Det Norske Veritas - Germanischer Lloyd

Offshore Riser Systems - Incorporates Amendment: April 2012
 N DNV-OSS-302

Annotation

Introduction

DNV provides various services related to dynamic riser systems, where the word dynamic is referring to a non-stationary riser. In the notation dynamic riser systems, the following are included:

- Metallic risers (i.e. steel, titanium)

- Composite risers

- Flexible pipes

- Umbilicals (i.e. individual or piggy-back)

- Loading hoses.

The DNV services include technical advice/assistance (consultancy activities) research and development services, in addition to more traditional design verification/product certification. The verification and certification services are carried out with basis in Rules, Standards, Regulations and customer requirements.

This Offshore Service Specification (OSS) provides criteria for and guidance to the above-mentioned services for either complete dynamic riser systems, or for separate/self-contained components of riser systems.

DNV is a recognised provider of technical advisory services, which can be directly connected with the development and design of deepwater riser systems.

For verification and certification, this Offshore Service Specification for dynamic riser systems aims at using the same principles/approaches as used in the Offshore Service Specification for submarine pipeline systems (DNV-OSS-301).