Random Flashcards
Chem filler groups
CHEMICAL FILLER GROUP A
Highly toxic liquid agents
-nerve, mustard,lewisite
Wait time for burn pad between uses?
2hrs if wet
4 hours of not wet
24 hours of black powder
Wait time before returning to a burn pad after use?
30 minutes
Hero safe
Susceptible
Unsafe
Safe- immune to effects of EMR
susceptible- ordnance contains electrically initiated devices that are adversely affect d by radio energy
Unsafe- item with explosive potential is unsafe when internal wiring is exposed; additionally electrical connections have been made; EEDS with exposed leads.
Caps inside mk663 are considered?
1.1B to 1.4S
What do green yellow and red lights mean on the mk 67?
Green -on
Yellow- unarmed
Red- armed
Do boxes of small arms ammunition need to be marked IAW 49 CFR ? Placarded?
No, ordnance assigned to 1.4S (cartridges for small arms, primers) are exempt from labeling and placarding
Hazard conditions and placards
1- octagon
2- cross
3-upside down triangle
4- diamond
Trenching
Buttressing
Venting
Trenching- 24 in below foundation as close to building as possible. 18in wide
Buttressing- ground to ceiling, 10ft out with taper at top ranging from 4-5ft. Sandbags interlock. Can use 4x4s
Venting - channel above for venting
DODIC
NALC
NSN
Dept of defense ID code
Naval ammunition and logistics code
National stock number
Where should emergency triangles be placed? How many should be carried?
100’ in front and behind; at the traffic side no more than 10’ from rear or front
What placards are required and where?
Highest classification and on all four sides
How old do you have to be to drive explosives?
18 on base 21 off base.
Max time explosive driver can drive?
8 hours unless in an emergency
What distances must drivers stop for railroad crossings?
300’ flashers and slow down
Complete stop at 15-50’
Look then cross
Convoys no less than 50’ no longer than 300’ apart
TNT
M112
M5A1
TNT- 1/4, 1/2, 1lb
M112- 1.25lb
M5A1- 2.5lbs
Det cord misfire wait time
30min
Mk 186 mod 2 wait time
1 hour for capacitors to bleed down
Shock tube misfire wait time
30min
Non electric misfire w/t
60 min
Electric misfire w/t
30 min
Can you intermix insensitive exp and non insensitive?
No will cause kick outs
Galvo battery?
Silver chloride dry cell
Cap build up area distance from explosives
50feet
Min distance between caps and explosives
25feet
Training range for IBD for water tools
MWB - 125ft (max new 24.5g)
HYDRAJET-200ft (max new 900g)
What can you dispose of by detonation?
Detonators Dynamite in bulk Explosive loaded grenades Group C Chem (wp/pwp) HE bombs, mortars, projos Rockets/missiles warheads Mines Bulk initiating explosives
Tensile strength of det cord?
50 grains/ft= plioform wrapped = 160lbs
50grains/ft=wire bound 220lbs
100/200grain/ft = 210lbs
Water mitigation
Plastic 5 gallon car boys
Wading pool 7.5x22in deep
1100 gallon tank
Pit is dug 4x diameter of munition or 1 ft minimum
NEW limit is 15.5 pounds
QDR for tunnel or cave
1800ft with 1 degree buffer on each side
K factors
K-625 fly rock
K328- non-essential personnel
K50- essential personnel (eod cp)
K40-50- inhabited building distance
K24- down range/p2 distance indoor breaching (2.3 psi-1% chance of ear drum rupture)
K18- unbarricaded exp, breaching, 5%chance of ear drum rupture
K9- barricaded explosives/barricaded intraline distance
K3.5- CCT in caves
Definition of high and low explosives
High- det velocity occurs more than speed of sounds
Low- det velocity less than speed of sound
HFDR-
1% chance being struck with hazardous drag (756ft/lbs) 1 piece / 600ft2
Max grenades disposed of at one time?
20x hand grenades
50- 40mm
100 caps
Distance Bombs awaiting detonation/objects awaiting burn?
Small piles 100’ apart at least 500’ from the pit
Detonations not to occur with in ____ or loaded/discharged at _______?
60 minutes or at night.
CO can approve night loading.
What is a cluster? What is a nest?
Cluster is 3 incendiary grenades taped together
Nest- 2 or more clusters
Amount of explosives surrounding cap or knot?
