SIST EN ISO 19901-9:2019

Petroleum and natural gas industries - Specific requirements for offshore structures - Part 9: Structural integrity management (ISO 19901-9:2019)

This part of ISO 19901 specifies the SIM process engineering requirements and recommendations to be used by an owner for demonstrating the structural fitness-for-service of existing platforms operating offshore. This part of ISO 19901 addresses the platform life-cycle from concept through to decommissioning and/or possible reuse at a different location and is applicable to:
 substructure structural components on compliant bottom founded structures, including fixed platforms, compliant towers, manifolds and structures used offshore as part of an alternative energy concept;
 topsides structural components irrespective of the structural form, including floating facilities and jack-ups.

Erdöl- und Erdgasindustrie - Spezielle Anforderungen für Offshore-Anlagen - Teil 9: Integritätsmanagement für Konstruktionen (ISO 19901-9:2019)

Industries du pétrole et du gaz naturel - Exigences spécifiques relatives aux structures en mer - Partie 9: Gestion de l'intégrité structurelle (ISO 19901-9:2019)

Le présent document spécifie les principes régissant la gestion de l'intégrité structurelle (SIM) des structures en mer soumises à des types d'actions connus ou prévisibles.
Il spécifie des exigences et fournit des recommandations applicables aux types suivants de structures en mer fixes en acier pour les industries du pétrole et du gaz naturel:
—          caissons, autoportants et ancrés;
—          jaquettes;
—          tours mono;
—          tours.
Le présent document est applicable à la superstructure, y compris, mais sans s'y limiter, les ponts principaux, les jambes de pont, les modules de la superstructure, les socles de grue, le pont hélicoptère, le derrick de forage, les poutres de ripage, les supports de torche, les tours d'évacuation, la tour radio, les ossatures de guidage des tubes conducteurs et les bossoirs des canots de sauvetage. En outre, il est applicable à des structures élastiques prenant appui sur le fond marin, à des structures en acier posées par gravité, à des plates-formes auto-élévatrices, à d'autres structures prenant appui sur le fond marin et à d'autres structures associées aux structures en mer conformes (telles que des citernes sous-marines de stockage de pétrole, des ponts et des structures de connexion) dans la mesure où ses exigences se rapportent à celles-ci.
Le présent document contient des exigences pour la planification et l'ingénierie des tâches suivantes:
a)    les exigences relatives à la gestion de l'intégrité;
b)    l'inspection en service et la gestion de l'intégrité à la fois des nouvelles structures et des structures existantes;
c)    l'évaluation de structures existantes;
d)    l'évaluation de structures en vue d'une réutilisation en des lieux différents;
e)    l'évaluation de structures en vue de leur enlèvement futur.

Industrija za predelavo nafte in zemeljskega plina - Posebne zahteve za naftne ploščadi - 9. del: Celovitost storitev upravljanja (ISO 19901-9:2019)

Ta del standarda ISO 19901 določa inženirske zahteve in priporočila glede procesa celovitosti storitev upravljanja (SIM), ki jih uporablja lastnik za prikaz strukturne ustreznosti za obratovanje obstoječih vrtalnih ploščadi. Ta del standarda ISO 19901 obravnava življenjski cikel ploščadi od koncepta do izločitve iz uporabe in/ali morebitne ponovne uporabe na drugi lokaciji ter se uporablja za:
-   strukturne komponente podstrukture na skladnih na dno pritrjenih naftnih ploščadih, vključno s fiksnimi ploščadmi, skladnimi stolpi, razdelilniki in strukturami, ki se uporabljajo kot del alternativnega energetskega koncepta;
-   strukturne komponente na palubi, ne glede na strukturno obliko, vključno s plavajočimi objekti in dvižnimi ploščadmi.

