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The Uponor Infra company helps to manage the crisis situation at the “Czajka” treatment plant

The Uponor Infra company helps to manage the crisis situation at the “Czajka” treatment plant

 

At the end of August this year, in Warsaw, a failure occurred in the system transferring sewage to the Czajka wastewater treatment plant. Both lines of the collector located under the bed of the Vistula River had suffered damage. As a result, a controlled discharge of waste into the river was decided on. The situation in the capital city was being followed by the whole of Poland, because the problem of sewage discharge also affected all the cities located on the Vistula River north of the city. After 12 days of controlled discharge into the Vistula River, sewage from seven districts of left-bank Warsaw flowed to the Czajka plant again. 

An emergency pipeline was constructed – in world-record time

In the capital city, after the failure of the GRP collector, it was decided to build temporary pipelines. This was achieved using 1-m-diameter PEHD pipes with a total length of 2200 m (two 1100-m sections each), produced by Uponor Infra. Part of the pipeline (approximately 250 m in total) was laid on a military-built pontoon bridge. The pace of the work was staggering. As a rule, such projects are carried out over a period of months, but we produced, delivered, and connected the pipes in eight days, these being finally laid on the pontoon bridge. In the opinion of Wojciech Skowyrski, Chief Engineer  Construction, such an operation constitutes a world record.

During the action aimed at stopping the pollution of the Vistula by the sewage, our crew worked 24 hours a day. Six operational teams were sent to the construction site, and, in total, including personnel from the technical, production, prefabrication, logistics, sales, and marketing departments, approximately 50 of our employees were involved in the project. Despite this speed, all activities were carried out under proper supervision, and in accordance with health-and-safety rules.

Reliable PEHD-pipe connections

After the PEHD pipes were delivered to the construction site, we joined them by means of butt welding, which ensured the uniform strength of the structure along its entire length, and, what is very important, in the place of joining. The welding itself took six and a half days.  146 welds were made. The whole temporary plant was operated and supervised by the Army and the “Wody Polskie” State Water Management Company.

PEHD polyethylene systems are perfect for the most-difficult operating conditions, even in areas affected by mining, which proves their very high quality and strength parameters. They are resistant to abrasion, corrosion and exposure to chemicals in soil, water, or in transmitted media. They are also characterised by durability, tightness, and flexibility. They are used, e.g., as process pipelines for chemical plants, or as cooling-water pipelines in power plants.

Due to the fact that PEHD systems are characterised by such high parameters and reliability, even in extreme conditions, and at the same time their installation is relatively fast, it was decided to build pipelines from our ducts in the crisis situation which had occurred in Warsaw.

We were convinced that our systems would once again prove themselves in atypical and demanding conditions. We made every effort to complete the works at lightning speed. It was possible thanks to the commitment and hard work of our employees, and all other people cooperating with us, to which we would like to express our gratitude.