The drainage well is an important part of the drainage. Now give preferences of plastic products. Such tanks from PVC are most often used for the audit of the system and wastewater.

But there are other spheres of application, and therefore varieties that are somewhat different from each other with their design. And only the right choice of the type of capacity will fully appreciate all the advantages of this product.

For several years, plastic products have been occupied by the leading position in the sphere of water supply and drainage, including storm and drainage systems. This is determined by a wide range of positive qualities of plastic products.

1. One of the main advantages is relatively light weight. For installation and transportation does not require the use of special equipment and organization of entry to the place of installation. The container is very simply installed by 2-3 people.
2. Plastic it is a hermetic material that has an impossible corrosion. The operational period of such products is about 50 years, while no care is required.
3. Resistance to the action of aggressive media and low temperatures.
4. High-quality PVC does not secrete toxic substances into the soil, Therefore, drainage containers from it will not harm the environmental state of the site.

In the lightweight weight of plastic products lies and her failure: Such a capacity can easily float in the flooded ground. But with this problem you can fight with the help of a concrete base, which is placed on the bottom of the pit and to which the well is mounted.

Another frequent drawback is high price. But if you recall that when installing the plastic reservoir, there is no need to hire special equipment, and the service life is several decades, it will become clear that the cost will quickly pay off.

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Varieties of drainage wells for executable functions

During the improvement of the drainage system, several types of tanks can be used, which differ from each other for the functions performed and have constructive features.

1. Watching wells Have a hard bottom, they are necessary for revision and cleaning the drainage system. They are installed every 20-30 meters on the straight pipeline and on the turns of the pipe. Therefore, they often perform the role of turning, which contributes to the presence of several inlet pipes located at different angles. At least 2 pipelines enter such a container. Unused holes are hermetically closed with special plugs.
2. Cumulative tanksdesigned to collect water and are installed at the end of the drainage system. This is completely sealed tanks, which sometimes release drainage pumps for devastation of the container. Water accumulated in the reservoir can be used for technical needs. Water collection capacities are recommended to supply with yielders, so pipes in the container are included at a height of at least 15 cm from the bottom. The inlet nozzle is supplied with a valve that prevents the reverse current of water into the system.
3. Cumulative tankscompared in some cases with an absorption well, which does not have the bottom. This is a variant of soil filtering. In the bottom of the tank, a filter is equipped.
4. In regions where, at least seasonally, excessive soil saturation with soil or atmospheric water occurs, in some places there is a pipe overflow and growth in pressure drainage. To combat such a phenomenon in particularly complex places establish expansion wellsthat quenit pressure fluid in the system. The principle of operation is that the water and a narrow pipeline under natural pressure falls into a large tank. Due to this, as well as the presence of special extinguishing energy structures inside the capacity, the flow rate and pressure in the network falls.
5. In places where pipelines pass at different depths, install drenutian wells. Such capacities are necessary where there is a big difference in the elevation. Pipes in them are located at different levels. In some cases, such tanks are used as a collector, which is connected to the pipe, evacuating the water collected from the site in the pond, ravine, etc.
6. Storm wells It is used in storm systems that differ from the drainage primarily in the depth of the passage of the grooves. In Livnevka also use a catchment well.

Finished drainage wells differ not only on the functions performed, but also features of the structure.

Classification of underground drainage tanks

Under this feature, ready-made PVC tanks are divided into 2 categories.

Prefabricated wells Consist of several elements that are connected to each other before assembling:

• main tray with nozzles;
• mines that can be a corrugated or smooth pipe;
• two sealing rings for body combination (mine) well with a neck or tray;
• neck;
• plastic lid;
• extension, the length of which can vary depending on the depth of installation.

Such tanks are more versatile, as it is possible to adjust the length of the mines depending on the blowout, but more expensive. It is important to take into account that with increasing length, the stability of the body capacity to compression decreases.

Monolithic containers More durable and cheap, but have a standard height, so designed for mounting at a certain depth. True, it allows you to repletely install the neck. Drops and expanding containers are available only in this form.

Monolithic and prefabricated products are manufactured both in Russia and abroad.

Firms producing plastic wells for drainage and approximate prices

Companies providing for the Russian market plastic tanks for a drainage system are quite a lot. And this figure is constantly growing. However, the market lead 2 firms that are most popular with consumers.

