© предоставлено пресс-службой ТПУ
TOMSK, Oct 14 – RIA Tomsk. Scientists of Tomsk Polytechnic University (TPU) developed the device allowing to weld quickly and
cheaply seams of pipelines after magnetic defectoscopy; prototypes of the
device which doesn't have analogs are introduced by several oil and gas
companies of Russia, the press service of the university reported on Friday.
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It is explained that magnetic defectoscopy – is a way of checking pipes on
existence of cracks and deformations by means of their magnetization. At a
transmission of a magnetic flux through a detail in the locations of defects,
there is a consolidation of magnetic power lines on which it's possible to find
the damaged section of the pipe. The damaged part is cut out, and on it's place
put the new one. Further it is necessary to weld pipes together.
According to TPU, after checking by the magnetic defectoscope the welded elements
remain magnetized because of what it is impossible to carry out process of arc
welding. To degauss a pipe, oil industry workers and gas workers use the
special expensive equipment. Process of preparation for demagnetization is
long, the pipeline is blocked for days or two.
"Employees (TPU) proposed the innovative solution of this problem.
Developed by scientists device which doesn't have analogs for arc welding of
the magnetized products – is the inverter of welding current IST-201 – allows
to make welding of pipes without their preliminary demagnetization", –
reports the university.
It is specified that the device allows to carry out welding of pipes in few
hours, and instead of the whole group of personnel only welders are involved.
"Also the enterprise manages to save significantly on purchase and service
of the special equipment for demagnetization of a pipe", – is added in the
message.
According to the press service, prototypes of IST-201 are introduced at the JSC
"Surgutneftegas" enterprises, JSC "Tomskneft" EOC,
"Azot" and others. Tests on the operating objects of JSC
"Transneft-Tsentralnaya Sibir" and LLC "Gazprom transgaz
Tomsk" which have confirmed increase efficiency of the device are carried
out.