ISO 15519-1:2010

INTERNATIONAL ISO
STANDARD 15519-1
First edition
2010-03-01
Specification for diagrams for process
industry —
Part 1:
General rules
Spécifications pour schémas de l'industrie de traitement —
Partie 1: Règles générales
Reference number
©
ISO 2010
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©  ISO 2010
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ii © ISO 2010 – All rights reserved

Contents Page
Foreword .v
Introduction.vi
1 Scope.1
2 Normative references.1
3 Terms and definitions .2
3.1 Basic terms .2
3.2 Document types.3
3.3 Reference designation.4
4 Documentation principles .5
4.1 General .5
4.2 Technical product documentation.5
4.3 Representation aspects.6
4.4 Focus area in this part of ISO 15519 .7
5 Document sheets.7
5.1 General .7
5.2 Identification area.10
5.3 Content areas.10
6 Lines .11
6.1 Types of line.11
6.2 Width of lines .11
6.3 Space between lines .11
6.4 Leader lines and reference lines.11
7 Reference designations.12
7.1 Introduction.12
7.2 General .12
7.3 Boundary frames .14
7.4 Transition .15
7.5 Objects in a sheet.16
8 Port designations .17
9 Location references .18
10 Technical data and explanatory notes .19
10.1 Components and devices.19
10.2 Flow paths.19
10.3 Explanatory notes .19
10.4 Supplementary diagram symbols.19
11 Graphical symbols .20
11.1 General .20
11.2 Creation of new symbol examples .20
11.3 Features of symbols.20
11.4 Use of symbols in diagrams.22
12 Connections.26
12.1 General .26
12.2 Significant connections.26
12.3 Simplified representation .26
12.4 Joints .26
12.5 Intersections .27
12.6 References for interrupted connecting lines .27
12.7 Objects with two or more system connections .27
13 Layout of diagrams.28
13.1 General aspect .28
13.2 Functional layout .28
13.3 Topographical layout .30
14 Types of diagram .30
14.1 General.30
14.2 Overview diagrams.30
14.3 Function diagrams.31
Annex A (informative) Diagram symbols .34
Annex B (informative) Document type designation and content of information.35
Bibliography .37

iv © ISO 2010 – All rights reserved

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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 15519-1 was prepared by Technical Committee ISO/TC 10, Technical product documentation,
Subcommittee SC 10, Process plant documentation and tpd-symbols.
ISO 15519 consists of the following parts, under the general title Specification for diagrams for process
industry:
⎯ Part 1: General rules
Introduction
This part of ISO 15519 deals with preparation of diagrams and associated documents and data for process
industry.
Together with rules for the preparation of diagrams and associated documents and data, this part of
ISO 15519 includes rules and recommendations for the application of associated standards in diagrams, for
example graphical symbols and reference designation. The following diagram gives an overview of
interrelations between these standards.

Graphical symbols
In this part of ISO 15519 references are made to symbols and rules in the ISO 14617 series by using
registration numbers. Three types of registration number are used in ISO 14617:
⎯ 101 registration number for a symbol;
⎯ R101 registration number for an application rule;
⎯ X101 registration number for an application example.
When reference is made to ISO 14617, the description is in italics, e.g. “Symbol 255: Circular motion”.
Cross-references to referred symbols, rules and examples in the ISO 14617 series can be found in the
registration number index in ISO 14617-1.
Collective application standards
Technical committees, requiring a field specific standard, are allowed, in co-operation with ISO/TC 10, to
develop their own collective application standard for preparation of diagrams in accordance with the rules
given in this part of ISO 15519. Application standards should not be contradictory with respect to this source
standard.
Figures
Figures in this part of ISO 15519 are only examples for illustration of a given rule.
vi © ISO 2010 – All rights reserved

INTERNATIONAL STANDARD ISO 15519-1:2010(E)

Specification for diagrams for process industry —
Part 1:
General rules
1 Scope
This part of ISO 15519 provides general rules and guidelines for the preparation and presentation of
information in diagrams for process industry.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of
...