SIST EN ISO 19353:2019

SLOVENSKI STANDARD
SIST EN ISO 19353:2019
01-maj-2019
1DGRPHãþD
SIST EN ISO 19353:2016
Varnost strojev - Požarna varnost (ISO 19353:2019)
Safety of machinery - Fire prevention and fire protection (ISO 19353:2098)
Sicherheit von Maschinen - Vorbeugender und abwehrender Brandschutz (ISO
19353:2019)
Sécurité des machines - Prévention et protection contre l'incendie (ISO 19353:2019)
Ta slovenski standard je istoveten z: EN ISO 19353:2019
ICS:
13.110 Varnost strojev Safety of machinery
13.220.01 Varstvo pred požarom na Protection against fire in
splošno general
SIST EN ISO 19353:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 19353:2019

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SIST EN ISO 19353:2019


EN ISO 19353
EUROPEAN STANDARD

NORME EUROPÉENNE

February 2019
EUROPÄISCHE NORM
ICS 13.110 Supersedes EN ISO 19353:2016
English Version

Safety of machinery - Fire prevention and fire protection
(ISO 19353:2019)
Sécurité des machines - Prévention et protection Sicherheit von Maschinen - Vorbeugender und
contre l'incendie (ISO 19353:2019) abwehrender Brandschutz (ISO 19353:2019)
This European Standard was approved by CEN on 21 January 2019.

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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19353:2019 E
worldwide for CEN national Members.

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SIST EN ISO 19353:2019
EN ISO 19353:2019 (E)
Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 4

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SIST EN ISO 19353:2019
EN ISO 19353:2019 (E)
European foreword
This document (EN ISO 19353:2019) has been prepared by Technical Committee ISO/TC 199 "Safety of
machinery" in collaboration with Technical Committee CEN/TC 114 “Safety of machinery” the
secretariat of which is held by DIN.
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 August 2019, and conflicting national standards shall
be withdrawn at the latest by August 2019.
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 19353:2016.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZA, which is an integral part of this
document.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 19353:2019 has been approved by CEN as EN ISO 19353:2019 without any modification.

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SIST EN ISO 19353:2019
EN ISO 19353:2019 (E)
Annex ZA
(informative)


Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered
This European Standard has been prepared under a Commission’s standardization request “M/396
Mandate to CEN and CENELEC for Standardisation in the field of machinery” to provide one voluntary
means of conforming to essential requirements of Directive 2006/42/EC of the European Parliament
and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast).
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that Directive and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and Annex I of Directive
2006/42/EC
Essential Requirement of Clause(s)/subclause(s) Remarks/Notes
Directive of this EN
Essential Requirement 1.5.6 Clauses 4 to 7 None
with regard to identification of
the protective measures
available for risk reduction

WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the products falling within the scope of this
standard.

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SIST EN ISO 19353:2019
INTERNATIONAL ISO
STANDARD 19353
Third edition
2019-01
Safety of machinery — Fire prevention
and fire protection
Sécurité des machines — Prévention et protection contre l'incendie
Reference number
ISO 19353:2019(E)
©
ISO 2019

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SIST EN ISO 19353:2019
ISO 19353:2019(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2019
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
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

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SIST EN ISO 19353:2019
ISO 19353:2019(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Fire hazards . 3
4.1 General . 3
4.2 Combustible materials . 4
4.3 Oxidizers . 4
4.4 Ignition sources . 4
5 Strategy for fire risk assessment and risk reduction . 5
5.1 General . 5
5.2 Determination of the limits of the machinery . 7
5.3 Identification of fire hazards . 7
5.4 Risk estimation . 8
5.5 Risk evaluation . 9
5.6 Risk reduction .10
5.6.1 General.10
5.6.2 Inherently safe design measures .10
5.6.3 Safeguarding .11
5.6.4 Complementary protective measures .11
6 Procedure for the selection of complementary protective measures .12
6.1 General .12
6.1.1 Use of the procedure .12
6.1.2 Determination of the residual risk level .13
6.1.3 Specification of requirements for the choice of fire detection and fire
suppression system .13
6.1.4 Specification of safety and performance requirements .13
6.1.5 Selection of system parts and suitable fire-extinguishing agent .13
6.1.6 Decision on the need for further complementary protective measures .13
6.1.7 Validation .13
6.2 Selection of the fire prevention and protection system in relation to the expected
risk level .13
6.2.1 General.13
6.2.2 Injury to persons.14
6.2.3 Safety considerations .14
6.2.4 Selection of system parts .14
6.2.5 Selection of fire-extinguishing agent .14
6.2.6 Validation .15
7 Information for use .15
Annex A (informative) Examples of machines and their typical fire-related hazards .17
Annex B (informative) Example of a methodology for selecting and qualifying a fire
detection and fire suppression system .18
Annex C (informative) Example for the design of a fire suppression system integrated in
machinery .35
Annex D (informative) Examples of ignition sources .36
Annex E (informative) Example for the risk assessment and risk reduction of a machining
centre for the machining of metallic materials .38
Bibliography .49
© ISO 2019 – All rights reserved iii

