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2 134 836

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IPC

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Application

98105494/06, 1998-03-25

(22)

Actual filing date

1998-03-25

(45)

Published

1999-08-20

(72)

Inventor

Ljashenko G.F.Lisin V.N.Jakovlev A.Ja.Puzhajlo A.F.Spiridovich E.A.Savinova I.G.Akulova E.G.Lisin I.V.Ljashenko A.G.

(73)

Holder

Ljashenko Gennadij FedorovichLisin Vladislav NikolaevichJakovlev Anatolij JakovlevichPuzhajlo Aleksandr FedorovichSpiridovich Evgenij Appolinar'EvichSavinova Irina Gennad'EvnaAkulova Elena Gennad'EvnaLisin Igor' VladislavovichLjashenko Andrej Gennad'Evich

METHOD OF APPLICATION OF INSULATION COAT ON UNDERGROUND PIPE LINE EXCLUDING CORROSION PROCESSES AND ENSURING DETECTION OF LEAKS DURING OPERATION Russian patent published in 1999 - IPC

Abstract RU 2134836 C1

FIELD: erection and repair of underground pipe lines. SUBSTANCE: underground pipe line is placed in polymer hermetic envelope forming circular clearance. Pipe line is supported by longitudinal projections inside envelope and is located in offset position. Envelope is made from separate sections connected by transversal seams and sealed up at the ends. Envelope may be detachable. Interior of envelope is filled with dry air or inert gas. Interior of envelope is connected with monitoring devices located on surface of earth by means of hermetic branch pipe. Leaks are detected by monitoring devices. EFFECT: enhanced reliability of pipe line. 3 cl, 2 dwg

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RU 2 134 836 C1

Authors

Ljashenko G.F.

Lisin V.N.

Jakovlev A.Ja.

Puzhajlo A.F.

Spiridovich E.A.

Savinova I.G.

Akulova E.G.

Lisin I.V.

Ljashenko A.G.

Dates

1999-08-20—Published

1998-03-25—Filed

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