Standard
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AS ISO 19901.1:2022
[Current]Petroleum and natural gas industries — Specific requirements for offshore structures, Part 1: Metocean design and operating considerations
AS ISO 19901.1:2022 identically adopts ISO 19901 1:2015, which 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.
Published: 13/05/2022
Pages: 203
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
4.1 Symbols
4.2 Abbreviated terms
5 Determining the relevant metocean parameters
5.1 General
5.2 Expert development of metocean criteria
5.3 Selecting appropriate parameters for determining design actions and action effects
5.4 The metocean database
5.5 Storm types in a region
5.6 Directionality
5.7 Extrapolation to extreme and abnormal conditions
5.8 Metocean parameters for fatigue assessments
5.9 Metocean parameters for short-term activities
5.10 Metocean parameters for medium-term activities
6 Water depth, tides and storm surges
6.1 General
6.2 Tides
6.3 Storm surges
6.4 Extreme water level
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 Sea states — Spectral waves
8.3.1 Wave spectrum
8.3.2 Directional spreading
8.3.3 Wave periods
8.3.4 Wave kinematics — Velocities and accelerations
8.4 Regular (periodic) waves
8.4.1 General
8.4.2 Wave period
8.4.3 Wave kinematics — Velocities and accelerations
8.4.4 Intrinsic, apparent and encounter wave periods
8.5 Maximum height of an individual wave for long return periods
8.6 Linear wave models
8.7 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
11 Collection of metocean data
11.1 General
11.2 Common requirements
11.2.1 General
11.2.2 Instrumentation
11.3 Meteorology
11.3.1 General
11.3.2 Weather observation and reporting for helicopter operations
11.3.3 Weather observation and reporting for weather forecasting services
11.3.4 Weather observation and reporting for climatological purposes
11.4 Oceanography
11.4.1 General
11.4.2 Measurements and observations
11.5 Data quality control
12 Information concerning the annexes
12.1 Information concerning Annex A
12.2 Information concerning the regional annexes
Annex A
A.1 Scope
A.2 Normative references
A.3 Terms and definitions
A.4 Symbols and abbreviated terms
A.5 Determining the relevant metocean parameters
A.5.1 General
A.5.2 Expert development of metocean criteria
A.5.3 Selecting appropriate parameters for determining design actions or action effects
A.5.4 The metocean database
A.5.5 Storm types in a region
A.5.6 Directionality
A.5.7 Extrapolation to extreme or abnormal conditions
A.5.8 Metocean parameters for fatigue assessments
A.5.8.1 General
A.5.8.2 Fixed structures
A.5.8.3 Floating structures
A.5.8.4 Jack-ups
A.5.9 Metocean parameters for short-term activities
A.5.9.1 General
A.5.9.2 Metocean parameters for medium-term activities
A.6 Water depth, tides and storm surges
A.6.1 General
A.6.2 Tides
A.6.3 Storm surge
A.6.4 Extreme water level
A.7 Wind
A.7.1 General
A.7.2 Wind actions and action effects
A.7.3 Wind profile and time-averaged wind speed
A.7.4 Wind spectra
A.8 Waves
A.8.1 General
A.8.2 Wave actions and action effects
A.8.3 Sea states — Spectral waves
A.8.3.1 Wave spectrum
A.8.3.1.1 General
A.8.3.1.2 The JONSWAP spectrum and Pierson-Moskowitz spectrum
A.8.3.1.3 Swell Gaussian spectra
A.8.3.1.4 The Ochi-Hubble form for bimodal seastates
A.8.3.1.5 General multi-modal spectra
A.8.3.1.6 Applications
A.8.3.1.7 Definition of frequency
A.8.3.2 Directional spreading
A.8.3.2.1 General
A.8.3.2.2 Directional spreading factor
A.8.3.3 Wave periods
A.8.3.4 Wave kinematics — Velocities and accelerations
A.8.4 Regular (periodic) waves
A.8.4.1 Wave period
A.8.4.2 Wave kinematics — Velocities and accelerations
A.8.4.3 Intrinsic, apparent and encounter wave periods
A.8.5 Maximum height of an individual wave for long return periods
A.8.6 Fully nonlinear wave models
A.8.7 Wave crest elevation
A.9 Currents
A.9.1 General
A.9.2 Current velocities
A.9.3 Current profile
A.9.4 Current profile stretching
A.9.4.1 General
A.9.4.2 Effect of current profile stretching on hydrodynamic actions
A.9.5 Current blockage
A.10 Other environmental factors
A.10.1 Marine growth
A.10.2 Tsunamis
A.10.3 Seiches
A.10.4 Sea ice and icebergs
A.10.5 Snow and ice accretion
A.10.6 Miscellaneous
A.11 Collection of metocean data
A.11.1 General
A.11.2 Common requirements
A.11.2.1 General
A.11.2.2 Instrumentation
A.11.3 Meteorology
A.11.3.1 General
A.11.3.2 Weather observation and reporting for helicopter operations
A.11.3.3 Weather observation and reporting for weather forecasting services
A.11.3.4 Weather observation and reporting for climatological purposes
