S3 SONCINI - RELINING, C.I.P.P., NO DIG, LINER, PIPELINE, SEWER, VIDEOINSPECTION, SEWER, REHABILITATION , RENOVATION WATER PIPE, NON-INVASIVE, NON-DISRUPTIVE

relining, c.i.p.p., no dig, liner, pipeline, sewer, videoinspection, sewer rehabilitation, renovation water pipe, non-invasive, non-disruptive, tube, manholes, culverts, infiltrations, leaks-oil pipe–refineries, water-lines, liner, lining, resin, trenchless, dig, pressure-drilling, inspection, tube-cctv, c.i.p.p., no dig-curing, liner, sewers-renovation, invasive, disruptive, waterhead, buried, public, health, preliner, needle felt, glass fibre/fiber, polyeste, epoxy, effluents

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S3 Soncini s.p.a. is a leading rehabilitation company operating in the field of structural, NO-DIG renovation of underground pipes and infrastructure, and in particular the buried transmission and distribution pipeline system. S3 Soncini s.p.a. patented trenchless technology FOREVER PIPE has been successfully applied to numerous fields including urban sewers, industrial pipelines and irrigation systems.

FOREVER PIPE is a highly technological system designed and engineered to provide for the reconstruction and rehabilitation of pipelines and conduits by the installation of a structural resin-impregnated flexible tube, which is tightly formed to the original conduit. This process is specifically recommended for externally damaged or internally degraded mains due the benefits of trenchless construction for the recovery of the full flow rate of any buried transmission and distribution pipeline system. This process of relining belongs to the group of the most widely-used pipeline rehabilitation methods called the cured-in-place pipe (CIPP) lining method. What's unique about this Cured-In-Place-Pipe (CIPP) technology is that it combines custom-engineered felt tubes with thermosetting resins to reconstruct pipelines from existing access points returning the pipeline to service within a matter of hours or days as opposed to the weeks or months required for conventional open trench repairs. Importantly, this method of pipe rehabilitation involves very little disruption to the site or facility and avoids unnecessary social/environmental costs associated with digging and replacing buried pipeline, long-term traffic disruption and diversion, significant increase of ambient emissions due to the permanent site equipment and machines, discontinued utilities/supplies and visible modifications of the original pavement.

C.I.P.P. (an English acronym standing for “Cured In Place Pipe”) techniques are presently referred to the North American International Standards ASTM F1216 and the Italian Standards UNI EN 13566 – 4 and UNI EN 13689. The process of FOREVER PIPE was patented by S3 Soncini s.p.a. in 1994 to provide for the raw materials and the installation of a flexible tube (liner) made up of polyester-coated needle-felt reinforced with a glass fibres and impregnated with special thermosetting resins (polyester, vinylester and epoxy) prior to inversion inside the existing pipe. The lining inverted inside of the existing conduit is then heated to harden the resin by using fluid pressure (water or compressed air) resulting in a continuous, tight-fitting, pipe-within-a-pipe of outstanding mechanical properties and capable to provide best hydraulic and structural performance. The impregnated lining is normally inverted into the old pipe through an existing manhole. Whenever no access manhole is available on site, a limited extent of excavation works are required to build a shaft intercepting the existing pipeline. Hundreds of meters can be inverted in one go through It through one single access point even for large diameters.

The FOREVER PIPE structural, resin-impregnated carrier tube is tightly formed to the walls of the original conduit up and was engineered to handle any diameter up to 2,500 mm. The standard process includes preliminary production of customized liners in the same size as the flat section of the deteriorated pipe. The process negotiates any shape (oval, round and polycentric shapes) and any raw material of the existing pipe (concrete, bricks, tiles etc). A jointless liner is produced out of polyester-coated, fibre-reinforced needle-felt (glass or carbon fibre reinforcement). The wall thickness is designed in accordance to the formulas of the International Standards ASTM F1216 based on the actual conditions, the operating loads and the buckling forces applied on the existing pipe. An elastomeric (polyurethane, polyethylene and PVC) film applied to the outer face of the liner serves both to obtain the negative pressure required for felt saturation during the wet-out phase at the facility of the manufacturer and to avoid direct resin contact with water during the installation phase on site. Thermosetting, orthophtalic polyester resins are generally used for system impregnation. However, vinylester and epoxy resins may also come into question for certain applications depending on chemical composition, Ph and temperature of the fluid. The impregnated lining tube is then delivered to site and installed into the host tube by means of a special inversion tower set up over an access manhole.

Before inverting the liner, the host pipe is inspected by means of CC-TV camera and eventually cleaned by means of “canal-jet” state-of-the-art technology in order to clear the pipe from silt and debris as well as from Intruding connections, encrustation and other hard deposits susceptible of altering the original pipe section. The saturated felt tube is installed in the existing pipe through an access point via a temporary inversion tower (scaffold). A water head from nearby source, is used to fill the inversion standpipe and force the saturated felt tube inside-out (hence, the term inversion) and into the pipe being reconstructed. A steel ring (inversion ring) of the same diameter as the lining is firmly attached to the top of the inversion scaffold to provide for inversion start. The consistent force of the water head allows the liner to enter, advance and throughout perfectly fit to the walls of the host pipe. The liner is inverted through the pipe at the approximate speed of 1 m/min.

When inversion is complete, the water inside the liner is circulated through a boiler unit, using a pressure and a return hose attached to the trailing end to ensure that hot water passes through the whole length of the liner. The opposite end of the pressure and the return hose are connected to a boiler unit equipped with a boiler of minimum capacity 1,600,000 Kcal/h and with a suitable number of pumps to provide for water recirculation. The heating process is automatically controlled and regulated by means of a special software designed govern the heating cycle. When curing is complete, a new closed-fitting pipe is formed within the existing sewer pipe providing for superior mechanical features and resistance to the erosive and corrosive action of the effluent. The inner face of the new tube features a lower roughness than the original one which makes-up for slightly smaller inside diameter thus providing for unaltered flow capacity.

FOREVER PIPE is presently used for the rehabilitation of urban sewers and waste, black and industrial water mains. This technique is also recommended for industries (especially in the oil field) and all users subjected to ongoing environmental monitoring or to severe restrictions related to pollution of the water table or parasite water infiltrations into the process pipeline. This non-disrupting rehabilitation technique brings forth enormous benefits also in the field of agricultural irrigation where proofing against leaking of valuable water resource is increasingly more urgent.

http://www.s3soncini.it