Rehabilitation of lateral house drains and circular non-man-accessible sewers.

REHABILITATION USING WATER CURED CIPP LINING

Trade name – water CIPP sleeve
Materials – felt + polyester resin
Curing – hot water
Suppliers – Chevalier, Mazur, Pris, Insituform
Diameter range – DN 200 – DN 2100
Scope of application – SBK

TECHNICAL DESCRIPTION OF REHABILITATION WITH A PIPE LINER CURED IN PLACE (CIPP) WITH WATER

WITH STEAM In accordance with PN-EN 752-5; 13689; 13566-1; 13566-4.

1. MATERIAL

The components of the pipe lining are chosen in accordance with PN-EN 13566-4, Table 1. In the case of hot water cured CIPP products one can use unsaturated polyester (UP), vinyl ester (VE) or epoxy (EP) resins. Usually the carrier is made of polymer unwoven fabric (PA, PAN, PET, PP). Membranes can be used depending on the requirements of individual producers of pipe liners.

2. EQUIPMENT FOR INSTALLING PIPE LINERS

  • sewer cleaning machine (jetting truck) remote controlled sewer inspection camera sewer calibration equipment remote controlled equipment for internal sewer milling heating device (water boiler unit) inversion equipment (water tower or inversion drum) standpipe by-pass equipment (pumps, hoses) equipment to put the sewer back into operation test equipment

3. PREPARATION FOR THE INSTALLATION

Technical evaluation of the sewer

Before the rehabilitation the pipe is jet-cleaned with a sewer cleaning machine placed on a truck. After that the pipeline is inspected with a remote-controlled camera. The analysis of the video from the sewer inspection forms the basis to create a detailed computer report on the technical condition of the pipe. On the basis of report data the sewer is classified depending on its technical condition.

Selecting the rehabilitation method

Depending on how the sewer is damaged or destroyed and its classification to a specific group, depending on its technical condition an appropriate rehabilitation method is selected. After the evaluation of the sewer’s technical condition one should analyze geodetic data, groundwater level with respect to the base of the sewer, road traffic exposure, and other parameters that have influence on the selection of parameters of the used liner that is to be applied and on the basis of the above select an appropriate CIPP pipe during the design phase. On the basis of the known Young (E) modulus, specific for the proposed carrier, the designer selects the thickness of the CIPP liner.

Saturation of the pipe liner

Using negative pressure the pipe liner is saturated with resin in controlled conditions.

Storage and transportation to the construction site

The resin-saturated pipe liner is stored in a dark place protected against UV rays. From the place of storage the pipe liner is delivered to the construction site in containers or boxes that ensure optimal transportation conditions.

4. INSTALLATION

Once the damaged section of sewer is taken out of service a protective sleeve (preliner) is pulled into it. Having protected the surface of the host sewer a standpipe or inversion drum is placed above the place where the pipe liner will be inserted. The pipe liner is inserted into the sewer using the water inversion method. Once the above has been completed the heating unit is turned on and heats water in closed circulation inside the pipe liner up to curing temperature. After the installation, a milling cutter is used to cut off the ends in the upstream and downstream inspection chambers, as well as “blank” openings for connections in the cured pipe liner. During the installation process several parameters are recorded, namely: pressure of the liquid pumped into the pipe liner during all the stages of the process and curing, as well as continuous temperature readings from all control points during the curing process.

5. INSPECTION

CCTV inspection

Once the installation is finished and lateral house drains are opened a CCTV acceptance inspection is made and recorded on a VHS cassette or CD. At the same time an inspection report is prepared.

Tests

In accordance with PN-EN ISO 11296-1, 11296-4 and PN-EN 1610.

6. DEFECT REMEDIATION

Any defects are made good with the help of a camera-controlled robot and/or by patching with short sections of the pipe liner.

REHABILITATION USING STEAM CURED CIPP LINING

Trade name – steam CIPP sleeve
Materials – glass fiber mat + polyester resin
Curing – steam
Suppliers – Impreg, Saertex, Mazur
Diameter range – DN200–1200
Scope of application – SBK

TECHNICAL DESCRIPTION OF REHABILITATION WITH A PIPE LINER CURED IN PLACE (CIPP)

WITH STEAM In accordance with PN-EN 752-5; 13689; 13566-1; 13566-4.

