EN ISO 13943:2023

SLOVENSKI STANDARD
01-marec-2024
Nadomešča:
SIST EN ISO 13943:2017
Požarna varnost - Slovar (ISO 13943:2023)
Fire safety - Vocabulary (ISO 13943:2023)
Brandschutz - Vokabular (ISO 13943:2023)
Sécurité au feu - Vocabulaire (ISO 13943:2023)
Ta slovenski standard je istoveten z: EN ISO 13943:2023
ICS:
01.040.13 Okolje. Varovanje zdravja. Environment. Health
Varnost (Slovarji) protection. Safety
(Vocabularies)
13.220.01 Varstvo pred požarom na Protection against fire in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 13943
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2023
EUROPÄISCHE NORM
ICS 01.040.13; 13.220.01 Supersedes EN ISO 13943:2017
English Version
Fire safety - Vocabulary (ISO 13943:2023)
Sécurité au feu - Vocabulaire (ISO 13943:2023) Brandschutz - Vokabular (ISO 13943:2023)
This European Standard was approved by CEN on 15 March 2023.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13943:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 13943:2023) has been prepared by Technical Committee ISO/TC 92 "Fire
safety" in collaboration with Technical Committee CEN/TC 127 “Fire safety in buildings” the secretariat
of which is held by BSI.
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 March 2024, and conflicting national standards shall
be withdrawn at the latest by March 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 13943:2017.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 13943:2023 has been approved by CEN as EN ISO 13943:2023 without any modification.

INTERNATIONAL ISO
STANDARD 13943
Fourth edition
2023-09
Fire safety — Vocabulary
Sécurité au feu — Vocabulaire
Reference number
ISO 13943:2023(E)
ISO 13943:2023(E)
© ISO 2023
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
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 13943:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
Bibliography .59
Index .61
iii
ISO 13943:2023(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
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).
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
such patent rights.
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 92, Fire safety, in collaboration with
the European Committee for Standardization (CEN) Technical Committee CEN/TC 127, Fire safety in
buildings, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
Agreement).
This fourth edition cancels and replaces the third edition (ISO 13943:2017), which has been technically
revised.
The main changes are as follows:
— a total of 86 terms have been added or have had their definitions 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.
iv
ISO 13943:2023(E)
Introduction
0.1 General
Over the last two decades, there has been a significant growth in the field of fire safety. There has been
a considerable development of fire safety engineering design, especially as it relates to construction
projects, as well as the development of concepts related to performance-based design. With this
continuing evolution, there is an increasing need for agreement on a common language in the broad and
expanding area of fire safety, beyond what has traditionally been limited to the field of fire testing.
The first edition of this document, ISO 13943:2000, contained definitions of about 180 terms. However,
the areas of technology that are related to fire safety have continued to evolve rapidly and this edition
contains many new terms and their definitions, as well as revised definitions of some of the terms that
were in earlier editions.
This document defines general terms in order to establish a vocabulary applicable to fire safety,
including fire safety in buildings and civil engineering works and other elements within the built
environment. It will be updated as terms and definitions for further concepts in the field of fire safety
are agreed upon and developed.
It is important to note that some fire safety terms can have a somewhat different interpretation than
the one used in this document when used for regulations. In that case, the definition given in this
document may not apply.
The terms in this document concern:
— fundamental concepts;
— more specific concepts, such as those used specifically in fire testing or in fire safety engineering
and potentially in ISO or IEC International Standards relating to fire; and
— related concepts, such as terms used in building and civil engineering.
The layout is designed according to ISO 10241-1:2011. The terms are presented in English alphabetical
order and preferred terms are written in bold type with admitted and deprecated terms listed below
in normal type.
0.2 Use of the term “item”
For the purposes of this document, the term “item” (in French “objet”) is used to represent any single
object or assembly of objects. It may cover, for example, material, product, assembly, structure or
building, as required in the context of any individual definition.
If the “item” under consideration is a test specimen, then the term “test specimen” is used.
v
INTERNATIONAL STANDARD ISO 13943:2023(E)
Fire safety — Vocabulary
1 Scope
This document defines terminology relating to fire safety as used in ISO and IEC International
Standards.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
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
abnormal heat
heat that is additional to that resulting from use under normal conditions, up to and
including that which causes a fire (3.138)
3.2
absorptivity
ratio of the absorbed radiant heat flux (3.358) to the incident radiative heat flux (3.361)
Note 1 to entry: The absorptivity is dimensionless.
3.3
acceptance criteria
criteria that form the basis for assessing the acceptability of the safety of a design of a built environment
(3.36)
Note 1 to entry: The criteria can be qualitative, quantitative or a combination of both.
3.4
accuracy
closeness of the agreement between the result of a measurement and the true value of the measurand
(3.298)
[SOURCE: ASTM E176: 2021]
3.5
activation time
time interval from response by a sensing device until the suppression system (3.418), smoke (3.389)
control system, alarm system or other fire safety system is fully operational
ISO 13943:2023(E)
3.6
active fire protection
method(s) used to reduce or prevent the spread and effects of fire (3.138), heat or smoke (3.389) by
virtue of detection and/or suppression of the fire and which require a certain amount of motion and/or
response to be activated
EXAMPLE The application of agents (e.g. halon gas or water spray) to the fire or the control
...