Fixed firefighting systems - Components for sprinkler and water spray systems - Part 13: ESFR sprinklers

This document specifies requirements and test methods for early suppression and fast response (ESFR) sprinklers with a nominal discharge coefficient of 200 (pendent and upright), 240 (pendent and upright), 320 (pendent), 360 (pendent), 400 (pendent) and 480 (pendent) l/min/(bar)1/2.

Ortsfeste Brandbekämpfungsanlagen - Bauteile für Sprinkler- und Sprühwasseranlagen - Teil 13: ESFR-Sprinkler

Dieses Dokument legt Anforderungen und Prüfverfahren für früh unterdrückende schnell ansprechende (ESFR) Sprinkler (en: early suppression and fast response sprinklers) mit einem Nenndurchflusskoeffizienten von 200 l/min/(bar)1/2 (hängende und stehende Sprinkler), 240 l/min/(bar)1/2 (hängende und stehende Sprinkler), 320 l/min/(bar)1/2 (hängende Sprinkler), 360 l/min/(bar)1/2 (hängende Sprinkler), 400 l/min/(bar)1/2 (hängende Sprinkler) und 480 l/min/(bar)1/2 (hängende Sprinkler) fest.

Installations fixes de lutte contre l’incendie - Composants des systèmes d’extinction du type sprinkleur et à pulvérisation d’eau - Partie 13 : Sprinkleurs ESFR

Le présent document spécifie les exigences et les méthodes d’essai pour les sprinkleurs de suppression précoce à réponse rapide (ESFR) ayant un coefficient de décharge nominal de 200 l/min/(bar)1/2 (pendant et debout), 240 l/min/(bar)1/2 (pendant et debout), 320 l/min/(bar)1/2 (pendant), 360 l/min/(bar)1/2 (pendant), 400 l/min/(bar)1/2 (pendant) et 480 l/min/(bar)1/2 (pendant).

Vgrajene naprave za gašenje - Sestavni deli sprinklerskih sistemov in sistemov s pršečo vodo - 13. del: Sprinklerji ESFR

Ta dokument določa zahteve in preskusne metode za sprinklerje ESFR (early suppression fast response) z nazivnim koeficientom izpusta 200 (viseče in pokončne), 240 (viseče in pokončne), 320 (viseče), 360 (viseče), 400 (viseče) in 480 (viseče) l/min/(bar)1/2.

General Information

Status
Published
Publication Date
20-Dec-2022
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
21-Dec-2022
Due Date
13-Mar-2023
Completion Date
21-Dec-2022

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SLOVENSKI STANDARD
SIST EN 12259-13:2023
01-april-2023
Vgrajene naprave za gašenje - Sestavni deli sprinklerskih sistemov in sistemov s
pršečo vodo - 13. del: Sprinklerji ESFR
Fixed firefighting systems - Components for sprinkler and water spray systems - Part 13:
ESFR sprinklers
Ortsfeste Brandbekämpfungsanlagen - Bauteile für Sprinkler- und Sprühwasseranlagen -
Teil 13: ESFR-Sprinkler
Installations fixes de lutte contre l’incendie - Composants des systèmes d’extinction du
type sprinkleur et à pulvérisation d’eau - Partie 13 : Sprinkleurs ESFR
Ta slovenski standard je istoveten z: EN 12259-13:2022
ICS:
13.220.10 Gašenje požara Fire-fighting
SIST EN 12259-13:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 12259-13:2023

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SIST EN 12259-13:2023


EN 12259-13
EUROPEAN STANDARD

NORME EUROPÉENNE

December 2022
EUROPÄISCHE NORM
ICS 13.220.20
English Version

Fixed firefighting systems - Components for sprinkler and
water spray systems - Part 13: ESFR sprinklers
Installations fixes de lutte contre l'incendie - Ortsfeste Brandbekämpfungsanlagen - Bauteile für
Composants des systèmes d'extinction du type Sprinkler- und Sprühwasseranlagen - Teil 13: ESFR-
sprinkleur et à pulvérisation d'eau - Partie 13 : Sprinkler
Sprinkleurs ESFR
This European Standard was approved by CEN on 4 December 2022.

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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12259-13:2022 E
worldwide for CEN national Members.

