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AT Course_NE > LAD > Flashcards

LAD Flashcards

1
Q

Types of Natures can be burnt? (4)

A
  • Propellant
  • Gunpowder - bulk, charges and igniters
  • SAA, Pyrotechnics and Primers
  • HE Projectiles
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2
Q

How many SAA and HD 1.4 can be burnt? and what is the safety dist from site and between sites? (3)

A
  • 100kg NEQ
  • 100m Safety Dist
  • 150m between sites.
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3
Q

Types of SAA/Pyro/Primers can be burnt? (7)

A
  • SAA up to 20mm, excluding HE, HEIT or similar.
  • Sig and Illum Carts
  • Primers SA Carts
  • Primers elec and Perc
  • Primary Carts
  • Matches
  • FBT
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4
Q

Methods of SAA Burning? (2)

A
  • Drum

- Trench

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5
Q

Quantity limits for SAA Burns for Drum and Trench? (2)

A

Drum: 6000 rnds
Trench: 12000 rnds per square metre at depth of 0.6m

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6
Q

When can the quantity of SAA burns be varied?

A

At discretion of OIC in cases where previous prac experience indicates that increases in quantity are safe and efficient.

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7
Q

How much propellant can be burnt? and what is the safety dist from site and between sites? (4)

A
  • 500kg NEQ
  • 100m
  • 50m
  • 24 before same site can be used.
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8
Q

What are the limitations of laying bagged charge propellant? (4)

A
  • Laid out in line toward the wind
  • Single layer, max width 4m
  • Reducing to width 3 bags.
  • Igniter to igniter at ignition point when using elec or when meets trail.
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9
Q

What are the limitations of laying loose propellant? (4)

A
  • Laid out in line toward the wind
  • Max width 1m
  • Reducing to single stick at point of initiation
  • 2m long from point of initiation to width of 30cm
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10
Q

How can you initiate propellant burns and what is the misfire soak time? (3)

A
  • Electrical (ITBFE)
  • Propellant trail (matches)
  • Misfire 30min soak time
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11
Q

What actions do you need to do before and after a propellant burn? (1) (5)

A

Before:
- Site inspected and removal of extraneous material then watered down.
After:
- Site well watered down
- All fires extinguished
- Unburnt igniters collected with non-ferrous tools
- Unburnt propellant collected and burnt separately
- Removal of extraneous material and watered again.

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12
Q

How do you dispose of Pressfit Primers? (3)

A
  • Arrange in Row laying down of standing primer up.
  • secure sufficient single strands of detcord to cover primer base.
  • OIC to ensure all CC are functioned prior to FFE.
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13
Q

What are the special precautions for WP? (10)

A
  • Pers familiar with immediate treatment of WP burns
  • Plentiful supply of water readily available
  • Min 20L sterilised water reserved for WP burns
  • Retired position to be upwind of dems site
  • Open range safety dist to be applied
  • Boots and implements to be passed through a fire
  • No approach until 10mins post last smoke seen
  • Remain standing during clearance phase
  • Sleeves down and fasted at wrists.
  • Gas masks and heavy-duty leather gloves to be worn when approaching and during site clearance.
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14
Q

What ammunition fits into what layer in dems LAD? (5)

A
  • Bottom Layer: ammo containing sml qty of HE
  • Second Layer: Hvy cased ammo
  • Third Layer: light cased ammo
  • Top Layer & around stack: bulk Explosives
  • Centre of Stack: ammo with smoke composition
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15
Q

Why should LAD be confucted below the ground? (4)

A
  • Minimise the effect
  • Minimise the effect of frag
  • Enhance the effect of the dem charge
  • Assists in the containment should partial det occur
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16
Q

What is Tamping and it’s purpose?

A
  • Covering demolitions with packed earth/sandbags
    Purpose:
  • ensure ammo remains in close contact
  • stabilised stack during multiple detonations
17
Q

What disposal method is used for large calibre projectiles to reduce shock, blast and projected frag? (2)

A
  • Post hole Method (Undercut method)
18
Q

What are the minimum dimensions of post hole? (3)

A

Dia: 30cm
Depth: 1.5m approx
Dist between holes: 2m

19
Q

What are the considerations of undercut method? (4)

A
  • Time and manpower
  • HE items to be destroyed
  • Condition of ground
  • Integrity of undercut
20
Q

Stuckfast Charge Diagram:

A 
Left:
- Charge withdrawal cord
- Tape Bridle
- Styrofoam container
- Blasting cap
- Ejection charge
- Tape wrap
Right:
- Cap lead
- Tape
- Dimension 'A' (dist between centre of chge and top of container)
- Water passage chanels
21
Q

Diagram of Primed projectiles:

A 
X = Primed. O = Unprimed.
     XXX
   OOOO
  XOXOX
 OOOOOO
XOXOXOX
22
Q

What are the two categories of stuck fast projectiles and their causes and who’s responsible? (2)

A
  • Simple Case (no shot travel: misfired/unload with DB engaged). - Unit responsibility
  • Abnormal Case (shot travelled and become stuck, failure of obturation) - AT Responsibility
23
Q

Methods for simple case and abnormal case stuck fast projectiles? (2)(1)

A 
Simple:
- Ejection by firing
- Mechanical Ejection
Abnormal:
- Use of an ejection charge.
24
Q

At what distance is the charged placed in the barrel for stuck fast projectiles? (1)

A
  • 457mm from projectile.
25
Q

What are alternate methods for charges used for stuck fast proj in thin walled barrels? (2)

A
  • 1 or more .50cal elec carts

- elec detonators

26
Q

Max limits and requirements of burning gunpowder? (2)

A 
- 25kg and wetted prior to disposal
(8L sufficient for 25kg)
- 7kg max per metre laid
- Non-ferrous tools to be used
- 50m safety dist upwind
- elec initiation
27
Q

What HE natures can be disposed of by burning? (3)

A
  • 155mm Howitzer
  • 105mm Howitzer
  • 81mm Mortar
28
Q

What is to be removed from HE natures prior to burning? (5)

A
  • Primary/Augmenting charges
  • Tracers if screw fitted
  • Metal fuze cups
  • Red Phos smk boxes
  • Exploders of Boosters
29
Q

What is the distances/layout/qty limits for burning of HE natures? (5)

A
  • 1/2 calibre between rows
  • 1 calibre between adjacent proj
  • Laid so burning is downwind
  • Not more than 20 per group
  • Groups not less than 0.6m apart
30
Q

Limitations for disposing of detonators? (

A
  • Place in wooden box in pit
  • No more than 6 tier high
  • Sawdust used for stability
  • Commercial cardboard packaging can remain
  • Dets placed on last
  • Don’t tamp.

AT Course_NE (23 decks)

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