ISO/FDIS 10209

Technical product documentation -- Vocabulary -- Terms relating to technical drawings, product definition and related documentation

Documentation technique de produits -- Vocabulaire -- Termes relatifs aux dessins techniques, à la définition de produits et à la documentation associée

General Information

• Status: Published
• ICS: 01.040.01 - Generalities. Terminology. Standardization. Documentation (Vocabularies)
• ICS: 01.110 - Technical product documentation
• Technical Committee: ISO/TC 10 - Technical product documentation
• Drafting Committee: ISO/TC 10/WG 17 - Vocabulary of terms and definitions
• Current Stage: 5060 - Close of voting Proof returned by Secretariat
• Completion Date: 13-Jan-2022

RELATIONS

• Revised: ISO 10209:2012 - Technical product documentation -- Vocabulary -- Terms relating to technical drawings, product definition and related documentation
• Effective Date: 03-Jun-2017

Standards Content (sample)

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 10209
ISO/TC 10
Technical product documentation —
Secretariat: SIS
Vocabulary — Terms relating to
Voting begins on:
2021-11-18 technical drawings, product definition
and related documentation
Voting terminates on:
2022-01-13
Documentation technique de produits — Vocabulaire — Termes
relatifs aux dessins techniques, à la définition de produits et à la
documentation associée
ISO/CEN PARALLEL PROCESSING
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 10209:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2021
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ISO/FDIS 10209:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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

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Published in Switzerland
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ISO/FDIS 10209:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ..................................................................................................................................................................................... 1

3 Terms and definitions .................................................................................................................................................................................... 1

3.1 General terms .......................................................................................................................................................................................... 1

3.2 Views ............................................................................................................................................................................................................ 11

3.3 Dimensions ............................................................................................................................................................................................. 17

3.4 Lines .............................................................................................................................................................................................................. 18

3.5 Tolerances ................................................................................................................................................................................................ 20

3.6 Graphics ..................................................................................................................................................................................................... 20

3.7 Symbology ............................................................................................................................................................................................... 21

3.8 Digital practices.................................................................................................................................................................................. 24

3.9 Computer-related terms ........................................................................................................................................... ...................29

3.10 Documentation ....................................................................................................................................................................................30

3.11 Document management ...............................................................................................................................................................44

3.12 Writing and marking instruments ....................................................................................................................................46

3.13 Design for manufacturing, assembling, disassembling and end-of-life processing ...............49

3.14 Information and instructions for use ..............................................................................................................................49

Bibliography .............................................................................................................................................................................................................................55

iii
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ISO/FDIS 10209:2021(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 of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 10, Technical product documentation, in

collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/SS

F01, Technical drawings, in accordance with the Agreement on technical cooperation between ISO and

CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 10209:2012), which has been technically

revised with the addition, deletion or revision of certain terms and the deletion of Annex A (deprecated

terms).

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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FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 10209:2021(E)
Technical product documentation — Vocabulary — Terms
relating to technical drawings, product definition and
related documentation
1 Scope

This document establishes and defines terms used in technical product documentation relating to

technical drawings, product definition and related documentation in all fields of application.

The terms have been classified into specific fields of application.

NOTE New terms required by ISO/TC 10 subcommittees and working groups for new or revised standards

will be ratified by the ISO/TC 10 vocabulary maintenance team and included in future amendments of this

document.
2 Normative references
There are no normative references in this document.
3 Terms and definitions

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1 General terms
3.1.1
activity

processes, procedures or parts of them, usually related to established organization units

Note 1 to entry: The terms “process” and “procedure” are defined in ISO 9000. A detailed explanation of processes

within companies is also given in ISO 9000.
3.1.2
activity matrix

matrix allocating activities to phases of the product life cycle and to a fixed organization unit

3.1.3
analysis

part of the product development process where a specification of requirements is prepared

3.1.4
ancillary system
system which is not directly required for the power plant process

Note 1 to entry: This includes heating, ventilation, air-conditioning systems, space heating systems, stationary

compressed air supplies, fire protection systems, cranes, elevators, workshops and staff amenities.