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SIST EN 12259-13:2023
EN 12259-13:2022 (E)
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Assessment methods and criteria . 10
4.1 Connections . 10
4.1.1 Assessment method . 10
4.1.2 Criteria . 10
4.2 Leak resistance . 11
4.2.1 Assessment method . 11
4.2.2 Criteria . 11
4.3 Pneumatic leak resistance . 11
4.3.1 Assessment method . 11
4.3.2 Criteria . 11
4.4 Leakage resistance . 11
4.4.1 Assessment method . 11
4.4.2 Criteria . 11
4.5 Function . 11
4.5.1 Assessment method . 11
4.5.2 Criteria . 11
4.6 Operating temperatures . 11
4.6.1 Assessment method . 11
4.6.2 Criteria . 11
4.7 Complete operation . 12
4.7.1 Assessment method . 12
4.7.2 Criteria . 12
4.8 Size of water passageways . 12
4.8.1 Assessment method . 12
4.8.2 Criteria . 12
4.9 Nominal operating temperature . 12
4.9.1 Assessment method . 12
4.9.2 Criteria . 13
4.10 Distribution of extinguishing media . 13
4.10.1 Assessment method . 13
4.10.2 Criteria . 14
4.11 Actual delivered density . 14
4.11.1 Assessment method . 14
4.11.2 Criteria . 15
4.12 Extinguishing performance . 15
4.12.1 Assessment method . 15
4.12.2 Criteria . 15
4.13 Discharge coefficient . 16
4.13.1 Assessment method . 16
2

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SIST EN 12259-13:2023
EN 12259-13:2022 (E)
4.13.2 Criteria . 18
4.14 Thrust measurement . 18
4.14.1 Assessment method . 18
4.14.2 Criteria . 18
4.15 Response delay (response time) . 18
4.15.1 Assessment method . 18
4.15.2 Criteria . 19
4.16 Strength of sprinkler body and deflector. 19
4.16.1 Assessment method . 19
4.16.2 Criteria . 19
4.17 Strength of release element . 19
4.17.1 Assessment method . 19
4.17.2 Criteria . 19
4.18 Water hammer . 19
4.18.1 Assessment method . 19
4.18.2 Criteria . 19
4.19 Strength of deflector . 19
4.19.1 Assessment method . 19
4.19.2 Criteria . 20
4.20 Resistance to vibration . 20
4.20.1 Assessment method . 20
4.20.2 Criteria . 20
4.21 Resistance to impact . 21
4.21.1 Assessment method . 21
4.21.2 Criteria . 21
4.22 Resistance to low temperature . 21
4.22.1 Assessment method . 21
4.22.2 Criteria . 21
4.23 Vacuum . 21
4.23.1 Assessment method . 21
4.23.2 Criteria . 21
4.24 Heat exposure . 21
4.24.1 Assessment method . 21
4.24.2 Criteria . 21
4.25 Thermal shock of glass bulb sprinklers . 21
4.25.1 Assessment method . 21
4.25.2 Criteria . 22
4.26 Moist air . 22
4.26.1 Assessment method . 22
4.26.2 Criteria . 22
4.27 Corrosion . 22
4.27.1 Assessment method . 22
4.27.2 Criteria . 22
4.28 Product assembly . 22
4.29 Durability, resistance to thermal shock . 22
4.29.1 Assessment method . 22
4.29.2 Criteria . 22
5 Marking . 22
6 Manufacturer’s installation instructions . 23
Annex A (informative) Typical test setup for release under temperature test (liquid bath) 25
Annex B (normative) Pipe manifold configuration for lodgement . 26
3

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SIST EN 12259-13:2023
EN 12259-13:2022 (E)
Annex C (normative) Pendent sprinkler water distribution . 27
C.1 General. 27
C.2 Values for pendent sprinkler water distribution . 27
C.3 Test set-up . 29
Annex D (normative) Actual delivered density apparatus . 34
D.1 General. 34
D.2 Values for actual delivered density . 34
D.3 Test set-up . 36
D.4 Heptane burner settings . 38
Annex E (normative) Extinguishing performance . 39
E.1 General. 39
E.2 Values for performance under fire . 39
E.3 Fire test scenarios . 40
E.4 Test set-ups . 44
Annex F (normative) Thrust measurement . 59
F.1 General. 59
F.2 Values for thrust measurement . 59
F.3 Test set-up . 60
Annex G (normative) Sensitivity (response time index) . 61
G.1 General. 61
G.2 Test conditions . 61
G.3 Test set-up . 62
Annex H (normative) Tolerances . 63
Bibliography . 64

