Using CR Scanners to Inspect Offshore Platforms

Just six months after taking over operations from StatoilHydro, who managed the Ormen Lange field during its development phase, SHELL made the decision to acquire the most recent CR technology from DÜRR NDT.

The HD-CR 35 NDT was delivered shortly after being ordered in April 2008. A comprehensive three day training session offered hands-on and theoretical trials. Eivind Grønseth, Inspection Discipline Lead Norway believes that this offered a firm grounding for the successful integration of the CR technology, both for weld-seam and on-stream inspection, from the start.

DÜRR NDT helped to ensure the hassle-free running of the entire system from day dot, as the software adapted quickly to the usual workflow. This feature greatly simplified the process, allowing work to continue as usual with minimal disruption.

Using CR Scanners to Inspect Offshore Platforms

Image Credit: DÜRR NDT GmbH & Co. KG

The HD-CR 35 NDT is a one-of-a-kind device. It is the only CR scanner in the world with a proven BSR of 40 µm, according to EN 14784-1 and ASTM E2446 (Certificate No: BAM/ZBA/009/08).

Erlend Bjoerkvold, RT specialist of DÜRR´s local agent Holger Tecknologi, believes it is the ideal solution for moving from conventional chemistry and film-based inspection to an innovative and more sustainable CR technology.

One year later, and with excellent results, SHELL has since made the decision to furnish the Draugen platform with a similar device. This device was delivered back in May 2009.

Using CR Scanners to Inspect Offshore Platforms

Image Credit: DÜRR NDT GmbH & Co. KG

Using CR Scanners to Inspect Offshore Platforms

Image Credit: DÜRR NDT GmbH & Co. KG

According to Eivand Grønseth, shipping equipment offshore always has challenges. Due to this, it was decided that the best course of action was to invest in a device with a history of reliability and fitness for use on both on-stream and weld-seam inspection.

The Draugen Oilfield was first discovered back in 1984. With persistent output and thorough inspection and overhauling, it still has many years of service ahead, and the HD-CR 35 NDT will contribute to that goal.

There was great anticipation for the latest version of DÜRR´s image processing software, “D-Tect,” as it contains the brand new and fully automatic wall thickness measuring tool, which makes interpretation work much easier. Following three days of training in Molde, the system was sent to the rig.

This information has been sourced, reviewed and adapted from materials provided by DÜRR NDT GmbH & Co. KG.

For more information on this source, please visit DÜRR NDT GmbH & Co. KG.

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