Polyplastic

This is one of the leaders among Russian manufacturers of plastic products. The company produces the entire spectrum of wells used in drainage systems. The assortment has welded tanks. Their tray options can be used to install on turns, intersection of pipelines and to revise the system. Flelons can be used as cumulative tanks.

The company produces distribution tanks, stand-raid wells, as well as prefabricated diameters. The cost of the welded well shaft is about 1,700 rubles per meter for a tank with a diameter of 40 cm, the tray of this size costs from 2300 rubles, and the telescopic neck from 6000 rubles.

Feedback: Acquired the products of the Polyplastic for the revision of the drainage system. There are no problems in the collection, during operation too. Satisfied. The only minus - in the process of choice, could not find the price, which is important for monitoring products.

This European company, which is the leader in the production of plastic products for sewage, including for drainage systems, produces team wells with a diameter of 315, 425, as well as more volume models Wavin Tegra 600 and 1000. All of them consist of corrugated mines, telescopic neck , hatch and tray with nozzles.

The price for a mine with a diameter of 425 mm ranges from 7,000 to 21,000 rubles depending on the length. The tray of this type can do at least 5,000 rubles.

Feedback: The well of the company Vavin has been served for more than 5 years. The quality is very satisfied, the temperature differences reservoir stood without problems. True, prices bite.

Device and installation features

Install a plastic drainage well on a plot without specialists. For installation, you will need 1-2 assistants mainly to vacation tanks on the bottom. But before that it is necessary to produce preparatory work.

With a monolithic product, everything is easier, it is almost ready for installation. Collapsible finished products must be collected according to the instructions. And if you decide to make a reservoir from a pipe of a large diameter, then first it is necessary to trim on the required length.

In finished products, the holes for pipes are more often already there, and in self-made - they are pre-cut in accordance with the DREN diameter. Rubber seals and plastic couplings are inserted into the holes. All seals are lubricated with sealant to prevent leaks.

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After that, it is embarrassed to the roar and the preparation of the pit, taking into account several parameters:

1. Depth It should be such that the places of pipe entry take place below the soil freezing point, and the bottom of the capacity is half a half of the groundwater level.
2. It is also necessary to consider that on the bottom of the pit it will be covered pillow of rubble 15-20 cm high.
3. Width Kotlovana - by 40-60 cm larger than the diameter of the container.
4. Luke After 10-15 cm should be towering over the ground surface.

After the pit is dug, it is aligned, and then fall asleep and align the pillow from rubble.

If the area is characterized by the seasonal rise of groundwater, it is additionally necessary to pour cement base to the bottom.

After the cement is frozen, it is possible to install:

1. The reservoir is released on the bottom.
2. Check with the help of a level, is exactly the container.
3. Connect pipes for a drainage well to nozzles. Be sure to handle all the connections with sealant.
4. Produce backing up the reservoir with a sandy-gravel mixture. Do this layer, each layer thoroughly tram.
5. Install plastic lid (hatch).

On this installation is over. If necessary, a drainage pump is released into the collector.

Wavin Tegra 1000 Well Installation Video:

In marking drainage tanks To order its type (EP or EPP), the volume, inner diameter and material of execution are indicated.

An example of the designation when ordering:

EP (EPP) 25-2000-1-1 (2) (3) -K, where "EP" underground drainage capacity without heating ("EPP" - the underground drainage tank with a heating system), "25" - nominal volume in m³ , "2000" - the inner diameter of the container in mm; "1" - constructive execution; "1", "2" or "3" - the material of manufacture ("1" - steel ST 3SP4 GOST 380-90; "2" - steel 16GS GOST 5520-79; "3" - steel 09G2S GOST 5520-79); "K" - the presence of a concrete well.

Options for the design of the tanks of the underground EP / EPP:

• Capacities underground drainage horizontal type EP (without heating);
• Capacities underground drainage horizontal types of EPP (with a heating system in the form of a metal coil or heating cable);
• Climatic execution u0 and t4 (up to - 20 ° C); U0 (up to - 40 ° C); CL1 (up to - 60 ° C).
• Nominal volume from 5m³ to 63m³
• The capacitance of EP / EPP can be equipped with thermal insulation.

Purpose of the tanks of drainage EP / EPP:

The capacities underground EP and the EPP are used to store fusion from the technological pipelines of oil products, both bright and dark. Underground horizontal drainage capacities are widely used in Russian enterprises, since almost any production faces the need to drain the residues of the liquid products used in the technological cycle. In underground storage tanks, EP / EPP can store liquid products containing no more than 1.8% hydrogen sulfide in the gas phase.