General Information

• Status: Published
• Public Enquiry End Date: 18-Jul-2017
• Publication Date: 22-Sep-2019
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 19-Sep-2019
• Due Date: 24-Nov-2019
• Completion Date: 23-Sep-2019
• Ref Project: EN ISO 19901-9:2019 - Petroleum and natural gas industries - Specific requirements for offshore structures - Part 9: Structural integrity management (ISO 19901-9:2019)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 19901-9:2019
01-november-2019
Industrija za predelavo nafte in zemeljskega plina - Posebne zahteve za naftne
ploščadi - 9. del: Celovitost storitev upravljanja (ISO 19901-9:2019)
Petroleum and natural gas industries - Specific requirements for offshore structures -
Part 9: Structural integrity management (ISO 19901-9:2019)
Erdöl- und Erdgasindustrie - Spezielle Anforderungen für Offshore-Anlagen - Teil 9:
Integritätsmanagement für Konstruktionen (ISO 19901-9:2019)
Industries du pétrole et du gaz naturel - Exigences spécifiques relatives aux structures
en mer - Partie 9: Gestion de l'intégrité structurelle (ISO 19901-9:2019)
Ta slovenski standard je istoveten z: EN ISO 19901-9:2019
ICS:
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
SIST EN ISO 19901-9:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 19901-9:2019

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SIST EN ISO 19901-9:2019


EN ISO 19901-9
EUROPEAN STANDARD

NORME EUROPÉENNE

September 2019
EUROPÄISCHE NORM
ICS 75.180.10
English Version

Petroleum and natural gas industries - Specific
requirements for offshore structures - Part 9: Structural
integrity management (ISO 19901-9:2019)
Industries du pétrole et du gaz naturel - Exigences Erdöl- und Erdgasindustrie - Spezielle Anforderungen
spécifiques relatives aux structures en mer - Partie 9: für Offshore-Anlagen - Teil 9: Integritätsmanagement
Gestion de l'intégrité structurelle (ISO 19901-9:2019) für Konstruktionen (ISO 19901-9:2019)
This European Standard was approved by CEN on 8 June 2019.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19901-9:2019 E
worldwide for CEN national Members.

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SIST EN ISO 19901-9:2019
EN ISO 19901-9:2019 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 19901-9:2019
EN ISO 19901-9:2019 (E)
European foreword
This document (EN ISO 19901-9:2019) has been prepared by Technical Committee ISO/TC 67
"Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries"
in collaboration with Technical Committee CEN/TC 12 “Materials, equipment and offshore structures
for petroleum, petrochemical and natural gas industries” the secretariat of which is held by NEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2020, and conflicting national standards shall
be withdrawn at the latest by March 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 19901-9:2019 has been approved by CEN as EN ISO 19901-9:2019 without any
modification.

3

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SIST EN ISO 19901-9:2019

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SIST EN ISO 19901-9:2019
INTERNATIONAL ISO
STANDARD 19901-9
First edition
2019-07
Petroleum and natural gas
industries — Specific requirements
for offshore structures —
Part 9:
Structural integrity management
Industries du pétrole et du gaz naturel — Exigences spécifiques
relatives aux structures en mer —
Partie 9: Gestion de l'intégrité structurelle
Reference number
ISO 19901-9:2019(E)
©
ISO 2019

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SIST EN ISO 19901-9:2019
ISO 19901-9:2019(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

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SIST EN ISO 19901-9:2019
ISO 19901-9:2019(E)

Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3  Terms and definitions . 2
4 Symbols . 4
5 Abbreviated terms . 5
6 SIM fundamentals . 6
6.1 General . 6
6.2 Limit states and performance levels . 6
6.3 Fitness-for-service assessment . 6
6.4 Management framework . 7
6.5 Design . 8
6.6 Topsides . 9
6.7 Continued service . 9
6.8 Structural integrity interfaces. 9
7 SIM process . 9
8 SIM data.10
8.1 General .10
8.2 Missing data .11
8.3 Data management .11
9 SIM evaluation .12
9.1 General .12
9.2 Data evaluation .12
9.3 Hazards, hazardous events and degradation mechanisms .12
9.4 Critical structure (CS) .12
9.5 Risk .12
9.5.1 General.12
9.5.2 Consequence . . .13
9.5.3 Likelihood .13
9.5.4 Risk presentation .13
9.6 Demonstrating fitness-for-service .13
9.7 Assessment .14
9.7.1 General.14
9.7.2 Assessment motive .14
9.7.3 Assessment initiators .15
9.8 Mitigation measures .15
9.8.1 General.15
9.8.2 Consequence reduction .16
9.8.3 Likelihood reduction .16
10 SIM strategy .16
10.1 General .16
10.2 Inspection strategy .17
10.2.1 General.17
10.2.2 Inspection motives .18
10.2.3 Inspection type .18
10.2.4 Inspection method .18
10.2.5 Inspection interval .18
10.2.6 Inspection scope .20
10.2.7 Pre-selected inspection areas .20
© ISO 2019 – All rights reserved iii

