ISO 1998-5:1998

Overview

ISO 1998-5:1998 is Part 5 of the ISO 1998 series that provides standardized terminology for the petroleum industry in the area of transport, storage and distribution. Published by ISO/TC 28 (Petroleum products and lubricants), this bilingual (English/French) vocabulary lists equivalent terms and concise definitions used from the production field through to the final user. ISO 1998-5 is a terminology standard - it defines terms rather than prescribing engineering or safety requirements.

Key topics

The standard focuses on clear, unambiguous definitions and a consistent numbering/classification system (x.yy.zzz). Major topics covered include:

• Transport terminology (subcategory 10): tanker, bill of lading, certificates (quality, quantity, analysis), ship stability terms (trim, list), shipping operations (load on top).
• Pipeline and transfer terms: pipeline, line circulation, line displacement, line press (line packing), line drop (venting/drainage), linefill, pipeline adjustment.
• Distribution and LNG transfer vocabulary: LNG transfer line, gasified LNG transfer compressor.
• Storage terminology (subcategory 20): tank types such as fixed-roof tank and floating roof tank, and other storage-related definitions.
• Indexing and acronyms (subcategory 99) and cross-references to ISO 1998-99 (General and index).

Practical applications

ISO 1998-5 is a reference tool to ensure consistent language across documents and operations. Practical uses include:

• Drafting and interpreting commercial and shipping documents (e.g., bill of lading, certificate of quality/quantity).
• Specifying terms in contracts, custody transfer and measurement procedures (e.g., line displacement, linefill).
• Standardizing terminology in terminal and pipeline operations, LNG handling and maritime transport.
• Producing bilingual documentation and training materials for multinational operations.
• Supporting regulatory filings, audits and quality assurance where precise term definitions reduce ambiguity.

Who should use this standard

• Petroleum logistics managers, terminal operators and pipeline engineers
• Shipping companies, tanker operators and cargo surveyors
• Contract writers, legal teams and customs authorities
• Standards writers, translators and technical authors working in oil & gas
• Training departments and regulatory/compliance teams

Related standards

• ISO 1998 (series): Parts 1–7 and Part 99 (General and index)
• ISO 1998-99 (index and cross-references)
• Prepared by ISO/TC 28, Subcommittee SC 1 (Terminology)

Keywords: ISO 1998-5:1998, petroleum industry terminology, transport storage distribution, oil and gas glossary, pipeline terminology, tanker, bill of lading, line displacement, linefill, LNG transfer.