Add to favorite
 
123
Subscribe to our Newsletters Subscribe to our Newsletters Get Daily Updates RSS


Checking Pipelines Without Excavators
May 12, 2009 23:14


Corroded pipe

Russian researchers, who deal with diagnostics of heat and power objects, developed a technique for remote noncontact monitoring of municipal underground heat pipelines. The innovative technique detects corrosion in metal pipes, which is the main reason for their high breakdown rate, and helps finding defect locations without starting excavation works.

Research team from St. Petersburg performs diagnostics of underground heat pipelines by means of remote techniques of measuring heat and acoustic parameters and electrometry. Electrometric monitoring, for instance, gives information about insulating coating of pipelines and helps estimating damage, which corrosion did to pipes. Scientists know how to make results of their observations more statistically reliable – they simply combine electrometry and measuring heat parameters.

One of electrometric techniques is called “excitation-at-the-mass method” and in a few words it looks like this: electric current from a generator gets to an underground pipeline, while second electrode of feeding line is grounded far away from that place. Researchers measure electromagnetic field at the surface along pipe’s axis, and this field tends to change in places, where pipeline insulation is broken – in these places current “flows” from the pipe to the ground. Scientists claim that excitation-at-the-mass method can accurately show places, where pipe insulation cover is disturbed, and corrosion is likely to begin.

Another electrometric technique – natural electrical field method – allows defining location of corrosion zones on pipe exterior more exactly and estimating intensity of corrosion process. Scientists admit that these techniques are common for field exploration geophysics; however, these methods were adapted for using in urban environments, where dense residential development, asphalt coating and high level of industrial noise interfere measurements.

 

 

 
During one of the recent experiments, conducted in St. Petersburg, researchers estimated, how transmitter electrodes affected monitored electromagnetic field of a pipeline, and recommended most effective schemes of measuring equipment. Research, performed by Russian scientists, allows enhancing existing technologies, improving their accuracy and expanding range of use for remote sensing methods. These interesting and promising results will be reported at the meeting of American Geophysical Union in Toronto.

Researchers also emphasize the fact that developed diagnostics technique for underground pipelines is actively in use in St. Petersburg. Moreover, similar works with slight modifications were performed at heat networks of Vologda, Cherepovets, Vorkuta, Ukhta, Syktyvkar and some other cities of Russian Federation, and results of these experiments were used in developing programmes for major repairs and reconstruction of public utilities in these cities.

Source: RIA Novosti

Kizilova Anna


Tags: Russian Scientists     

Next Previous

You might also find interesting:

Russian Scientists Increased Accuracy of Optical Radar 10 Times New Wound-Healing Substance Created Space Aircraft Engine Engineered in Russia Microbes Fighting Oil Contamination Russias First Ever Transplantation of Bionic Eye









Comment on our site


RSS   twitter      submit



TAGS:
Andrey Rudenskiy  Perm  Sergey Urusevsky  St.Petersburg Museums  Russian Lakes  Syria  South Park  Russian hotels  Team Russia  Sergey Ilyushin  Samara Region  Bridges  Russian holidays  Classical Music  Mercedes-Benz Fashion Week Russia  Northern Fleet  Moscow Festival  Russian Realism  Andrey Panin  Arts and Crafts  Russian Cinema  Tryokhgorny  Russian scientists  Moscow  Russian science  Mikhail Bulgakov  Kungurskaya Ice Cave  Krasnodar Territory  Far East  Yuri Senkevich  New Films  Festivals in St.Petersburg  St. Petersburg  Russian business  Kaliningrad Region  Eduard Artemiev  Stavropol Territory  Exhibitions in Moscow  Russian economy  Kazan  Russian actors  international cooperation  Kyzyl  Red Line  Exhibitions in St. Petersburg  Russian tourism  Eduard Steinberg  Spacecrafts  Russian Ice Shows  Russia 


Travel Blogs
Top Traveling Sites