Today in Russia the main cleansing methods are the methods “pipe in a pipe” (relining) and the old pipe breaking with a simultaneous laying of new polyethylene lash. The total role of this cleansing methods is more than 90% in a comparison with other pipeline cleansing methods.

By the pipelines cleansing our company use the technical equipment Grundoburst 1250 G, the leading world producer of technique for the trench less engineering nets repair of TRACTO-TECHNIK company, Germany.

This equipment is used for the trench less repair steel, wrought iron, concrete, reinforced concrete, ceramics, asbestos cement, plastic pipelines of diameter 200-600 mm.

As a rule, the choice of pipeline cleansing method they begin always with a “pipe in pipe” method (relining) as a more economical.

First of all they should select the diameter of plastic pipe, that will maximal correspond to the diameter of repairing pipeline.

At that it is necessary to consider, what if for the pipes connecting will be used the butt-welding, so in a butt area will build the clamp, the height of them depending on the diameter of welded pipes can reach till 15 mm. This height they should consider by the gap determination between the external surface of repairing pipe and pulled new one.

Its not depending on the decrease in this cases of internal diameter of repairing pipeline area, its admission in a number of cases is practically not decreasing due to the low hydraulic resistance of new plastic pipe.

In a case if the cleansing holding with a method “pipe in a pipe” will not allow to create the necessary pressure in a pipeline repairing area or they need the diameter increase on the repairing area, so the cleansing with a breaking of old pipe is used.

In this cases our company is fulfilling the cleansing holding with a static breaking. This method had excellent made a good showing by the works in a complicated hydro-geological conditions, by the immediate nearness from the repairing area of other communications, constructions.

The work scheme Grundoburst