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SIST EN ISO 19353:2019
ISO 19353:2019(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 199, Safety of machinery.
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.
This third edition cancels and replaces the second edition (ISO 19353:2015), which has been technically
revised. It also incorporates the Amendment ISO 19353:2015/DAM 1:2017. The main changes compared
to the previous edition are as follows:
— old Annexes A and B have become Annexes D and A, respectively;
— an example of methodology for selecting and qualifying a fire detection and fire suppression system
has been added as new Annex B;
— old Annex D has been improved editorially and it has become Annex E;
— old Annex E on fire risk reduction measures has been deleted as well as references to it.
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SIST EN ISO 19353:2019
ISO 19353:2019(E)

Introduction
The safety of machinery against fire involves fire prevention and fire protection and fire-fighting. In
general, these include technical, structural, organizational and fire suppression measures. Effective fire
safety of machinery can require the implementation of a single measure or a combination of measures.
This document deals with the measures shown in Figure 1.
Figure 1 — Protective measures dealt with in ISO 19353
This document is a type-B standard as stated in ISO 12100.
This document is of relevance, in particular, for the following stakeholder groups representing the
market players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organizations, market surveillance etc.).
Others can be affected by the level of machinery safety achieved with the means of the document by the
above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e. g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this document.
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SIST EN ISO 19353:2019
ISO 19353:2019(E)

In addition, this document is intended for standardization bodies elaborating type-C standards.
The requirements of this document can be supplemented or modified by a type-C standard.
For machines which are covered by the scope of a type-C standard and which have been designed and
built according to the requirements of that standard, the requirements of that type-C standard take
precedence.
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SIST EN ISO 19353:2019
INTERNATIONAL STANDARD ISO 19353:2019(E)
Safety of machinery — Fire prevention and fire protection
1 Scope
This document specifies methods for identifying fire hazards resulting from machinery and for
performing a risk assessment.
It gives the basic concepts and methodology of protective measures for fire prevention and protection
to be taken during the design and construction of machinery. The measures consider the intended use
and reasonably foreseeable misuse of the machine.
It provides guidelines for consideration in reducing the risk of machinery fires to acceptable levels
through machine design, risk assessment and operator instructions.
This document is not applicable to:
— mobile machinery;
— machinery designed to contain controlled combustion processes (e.g. internal combustion engines,
furnaces), unless these processes can constitute the ignition source of a fire in other parts of the
machinery or outside of this;
— machinery used in potentially explosive atmospheres and explosion prevention and protection; and
— fire detection and suppression systems that are integrated in building fire safety systems.
It is also not applicable to machinery or machinery components manufactured before the date of its
publication.
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 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13849-1, Safety of machinery — Safety-related parts of control systems — Part 1: General principles
for design
ISO 13943, Fire safety — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12100, ISO 13943 and the
following apply.
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/
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SIST EN ISO 19353:2019
ISO 19353:2019(E)

