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Below are photos and the details about the Mask.
These are Russian-made high-quality civilian gas masks GP-5, designed to protect from nuclear, biological and chemical (NBC) agents. These protective masks are intended to protect the respiratory organs, face and eyes from the effects of toxic agents, radioactive dust and bacteriological aerosols. Operating conditions: all weather, with ambient temperatures ranging from -40° F to +147° F. THE PROTECTIVE MASKS SPECIFICATIONS:
Breathing resistance of no more than 18 mm H2O
The present technical description and the maintenance guide determine GP-5 civil filtering protective mask arrangement and purpose, are the manual on learning and teaching using it as well as establish its maintenance order, storing and eliminating faults.
1.1. GP-5 filtering protective mask is intended for protecting man’s breathing organs, eyes and face against radioactive agents and bacterial (biological) means.
2. PROTECTIVE MASK SET AND ITS TECHNICAL DATA
2.1. GP-5 protective mask set consists of GP-5 anti-gas box, ShМ-62У or ShМ-62 face part, a bag and unmissed films box (UF).
2.2. UG-5 protective mask should have the following technical parameters:
a) the collected protective mask weight, kg, not more than – 0.9;
b) the anti-gas box (equipped) weight, kg, – 0.25;
c) the face part weight ShМ-62, kg, – 0.43
d) the protective mask size when placed in the bag, – 120x120x270,
f) anti-gas box (equipped) resistance to the constant airflow
30 l/min, mm, water column not more than – 19;
g) the face part resistance to the constant air flow 30l/min:
¨ when breathing in, mm water column, not more
¨ when breathing out, mm water column, not more
h) the protective mask resistance to the constant air flow 30l/min;
¨ when breathing in, mm water column, not more
¨ when breathing out, mm water column, not more
i) the protective mask should be sealed at extra pressure of 100 mm mercury column – when checked in a water bath during T + 15 sec – the box surface should evolve air bubbles;
j) the face part should be sealed at rarefaction of 120 mm water
column and should not allow liquid level dropping in either column of the manometer more than 18 mm during a minute.
3. PRINCIPLE OF OPERATION AND ARRANGEMENT
3.1. The protective mask action principle is based on the fact that the used breathing air is preliminarily purified (filtered) of the poisonous radioactive and bacterial (biological) means in the anti-gas box.
For this purpose the anti-gas box is equipped with a special absorber and aerosol-discharging filter.
3.2. The anti-gas box has a cylindrical form. There is a threaded neck to connect the box to the protective mask face part and there is a round hole in the box bottom to allow breathed in air access.
3.3. The protective mask face part provides the air purified in the anti-gas box to access the breathing organs and protects the eyes and face against poisonous radioactive agents and bacterial (biological) means.
3.4. Face part К-62 valve box is intended for the division of the breathed in and out air streams.
The breathing in valve and two breathing out valves (the main valve and the additional one) are mounted in the valve box.
The breathing out valves are the main ones and at the same time the most vulnerable parts of the valve box as their faults such as blocking and freezing results in the outside contaminated air access under the mask space bypassing the anti-gas box.
3.5. The bag is intended for keeping and carrying the protective mask.
The bag has a shoulder tape (with movable clasps) to wear the protective mask on the shoulder and a tape to fasten the protective mask on the body.
Besides the bag has a flat pocket and two bulky pockets. The flat pocket is intended for keeping the boxes with films that do not get misted, the first bulky pocket – for a dressing package, the second one for an individual antichemichal package.
3-6. The set of unmissed films is intended for the protection of glasses from getting misted.
4. CHOOSING AND PREPARING THE FACE PART
4.1. Preparing the protective mask for using begins with determining the size of the face part.
4.2. Choosing the face part is done according to the size that is determined by measuring the head on the closed line that goes through the crown, chin and cheeks (fig. 2). The figure is rounded up to 0.5 cm.
The result of measuring in cm The helmet-mask size
4.3. The correctly chosen face part should fit closely to the face and exclude the outer air penetration into the breathing organs bypassing the protective box.