1. MATERIAL

The components of the pipe lining are chosen in accordance with PN-EN 13566-4, Table 1. In the case of steam cured CIPP products one can use unsaturated polyester (UP) or vinyl ester (VE) resins. As the resin carrier one can use a polymer unwoven fabric (PA, PAN, PET, PP) or, more often, ECR glass fiber. A combination of such fabrics can also be used. Membranes can be used depending on the requirements of individual producers of pipe liners.

2. EQUIPMENT FOR INSTALLING PIPE LINERS

  • sewer cleaning machine (jetting truck) remote controlled sewer inspection camera sewer calibration equipment remote controlled equipment for internal sewer milling steam generator hoisting machine (winch) by-pass equipment (pumps, hoses) test equipment

3. PREPARATION FOR THE INSTALLATION

Technical evaluation of the sewer

Before the rehabilitation the pipe is jet-cleaned with a sewer cleaning machine placed on a truck. After that the pipeline is inspected with a remote-controlled camera. The analysis of the video from the sewer inspection forms the basis to create a detailed computer report on the technical condition of the pipe. On the basis of report data the sewer is classified depending on its technical condition.

Selecting the rehabilitation method

Depending on how the sewer is damaged or destroyed and its classification to a specific group, depending on its technical condition an appropriate rehabilitation method is selected. After the evaluation of the sewer’s technical condition one should analyze geodetic data, groundwater level with respect to the base of the sewer, road traffic exposure, and other parameters that have influence on the selection of parameters of the used liner that is to be used, and on the basis of the above select an appropriate CIPP pipe during the design phase. On the basis of the known Young (E) modulus, specific for the proposed carrier, the designer selects the thickness of the CIPP liner.

Saturation of the pipe liner

Using negative pressure the pipe liner is saturated with resin in controlled conditions.

Storage and transportation to the construction site

The resin-saturated pipe liner is cold stored to ensure optimal temperature conditions. From the place of storage the pipe liner is delivered to the construction site in containers or boxes that ensure optimal temperature conditions for the specific resin.

4. INSTALLATION

Once the damaged section of sewer is taken out of service a slip sheet is pulled into it. Having protected the surface of the host sewer a winching machine is placed above the upstream manhole, a line is pulled to the downstream manhole, and there the liner is attached to its end. The pipe liner is pulled through at a controlled speed and pulling force. After that, to a specially prepared end of the pipe liner a steam hose is connected through which air is fed under pressure to calibrate the position of the pipe liner inside the rehabilitated sewer. Once the pipe liner is calibrated, steam brought to appropriate pressure and temperature is fed into the pipe liner. This process is continued until the liner is cured, in accordance with internal guidelines and procedure that complies with ISO 9001. After the installation, a milling cutter is used to cut off the ends in the upstream and downstream inspection chambers, as well as “blank” openings for connections in the cured pipe. During the installation process several parameters are recorded, namely: pressure inside the pipe liner during all the stages of the installing and curing process, as well as continuous temperature and time readings from all control points throughout the curing process.

5. INSPECTION

CCTV inspection

Once the installation is finished and lateral house drains are opened a CCTV acceptance inspection is made and recorded on a VHS cassette or CD. At the same time an inspection report is prepared.

Tests

In accordance with PN-EN 13566-1, 13566-4 and PN-EN 1610.

6. DEFECT REMEDIATION

Any defects are made good with the help of a camera-controlled robot and/or by patching with short sections of the pipe liner.

REHABILITATION USING UV LIGHT CURED CIPP LINING

Trade name – UV CIPP sleeve
Materials – glass fiber mat + polyester resin
Curing – UV light
Suppliers – Berolina, Impreg, Saertex
Diameter range – DN200–800
Scope of application – SBK

TECHNICAL DESCRIPTION OF REHABILITATION WITH A PIPE LINER CURED IN PLACE (CIPP) WITH UV LIGHT

In accordance with PN-EN 752-5; 13689; ISO 11296-1; ISO 11296-4.