Capacitance EP, as well as tanks horizontal RGS, apply to for collecting liquids in small volumes (as a rule, up to 63 cubic meters). To storing large volumes of liquid raw materials usedvertical tanks (RVS). For storing bulk leakssilos and bunekers are used.

Production of underground drainage tanks EP / EPP:

Production of containers should be carried out in accordance with. At the enterprise, the manufacturer should apply modern technologies for the preparation of metal rolling, welding, anti-corrosion processing and loading for transportation.

General characteristics of the containers of underground drainage EP / EPP:

• used for storage of products from 2 to 4 grade hazard (according to GOST 12.1.007-76);
• designed for the temperature of the stored product: from -15 ° C to + 80 ° C;
• designed for pressure inside the tank to 0.07 mp;
• Designed for the kinematic viscosity of the product drained in EP / EPP to 30 10 -6 m² / s;
• The density of the product drained in the EP / EPP of the product to 1000 kg / m³

"R Yarev Waraz Truitel" recommends ordering capacity EP. / EPP with internal and external anti-corrosion coating to increase their service life. The characteristics of the anti-corrosion coating are selected on the basis of the characteristics of the product being drained into the capacity and the operating mode of the container.

Guarantees of quality tanks:

Underground drainage tanks are manufactured in accordance with; TU.1415.004-466214309-2008. The quality of our EP containers is confirmed by permission to use No. RRS.00-047039 and a certificate of compliance No.SRS.ru.Av17.P1286.

Warranty period of operation tanks of drainage EP / EPP Production of ZMK "R Jerus Wara Truitel": 18 months from the date of equipment commissioning, but not more than 24 months after shipment to the customer from the factory.

On the PSP to collect leaks of oil and drainage from filters-dirt leads, assemblies of safety devices, emergency emptying of coils of furnaces, taken into account and unrecorded oil with measuring lines Sycn Underground horizontal containers are used:

• capacity horizontal EP-1 V \u003d 63 m s (1pc.), installed underground for drainage filters filters, furnaces, pumping station, unrecorded oil after SYCN;
• the containers are horizontal for the coolant EP-6, EP-7 V \u003d 40M h (2pcs), installed underground for drainage of coolant furnaces;
• capacity horizontal EP-2 V \u003d 12.5 m s (1pc.) For drainage of scientist oil after SYCN, installed underground;
• the tank is a horizontal type of RGSP V \u003d 10 m s, installed underground to collect the oil strait from the AC field;
• for commodity reservoirs, oil drain from tank trucks on the AC capacitance site horizontal EP-4, EP-5, V \u003d 63 m s, installed underground.

In the event of an accident, the collection of oil from the obmissal of one of the product reservoirs of P-1,2,3 is carried out by mobile means in the drainage capacity of EP-4, EP-5 followed by pumping into the adjacent RVS.

Pumping oil from drainage containers is produced into the tank of the Park using a semi-duty pump unit with a nominal supply of 50 m 3 / h and pressure of 80 m.

The pumping of oil from the drainage capacity of the accountable oil is carried out in the pressure oil pipeline using a semi-submerge pump unit with a nominal supply of 12.5 m 3 / h and pressure of 200 m.

Pump units and fittings have climatic execution of CL and placement category 1 according to GOST 15150-69. Pump units adopted in accordance with OTT-23.080.00-KNTN-138-09 "Electron-and-wing aggregates for pumping oil leakage from the collecting tanks for the PSP. General Technical Requirements "with changes in the part of the climatic performance and Q-H characteristics for the oil pumping unit from the CACN capacity.

Capacities for collecting oil leaks and drainage belong to the explosive area of \u200b\u200bthe 1st grade according to GOST 30852.9-2002 and in the explosion and fire hazard to the category of outdoor installation of the Academy of SP 12.13130.2009. Category (GOST 30852.11-2002) and a group (GOST 30852.5-2002) of an explosive mixture of vapor LVZ with air - IIA-T3.

Pipelines and fittings of drainage systems and leakage collection systems located in ventilated shelters and outside shelters, including underground laying areas to connecting points to the oil and drainage leakage tanks, are provided in thermal insulation with electrical heating.

To prevent the flame penetration into the tank in the ignition of extending explosive mixtures of gases and steams with air, the container is equipped with a fireproof.

In containers, automation instruments are installed, providing its protection against overflow of oil. On the container housing, two plates are provided from different sides to attach to a grounding device. In places of attachment to the grounding device, identifying signs are provided in accordance with Pue (Edition 7), paragraph 1.7.118.

