scope:

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 NACE MR0175/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 NACE MR0175/ISO 15156-1 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures for petroleum and natural gas industries.

NACE MR0175/ISO 15156 consists of the following parts, under the general title Petroleum and natural gas industries - Materials for use in H(2)S-containing environments in oil and gas production:

- 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