prEN ISO 19901-1

Oil and gas industries including lower carbon energy - Specific requirements for offshore structures - Part 1: Metocean design and operating considerations (ISO/DIS 19901-1:2024)

ISO 19901-1:2015 gives 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.
The requirements are divided into two broad types:
- those that relate to the determination of environmental conditions in general, together with the metocean parameters that are required to adequately describe them;
- those that relate to the characterization and use of metocean parameters for the design, the construction activities or the operation of offshore structures.
The environmental conditions and metocean parameters discussed are:
- extreme and abnormal values of metocean parameters that recur with given return periods that are considerably longer than the design service life of the structure,
- long-term distributions of metocean parameters, in the form of cumulative, conditional, marginal or joint statistics of metocean parameters, and
- normal environmental conditions that are expected to occur frequently during the design service life of the structure.
Metocean parameters are applicable to:
- the determination of actions for the design of new structures,
- the determination of actions for the assessment of existing structures,
- the site-specific assessment of mobile offshore units,
- the determination of limiting environmental conditions, weather windows, actions and action effects for pre-service and post-service situations (i.e. fabrication, transportation and installation or decommissioning and removal of a structure), and
- the operation of the platform, where appropriate.
NOTE Specific metocean requirements for site-specific assessment of jack-ups are contained in ISO 19905‑1, for arctic offshore structures in ISO 19906 and for topside structures in ISO 19901‑3.

Erdöl- und Erdgasindustrie - Spezielle Anforderungen für Offshore-Anlagen - Teil 1: Grundsätze für die Auslegung und den Betrieb auf dem offenen Meer

Industries du pétrole et du gaz naturel - Exigences spécifiques relatives aux structures en mer - Partie 1: Dispositions océano-météorologiques pour la conception et l'exploitation

La présente partie de l'ISO 19901 fournit des exigences générales relatives à la détermination et à l'utilisation des conditions océanographiques et météorologiques (« océano-météorologiques ») pour la conception, la construction et l'exploitation des structures en mer de tous les types utilisés dans les industries du pétrole et du gaz naturel.
Les exigences sont scindées en deux grandes catégories :
—    celles liées à la détermination des conditions environnementales en général, associées aux paramètres océano-météorologiques requis pour les décrire de manière appropriée ;
—    celles liées à la caractérisation et à l'utilisation des paramètres océano-météorologiques pour la conception, les activités de construction ou l'exploitation des structures en mer.
Les conditions environnementales et les paramètres océano-météorologiques examinés sont :
—    les valeurs extrêmes et anormales des paramètres océano-météorologiques qui se répètent à des intervalles de récurrence donnés nettement plus longs que la durée de vie en service de la structure ;
—    les distributions à long terme des paramètres océano-météorologiques, sous forme de statistiques cumulées, conditionnelles, marginales ou conjointes ; et
—    les conditions environnementales normales dont l'occurrence fréquente est attendue tout au long de la durée de vie en service de la structure.
Les paramètres océano-météorologiques sont applicables à :
—    la détermination des actions pour la conception des nouvelles structures ;
—    la détermination des actions pour l'évaluation des structures existantes ;
—    l'évaluation spécifique au site des unités mobiles en mer ;
—    la détermination des conditions environnementales restrictives, des fenêtres météorologiques, des actions et de leurs effets pour les situations de pré- et post-service (c'est-à-dire la fabrication, le transport et l'installation ou la mise hors service et l'enlèvement d'une structure) ; et
—    l'exploitation de la plate-forme, le cas échéant.

