RU155709U1 - INSTALLATION FOR CHECKING FILTER-ABSORBING SYSTEMS ON THE AEROSOL OF ANTIROTING SUBSTANCES - Google Patents

Abstract

Installation for checking filtering-absorbing systems by aerosol of irritating substances, containing a working chamber with filtering-absorbing systems placed in it, mounted on racks and secured with straps, extensions, stakes, smoke cartridges installed in the working chamber, characterized in that the filtering -absorbing systems by means of an air duct with a filter are connected through a rotameter to a vacuum pump, and the installation is equipped with indicator tubes installed in the openings of the air ducts and connected to an asp to the speaker

Description

The proposed utility model relates to the field of research of quality indicators of materials and products.

At present, the state of affairs in the field of ensuring chemical and biological safety allows us to conclude that the protection of the population and its environment in the Russian Federation from hazardous biological and chemical factors has not been brought to a level at which there are no unacceptable risks of harm to human life and health, environment and technosphere [1, 2].

It should be noted that personal respiratory protective equipment (RPE) is one of the main components of the safety of a person in an atmosphere containing dangerous impurities.

When conducting research on RPD, it may be necessary to determine the time of the protective action of filtering-absorbing systems (FPS) by the aerosol of irritating substances.

At present, to check the tightness and correctness of fitting of RPE samples as a whole for the aerosol of irritating substances, there is a KPP-1 gas mask check kit (code “Drive”) [3]. This kit consists of the following basic elements:

- a square camera with a working volume of 2.4 m ³ ;

- smoke cartridge PD-1 (360 pcs.);

- a bag for packing the camera;

- racks, extensions, stakes;

- packing box, documentation.

The appearance of the kit in working condition is shown in FIG. one.

The principle of operation of KPP-1 is based on the creation in the working chamber of an aerosol of the irritating substance CS and the organoleptic determination of its presence in the under-mask space of the SIZOD when inside the working chamber.

It should be noted that this kit does not allow to evaluate separately the protective properties of FPS by aerosol of irritating substances. In addition, when examining a faulty sample, the tester will be affected by the irritating substance CS.

The task to which the claimed utility model is directed is to determine the time of the protective action of filtering and absorbing systems by aerosol of the irritating substance CS while observing safety precautions and eliminating the defeat of the tester.

This problem is solved due to the fact that the claimed installation for checking filtering and absorbing systems for aerosol of irritating substances containing a working chamber, smoke cartridge PD-1, racks, extensions, stakes equipped with an aspirator, rotameter, air duct with a shut-off filter and indicator tube IT-49 .

The technical result provided by the given set of features is to determine the tightness and time of the protective action of filtering and absorbing systems by aerosol of the irritating substance CS, while observing safety precautions and eliminating the defeat of the tester.

The essence of the utility model is illustrated by drawings, which depict:

- in FIG. 2 - appearance of a designed and constructed installation;

- in FIG. 3 is a schematic diagram of a designed and constructed installation.

FPS studies at this facility are performed as follows:

- the installation is mounted at a distance of at least 100 m from the living quarters. The working chamber (1) is installed on the racks and its fixing is carried out using, straps, stretch marks and stakes;

- smoke cartridges PD-1 (2) and percussion mechanisms are installed;

- the investigated FPS (4) are connected via an air duct (8) with a shut-off filter (7) through a rotameter (9) to a vacuum pump and placed inside the working chamber through a sleeve (3);

- indicator tubes (6) are installed in pre-made holes in the air ducts behind the investigated FPS, which, by means of rubber tubes, are connected to the aspirator (5);

- the ammunition is launched PD-1. Smoke formation is determined by ear by a characteristic hissing, sometimes accompanied by minor popping, after the end of smoke formation (30–40 s from the start of the operation of the cartridges), a vacuum with the required flow rate and an aspirator are turned on to take air samples passing through the PPS and evaluate the presence and concentration of CS aerosol in it using indicator tubes;

- the time from the start of the experiment to the appearance of a breakthrough CS aerosol concentration behind the sample is detected;

- every 10 min, one PD-1 cartridge is launched to maintain the CS aerosol concentration inside the working chamber.

After the end of the research, the working chamber must be minimized, collected spent cartridges and prepared for destruction.

To minimize the working chamber, it is necessary to carry out the following activities:

- depressurize and roll up the sleeves;

- ventilate the chamber for 30 minutes;

- untie the ribbons fastening the camera to the uprights;

- remove the rope extensions and put the working chamber on the ground;

- shake and collapse the working chamber;

- put it in a packing bag, carefully tie it;

- put the working chamber in the packing box;

- remove stakes from the soil;

- disassemble the racks and put them together with extensions in a packing box. Dry the working chamber before laying in a box, and metal

parts to clear of dirt.

The substance CS, used to test filtering and absorbing systems, has an irritating effect on the mucous membranes of the eyes, respiratory organs and exposed, especially moist, skin areas. Irritation passes without consequences. In case of contact with CS, rinse thoroughly with water.

At the next stage, it seemed advisable to test the developed and constructed installation. Filter-absorbing boxes (FPKs) for personal protective equipment for respiratory organs in the initial state and after deliberate damage to the aerosol filter (PAF) were investigated.

An analysis of the obtained experimental data shows that the developed setup allows us to determine the suitability of the FPS.

At the next stage, the time of the protective effect of the FPK on the aerosol of the irritating substance was determined. The research results are presented in table 2.

Analysis of the obtained data showed that the developed setup allows us to determine the time of the protective action of the PPS by the aerosol of an irritating substance.

Literature

1. The concept of the federal target program "National system of chemical and biological safety of the Russian Federation (2009-2013)." It is approved by the order of the Government of the Russian Federation of January 28, 2008 No. 74-r.

2. Nikitaev S.P., Shatalov E.V., Soloshin S.V., Sevostyanov A.A. Conceptual foundations of the directions for improving personal respiratory protection [Text]. Abstracts of the VIII International Conference "The latest trends in the design and use of ballistic materials and protective equipment." Khotkovo: Central Research Institute of Special Engineering. 2005, S. 85-88.

3. Guidelines for the operation of personal and collective protective equipment, the use of the protective properties of terrain and objects [Text]. - Volsk-18: military unit 61469, 2001 .-- 297 p.

Claims (1)

Installation for checking filtering-absorbing systems by aerosol of irritating substances, containing a working chamber with filtering-absorbing systems placed in it, mounted on racks and secured with straps, extensions, stakes, smoke cartridges installed in the working chamber, characterized in that the filtering -absorbing systems by means of an air duct with a filter are connected through a rotameter to a vacuum pump, and the installation is equipped with indicator tubes installed in the openings of the air ducts and connected to an asp to the speaker

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