Standard Pipe Services provides high-quality full length relining across several states. To date, we have installed over 1,000,000 LF of lining material and have become a leader in the field. We are known to take on complex projects that other relining companies may have turned down.
Installation
Resin saturated lining tubes are installed in a line section by winching or inversion. Once in place, we will introduce heat to induce the chemical catalyst or hardener to set off the curing process. The curing process is performed by steam or hot water. The situation will usually have a large factor on what type of curing method is recommended. Full-Length Lining techniques can be used to renovate most gravity line sections, culverts, water lines, gas lines, or pressure pipes. The length of the relining is situation dependent, but has the ability to go through several manholes, or catch basins.
Lining Preparation
All line sections must be prepared prior to the installation process. We will clean the line section using a jetter nozzle with high pressure water to remove any debris, or other materials from the line section. It’s important in this phase to remove as much of the debris as possible to create a smooth surface for the relining material. This includes cutting any protruding taps and removing their debris. In certain situations we may require additional repair work prior to the relining to take place. Additional repair work may include: installing a short cured in place point repair, or grouting laterals and joints.
Performing the Relining Process
The lining material is typically made of a non-woven polyester needle felt or glass fibre although for pressure pipes its normal to provide a woven product to ensure extra strength in order to withstand the internal pressures within the pipeline. A coating made from PU, PE or PVC protects the liner during transportation and the installation procedures. We work with multiple factories’s that prepare the liner with polyester, vinyl ester, epoxy or polypropelyne. Once the lining material is designed and ordered it is shipped to the job site in a refrigerated vehicle to ensure that the curing is not triggered prematurely. Lining material has a shelf life of 2 to 3 weeks.
Once the lining material is on site it will either be pulled or winched into place and inflated with steam or water by inversion. The amount of pressure applied is dictated by the job and performed carefully as not to create any stretching of the liner or wrinkling. Once the liner is in place the boiler will take over to cure the material. These boilers vary from small 90kw to large 3 million BTU, depending on the volume of water required to be heated. Curing temperatures vary depending on the resin used in each specific job. If we are performing the relining with steam we will generally see a stronger lining material than that of one cured with hot water.
Once the lining material has cured we will then slowly begin the cooling process to avoid any unnecessary stretching or shrinking of the material. At this point all laterals must be reinstated by cutting them out with a schwalm cutting tool. The trimmings will then be jetted out and removed from the line section for safe disposal. A post television video will then be created along with a report to show all work has been complete.
In situations where there are multiple laterals in the line section we will recommend grouting those laterals to reduce any additional infiltration.
