RU2654749C1 - Method of used for temporary water supply fire hoses disinfection treatment - Google Patents

Abstract

FIELD: fire safety.

SUBSTANCE: invention relates to the fire hoses disinfection treatment, intended for use in the buildings and structures temporary water supply systems. Installing plugs at the hoses ends. Hoses outer surface is preliminarily rinsed with the drinking-quality water to remove adherent dirt and other visible contaminants. Then hoses are soaked in disinfectant solution for their outer surface disinfection. Hoses outer surface is washed with the drinking-quality water to remove the disinfectant solution residual amounts. Hoses are connected and wound on the reel. Next, the hoses inner surface is rinsed with the drinking-quality water to remove contaminants. Hoses are tested for leaks and the damaged ones are discarded. Disinfectant solution is supplied into the hoses inner cavity with the air release and holding for the estimated contact time. Inner surface is washed with the drinking-quality water to remove the disinfectant solution residual amounts. Firefighting hoses are emptied and dried with hot air. Passed the disinfection fire hoses are wound into rolls and tightly packed piece by piece.

EFFECT: technical result: fire hoses cleaning and disinfection for use in the buildings and structures temporary drinking-quality water supply systems.

4 cl, 2 dwg

Description

Technical field

The present invention relates to the field of cleaning and disinfection of equipment and communications used to supply consumers with drinking-quality water, as well as to the field of temporary water supply systems for residential buildings and industrial facilities for the period of emergency repair or scheduled maintenance work on external water supply networks.

State of the art

Uninterrupted and round-the-clock supply of water of adequate quality to the population is one of the main tasks in the field of housing and communal services. With this in mind, special attention is traditionally paid to the development of temporary alternative water supply systems capable of providing water to residential buildings and industrial facilities with production personnel for the period of interruption of water supply through centralized water supply systems in connection with an accident or elimination of the consequences of an accident on water supply networks or their preventive maintenance.

One of the innovative ways to provide temporary water supply to objects is to supply water to a building or structure using a fire hose connected to a fire hydrant. The specified method is simple and economical and provides the ability to supply household drinking water in sufficient quantities to meet the daily needs of consumers for the period of disconnecting the building from centralized water supply systems. However, the implementation of this method raises the problem of preliminary cleaning and disinfection of fire hoses used to supply drinking water.

U.S. Patent No. 4,280,672 to Santos et al. describes a method for cleaning fire hoses, implemented using the proposed device for cleaning and rolling fire hoses, including guides mounted on the frame for supplying a fire hose, means for supplying soap solution, means for supplying washing water, movable brushes for removing dirt from the outer surface of the hose and rolling means sleeves. This method, however, provides cleaning of the sleeve only from the outside. At the same time, for the purpose of supplying drinking-quality water, fire hoses must be cleaned both externally and internally, while such cleaning must be accompanied by disinfection of the inner surface of the hose to remove possible pathogenic microorganisms.

Accordingly, in the art there is still a need for a simple and economical method for cleaning and disinfecting fire hoses intended for use in temporary water supply systems.

SUMMARY OF THE INVENTION

Thus, it is an object of the present invention to provide a simple and economical method for disinfecting fire hoses for use in temporary water supply systems.

In the present invention, this problem is solved by providing a method for the disinfection of fire hoses, comprising the following stages:

a) installing plugs on the ends of the sleeves to prevent dirt from entering the internal cavity;

b) preliminary washing of the outer surface of the sleeves with potable water to remove adhering dirt and other visible contaminants;

c) the soaking of the sleeves in a disinfectant solution to disinfect their outer surface;

g) washing the outer surface of the sleeves with potable water to remove residual disinfectant solution;

d) connection of sleeves and winding on a drum;

e) washing the inside of the fire hoses with potable water to remove contaminants;

g) checking the sleeves for leaks and rejecting damaged sleeves;

h) the supply of a disinfectant solution to the internal cavity of the sleeves with the release of air and exposure to the estimated contact time;

i) washing the inner surface of the fire hoses to remove residual disinfectant solution with drinking water;

j) emptying of disinfected and washed fire hoses;

k) drying the inner and outer surfaces of the fire hoses with hot air;

m) winding disinfected fire hoses into skating rolls;

m) hermetic single-piece packaging of the rolls of fire hoses.

Thus, the technical result of the invention is the provision of a new method for the disinfection of fire hoses, which results in the production of hermetically sealed disinfected fire hoses that meet the current sanitary and hygienic requirements, suitable for supplying water for drinking purposes according to temporary water supply schemes from the fire hydrant column to the place joining the water meter node of the building.

Brief Description of the Drawings

In FIG. 1 shows a flow chart of the disinfection of fire hoses according to the invention.

In FIG. 2 schematically shows an embodiment of a system for preparing a disinfectant solution for use in the method according to the invention and its supply to the process, where:

1 - shutoff valves with electric drive;

2 - ultrafiltration unit for additional purification of drinking water;

3 - water dispenser;

4 - reagent dispenser;

5 - reactor;

6 - disinfectant solution feed pump;

7 - rinse water pump;

8 - processed sleeves;

9 - a collection of drained water and a disinfectant solution;

10 - tank for pre-soaking sleeves;

11 - drain.

