EN ISO 15156-1:2001

SLOVENSKI STANDARD
SIST EN ISO 15156-1:2004
01-maj-2004
Petroleum and natural gas industries - Materials for use in H2S-containing
environments in oil and gas production - Part 1: General principles for selection of
cracking-resistant materials (ISO 15156-1:2001)
Petroleum and natural gas industries - Materials for use in H2S-containing environments
in oil and gas production - Part 1: General principles for selection of cracking-resistant
materials (ISO 15156-1:2001)
Erdöl- und Erdgasindustrie - Werkstoffe für den Einsatz in H2S-haltiger Umgebung bei
der Öl- und Gasgewinnung - Teil 1: Allgemeine Grundlagen für die Auswahl von gegen
Rissbildung beständigen Werkstoffen (ISO 15156-1:2001)
Industries du pétrole et du gaz naturel - Matériaux pour utilisation en présence de H2S
dans la production de pétrole et de gaz naturel - Partie 1: Principes généraux pour le
choix des matériaux résistant au craquage (ISO 15156-1:2001)
Ta slovenski standard je istoveten z: EN ISO 15156-1:2001
ICS:
75.180.10 Oprema za raziskovanje in Exploratory and extraction
odkopavanje equipment
77.060 Korozija kovin Corrosion of metals
SIST EN ISO 15156-1:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 15156-1:2004

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SIST EN ISO 15156-1:2004
EUROPEAN STANDARD
EN ISO 15156-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2001
ICS 75.180.01
English version
Petroleum and natural gas industries - Materials for use in H S-
2
containing environments in oil and gas production - Part 1:
General principles for selection of cracking-resistant materials
(ISO 15156-1:2001)
Industries du pétrole et du gaz naturel - Matériaux pour Erdöl- und Erdgasindustrie - Werkstoffe für den Einsatz in
utilisation en présence de H S dans la production de H S-haltiger Umgebung bei der Öl- und Gasgewinnung -
2 2
pétrole et de gaz naturel - Partie 1: Principes généraux Teil 1: Allgemeine Grundlagen für die Auswahl von gegen
pour le choix des matériaux résistant au craquage (ISO Rissbildung beständigen Werkstoffen (ISO 15156-1:2001)
15156-1:2001)
This European Standard was approved by CEN on 15 December 2001.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15156-1:2001 E
worldwide for CEN national Members.

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SIST EN ISO 15156-1:2004
EN ISO 15156-1:2001 (E)
CORRECTED  2003-02-05
Foreword
This document (ISO 15156-1:2001) has been prepared by Technical Committee ISO/TC 67
"Materials, equipment and offshore structures for petroleum and natural gas industries" in
collaboration with Technical Committee CEN/TC 12 "Materials, equipment and offshore
structures for petroleum and natural gas industries", the secretariat of which is held by
AFNOR.
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 June 2002, and conflicting national
standards shall be withdrawn at the latest by June 2002.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United
Kingdom.
Endorsement notice
The text of ISO 15156-1:2001 has been approved by CEN as EN ISO 15156-1:2001 without
any modifications.
2

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SIST EN ISO 15156-1:2004
INTERNATIONAL ISO
STANDARD 15156-1
First edition
2001-12-15
Petroleum and natural gas industries —
Materials for use in H S-containing
2
environments in oil and gas production —
Part 1:
General principles for selection of cracking-
resistant materials
Industries du pétrole et du gaz naturel — Matériaux pour utilisation en
présence de H S dans la production de pétrole et de gaz naturel —
2
Partie 1: Principes généraux pour le choix des matériaux résistant au
craquage

Reference number
ISO 15156-1:2001(E)
©
ISO 2001

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SIST EN ISO 15156-1:2004
ISO 15156-1:2001(E)
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©
ii ISO 2001 – All rights reserved

