hailers; cleaning around underground belts with scoops and skid steers; and building air doors underground. “We worked with our client on managing and operating all assets as the EPCM handed over each asset,” Tyler says. “Once the mine was moving into operations, we either trained the client’s employee on the operations and maintenance of that asset or we gave our employees to the client to continue with their job.” CORE’s sister company, Atoskewin Industrial L.P., is still performing some of this work at K3 to date. Atoskewin Industrial is a general contracting and service-focused company, the result of a partnership between the SECON Group of Companies and the Ochapowace First Nation. As another example of CORE’s capabilities in action, Tyler also points to their work with CN Rail in 2018 at their main rail yard in Winnipeg, Manitoba. There, CN Rail had a water line break on a six-inch cast iron pipe which was directly situated under the multiple sets of railway tracks. To understand CORE’s solution to that problem, first you have to understand that they are a certified installer of Primus Line, which is a reinforced flexible liner with specifically-developed connectors which form a high-performance solution for a trenchless rehabilitation of pressure pipes or for setting up a robust independently placeable flexible line. This is a versatile liner system for transport of liquid and gaseous media. At CN Rail’s rail yard in Winnipeg, Tyler explains that the client “had a few options” – two of those options involved shutting down the tracks, excavating the line, and either replacing the line or installing a liner in the existing line. “If they were to go the route of shutting down the use of the rail line and digging up the pipe it would have cost the company a substantial amount overall and would have delayed many shipments,” he says. “Instead, we worked along Raedlinger Primus Line to design a liner to fit this application and got to work.” “In preparation of the installation of the Primus Line system, we isolated the flow of water to guarantee no water would be present during the renovation time. In a first step, we excavated an entrance and pull pit on either side of the multiple sets of tracks and cut out a small section of pipe. The pipe was then CCTV inspected to assess the condition of the host pipe.” “Then we performed mechanical cleaning of the host pipe using rubber pigs,” Tyler continues. “The 30 meters of six-inch liner was delivered prefolded into U-shape on a transport reel directly to the site. A pulling head was mounted to the start of the liner and connected to a rotation joint and subsequently to the cable of a pulling winch. The liner was installed and was re-rounded using compressed air. The Primus Line ANSI flanges were installed on both ends of the pipe section and were successfully pressure-tested and reconnected to the existing pipeline.” “The total project was completed in four days and the life of the existing asset was extended by at least 50 years.” THE CONSTRUCTION SOURCE CANADA
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