4.4. Before donning the protective mask when staying in one should clean its outside and inside with a damp cloth or cotton wool and the breathing out valves should be purged.
4.5. The face part used by some other person should be disinfected with methylated alcohol or two percent formalin solution.
5. Checking the protective mask set and its working order
5.1. Checking the protective mask set and looking it over and checking its being hermetic as a whole when getting and using it does its working order.
5.2. The visual inspection of the protective mask should be done in the following order:
a) take the protective mask out of the bag;
b) check the helmet-mask to be whole, for that purpose stretch it a little and inspect it, the places of found cuts and tears should be marked with an ink pencil or pen;
c) check whether the glasses are whole and the fairing and the packing ring are available and in a working order;
d) inspect the valve box to be sure that it doesn’t have any dents, cuts, corrosion, check the availability and state of the valves ( they should not be blocked, corroded or cut), check the availability of the packing rubber ring in the neck of the box;
e) Inspect the protective box and check whether it has any cuts, corrosion and whether the neck and the cover are dented.
f) inspect the protective mask bag whether it is whole, whether all its parts (loops, buttons, clasps, the shoulder and waist tapes) are available and in a working order;
g) Check the availability of the box with unmissed films.
To find the faults in the protective mask screw the protective box out of the face part and check the availability and correct positioning of the packing rubber ring in the neck of the box.
When the fault is eliminated collect the protective mask, don it and check it up again.
5.4. If air gets under the face part, when checking it for a second time screw out the protective box, cover the hole of the valve box neck and take a deep breath. If it is impossible to breathe, the face part is chosen correctly and in a working order. If air gets under the face part, it is either out of order or chosen incorrectly.
To eliminate the fault purge the breathing out valves and again check the face part. If air gets under it should be changed.
5.5. After checking the face part it is necessary to check the working order (being hermetic of the protective mask as a whole. To do that put the rubber plug in or cover the hole in the box bottom with your hand and take a deep breath. If air does not get under the face part, the protective mask is hermetic. If air gets there, the protective box is out of order it should be substituted with a new one.
5.6. The final inspection of the correct choice of the face part and the protective mask being in a working order is carried out in a special tent under the guidance of specially trained experts.
5.7. If it is impossible to eliminate the faults that were found during inspection, it should be substituted. If the protective mask set is not complete, it should be completed or substituted.
6. Protective mask collecting and packing
6.1. Protective mask collecting should be done in the following order:
a. take the protective box, screw the cup out of the neck and pull the plug out of the box bottom (the cup, the packing and the plug should be put into the bag);
b. take the face part and insert unmisty films into the glasses frame;
c. Take the face part with your left-hand protective box into your right hand and screw the latter into the neck of the valve box to the stop.
6.2. Pack the protective mask into the bag in the following way:
a) put the face part together, for this purpose take the glasses with one hand and put it alongside with the other hand cover one part of the glasses with it then put the face part across covering the other part of the glasses;
b) put the protective mask into the bag with the box downward and the face part upward;
c) put the upper part of the bag so that the sidewalks were put inside turn it in the direction of the buttons, button the bag and both pockets.
Packing the protective mask in different ways is permissible if the mask is protected and it can quickly be put into operation.
7. Protecting the glasses against misting
7.1. The moisture of the breathed out air can condense on the inner surfaces of the glasses when the protective mask is used.
The condensation will be higher if the difference of the surrounding air and the air under the mask is higher.
If the temperature of the surrounding air is higher than 0°C, the glasses will be misted, if it is below 0° the glasses may freeze.
7.2. To protect the glasses from misting and freezing unmissed films or a special “pencil†can be used. Warming seals are put onto the glass frame of the face part when the temperature is below -10°C.
7.3. Unmissed films are inserted into the glass frame with the misting side contacting the glass.
Unmissed side is determined by breathing out onto both sides.
