SIST EN 15276-2:2019

SLOVENSKI STANDARD
SIST EN 15276-2:2019
01-maj-2019
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SIST-TP CEN/TR 15276-2:2009
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Fixed firefighting systems - Condensed aerosol extinguishing systems - Part 2: Design,
installation and maintenance
Ortsfeste Brandbekämpfungsanlagen - Löschanlagen für kondensierte Aerosole - Teil 2:
Planung, Installation und Instandhaltung
Installations fixes de lutte contre l'incendie - Systèmes d'extinction à aérosol - Partie 2:
Calcul, installation et maintenance
Ta slovenski standard je istoveten z: EN 15276-2:2019
ICS:
13.220.10 Gašenje požara Fire-fighting
SIST EN 15276-2:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 15276-2:2019

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SIST EN 15276-2:2019


EN 15276-2
EUROPEAN STANDARD

NORME EUROPÉENNE

March 2019
EUROPÄISCHE NORM
ICS 13.220.20 Supersedes CEN/TR 15276-2:2009
English Version

Fixed firefighting systems - Condensed aerosol
extinguishing systems - Part 2: Design, installation and
maintenance
Installations fixes de lutte contre l'incendie - Systèmes Ortsfeste Brandbekämpfungsanlagen - Löschanlagen
d'extinction à aérosol - Partie 2 : Calcul, installation et für kondensierte Aerosole - Teil 2: Planung, Installation
maintenance und Instandhaltung
This European Standard was approved by CEN on 6 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 15276-2:2019 E
worldwide for CEN national Members.

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SIST EN 15276-2:2019
EN 15276-2:2019 (E)
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Use and limitations . 11
4.1 General . 11
4.2 Extinguishants . 11
4.2.1 General . 11
4.2.2 Extinguishing mechanism . 12
4.3 Potentially explosive atmosphere . 12
4.4 Temperature limitations . 12
5 Safety . 12
5.1 Hazard to personnel . 12
5.2 Safety precautions . 13
5.2.1 General . 13
5.2.2 Unoccupiable areas . 15
5.2.3 Installer’s responsibility . 15
5.2.4 User’s responsibility . 15
5.3 Electrical hazards . 16
5.3.1 General . 16
5.3.2 Electrical earthing . 17
5.3.3 Electrostatic discharge . 17
6 System design . 17
6.1 General . 17
6.2 Specifications, plans and approvals . 18
6.3 Enclosures . 18
6.3.1 Protected enclosure . 18
6.3.2 Openings . 18
6.3.3 Unclosable openings . 18
6.3.4 Ventilation and services . 19
6.3.5 Venting requirements . 19
6.4 Design application density requirements . 19
6.5 Design application density adjustment . 20
6.5.1 Effects of ventilation . 20
6.5.2 Compensation for Leakage through enclosure openings . 20
6.6 Design application density . 20
6.7 Unit size and quantity of aerosol generators . 21
6.7.1 Aerosol generator size selection . 21
6.7.2 Quantity of aerosol generator . 22
6.8 Hold time . 22
6.9 System discharge . 23
6.9.1 Discharge time . 23
6.9.2 Extended discharge . 23
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EN 15276-2:2019 (E)
6.10 Plans . 23
7 System installation . 24
7.1 General . 24
7.2 Aerosol generator arrangement . 24
7.3 Operating conditions . 24
7.4 Installation recommendations . 25
7.5 System operation . 25
7.5.1 General . 25
7.5.2 Automatic operation . 25
7.5.3 Manual operation . 25
7.5.4 System isolate switch . 25
8 Detection, alarm and control systems . 26
8.1 General . 26
8.2 Automatic detection . 26
8.2.1 General . 26
8.2.2 Type/system tests for specific applications . 26
8.3 Operating devices . 28
8.3.1 General . 28
8.3.2 Automatic operation . 28
8.3.3 Manual operation . 28
8.4 Control equipment . 29
8.4.1 Electric control equipment . 29
8.4.2 Pneumatic control equipment . 29
8.4.3 Operating alarms and indicators . 29
8.4.4 Time delay device . 29
8.4.5 Control and indicating equipment . 30
9 Commissioning and acceptance . 30
9.1 General . 30
9.2 Tests . 30
9.2.1 General . 30
9.2.2 Enclosure check . 30
9.2.3 Review of mechanical components of condensed aerosol generators . 31
9.2.4 Review of enclosure integrity . 31
9.2.5 Review of electrical components . 31
9.2.6 Preliminary functional tests . 32
9.2.7 System functional operational test . 33
9.2.8 Remote monitoring operations (if applicable) . 33
9.2.9 Control panel primary power source . 33
9.3 Completion of functional tests . 33
9.4 Completion statement and documentation . 33
10 Inspection . 33
10.1 General . 33
10.1.1 Enclosures . 34
11 Maintenance . 34
11.1 General . 34
11.2 User’s programme of inspection . 35
11.3 Service schedule . 35
12 Training . 35
Annex A (normative) Working documents . 36
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EN 15276-2:2019 (E)
A.1 General . 36
A.2 Working documents . 36
Annex B (informative) Toxicity Tests . 37
Bibliography . 38