1/2” on the sides
1” on the tip
Electric misfire
3 times Check continuity 3 more times Check connection to blasting machine 3 more Change blasting machine 3 more Shunt and wait 30 min
Shock tube misfire
Multiple attempts to fire Cut 3 feet off Replace igniter Multiple attempts to fire Nothing? Wait 30 min
M81 misfire
Recock rotate 90degrees pull 3 times
Leave or replace igniter
Wait 60 min
Countercharge
Where to crimp a cap
1/8-1/4 from base
How should you deal with buried misfire charge ?
Uncover only enough to countercharge or dig into buried charge and prime into det cord
What do you do with scattered HE? Fuze/components?
Collect HE
Blow components and fuzing in place
Minimum distance for testing electric caps?
50ft downwind of explosives
Can you bury caps?
Sensitized det cord?
No use det cord to keep caps above ground
Can’t bury sensitized det cord
Military caps are equivalent to what civilian/commercial caps?
M6=NO. 8
M7= NO. 12
Water mitigation
Plastic 5 gallon car boys/ wading pool
7.5ftX 22in deep
How long is m1 dynamite good for underwater
24 hours
Order of precedence between OP5, SWO 60, and 1-1-31
Op-5, swo60, 1-1-31
What are the range classifications?
Class A 500-3000lbs-IBD 5000’
Class B 150-300lbs IBD 3000’
Class C 25-150lbs IBD 2500’
Class D 0-25 lbs IBD 2500’
Can be reduced to 0-5 lbs
Det Yorktown is C but self impose limit to 25lbs.
Fire fighter response time to burn site?
With in 5 minutes
M60T2
M81
M81 can be used to initiate shock tube
Surface burn pad set up
300x300ft pad cleared of combustibles (only sand and dirt)
Surrounded by 200x200ft border free of all vegatation and combustibles
Burn sites 50 ft apart
No more than 10degree gard
Demo ranges clear of combustibles out to
500ft
Electrical storm distance?
10 miles
Only non sparking tools or clean knife to be used within
15 ft
Current need to fire m6 electric cap
Series- 1.5 amps no matter how many caps
Parallel .6 amps per cap
Resistance of m6 cap
2ohms
M700 time fuse
36-44 sec burn rate
1 tic = 18in
Max speed for exp vehicle
55mph
RCRA
Resource conservation and recovery act
NCEA
Non combat expenditure allowance
Minimum depth for dumping at sea
Op 4 says 50 fathoms or 300ft
Priming a thermite
Standard- tape cap 1” from top business end up
Modified- remove fuze
Puncture tape
Scrape first mixture
Pour smokeless powder in or split time fuze
Mach stem effect
Intersecting waves form more powerful third wave
Classification code for caps
1.4B
Classification code for c-4 block
1.1D
Classification code for time fuse
1.4 S
of personnel to investigate misfires
2 personnel
Shelter needed for burn?
Yes
Barricaded 100’ away
Unbarricaded 500’ away
Explosive mishap publication
Opnavinst 5102.1
What size separates small arms from projectiles
30mm
Explosives of m6 or m7 cap
Base charge - rdx or petn
Intermediate charge - lead azide
Ignition charge - smokeless powder, potassium chlorite, lead styphnate, or barium chromate
Hero safe caps
Mk 11 mod 0
Mk 17 mod 0
CHEMICAL group D
Incendiary, anti material compounds
Triethyalimin in fire rockets
CHEMICAL group B
Riot control
Smoke screening agents
(Cs, smoke)
Low explosives
Pyrotechnics
Propellants
Black powder
Deflagrate
CHEMICAL decomposition is less than speed of sound, creates great amount of heat, gas, and light burn it detonation
Detonate
CHEMICAL decomposition at a rate greater than the speed of sounds which causes an explosion
What weather/atmospheric conditions prohibit disposal by detonation?
Periods of heav, low total overcast or during electrical storms. OP5
electrical dust san or snow storms are nearby (APPROX 5 miles) SWO 60
Minimum wait time after detonations
5 minutes if all shots were counted
Can rocket warheads and motors be disposed of simultaneously as one unit?
Where ever practical, separate the rocket motor fro the HE head and treat the head as a projectile. Is separation is impractical, short range rockets may be treated in a pit.
What is the preferred method of disposal dynamite ?
Burning is the preferred method for the destruction of explosives which can be safely burned.