4

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SIST EN 12259-13:2023
EN 12259-13:2022 (E)
European foreword
This document (EN 12259-13:2022) 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 June 2023, and conflicting national standards shall be
withdrawn at the latest by June 2023.
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.
EN 12259, Fixed firefighting systems — Components for sprinkler and water spray systems, consists of the
following parts:
— Part 1: Sprinklers;
— Part 2: Wet alarm valve assemblies;
— Part 3: Dry alarm valve assemblies;
— Part 4: Water motor alarms;
— Part 5: Water flow detectors;
— Part 9: Deluge alarm valves;
— Part 12: Pumps;
— Part 13: ESFR sprinklers;
— Part 14: Sprinklers for residential applications.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, 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.
5

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SIST EN 12259-13:2023
EN 12259-13:2022 (E)
Introduction
The response characteristics of classic sprinklers (EN 12259-1 and EN 12259-15) is based on the
measurement of both sensitivity and conductivity (C-factor). For EN 12259-13 sprinkler type (ESFR)
their response characteristics are determined without reference to its conductivity.
6

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SIST EN 12259-13:2023
EN 12259-13:2022 (E)
1 Scope
This document specifies requirements and test methods for early suppression and fast response (ESFR)
sprinklers with a nominal discharge coefficient of 200 (pendent and upright), 240 (pendent and upright),
1/2
320 (pendent), 360 (pendent), 400 (pendent) and 480 (pendent) l/min/(bar) .
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.
1
EN 12259-1:1999+A1:2001 , Fixed firefighting systems — Components for sprinkler and water spray
systems — Sprinklers
EN 12845-2, Fixed firefighting systems — Automatic sprinkler systems — Part 2: Design and installation of
ESFR and CMSA sprinkler systems
ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances
and designation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12845 (all parts) and EN 12259
(all parts) and the following apply.
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
actual delivered density
ADD
measure of the rate at which water is actually deposited from an operating sprinkler type device(s) onto
the top horizontal surface of a burning combustible array
2
Note 1 to entry: ADD is expressed in l/min/m .
3.2
service load
measure of the force applied to the sprinkler frame due to assembly of the operating parts, plus the
equivalent force resulting from the maximum rated inlet pressure
3.3
conductivity
C-factor
measure of the conductance between the sprinkler's heat responsive element and the water filled fitting
1/2
Note 1 to entry: Conductivity is expressed in (m/s) .

1
As impacted by EN 12259-1:1999+A1:2001/A2:2004 and EN 12259-1:1999+A1:2001/A3:2006.
7

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SIST EN 12259-13:2023
EN 12259-13:2022 (E)
3.4
mean design service load
sprinkler manufacturer’s specified and assured highest mean load applied on the operating element at
the maximum rated inlet pressure
3.5
fusible link sprinkler
sprinkler which opens when an element provided for that purpose melts at a prescribed temperature
3.6
glass bulb sprinkler
sprinkler which opens when a liquid-filled glass bulb bursts at a prescribed temperature
3.7
lodgement
malfunction in the operation of a sprinkler which, when operated under a typical system water pressure,
experiences the hang-up of an operating part on, or between, the frame, deflector and/or compression
screw, adversely affecting the water distribution for a period in excess of ten seconds
Note 1 to entry: A momentary hesitation of an operating part to clear itself from temporary contact with the
frame, deflector and/or compression screw does not constitute a lodgement.
3.8
heat responsive element
component of a sprinkler assembly that, when subjected to the influence of heat, ruptures, bursts or
otherwise functions, causing water to be discharged through the sprinkler orifice
3.9
leak point
pressure at which there is leakage of water from the sprinkler in excess of one drop per minute
3.10
operating temperature
temperature in degrees at which the heat responsive element of a sprinkler operates when subjected to
a controlled rate-of-temperature-rise liquid bath
3.11
orientation ‘A’
plunge tunnel condition in which the sprinkler is situated such that the air flow is perpendicular to both
the waterway axis and the plane of the frame arms and the heat responsive element is upstream of the
frame arms
3.12
orientation ‘B’
plunge tunnel condition in which the sprinkler is situated such that the air flow is perpendicular to both
the waterway axis and the plane of the frame arms and the heat responsive element is downstream of the
frame arms
3.13
orientation ‘C’
plunge tunnel condition in which the sprinkler is situated such that the axis of the sprinkler inlet is
parallel to the air flow and the deflector faces and is perpendicular to the air flow
8