1. MATERIAL

The components of the pipe lining are chosen in accordance with PN-EN 13566-4, Table 1. In the case of UV light cured CIPP products one can use unsaturated polyester (UP) or vinyl ester (VE) resins. The carrier can be fiber glass.

2. LINER INSTALLATION EQUIPMENT

  • sewer cleaning machine (jetting truck) remote controlled sewer inspection camera remote controlled equipment for internal sewer milling UV light curing system hoisting machine (winch) pipe liner calibration equipment by-pass equipment (pumps, hoses) test equipment

3. PREPARATION FOR THE INSTALLATION

Technical evaluation of the sewer

Before the rehabilitation the pipe is jet-cleaned with a sewer cleaning machine placed on a truck. After that the pipeline is inspected with a remote-controlled camera. The analysis of the video from the sewer inspection forms the basis to create a detailed computer report on the technical condition of the pipe. On the basis of report data the sewer is classified depending on its technical condition.

Selecting the rehabilitation method

Depending on how the sewer is damaged or destroyed and its classification to a specific group, depending on its technical condition an appropriate rehabilitation method is selected. After the evaluation of the sewer’s technical condition one should analyze geodetic data, groundwater level with respect to the base of the sewer, road traffic exposure, and other parameters that have influence on the selection of parameters of the used liner that is to be applied and on the basis of the above select an appropriate CIPP pipe during the design phase. On the basis of the known Young (E) modulus, specific for the proposed carrier, the designer selects the thickness of the CIPP liner.

Saturation of the pipe liner

Using negative pressure the pipe liner is saturated with resin in controlled conditions.

Storage and transportation to the construction site

The resin-saturated pipe liner is stored in a dark place protected against UV rays. From the place of storage the pipe liner is delivered to the construction site in containers or boxes that ensure optimal transportation conditions.

4. INSTALLATION

Once the damaged section of sewer is taken out of service a slip sheet is pulled into it. Having protected the surface of the host sewer a winching machine is placed above the upstream manhole, a line is pulled to the downstream manhole, and there the liner is attached to its end. The pipe liner is pulled through at a controlled speed and pulling force. After that, to a specially prepared end of the pipe liner a sluice is connected through which a set of UV lamp carriages will be inserted, and a pressure hose is connected through which air is fed under pressure to calibrate the position of the pipe liner inside the rehabilitated sewer. Once the pipe liner is calibrated, through the sluice a set of carriages with UV lamps is inserted into the pipe liner. The UV lamps emit light at an appropriate length. The curing process of the pipe liner results from UV light while the carriages with UV lamps are being drawn at a preset speed determined by the size of the rehabilitated sewer and thickness of the pipe liner. This process is continued until the liner is cured, in accordance with internal guidelines and procedure that complies with ISO 9001. After the installation, a milling cutter is used to cut off the ends in the upstream and downstream inspection chambers, as well as “blank” openings for connections in the cured pipe. During the installation process several parameters are recorded, namely: pressure inside the pipe liner during all the stages of the installing and curing process, as well as continuous readings of the carriage speed and UV light wave length.

5. INSPECTION

CCTV inspection

Once the installation is finished and lateral house drains are opened a CCTV acceptance inspection is made and recorded on a VHS cassette or CD. At the same time an inspection report is prepared.

Tests

In accordance with PN-EN ISO 11296-1, 11296-4 and PN-EN 1610.

6. DEFECT REMEDIATION

Any defects are made good with the help of a camera-controlled robot and/or by patching with short sections of the pipe liner.

REHABILITATION USING TOP HAT PROFILES

Trade name – Top hat rehabilitation
Materials – polyester mat + epoxy resin
Curing – intrinsic
Suppliers – Epros
Diameter range – DN 150 – DN 600 / DN 100 – DN 200 / 30°- 90°
Scope of application – SBK

TECHNICAL DESCRIPTION OF REHABILITATION USING TOP HAT PROFILES

In accordance with PN-EN 752-5; 13689; ISO 11296-1; ISO 11296-4.