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SIST EN ISO 15156-1:2004
ISO 15156-1:2001(E)
Contents Page
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 3
4 Abbreviated terms . 5
5 General principles . 6
6 Evaluation and definition of service conditions to enable material selection . 6
7 Selection of pre-qualified materials resistant to SSC/SCC in the presence of sulfides . 7
8 Qualification of materials for H S service . 7
2
9 Report of the method of selection or qualification . 8
Bibliography. 10
©
ISO 2001 – All rights reserved iii

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SIST EN ISO 15156-1:2004
ISO 15156-1:2001(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 3.
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 part of ISO 15156 may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 15156-1 was prepared by Technical Committee ISO/TC 67, Materials, equipment and
offshore structures for petroleum and natural gas industries.
ISO 15156 consists of the following parts, under the general title Petroleum and natural gas industries — Materials
for use in H S-containing environments in oil and gas production:
2
— Part 1: General principles for selection of cracking-resistant materials
— Part 2: Cracking-resistant carbon and low alloy steels
— Part 3: Cracking-resistant CRAs (corrosion-resistant alloys) and other alloys
©
iv ISO 2001 – All rights reserved

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SIST EN ISO 15156-1:2004
ISO 15156-1:2001(E)
Introduction
The consequences of sudden failures of metallic components used in the oil and gas field, and associated with their
exposure to H S-containing production fluids, led to the preparation of the first edition of NACE MR 0175. This
2
standard was published in 1975 by the National Association of Corrosion Engineers, now known as NACE
International.
The original and subsequent editions of NACE MR 0175 established limits of H S partial pressure above which
2
precautions against sulfide stress cracking (SSC) were always considered necessary. They also provided guidance
for the selection and specification of SSC-resistant materials when the H S thresholds were exceeded. In more
2
recent editions, NACE MR 0175 has also provided application limits for some corrosion-resistant alloys, in terms of
environmental composition and pH, temperature and H S partial pressures. NACE MR 0175 is complemented by
2
NACE TM 0177 and NACE M 284.
In separate developments, the European Federation of Corrosion issued EFCPublication16 in 1995 and
EFC Publication 17 in 1996. These documents are generally complementary to those of NACE though they differ in
scope and detail.
With the cooperation of NACE and EFC, ISO/TC 67 formed Working Group 7 to prepare ISO 15156. The Working
Group are to promote the collection, review and, where appropriate, publication of field experience and laboratory
test data related to the cracking resistance of metallic materials in H S-containing environments.
2
This part of ISO 15156 utilises the above sources to provide requirements and recommendations for materials
qualification and selection for safe application in environments containing wet H S in oil and gas production systems.
2
©
ISO 2001 – All rights reserved v

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SIST EN ISO 15156-1:2004

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SIST EN ISO 15156-1:2004
INTERNATIONAL STANDARD ISO 15156-1:2001(E)
Petroleum and natural gas industries — Materials for use in
H S-containing environments in oil and gas production —
2
Part 1:
General principles for selection of cracking-resistant materials
1 Scope
This part of ISO 15156 describes general principles and gives requirements and recommendations for the selection
and qualification of metallic materials for service in equipment used in oil and gas production and in natural gas
sweetening plants in H S-containing environments, where the failure of such equipment could pose a risk to the
2
health and safety of the public and personnel or to the environment. It can be applied to help to avoid costly corrosion
damage to the equipment itself. It supplements, but does not replace, the material requirements given in the
appropriate design codes, standards or regulations.
This part of ISO 15156 addresses all mechanisms of cracking that can be caused by H S, including sulfide stress
2
cracking, stress corrosion cracking, hydrogen-induced cracking and stepwise cracking, stress-oriented hydrogen-
induced cracking, soft zone cracking and galvanically induced hydrogen stress cracking.
Table 1 provides a non-exhaustive list of equipment to which this part of ISO 15156 is applicable, including permitted
exclusions.
This part of ISO 15156 applies to the qualification and selection of materials for equipment designed and constructed
using conventional elastic design criteria.
This part of ISO 15156 is not necessarily applicable to equipment used in refining or downstream processes and
equipment.
CAUTION — Metallic materials selected or qualified using ISO 15156 are resistant to cracking in defined
H S-containing environments in oil and gas production, but are not necessarily immune under all service
2
conditions.
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ISO 2001 – All rights reserved 1