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SIST EN 12259-13:2023
EN 12259-13:2022 (E)
3.14
orifice
opening in a sprinkler body through which the water is discharged
3.15
pendent sprinkler
sprinkler in which the nozzle directs the water downwards
3.16
response time index
RTI
measure of the thermal sensitivity of the sprinkler
1/2
Note 1 to entry: RTI is expressed in (ms) .
3.17
service pressure
working hydrostatic pressure of a sprinkler system
3.18
strutting
partial fracture of a glass bulb or partial rupture of a fusible link heat responsive element which does not
result in sprinkler operation
3.19
upright sprinkler
sprinkler in which the nozzle directs the water upwards
3.20
weep point
leak point
pressure at which any visible leakage of water is detected
3.21
aisle jump
propagation of fire through radiant heat from the commodity immediately surrounding the ignition
location to the remote commodity which is separated from the main array by a 1,2 m aisle
3.22
standard cartoned expanded plastic test commodity
product consisting of expanded polystyrene plastic food service trays packaged in single-wall corrugated
cartons
Note 1 to entry: Each carton contains 200 plastic trays arranged in four stacks of 50 trays each with a density of
3
0,038 g/cm . Typical trays weigh approximately 15,25 g each, measure approximately 270 mm × 270 mm × 5 mm
thick and consists of expanded foam plastic. Each carton measures 530 mm × 530 mm × 510 mm, has a moisture
content of between 3,8 % and 7,4 % and weigh
...

SLOVENSKI STANDARD
oSIST prEN 12259-13:2022
01-februar-2022
Vgrajene naprave za gašenje - Sestavni deli sprinklerskih sistemov in sistemov s
pršečo vodo - 13. del: Sprinklerji ESFR
Fixed firefighting systems - Components for sprinkler and water spray systems - Part 13:
ESFR sprinklers
Ortsfeste Brandbekämpfungsanlagen - Bauteile für Sprinkler- und Sprühwasseranlagen -
Teil 13: ESFR-Sprinkler
Installations fixes de lutte contre l’incendie - Composants des systèmes d’extinction du
type sprinkleur et à pulvérisation d’eau - Partie 13 : Sprinkleurs ESFR
Ta slovenski standard je istoveten z: prEN 12259-13
ICS:
13.220.10 Gašenje požara Fire-fighting
oSIST prEN 12259-13:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 12259-13:2022

---------------------- Page: 2 ----------------------
oSIST prEN 12259-13:2022


DRAFT
EUROPEAN STANDARD
prEN 12259-13
NORME EUROPÉENNE

EUROPÄISCHE NORM

December 2021
ICS 13.220.20
English Version

Fixed firefighting systems - Components for sprinkler and
water spray systems - Part 13: ESFR sprinklers
Installations fixes de lutte contre l'incendie - Ortsfeste Brandbekämpfungsanlagen - Bauteile für
Composants des systèmes d'extinction du type Sprinkler- und Sprühwasseranlagen - Teil 13: ESFR-
sprinkleur et à pulvérisation d'eau - Partie 13 : Sprinkler
Sprinkleurs ESFR
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 191.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Turkey and
United Kingdom.

