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Sec.1: General [Table of Contents] B: Background (Informative)

DNV-OSS-301 Certification and Verification of Pipelines

[-] Sec.1: General
[-] A: General

Sec.1
A. General

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A 100   Introduction

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101   This Offshore Service Specification (OSS) gives criteria for and guidance on certification of complete pipeline systems and verification of the integrity of parts or phases of pipeline systems.

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A 200   Objectives

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201   The objectives of this document are to:
—describe DNV's certification and verification services for pipeline systems
—provide guidance for owners and other parties for the selection of the level of involvement of those carrying out the certification and verification activities
—provide a common communication platform for describing extent of verification activities.

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A 300   Scope of application for certification

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

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302   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.

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303   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.

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304   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.

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A 400   Scope of application for verification

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

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402   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.

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403   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.

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404   

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A 500   Structure of this document

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501   This document consist of three sections and five appendices:
Section 1 gives the general scope of the document, informative background information, definitions and references.
Section 2 explains the principles of DNV pipeline system certification with its risk-differentiated levels of involvement, and how to define the level of involvement for a particular project.
Section 3 describes the certification process and the activities for each of the project phases. Furthermore, it describes the documents issued during and as a result of the certification process. The use of quality management systems is addressed here also.
Appendix A poses trigger questions for the selection of certification or verification level.
Appendix B lists the instances where DNV-OS-F101 requires acceptance or agreement.
Appendix C contains generic descriptions of project sub-phases.
Appendix D gives example certification documents.
Appendix E gives detailed scope of work tables for all phases and all level of involvement. These tables are the basis for the development of project specific scope of work tables.

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A 600   Structure of pipeline-related documents

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601   Reference is made to the foreword of this DNV-OSS. From the structure described there, documents relating to pipeline systems consist of a three-level hierarchy with these main features:
—Principles and procedures related to DNV's certification and verification services are separate from technical requirements and are presented in DNV Offshore Service Specifications.
—Technical requirements are issued as self-contained DNV Offshore Standards.
—Associated product documents are issued as DNV Recommended Practices.


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602   This hierarchy is designed with these objectives:
—Offshore Service Specifications present the scope and extent of DNV's services.
—Offshore Standards are issued as neutral technical standards to enable their use by national authorities, as international codes and as company or project specifications without reference to DNV's services.
—The Recommended Practices give DNV's interpretation of safe engineering practice for general use by industry.
Sec.1: General [Table of Contents] B: Background (Informative)