Tackling technical difficulties in hydraulic tests on large-diameter gas pipelines
CEPS carried out the stress-tests and related operations on international gas pipeline GAZELLE. Cleaning, calibration, stress-tests and drying were carried out on the DN 1400 pipeline, which runs across the mountains, negotiating a difference in elevation of almost 700 m.
In 2011 and 2012, a DN 1400 international gas pipeline, GAZELLE, was built in the Czech Republic – the first gas pipeline with this diameter running across the county; the full length of the gas pipeline was subjected to stress-tests. In the second half of 2012, CEPS carried out the stress-tests and related operations on LOT 1B from the Brandov border transfer station to the Syrovice line closing valve, having a length of 52.5 km.
Cleaning, calibration, stress-tests and drying were carried out on the pipeline, which runs across the Krušne hory Mts. negotiating a difference in elevation of almost 700 m. In the end, the gas pipeline was dried prior to its putting into operation.
The contribution describes the stress-test on the pipeline, focusing on the technically difficult solutions at the stage of the preparation of the stress-test project, the determination of the technical parameters for each of the sections, and the actual performance of the tests.
Read more in the article Tackling technical difficulties in hydraulic tests on large-diameter gas pipelines (PDF, Czech language, 1498 kB).