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SIST EN ISO 15156-1:2004
ISO 15156-1:2001(E)
Table 1 — List of equipment
ISO 15156-1 is applicable to materials used
Permitted exclusions
for the following equipment
a
Drilling, well construction and well servicing Equipment only exposed to drilling fluids of controlled composition
equipment
Drill bits
b
Blowout preventer (BOP) shear blades
Drilling riser systems
Work strings
c
Wire line and wire line equipment
Surface and intermediate casing
d
Wells, including subsurface equipment, gas lift Sucker rod pumps and sucker rods
equipment, wellheads and christmas trees
Electrical submersible pumps
Other artificial lift equipment
Slips
Flowlines, gathering lines, field facilities and field Crude oil storage and handling facilities operating at gauge pressure below
processing plants 4,3 bar ()65 psi
Sour-water handling equipment
Natural gas treatment plants
Transportation pipelines for liquids, gases and Lines handling gas prepared for domestic use
multiphase fluids
a
Given the high strength often needed, drilling equipment may not comply with the requirements of this part of ISO 15156. In such cases the
primary means for avoiding SSC is control of the drilling or well-servicing environment. As service stresses and material hardness increase,
drilling fluid control becomes increasingly important. Take care to control the drilling environment by maintenance of drilling fluid hydrostatic
head and fluid density to minimize formation fluid in-flow and by one or more of the following procedures: 1) maintenance of pH 10 or higher to
neutralize H S in the drilled formation; 2) use of chemical sulfide scavengers; 3) use of a drilling fluid in which oil is the continuous phase.
2
b
High strength steels used for blowout preventer (BOP) shear blades are highly susceptible to SSC.
c
Wireline lubricators and lubricator connecting devices shall comply.
d
NACE MR 0176 applies to sucker rod pumps and sucker rods.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this part of ISO 15156. For dated references, subsequent amendments to, or revisions of, any of these publications
do not apply. However, parties to agreements based on this part of ISO 15156 are encouraged to investigate the
possibility of applying the most recent editions of the normative documents indicated below. For undated references,
the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of
currently valid International Standards.
ISO 15156-2, Petroleum and natural gas industries — Materials for use in H S-containing environments in oil and
2
gas production — Part 2: Cracking-resistant carbon and low alloy steels
ISO 15156-3, Petroleum and natural gas industries — Materials for use in H S-containing environments in oil and
2
gas production — Part 3: Cracking-resistant CRAs (corrosion-resistant alloys) and other alloys
©
2 ISO 2001 – All rights reserved

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SIST EN ISO 15156-1:2004
ISO 15156-1:2001(E)
3 Terms and definitions
For the purposes of this part of ISO 15156, the following terms and definitions apply.
3.1
blowout preventer
BOP
mechanical device capable of containing pressure, used for control of well fluids and drilling fluids during drilling
operations
3.2
braze, verb
join metals by flowing a thin layer (of capillary thickness) of a lower-melting-point non-ferrous filler metal in the space
between them
3.3
carbon steel
alloy of carbon and iron containing up to 2 % carbon and up to 1,65 % manganese and residual quantities of other
elements, except those intentionally added in specific quantities for deoxidation (usually silicon and/or aluminium)
NOTE Carbon steels used in the petroleum industry usually contain less than 0,8 % carbon.
3.4
christmas tree
equipment at a wellhead for the control of fluid production or injection
3.5
cold work, verb
deform metal plastically under conditions of temperature and strain rate that induce strain hardening, usually
...