The capacitance is equipped with an intrinsically safe staircase for accessing inside.

To supply a pair, a special fitting is provided when steering the container. Racket is provided for the period of repair work.

The drainage tanks are equipped with a neck for the installation of a pumping semi-duty vertical unit with an electric motor in an explosion-proof version. The height of the tank neck (1300 mm) ensures the installation on it a pump unit without transient support pipes.

Technical characteristics of the pump unit are presented below (Table 10).

Specifications of the semi-duty pump unit for EP-1 tanks 1,3,4,5

Specifications of the pump unit for the Capacity EP-2

On the pumping pipe of the pump between the pump and the valve, the installation of the shutter is inverse to prevent the reverse stroke of the pumped oil, according to GOST 32569-2013 "Technological steel pipelines. Requirements for the device and operation in explosion hazardous and chemically hazardous industries. "Clause 4.11.

To eliminate oil frozen in the winter period, emptying of the above-ground sections of the pump pressure piping installed on the container are provided.

On the pump discharge pipeline, mortgage designs of selected devices (kipia devices) are provided for pressure measurement. For safety reasons, mortgage structures are applied with closed drainage systems in accordance with the SPC 14-2-2009.

Anticorrosive protection and thermal insulation of tanks

Capacities are designed with anti-corrosion insulation of the outer surface in the factory.

As a thermal insulation material for EP-1 tanks, a polyurethane insulation of 100mm thick, applied in factory conditions, a category of resistance to Fire G4, for the drainage containers of the heat carrier EP-6.7, thermal insulation is not provided.

Thermal insulation and electric heating are included in the package of the manufacturer.

As a factory anti-corrosion coating (outer), an Emale of PF-115 GOST 6465-76 (2 layers) is provided on the primer of FL-03.J.J. GOST 9109-81 (1 layer) or analogs.

As a coating layer, the factory anti-corrosion coating of the reinforced type according to GOST 9.602-2005 is a thickness of at least 4.6 mm:

• primer NK-50 on TU 5775-001-01297859-95 or on the other manufacturers - 1 layer;
• insulating tape "Pollen" 40-Li-63 450x170 for TU 2245-003-01297859-99 or in the other manufacturers - 2 layers, a thickness of at least 2.0 mm each;
• outdoor wrapper "Pollen-about" 40-O-63 on TU 2245-004-01297859-99 or in the other manufacturers - 1 layer, 0.6 mm thick.

To protect against the internal corrosion of the capacitive equipment, the coating of the following construction is recommended: epoxy-phenolic coating - 3 layers with a thickness of 120 μm. The total thickness of the protective coating is at least 360 microns.

An example of a conditional designation when ordering: EP 25-2400-1 (2) (3)Where: EP. - Capacity underground without heater, 25 - nominal volume, m3, 2400 - internal container diameter, mm, 1(2)(3) - Material design: Steel STZPS4 GOST 380-90; Steel 16GS GOST 5520-79; Steel 09G2S GOST 5520-79.

Purpose

Capacity underground horizontal drainage, type EP. (without heater) is intended to merge oil, oil, remains of dark and light oil products, condensate, including mixtures with water from pipelines (technological networks) and devices in any industries.

In addition, such an underground capacity can be used to store chemicals (including aggressive) products. Underground drainage capacity of the EPP is an all-welded horizontal apparatus having conical bottoms and 2 hatches; The purpose of one of the hatches is the maintenance of the steel capacity, the purpose of the other - removing the medium from the tank.

The product is removed using a semi-submerged electric pump unit. Pump units can be with a double seal, in an explosion protection or corrosion version - it all depends on the nature of the medium. To protect against low temperatures and in order to prevent the corrosion exposure to the atmosphere on the pump electric motor, a metallic or concrete well is provided in the configuration of the tank of the EP.

The design of the steel container provides nozzles and fittings for the level gauge, pressure gauge, thermometer. This is done to observe the technological process. Taking into account the fact that the values \u200b\u200bof the cutter hatches are 1 m and more, hatches and nozzles are cut at a distance of 0.4 m from the shell in order to more convenient transportation to the place of installation.

