DNV DNV-OS-J301 [ Revised ]

General

Introduction

This standard provides principles, technical requirements and guidance for the design and construction of units built to satisfy the service notation "Wind Turbine Installation Unit"

The notation may be combined with other DNV notations if found relevant: Examples may be:

-"SELF ELEVATING WIND TURBINE INSTALLATION UNIT"

-"WIND TURBINE INSTALLATION and CRANE UNIT".

The standard has been written for column stabilised or self-elevating units intended for repeated installations/maintenance of wind turbine equipment, including foundations, nacelles, towers, blades, etc., in weather restricted operations.

Design and construction requirements for assignment of service notation Wind Turbine Installation Vessel are provided in DNV Rules for Classification of Ships Pt.5 Ch.7 Sec.22. This is applicable if the vessel is not self-elevating or column-stabilized.

Coastal State and Statutory regulations may include requirements in excess of the provisions of this standard depending on size, type, location and intended service of the offshore unit/vessel.

Organisation of this Standard

The standard is organised with a general section containing common requirements and sections containing specific requirement for different types of offshore units listed in [1.4.1]. In case of deviating requirements between general sections and the object specific sections, requirements of the object specific sections shall apply.