3.1
combustibility
property of a material capable of burning
Note 1 to entry: Accurate assessment of the combustibility characteristics of a material depends on the operating
conditions of the machinery and the form and physical state of the material (e.g. gaseous, liquid or solid; solids
chopped to form shavings or dust, or not).
Note 2 to entry: On the basis of their combustibility, materials can be classified into non-combustible, hardly
combustible, combustible and easily combustible materials. It is important not to mix up combustibility on the
one hand, and flammability or ignitability on the other. Consequently, flash points and ignition points do not
represent quantitative measures of combustibility.
3.2
extinguishing opening
port in the machine housing, closed with a plug or flap that can be safely accessed with an
extinguishing device
Note 1 to entry: An extinguishing device, e.g. a hose or lance, can be used.
3.3
fire
self-supporting combustion that can occur as controlled combustion or uncontrolled combustion
Note 1 to entry: Controlled combustion is deliberately arranged to provide an intended effect.
Note 2 to entry: Uncontrolled combustion is spreading uncontrolled in time and space.
Note 3 to entry: In the case of a combustion control failure, controlled combustion can lead to uncontrolled
combustion.
3.4
fire-extinguishing agent
agent which is appropriate to extinguish fire (3.3) by cooling below ignition temperature and/or by
reducing the oxidizer level
Note 1 to entry: The extinguishing agent can be gaseous, liquid or solid. Common extinguishing agents include
water, carbon dioxide, nitrogen, argon, chemical powder or foam.
3.5
fire prevention
set of measures to prevent the outbreak of a fire (3.3) and/or to limit its effects
[SOURCE: ISO 8421-1:1987, 1.21, modified — The words “set of” has been added to the definition.]
3.6
fire protection
set of measures such as design features, systems, equipment, buildings or other structures to reduce
danger to persons and property by detecting, extinguishing or containing fires (3.3)
[SOURCE: ISO 8421-1:1987, 1.23, modified — The words “set of measures such as” have been added to
the definition.]
3.7
fire suppression system
technical system to fight a fire (3.3) and to reduce the damaging effects of flames and heat
Note 1 to entry: Additional devices can be required to extinguish the fire.
3.8
ignition energy
energy necessary to initiate combustion
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SIST EN ISO 19353:2019
ISO 19353:2019(E)

3.9
low evaporation metalworking fluid
low-emission metalworking fluid
metalworking fluid composed of low-evaporation base media and anti-mist additives
Note 1 to entry: Low-evaporation base media are base oils consisting of low-evaporation mineral oils, synthetic
esters and/or special liquids.
3.10
overheating
uncontrolled temperature increase
3.11
pre-fire alarm system
pre-fire detection
system that detects conditions that can lead to the potential onset of fire (3.3) and initiates a response
Note 1 to entry: A response can be a trigger of an alarm signal or can initiate an automatic reaction.
Note 2 to entry: Sensors for these systems can detect heat due to friction, hot surfaces, loss of inerting, abnormal
changes of gas concentrations, failure of lubrication or cooling supply, etc.
Note 3 to entry: A fire alarm system is understood to be a system that, by the use of sensors, detects the onset of
fire and initiates a response. Sensors can be designed to detect smoke, combustion gases, heat or flames.
3.12
required performance level
PL
r
performance level (PL) applied in order to achieve the required risk reduction for each safety function
[SOURCE: ISO 13849-1:2015, 3.1.24, modified — Note 1 to entry has been deleted.]
3.13
self-ignition
spontaneous ignition resulting from self-heating
4 Fire hazards
4.1 General
A fire hazard occurs if combustible materials (fuel), oxidizer (oxygen) and ignition energy (heat) are
available in sufficient quantities at the same place and at the same time. A fire is an interaction of these
three components in the form of an uninhibited chemical reaction (see Figure 2).
A fire can be prevented or suppressed by controlling or removing one or more of the components of the
fire tetrahedron.
Certain materials are inherently unstable, extraordinary oxidizers or capable of self-heating. This
affects the fire hazard.
Variation in oxygen concentration (e.g. oxygen enrichment) can also affect the fire hazard.
The fire hazard can arise from the material processed, used or released by the machinery, from
materials in the vicinity of the machinery, or from materials used in the construction of the machinery.
NOTE An explosion hazard can exist in addition to the fire hazard.
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SIST EN ISO 19353:2019
ISO 19353:2019(E)

Key
1 heat 3 fuel
2 oxygen 4 uninhibited chemical chain reaction
Figure 2 — Fire tetrahedron
4.2 Combustible materials
It shall be determined whether combustible materials exist or can exist and in what quantity and
distribution. Combustible materials can occur as solids, liquids or gases.
The ease of combustion of materials is affected by the size, shape and deposition of the materials. For
example, small pieces of a material loosely collected together can be more easily ignited than a large
piece of that material. Also, the combination of materials can have an influence on the ignitability and
the burning behaviour.
Consideration shall be given as to whether the properties of the materials can change over time or with
use. Such changes can include the possibility of decomposition of the material releasing combustible
gases and vapours. This can lead to an increased fire hazard.
4.3 Oxidizers
In assessing the
...