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VERFAHREN UND VORRICHTUNG ZUR ÜBERWACHUNG DES MECHANISCHEN VERHALTENS EINER TIEFSEE-LEITUNG ZUM TRANSPORT VON UNTER DRUCK STEHENDEN FLÜSSIGKEITEN

Patentnummer:EP3411669B1
IPC Hauptklasse:G01B11/16
Anmelder:CEMENTYS (1)
SAIPEM S.A. (1)
SAIPEM SA (1)
Erfinder:AGOUMI JALIL (1)
AXEL SUNDERMANN (1)
FRANÇOIS-RÉGIS PIONETTI (1)
JALIL AGOUMI (1)
JEAN-BAPTISTE PARIS (1)
LAMOUR VINCENT (1)
PARIS JEAN-BAPTISTE (1)
PIONETTI FRANCOIS-REGIS (1)
SUNDERMANN AXEL (1)
VINCENT LAMOUR (1)
Anmeldung:02.02.16
Patenterteilung:24.11.21
Einspruch bis:24.08.22

Abstract / Hauptanspruch
A method of monitoring mechanical behavior of an undersea pipe (2) transporting fluid under pressure and made by assembling a plurality of unit pipe elements (4). A calibration step is performed consisting of using a measurement cable having an optical fiber sensor to measure deformations experienced by each pipe element while it is subjected on land to various mechanical stresses in predetermined directions and magnitudes, and, on the basis of the measurements, establishing the mechanical signature of each pipe element. A monitoring step is performed consisting of using a measurement cable (18) having an optical fiber sensor that makes uses Brillouin backscattering and is helically positioned at constant pitch (p) on each pipe element with the handedness of the helical pitch alternating for two adjacent pipe elements to recover variations in optical signal injected into the sensors while the pipe is in service.


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