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NEN EN ISO 19901-1 : 2015

Current
Current

The latest, up-to-date edition.

PETROLEUM AND NATURAL GAS INDUSTRIES - SPECIFIC REQUIREMENTS FOR OFFSHORE STRUCTURES - PART 1: METOCEAN DESIGN AND OPERATING CONSIDERATIONS
Published date

01-12-2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
   4.1 Main symbols
   4.2 Abbreviated terms
5 Determining the relevant metocean parameters
   5.1 General
   5.2 Expert interpretation of the metocean database
   5.3 Selecting appropriate parameters for determining
       design actions or action effects
   5.4 The metocean database
   5.5 Storm types in a region
   5.6 Directionality
   5.7 Extrapolation to rare conditions
   5.8 Metocean parameters for fatigue assessments
   5.9 Metocean parameters for short-term activities
6 Water depth, tides and storm surges
   6.1 General
   6.2 Tides
   6.3 Storm surge
7 Wind
   7.1 General
   7.2 Wind actions and action effects
   7.3 Wind profile and time-averaged wind speed
   7.4 Wind spectra
8 Waves
   8.1 General
   8.2 Wave actions and action effects
   8.3 Intrinsic, apparent and encounter wave periods
   8.4 Two-dimensional wave kinematics
   8.5 Maximum height of an individual wave for long
       return periods
   8.6 Wave spectra
   8.7 Wave directional spreading function and
       spreading factor
   8.8 Wave crest elevation
9 Currents
   9.1 General
   9.2 Current velocities
   9.3 Current profile
   9.4 Current profile stretching
   9.5 Current blockage
10 Other environmental factors
   10.1 Marine growth
   10.2 Tsunamis
   10.3 Seiches
   10.4 Sea ice and icebergs
   10.5 Snow and ice accretion
   10.6 Miscellaneous
Annex A (informative) Additional information and
         guidance
    A.1 Scope
    A.2 Normative references
    A.3 Terms and definitions
    A.4 Symbols and abbreviations
    A.5 Determining the relevant metocean parameters
    A.6 Water depth, tides and storm surges
    A.7 Wind
    A.8 Waves
    A.9 Currents
    A.10 Other environmental factors
Annex B (informative) Discussion of wave frequency spectra
    B.1 The Pierson-Moskowitz spectrum
    B.2 The JONSWAP spectrum
    B.3 Comparison of Pierson-Moskowitz and JONSWAP spectra
    B.4 Ochi-Hubble spectra
Annex C (informative) Regional information
    C.1 General
    C.2 North-west Europe
    C.3 West coast of Africa
    C.4 US Gulf of Mexico
    C.5 US Coast of California
    C.6 East coast of Canada
Bibliography

Provides general requirements for the determination and use of meteorological and oceanographic (metocean) conditions for the design, construction and operation of offshore structures of all types used in the petroleum and natural gas industries.

DocumentType
Standard
PublisherName
Netherlands Standards
Status
Current

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