7.4. To insert the unmissed film into the glasses frame take out the sealing ring, clean the glass with a cloth holding the unmissed film at the brim with the shear directed at the palm, bend it a little and put it into the glasses frame.
The inserted unmissed film should be fastened with the ring in such a way that the ring shear be directed to the fairing.
Unmissed films may be used several times so after doffing the mask they should be dried without taking them out of the frame and touching them with fingers or any things.
7.5. The box with unmissed films should be kept closed to protect the films from moistening. The cover and the box joint should be bound with insulating tape after each opening the box.
7.6. When unmissed films are not available the glasses are lubricated with a special “pencilâ€. Before lubricating the glasses should be cleaned with a cloth, after that 5-6 “pencil†dashes looking like a net should be put on the surface of the glass, then after breathing out onto the glass the lubricant should be distributed on the glass in a uniform way until the glass is transparent. The unmasking of the glass should be checked by a second breathing out onto the glass. If the glass is misted lubrication is repeated.
7.7. Fairings also protect glasses against misting, they allow purging the glasses inner side with the outer air, which has passes through the protective box.
Warming sealing are distributed in advance (two per a protective mask) and are put on the face part. To put them on one should turn up the whole brim of the rubber seal to the stop and clean the glass with a cloth then put the seal to the frame of the face part.
8. Protective mask maintenance rules
8.1. The reliability of protecting a man against poisonous and radioactive compounds as well as against bacteriological (biological) means depends on both working order of the protective mask and skillful using it.
That is why one should learn to put it into the right position in advance.
8.2. The protective mask can be in three positions: in a camping position, in a ready position, in a working position.
8.3. To put the protective mask in a camping position:
a) put the bag with protective mask on your shoulder so that it be on your left side and the button be off you;
b) adapt the shoulder tape using the clasps so that the upper brim of the bag be on the level of the waist belt;
c) unbutton the bag, take out the protective mask, check the reliability of the protective box and the face part juncture, the state of the glasses, valves, clean the dirty glasses with a cloth or cotton wool, substitute non-transparent unmissed films;
d) put together the face part and put the protective mask into the bag and button the latter;
e) move the protective mask a little back to avoid interference when walking. If necessary the protective mask may be fastened on the body with tape.
8.4. The protective mask is put into a ready position from a camping position when there is a threat of a nuclear, chemical or bacteriological (biological) attack. For this
a) move the bag forward to take the protective mask out of it;
c) prepare to take your cap off to don the face part on the head.
8.5. The protective mask put into working position in advance after the command of the senior head or at once after the signal (command) “Gases†and when detecting the enemy’s using chemical and bacteriological (biological) weapons or when radioactive compounds precipitate from the nuclear explosion cloud. To do that
a) keep your breath, close your eyes;
b) take off your cap and put it either between your knees or nearby;
c) take the protective mask out of the bag, take its thickened brims at the chin part of the helmet-mask with both hands so that the thumbs be on the outer side and the others inside the mask
d) put the lower part of the helmet-mask under the chin and with a sharp movement of the hands up and back don it on the head without any wrinkles so that the glasses be in front of the eyes;
e) eliminate the warp and the wrinkles if there were any when donning the face part, take a full breath out , open the eyes and start breathing;
f) put on your cap, button the bag and fasten it on the body if it were not done before.
8.6. Having the protective mask on one should breathe smooth and deep. If there is any difficulty in breathing when one works (the lack of air is felt) the speed of working should be diminished and the breath normalized breathing in deeply and extensively, breathing out quickly and energetically.
8.7. The protective mask should be doffed at the command “To doff the protective maskâ€. Do it the following way
a) put up your cap with one hand;
b) take the valve box with one hand;
c) pull a little the face part down and with the movement forward and upward take it off;
e) put the face part inside out and carefully clean its inner surface with a cloth or a handkerchief and dry it;
f) put the face part together and put it into the bag;
g) put the protective mask into a ready position or a camping position according to the command or the situation.
8.8. When using the protective mask in winter, especially when the frosts are strong the rubber of the face part may stiffen, the glasses icing, the breathing in and out valves petals freezing to the saddles, the valve box and protective box neck icing.