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ISO/FDIS 10209:2021(E)
3.1.5
application reference model

information model that formally describes the information requirements and constraints for an

application area
3.1.6
aspect

specific way of selecting information on, or describing, a system or an object

of a system
3.1.7
aspect
specific way of viewing an object
Note 1 to entry: Such ways include:
— what the system or object is doing (function viewpoint);
— how the system or object is constructed (product viewpoint);
— where the system or object is located (location viewpoint).
3.1.8
assembly
number of component parts fitted together to perform a specific function
3.1.9
authorization
privileges that give access to designated activities
3.1.10
auxiliary system
system which is required for the support of a power plant process

Note 1 to entry: This includes auxiliary steam system, compressed air, carrier air, control air, central chemicals

supply and sampling systems.
3.1.11
basic design

part of the product development process where one or more design proposals are evaluated and the

basic documentation for design is prepared
3.1.12
burr

rough remainder of material outside the ideal geometrical shape of an external edge, residue of

machining or forming process
3.1.13
CAD model

structured computer-aided design (CAD) data file(s) organized according to the physical parts of the

objects represented, for example a building or a mechanical device

Note 1 to entry: Models can be two-dimensional or three-dimensional and can include graphical as well as non-

graphical data attached to the objects.
3.1.14
complex device

device consisting of several functionally interrelated components or elements, the description of which

needs a diagram
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ISO/FDIS 10209:2021(E)
3.1.15
component

constituent part of equipment that cannot be physically divided into smaller parts without losing its

character
3.1.16
conceptual design

part of the product development process which includes the preparation of design specifications and

design proposals for a product
3.1.17
conceptual schema
implementation-independent specification of information structures
3.1.18
concurrent engineering

coordination of parallel activities in the product life cycle, especially in the phases up to market

introduction
3.1.19
configuration control

activities comprising the control of changes to a configuration item after formal establishment of its

configuration documents
3.1.20
conjoint designation

designation of site, factory or plant complex as an optional element of the object identifier

3.1.21
construct
concept or fact that is modelled
3.1.22
coordinate axis

three reference straight lines in space which intersect at the point of origin, thus forming a coordinate

system
3.1.23
coordinate system

basis for establishing a relationship between each point in space and the three corresponding

coordinates and vice versa
3.1.24
coordinates

set of numerical ordered values (and their corresponding units of measure), giving unequivocally the

position of a point in a coordinate system
3.1.25
cylindrical coordinate system

coordinate system based on a reference system given by a reference horizontally oriented straight line

and its origin and units of measure
3.1.26
cylindrical coordinates

three coordinates of a point in space relative to a cylindrical coordinate system

Note 1 to entry: The three coordinates are: 1) the radius (distance of the point from the vertical axis passing

through the origin); 2) the azimuth (angle formed by the vertical plane passing through the point and the origin

and the reference horizontally oriented straight line); and 3) the height (distance of the point from the horizontal

plane passing through the origin).
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ISO/FDIS 10209:2021(E)
3.1.27
data medium
material on which data can be recorded and from which they can be retrieved
3.1.28
detailed design

part of the product development process which includes the preparation of the final product definition

3.1.29
device
assembly of components to perform a required function
3.1.30
edge
intersection of two surfaces
3.1.31
element
part of a component
3.1.32
enlargement scale
scale where the ratio is larger than 1:1
3.1.33
equipment
single part of a plant
EXAMPLE Vessel, column, heat exchanger, pump, compressor.
3.1.34
full size
scale with the ratio 1:1
3.1.35
function

activity proper to anything, mode of action by which it fulfils its purpose

3.1.36
function
intended or accomplished purpose or task
3.1.37
functional area
combination of groups and/or elements in a unit that can be used independently
3.1.38
functional group
combination of elements in a unit that can be used independently
3.1.39
functional unit

constructional assembly containing functionally interrelated components or

devices
3.1.40
functional unit
item under consideration defined according to function or effect
3.1.41
identifier
one or more characters used to identify or name a data category
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ISO/FDIS 10209:2021(E)
3.1.42
industrial complex

number of discrete or interconnected process plants, together with the associated buildings

3.1.43
information model

conceptual model that describes a specific organization of data to provide communication

for a given application context
3.1.44
information model

implementation-independent specification of information structures

3.1.45
layer

self-contained group of data that can be manipulated or displayed individually

3.1.46
layer

organizational attribute of entities in a computer-aided design (CAD) data

file, used to separate data in order to manage and communicate those data and to control visibility on

the computer screen and on plotted drawings

Note 1 to entry: In CAD systems, synonyms for layer are used, for example “level”.

3.1.47
line distance factor

factor defining the distance between succeeding base lines of a text in relation to the lettering height of

the characters
3.1.48
medium
means of storing, representing and communicating information
3.1.49
multi-level reference designation

reference designation derived from a structure path through an overall system

3.1.50
multi-level reference designation

reference designation consisting of concatenated single-level reference

designations
3.1.51
object

entity treated in the process of design, engineering, realization, operation,

maintenance and demolition
3.1.52
object

entity treated in a process of development, implementation, usage and disposal

Note 1 to entry: The object may refer to a physical or non-physical thing that possibly exists, exists or did exist.