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SIST EN 15276-2:2019
EN 15276-2:2019 (E)
European foreword
This document (EN 15276-2:2019) has been prepared by Technical Committee CEN/TC 191 “Fixed
firefighting systems”, 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 September 2019, and conflicting national standards
shall be withdrawn at the latest by September 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 CEN/TR 15276-2:2009.
In comparison with the previous edition CEN/TR 15276-2:2009, the following technical modifications
have been made:
— the Technical Report CEN/TR 15276-2:2009 has been revised and published as a standard;
— Normative references have been updated;
— Clause 3 "Terms and definitions" has been revised;
— Clause 4 "Use and limitations" has been revised;
— Clause 5 "Safety" has been revised;
— Clause 6 "System design" has been revised;
— 7.5.4 "System isolate switch" has been revised;
— Clause 8 "Detection, alarm and control systems" has been revised;
— Clause 9 "Commissioning and acceptance" has been revised;
— Clause 10 "Inspection" has been revised;
— Annex B "Toxicity Tests" has been added;
— the standard has been editorially revised.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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.
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EN 15276-2:2019 (E)
Introduction
It has been assumed in the preparation of this document that the execution of its provisions is entrusted
to appropriately qualified and experienced people in the specification, design, installation, testing,
inspection, operation and maintenance of systems and equipment, for whose guidance it has been
prepared, and who can be expected to exercise a duty of care to avoid unnecessary release of
extinguishant.
Firefighting systems covered in this document are designed to provide a supply of fixed condensed
aerosol extinguishing medium to extinguish fire.
The requirements of this document are made in the light of the best technical data known at the time of
writing but, since a wide field is covered, it has been impracticable to consider every possible factor or
circumstance that might affect implementation of the requirements.
It is important that the fire protection of a building or plant is considered as a whole. Aerosol
extinguishant systems form only a part of the available facilities, but it should not be assumed that their
adoption necessarily removes the need to consider supplementary measures, such as the provision of
portable fire extinguishers or other mobile appliances for first aid or emergency use, or to deal with
special hazards.
Small scale fire tests, comparable with the test methods mentioned in this standard, indicate that
aerosol extinguishants can be recognized as effective media for the extinction of certain Class A fires
(solid surface burning fires) and Class B and Class C fires according to EN 2, but it should not be
forgotten, in the planning of comprehensive schemes, that there can be hazards for which these
mediums are not suitable, or that in certain circumstances or situations there can be dangers in their
use requiring special precautions.
Advice on these matters can be obtained from the appropriate manufacturer of the aerosol generators
or the extinguishing system. Information can also be sought from the appropriate fire authority, the
health and safety authorities and insurers. In addition, reference should be made as necessary to other
standards and statutory regulations.
It is essential that firefighting equipment, the enclosure and the protected occupancy is carefully
maintained and managed to ensure instant readiness when required and effectiveness of the protection.
Condensed aerosol can contain traces of toxic substances like those produced by a fire, and will obscure
vision like smoke from fire.
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SIST EN 15276-2:2019
EN 15276-2:2019 (E)
1 Scope
This document specifies requirements and methods for the design, installation and maintenance of
condensed aerosol extinguishing systems and the characteristics of the extinguishing media and types
of fire for which it is a suitable extinguishing medium.
This document covers the use of condensed aerosol extinguishing systems for total flooding
applications.
This document is not applicable to explosion suppression applications.
This document does not cover all legislative requirements. In certain countries specific national
regulations apply and take precedence over this document. Users of this document are advised to
inform themselves of the applicability or non-applicability for this document by their national
responsible authorities.
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.