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 supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12259-13:2021 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
oSIST prEN 12259-13:2022
prEN 12259-13:2021 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Assessment methods and criteria . 9
4.1 Connections . 9
4.2 Hydrostatic strength and hydraulic leak resistance . 9
4.3 Pneumatic leak resistance . 9
4.4 Leakage resistance . 10
4.5 Release of the sprinkler at minimum operating pressure . 10
4.6 Release under temperature . 10
4.7 Complete operation . 11
4.8 Size of water passageways . 12
4.9 Sprinkler temperature identification . 12
4.10 Distribution of extinguishing media . 13
4.11 Actual delivered density . 14
4.12 Performance under fire . 15
4.13 Discharge coefficient . 16
4.14 Thrust measurement . 18
4.15 Sensitivity (Response time index) . 18
4.16 Frame strength . 19
4.17 Fusible link type . 21
4.18 Bulb type . 21
4.19 Water hammer . 24
4.20 Strength of deflector . 24
4.21 Vibration resistance . 24
4.22 Rough use and abuse . 25
4.23 Freezing . 26
4.24 Vacuum . 26
4.25 High ambient temperature exposure (90 day test) . 26
4.26 Thermal shock . 27
4.27 Moist air . 27
4.28 Salt spray . 27
4.29 Stress cracking for copper based parts . 28
4.30 Stress cracking for austenitic, ferritic, and duplex stainless-steel parts . 29
4.31 Sulphur dioxide and carbon dioxide corrosion . 29
4.32 Hydrogen sulphide corrosion . 30
Annex A (informative) Typical test setup for release under temperature test (liquid bath) . 32
Annex B (normative) Pipe manifold configuration for lodgement . 33
Annex C (normative) Pendent sprinkler water distribution. 34
C.1 General. 34
C.2 Values for pendent sprinkler water distribution . 34
2

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oSIST prEN 12259-13:2022
prEN 12259-13:2021 (E)
C.3 Test set-up . 36
Annex D (normative) Actual delivered density apparatus . 41
D.1 General . 41
D.2 Values for actual delivered density . 41
D.3 Test set-up . 44
D.4 Heptane burner settings . 46
Annex E (normative) Performance under fire . 47
E.1 General . 47
E.2 Values for performance under fire. 47
E.3 Fire test scenarios . 48
E.4 Test set-ups . 53
Annex F (normative) Thrust measurement . 69
F.1 General . 69
F.2 Values for thrust measurement . 69
F.3 Test set-up . 70
Annex G (normative) Sensitivity (response time index) . 71
G.1 General . 71
G.2 Test conditions . 71
G.3 Test set-up . 71
Annex H (normative) Tolerances . 73

3

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oSIST prEN 12259-13:2022
prEN 12259-13:2021 (E)

European foreword
This document (prEN 12259-13:2021) has been prepared by Technical Committee CEN/TC 191 “Fixed
firefighting systems”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
EN 12259, Fixed firefighting systems - Components for sprinkler and water spray systems, consists of the
following parts:
— Part 1: Sprinklers;
— Part 2: Wet alarm valve assemblies;
— Part 3: Dry alarm valve assemblies;
— Part 4: Water motor alarms;
— Part 5: Water flow detectors;
— Part 9: Deluge alarm valves;
— Part 12: Pumps;
— Part 13: ESFR sprinklers;
— Part 14: Sprinklers for residential applications.
4

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oSIST prEN 12259-13:2022
prEN 12259-13:2021 (E)
1 Scope
This document specifies requirements and test methods for early suppression and fast response (ESFR)
sprinklers with a nominal discharge coefficient of 200 (pendent and upright), 240 (pendent and upright),
1/2
320 (pendent), 360 (pendent), 400 (pendent) and 480 (pendent) l/min/(bar) .
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.
EN 12845, Fixed firefighting systems - Automatic sprinkler systems - Design, installation and maintenance
EN 12259, Fixed firefighting systems - Components for sprinkler and water spray systems
EN 60751, Industrial platinum resistance thermometers and platinum temperature sensors
ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances
and designation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12845, EN 12259 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
actual delivered density
ADD
measure of the rate at which water is actually deposited from an operating sprinkler type device(s) onto
the top horizontal surface of a burning combustible array
2
Note 1 to entry: ADD is expressed in l/min/m .
3.2
service load
measure of the force applied to the sprinkler frame due to assembly of the operating parts, plus the
equivalent force resulting from the maximum rated inlet pressure
3.3
conductivity
C-factor
measure of the conductance between the sprinkler's heat responsive element and the water filled fitting
1/2
Note 1 to entry: Conductivity is expressed in (m/s) .
5

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oSIST prEN 12259-13:2022
prEN 12259-13:2021 (E)

