How to defrost a water pipe

For residents of the Russian regions, located south of the Arctic Circle, there are two options for solving the question.
First. The water pipe is placed in a previously prepared trench, the depth of which is not less than one meter from the surface. Bury it, let the water and wait for the arrival of cold. With the onset of winter, when the depth of freezing of the soil, according to experts, reaches 1.2 m here, at an ambient temperature below -20 degrees for two or three days the water pipe in such a trench will certainly defrost.
Second. If there is no time to wait for the arrival of winter frosts, pourpipewith water, liquid nitrogen. The result will be instant.
For those citizens who do not want to defrost water in winter, it is recommended to lay pipes at a depth below 1.2 meters. The line of the underground line is carried out in accordance with the requirements of building codes and regulations, providing for its mandatory waterproofing.Entering into a building or structure is done from a well filled with insulating material. In those households where the general closed water heating system from one boiler plant is used to heat the outhouse and outbuildings, and it is impossible to do without laying an overhead line, it is insulated with mineral insulation material to avoid defrosting.
To remove the ice plug (in case of its occurrence) from the metal water supply system in order to restore the liquid circulation in it, the pipe is heated by the open fire of the blowtorch.
Frozen plumbing, made of polymeric materials or metal pipes, is heated by boiling water or a stream of hot air coming from a building hair dryer or other similar equipment.

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