ISO 1998-99:2000

Overview - ISO 1998-99:2000 (Petroleum industry terminology - Part 99)

ISO 1998-99:2000 is the “General and index” part of the ISO 1998 series that defines petroleum industry terminology. It provides the overall classification and numbering system, explains how the bilingual (English/French) glossary is organized, and publishes a general alphabetical index that links terms to the appropriate technical parts of ISO 1998. The part clarifies scope (crude oils and petroleum products from production field to final user), notes exclusions (petroleum equipment is covered by ISO/TC 67), and states that definitions are intended for standards documents, not as legal definitions.

Key topics and technical requirements

• Term classification system: ISO 1998 is divided into seven technical parts (Raw materials & products; Properties & tests; Exploration & production; Refining; Transport, storage & distribution; Measurement; Miscellaneous). Part 99 makes the overall structure explicit.
• Numbering format: Terms use a three-level numeric code shown as x.yy.zzz (x = part number, yy = subcategory, zzz = serial term number). This consistent coding supports cross-referencing across parts.
• Bilingual entries: Terms are listed with equivalent English and French expressions and corresponding definitions in both languages.
• Index and maintenance: The general alphabetical index covers all parts and is updated when technical parts are published or revised. New terms are initially placed in subcategory 7.95 of ISO 1998‑7 before redistribution during part revisions.
• Normative references: Part 99 lists the related ISO 1998 parts and corrigenda that form the normative backbone for terminology work.

Applications - Who uses ISO 1998-99 and why

• Standards writers and technical committees (ISO/TC 28 and related bodies) use Part 99 to maintain consistent term classification and numbering across the petroleum terminology standard.
• Terminologists, translators, and bilingual documentation teams rely on the English/French glossary and index for accurate, harmonized vocabulary.
• Industry professionals - engineers, laboratory personnel, procurement and quality managers - use the index to locate standard definitions that inform specifications, test methods and product descriptions.
• Regulatory bodies and contract drafters reference the standard definitions in standards-based documents while noting the definitions are not legal definitions.

Related standards and keywords

• Related parts: ISO 1998-1 through ISO 1998-7 and associated corrigenda.
• SEO keywords: ISO 1998-99, petroleum industry terminology, term classification, terminology index, oil and gas terminology, bilingual glossary, term numbering system.