1. DESCRIPTION OF METHOD

Drain LCR (Lateral Connection Repair) Liner system is used to rehabilitate and ensure a permanent seal between the main pipe and connector pipes and laterals leading to house drains of a diameter of up to 300 mm. For that purpose one can choose either LCR top hat profiles or LCR liners. An LCR top hat profile seals a connection between two pipes in the main pipe using only the edges, while an LCR liner is made in the main pipe, just like a short liner.

2. LINER INSTALLATION EQUIPMENT

  • sewer cleaning machine (jetting truck) sewer inspection camera compressor power generator EPROS LCR machine by-pass equipment (pumps, hoses)

3. REHABILITATION PROCESS OF LATERAL CONNECTIONS

Using the LCR machine one can rehabilitate the inlet of a house drain into the main sewer with the use of a so-called short liner and at the same time rehabilitate a predefined section of the house drain, or one can install an LCR top hat profile. This is performed with a preformed, extensible hose, which is a profiling element. The hose, which on the side surface has a cylindrical shape (packer hose) for the main pipe, has a centrally located additional cylinder (connector pipe hose) set at a 45° or 90° angle. The side connector pipe hose is inserted before the rehabilitation into the packer hose together with the LCR lining or LCR top hat profile which have the same form of the profiling element. Following the above, air is deflated from the packer hose and connector pipe hose. This ensures that the material for the rehabilitation (LCR lining or LCR top hat profile) does not slip off the required place. The machine is placed at the rehabilitation point with the use of a fiber glass rod and 2 telescopic wheel assemblies. The unit can be rotated axially at the point of the rehabilitation using the wheel assemblies and a rotation drive. A camera mounted on the machine helps position it precisely. Then from a control panel the expansion mechanism (pathfinder) is positioned. It lifts a basket and presses an integrated brim against the pipe wall. Following the above, the packer is withdrawn with the fiber glass rod and the brim is slid into the lateral opening. However, if the outlet opening cannot be found the machine can be repositioned so that the expansion basket slides into the lateral opening. Once the positioning is finished the packer hose is inflated, the connector pipe hose with the lining is inserted into the house lateral and the basket withdraws. The insertion delay is achieved with a high strength line, which is driven and slowed down by a winch. A sound signal confirms the completion of the insertion into the lateral. After curing the lining, air is deflated from the machine and it can be removed from the rehabilitation point.

ADVANTAGES OF THE SYSTEM
Reliable installation method:

Insertion takes place only when the LCR basket is properly positioned.
The sound signal goes off only after the insertion has been completed.
Technical advantage: rehabilitation along bends and when pipes are dislocated can be achieved only with the insertion method.

Meets practical requirements: successful rehabilitation possible also in the presence of ground water, with little equipment required.

Cost efficiency: small investment cost, as only required packers are purchased.

Practical: light-weight, mobile machine, can be transported also on a light truck.

Flexibility: repair can be carried out using a pneumatic push rod or wheel assembly.

Availability: LCR packers can be positioned pneumatically at an angle which helps in axial insertion of LCR packers into the sewer

PODSTAWOWE ZALETY SYSTEMU

Niezawodny sposób instalowania:

  1.  Wprowadzanie jest możliwe tylko wtedy, gdy kosz LCR jest właściwie ustalony.
  2.  Sygnał dźwiękowy rozlega się tylko po całkowitym zakończeniu wprowadzenia.

Zaleta techniczna: tylko naprawy metodą wprowadzania umożliwiają naprawy na łukach i w przypadku przesunięcia się rur.

Zgodność z wymaganiami praktyki: skuteczne wykonanie naprawy jest możliwe również w obecności wody gruntowej, przy zastosowaniu niewielkiej ilości sprzętu.

Ekonomiczność: niewielki koszt inwestycji, gdyż kupuje się tylko niezbędne pakery.

Praktyczność: lekka, mobilna jednostka, którą można przewozić również w małym samochodzie.

Elastyczność: naprawę można przeprowadzić przy użyciu popychacza pneumatycznego albo wózka.

Dostępność: w celu łatwiejszego osiowego wprowadzania pakerów LCR do kanału, można je w razie potrzeby pneumatycznie ustawić pod kątem.

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