Quiz 1 Flashcards Preview

SOC CALC AND PLACE QUIZ 1 > Quiz 1 > Flashcards

Flashcards in Quiz 1 Deck (35)
Loading flashcards...
1

Weight, RE and dimension of M1 dynamite

.5lbs (stick)
.92
1.25x8"

2

RE and weight of TNT

1lbs block
1.00

3

Characteristics of C2 primasheet

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

4

Characteristics of M186

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

5

Characteristics of M112 block demolition charge

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

6

How many grains per foot is Det cord

54

7

What are the types of block demolition charges

TNT
M112
M1 DYNAMITE
40lb CRSTERING CHARGE

8

Is ammonium nitrate hygroscopic?

Yes absorbs humidity

9

What is M700

Time blasting fuse

10

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

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

11

How far can moisture penetrate DRT cord

6in

12

What blasting cap would you use for an electrical firing system

M6

13

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

M7

14

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

1.5 amps/ 3 volts

15

What are the different parts of the M2 crumpets

Top- crimping
Bottom- cutting
Handle- poking holes

16

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

30 min non-electrical
No wait time for electrical

17

What can cause premature detonation of electrical blasting caps?

Radio, radar, tv signals, lightning, static electricity

18

How do you find Det cord net explosive weight?

Length in ft*54*RE=total grains of explosive

Grains/7000=net explosive weight in lbs

19

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

300meters

20

How do you calculate safe distance

Meters= 100x cubed root of NEW

21

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

2 B/C fire extinguishers

22

Where should blasting caps/ initiators be transported?

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

23

How should you store explosives?

No less than 3in between bottom of floor
No less than 18in between top of the stack and the cover

24

How are magazines placed?

Safety
Accessibility
Dryness
Drainage

25

How much should magazines weigh?

No more than 500lbs per pile

26

How far apart should magazines be placed?

No less than 140ft

27

What are the different detonation effects

Deformation
Spalling
Radial cracking

28

To transmit the greatest shock the charge must:

Charge to target contact is crucial

29

What type of charge is efficient? Quicker?

Internal
External

30

What is the 6 step problem solving format

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