DETAILED DESCRIPTION OF THE INVENTION

According to a first aspect of the present invention, there is provided a method for disinfection of fire hoses, comprising the following steps:

a) installing plugs on the ends of the sleeves to prevent dirt from entering the internal cavity;

b) preliminary washing of the outer surface of the sleeves with potable water to remove adhering dirt and other visible contaminants;

c) the soaking of the sleeves in a disinfectant solution to disinfect their outer surface;

g) washing the outer surface of the sleeves with potable water to remove residual disinfectant solution;

d) connection of sleeves and winding on a drum;

e) washing the inside of the fire hoses with potable water to remove contaminants;

g) checking the sleeves for leaks and rejecting damaged sleeves;

h) the supply of a disinfectant solution to the internal cavity of the sleeves with the release of air and exposure to the estimated contact time;

i) washing the inner surface of the fire hoses to remove residual disinfectant solution with drinking water;

j) emptying of disinfected and washed fire hoses;

k) drying the inner and outer surfaces of the fire hoses with hot air;

m) winding disinfected fire hoses into skating rolls;

m) hermetic single-piece packaging of the rolls of fire hoses.

The proposed method, however, is also suitable for the disinfection of any woven hoses and is not limited to the possibility of processing only fire hoses.

According to one embodiment, the fire hoses to be treated are fire hoses that meet the requirements of GOST R 51049-2008. In one embodiment, the internal diameter of the fire hose is from 25 to 150 mm.

In one of the preferred embodiments, the water used in stage i) of the method for washing the inner cavity of the hoses after disinfection is subjected to ultrafiltration treatment.

As a disinfectant solution in stages c) and h) of the method, any disinfectant solutions suitable for use in the food industry or medicine can be used. As one non-limiting example, the disinfecting solution may be a 0.1% sodium dichloroisocyanurate solution, a 0.05% trichloroisocyanuric acid solution (based on active chlorine), and a solution of bleach containing 0.05-1.0% active chlorine, 3-6% solution of hydrogen peroxide, 0.01-1.0% solution of peracetic acid or 0.05-0.1% solution of the disinfectant "Ekom-50" ("Ekom-50" is a solution based on alkyldimethylbenzylammonium chloride produced by NPO Novodez). Preferably, the disinfectant used should not aggressively attack the fibers of the sleeve material.

The estimated contact time of the disinfecting solution with the surface of the sleeve in step h) depends on the specific disinfecting agent used and is selected so that it is sufficient for the disinfecting effect of the particular disinfecting solution used. In some particular embodiments, the contact time is from 10 minutes to 1.5 hours.

According to another aspect of the present invention, there is provided the use of a fire hose disinfected by the method of the invention to provide temporary water to a building or structure.

The implementation of the invention

At the ends of the sleeve, plugs are installed to prevent dirt from entering the internal cavity of the sleeve. The sleeve is washed outside with potable water, and then soaked in a disinfectant solution to disinfect its outer surface. Then the outer surface of the sleeve is washed with potable water to remove residual disinfectant solution. The sleeve is connected to other sleeves passing simultaneously processing and wound on a drum. After that, the inner surface of the fire hoses is washed with potable water to remove impurities, the hoses are checked for leaks and the disinfectant solution is fed into the inner cavity of the hoses with air released from it and soaked for a period of time necessary for the disinfecting action of the particular disinfectant used. Next, the inner surface of the sleeves is washed to remove residual disinfectant solution with drinking-quality water after its additional ultrafiltration tertiary treatment. Remove liquid from disinfected and washed fire hoses and dry them with hot air from the outside and from the inside. The fire hoses that have been processed are wound into rolls and sealed by the piece packing of the rolls of fire hoses.

After processing the inner cavity of the fire hoses, the spent disinfectant solution is reused when soaking the fire hoses in step (c). After working out the estimated number of soaking cycles, the spent disinfectant solution after dilution (if necessary) to the required concentration allowed for discharge is poured into the sewer.

Claims (17)

1. The method of disinfection of fire hoses, comprising the following stages: a) installing plugs on the ends of the sleeves to prevent dirt from entering the internal cavity; b) preliminary washing of the outer surface of the sleeves with potable water to remove adhering dirt and other visible contaminants; c) the soaking of the sleeves in a disinfectant solution to disinfect their outer surface; g) washing the outer surface of the sleeves with potable water to remove residual disinfectant solution; d) connection of sleeves and winding on a drum; e) washing the inside of the fire hoses with potable water to remove contaminants; g) checking the sleeves for leaks and rejecting damaged sleeves; h) the supply of a disinfectant solution to the internal cavity of the sleeves with the release of air and exposure to the estimated contact time; i) washing the inner surface of the fire hoses to remove residual disinfectant solution with drinking water; j) emptying of disinfected and washed fire hoses; k) drying the inner and outer surfaces of the fire hoses with hot air; m) winding disinfected fire hoses into skating rolls; m) hermetic single-piece packaging of the rolls of fire hoses. 2. The method according to p. 1, characterized in that as a disinfectant solution in stages c) and / or h) use a 0.1% solution of sodium dichloroisocyanurate, a 0.05% solution of trichloroisocyanuric acid (active chlorine) , a solution of bleach with a content of 0.05-1.0% active chlorine, a 3-6% solution of hydrogen peroxide, a 0.01-1.0% solution of peracetic acid or 0.05-0.1% - Ecom-50 disinfectant solution. 3. The method according to p. 1, characterized in that the water used in stage i) is subjected to ultrafiltration treatment. 4. The use of a fire hose that has undergone disinfection processing according to the method according to any one of paragraphs. 1-3, to provide temporary water supply to a building or structure.

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