JIP seeks to define jackup drilling rig component stresses

Offshore staff

HØVIK, NorwayDNV GL has formed a joint industry project (JIP) to provide guidelines on determining relevant wear criteria for jacking systems in jackup rigs.

The “Wear acceptance criteria for jacking systems” JIP, due to start early next year, has support from 11 companies including drilling contractors.

It will build on a DNV GL Recommended Practice issued last year to address the maintenance and inspection challenges associated with a jackup system.

The goals are to document relevant design arguments, considerations, and calculations to enable the industry to define acceptance criteria and develop guidance on the correct assessment of jacking systems in a recommended practice.

Michiel van der Geest, product manager offshore classification, DNV GL - Maritime, said: “Defining maximum limits of wear across all parts of a jacking system is technically complex. It not only involves the interaction of all elements of the system, including the different materials applied, but also relevant operational and maintenance strategy considerations.

“Incorrect or unclear assessments can increase cost and also the reliability and availability of jacking systems. By creating a clear guidance this JIP will ultimately improve asset management and reduce delays and maintenance costs.”

Philippe Gadreau, chairman and CEO of NOV-BLM, said: “There is a clear benefit in participating in this JIP, taking into consideration the need of users, class authorities, and OEM to have a common language when talking about jacking systems.

“The recommended practice which will be issued from this JIP will give the users confidence in long-term predictive operation, supported by OEM diagnosis.”


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