Note 2 to entry: The object has information associated to it.
3.1.53
organization unit
part of an organization, with a fixed function
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ISO/FDIS 10209:2021(E)
3.1.54
part number
unique identification of a part for a particular organization
3.1.55
part reference

identification of component parts of assemblies and/or the identification of individual parts on the

same drawing

Note 1 to entry: Part references are document-based, as opposed to reference designations, which are structure-

based. Identical parts on drawings have the same part reference, normally a number (according to ISO 6433),

while each occurrence of an object in a structure has a unique reference designation (according to IEC 81346-1).

3.1.56
physical unit
item under consideration, defined according to construction or configuration

Note 1 to entry: One or several functional units may be implemented in a single physical unit. The corresponding

functional unit(s) is/are in some cases not explicitly designated.

Note 2 to entry: The various parts of a physical unit need not be functionally interrelated. For example, a physical

unit may be in the form of an integrated circuit with four independent AND modules.

Note 3 to entry: If compound terms are used to designate physical units, the following should be used as the last

word (in ascending order of rank):
— component;
— assembly;
— device;
— plant.
Note 4 to entry: See IEC 60050-351:2013, 351-56-03.
3.1.57
plant

complete set of technical equipment and facilities for solving a defined technical task

Note 1 to entry: A plant includes apparatus, machines, instruments, devices, means of transportation, control

equipment and other operating equipment.
3.1.58
plant section

part of a process plant that can, at least occasionally, be operated independently

3.1.59
polar coordinate axis
horizontally oriented straight line and its origin
3.1.60
polar coordinate system

coordinate system based on a reference system given by a polar coordinate axis and its units of measure

3.1.61
polar coordinates
three coordinates of a point in space relative to a polar coordinate system

Note 1 to entry: The three coordinates are: 1) the radius (distance between the point and the origin); 2) the

azimuth (angle formed by the vertical plane passing through the point and the origin, and the polar coordinate

axis); and 3) the angular height (angle formed by the horizontal plane passing through the origin and the straight

line passing through the point and the origin).
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ISO/FDIS 10209:2021(E)
3.1.62
process

sequence of chemical, physical or biological operations for the

conversion, transport or storage of material or energy

Note 1 to entry: Different processes or process steps can be carried out in the same process plant or plant section

at different times.

Note 2 to entry: A process can also be regarded as an entirety of interacting events in a system through which

material, energy or information are transformed, transported or stored.
3.1.63
process

set of interacting operations by which material, energy or information is

transformed, transported or stored
3.1.64
process plant
facilities and structures necessary for performing a process
3.1.65
process step

part of a process which is predominantly self-sufficient and consists of one or several unit operations

3.1.66
product

intended or accomplished result of labour or of a natural or artificial process

3.1.67
product

thing or substance produced by a natural or artificial process

3.1.68
product
thing or result produced by a natural process or manufacture
3.1.69
product definition data
data elements required to completely define a product
3.1.70
product definition data set

collection of one or more computer file(s) that discloses (directly or by reference), by means of graphic

or textual presentations, or combinations of both, the physical and functional requirements of a product

3.1.71
rectangular coordinate planes
coordinate planes intersecting at right angles
3.1.72
rectangular coordinate system

coordinate system based on a reference system given by three mutually orthogonal axes (rectangular

coordinate axes), originating from the same point (origin), and their units of measure

3.1.73
rectangular coordinates

x, y and z coordinates of a point in space relative to a rectangular coordinate system

3.1.74
rectangular coordinate axes
coordinate axes intersecting at right angles
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ISO/FDIS 10209:2021(E)
3.1.75
reference designation

identifier of a specific object with respect to the system of which the object is a

constituent, based on one or more aspects of that system
3.1.76
reference designation

code for identification of equipment in the functional position of the process

3.1.77
reference designation set

collection of two or more reference designations assigned to an object of which at least one

unambiguously identifies this object
3.1.78
scale

ratio of the linear dimension of an element of an object as represented in the original drawing to the

real linear dimension of the same element of the object itself

Note 1 to entry: The scale of a print may be different from that of the original drawing.

3.1.79
scaling factor

factor by which the coordinates of all defined points of the symbol will be enlarged or reduced in size in

relation to the reference point of the symbol
3.1.80
sharp edge

external or internal edge of part with almost zero deviation from the ideal geometrical shape

3.1.81
single-level reference designation

reference designation assigned with respect to the object of which the specific object is a direct

constituent in one aspect
3.1.82
specification of requirements
compilation of market-, authority- and company-related requirements

Note 1 to entry: 'Authority' relates to, for example, laws, regulations and directives.