To avoid and eliminate these phenomena one should
a) put on warming seals on the glasses frame of the face part;
b) when the frost is strong and the air is not infected the face part should be put under the upper clothes to warm the former;
c) when the protective mask is on one should warm up the valve box with hands blowing through the breathing out valve with sharp breathing out.
When the valve box and the protective box neck are iced the ice should be eliminated whenever it is formed by tapping, splitting off or melting it with a hand.
8.9. Whenever overcoming water obstacles swimming in the case of no poisonous, radioactive compounds and bacteriological (biological) means the protective box should be sealed hermetically to avoid water access into it.
To seal hermetically the hole in the protective box bottom a rubber plug is used and the cup with a protective seal is screwed onto the neck to the stop.
Sealing the protective box may be carried out (when the cup is not available) with a waterproof seal made of leather, rubber, plastic film and others), the seal being put into the valve box neck and pressed to its rubber ring by screwing in the protective box.
After overcoming the water obstacle all the protective mask components are cleaned, the protective box cup is taken off (or the seal is taken out of the valve box), the plug is taken out of the box bottom and the protective mask is collected again.
8.10. The protective mask should be kept in full readiness and measures should be taken to protect it. For this purpose one should
a) protect the protective mask against blows, pushes and strong shaking;
b) carefully treat the breathing out valves, never take them out if unnecessary;
c) if the face part is dirty it should be washed with water (preferably warm) with soap and cleaned with a cloth and dried paying a special attention to eliminating the moisture out of the valve box carefully clean the breathing out valves without taking them out of the seats and blow them through with a sharp breathing out;
d) in a cold season when taking the protective mask into a building the metal parts should be allowed to mist during 10-15 minutes, then the face part and all the metal parts of the protective mask should be cleaned with a cloth;
e) never keep the protective mask in a damp place, never allow water access into the protective box and never keep the protective mask in a damp bag;
f) never dry or keep the protective mask near a heated stove or heating pipes and batteries, by the fire;
g) when using the protective mask periodically clean the protective mask bag and never keep any strange things in the bag.
8.11. When drop-like liquid poisonous compounds get into the protective mask the visually observed ones should be immediately eliminated with a cotton wool , cleaning waste, tow wad and then the poisoned place should be cleaned with the liquid from the individual chemical protective package.
8.12. When the protective mask is poisoned with radioactive compounds it should be deactivated. The protective mask deactivation should be carried out in the area that is not poisoned. For this it is necessary
a) to clean the bag with a brush or carefully to shake it out paying attention to avoiding the radioactive dust getting into the breathing organs;
b) to clean the outer surfaces of the protective box face part several times with a damp wad.
8.13. The protective mask deactivation is carried out with disinfectant solutions.
9. Faulty protective mask maintenance
9.1. If the protective mask is spoilt in the conditions of poisoned air one should be able to use a faulty protective mask, to substitute the protective mask and its components with working ones.
9.2. If the helmet-mask is cut a little the cut place should be clutched with a hand and pressed to the face with a palm.
If there are large pores in the helmet-mask and if the grasses are broken or breathing out valves are spoilt
a) keep the breath, close the eyes and doff the face part;
b) screw the protective box out of the face part;
c) take the protective box neck into your mouth, clutch the nose and breathe without opening your eyes.
9.3. When the protective box is punctured or has holes or other whole protective box failures, one should cover the hole with a hand and plaster it with something one has at hand (clay, earth, etc.).
When it is impossible to restore the box integrity it should be substituted with a new one.
To substitute a box in the conditions of poisoned air close the eyes, keep the breath, prepare a new box, screwing out the faulty box screw on a working protective box, take a sharp breathing out and restore breathing and open your eyes.
9.4. When substituting a faulty protective mask in the conditions of poisoned air
a) prepare a working protective mask for quick donning (unbutton the bag, take out the protective mask);
b) take off the cap, put it between the knees;
c) close your eyes, keep the breath, take off the faulty protective mask;
d) don a working protective mask, take a sharp breathing out, restore breathing and open the eyes;
e) put the faulty protective mask into the bag that contained the working one.
