Introduction

The purpose of this document is to describe DNV's recommendations for recertification of well control equipment. It is DNV's recommendation that a major overhaul/inspection 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 this inspection 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, thus ensuring that documentation of the condition of the equipment is available at all times. However, national petroleum safety authorities' regulations can differently regulate the interval and overhaul/inspection scope.

The recertification scheme should be used as a recommended methodology for other types of equipment which is subject to a complete overhaul, repair or modification.

The recertification scheme may be used to describe the document-, and verification requirements for design and fabrication of new well control equipment as well.