CEN/TS 54-14, Fire detection and fire alarm systems — Part 14: Guidelines for planning, design,
installation, commissioning, use and maintenance
EN 15004-1:2019, Fixed firefighting systems — Gas extinguishing systems — Part 1: Design, installation
and maintenance (ISO 14520-1:2015, modified)
EN 15276-1:2019, Fixed firefighting systems — Condensed aerosol extinguishing systems — Part 1:
Requirements and test methods for components
EN 12094-1:2003, Fixed firefighting systems — Components for gas extinguishing systems — Part 1:
Requirements and test methods for electrical automatic control and delay devices
EN 12094-2, Fixed firefighting systems — Components for gas extinguishing systems — Part 2:
Requirements and test methods for non-electrical automatic control and delay devices
EN 12094-3, Fixed firefighting systems — Components for gas extinguishing systems — Part 3:
Requirements and test methods for manual triggering and stop devices
EN 12094-12, Fixed firefighting systems — Components for gas extinguishing systems — Part 12:
Requirements and test methods for pneumatic alarm devices
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 15276-1 and the following
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
activation mechanism
automatic or manual activation leading to the physical discharge of extinguishant
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EN 15276-2:2019 (E)
3.2
automatic
performing a function without the necessity of intentional human intervention
3.3
automatic switch
manual switch
means of converting the system from automatic to manual activation
3.4
clearance
3.4.1
electrical clearance
unobstructed air distance between the aerosol generator components and unenclosed or uninsulated
live electrical components not at ground potential
3.4.2
thermal clearance
air distance between a condensed aerosol generator and any structure or components sensitive to the
temperature developed by the generator
3.5
competent person
designated person, suitably trained, qualified by knowledge and practical experience and with the
necessary instructions to enable the required tests and examinations to be carried out
3.6
condensed aerosol
extinguishing medium consisting of finely divided solid particles and gaseous matter, these being
generated by a combustion process of a solid aerosol forming compound
3.7
condensed aerosol generator
non-pressurized device which, when activated, generates an aerosol and includes the mounting
brackets
3.8
control device
device which is able to control the sequence of events leading to the activation
3.9
coolant
heat absorbing medium or process
3.10
design application density
extinguishing density multiplied by the safety factor, required for system design purposes
Note 1 to entry: The design application density is expressed in grams per cubic metre.
Note 2 to entry: Extinguishing density and design application density have been introduced as an alternative to
extinguishing concentration and design concentration respectively as concentration of the actual aerosol cannot
be measured or even assessed in some cases (the discharged medium, apart from the condensed aerosol, can
contain products of the thermal decomposition of a chemical coolant).
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3.11
design quantity
mass of solid aerosol-forming composition necessary to achieve the design application density in the
maximum protected volume of a specific risk
Note 1 to entry: The design quantity is expressed in grams.
3.12
discharge time
time from the generator activation to the end of its discharge
3.13
emergency hold device
device that prevents the electrical actuation of aerosol generators
3.14
extinguishing density
effective minimum mass of discharged extinguishant per unit of enclosure volume required to
extinguish fire involving specific fuel under defined experimental conditions
3
Note 1 to entry: Measured in g/m .
Note 2 to entry: Based upon the test using one or more specific aerosol generator(s) and excluding the safety
factor and including the efficiency of the generators
3.15
family of condensed generators
range of generators designed with the same solid compound, the same kind of cooling device, discharge
outlet, ignition device, layout and internal or external architecture with varying mass of solid compound
3.16
holding time
period of time during which an extinguishant is required to maintain at least the extinguishing density
to maintain even distribution throughout protected volume
3.17
hot work
grinding, welding, thermal or oxygen cutting or heating and other related heat-producing or spark-
producing operations
3.18
ignition device
any device which is intended to ignite the solid ae
...