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DNV-OS-C401”Fabrication and Testing of Offshore Structures
DNV Offshore Codes are offered within the following areas: Version
DNV-OS-C401 ”Fabrication and Testing of Offshore Structures”
Jon R.Hansen 2007.04.16
DNV-OS-C401”Fabrication and Testing of Offshore Structures
This is what’s all about
A) Qualification, Quality and Safety Methodology 资格、品质和安全控制方法 B) Materials Technology 材料技术 C) Structures 结构 D) Systems 系统 E) Special Facilities 特殊设备 F) Pipelines and Risers 安装管道和竖管 G) Asset Operation 资产管理 H) Marine Operations 海工运营
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DNV-OS-C401”Fabrication and Testing of Offshore Structures” Some important aspects:几个重要方面
- Structural integrity and strength (Loads based on environmental conditions on actual location) - 结构形式和强度（载荷根据工作地点的实际环境） - Accidental loads to be included in Design Loads (DAL) - 设计载荷还考虑到可能受到的意外载荷 - Fatigue (attention to details)疲劳问题 - Maintenance保养维修 - Corrosion protection防腐 - In service inspection ( Access etc. should be planned and provided during newbuilding phase)使用过程中的检验 - Increased reliability of Marine systems, utility systems and equipment. - 提高各种系统和设备、设施的可靠性 - Safety systems (Fire, explosion, abandon installation etc.) - 防火、防爆、逃生等安全系统 - Shelf state requirements to accommodation and working environment - 当地的居住和工作环境要求
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DNV-OS-C401”Fabrication and Testing of Offshore Structures” Difference Ship Rules versus Offshore rules 船舶规范与海工规范不同的原因 Rules for Offshore projects are in some areas quite different from the traditional Ship Rules, due to long time on location with no or limited possibilities leave the location. (> 20 – 25 years service time) 海工产品必须在海上持续工作20－25年 船舶可以进坞进行检验（中间检验、特检）
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DNV-OS-C401”Fabrication and Testing of Offshore Structures”

DNV-OS-C401”Fabrication and Testing of Offshore Structures” DNV-OS-C401海工结构建造和试验
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11 March 2011
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DNV-OS-C401”Fabrication and Testing of Offshore Structures
Course Purpose. 培训目的

To give a brief overview of DNV offshore standards. 介绍DNV海工标准 To give basic knowledge of fabrication standard OS C-401 介绍海工建造标准OS C-401的基础知识
- CH. 1 INTRODUCTION 介绍 - CH. 2 TECHNICAL PROVISIONS技术条款 - CH. 3 CERTIFICATION AND CLASSIFICATIONrch 2011
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DNV-OS-C401”Fabrication and Testing of Offshore Structures”
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DNV-OS-C401”Fabrication and Testing of Offshore Structures
Offshore Standards.
海工标准

Provide technical provisions and acceptance criteria for general use by the offshore industry as well as the technical basis for DNV offshore services. 海工标准为海工建造提供技术条款和可接受的标准
CH. 1 INTRODUCTION A 200 Objective 201 The objectives of this standard are to: Provide an internationally acceptable standard to ensure the quality of all welding operations used in offshore fabrication, through identifying appropriate welding procedures, welder qualifications and test methods. 提供国际认可的标准，通过对焊接程序、焊工资格和测试方法的认证来保障 海工焊接质量 Serve as a technical reference document in contractual matters between purchaser and contractor. 为买方和承包人就合同问题提供技术参考文件 Serve as guideline for designer, purchaser and contractor 为设计者、买方和承包商提供指导 Specify minimum requirements for welding operations subject to DNV certification and classification. 将焊接工作的要求最细化，使其符合DNV的认证和分级要求
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DNV-OS-C401”Fabrication and Testing of Offshore Structures”
Offshore Standards 海工标准包括：

A: Quality and Safety Methodology 质量和安全控制方法 B: Materials Technology 材料技术 C: Structures 结构 D: Systems 系统 E: Special Facilities 特殊设备 F: Pipelines and Risers 安装管道和竖管

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DNV-OS-C401”Fabrication and Testing of Offshore Structures
Recommended Practices.

Provide proven technology and sound engineering practice as well as guidance for the higher level Offshore Service Specifications and Offshore Standards. 提供技术和录音实例以及提供高水平的海工服务规格和海工标准 指南。
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DNV-OS-C401”Fabrication and Testing of Offshore Structures”
Chapter 2 Technical provisions

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第二章：技术条款 Sec. 1 Welding Procedures and Qualification of Welders 焊接工艺和焊工取证 Sec. 2 Fabrication and Tolerances建造与公差 Sec. 3 Non-Destructive Testing无损探伤 Sec. 4 Other Tests其它试验 Sec. 5 Corrosion Protection Systems防腐系统 Sec. 6 Miscellaneous其它