SIST EN ISO 17349:2016

Petroleum and natural gas industries - Offshore platforms handling streams with high content of CO2 at high pressures (ISO 17349:2016)

This International Standard contains provisions for design of topside facilities for offshore plants
handling CO2-rich streams at high pressures; i.e. CO2 molar concentration above 10 %. The surface
systems include usual offshore process unit operations, as shown in Figure 1.
This International Standard is applicable only to topside facilities of fixed and floating oil and gas
production offshore units up to the last barrier, such as an ESDV. Subsea production systems and
Cryogenic CO2 separation are not covered.

Erdöl-, petrochemische und Erdgasindustrie - Dampf mit hohem CO2 Gehalt bei hohen Drücken und hohen Durchflussraten - Richtlinien (ISO 17349:2016)

Industries du pétrole et du gaz naturel - Plates-formes en mer traitant des courants à fort teneur en CO2 à haute pression (ISO 17349:2016)

L'ISO 17349:2016 contient des dispositions relatives à la conception des installations de surface d'installations de production en mer qui traitent des fluides riches en CO2 à haute pression, c'est-à-dire des fluides dont la concentration molaire en CO2 est supérieure à 10 %. Les installations de surface concernent les opérations ordinaires des unités de traitement en mer, comme illustré à la Figure 1.
L'ISO 17349:2016 s'applique uniquement aux installations de surface des unités fixes et flottantes de production de pétrole et de gaz en mer jusqu'au dernier dispositif de sécurité, tel qu'une vanne d'arrêt d'urgence. Les systèmes de production immergés et la séparation cryogénique du CO2 ne sont pas traités.

Industrija za predelavo nafte in zemeljskega plina - Ploščadi na morju z oskrbo s paro z visoko vsebnostjo CO2 pri visokem tlaku (ISO 17349:2016)

Ta mednarodni standard vključuje določila za načrtovanje opreme na palubah naftnih ploščadi, prek katerih teče CO2 pri visokem tlaku, tj. pri molarni koncentraciji CO2, večji od 10 %. Površinski sistemi vključujejo običajne dejavnosti proizvodne enote na ploščadi, kot je prikazano na sliki 1.
Ta mednarodni standard se uporablja samo za opremo na palubi nepremičnih in plavajočih ploščadi za pridobivanje nafte in plina do zadnje pregrade, kot je ESDV. Podmorski proizvodni sistemi in kriogensko ločevanje CO2 niso obravnavani.

General Information

• Status: Published
• Public Enquiry End Date: 29-Dec-2014
• Publication Date: 04-Apr-2016
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 10-Mar-2016
• Due Date: 15-May-2016
• Completion Date: 05-Apr-2016
• Ref Project: EN ISO 17349:2016 - Petroleum and natural gas industries - Offshore platforms handling streams with high content of CO2 at high pressures (ISO 17349:2016)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 17349:2016
01-maj-2016
,QGXVWULMD]DSUHGHODYRQDIWHLQ]HPHOMVNHJDSOLQD3ORãþDGLQDPRUMX]RVNUERV
SDUR]YLVRNRYVHEQRVWMR&2SULYLVRNHPWODNX,62
Petroleum and natural gas industries - Offshore platforms handling streams with high
content of CO2 at high pressures (ISO 17349:2016)
Erdöl-, petrochemische und Erdgasindustrie - Dampf mit hohem CO2 Gehalt bei hohen
Drücken und hohen Durchflussraten - Richtlinien (ISO 17349:2016)
Industries du pétrole et du gaz naturel - Plates-formes en mer traitant des courants à fort
teneur en CO2 à haute pression (ISO 17349:2016)
Ta slovenski standard je istoveten z: EN ISO 17349:2016
ICS:
75.180.10 Oprema za raziskovanje in Exploratory and extraction
odkopavanje equipment
SIST EN ISO 17349:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 17349:2016

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SIST EN ISO 17349:2016


EN ISO 17349
EUROPEAN STANDARD

NORME EUROPÉENNE

March 2016
EUROPÄISCHE NORM
ICS 75.020
English Version

Petroleum and natural gas industries - Offshore platforms
handling streams with high content of CO at high
2
pressures (ISO 17349:2016)
Industries du pétrole et du gaz naturel - Plates-formes Erdöl-, petrochemische und Erdgasindustrie - Dampf
en mer traitant des courants à fort teneur en CO2 à mit hohem CO2 Gehalt bei hohen Drücken und hohen
haute pression (ISO 17349:2016) Durchflussraten - Richtlinien (ISO 17349:2016)
This European Standard was approved by CEN on 10 January 2016.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATIO N

EUROPÄISCHES KOMITEE FÜR NORMUN G

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17349:2016 E
worldwide for CEN national Members.

