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Demolition Flashcards

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0
Q

Handle demo ____ a year to maintain Qual/Cert? Reboard too.

A

Once a year for Qual

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1
Q

Handle demo once a ______ for PAY?

A

Once a month for pay

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2
Q

Who goes downrange during misfires?

A

2 ppl: RSO & observer

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3
Q

Eye Pro is rated to what?

A

ANSI Z-87

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4
Q

Explosive driver’s license is valid for ____ years?

A

2 years

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5
Q

What do you store blasting caps in? and how many

A

MK 663 (Silver Can) 10 caps

Or packing box

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6
Q

Explosive Driver/Handler physical every _____ years?

A

Every 5 years (like dive physical)

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7
Q

What is HERO?

A

Hazards of
Electromagnetic
Radiation to
Ordnance

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8
Q

4 Range positions? (People)

A

RSO Range safety officer
QA Quality assurance
Team Leader
Team Member

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9
Q

How far to keep COMMS away from HERO susceptible items?

A

25’

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10
Q

WX issues:
Ops stop when thunderstorms approach within ____ miles?

How many second between sight and sound?

A

5 miles

25 sec between

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11
Q

Firefighting equipment has to be on hand & deployable within ___ mins?

A

5 mins

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12
Q

Code:

A-D

A

Servicable (Authorized for Use)

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13
Q

Wait how many minutes in protective crew area between single shots and the last shot?

A

5 mins

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14
Q

Code:

B-C-D

A

Training (Authorized for Use)

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15
Q

Code:

E-H

A

Unservicable (NOT authorized for use)

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16
Q

Code:

J-N

A

Suspensed use (Not authorized for Use)

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17
Q

Relative Effectiveness Factor

TNT =

A

1.00

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18
Q

3 forms of energy in demo:

A

Air Shock,
Watershock,
Ground Motion

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19
Q

Galvanometer is for:

A

Testing the continuity of firing wire & blasting caps.

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20
Q

Parts of the Explosive Train:

A

Initiator, Booster, Base charge

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21
Q

What kind of batteries in Galvanometer?

A

Silver Chloride

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22
Q

Use Galvonometer by observing ___________ for _______ seconds?

A

Observing DEFLECTION for 20-60 seconds

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23
Q

Firing Wire Wheel holds:

