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DNV-OS-C501 Composite Components [Table of Contents] Sec.2: Design Philosophy and Design Principles

DNV-OS-C501 Composite Components

[-] Sec.1: General

SECTION 1
General

Sec.1
A. Objectives

Sec.1
A 100   Objectives

Sec.1 A
101   The main objectives of this standard is to:
—serve as a basic philosophy and standard
—provide an internationally acceptable standard for safe design with respect to strength and performance by defining minimum requirements for design, materials, fabrication and installation of load-carrying Fibre Reinforced Plastic (FRP) laminates and sandwich structures and components
—serve as a technical reference document in contractual matters between client and contractor and or supplier
—provide cost-effective solutions based on complete limit state design with reliability based calibration of safety factors
—reflect the state-of-the-art and consensus on accepted industry practice
—to provide guidance and requirements for efficient global analyses and introduce a consistent link between design checks (failure modes), load conditions and load effect assessment in the course of the global analyses.

Sec.1
B. Application - Scope

Sec.1
B 100   General

Sec.1 B
101   This standard provides requirements and recommendations for structural design and structural analysis procedures for composite components. Emphasis with respect to loads and environmental conditions is put on applications in the offshore and processing industry. The materials description and calculation methods can be applied to any applications. Aspects related to documentation, verification, inspection, materials, fabrication, testing and quality control are also addressed.

Sec.1 B
102   The standard is applicable to all products and parts made of composite material and may be applied to modifications, operation and upgrading made to existing ones. It is intended to serve as a common reference for designers, manufacturers and end-users, thereby reducing the need for company specifications.

Sec.1 B
103   This standard assumes that material properties such as strength and stiffness are normally distributed. If the properties of a material deviate significantly from the assumption of a normal distribution, a different set of safety factors than specified herein has to be used.

Sec.1 B
104   All properties shall be estimated with 95% confidence.

Sec.1
C. How to use the standard

Sec.1
C 100   Users of the standard

Sec.1 C
101   The client is understood to be the party ultimately responsible for the system as installed and its intended use in accordance with the prevailing laws, statutory rules and regulations.

Sec.1 C
102   The authorities are the national or international regulatory bodies.

Sec.1 C
103   The contractor is understood to be the party contracted by the client to perform all or part of the necessary work needed to bring the system to an installed and operable condition.

Sec.1 C
104   The designer is understood to be the party contracted by the contractor to fulfil all or part of the activities associated with the design.

Sec.1 C
105   The manufacturer is understood to be the party contracted by the contractor to manufacture all or part of the system. Two types of manufacturers can be distinguished: the material manufacturers, which supply the composite material or its constituents (i.e. resin, fibres) and the product manufacturers, which fabricate all or part of the system.

Sec.1 C
106   The third party verifier is an independent neutral party that verifies the design of a structure or component.

Sec.1
C 200   Flow chart of the standard

raster

Fig. 1   Flow chart of the standard

Sec.1
C 300   How to use the standard

Sec.1 C
301   All users should go through section 1 and section 2 describing the scope of the standard and the design principles.

Sec.1 C
302   The client and contractor(s) should specify the Design Premises according to section 3.

Sec.1 C
303   The design analysis should be performed by the designer according to section 6, section 7, section 8, section 9 and section 10. The main input for the Design Report should come out of these sections.

Sec.1 C
304   The contractor(s) and manufacturer(s) should specify the fabrication according to section 11.

Sec.1 C
305   The client and contractor(s) should specify the installation and repair procedures according to section 12.

Sec.1 C
306   The third party verifier should verify that the design documentation is according to the requirements of section 2E.

Sec.1
D. Normative References

The latest revision of the following documents applies:

Sec.1
D 100   Offshore Service Specifications

DNV-OSS-301Certification and Verification of Pipelines

Sec.1
D 200   Offshore Standards

DNV-OS-F101Submarine Pipeline Systems
DNV-OS-F201Dynamic Risers
DNV-OS-C105Structural Design of TLPs by the LRFD Method
DNV-OS-C106Structural Design of Deep Draught Floating Units
DNV-OS-C501Composite Components

Sec.1
D 300   Recommended Practices

DNV-RP-B401Cathodic Protection Design
DNV-RP-C203Fatigue Strength
DNV-RP-C205Environmental Conditions and
Environmental Loads
DNV-RP-F101Corroded Pipelines
DNV-RP-F104Mechanical Pipeline Couplings
DNV-RP-F105Free Spanning Pipelines
DNV-RP-F106Factory applied Pipeline Coatings for Corrosion Control (under development)
DNV-RP-F108Fracture Control for Reeling of Pipelines (under development)
DNV-RP-F201Titanium Risers
DNV-RP-F202Composite Risers
DNV-RP-O501Erosive Wear in Piping Systems

Sec.1
D 400   Rules


DNV Rules for Certification of Flexible Risers and Pipes
DNV Rules for Planning and Execution of Marine operations
DNV Rules for Classification of Fixed Offshore Installations

Sec.1
D 500   Standards for Certification and Classification notes

DNV CN 1.2Conformity Certification Services, Type Approval
DNV CN 7Ultrasonic Inspection of Weld Connections
DNV CN 30.2Fatigue Strength Analysis for Mobile Offshore Units
DNV CN 30.4Foundations
DNV CN 30.6Structural Reliability Analysis of Marine Structures

Sec.1
D 600   Other references

API RP1111Design, Construction, Operation, and Maintenance of Offshore Hydrocarbon Pipelines (Limit State Design)
API RP2RDDesign of Risers for Floating Production Systems (FPSs) and Tension-Leg Platforms (TLPs)
ISO/FDIS 2394General Principles on Reliability for Structures
IS0/CD 13628-7Petroleum and natural gas industries - Design and operation of subsea production systems - Part 7: Completion/workover riser systems
DNV-OS-C501 Composite Components [Table of Contents] Sec.2: Design Philosophy and Design Principles