Respirators R-2: Technical Characteristics And Shelf Life, Device And Principle Of Operation. What Is It For?

2024 Author: Beatrice Philips | [email protected]. Last modified: 2023-12-16 05:33

The pantry of technical progress is replenished every year with a variety of - useful and not so - inventions. But some of them, unfortunately, have another side of the coin - they have a negative impact on the environment, worsening the already tense ecological situation on our planet. Modern people often have to work and live in conditions of protection of their body from the effects of harmful factors. For example, the lungs are the first to suffer from street dust, exhaust gases and various kinds of chemicals, and in order to reliably protect them, it is necessary to use respiratory devices. For this, respirators of the P-2 model are quite suitable.

Description

Respirator R-2 is a means of individual protection of the human respiratory system. It is designed for use in dusty environments . Half masks of this brand are considered highly effective, have a wide purpose, as they protect not only the respiratory system, but also the body as a whole from various kinds of poisoning.

This respirator protects against the following types of dust:

• mineral;
• radioactive;
• animal;
• metal;
• vegetable.

In addition, the P-2 respirator can also be purchased to protect against pigment dust, various pesticides and powdered fertilizers that do not emit toxic fumes. However, this type of protective device must not be used in humid environments or in places where there is a risk of contact with solvents. The manufacturer produces respirators P-2 in several sizes.

The main advantages of this product include:

• high efficiency and dust resistance;
• wide application and versatility;
• possibility of application without the need for prior training;
• ideal for children and the elderly with poor health;
• long shelf life while maintaining the tightness of the package;
• a warranty period of up to 7 years;
• increased comfort during use: neither heat nor moisture is retained under the mask, and resistance decreases on exhalation.

Specifications

Recently, respirators P-2 are in great demand, since they not only provide the respiratory organs with effective protection against the negative effects of various factors, but also have good technical characteristics. So, with a volumetric air flow rate of 500 cubic meters. cm / s, the resistance to air flow in such devices is no more than 88.2 Pa . At the same time, the dust permeability coefficient is up to 0.05%, since the device contains a high-quality filter valve in its configuration.

Such respirators can be used at temperatures from -40 to +50 C. The mass of the protective device is 60 g. Respirators R-2, subject to all storage rules, have a long shelf life:

• with a nonwoven sheath - 7 years;
• with polyurethane foam sheath - 5 years.

Device and principle of operation

This model of respirator has a rather simple device - it consists of three layers of different materials. The first layer is polyurethane, which is characterized by a protective color, has the appearance of a film and does not allow dust contained in the air to pass through. The device also includes 2 valves, between which there is a second protective layer made of polymer fibers . The main task of this layer is additional filtration of the air inhaled by a person. The third layer is made of a thin air-permeable film, in which the inhalation valves are mounted separately.

The front of the protective device has an outlet valve . To make it convenient to use the respirator, manufacturers additionally equip it with a nose clip and soft elastic straps, thanks to which the device is securely fixed on the head and does not slip on the eyes or chin.

The principle of operation of the respirator R-2 is based on the protection of the respiratory system from the harmful effects of the environment with a half mask.

The inhaled air enters through the filters, being cleaned at the same time, and the exhaust air is discharged through a separate valve. Using such a device, a person almost completely protects his body from the negative effects of dust.

Dimensions (edit)

The P-2 device can be purchased in three sizes: first, second, third. The first corresponds to the distance from the notch of the bridge of the nose to the lower point of the chin of 109 cm, the second is intended for distances from 110 to 119 cm, and the third is more than 120 cm.

When purchasing this protective device, special attention should be paid to the correct selection of the size , since the respirator should fit snugly to the skin of the face, but at the same time not create any inconvenience. Some manufacturers produce these models in one universal size.

In the design of universal respirators, special adjusting elements are provided, which provide a firm fixation on any size of the face of a person.

Features of operation

The P-2 respirator is put on the face in such a way that the nose and chin are placed inside the half mask. In this case, one of its braids is placed on the occipital, and the other on the parietal part of the head. It should be noted that these two fastening straps do not have the ability to stretch . Therefore, for convenient operation, it is recommended to adjust the elastic straps using special buckles, but this must be done with the respirator removed.

When putting on a protective device, you must make sure that it does not squeeze too much in the nose and does not press strongly against the face.

It is very easy to make sure of the tightness of the worn protective equipment, you just need to tightly cover the opening of the safety valve with the palm of your hand, and then make one light exhale . If air does not come out along the line of contact of the device, but only slightly inflates it, then the device is put on tightly. The release of air from under the wings of the nose indicates that the respirator is not pressed tightly. If, after several attempts, it is not possible to put it on tightly, then it is best to replace it with a different size.

To remove excess moisture from under the mask, you need to bend your head down. In case of abundant moisture release, it is recommended to remove the device for a few minutes, but this is allowed only if a respirator is used as protection against radioactive dust.

After removing the respirator, remove moisture from the inside and wipe it with a napkin, then the device can be put on again and used as intended further.

To provide the respirator R-2 with a long service life, it must be protected from mechanical damage .otherwise it will be unusable due to the formation of through holes. You can not use this tool even if there is mechanical damage to the straps, nose clip, any tears of the plastic film and the absence of inhalation valves.

After each use, the respirator should be wiped dry with a dry, clean cloth (cannot be turned out). It is strictly forbidden to clean the half mask with rags soaked in organic substances. This can destroy the material of the protective device and reduce its strength.

Since the material of the respirator melts at a temperature of + 80C, it cannot be dried and stored near fires and heating devices . In addition, the half mask should be protected from the negative effects of precipitation, since when it gets wet, a significant loss of protective properties is observed and resistance to inhalation increases.

If it so happens that the respirator gets wet, there is no need to rush to throw it away - after drying, the device can be used as a respiratory protection against radioactive dust.

The main advantage of P-2 respirators is the fact that you can stay in them continuously for 12 hours . And this will not in any way affect the functional state and performance of a person.

It is recommended to store such half masks in special bags or bags designed for gas masks. Products that have been used in areas with increased radiation and have an infection rate of more than 50 mR / h must be replaced with new ones.

If all conditions of storage and operation are observed correctly, then respirators R-2 can be used several times (up to 15 shifts).