DNV DNV-OSS-301 PDF

Scope of application for certification 

This Offshore Service Specification applies to certification and verification during the design, construction and operation of pipeline systems. 

This OSS describes the necessary activities to be carried out to obtain an initial DNV pipeline system certificate of conformity and how to maintain this certificate.

Statutory certification of pipeline systems to the requirements of National Authorities is not included specifically in the scope of application of this OSS. Such certification shall be governed by the regulations of the appointing authority. However, if detailed procedures are not given by these authorities, this OSS will be used by DNV as a guideline for its work. 

The primary scope of the certification work is the verification of the integrity of the pipeline, or its capacity to contain the contents under the specified conditions. Other aspects, such as the verification of the environmental impact of the pipeline system, or its fitness for purpose with respect to flow capacity and flow assurance, may be included in DNV's scope of work, if desired by the client.

Scope of application for verification 

This OSS may be adopted for the verification of parts of a pipeline system or selected project phases. 

This OSS describes the principle of a levelled verification involvement, which easily can be used in communications about the extent and scope of verification activities that are not part of a scheme for pipeline certification. 

This principle applies both to internal company verification (second party) as well as any obligations of licensees' for external verification (third party) in waters where this is applicable.