However, some instance deteriorate dynamite is authorized for burning in a boxed condition.
What is the suggested method of disposing of cases of dynamite by detonation?
A primed cartridge of dynamite can be use to initiate detonation of boxes dynamite. The primed cart should be placed well in the center of a new bow of dynamite of unquestioned quality, and this box placed in close contact among the boxes of dynamite to be destroyed.
What is the max number of group C chemical rounds (wp/pwp) that may be disposed of by detonation at one time?
Group C chemical munitions or components should be destroyed one round or item at a time ( OBSOLETE) currently there are no restrictions.
May thermites be used in cold weather?
Be aware that incendiary grenades that are frozen may detonate upon initiation. Let thaw for 2-5 days at rom temperature
As a general rule what types of explosives are good for EOD work?
Explosives itch a high velocity and Brisance are best for most EOD applications. Explosives with a lower velocity of detonation are best for cratering , ditching and quarrying.
How is time fuse affected underwater?
Rate of burning is increased significantly. Therefore it is not recommended that time blasting Gus not be used underwater
Test burn distance away from explosives?
50ft downwind from any explosives
Under normal conditions what is the minimum length of time fuse used to initiate a charge?
Minimum of 6 feet
When can you bypass a wait time
Emergency situations
Combat necessitates
When you can visually see a break in the circuit
What is the det cord we most commonly us?
Pliofilm reinforced
Can you use .50 cal carts in a series circuit with different color leads?
Use only carts with same color leads
When compared to #8 commercial cap how much more powerful is a military cap
Twice as powerful
What is the main advantage of using det cord in a firing system?
Can set up buried or u/w charge
Resistance and amperage necessary to fire a military cap
2ohms, and 1.5 Amps in series, .6 amps per cap in parallel
Resistance of 1000ft of 16 awg firing wire?
4 ohms
What is in shock tube?
.1 grains/ft HMX/a1
What is the w/t for the mk 67
30 minutes
What are the sizes of det cord
25 gpf, 42, 100, 200gpf
What depth can you dive sensitized det cord to if prepared properly
300 feet
How are underwater shots utilizing det cord prepared
Det cord is to be initiated with two waterproofed caps and fuse firing systems or two det cord initiators. Free ends of det cord will be waterproofed and tape used shall be coated with a sealer
4 methods of connecting det cord
Girth hitch, square knot, tape, m1 clip, blue devils, wire, etc
Three authorized methods of disposal
Burning, detonation, static firing
Ohms law
Voltage= current x resistance
W/t for a grenade?
30 minutes
All burning operations will be complete a minimum of ____ minutes before personnel leave.
30 minutes
What types ammunition are authorized for disposal by burning?
Black powder
Certain group B chemical agents and ammunition
Limited quantities of dynamite in bulk
Floating smoke pots (HC-filled) or similar ammunition
Bulk HE
Group C and D chemical ammunition and munitions
Bulk HE
Nitrocellulose
Primers
Pyrotechnics
Small arms
Smokeless powder
TNT blocks
Tracer mix and other pyrotechnic mixtures
Rocket motor propellant grains
Minimum distance that a burn pad should be located from any other structures or roads
Non ammunition related ops shall be provided k 40 with 1250 foot minimum or reduced distance for NEWs less than 450pounds
Is a personnel protection area required at the burn site?
Yes if protected by barricade then 100 feet away if not then 500 ft away
How long must you wait after a burn has visually exhausted itself before inspecting it?
5 minutes
What personnel protective measure must be taken when preparing dynamite for burning out of the box.
Use gloves and provide some ability to shower off in case of contact with smoke or fumes
How long of a cool down period is required before cleaning a trench where pyrotechnics were burned?
36 hours or 18 hours if cooled by water
How to you burn dynamite
Single layer not wider in width that length of one stick
Rocket motors greater than ___ in diameter should be treated in accordance with instructions contained in tech manuals applicable to weapons.
8 in
Three methods of disposal by nuetralzation
Dissolution in water
Chemical
Venting
Electrical storm distance?
10 miles OP5
Sand dust and snowstorm within ____ miles a hazard?
5 miles, produces static electrical charge
Describe handling precautions for phosphorous residue such as found in spotting charges on spent BDUs on the Fallon ranges
Do not crush or break crusted phosphorous residue as it may ignite.
Munro effect
Effect produce by shape charge