3.5
mean design service load
sprinkler manufacturer’s specified and assured highest mean load applied on the operating element at
the maximum rated inlet pressure
3.6
cartoned expanded plastic
commodity product consisting of expanded polystyrene plastic food service trays (or meat trays)
packaged in single-wall corrugated cartons
Note 1 to entry: Each carton contains 200 plastic trays arranged in four stacks of 50 trays each with a density of
3
0,038 g/cm . Typical trays weigh approximately 15,25 g each, measure approximately 270 mm × 270 mm × 5 mm
thick and consists of expanded foam plastic. Each carton measures 530 mm × 530 mm × 510 mm, shall have a
moisture content of between 3,8 % and 7,4 % and weigh 4 kg when filled with the plastic trays. Each pallet load
consists of eight cartons placed in a 2 × 2 × 2 array upon a 1 070 mm × 1 070 mm × 130 mm two-way, slatted deck
hardwood pallet. The pallet shall be minimum 90 % white, red or black oak, with an 8 % to 10 % moisture content.
3.7
standard plastic test commodity
product of cartoned, unexpanded, rigid crystalline, polystyrene jars
Note 1 to entry: Measuring 89 mm in diameter, 91,44 mm high and 1,42 mm thick (with a volume of 0,47 l), packaged
in compartmented, single wall, cardboard cartons measuring 530 mm × 530mm × 510 mm. Jars are arranged in five
layers, 25 per layer giving total of 125. Eight cartons are stacked two wide by two deep by two high; on a two-way,
slatted deck hardwood pallet measuring 1070 mm × 1 070 mm × 1 300 mm.
3.8
fusible link sprinkler
sprinkler which opens when an element provided for that purpose melts at a prescribed temperature
3.9
glass bulb sprinkler
sprinkler which opens when a liquid-filled glass bulb bursts at a prescribed temperature
3.10
lodgement
malfunction in the operation of a sprinkler which, when operated under a typical system water pressure,
experiences the hang-up of an operating part on, or between, the frame, deflector and/or compression
screw, adversely affecting the water distribution for a period in excess of ten seconds
Note 1 to entry: A momentary hesitation of an operating part to clear itself from temporary contact with the frame,
deflector and/or compression screw does not constitute a lodgement.
3.11
heat responsive element
component of a sprinkler assembly that, when subjected to the influence of heat, ruptures, bursts or
otherwise functions, causing water to be discharged through the sprinkler orifice
3.12
leak point
pressure at which there is leakage of water from the sprinkler in excess of one drop per minute
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3.14
operating temperature
temperature in degrees at which the heat responsive element of a sprinkler operates when subjected to
a controlled rate-of-temperature-rise liquid bath
3.15
orientation ‘A’
plunge tunnel condition in which the sprinkler is situated such that the air flow is perpendicular to both
the waterway axis and the plane of the frame arms and the heat responsive element is upstream of the
frame arms
3.16
orientation ‘B’
plunge tunnel condition in which the sprinkler is situated such that the air flow is perpendicular to both
the waterway axis and the plane of the frame arms and the heat responsive element is downstream of the
frame arms
3.17
orientation ‘C’
plunge tunnel condition in which the sprinkler is situated such that the axis of the sprinkler inlet is
parallel to the air flow and the deflector faces and is perpendicular to the air flow
3.18
orifice
opening in a sprinkler body through which the water is discharged
3.19
pendent sprinkler
sprinkler in which the nozzle directs the water downwards
3.20
response time index
RTI
measure of the thermal sensitivity of the sprinkler
1/2
Note 1 to entry: RTI is expressed in (ms) .
3.21
service pressure
working hydrostatic pressure of a sprinkler system
3.22
strutting
partial fracture of a glass bulb or partial rupture of a fusible link heat responsive element which does not
result in sprinkler operation
3.23
upright sprinkler
sprinkler in which the nozzle directs the water upwards
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3.24
weep point
leak point
pressure at which any visible leakage of water is detected
3.25
aisle jump
propagation of fire through radiant heat from the commodity immediately surrounding the ignition
location to the remote commodity which is separated from the main array by a 1,2 m aisle