Naftna in plinska industrija, vključno z nizkoogljično energijo - Posebne zahteve za naftne ploščadi - 1. del: Določila za načrtovanje in obratovanje ob upoštevanju oceanografskih in meteoroloških vidikov (ISO/DIS 19901-1:2024)

General Information

• Status: Not Published
• Publication Date: 08-Mar-2026
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• Technical Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Drafting Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Start Date: 07-Nov-2024
• Completion Date: 07-Nov-2024
• Ref Project: oSIST prEN ISO 19901-1:2024 - Oil and gas industries including lower carbon energy - Specific requirements for offshore structures - Part 1: Metocean design and operating considerations (ISO/DIS 19901-1:2024)

Relations

• Revises: EN ISO 19901-1:2015 - Petroleum and natural gas industries - Specific requirements for offshore structures - Part 1: Metocean design and operating considerations (ISO 19901-1:2015)
• Effective Date: 29-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2024
Naftna in plinska industrija, vključno z nizkoogljično energijo - Posebne zahteve za
naftne ploščadi - 1. del: Določila za načrtovanje in obratovanje ob upoštevanju
oceanografskih in meteoroloških vidikov (ISO/DIS 19901-1:2024)
Oil and gas industries including lower carbon energy - Specific requirements for offshore
structures - Part 1: Metocean design and operating considerations (ISO/DIS 19901-
1:2024)
Erdöl- und Erdgasindustrie - Spezielle Anforderungen für Offshore-Anlagen - Teil 1:
Grundsätze für die Auslegung und den Betrieb auf dem offenen Meer (ISO/DIS 19901-
1:2024)
Industries du pétrole et du gaz naturel - Exigences spécifiques relatives aux structures
en mer - Partie 1: Dispositions océano-météorologiques pour la conception et
l'exploitation (ISO/DIS 19901-1:2024)
Ta slovenski standard je istoveten z: prEN ISO 19901-1
ICS:
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
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ISO/DIS 19901-1
ISO/TC 67/SC 7
Oil and gas industries including
Secretariat: BSI
lower carbon energy — Specific
Voting begins on:
requirements for offshore
2024-08-15
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Part 1:
Metocean design and operating
considerations
ICS: 75.180.10
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Reference number
ISO/DIS 19901-1:2024(en)
DRAFT
ISO/DIS 19901-1:2024(en)
International
Standard
ISO/DIS 19901-1
ISO/TC 67/SC 7
Oil and gas industries including
Secretariat: BSI
lower carbon energy — Specific
Voting begins on:
requirements for offshore
structures —
Voting terminates on:
Part 1:
Metocean design and operating
considerations
ICS: 75.180.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland Reference number
ISO/DIS 19901-1:2024(en)
ii
ISO/DIS 19901-1:2024(en)
Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms.10
4.1 Symbols .10
4.2 Abbreviated terms . 12
5 Determining the relevant metocean parameters .12
5.1 General . 12
5.2 Expert development of metocean criteria. 13
5.3 Selecting appropriate parameters for determining design actions and action effects . 13
5.4 The metocean database . 15
5.5 Storm types in a region . 15
5.6 Directionality . 15
5.7 Extrapolation to extreme and abnormal conditions . 15
5.8 Metocean parameters for fatigue assessments .16
5.9 Metocean parameters for short-term activities.17
5.10 Metocean parameters for medium-term activities .18
6 Water depth, tides and storm surges .18
6.1 General .18
6.2 Tides .19
6.3 Storm surges .19
6.4 Extreme water level .19
7 Wind .20
7.1 General . 20
7.2 Wind actions and action effects .21
7.3 Wind profile and time-averaged wind speed . 22
7.4 Wind spectra . 22
8 Waves .22
8.1 General . 22
8.2 Wave actions and action effects . 23
8.3 Sea-states — Spectral waves .24
8.3.1 Wave spectrum .24
8.3.2 Directional spreading .24
8.3.3 Wave periods .24
8.3.4 Wave kinematics — Velocities and accelerations .24
8.4 Regular (periodic) waves . 25
8.4.1 General . 25
8.4.2 Wave period . 25
8.4.3 Wave kinematics — Velocities and accelerations . 25
8.4.4 Intrinsic, apparent and encounter wave periods . 26
8.5 Maximum height of an individual wave for long return periods .27
8.6 Linear and non linear wave models .27
8.7 Wave crest elevation .27
9 Currents.28
9.1 General . 28
9.2 Current velocities . 28
9.3 Current profile . 29
9.4 Current profile stretching . 29
9.5 Current blockage . . 29

iii
ISO/DIS 19901-1:2024(en)
9.6 Tidal Currents .
...