Method and system for monitoring the performance of a pipe containing a pressurised fluid
AssigneeOxand
InventorsOlivier Bernard, Bruno Gerard
Life of this patent
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Abstract
A method of monitoring the performance of a pipe containing a pressurised fluid, the pipe including at least one current zone and singular zones. The method includes: the static monitoring of a pre-determined number of singular zones, in order to obtain circumferential dilatation information; and the calculation of the effective stiffness k(ti) of the pipe and of the measured residual steel section (As(ti) of same, using the above-mentioned circumferential dilatation information. The method can also include the dynamic monitoring of the pipe, in order to obtain information relating to the natural vibration frequencies and modes thereof.
Claims15
Method for monitoring the performance of a pipe containing a pressurized fluid, this pipe comprising at least one continuous run zone and singularity zones, characterized in that it comprises:
- a static monitoring of a predetermined number of singularity zones and/or continuous run zones, in order to provide circumferential expansion information, and
- a calculation of the effective stiffness K(ti) of the pipe and its measured residual steel cross-section As(ti) using said circumferential expansion information.
System for monitoring the performance of a pipe containing a pressurized fluid, this pipe comprising at least one continuous run zone and singularity zones, characterized in that it comprises:
- a device for static monitoring of a predetermined number of singularity zones and/or continuous run zones in order to provide circumferential expansion information, and
- means for calculating the effective stiffness K(ti) of the pipe and its measured residual steel cross-section As(ti) using said circumferential expansion information.
Dependencies are inferred from the claim text.