3.26
cartoned expanded plastic commodity
commodity product consisting of expanded polystyrene plastic food service trays packaged in single-wall
corrugated cartons
Note 1 to entry: Each carton contains 200 plastic trays arranged in four stacks of 50 trays each. Typical trays weigh
approximately 15 g each, measure approximately 27 cm × 27 cm × 0,5 cm thick and consist of expanded foam plastic.
Each carton measures 53 cm × 53 cm × 51 cm and weighs 4,0 kg when filled with the plastic trays. Each pallet load
consists of eight cartons placed in a 2 ×2 × 2 array upon a 107 cm × 107 cm × 13 cm two-way, slatted deck hardwood
pallet.
3.27
cartoned unexpanded plastic commodity
commodity product of cartoned unexpanded plastic, consisting of rigid crystalline polystyrene jars
(empty, approximately 473 ml) packaged in compartmented, single wall, corrugated cartons measuring
53 cm × 53 cm × 51 cm
Note 1 to entry: Jars are arranged in five layers, 25 per layer for a total of 125. Each pallet load consists of eight
cartons, arranged in a 2 × 2 × 2 array upon a 107 cm × 107 cm × 13 cm two-way, slatted deck hardwood pallet.
3.28
mean bulb strength
glass bulb mean bulb strength for any batch of 55 or more bulbs
3.29
mean design bulb strength
glass bulb manufacturer’s specified and assured lowest mean bulb strength for any batch of 55 or more
bulbs
3.30
design lower tolerance limit
DLTL
glass bulb manufacturer’s specified and assured lowest lower tolerance limit
3.31
lower tolerance limit
LTL
glass bulb lowest strength determined by test and statistical analysis of a batch of 55 or more bulbs
3.32
design upper tolerance limit
DUTL
sprinkler manufacturer’s specified and assured highest upper tolerance limit
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3.33
upper tolerance limit
UTL
highest service load determined by test and statistical analysis of a batch of 5 or more sprinklers
4 Assessment methods and criteria
4.1 Connections
4.1.1 Assessment method
The sprinkler connection, e.g. the thread size shall be assessed by measurements.
4.1.2 Criteria
The thread connections of the sprinkler shall be in accordance with ISO 7-1 or shall be grooved
connections. Alternative connection methods that have been tested and validated for use in fire sprinkler
systems also fulfil 4.1.2.
4.2 Hydrostatic strength and hydraulic leak resistance
4.2.1 Assessment method
Subject the sprinklers to water pressure of (30 ± 1) bar at the inlet. Increase the pressure from 0 to
+1
(30 ± 1) bar at a rate not exceeding 1 bar/s, maintain the pressure at (30 ± 1) bar for a period of 3 min
0
and then allow it to fall to 0 bar. After the pressure has dropped to 0 bar, increase it to (0,5 ± 0,1) bar in
+5
not more than 5 s. Maintain this pressure for 15 s, and then increase it to (10 ± 0,5) bar at a rate not
0
+5
exceeding 1 bar/s and maintain it for 15 s. Examine the sprinkler for evidence of leakage during the test.
0
After testing, each sample shall be further subjected to a gradually increasing hydrostatic pressure to
48,3 bar ± 3 % at a rate not to exceed 20,7 bar ± 3 % per second. The test pressure shall be maintained
+0,1
for 1 min. If leakage at the orifice prevents testing at 48,2 bar ± 3 %, the maximum attainable test
0
+0,1
1
pressure shall be maintained for min. Leakage at the orifice above a hydrostatic pressure of 34,5 bar
0
± 3 % shall be deemed acceptable.
4.2.2 Criteria
No visible hydraulic leakage at 30 bar for a period of 3 min and no rupture with an internal hydrostatic
pressure of up to 48,3 bar for a period of 1 min.
4.3 Pneumatic leak resistance
4.3.1 Assessment method
+0,1
Four previously untested sprinklers shall be individually conditioned at (-29 ± 6) °C for 24 h. Each
0
sample shall then be pneumatically pressurized to 2,1 ± 0,1 bar, immersed in glycol liquid conditioned to
+0,1
(-29 ± 6) °C and observed for 5 min.
0
4.3.2 Criteria
No visible pneumatic leakage.
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4.4 Leakage resistance
4.4.1 Assessment method
Five previously untested samples shall be hydrostatically tested to confirm that there are no weep or leak
points at, or below, 34,5 bar ± 3 %. The samples shall then be installed on a water-filled test apparatus
which is to be maintained at ambient temperature and at a constant pressure of 20,7 bar ± 3 % for
+0,25
30 days. The samples shall be visually examined weekly during the test period for evidence of leakage
