RU93004627A - METHOD OF CONTROL OF THE CURRENT STATE AND DETECTION OF THE DEPOSITION OF THE PROTECTIVE COATING OF DIED OR SUBSURFACE PIPELINES AND OTHER METAL STRUCTURES - Google Patents

METHOD OF CONTROL OF THE CURRENT STATE AND DETECTION OF THE DEPOSITION OF THE PROTECTIVE COATING OF DIED OR SUBSURFACE PIPELINES AND OTHER METAL STRUCTURES

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Publication number
RU93004627A
RU93004627A RU93004627/29A RU93004627A RU93004627A RU 93004627 A RU93004627 A RU 93004627A RU 93004627/29 A RU93004627/29 A RU 93004627/29A RU 93004627 A RU93004627 A RU 93004627A RU 93004627 A RU93004627 A RU 93004627A
Authority
RU
Russia
Prior art keywords
protective coating
metal structures
current
current state
died
Prior art date
Application number
RU93004627/29A
Other languages
Russian (ru)
Other versions
RU2104440C1 (en
Inventor
Ривола Луиджи
Ди Либерто Себастиано
Капителли Джакомо
ди Вьязе Луцио
Original Assignee
СНАМ С. п.А.
Эниричерке С.П.А.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from ITMI920557A external-priority patent/IT1254251B/en
Application filed by СНАМ С. п.А., Эниричерке С.П.А. filed Critical СНАМ С. п.А.
Publication of RU93004627A publication Critical patent/RU93004627A/en
Application granted granted Critical
Publication of RU2104440C1 publication Critical patent/RU2104440C1/en

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Claims (1)

Способ контроля текущего состояния, выявления местоположения перфорационных дефектов и отслоения защитного покрытия подповерхностных или заглубленных трубопроводных магистралей или каких-либо металлических конструкций, заключающийся в катодной защите с использованием постоянного тока на основе регистрации суммарного электрического сопротивления, предопределяемого прохождением тока по цепи "трубопровод-защитное покрытие - земля", причем предлагаемый способ заключается в генерировании локальных синусоидальных переменных токов возбуждения (намагничивания) различной частоты в трубопроводной магистрали и измерении соответствующих ответных реакций (реплик) по напряжению с последующим сравниванием регистрируемых вольт-реплик контролируемой системы проводимости для индентификации на основе различия или совпадения сравниваемых частот состояния конструкции, т.е. подвержена или претерпела ее контролируемая часть отслоение покрытия вследствие корродирования или же защитное покрытие находится в состоянии разрушения.The method of monitoring the current state, identifying the location of perforation defects and peeling of the protective coating of subsurface or buried pipelines or any metal structures, which consists in cathode protection using direct current based on the registration of total electrical resistance determined by the passage of current through the pipeline pipeline - ground ", and the proposed method consists in generating local sinusoidal alternating currents in zbuzhdeniya (magnetization) of different frequencies in the pipe line and measuring the appropriate responses (replica) followed by the voltage comparing detected current-controlled conduction replicas for proxy authentication system based on the difference of the compared frequencies coincidence or design conditions, i.e., the controllable part of the coating due to corrosion or its protective coating is in a state of destruction.
RU93004627A 1992-03-11 1993-03-10 Method of checking buried or undersurface pipe lines and other metal structures for condition and for separation of protective coats RU2104440C1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITM192A000557 1992-03-11
ITMI920557A IT1254251B (en) 1992-03-11 1992-03-11 DEVICE AND PROCEDURE FOR THE MONITORING AND LOCALIZATION OF DEFECTS AND RELEASES OF THE PROTECTIVE COATING OF UNDERGROUNDED OR IMMERSED METALLIC PIPES OR STRUCTURES

Publications (2)

Publication Number Publication Date
RU93004627A true RU93004627A (en) 1995-12-20
RU2104440C1 RU2104440C1 (en) 1998-02-10

Family

ID=11362368

Family Applications (1)

Application Number Title Priority Date Filing Date
RU93004627A RU2104440C1 (en) 1992-03-11 1993-03-10 Method of checking buried or undersurface pipe lines and other metal structures for condition and for separation of protective coats

Country Status (10)

Country Link
US (1) US5404104A (en)
EP (1) EP0560443B1 (en)
JP (1) JP3156064B2 (en)
BR (1) BR9301125A (en)
CA (1) CA2091414A1 (en)
DK (1) DK0560443T3 (en)
ES (1) ES2092743T3 (en)
IT (1) IT1254251B (en)
NO (1) NO307804B1 (en)
RU (1) RU2104440C1 (en)

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CN108007974A (en) * 2016-10-31 2018-05-08 中国石油化工股份有限公司 A kind of method for evaluating dirty layer protectiveness
RU2690043C1 (en) * 2017-02-09 2019-05-30 федеральное государственное автономное образовательное учреждение высшего образования "Казанский (Приволжский) федеральный университет" (ФГАОУ ВО КФУ) Device for periodic inspection of welded joints between prefabricated reinforced concrete elements of building (structure)
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