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0804 > Fuze Immunisation > Flashcards

Fuze Immunisation Flashcards

0
Q

What does EL AZ represent?

A

Electric impact fuze

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1
Q

What character denotes the series?

A

The second number

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2
Q

What does Zus mean?

A

Addition

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3
Q

What fuze series may have a protective fuze fitted?

A

Series 7

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4
Q

What is meant by fuze immunisation?

A

The process by which a weapon is stopped from functioning - permanently

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5
Q

What are the 3 methods of fuze immunisation, what do they use and against what fuzes?

A

A - BD fluid - Electro Capacitor Resistance (ECR)

C - Salt Solution - Clockwork Fuzes

J - Gelly agent - Mechanical Fuzes

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6
Q

Method A is used against what fuzes?

A

ECR - electro-capacitor resistance

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7
Q

What liquid is used with method A and what is it’s make up?

A

BD liquid,

Benzole 9ltr / methylated spirit 4.5ltr / 23g salt / red dye

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8
Q

What does BD liquid do?

A

Destroys the electrical insulation before allowing a controlled discharge of the electrical current.

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9
Q

What liquid is used in method C and what does it do?

A

Salt solution

Approx 170-200g salt to 1/2ltr of lukewarm water

Solution corrodes and clogs up the cogs with the fuse used to desensitise picrate crystals

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10
Q

How does method C work?

A

A deposit of salt forms around the mechanism preventing functioning operation of the clockwork mechanism

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11
Q

What drill location depth and diameter is required for method C and J

A

Hard against the locating ring.

4mm diameter 12mm deep

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12
Q

What is method J?

A

To stop mechanical fuze.

A binary solution mix begins as a fluid and quickly turns into a solid.

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13
Q

What’s the soak time for method A, C an J?

A

25,45,45 mins

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14
Q

What are the 2 temporary inhibition methods?

A

Method E - Clock Stopper

F - Cryogenic Freezing

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15
Q

What are the contents for BD liquid?

A

2-1 mix

9l Benzole / 4.5l methylated spirit / 23g salt / red dye

16
Q

What measurement is the vacuum pump tested to and for how long?

A

25Hg for 60sec

17
Q

What length is the plastic hose and how much liquid will it hold?

A

Cut to 300mm long and will hold 10cc of fluid

18
Q

What are the two positions on the two way valve?

A

Bomb to pump

Bomb to reservoir

19
Q

What two sizes of drillbits are supplied?

A

2.5mm

4mm

20
Q

What checks are carried out on the bicycle pump?

A

That it can achieve the pressure of 25 psi

21
Q

What will method J do to the fuse?

A

When the binary gelling is mixed it will be a liquid form and will get into the mechanics of the fuse and will then set hard. Prevents movement

22
Q

What is BD liquid pressurised to?

A

25psi

23
Q

What is the salt solution pressurised to?

A

Until the luting leaks

24
Q

What is method J pressurised to?

A

It’s not pressurised

25
Q

What method of immunisation is used against ECR fuse?

A

Method A

0804 (16 decks)

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