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SIST EN ISO 19901-9:2019
ISO 19901-9:2019(E)

10.3 Maintenance strategy .21
10.4 Monitoring strategy .21
10.4.1 General.21
10.4.2 Weight and centre of gravity (CoG) monitoring .22
10.4.3 Deck elevation monitoring .22
10.4.4 Natural frequency monitoring .22
10.4.5 Corrosion protection monitoring .22
10.4.6 Metocean monitoring . .22
10.5 Evacuation strategy .22
10.6 Marine site investigations .23
11 SIM Program .23
11.1 General .23
11.2 Inspection program.23
11.2.1 General.23
11.2.2 Specifications .23
11.2.3 Inspection method .24
11.3 Maintenance program .25
11.4 Monitoring program .25
12 Assessment .26
12.1 General .26
12.2 Assessment information .26
12.3 Assessment method .26
12.3.1 General.26
12.3.2 Qualitative method . .27
12.3.3 Semi-quantitative method .28
12.3.4 Quantitative methods .29
12.3.5 Fatigue analysis .31
12.4 Assessment model .31
12.4.1 General.31
12.4.2 Tubular members .31
12.4.3 Connections .32
12.4.4 Conductors .32
12.4.5 Damage .32
12.4.6 Repaired and strengthened elements .33
12.4.7 Foundation model .33
12.4.8 Material strength .34
12.5 Assessment for gravity hazard .34
12.5.1 General.34
12.5.2 Design level method (DLM) .35
12.5.3 Ultimate strength method (USM) .35
12.6 Assessment for metocean hazard .35
12.6.1 General.35
12.6.2 Metocean criteria . . .35
12.6.3 Crest elevation .35
12.6.4 Metocean action combinations — Jacket .36
12.6.5 Metocean action combinations — Deck .36
12.6.6 Directionality of metocean hazards .36
12.6.7 Design level method (DLM) .37
12.6.8 Linear-elastic redundancy method .37
12.6.9 Ultimate strength method (USM) .37
12.7 Assessment for seismic hazard .38
12.7.1 General.38
12.7.2 Seismic criteria .38
12.7.3 Seismic action combinations .38
12.7.4 Directionality of seismic hazards .39
12.7.5 Design level method (DLM) .39
12.7.6 Ultimate strength method (USM) .40
iv © ISO 2019 – All rights reserved

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SIST EN ISO 19901-9:2019
ISO 19901-9:2019(E)

12.8 Assessment for collision hazard .40
12.8.1 General.40
12.8.2 Collision zone .41
12.8.3 Collision criteria .41
12.8.4 Directionality of collision hazards .41
12.8.5 Collision assessment method.41
12.9 Assessment for ice hazard .41
12.10 Assessment for explosion hazard .42
12.11 Assessment for fire hazard .42
13 Reuse .42
13.1 General .42
13.2 Fatigue in reused structures .42
13.3 Steel in reused structures .42
13.4 Inspection of reused structures .43
13.4.1 General.43
13.4.2 Initial con
...

SLOVENSKI STANDARD
oSIST prEN ISO 19901-9:2017
01-julij-2017
,QGXVWULMD]DSUHGHODYRQDIWHLQ]HPHOMVNHJDSOLQD3RVHEQH]DKWHYH]DQDIWQH
SORãþDGLGHO&HORYLWRVWVWRULWHYXSUDYOMDQMD,62',6
Petroleum and natural gas industries - Specific requirements for offshore structures -
Part 9: Structural integrity management (ISO/DIS 19901-9:2017)
Erdöl- und Erdgasindustrie - Spezielle Anforderungen für Offshore-Anlagen - Teil 9:
Integritätsmanagement für Konstruktionen (ISO/DIS 19901-9:2017)
Industries du pétrole et du gaz naturel - Exigences spécifiques relatives aux structures
en mer - Partie 9: Gestion de l'intégrité structurelle (ISO/DIS 19901-9:2017)
Ta slovenski standard je istoveten z: prEN ISO 19901-9
ICS:
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
oSIST prEN ISO 19901-9:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 19901-9:2017

