BS ISO BRITISH STANDARD 1998-4:1998 Petroleum industry - Terminology Part 4: Refining ICS 01.040.75; 75.180.20 BS IS0 1998-4:1998 National foreword This British Standard reproduces verbatim ISO 1998-4:1998 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee PTI/13, Petroleum testing and terminology, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; - monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled "International Standards Correspondence Index", or by using the “Find" facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and i, the ISO title page, pages ii to iv, pages 1 to 13 and a back cover. This standard has been updated (see copyright date) and may have had amendmentsincorporated.Thiswillbeindicatedintheamendmenttableon theinsidefrontcover This British Standard, having Amendments issued since publication been prepared under the direction of the Sector Committee for Materials and Amd. No. Date Comments Chemicals, was published under the authority of the Standards Committee and comes into effect on 15January1999 @BSI 05-1999 ISBN 0 580 30885 5 BS ISO 1998-4:1998 Contents Page National foreword Inside front cover Foreword i 1 Scope 1 2 Normative reference 1 3 Term numbering 1 4 Index 2 5 Order of listing 2 @BSI05-1999 i