Definitions

Question 1

What does BODR mean

Answer 1

The overpressure above the ambient pressure in a blast wave at a given distance. Blast overpressure distance range

Question 2

What does HFDR mean

Answer 2

the minimum withdrawal distance for protection from hazardous primary and secondary frag. hazardous frag distance range

Question 3

what does MFDR mean

Answer 3

the range to which primary and secondary frag from the PES are not expected to travel beyond.

Question 4

Primary Frag

Answer 4

frag that is in direst contact with an explosive fill

Question 5

Secondary frag

Answer 5

frag picked up by primary frag and the blast

Question 6

what is a camouflet

Answer 6

An underground cavity formed when EO penetrates the earth to a depth where the explosion is small enough not to penetrate the surface

Question 7

what are the 3 types of camouflet

Answer 7

deep
shallow
collapsed

Question 8

6 methods of protective works

Answer 8

trenching
venting
buttressing
walls
surrounds
mounding

Question 9

3 methods against earth shock

Answer 9

trenching
venting
buttressing

Question 10

trenching must be to at least 300mm below the installation to be protected

Answer 10

FALSE

Question 11

2 types of landmines

Answer 11

AT

AP

Question 12

how deep must a bomb be to be considered buried

Answer 12

2 to 2 and a half times its length

Question 13

2 conditions must be satisfied before trenching can be used as a means of protection against earth shock

Answer 13

trench to be located outside the expected crated area

trench to be located within the radius for earth shock damage from the explosion

Question 14

4 phases of BT clearence

Answer 14

Recon
Entry
Search
Clearence

Question 15

Anti vehicle BT are operated by a switch with a approx EO content of 0.25g

Answer 15

FALSE

Question 16

4 methods of operation for the F1A1 BT

Answer 16

pressure
pull
pressure release
tension release

Question 17

4 types of incident that an EOR may be sent to recce

Answer 17

explosion
camouflet
UXO - surface and buried
false reports
hoax

Question 18

When a BT has been disturbed by remote means, what is the soak time

Answer 18

20 mins

Question 19

difference between a deep and shallow camouflet

Answer 19

deep - may have no evidence on surface, possibly a blackened entry hole and the sound/smellof gasses being vented

shallow - upward heave of the surface and cracks on the surface

Question 20

4 options available during BT clearence phase

Answer 20

pull with hook and line
destroy in situ
disrupt
neutralise and disarm

Question 21

venting as a means of protective works is most ideal when blast and frag are a threat

Answer 21

FALSE

Question 22

5 methods of BT operation

Answer 22

pull
pressure
pressure release
tension release
delay

Question 23

if a BT is to be deliberated initiated, its full extent must be known before any action

Answer 23

TRUE

Question 24

the minimum distance essential personnal can evacuate to is 50m

Answer 24

FALSE

Question 25

shear pin and electrial contact are 2 principles of operation for a BT. name more (4 others)

Answer 25

``` ballcontrol pin or plate withdrawal chemical electrical reaction chemical reaction friction inertia ```

Question 26

ADF IEDD doctrine - 4 ideas

Answer 26

philosophy aim of IEDD principls mandatory actions

Question 27

IEDD philosophy

Answer 27

save life return to normality preserve and collect evidence preserve property

Question 28

IEDD principles

Answer 28

``` where possible, use remote means. Manual Render safe is a last resort mandatory soak times observed operations pre planned catagorise tasks minimum time over target RSP by disruption is primary option revert to remote means whenever possible ```

Question 29

other agencies Involved in IEDD operations

Answer 29

``` Int cell Ops staff PR officer Engineer search aviation imagery assets dogs helicopters ```

Question 30

Components of an IED

Answer 30

``` switch power source initator main charge container ```

Question 31

6 considerations when taking into account protective works

Answer 31

``` type and size of UXO position of uxo soil composition screening or funnelling effects safety distances whether structure is outside the crater area ```

Question 32

what are indications of an explosion

Answer 32

``` witness reports of sound of detonation, smoke, or flash residual smell or black deposits widespread breakage of windows presence of primary frag craters evidence of earth shock cracking of the ground ```

Question 33

2 types of IED switch

Answer 33

arming | firing

Question 34

3 types of firing switch

Answer 34

command time VO

Question 35

3 types of arming switch

Answer 35

command time VO

Question 36

2 types of initiators

Answer 36

elec, non elec military conventional improvised

Question 37

2 types of command system IEDs

Answer 37

linked | seperated

Question 38

types of linked systems

Answer 38

command wire command pull explosive link projectile command

Question 39

types of seperated systems

Answer 39

radio control light command projectile command

Question 40

4 parts of a mine

Answer 40

firing mechanism to set of detonator or igniter charge detonator or igniter to set off booster charge booster charge attached to fuse/igniter or part of the main charge main charge in a container, usually forms the body of the mine

Question 41

4 ways mines are actuated

Answer 41

pressure pressure release tension tension release

Question 42

types of spring operated igniters

Answer 42

``` pin plate or ball diaphgram shear pin electric contact chemical control chemical reaction friction double pressure anti handling device ```

Question 43

types of AP mines

Answer 43

blast frag bounding directional bounding

Question 44

types of AT mines

Answer 44

blast | shaped charge

Question 45

definition of booby trap

Answer 45

explosive or non explosive dvice or other material delibertely placed to cause casualties when an apparently harmless object is disturbed or normally safe act is performedz

Question 46

3 criteria of a booby trap

Answer 46

contains military ordnance or devices only military ordnance or devices may only be incorporated to function as designed only must not incorporate or have working in conjunction with a secondary explosive device

Question 47

tactical effects of BTs

Answer 47

create a sense of uncertainty or fear lower morale to engender a sense of caution and fear causing frustration

Question 48

2 catagories of BT's

Answer 48

VO, | delaed action

Question 49

5 methods of operation of BT's

Answer 49

``` pull pressure pressure release tension release delay ```

Question 50

3 uses of BT's

Answer 50

in the offense, defence, and withdrawal

Question 51

building clearence safety precautions

Answer 51

avoid fatigue door and windows not opened till both sides checked obstacless and furniture pulled remotely all items found clear must be marked and left in accesible position all safe routes clearly marked torches not used unless light sensitive devices discounted remainder of team in ICP while operator conducts positive action

Question 52

what are procedures around manual disarm

Answer 52

check complete system for alternative means of firing all wires traced to both ends if possible, cut the link between switch and main charge when delay encountered, anti handling may be present

Question 53

definition of IED

Answer 53

devices placed or fabricated in an improvised manner, that incorporate destructive, lethal noxious, pyrotechnic or incendiary chemicals designed to destroy disfigure incapacitate harrass or distract. may incorporate mil stores, but usually non mil

Question 54

4 types of craters

Answer 54

A, B and C, splash A on or near surface B and C - penetration prior to detonation, C has collapsed sides, Splash - large UXO hitting surface and dislodging debris before penetration