107-02 C4 Protective Mask

DESCRIPTION OF LESSONQL2 RECRUIT COURSE (RESERVE)

SUBJECT: NBCD

DATE OF TRAINING PLAN

PREPARED DATE REVISED DATE EO DURATION

CISQFT 07-01 107.02 N.B.C.D..14

1 x 40 min

LESSON OBJECTIVE

1. PERFORMANCE

C4 Protective mask and auxiliary equipment.

2. CONDITIONS

a. GIVEN

(1) C4 mask and carrier;

(2) auxiliary equipment (chemical decontamination mitts, three-way detector papers, nerve agent vapour detector, canister, plug set, auto-injector);

(3) cleaning material;

(4) supervision.

b. DENIED

NA.

c. ENVIRONMENT

NA.

3. STANDARD

Acquire basic knowledge concerning the C4 mask and its equipment.

4. TEACHING POINTS

a. Purpose of the C4 mask;

b. description of the mask and operation;

c. parts;

d. inspection and adjustment;

e. maintenance;

f. C4 mask auxiliary equipment;

g. arrangement of equipment and wearing of carrier;

h. sizes and related problems;

i. auto-injector without needle.

1/19

5. MÉTHOD 6. SUBSTANTIATION

a. EDI a. KNOWLEDGE

STAGE STAGE

b. LECTURE b. SKILLS

STAGE STAGE

c. OTHER c. OTHERS

STAGE STAGE

7. REFERENCE DOCUMENTS

a. B-GS-316-012/FP-001, Chapter 1

8. TRAINING AIDS

a. Classroom;

b. board;

c. C4 masks and auxiliary equipment;

d. auto-injector without needle.

9. LEARNING AIDS (FOR STUDY/ASSIGNMENT)

NA.

10. TEST DETAILS

NA.

11. REMARKS

NA.

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12. CLASS PREPARATION

LESSON PRESENTATION TABLE

EO: 107.02 (NBCD 14) RANK/NAME

REF: a. B-GS-316-012/FP-001, Chapter 1

C4 PROTECTIVE MASK AND AUXILIARY EQUIPMENT

a. Purpose of the C4 mask;

b. description of the mask and operation;

c. parts;


e. maintenance;

f. C4 mask auxiliary equipment;

g. Arrangement of equipment and wearing of carrier;

h. sizes and related problems;

i. auto-injector without needle.

TIME: COURSE: QL2 RECRUIT

3/19

INSTRUCTOR’S NOTES

LESSON PLAN

I – INTRODUCTION

1. SAFETY PRECAUTIONS (IF APPLICABLE)

NA.

2. REVIEW OR APPROACH (IF APPLICABLE)

Question #1

Who is most likely to survive an NBC attack?

Answer #1

Those with the best training.

Question #2

Who is responsible for warning you in the event of an attack?

Answer #2

The unit.

Question #3

What attacks are indicated by a local alarm?

Answer #3

a. air; or

b. NBC.

3. WHERE, WHAT, WHY

During the next two lectures, you will learn the features of the C4 mask and its operation, its parts, its auxiliary equipment, its maintenance and adjustment, its effectiveness and associated problems, and the atropine auto-injector.

You will need this knowledge to use your mask and its equipment correctly.

Throughout your military career, you will have to face an almost constant threat of NBC attacks. It is therefore essential that you be fully familiar with your equipment.

4. TEST - AT THE END OF THE LESSON AFTER DEMONSTRATIONS OR WHEN PRESENTATION IS COMPLETE ACCORDING TO STANDARDS (IF APPLICABLE)

a.

b. THERE WILL BE A PERFORMANCE CHECK ON:

5. CONDUCT OF THE LESSON

The lesson consists of four stages.

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6. IN LESSON CHECK

If you have any questions, raise your hand; and when I ask a question, don't all answer at once.

7. PRECAUTIONS TO BE TAKEN DURING THE LESSON

NA.

NOTES

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II- BODY

STAGE 1

1. Introduction to Stage

Let's now look at the purpose, capabilities and limitations, and description of the C4 mask.

2. Presentation/Development of TP

a. Purpose

Properly applied, the C4 protective mask is designed to protect the eyes, nose throat, lungs and facial skin against chemical and biological agents, radioactive dust and smoke grenade screens.

b. Features

The protective mask is adjustable and comes in four sizes. Even through it provides protection against many things, it was not designed to replace oxygen or to provide protection against carbon oxide and ammonia vapour. It must not be used for fire fighting or for protection against paint odours or lacquer vapours.

c. Description

(1) Flexible rubber face piece;

(2) shatter-resistant eyepiece lenses;

(3) two canister mounts;

(4) canister;

(5) head harness consisting of six straps attached to a pad, bottom two adjustable;

(6) speech transmitter and protective screen;

(7) inhalation and exhalation equipment and valves;

(8) nose cup;

(9) water straws.