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SIST EN ISO 17349:2016
EN ISO 17349:2016 (E)
Contents Page
European foreword . 3
2

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SIST EN ISO 17349:2016
EN ISO 17349:2016 (E)
European foreword
This document (EN ISO 17349:2016) 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 September 2016, and conflicting national standards
shall be withdrawn at the latest by September 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] 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, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 17349:2016 has been approved by CEN as EN ISO 17349:2016 without any modification.
3

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SIST EN ISO 17349:2016

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SIST EN ISO 17349:2016
INTERNATIONAL ISO
STANDARD 17349
First edition
2016-02-15
Petroleum and natural gas
industries — Offshore platforms
handling streams with high content of
CO at high pressures
2
Industries du pétrole et du gaz naturel — Plates-formes en mer
traitant des courants à fort teneur en CO à haute pression
2
Reference number
ISO 17349:2016(E)
©
ISO 2016

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SIST EN ISO 17349:2016
ISO 17349:2016(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, 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 2016 – All rights reserved

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SIST EN ISO 17349:2016
ISO 17349:2016(E)

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviated terms . 4
5 Overview of CO -rich streams behaviour . 5
2
5.1 General . 5
5.2 Hydrate formation . 5
5.3 CO solid formation. 6
2
5.4 Flow metering . 6
6 Blow down, depressuring and relieving of plant and equipment .6
7 Flare and vent system configuration . 7
7.1 General . 7
7.2 System selection . 7
7.3 System configuration . 8
7.3.1 Flare . 8
7.3.2 Vent . 9
8 Materials . 9
8.1 Corrosion . 9
8.1.1 General. 9
8.1.2 Internal corrosion control by dehydration. 9
8.1.3 CRAs .10
8.1.4 Internal corrosion protecting chemicals .10
8.1.5 Internal organic coatings .10
8.2 Brittle fracture .10
8.3 Ductile fracture .10
8.4 Lubricants .10
8.5 Non-metallic seals for CO service .11
2
9 Safety .11
9.1 General .11
9.2 Impacts of the loss of containment of CO -rich streams .11
2
9.2.1 General.11
9.2.2 Respiratory physiological parameters .12
9.2.3 Low temperature impact .12
9.2.4 CO -rich stream BLEVE .12
2
9.3 Hazard identification and risk assessment and management .12
9.3.1 General.12
9.3.2 Hazard identification.13
9.3.3 Risk assessment and management .13
9.4 Consequence analysis .14
9.4.1 General.14
9.4.2 CO dispersion .14
2
9.4.3 Effects of cold CO jet .14
2
9.5 CO detection .14
2
9.6 Strategies.15
Annex A (informative) Evaluation of EOS for CO -rich streams .16
2
Annex B (informative) Hydrate formation .22
Annex C (informative) Water content specification .26
© ISO 2016 – All rights reserved iii

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Annex D (informative) Depressuring of CO -rich streams .33
2
Annex E (informative) Configuration of flare and vent systems .37
Annex F (informative) Boiling liquid expanding vapour explosion (BLEVE) .40
Annex G (informative) Methodology for evaluation of running ductile fracture .42
Annex H (informative) Non-metallic materials for use in CO service .44
2
Annex I (informative) CO toxicology information .45
2
Bibliography .48
iv © ISO 2016 – All rights reserved

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SIST EN ISO 17349:2016
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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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT), see the following URL: Foreword — Supplementary information.
The committee responsible for this document is ISO/TC 67, Materials, equipment and offshore structures
for petroleum, petrochemical and natural gas industries.
© ISO 2016 – All rights reserved v

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SIST EN ISO 17349:2016
ISO 17349:2016(E)

