Hydrostatic pressure test

Hydraulic testing

In accordance with the practice widespread in most countries of the world, all pipes are subjected to hydrostatic pressure testing (hydrotesting) before they are put into service.

This test, which is one of the methods of non-destructive testing, is necessary to assess the strength of pipes and their density, as well as any equipment that operates under pressure.

Such an event as a hydraulic test of pipelines can be carried out at different stages of pipe operation. Most often, it is carried out immediately after the installation of communications, before commissioning. In addition, throughout the entire operation of pipelines, it is necessary to periodically conduct hydraulic testing of pipelines, which is a very important point, given the seriousness of the threat to human life and health, as well as the environment, which may arise in the event of pipe malfunctions or in the event of pipeline emergencies.

Hydraulic pressure testing of pipelines is mandatory in the following cases, regardless of the type of communication

  • In the manufacture of pipes, it is necessary to check their quality and reliability along with the quality and reliability of other pipeline components;
  • After the pipes are installed, appropriate tests are carried out to verify the performance of the communications;
  • It is also recommended to periodically test pipelines throughout their service life as a preventive measure.

    • Hydraulic testing of pipelines helps to identify whether there are any inconsistencies between pipes and their elements and the quality standards established by law. The test procedure usually includes several essential points. To determine the quality of pipes using the hydraulic test method, extreme operating conditions are artificially created in order to determine the reliability of the pipeline as accurately as possible. In this case, the test pressure is increased, and it can be 1.2 to 1.5 times higher compared to the normal pressure.

    SPE Ukrtruboizol conducts hydraulic pressure testing of pipelines for large diameter pipes in accordance with DSTU GOST 3845: 2019 (GOST 3845-2017, IDT) “Metal pipes. Hydrostatic pressure test methods” with the issuance of a certified test report of the appropriate type.

    Hydraulic testing of pipelines

    Parameters:

    • Pipe diameter – 530-1420 mm (20”-56”)
    • The length of the pipes is 6-12.5 mm.
    • The pipe wall thickness is up to 25 mm.
    • The test pressure is up to 18.6 MPa.

    The State Metrology Center ensures full compliance with the requirements for pipeline hydrotesting. After verification, a certificate is issued confirming that the testing equipment meets all the requirements for accuracy and pipeline testing methods.