0
at the seal.
4.4.2 Criteria
No visible leakage at 20,7 bar for a period of 30 days and no evidence of distortion or physical damage.
4.5 Release of the sprinkler at minimum operating pressure
4.5.1 Assessment method
Ten previously untested sprinklers shall be installed in their intended orientation, subjected to an inlet
water pressure of 0,35 bar ± 3 % and operated using a suitable heat source. If a sample does not operate
fully as described above, the pressure shall be slowly increased to determine the actual minimum
operating pressure.
4.5.2 Criteria
All parts which are intended to prohibit the discharge or leakage of water have cleared the exit of the
+5
waterway within 5 s.
0
4.6 Release under temperature
4.6.1 Assessment method
4.6.1.1 Apparatus
Laboratory temperature measuring device having an accuracy of ± 0,25 % of the nominal rating,
calibrated to a depth of 40 mm immersion, for determining temperatures of liquids in bath tests and
operating temperatures. The thermally sensitive part of the sensor (e.g. bulb of a thermometer) shall be
held level with the centre of the sprinkler operating parts (fusible element). To control the temperature
in the thermal bath, a PT100 sensor in accordance to EN 60751 shall be used.
For sprinklers with a nominal operating temperature less than or equal to 80 °C a liquid bath of
demineralized water shall be used. For sprinklers with higher rated elements a liquid bath of glycerine,
vegetable oil or synthetic oil shall be used.
NOTE An example of a typical bath is given in Figure A.1.
4.6.1.2 Procedure
A total of 10 sprinklers is to be tested. Heat sprinklers in a liquid bath from a temperature of (20 ± 5) °C
to an intermediate temperature of 11,1 ± 1,1°C below their nominal operating temperature. The rate of
+2
+1
temperature increase shall not exceed 20 °C per minute. Maintain the intermediate temperature for
10
0
0
min. Then increase the temperature at a rate of (0,5 ± 0,1) °C per minute until the sprinklers operate or
up to 2,0 °C above the upper operating limit.
Determine the nominal operating temperature with temperature measuring device having an accuracy
of ± 0,25 % of the nominal temperature rating.
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The sprinklers shall be located in the vertical position and totally covered by the liquid to a depth of at
least 5 mm. The geometric centre of the fusible element shall be located not less than 35 mm below the
liquid surface and in alignment with the temperature sensing device. The temperature deviation within
the test zone should be within 0,25 °C.
The preferred location of the geometric centre of the fusible element and temperature measuring device
should be (40 ± 5) mm below the liquid surface.
If strutting occurs during the test the air bath test (see 4.6.1.3) shall be performed.
4.6.1.3 Air bath test
Fifty previously untested sprinklers shall be placed on their threaded inlets in a programmable oven
circulating air at ambient temperature. The temperature in the oven shall be steadily raised to
+0,1
11,1 ± 1,1°C below the nominal temperature rating of the sprinklers over a 20 minute period. Once
0
this temperature is reached, the oven shall be maintained at constant temperature for a period of
60 ± 5 min. The temperature shall then be raised at a constant rate of 0,5 ± 0,3 °C per minute until the
temperature reaches 22 ± 2,8 °C above the nominal temperature rating of the sprinklers.
4.6.2 Criteria
Full rupture of heat responsive element in liquid bath (see 4.6.1.2) within a temperature range of
t ± (0,035 t +0,62)] °C, where ‘t’ is the nominal operating temperature, resulting in sprinkler operation.
When subjected to the air bath test no partial fracture of a glass bulb or no partial rupture of a fusible link
(i.e. strutting) shall occur.
4.7 Complete operation
4.7.1 Assessment method
Samples shall be selected in accordance with Table 1 and shall be individually installed in their intended
installation position, on a pipe manifold as shown in Annex B. Each sample shall be subjected to an inlet
water pressure in accordance with 4.7.2, operated using a suitable open flame heat source, and observed
for complete and proper functioning. A total of 80 sprinklers shall be tested.
Five samples shall be tested at each pressure with the pipe manifold configured for double
...

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