Global Patent Index - EP 1728895 B1

EP 1728895 B1 2009-02-11 - Surveillance method for detecting the approach of a conductive body to a cathodically protected pipeline for fluids

Title (en)

Surveillance method for detecting the approach of a conductive body to a cathodically protected pipeline for fluids

Title (de)

Ein Überwachungsverfahren zum Feststellen einer Annäherung eines leitfähigen Körpers an eine mit einem kathodischen Schutzstrom beaufschlagte Fluid-Transportpipeline

Title (fr)

Méthode de surveillance pour détecter l'approche d'un corps conducteur à un pipeline pour fluides cathodiquement protégé

Publication

EP 1728895 B1 (DE)

Application

EP 06006493 A

Priority

DE 102005025824 A

Abstract (en)

[origin: EP1728895A1] The pipeline (1), for gas or oil or water, carries a cathode protective current for voltage values (U1,U2) to be measured at given time intervals at least at two measurement points (3). A change in the difference between the measurements indicates the approach of a conductive body between the measurement points e.g. a construction vehicle and the like, which could damage the pipeline and also shows any pipeline damage and its location. The measurement points are =25 km apart and preferably at =5 km intervals.

IPC 8 full level (invention and additional information)

C23F 13/04 (2006.01); G01R 27/14 (2006.01); G01R 27/18 (2006.01)

CPC (invention and additional information)

C23F 13/04 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DOCDB simple family

EP 1728895 A1 20061206; EP 1728895 B1 20090211; AT 422566 T 20090215; DE 102005025824 A1 20061207; DE 502006002788 D1 20090326; DK 1728895 T3 20090525; ES 2322489 T3 20090622