OSI International Standard 1995 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION MEKAYHAPOAHAR OPrAHW3AUWA RO CTAHAAPTM3ALWW-ORGANISATION INTE RNATIONALE DE NORMALISATION ANsl Internat Doc Sect Aromatic hydrocarbons --- Sampling Hydrocarbures aromatiques -- Echantillonnage First edition - 1981-11-01 30V19198 UDC 661.715.4/.7 :620.11 Ref.No.ISO 1995-1981 (E) Descriptors : aromatic hydrocarbons, sampling, vocabulary, safety requirements, sampling equipment, labelling. Price based on 13 pages Copyright Intermational Organization for Standardization Not for Resale Foreword ISO (the tnternational Organization forStandardization)is a worldwide federation of national standards institutes (iso member bodies). The work of developing Inter- national Standards is carried out through Iso technical committees. Every member body interested in a subject for which a technical committee has been set up 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. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISo Council. International Standard ISo 1995 was developed by Technical Committee ISO/TC 78, Aromatic hydrocarbons, and was circulated to the member bodies in November 1979. It has been approved by the member bodies of the following countries : Australia Hungary Netherlands Austria India Philippines Chile Italy Poland Czechoslovakia Japan South Africa, Rep. of France Korea, Rep. of USSR Germany, F.R. Mexico The member body of the following country expressed disapproval of the document on technicalgrounds : United Kingdom International Organization for Standardization, 1981 Printed in Switzerland n for Standardizatior No reproduction or networking permited without license from IHS Not for Resale ISO 1995-1981 (E) INTERNATIONALSTANDARD Aromatic hydrocarbons -- Sampling 0 Introduction c) for monitoring the performance of in-line blending systems, and for determining the properties of a batch of This International Standard is one of a series dealing with the product being made with an in-line blending system. sampling, testing and specification of aromatic hydrocarbons. It is often necessary to employ both tank and pipeline sampling As most aromatic hydrocarbons are similar to petroleum pro- covering particular operations. ducts, many of the sampling procedures used for the latter are equally applicable to the former. Hence, parts of the text in this 1.4 Pipeline sampling may be manual or automatic. InternationalStandardareidentical withthatinIS03170 Petroleum products - Liquid hydrocarbons - Manual sampl- For automatic pipeline sampling, reference should be made to ing. Similarly, as all aromatic hydrocarbons are flammable, and most of them are toxic, the relevant safety precautions describ- ISO3171. ed in iso 3165, Sampling of chemical products for industrial Automatic procedures should be employed if there is a use -- Safety in sampling, have also been incorporated. possibility that the liquid flowing through the pipeline is non- homogeneous. 1 Scope and field of application References 1.1 This International Standard specifies sampling pro- Iso 2859, Sampling procedures and tables for inspection by cedures to be used for obtaining samples of liquid aromatic hydrocarbons from fixed tanks, railcars, road vehicles, barges attributes. and drums, or from liquids being pumped in pipelines. iso 3171, Petroleum products -- Liquid hydrocarbons Automatic pipeline sampling. 1.2 The samples taken by the procedures specified are in- tended to be used to determine : 3 Definitions quality; b) whether contaminants are present; 3.1 aromatic hydrocarbons : Benzene and its homologues, pure or commercially pure, isolated or in mix- c) the degree of homogeneity of a batch. tures, and whether or not containing impurities in a substantial p