Underground drainage containers having a nominal volume from 5 to 63 m³ and operating under pressure of not more than 0.07 MPa (0.7 kgf / cm²) and media temperatures from minus 15 ºС to 80 ºС, intended to in order to enterprises in petrochemical, oil refining, petroleum, gas and chemical industries to drain from pipelines (technological networks) and dark and light oil products, oil, oil, condensate (including water), which contain no more than 0.18% H² in the gas medium . The density of the fluid flowing should be no more than 1000 kg / m3 and have a kinematic viscosity to 30 · 10-6 m² / s. The hazard class of workers is 2, 3, 4 according to GOST 12.1.007-76.

Steel containers, depending on the properties of the pumped medium, are completed:

• electric pump unit type HB 50/50 (containers that are not subject to heat treatment);
• electron Aggregate Akhpo-E 45/54-K-2g (Capacities that are subject to heat treatment).

DB - the inner diameter of the reservoir, L is the length of the tank, L1 - the distance between the supports, L2 is the length of the cylindrical part of the tank, S, S1 - the thickness of the tank housing, B - the width of the tank, H is the height of the tank, H1 - the height of the tank during transportation, H2 - Failure level.

The main parameters and sizes of the capacitance of EP:

Table of fittings:

Mortgage parts of the concrete well, shut-off valves, instruments of kipics are not included.

Specifications

§ Operation on the drainage of tanks, containers, in agreement with the operator of the sewage treatment plant, the workshop №11. When draining tanks, pay special attention to the condition of the drainaged liquid (water, spent pitch, soap).

§ The position of the siphon crane on tanks must be marked with letters IN (water), P(product).

§ Before the start of drainage, make sure that the siphon crane is correct.

§ Set the crane (valve) to the "Water" position, designated on tanks.

§ With the help of a Lacmus paper, measure the pH.

§ If the drainage fluid during sampling contains water or soap, then drainage repeat more.

§ An employee, making drainage of reservoirs, containers must be near and monitor the drainaged petroleum products.

§ When the tap can be covered in the drainaged liquid, the faucet should be covered before the appearance of water only or close completely and read the tank, the container prepared for the pump.

§ After the end of draining, the siphon follows during the cold season, turn to the position of the product.

§ In the watch journal after stopping the drainage of tanks, containers must be reflected: coordination of its actions, pH in a drainaged fluid, the beginning and end of the drainage.

§ Each watch, during the bypass of the reservoir parks, it is necessary to make sure that all siphon cranes are in a closed position and the non-controlled and unauthorized dumping of petroleum products, which is possible as a result of the actions of persons who are not related to the maintenance of this object. If such facts are found to inform the workshop management, the plant's dispatcher, to act according to Place.

3.2. Safety requirements for drainage

Works on the drainage of the tank belong to the gas-hazardous work of the 2nd group. These works are carried out without registration of outfit, but with the mandatory registration of such works before their start in the watch magazine.

§ Drainage of the supplied water to produce no earlier than 2 hours after the cessation of the movement of the petroleum product in the tank, containers.

§ The composition of the brigade of performers at least 2 people.

§ drainage to produce in the filter gas mask and in the presence of a double.

§ Producing drainage and watching should stand back to the wind.

§ When working with drainage waters, it is necessary to use individual means of protection: safety glasses, rubber gloves.

§ In contact, drainage water can cause eye irritation, respiratory organs and skin irritation. Do not allow them to get into the eyes, on the skin. Do not allow them to get them in the gastrointestinal tract.

§ During the selection of samples of drainage water, when carrying out minor repair work (suspension liners, sealing of flange compounds, preparation for the repair of equipment, etc.) Possible brief contact of working with petroleum products that cause harmful effects. Therefore, all workers and ITR are allowed to independently work after passing the safety instruction (introductory, primary, special), fire and gas security, as well as internships in the workplace and testing the knowledge gained by the Commission.

3.3. It is strictly prohibited

§ Dumping drainaged liquid past sewer veil or cutting communications.

§ Drain into the sewer oil product.

§ Leave a siphone crane in the cold time in the Water position to avoid freezing.

§ Leave a siphone crane in an open state without supervision.

§ Apply for opening and closing not intended for this purpose tool in order to avoid crane breakage with a valve.

§ Mode to rotate the siphon crane in the open position.

§ violate the rules established by the instructions for labor protection "according to the rules of fire safety in the workshop number 3" section 3.5.2. IOT-3-008.

§ To allow for the work of persons not familiar with this instruction.

3.4. A RESPONSIBILITY

In violation of the instruction, the culprit is administrative and material responsibility

4. Registration of changes of the local regulatory document

Table 1

List of changes in the instruction