6/19


d. Operation

Let's now start with the circulation of air inside the mask. Take your masks in your hands and follow as I explain :

(1) the fact that the mask is air-tight forces the air through the canister where it is filtered;

(2) from there, the air goes through the inlet valve on the face piece and circulated in front of the lenses to dry any fogging which may have formed. The air then continues through the nose cup inlet valve into the body's respiratory system;

(3) in exhaling, the outlet valve located in the speech transmitter opens and the inlet valve closes simultaneously to prevent warm air from returning to the lenses, which could cause them to fog;

(4) if the nose cup is improperly adjusted, air returning into the mask will also cause fogging in the lenses, thus obstructing vision.

e. Canister

As we have seen, the air we breathe must pass through a filter in order to be purified. This filter is called a canister. Let us now look at the inspection and installation of the canister on the C4 mask. Before inserting the canister, the first thing you must do it to inspect it for the following reasons :

(1) bumps;

(2) corrosion;

(3) shake it and listen. If the charcoal moves, this is a sign of internal damage.

NB : If your canister displays one of these symptoms, you must change it immediately, as it would give you no protection and your life would be in danger.

f. Installation

(1) Inspect the canister in the way you have been taught;

(2) engage the canister in the mount on the face piece, taking care to engage the netting appropriately, screw it fully home by hand as far as it will go without forcing it;

(3) a canister that has been improperly tightened is one of the most frequent causes of leaks, and this will give you no protection.

7/19


3. Confirmation (of the Stage)

a. Questions from the class

b. Questions to the class

Question #1

Does the C4 mask protect us against carbon oxide?

Answer #1

No.

Question #2

What and against what does the C4 mask protect?

Answer #2

It protects eyes, nose, throat, lungs and skin against chemical and biological agents, radioactive dust and smoke grenade screens.

Question #3

Name the causes of fogging on the eyepiece lenses :

Answer #3

(1) Nose cup not properly adjusted;

(2) defective nose cup inlet valve.

Question #4

What do we check for when inspecting the canister?

Answer #4

(1) bumps;

(2) corrosion;

(3) movement of the charcoal inside.

8/19


STAGE 2


Now that you know how the mask works, we are going to see how and why to inspect it, how to adjust and determine the size of the mask as well as problems associated with the C4 mask.


a. Mask inspection

Everyone is responsible for examining its own mask when it is issued and once a month thereafter. A complete inspection shall be performed as follows :

(1) follow the path of the air in the face piece and examine each part in succession;

(2) check the lenses for breakage;

(3) check that the face piece rubber is not punctured;

(4) check that the nose cup fits tightly onto the face piece;

(5) check that the pad and straps are firmly attached to the mask and that they are not reversed, not stained with mildew and have not lost their elasticity. Check that the buckles are intact and firm and that the setting has not been changed;

(6) inspect the canister in the way you have been taught.

NB : If your mask is damaged for any one of these reasons, do not hesitate to get it replaced as your life depends on it.

b. Sizing the mask

(1) Let's now look at the sizes and how to size your mask.

(2) The size of the mask can be determined using the face measurer. There are four sizes of mask :

(a) extra small;

(b) small;

(c) medium;

(d) large.

(3) The size of the mask is embossed on the outside of the face piece.

9/19


(4) If a face measurer is not available, or to check whether your mask is the correct size after you have adjusted it, go through the following steps :

(a) take a normal size mask and extend the straps so that the mask moves freely around your face;

(b) place the mask on your face, holding it pressed firmly with the hand and centre the pad at the back of your head;

(c) check that your eyes are centred in the lenses, using a mirror, or ask someone else for help;

(d) if the pupils are centred, the size is right; if they are above centre, the mask is too small and if they are below centre, the mask is too large.

c. Adjusting the mask

Let's now see how to adjust the mask. Once the size has been determined, the mask is adjusted as follows :

(1) insert the canister into the mask;

(2) tighten the head harness so that the mask moved freely up and down on your face;

(3) put the mask on and hold it pressed to the face;

(4) with your other hand, centre the harness pad on the back of your head and begin to adjust the two bottom straps;

(5) if the centre straps touch your ears, exchange the mask for a larger size;

(6) to check whether your mask is airtight, place the palm of your left hand on the canister opening and breathe. If the mask sticks to your face and stays there, is it airtight. If it is not, it will come off (ten-second airtight test).

