Introduction

The purpose of this document is to describe DNV's recommendations for a recertification process of well control equipment for the Norwegian Continental Shelf. This recertification process can be applied also for other Shelf states.

It is DNV's recommendation that recertification of Blow Out Preventers and other well pressure control equipment used for drilling, completion, workover and well intervention operations, should be performed at least every five years.

The purpose of a recertification process is to verify and document that the equipment condition and properties are within the specified acceptance criteria as well as the specified recognized codes and standards. The recertification shall ensure that documentation of the condition of the equipment is available.

If repair/modification is performed during a recertification interval, the methodology described in this recommended practice may be used to prepare for a future recertification process. Alternatively, a complete recertification process may be appropriate and included in addition to the repair/modification scope to reschedule the future recertification intervals.

For design and fabrication of new equipment, the methodology and requirements described in this recommended practice may be used to determine guidelines and recommendations regarding documentation and traceability requirements for later recertification processes.