Introduction
In recent years, the oil industry has been facing challenges in developing and operating high-CO
2
content offshore fields. The CO -rich streams, separated from the produced natural gas, can be injected
2
to enhance oil recovery from the reservoirs. Even in cases where the oil recovery increase is not so
significant, operators have to consider the CO -rich stream compression and injection, in order to avoid
2
its venting to the atmosphere.
Main concerns comprise surface safety system and material selection areas, which lack specific
standards and regulations for this scenario. The commercial tools available, for instance, to model the
dispersion of gases, need to be validated for CO and CO /hydrocarbon mixtures, which have distinctive
2 2
thermodynamic behaviour. This will affect the choice of materials and plant design.
This International Standard addresses concepts and criteria for processing CO -rich streams, as a
2
supplement to existing standards for offshore installations.
vi © ISO 2016 – All rights reserved

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SIST EN ISO 17349:2016
INTERNATIONAL STANDARD ISO 17349:2016(E)
Petroleum and natural gas industries — Offshore
platforms handling streams with high content of CO at
2
high pressures
1 Scope
This International Standard contains provisions for design of topside facilities for offshore plants
handling CO -rich streams at high pressures; i.e. CO molar concentration above 10 %. The surface
2 2
systems include usual offshore process unit operations, as shown in Figure 1.
This International Standard is applicable only to topside facilities of fixed and floating oil and gas
production offshore units up to the last barrier, such as an ESDV. Subsea production systems and
Cryogenic CO separation are not covered.
2
NOTE This example is within the scope of this International Standard.
Figure 1 — Example of a Process Flow Diagram (in grey zone)
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 13702, Petroleum and natural gas industries — Control and mitigation of fires and explosions on
offshore production installations — Requirements and guidelines
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SIST EN ISO 17349:2016
ISO 17349:2016(E)

ISO 15156 (all parts), Petroleum and natural gas industries — Materials for use in H S-containing
2
environments in oil and gas production
ISO 21457, Petroleum, petrochemical and natural gas industries — Materials selection and corrosion
control for oil and gas production systems
ISO 23936-1, Petroleum, petrochemical and natural gas industries — Non-metallic materials in contact
with media related to oil and gas production — Part 1: Thermoplastics
ISO 23936-2:2011, Petroleum, petrochemical and natural gas industries — Non-metallic materials in
contact with media related to oil and gas production — Part 2: Elastomers
API STD 521, Pressure-relieving and Depressuring Systems, API Standard, January 2014
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
compressibility factor
Z
thermodynamic property for modifying the ideal gas law to account for the real gas behaviour
3.2
corrosion resistant alloy
CRA
alloy intended to be resistant to general and localized corrosion by oil field environments that are
corrosive to carbon steels
[SOURCE: ISO 15156-1:2015, 3.6]
3.3
dense phase
fluid state (supercritical or liquid) above critical pressure
3.4
equation of state
EOS
thermodynamic equation describing the state of matter under a given set of physical conditions
3.5
free water
water not dissolved in the CO -rich stream
2
Note 1 to entry: This can be pure water, water with dissolved salts, water wet salts, water glycol mixtures or
other mixtures containing water.
3.6
gas-assisted flare
flare with gas assistance system in order to increase gas net heating value
3.7
high-velocity tip flare
flare with gas exit velocities higher than 122 m/s
3.8
high-velocity vent
vent with gas exit velocities higher than 150 m/s
2 © ISO 2016 – All rights reserved

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SIST EN ISO 17349:2016
ISO 17349:2016(E)

3.9
hydrate
solid, crystalline compound of water and light hydrocarbons or CO , in which the water molecules
2
combine with the gas molecules to form a solid
3.10
CRA clad
metallic coating of CRA in which the bond between the parent metal and liner is metallurgical
3.11
low-velocity tip flare
flare with gas exit velocities lower than 122 m/s
3.12
low-velocity vent
vent with gas exit velocities lower than 150 m/s
3.13
minimum design temperature
minimum temperature below which the application limits for the materials involved are exceeded
3.14
platform
complete assembly, including structure, topsides, foundations and stationkeeping systems
[SOURCE: ISO 19900:2013, 3.35]
3.15
rapid gas decompression
RGD
depressurization
explosive decompression
rapid pressure-drop in a high pressure gas-containing system which disrupts the equilibrium between
external gas pressure and the concentration of gas dissolved inside any polymer, with the result that
excess gas tries to escape from the solution at points throughout the material, causing expansion
[SOURCE: ISO 23936-2:2011, 3.1.10]
3.16
supercritical phase
fluid state above critical pressure and temperature
3.17
topsides
structures and equipment placed on a supporting structure (fixed or floating) to provide some or all of
a platform’s functions
Note 1 to entry: For a ship-shaped floating structure, the deck is not part of the topsides.
Note 2 to entry: For a jack-up, the hull is not part of the topsides.
Note 3 to entry: A separate fabricated deck or module support frame is part of the topsides.
[SOURCE: ISO 19900:2013, 3.52]
3.18
triple point
temperature and pressure where CO exists as a gas, liquid and solid simultaneously
2
© ISO 2016 – All rights reserved 3