A

500’ Heavy cable

1000’ Lightweight cable

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25
Blasting machines: M32 -
10 cap Series (2 parallel) Waterproof to 3'
25
Blasting machines: M34
Indicator Lamp for self-test 50 cap in series (2 parallel) Water proof to 3'
26
Blasting Machines: MK1 MOD 1
50 cap -Parallel (2 series) Waterproof to 60' Transported to 240'
28
Series circuit needs ____ amps to fire, regardless of the # of caps
1.5 amps
28
Blasting Machines: CD 450-4J
Not recommended for Parallel circuits 450 volts, 130 Ohms 65 cap (series) 9V battery good for 350 cycles
29
Parallel circuit needs ____ amps per circuit, PER CAP.
0.6 amps - PER CAP
30
Electric Blasting caps: M6/MK11-HERO Safe resistance
Resistance of 2.0 ohms (5 caps x 2.0 ohms= 10 ohms) in series
32
Non Electric Time Fuse: Burns for ___ to ___ seconds
Burns for 36 to 44 sec | faster tamped or underwater
33
Non- Electric Fuse ignitor
M81 fuse ignitor,
34
Non-electric blasting cap | Requires ______ crimp for underwater ops.
M7 : | Double crimping
35
Is MK11 blasting cap HERO safe?
Yes
35
Double crimping for underwater det: - First crimp 1/4" - Turn ____degrees - Second crimp ____ below first crimp
Crimp 1/4" Turn 90 deg. Second crimp 1/8" from first
36
Non Electric Misfire: - Recock M81, fire ____X's - wait ___ mins - 2 ppl downrange (_____ & _____) - install new M81 ignitor
3 x's Wait :60 mins 2 ppl downrange - RSO & safety observer
37
Electric Misfire:
- make 3 attempts to detonate - check continuity, (good continuity) make 3 attempts - retest/switch blasting machine , make 3 attempts - nothing? Wait 30 mins before downrange
38
MK23 Mod 0 Pyrotechnic Lead Initiator: Cannot be used _________.
MK23 mod 0 Cannot be used underwater
39
Splicing: Connect 2 or more caps
Western union | Cap-to-cap
40
MK54 dual firing device Can be transported underwater to a depth of ____ fsw
Shock tube/NONEL | 200 fsw
41
Do you have to waterproof shock tube/NONEL for underwater?
No Factory crimped
42
Satchel Charge: ___ M112 blocks & 4 M15 priming assemblies
16 c-4 blocks
43
Shock Tube/NONEL Mis-Fire Initiator fails? Detonator Fails? Time ti go down range?
Initiator fails -re-cock & attempt to fire (2nd & 3rd time) detonator - Install new initiator down line, 3-4' min from fired end. :30 to inspect
44
M112 Demo (C-4) weight
. | 1.25 lb bar
45
Tubular demo kit (PETN or RDX) Designed for underwater use up to ____ fsw.
50 fsw
46
Shaped charges: | For max penetration of target: 4 things
Optimum standoff High Velocity explosive Dense cone liner Free air space
47
Shaped charge: Optimum standoff rule of thumb ____ x's the diameter/width of charge
1.5 x's
48
MK20 Mod 0 Cable Cutter: Depths up to ___ fsw Cut up to __" steel wire tope Lanyard min __ ft Use ____ _____ when wire 1/2" or less
Depths up to 60 fsw Cut up to 1" steel wire rope Lanyard min 8 ft Use safety block when 1/2" or less
49
Transportation of explosives, Age's
18 on base/ 21 off base
50
Transportation of explosives manning
Off base Requires 1quald explosive driver and 1 representative
51
Transportation of sec cat I II
requires armed guard for off base
52
High explosive
Virtually instant rapid formation of gas and heat, high pressure shattering effect. velocity greater than the speed of sound.
53
High Explosive Uses
Cutting, Breaching, Cratering, demo
54
Low Explosive
Solid to a gases state slowly over a period
55
Low explosive use
Exerts rapid pushing effect, propellant
56
Low Explosive Deflagration
rapid burning self consumeing
57
Ten Cap blasting Machine
Detachable handle turns clockwise 90deg to fire | Single surge of DC is generated
59
Shaped Charge Max Cut standoff
5/16" use spacers
60
Brisance
Shattering effect/ High explosives - quicker the explosion
61
3 types of initiating systems
Electric, Non Electric, Shocktube NONEL
62
Electric Blasting Machines - Initiating system
M32 / M34 / MK1 Mod1 / Ten Cap / CD 450 J
63
Electric Blasting Caps - Initiating system
M6/Mk11 HERO safe
64
NONEL - MK 120 - 127 Characteristics
100-1000' Olive Drab Single or dual
65
NONEL Firing Device
MK 55, MK 54
66
NONEL Igniter W/mod
M81/T2 W/MK 173 mod
67
NONEL Initiator
Mk 23/24/25
68
MK 55
NONEL | Single firing device
69
Mk 54
NONEL Dual Firing Device Depth of 200FSW
70
M81 W/mk173
NONEL | Water proof
71
MK 23
NONEL Single cannot be used underwater
72
Mk 24
NONEL Single Water resistant
73
MK 25
NONEL Dual -water resitant Only used with MK 54
74
M118 Demo Charge
4 1/2Lb sheets
75
Mk 19 delay element
52 +- 15 milliseconds
76
Flexible linear shape charge
300 grain, 5/16 standoff for a max cut
77
Det Cord internal Knots
Double over hand Uli Quad triple roll
78
Priming Adapters
M1A3 Circle, M1A4 Hex
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