ISO 1998-6:2000 石油産業—用語—パート6：測定 | ページ 2

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, 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 1998 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

International Standard ISO 1998-6 was prepared by Technical Committee ISO/TC 28, Petroleum products and lubricants., Subcommittee SC 1, Terminology.

This first edition of ISO 1998-6, together with IS0 1998-1:1998, ISO 1998-2:1998, ISO 1998-3:1998, ISO 1998-4:1998, ISO 1998-5:1998, ISO 1998-7:1998 and ISO 1998-99:2000, cancels and replaces ISO 1998-1:1974 and ISO 1998-2:1976.

Together, they constitute a full recast of the standard, with a new classification system for all terms of ISO 1998-1:1974 and ISO 1998-2:1976, which are now distributed in all parts of the new edition, and the addition of many new terms.

ISO 1998 consists of the following parts, under the general title Petroleum industry — Terminology.

• Part 1: Raw materials and products
• Part 2: Properties and tests
• Part 3: Exploration and production
• Part 4: Refining
• Part 5: Transport, storage, distribution
• Part 6: Measurement
• Part 7: Miscellaneous terms
• Part 99: General and index

1 Scope

This part of ISO 1998 introduces a list of equivalent English and French terms, in use in the petroleum industry to indicate the measurement of crude oils and petroleum products, together with the corresponding definitions in the two languages.

ISO 1998 is intended to cover the purposes of this part of petroleum industry dealing with crude oils and petroleum products, that means all related operations arising from the production field to the final user. It is not intended to cover either petroleum equipment, or any operation in the field. However some pieces of equipment or some operations of exploration and production are defined. The corresponding terms were introduced only when they appear in a definition of a product or process and when their definition was found necessary for understanding or for avoiding any ambiguity. Where a terminology of petroleum equipment is needed, it corresponds to the scope of ISO/TC 67 Materials, equipment and offshore structures for petroleum and natural gas industries.

2 Normative reference

The following normative document contains provisions which, through reference in this text, constitute provisions of this part of ISO 1998. 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 1998 are encouraged to investigate the possibility of applying the most recent edition of the normative document 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.

3 Term numbering

The general classification and numbering system used in ISO 1998 employs digits grouped in three categories:

x.yy.zzz