NB : Never lend your protective mask to anyone else. If your mask is defective, exchange it immediately.

d. There are a number of problems associated with the C4 mask :

(1) wearing spectacles, although this problem can be solved by wearing combat lenses;

(2) facial distortion;

(3) wearing a beard can cause 5% leaks;

(4) cold weather :

(a) check each other for frostbite around the face piece;

(b) blockage of the outlet valve.

10/19


3. Confirmation (of stage)



Question #1

When must you inspect your mask?

Answer #1

When it is issued and at least once a month thereafter.

Question #2

The mask comes in how many sizes?

Answer #2

(1) Extra small;

(2) small;

(3) medium; and

(4) large.

Question #3

What is done to check if the mask is airtight?

Answer #3

To check whether your mask is airtight, place the palm of your left hand on the canister opening and breathe. If the mask sticks to your face and stays there, is it airtight. If it is not, it will come off (ten-second airtight test).

Question #4

Name some of the problems associated with the mask :

Answer #4

(1) Wearing spectacles;

(2) facial distortion;

(3) left-handed shooting;

(4) cold weather.

11/19


STAGE 3


Let us now look at care, maintenance and the procedure for disinfecting the protective mask.


a. Regular cleaning (disinfection)

Periodic cleaning disinfects the mask and shall be carried out under supervision at intervals of no more than six months or when :

(1) personnel contract or are exposed to a contagious disease;

(2) the mask returns from or is returned to stores;

(3) as required by a medical officer.

b. Procedures

The procedure for periodic cleaning of the protective mask is as follows :

(1) remove the canister;

(2) bathe the mask in a disinfectant solution;

(3) rinse thoroughly with clean water;

(4) dry the mask with a clean cloth;

(5) check that the valves are in place;

(6) leave to dry.

NB : Never hang the mask by its straps and never turn it inside-out to dry.

c. Carrier and auxiliary equipment

Let's now look at the carrier and the various pieces of NBC equipment associated with it.

(1) Carrier

As with your mask and canister, the first thing to do when you are issued your carrier is to inspect it. Check for the following damage :

(a) mildew;

(b) punctures;

(c) tearing.

(2) Description

The carrier was designed to carry and protect the mask and auxiliary equipment against dust and moisture. It is equipped with a set of detachable and adjustable belts for attaching the case to the body. VELCRO fasteners are used to fix the straps or to attach it directly to your belt. It also has two pockets, one on the side and one at the front.

12/19


(3) Auxiliary equipment

Let's now look at the auxiliary equipment carried in the carrier.

(a) Detector papers

Detector papers are used for detecting liquid chemical agents only. The colour changes depending on the agent with which the paper comes in contact.

i. (G) nerve agent : orange to pale yellow, non-persistent;

ii. (H) blistering : minor variations in the shade of red;

iii. (V) nerve agent : pale or dark green (eg : traffic light);

NB : If the paper is damp, it will not give colours, which are a true indication, but it will recover its properties once it dries.

NB : Detector papers can also respond to insecticides, insect repellent, antifreeze, etc.

(b) Nerve agent vapour detector

A sealed bag contains a detector, the operating instructions and a silica gel against moisture. The detector is used to check for the presence of nerve agent gas in the form of vapour only and must be used only on the orders of your commanding officer.

NB : Always check the expiry date on the bag before use.

DEMONSTRATE TO THE CLASS

(c) Chemical decontamination mitts

Your carrier contains two separately wrapped mitts in sealed envelopes. They are designed to decontaminate the skin and personal equipment. The mitt is held in the right hand. It contains a powder (fuller's earth) which is released through the texture of the cloth. The powder absorbs surface liquids without affecting the skin and eyes.

(d) Auto-injector

In wartime, every individual will be issued three atropine auto-injectors to counteract the effects of nerve agents. There are three types of auto-injector :

i. training without needle : green;

ii. training with needle : blue;

iii. real atropine : yellow/gold.

NB : Atropine freezes at almost the same temperature as water. It is therefore important to carry them close to your body in winter.

DEMO Do a demonstration and have the student’s practice with the green auto-injector.

13/19





Question #1

When must you disinfect your mask?

