oSIST prEN ISO 15156-1:2020

SLOVENSKI STANDARD
oSIST prEN ISO 15156-1:2020
01-september-2020

Industrija za predelavo nafte in zemeljskega plina - Materiali za uporabo v okoljih s

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

environnements contenant de l'hydrogène sulfuré (H2S) dans la production de pétrole et

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 2

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Abbreviated terms .............................................................................................................................................................................................. 6

5 General principles ............................................................................................................................................................................................... 6

6 Evaluation and definition of service conditions to enable material selection .....................................7

7 Selection of materials resistant to SSC/SCC in the presence of sulfides from existing

lists and tables ........................................................................................................................................................................................................ 8

8 Qualification of materials for H S service .................................................................................................................................. 8

8.1 Material description and documentation ........................................................................................................................ 8

8.2 Qualification based upon field experience ...................................................................................................................... 8

8.3 Qualification based upon laboratory testing ................................................................................................................. 8

8.3.1 General...................................................................................................................................................................................... 8

8.3.2 Sampling of materials for laboratory testing .......................................................................................... 9

8.3.3 Selection of laboratory test methods ............................................................................................................. 9

8.3.4 Conditions to be applied during testing ...................................................................................................... 9

8.3.5 Acceptance criteria ........................................................................................................................................................ 9

9 Report of the method of selection or qualification ........................................................................................................... 9

Bibliography .............................................................................................................................................................................................................................11

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

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

Any trade name used in this document is information given for the convenience of users and does not

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

This document was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore

structures for petroleum, petrochemical and natural gas industries, in collaboration with the European

Committee for Standardization (CEN) Technical Committee CEN/TC 12, Materials, equipment and

offshore structures for petroleum, petrochemical and natural gas industries, in accordance with the

This fourth edition cancels and replaces the third edition (ISO 15156-1:2015), which has been

technically revised. The main changes compared to the previous edition are as follows:

— new definition on "galvanically induced hydrogen stress cracking" (see 3.14), "chemical activity"

— inclusion of an expanded description of factors affecting the susceptibility of materials to cracking

caused by H S. The expanded description includes specific guidance provided in ISO 15156-2:2020,

Annex C for gas phase containing systems using H S fugacity (as an alternative to H S partial

pressure) and application of non-ideal thermodynamic rules for gas-free liquid systems.

Any feedback or questions on this document should be directed to the user’s national standards body. A

The consequences of sudden failures of metallic oil and gas field components, associated with their

exposure to H S-containing production fluids, led to the preparation of the first edition of NACE MR0175,

which was published in 1975 by the National Association of Corrosion Engineers, now known as NACE

The original and subsequent editions of NACE MR0175 established limits of H S partial pressure above

which 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 recent editions, NACE MR0175 has also provided application limits

for some corrosion-resistant alloys, in terms of environmental composition and pH, temperature, and

In separate developments, the European Federation of Corrosion issued EFC Publication 16 in 1995 and

EFC Publication 17 in 1996. These documents are generally complementary to those of NACE though

In 2003, the publication of the ISO 15156 series and NACE MR0175/ISO 15156 was completed for the

first time. These technically identical documents utilized the above sources to provide requirements

and recommendations for materials qualification and selection for application in environments

containing wet H S in oil and gas production systems. They are complemented by NACE TM0177 and

The revision of this document, i.e. ISO 15156-1, involves a consolidation of all changes agreed and

published in the Technical Circular 1, ISO 15156-1:2015/Cir.1:2017, published by the ISO 15156 series

The changes were developed by, and approved by the ballot of, representative groups from within

the oil and gas production industry. The great majority of these changes stem from issues raised by

document users. A description of the process by which these changes were approved can be found at

When found necessary by oil and gas production industry experts, future interim changes to this

document will be processed in the same way and will lead to interim updates to this document in

the form of Technical Corrigenda or Technical Circulars. Document users should be aware that such

documents can exist and can impact the validity of the dated references in this document.

The ISO 15156 series Maintenance Agency at DIN was set up after approval by the ISO Technical

Management Board given in document 34/2007. This document describes the makeup of the agency,

which includes experts from NACE, EFC, and ISO/TC 67, and the process for approval of amendments.

It is available from the ISO 15156 series maintenance website and from the ISO/TC 67 Secretariat. The

website also provides access to related documents that provide more detail of the ISO 15156 series

WARNING — Metallic materials selected using this document are resistant to cracking in defined

H S-containing environments in oil and gas production but not necessarily immune to cracking

under all service conditions. It is the equipment user's responsibility to select materials suitable

This document 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 can pose a risk to the 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 materials requirements given in the appropriate design codes, standards, or

This document addresses all mechanisms of cracking that can be caused by H S, including sulfide stress

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 document is applicable, including

This document applies to the qualification and selection of materials for equipment designed and

constructed using load controlled design methods. For design utilizing strain-based design methods,

This document is not necessarily applicable to equipment used in refining or downstream processes

Drilling, well construction, and well-servicing Equipment exposed only to drilling fluids of controlled

Flowlines, gathering lines, field facilities, and field Crude-oil storage and handling facilities operating at a

Transportation pipelines for liquids, gases, and Lines handling gas prepared for general commercial

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 15156-2, Petroleum and natural gas industries — Materials for use in H S-containing environments in

oil and gas production — Part 2: Cracking-resistant carbon and low alloy steels, and the use of cast irons

ISO 15156-3, Petroleum and natural gas industries — Materials for use in H S-containing environments in

oil and gas production — Part 3: Cracking-resistant CRAs (corrosion-resistant alloys) and other alloys

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

mechanical device capable of containing pressure, used for control of well fluids and drilling fluids

joining metals by flowing a thin layer (of capillary thickness) of a lower-melting-point non-ferrous filler

alloy of carbon and iron containing up to 2 % mass fraction carbon and up to 1,65 % mass fraction

manganese and residual quantities of other elements, except those intentionally added in specific

Note 1 to entry: Carbon steels used in the petroleum industry usually contain less than 0,8 % mass fraction carbon.

plastic deformation of metal under conditions of temperature and strain rate that induce strain

alloy intended to be resistant to general and localized corrosion of oilfield environments that are

steel whose microstructure (3.16) at room temperature consists predominantly of ferrite (3.7)

portion of the base metal that is not melted during brazing, cutting, or welding, but whose microstructure