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ISO 17349:2016(E)

4 Abbreviated terms
AIV acoustically induced vibration
BLEVE boiling liquid expanding vapour explosion
BDV blow down valve
CH methane
4
CO carbon dioxide
2
CCR central control room
CRA corrosion resistant alloy
EERS evacuation, escape and rescue strategy
EOS equation of state
ESD emergency shut down
FES fire and explosion strategy
GDU gas dehydration unit
H S hydrogen sulfide
2
HC hydrocarbon
HP high pressure
HSE health, safety and environment
IDLH immediately dangerous to life or health
LP low pressure
MMSCF million standard cubic feet gas (60 °F and 1 atm)
NHV net heating value
NIOSH National Institute for Occupational Safety and Health
NIST National Institute of Standards and Technology
OSHA Occupational Safety and Health Administration
Pa ambient pressure
Pc critical pressure
PEL permissible exposure limit
PHA Preliminary Hazard Analysis
ppmv parts per million, volumetric basis
PR Peng-Robinson EOS
PR-HV Peng-Robinson EOS modified by using mixing rule of Huron-Vidal and Peneloux factor
4 © ISO 2016 – All rights reserved

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SIST EN ISO 17349:2016
ISO 17349:2016(E)

PR-SV Peng-Robinson-Stryjek-Vera EOS
PSV pressure safety valve
RGD rapid gas decompression
RO restriction orifice
SCF standard cubic feet
SVLE solid-liquid-vapour equilibrium
STEL short-term exposure limit
SRK Soave-Redlich-Kwong EOS
Tc critical temperature
TWA time weighted average
v maximum permitted velocity, expressed in m/s
max
Z compressibility factor
5 Overview of CO -rich streams behaviour
2
5.1 General
In an offshore plant design, CO -rich streams can be handled close to or above its critical pressure (dense
2
[8]
phase) or above its critical pressure and temperature (supercritical phase). In the latter, some of its
properties are similar to that of a liquid (e.g. density) and other similar to that of a gas (e.g. viscosity).
The physical and thermodynamic properties of the CO -rich streams will have an impact on issues like
2
hydrate formation and depressuring.
The design of a plant handling CO -rich streams at high pressures should be conducted using an
2
EOS supported by experimental data in the range of operations. Examples of this approach are shown
in Annex A. If experimental data are not available, data from thermodynamic based models, including
readily available EOS, should be used taking into account any related uncertainties therefore allowing
for sufficient safety margins.
Particular attention should be given when performing simulations near the critical point due to strong
variation on stream properties and uncertainty on the description of the existing phases. For that
reason, equipment normal operation envelope should avoid critical point region.
5.2 Hydrate formation
CO -rich streams can present a potential risk for hydrate formation similar to sweet natural gas, if
2
water is present (as free water or in gas phase).
For high pressures, CO has an inhibitor effect on hydrate formation, since an increase on the
2
CO concentration shifts the hydrate equilibrium curve towards low temperatures, as it can be
2
seen in Annex B.
Dehydration unit design should take into account all operational conditions, including low temperatures
that might occur in process systems and pipeline segments downstream from the offshore plant. Special
attention should be given to the fact that CO tends to increase water-holding capacity at higher pressures.
2
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SIST EN ISO 17349:2016
ISO 17349:2016(E)

For that reason, depending on CO content in the stream, it is not safe to set a water dew point
2
specification based on higher pressure requirements only, since water condensation can occur at lower
pressures (see Figure B.1).
As a first approach, a margin of 10 °C on water dew point or a reduction down to 50 % of the water
saturation content should be considered.
An example of moisture content specification for Dehydration Unit is presented in Annex C.
5.3 CO solid formation
2
Solid formation can be observed in a CO -rich stream depending on temperature and pressure. Low
2
temperatures that lead to solid formation can be achieved
...