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oSIST prEN ISO 19901-9:2017
DRAFT INTERNATIONAL STANDARD
ISO/DIS 19901-9
ISO/TC 67/SC 7 Secretariat: BSI
Voting begins on: Voting terminates on:
2017-04-26 2017-07-18
Petroleum and natural gas industries — Specific
requirements for offshore structures —
Part 9:
Structural integrity management
Industries du pétrole et du gaz naturel — Exigences spécifiques relatives aux structures en mer —
Partie 9: Gestion de l’intégrité structurelle
ICS: 75.180.10
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 19901-9:2017(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2017

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oSIST prEN ISO 19901-9:2017
ISO/DIS 19901-9:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2017 – All rights reserved

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oSIST prEN ISO 19901-9:2017
ISO/DIS 19901-9:2017(E)
Contents
Foreword . vii
Introduction . ix
1 Scope.10
2 Normative references .10
3 Terms and definitions.11
4 Symbols .14
5 Abbreviated terms.16
6 SIM fundamentals .18
6.1 General .18
6.2 Fitness-for-service assessment .19
6.3 Management framework .19
6.4 Performance level.20
6.5 Design .20
6.6 Topsides .21
6.7 Continued service.21
6.8 Structural integrity interfaces .21
7 SIM process.22
8 Data .22
8.1 General .22
8.2 Design data .23
8.3 Fabrication and installation data.23
8.4 Condition data .23
8.5 Operational data .23
8.6 Engineering data .23
8.7 Missing data.24
8.8 Data management.24
9 Evaluation .25
9.1 General .25
9.2 Factors .25
9.3 Hazards .26
9.4 Critical structure (CS) .26
9.5 Risk .27
9.5.1 General. 27
9.5.2 Consequence of failure . 27
9.5.3 Likelihood of failure. 29
9.5.4 Risk presentation . 30
9.6 Performance level.31
9.6.1 General. 31
9.6.2 Life-safety. 32
9.6.3 Pollution of the environment . 32
9.6.4 Financial loss. 32
9.7 Fatigue.32
9.8 Assessment .33
© ISO 2017 – All rights reserved iii

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oSIST prEN ISO 19901-9:2017
ISO/DIS 19901-9:2017(E)
9.8.1 General. 33
9.8.2 Assessment motive . 33
9.8.3 Assessment initiators . 34
9.9 Mitigation measures .36
9.9.1 General. 36
9.9.2 Consequence reduction . 36
9.9.3 Likelihood reduction. 37
10 Strategy.39
10.1 General .39
10.2 Inspection strategy .40
10.2.1 General. 40
10.2.2 Inspection motives . 40
10.2.3 Inspection type . 41
10.2.4 Inspection method. 42
10.2.5 Inspection interval . 44
10.2.6 Inspection scope . 48
10.2.7 Pre-selected inspection areas . 51
10.3 Maintenance strategy.51
10.4 Monitoring strategy .51
10.4.1 General. 51
10.4.2 Weight monitoring . 52
10.4.3 Deck elevation monitoring . 52
10.4.4 Natural frequency monitoring. 52
10.4.5 Corrosion protection monitoring . 53
10.4.6 Metocean monitoring . 53
10.5 Evacuation strategy .53
10.6 Geotechnical investigation .53
11 Program .54
11.1 General .54
11.2 Inspection program .54
11.2.1 General. 54
11.2.2 Specifications . 54
11.2.3 Inspection method. 55
11.3 Maintenance program .57
11.4 Monitoring program .57
12 Assessment requirements .57
12.1 General .57
12.2 Assessment information .58
12.2.1 General. 58
12.2.2 Information requirements. 58
12.2.3 Limited or missing information. 58
12.2.4 Above water information. 59
12.2.5 Underwater information . 59
12.2.6 Geotechnical information. 59
12.3 Assessment method .59
12.3.1 General. 59
12.3.2 Semi-quantitative methods . 60
12.3.3 Quantitative methods . 61
12.3.4 Fatigue analysis . 63
iv © ISO 2017 – All rights reserved

