ISO 7382:2023
Ethylene for industrial use — Sampling in the liquid and the gaseous phase
This document describes the procedures and the precautions to be taken in drawing representative samples of ethylene in the liquid phase stored at -100 °C and in the gaseous phase, for the purpose of their analysis.
Annex A sets out a diagrammatic representation of a system for the disposal of the portion of the sample which is not used in the analysis.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Safety precautions
5 Sampling from a container filled with ethylene in the liquid phase
5.1 General
5.2 Non-closed sampling apparatus and procedure
5.2.1 Sampling apparatus
5.2.2 Procedure
5.3 Closed sampling apparatus no.1 and procedure
5.3.1 Sampling apparatus
5.3.2 Procedure
5.4 Closed sampling apparatus no.2 and procedure
5.4.1 Sampling apparatus
5.4.2 Procedure
5.5 Closed sampling apparatus no.3 and procedure
5.5.1 Sampling apparatus
5.5.2 Procedure
6 Sampling of ethylene in the gaseous phase
6.1 General
6.2 Non-closed sampling apparatus and procedures
6.3 Closed sampling apparatus and procedures
7 Maintenance of the sampling apparatus
8 Sampling report
Annex A (informative) System for the disposal of samples of liquefied or gaseous light olefins
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Safety precautions
5 Sampling from a container filled with ethylene in the liquid phase
5.1 General
5.2 Non-closed sampling apparatus and procedure
5.2.1 Sampling apparatus
5.2.2 Procedure
5.3 Closed sampling apparatus no.1 and procedure
5.3.1 Sampling apparatus
5.3.2 Procedure
5.4 Closed sampling apparatus no.2 and procedure
5.4.1 Sampling apparatus
5.4.2 Procedure
5.5 Closed sampling apparatus no.3 and procedure
5.5.1 Sampling apparatus
5.5.2 Procedure
6 Sampling of ethylene in the gaseous phase
6.1 General
6.2 Non-closed sampling apparatus and procedures
6.3 Closed sampling apparatus and procedures
7 Maintenance of the sampling apparatus
8 Sampling report
Annex A (informative) System for the disposal of samples of liquefied or gaseous light olefins