3.1.83
state of an edge
geometrical shape and size of an edge
3.1.84
structure

organization of relations among objects of a system describing constituency relations (consist-of/is-a-

part-of)
3.1.85
sub-contract
contract to carry out part of a larger contract
3.1.86
system

set of interrelated objects considered in a defined context as a whole and separated from their

environment

Note 1 to entry: A system is generally defined with the view of achieving a given objective, for example by

performing a definite function.
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ISO/FDIS 10209:2021(E)

Note 2 to entry: Elements of a system may be natural or man-made material objects, as well as modes of thinking

and the results thereof (e.g. forms of organization, mathematical methods, programming languages).

Note 3 to entry: The system is considered to be separated from the environment and from the other external

systems by an imaginary surface, which cuts the links between them and the system.

Note 4 to entry: The term system should be qualified when it is not clear from the context to what it refers, e.g.

control system, colorimetric system, system of units, transmission system.

Note 5 to entry: When a system is part of another system, it may be considered as an object as defined in this

document.
3.1.87
tender

written offer to execute at a stated price or rate an order for the supply of goods or services or the

execution of works under given conditions
3.1.88
terminal designation

identifier of a terminal with respect to the object to which it belongs, related to one aspect of the object

3.1.89
unit operation
simplest operation in a process according to the theory of process technology
3.1.90
works
system of industrial complexes and the associated infrastructure in one location
3.1.91
knurling tool
knurl

tool or die used to make a raised surface on a workpiece by a cutting or rolling process

3.1.92
knurling
patterned raised surface on a workpiece produced by a knurl
3.1.93
diametral pitch
radial distance between two teeth measured on the outer diameter of the knurling
3.1.94
building

construction work that has the provision of shelter for its occupants or contents as one of its main

purposes, and which is usually partially or totally enclosed and designed to stand permanently in one

place
Note 1 to entry: A building is a type of construction entity.
3.1.95
control
purposeful action on or in a process to meet specified objectives

Note 1 to entry: Actions include measure, count, monitor, indicate, alert, record, log, manipulate, evaluate,

optimize, intervene, manipulate by hand, safeguard, structure, configure, parameter, automate.

3.1.96
designation block

structured compilation of related information units, consisting of a prefix, letters and numbers, and

optionally a breakdown mark
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ISO/FDIS 10209:2021(E)
3.1.97
operating equipment

products which serve to implement technical tasks as a whole or in individual parts

3.1.98
power plant process

process for the generation of electrical energy and/or heat energy products, including the conversion,

supply and disposal processes
3.1.99
power plant unit

technical plant including all equipment needed for fulfilment of a power plant process

3.1.100
technical equipment
physical or functional unit used to fulfil a technical task
3.1.101
actuator

functional unit that generates from the controller output variable the manipulated variable to drive the

final controlling element

Note 1 to entry: If the final controlling element is mechanically actuated, it is controlled via an actuated drive.

The actuator drives the actuating drive in this case.
3.1.102
closed-loop control

process whereby one variable (quantity), namely the controlled variable, is continuously measured

compared with another variable (quantity), namely the reference variable, and influenced in such a

manner as to adjust to the reference variable

Note 1 to entry: A characteristic of closed-loop control is the closed action in which the controlled variable

continuously influences itself in the action path of the closed loop.
3.1.103
control function

manipulation via the final controlling element of process media or process objects in order to bring the

media or object into a condition or state defined by the process control system on the basis of measured

process variables and predefined values
3.1.104
control loop
assembly of elements incorporated in the closed action of a closed-loop control
3.1.105
final controlling element

functional unit forming part of the controlled system and arranged at its input, driven by the

manipulated variable and manipulating the mass flow or energy flow

Note 1 to entry: If the final controlling element is mechanically actuated, an additional actuator (positioner) is

used in some cases.

Note 2 to entry: The output variable of the final controlling equipment is usually not free from feedback. The

interface between the actuator and the final controlling element should therefore be selected in such a way that

the manipulated variable is not affected by feedback from the final controlling element.

3.1.106
manipulate

change flows of mass energy or information by means of a final controlling element

Note 1 to entry: Manipulating can be affected continuously or by switching operations.

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ISO/FDIS 10209:2021(E)

Note 2 to entry: In control engineering, the final controlling element is regarded as belonging to a process.

3.1.107
open-loop control

process in a system whereby one or more variables (variable quantities) as input variables influence

other variables (variable quantities) as output variables in accordance with the proper laws of the

system

Note 1 to entry: A characteristic of open-loop control is the open action path or, in the case of a closed action

path, the fact that the output variables being influenced by the input variables are not continuously influencing

themselves and not by the same input variables.
3.1.108
process variable
quantity, quality o
...