A.11.4 Oceanography
A.11.4.1 General
A.11.4.2 Measurements and observations
A.11.5 Data quality control
Annex B
B.1 Description of region
B.2 Data sources
B.3 Overview of regional climatology
B.4 Water depth, tides and storm surges
B.5 Winds
B.6 Waves
B.7 Currents
B.8 Other environmental factors
B.8.1 Marine growth
B.8.2 Sea ice and icebergs
B.8.3 Snow and ice accretion
B.8.4 Air temperature, humidity, and visibility
B.8.5 Sea water temperature and salinity
B.9 Estimates of metocean parameters
B.9.1 Extreme metocean parameters
B.9.2 Long-term distributions of metocean parameters
Annex C
C.1 Description of region
C.2 Data sources
C.3 Overview of regional climatology
C.4 Water depth, tides and storm surges
C.5 Winds
C.6 Waves
C.7 Currents
C.8 Other environmental factors
C.8.1 Marine growth
C.8.2 Tsunamis
C.8.3 Sea ice and icebergs
C.8.4 Snow and ice accretion
C.8.5 Air temperature, humidity, pressure and visibility
C.8.6 Sea water temperature and salinity
C.9 Estimates of metocean parameters
C.9.1 Extreme metocean parameters
C.9.2 Long-term distributions of metocean parameters
Annex D
D.1 Description of region
D.1.1 General
D.1.2 Grand Banks
D.1.3 Scotian Shelf
D.1.4 Deepwater
D.1.5 Gulf of St. Lawrence
D.1.6 Beaufort Sea
D.2 Data sources
D.3 Overview of regional climatology
D.3.1 Atlantic Canada
D.3.1.1 General
D.3.1.2 Icelandic Low
D.3.1.3 Bermuda High
D.3.1.4 Eastern Canada weather
D.3.2 Beaufort Sea
D.4 Water depths
D.5 Winds
D.6 Waves
D.7 Currents
D.8 Sea ice
D.8.1 Canadian east coast
D.8.2 Gulf of St Lawrence
D.8.3 Flemish Pass: Bay du Nord and Mizzen
D.8.4 Beaufort Sea
D.9 Icebergs
D.10 Ice management
D.11 Other environmental factors
D.11.1 Iceberg scour
D.11.1.1 Grand banks
D.11.1.2 Beaufort Sea
D.11.2 Snow and ice accretion
D.11.3 Reduced flying visibility
D.11.4 Marine growth
D.11.5 Daylight hours
D.11.6 Earthquakes
D.12 Estimates of metocean parameters
D.13 Sources of additional information
D.13.1 Information on meteorological parameters, e.g. prediction of severe weather, sea state and icing conditions
D.13.2 Oceanographic information
D.13.3 Water depths and tides
D.13.4 Ice-related information
D.13.5 Canadian east coast seabed conditions
Annex E
E.1 Description of the region
E.2 Data sources
E.3 Overview of regional climatology
E.4 Water depth, tides, storm surges and tsunamis
E.5 Winds
E.6 Waves
E.7 Currents
E.8 Sea ice
E.9 Other environmental factors
E.9.1 Air temperature, precipitation, humidity and visibility
E.9.2 Sea temperature and salinity
E.9.3 Snow, atmospheric icing and sea-spray icing
E.9.4 Waves in ice
E.10 Estimates of metocean parameters
E.10.1 Extreme metocean parameters
E.10.2 Long-term distributions of metocean parameters
Annex F
F.1 Description of the region
F.2 Data sources
F.3 Overview of regional climatology
F.4 Overview of regional hydrology
F.5 Water depth, tides, long-term water levels and storm surges
F.5.1 Water depth
F.5.2 Long-term water levels
F.5.2.1 General
F.5.2.2 Seasonal water level
F.5.3 Tides, storm surges and seiches
F.6 Winds
F.7 Waves
F.8 Currents
F.9 Other environmental factors
F.9.1 Marine growth
F.9.2 Air temperature, precipitation, humidity, pressure, clouds and visibility
F.9.2.1 Air temperature
F.9.2.2 Precipitation — Rainfall
F.9.2.3 Humidity
F.9.2.4 Visibility — Fog and dust storms
F.9.2.5 Daylight hours
F.9.2.6 Tornadoes/Waterspouts
F.9.3 Sea ice and icebergs
F.9.4 Snow, ice accretion and sea spray icing
F.9.5 Tsunamis
F.10 Estimates of metocean parameters
F.10.1 Extreme metocean parameters
F.10.2 Long-term distributions of wave parameters
Annex G
G.1 Description of region
G.2 Data sources
G.3 Overview of regional climatology
G.4 Water depths, tides and storm surges
G.5 Winds
G.6 Waves
G.7 Currents
G.7.1 General
G.7.2 Tidal currents
G.7.3 Surface-wind-driven currents
G.7.4 Density-driven currents (particularly near the outflow of large rivers)
G.7.5 Basin-response currents derived from tropical storms or strong monsoon surges
G.7.6 Internal waves
G.8 Other environmental factors
G.8.1 Marine growth
G.8.2 Snow and ice accretion
G.8.3 Tsunamis
G.8.4 Air temperature, humidity, pressure and visibility and rainfall
G.8.5 Seawater temperature and salinity
G.9 Estimates of metocean parameters
G.9.1 Extreme metocean parameters
G.9.1.1 General
G.9.1.2 Waters offshore Vietnam
G.9.1.3 Gulf of Thailand
G.9.1.4 Offshore Peninsular Malaysia
G.9.1.5 Offshore Natuna Island
G.9.1.6 Waters offshore Borneo
G.9.1.7 Offshore Philippines
G.9.2 Long-term distribution of metocean parameters — The impact of climate change
Bibliography
Cited references in this standard