
Q

How are magazines placed?

A

Safety
Accessibility
Dryness
Drainage

25
Q

How much should magazines weigh?

A

No more than 500lbs per pile

26
Q

How far apart should magazines be placed?

A

No less than 140ft

27
Q

What are the different detonation effects

A

Deformation
Spalling
Radial cracking

28
Q

To transmit the greatest shock the charge must:

A

Charge to target contact is crucial

29
Q

What type of charge is efficient? Quicker?

A

Internal

External

30
Q

What is the 6 step problem solving format

A

1) all critical data
2) calculate for TNT (d^2)/40
3) divide by RE
4) divide by package size and round up
5) multiply by number of targets
6) total quantity of explosive

31
Q

What are the components of a non electrical initiating set?

A

Fuse igniter
M700 time fuse or equivalent
M7 nonelectrical bladtin cap

32
Q

Draw a nonelectrical initiating set

A

M60—-M700-M7 blasting cap

33
Q

How do you calculate burn rate

A 
1- tie square not in non working end 
2- cut 6 in off working end 
3 cut 3' of working end
4- conduct test burn 
5- determine sesired burn time
6- take desired burn time in seconds/ burn time of 3' test
34
Q

What are the components of an electrical initiating set

A

Power source
Firing wire
M6 electrical blasting cap

35
Q

Characteristics of Det cord

A

12.8lbs per 1000ft

Re: 1.66

SOC CALC AND PLACE QUIZ 1 (1 decks)

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