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oSIST prEN ISO 19901-9:2017
ISO/DIS 19901-9:2017(E)
12.4 Assessment model .63
12.4.1 General. 63
12.4.2 Tubular members . 63
12.4.3 Connections . 64
12.4.4 Conductors . 64
12.4.5 Damage . 64
12.4.6 Repaired and strengthened elements . 65
12.4.7 Foundation model . 65
12.4.8 Material strength . 66
12.5 Assessment for gravity hazard .66
12.5.1 General. 66
12.5.2 Design level method (DLM) . 66
12.5.3 Ultimate strength method (USM). 67
12.6 Assessment for metocean hazard .67
12.6.1 General. 67
12.6.2 Metocean criteria. 67
12.6.3 Crest elevation . 67
12.6.4 Metocean action vector - jacket . 68
12.6.5 Metocean action vector - deck. 68
12.6.6 Directionality of metocean hazards. 68
12.6.7 Design level method (DLM) . 69
12.6.8 Linear-elastic redundancy method . 69
12.6.9 Ultimate strength method (USM). 69
12.7 Assessment for seismic hazard .70
12.7.1 General. 70
12.7.2 Seismic criteria . 70
12.7.3 Seismic action vector . 70
12.7.4 Directionality of seismic hazards. 71
12.7.5 Design level method (DLM) . 71
12.7.6 Ultimate strength method (USM). 71
12.8 Assessment for collision hazard.72
12.8.1 General. 72
12.8.2 Collision zone . 73
12.8.3 Collision criteria . 73
12.8.4 Directionality of collision hazards. 73
12.8.5 Collision assessment method . 73
12.9 Assessment for ice hazard .74
12.10 Assessment for explosion hazard .74
12.11 Assessment for fire hazard .74
13 Reuse.74
13.1 General .74
13.2 Fatigue in reused structures.74
13.3 Steel in reused structures .74
13.4 Inspection of reused structures .75
13.4.1 General. 75
13.4.2 Initial condition assessment of structural members and connections . 75
13.4.3 Extent of weld inspection. 75
13.4.4 Corrosion protection systems . 76
13.5 Removal and reinstallation .76
© ISO 2017 – All rights reserved v

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oSIST prEN ISO 19901-9:2017
ISO/DIS 19901-9:2017(E)
14 Decommissioning .76
14.1 General .76
14.2 Decommissioning process .76
14.3 Pre-decommissioning data gathering.76
14.4 Planning and engineering .77
14.5 Well decommissioning .77
14.6 Facilities decommissioning .77
14.7 Pipeline decommissioning .77
14.8 Conductor removal .77
14.9 Structure decommissioning .77
14.10 Site clearance .78
Annex A (informative) Additional information and guidance .79
A.1 Scope .79
A.2 Normative references.80
A.3 Terms and definitions .80
A.4 Symbols.80
A.5 Abbreviated terms .80
A.6 SIM fundamentals .80
A.7 SIM process .90
A.8 Data .91
A.9 Evaluation .95
A.10 Strategy . 119
A.11 Program . 137
A.12 Assessment requirements. 140
A.13 Reuse . 164
A.14 Decommissioning. 167


vi © ISO 2017 – All rights reserved

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oSIST prEN ISO 19901-9:2017
ISO/DIS 19901-9:2017(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 19901-9 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures
for petroleum, petrochemical and natural gas industries, Subcommittee SC 7, Offshore structures.
This second/third/. edition cancels and replaces the first/second/. edition (), [clause(s) / subclause(s) /
table(s) / figure(s) / annex(es)] of which [has / have] been technically revised.
ISO 19901 consists of the following parts, under the general title Petroleum and natural gas industries —
Specific requirements for offshore structures:
 Part 9: Structural integrity management
 Part [n]:
 Part [n+1]:

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
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oSIST prEN ISO 19901-9:2017
ISO/DIS 19901-9:2017(E)
The committee responsible for this document is Technical Committee ISO/TC 67, Materials, equipment and
offshore structures for petroleum, petrochemical and natu
...