Answer #1

(1) When you contract a contagious disease;

(2) when the mask returns from or is returned to stores;

(3) when required by the medical officer.

Question #2

What colour does the vapour detector turn in the presence of nerve agent vapour?

Answer #2

White or another colour.

Question #3

The detector paper is used to detect chemical agents in what form?

Answer #3

Liquid only.

Question #4

What precautions must be taken in winter with atropine auto-injector?

Answer #4

They must be carried close to the body to avoid freezing.

Question #5

What colour does the detector paper turn in the presence of a liquid nerve agent?

Answer #5

(1) When you contract a contagious disease;

(2) when the mask returns from or is returned to stores;

Green (persistent);

14/19


STAGE 4


Let's now look at the stowage of equipment in the carrier and ways to carrying the carrier.


a. Stowage of equipment

The carrier has two pockets that are divided into small compartments.

(1) The front pocket contains :

(a) 2 booklets of detector papers;

(b) 2 nerve agent vapour detectors;

(c) 2 decontamination mitts.

(2) The side pocket contains : the three atropine auto-injectors.

b. How to stow the mask in the carrier

(1) Hold the mask by the speech transmitter in your right hand;

(2) place the straps inside the face piece;

(3) open the carrier and hold it open with your left hand;

(4) push the mask inside the carrier with the canister first and the lenses pointing upward.

NB : Always keep the carrier closed, whether or not the mask is in it, to prevent contamination from entering.

c. Wearing the carrier

(1) The carrier must be placed so that the individual can remove the mask as quickly as possible. The position adopted will depend on three factors :

(a) the threat;

(b) the individual task;

(c) the way the equipment is worn in the unit.

(2) The carrier may therefore be worn in three ways :

(a) on a shoulder strap;

(b) on the chest;

(c) on the belt.

15/19





Question #1

What part of the mask always goes into the carrier first?

Answer #1

The canister.

Question #2

The position of the carrier depends on three factors. What are they?

Answer #2

(1) The threat;

(2) the individual task;

(3) the way the equipment is worn in the unit.

16/19


FINAL SUMMARY

KNOWLEDGE ACQUISITION LESSON

1. DURING THIS LESSON, YOU HAVE LEARNED (TP):

a. The purpose of the C4 mask;

b. description and operation;

c. parts;


e. maintenance;

f. auxiliary equipment;

g. stowage of equipment;

h. associated problems;

i. auto-injector.

2. REVIEW YOUR NOTES.

3. DO YOU HAVE ANY QUESTIONS?

4. CLOSE YOUR NOTEBOOKS.

SKILL LESSON

1. PRACTICE THE ENTIRE LESSON AND THEN PRACTICE UNDER TEST CONDITIONS.

2. DO YOU HAVE ANY QUESTIONS?

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III- TEST

1. INSTRUCTIONS

a. TYPE OF TEST:

b. MINIMUM PASS NOTE:

c. TIME ALLOTED:

d. CONDITIONS:

(1) GIVEN:

NA.

(2) DENIED:

NA.

e. QUESTIONS ALLOWED/DENIED

f. SPECIAL REQUIREMENTS

g. ACTIVITIES FOLLOWING THE TEST

When you have finished, turn down your sheet.

h. QUESTIONS ON INSTRUCTIONS

2. APPLY THE TEST

3. CORRECTIONS/RESULTS (ACCORDING TO TYPE OF LESSON)

18/19


IV- CONCLUSION

1. RESTATE THE WHAT

Today we have seen :

a. The purpose of the C4 mask;

b. description and operation;

c. parts;


e. maintenance;

f. auxiliary equipment;

g. stowage of equipment;

h. associated problems;

i. auto-injector.

2. SUMMARY OF IMPORTANT POINTS

Results of performance on the final confirmation. Cleaning, maintenance and inspection of the mask and its auxiliary equipment is essential to ensure they work properly. Make sure you do it and it will give you the degree of protection required.

3. RESTATE THE WHY

Remember that an improperly fitting or damaged mask gives you no protection whatever and that your death will soon follow.

4. REMOTIVATE SOLDIERS ACCORDING TO THEIR EFFORT AND STANDARD ACHIEVED

5. DISTRIBUTE LEAFLETS, ASSIGNMENTS OR READING MATERIAL

6. NEXT LESSON

a. WHAT:

b. WHEN:

c. WHERE:

d. WHO:

7. SAFETY PRECAUTIONS (IF APPLICABLE)

19/19

107-02 C4 Protective Mask

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