EN ISO 10628-1:2015

SLOVENSKI STANDARD
01-april-2015
1DGRPHãþD
SIST EN ISO 10628:2002
Sheme za kemijsko in petrokemijsko industrijo - 1. del: Opredelitev shem (ISO
10628-1:2014)
Diagrams for the chemical and petrochemical industry - Part 1: Specification of diagrams
(ISO 10628-1:2014)
Schemata für die chemische und petrochemische Industrie - Teil 1: Spezifikation der
Schemata (ISO 10628-1:2014)
Schémas de procédé pour l'industrie chimique et pétrochimique - Partie 1: Spécification
des schémas de procédé (ISO 10628-1:2014)
Ta slovenski standard je istoveten z: EN ISO 10628-1:2015
ICS:
01.080.30 *UDILþQLVLPEROL]DXSRUDERY Graphical symbols for use on
ULVEDKGLDJUDPLKQDþUWLK mechanical engineering and
]HPOMHYLGLKYVWURMQLãWYXLQ construction drawings,
JUDGEHQLãWYXWHUYXVWUH]QL diagrams, plans, maps and in
WHKQLþQLSURL]YRGQL relevant technical product
GRNXPHQWDFLML documentation
71.020 Proizvodnja v kemijski Production in the chemical
industriji industry
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 10628-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2015
ICS 01.110; 71.020; 75.020 Supersedes EN ISO 10628:2000
English Version
Diagrams for the chemical and petrochemical industry - Part 1:
Specification of diagrams (ISO 10628-1:2014)
Schémas de procédé pour l'industrie chimique et Schemata für die chemische und petrochemische Industrie
pétrochimique - Partie 1: Spécification des schémas de - Teil 1: Spezifikation der Schemata (ISO 10628-1:2014)
procédé (ISO 10628-1:2014)
This European Standard was approved by CEN on 16 August 2014.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10628-1:2015 E
worldwide for CEN national Members.

Contents Page
Foreword .3
Foreword
This document (EN ISO 10628-1:2015) has been prepared by Technical Committee ISO/TC 10 “Technical
product documentation” in collaboration with CCMC.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by July 2015, and conflicting national standards shall be withdrawn at the
latest by July 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 10628:2000.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 10628-1:2014 has been approved by CEN as EN ISO 10628-1:2015 without any modification.

INTERNATIONAL ISO
STANDARD 10628-1
First edition
2014-09-15
Diagrams for the chemical and
petrochemical industry —
Part 1:
Specification of diagrams
Schémas de procédé pour l’industrie chimique et pétrochimique —
Partie 1: Spécification des schémas de procédé
Reference number
ISO 10628-1:2014(E)
©
ISO 2014
ISO 10628-1:2014(E)
© ISO 2014
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved

ISO 10628-1:2014(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification, information content, and presentation of flow diagrams .1
4.1 General . 1
4.2 Block diagrams . 2
4.3 Process flow diagrams . 3
4.4 Piping and instrumentation diagrams (P&ID). 3
5 Drafting rules . 4
5.1 General . 4
5.2 Layout of flow diagrams . 5
5.3 Connecting lines . 5
5.4 Inscription . 7
5.5 Scale . 8
5.6 Limits . 8
Annex A (informative) Examples of flow diagrams for process plants .10
Bibliography .16
ISO 10628-1:2014(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
committee has been established 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.
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 documents 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 10, Technical product documentation,
Subcommittee SC 10, Process plant documentation.
This first edition of ISO 10628-1, along with ISO 10628-2, cancels and replaces ISO 10628:1997, which
has been technically revised.
ISO 10628 consists of the following parts, under the general title Diagrams for chemical and petrochemical
industry:
— Part 1: Specifications of diagrams
— Part 2: Graphical symbols
iv © ISO 2014 – All rights reserved

INTERNATIONAL STANDARD ISO 10628-1:2014(E)
Diagrams for the chemical and petrochemical industry —
Part 1:
Specification of diagrams
1 Scope
This part of ISO 10628 specifies the classification, content, and representation of flow diagrams. In
addition, it lays down drafting rules for flow diagrams for chemical and petrochemical industry.
This International Standard does not apply to electrical engineering diagrams. This part of ISO 10628 is
a collective application standard of ISO 15519.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 128 (all parts), Technical drawings — General principles of presentation
ISO 7200, Technical product documentation — Data fields in title blocks and document headers
ISO 10209, Technical product documentation — Vocabulary — Terms relating to technical drawings,
product definition and related documentation
ISO 14617 (all parts), Graphical symbols for diagrams
ISO 15519 (all parts), Specification for diagrams for process industry
ISO 80000-1, Quantities and units — Part 1: General
IEC 62424:2008, Representation of process control engineering requests in P&I diagrams and data exchange
between P&ID tools and PCE-CAE tools
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 10209, ISO 14617 (all parts),
ISO 15519 (all parts), and IEC 62424 apply.
4 Classification, information content, and presentation of flow diagrams
4.1 General
Flow diagrams show the structure and function of the process plants and are part of the entire set
of technical documents which are required for planning, assembly, construction, management,
commissioning, operation, maintenance, shutdown, and decommissioning of a plant.
Flow diagrams are a means by which information is exchanged between parties involved in the
construction, assembly, operation, and maintenance of such process plants. General rules and
recommendations for preparation of flow diagrams are given in ISO 15519.
ISO 10628-1:2014(E)
Depending on
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