10.1. When arriving, storing and delivering from the storehouse the protective masks should be under permanent visual control of the responsible staff who store them and are responsible for their safety.
10.2. The protective masks should be stored in dry whole boxes that are intended for them.
10.3. In the process of storing they are inspected in a random or planned way.
The planned visual inspections are subdivided into control and 100% ones.
Random visual inspections are carried out when inspecting the warehouses by the representatives or commissions of the supplying departments and according to the permission of the warehouse head when inventory making or the transfer of the authority by those responsible for storing the stock.
Control inspections are carried out as a rule in the process of storing and delivering from the storehouse to other storehouses. When completing, decompleting, repacking and reboxing and when it is necessary to dry the articles to carry out the maintenance and checking the number of the articles 100% (per piece) inspection is carried out.
10.4. The protective masks are inspected when arriving for the storage, being delivered from the warehouses if more than 6 months passed since the last inspection and in the process of storing at storehouses in the volume of 5% once a year.
The inspection of the protective masks is carried out in the following way:
b) the box is opened carefully in the way to avoid spoiling the contents and the box cover;
c) the face parts, bags, protective boxes, boxes with unmisted films are taken out of the boxes one after another after the box is opened, the components being put separately on paper or tarpaulin;
d) the availability and the quality of marking on the cases is checked and its being correspondent to that on the packed stock, the casings quality the lack of rubbish and protruding nails, the package material and the correctness of packing is checked;
e) the completeness of the protective masks sets is checked and the entries on the packing sheet are compared with the availability of the protective masks and with the marking on the box. For this purpose all the items are counted and checked one by one and the correspondence of the face parts sizes is checked.
10.5. The visual inspection of each protective mask boxes determines: the painting quality, the lack or availability of corrosion, cuts, paint corrosion of the net type paint cuts off, the availability and full screwing the cup on the neck, the availability of the plug on the box bottom.
Then the cup is screwed out of the neck and the attention is paid to the state of the threading and the lack of faults on the neck. When the plug is taken out of the hole in the bottom of the box it is checked whether the charge or the catalyst gets out. Casual getting out of some separate charge grains that does not occur after a repeated tapping cannot be the reason for considering the article faulty. The surface and the parts that could be visually inspected are inspected through the neck and the hole in the box bottom.
10.6. The visual inspection of each part determines the corrosion on the metal parts, rubber holes and tears as well as changing its color, the availability of the breathing out and breathing in valves, the rubber ring in the valve box neck, the sealing rings for unmisty films, whether the breathing valves petals are deformed, whether the juncture between the valve box and the helmet-mask is strong. For this purpose the checked part of the rubber is stretched twice, the rubber should not tear and after the stretching is stopped it should restore its former state. Such stretching is done in all the places that may be accessed.
10.7. The zinc film and passive metal parts on the face parts and the bags without corrosion spoiling is permissible. The face parts with corrosion should be repaired.
10.8. The visual inspection of the face parts is carried out at the temperature higher than 6°C. In winter the face parts are warmed before inspecting in a warm building.
10.9. The strength of the bags cloth is checked, the availability of buttons, shoulder and body tape, the lack of corrosion on the metal parts and mould on the bags is also checked.
10.10. The unmisted films are checked randomly, for this purpose two or three boxes with unmisted films are opened.
The opaqueness on the films identifies their being faulty.
10.11. The face parts with the main breathing out valves with the guarantee date expiry the valves should be substituted with new ones with checking the face parts using a static method.
10.12. The working protective masks are packed into the boxes according to the manufacturer’s packing. The opening of the box is marked in the packing sheet the date of opening the box is written, all kinds of work carried out, the position, the surname and the signature of the person checking the protective masks are included. If the boxes were sealed after the inspection and packing of the property they are sealed again with the storehouse seals.
