ISO 8563:2023

INTERNATIONAL ISO
STANDARD 8563
Second edition
2023-06
Propylene and butadiene for
industrial use — Sampling in the
liquid phase
Propylène et butadiène à usage industriel — Échantillonnage en
phase liquide
Reference number
ISO 8563:2023(E)
© ISO 2023

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ISO 8563:2023(E)
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© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
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ISO 8563:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Safety precautions. 1
5 Sampling apparatus . 2
5.1 General . 2
5.2 Sampling cylinders. 2
5.3 Connecting pipes . 5
5.3.1 Connecting pipes for non-closed sampling apparatus . 5
5.3.2 Connecting pipes for closed sampling apparatus . 5
6 Procedure .6
6.1 Non-closed sampling apparatus . 6
6.2 Closed sampling apparatus . 6
6.2.1 Closed sampling apparatus No.1 . 6
6.2.2 Closed sampling apparatus no.2 . 7
7 Sampling report . 7
Annex A (informative) System for the disposal of samples of liquefied or gaseous light
olefins . 8
Annex B (informative) Sequence of operations for filling a sampling cylinder in non-closed
sampling apparatus . 9
Annex C (informative) Sequence of operations for filling a sampling cylinder in closed
sampling apparatus no.1 .11
Annex D (informative) Sequence of operations for filling a sampling cylinder in closed
sampling apparatus no.2 .13
Bibliography .15
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ISO 8563:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 47, Chemistry.
This second edition cancels and replaces the first edition (ISO 8563:1987), which has been technically
revised.
The main changes are as follows:
— Clauses 2 and 3 have been added.
— content from Clause 4, including safety precautions, has been moved elsewhere in the document;
— in Clause 5, explanations regarding apparatus have been added;
— in Clauses 5 and 6, some specific parameters, including size of connecting pipes and time to purge
sampling cylinders, have been deleted;
— in 5.2, a recommendation regarding specially passivated sampling apparatus has been added.
— in 6.1, the procedure of purging the sampling cylinder for non-closed sampling has been revised;
— in 6.2, Annex C and Annex D, two closed-sampling apparatuses have been added.
— Annexes A and B, and Figures 1, 2, A.1 and B.1 have been revised.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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INTERNATIONAL STANDARD ISO 8563:2023(E)
Propylene and butadiene for industrial use — Sampling in
the liquid phase
WARNING — The use of this document can involve hazardous material, operation and equipment.
This document does not purport to address all of the safety problems associated with its use.
It is the responsibility of the users of this document to take appropriate measures to ensure
the safety, health of personnel prior to application of the document and fulfil other applicable
requirement for this purpose.
1 Scope
This document describes the procedures and precautions to be taken in drawing representative
samples of propylene and butadiene, in the liquid 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
not used in the analysis. Annexes B, C and D show the sequence of operations for filling a sampling
cylinder in non-closed and closed sampling apparatus.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3165:1976, Sampling of chemical products for industrial use — Safety in sampling
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
closed sampling apparatus
set of apparatus assembled by a sampling cylinder and connecting pipes to take samples under closed
conditions, by which the sampling process does not permit the release of any sample or vapour to
surrounding environment
3.2
non-closed sampling apparatus
set of apparatus assembled by a sampling cylinder and connecting pipes to take samples in open air, by
which the sampling process permits the release of sample or vapour to surrounding environment
4 Safety precautions
The safety precautions in all sampling and testing operations with liquefied propylene and butadiene
shall be carefully followed in accordance with ISO 3165:1976. Relevant legal and statutory regulations
to ensure safety, health and environmental protection in the procedure of the sampling methods can
apply.
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ISO 8563:2023(E)
When even small quantities of these products are vaporized, significant quantities of extremely
combustible gas are produced which can form explosive mixtures with air. When liquefied propylene
and butadiene evaporate from a metallic surface, intense cooling occurs which can cause burns if
the surface is touched. To aid the handling of sampling cylinders, these can be fitted with a foot (see
Figure 1) or handles.
When vessels containing liquefied propylene and butadiene are emptied, a considerable volume of
vapour is produced which immediately spreads out in the surrounding atmosphere. This vapour has a
high density and can accumulate at low levels.
It is thus essential to observe rigorously the following requirements and guidelines for the handling of
liquefied propylene and butadiene, especially if the quantities are relatively large (e.g., 1 litre).
a) It is presupposed that the use of the vessels, the plant and the equipment conform to the
legal regulations in force. Ensure the vessels are periodically pressure tested by an approved
organization.
b) Bond the sample containers and sampling cylinders together. The sampling apparatus shall always
be electrically grounded during the emptying and transfer of liquefied gases.
c) Operate in premises separated from the work-room and in the absence of naked flames, sparks,
sources of heat and non-explosion-protected electrical equipment.
d) Ensure that there is good ventilation at both high and low levels by using a high-flow fume hood if
the sampling is not carried out in an open-air environment.
e) Verify that the electrical equipment, lighting, fume hood fan motors, etc., are explosion-protected.
It is presupposed that these elements conform to the official regulations in force.
The safety precautions shall be taken when cleaning apparatus, discharging propylene or butadiene,
wastes liquid and steam. The discharging site shall be equipped with safety devices.
If the container is to be transported, it is expected to conform to the specifications of relevant legislation
regarding transportation for hazardous materials.
It is recommended that operators wear safety glasses and gloves and that they expose as little skin as
possible to avoid danger from splashing (arms, forearms, etc.).
Propylene is classified as a simple asphyxiant but butadiene has a threshold limit value (TLV) of 10 mg/
kg.
5 Sampling apparatus
5.1 General
Given the wide variation in the sampling apparatus for propylene and butadiene, it is difficult to specify a
uniform method for obtaining representative samples of heterogeneous mixtures. Examples of sampling
apparatus described in 5.2 and 5.3 have been found satisfactory and are available commercially. Any
other sampling apparatus may be used, however it is presupposed that they conform to the relevant
official decrees and regulations. They shall be capable of sampling propylene and butadiene in liquid
phase.
5.2 Sampling cylinders
The sampling cylinders shall be capable of withstanding a pressure of 3,4 MPa, for liquid propylene,
which has a vapour pressure of 1,1 MPa at 25 °C, or be capable of withstanding a vapour pressure of
1,4 MPa if used only for liquid butadiene, which has a vapour pressure of 0,3 MPa at 25 °C. Any sampling
cylinder may be used. It is presupposed that these sampling cylinders meet sampling requirements and
comply with applicable safety regulations. Figures 1 and 2 show exampl
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