SIST EN 12845:2015+A1:2020/oprA2:2025
(Amendment)Fixed firefighting systems - Automatic sprinkler systems - Design, installation and maintenance
Fixed firefighting systems - Automatic sprinkler systems - Design, installation and maintenance
Ortsfeste Brandbekämpfungsanlagen - Automatische Sprinkleranlagen - Planung, Installation und Instandhaltung
This European Standard specifies requirements and gives recommendations for the design, installation and maintenance of fixed fire sprinkler systems in buildings and industrial plants, and particular requirements for sprinkler systems that are integral to measures for the protection of life.
This European Standard covers only the types of sprinkler specified in EN 12259 1 (see Annex L).
The requirements and recommendations of this European Standard are also applicable to any addition, extension, repair or other modification to a sprinkler system. They are not applicable to water spray or deluge systems.
It covers the classification of hazards, provision of water supplies, components to be used, installation and testing of the system, maintenance, and the extension of existing systems, and identifies construction details of buildings which are the minimum necessary for satisfactory performance of sprinkler systems complying with this European Standard.
This European Standard does not cover water supplies to systems other than sprinklers. Its requirements can be used as guidance for other fixed firefighting extinguishing systems, provided that any specific requirements for other firefighting extinguishing supplies are taken into account.
This European Standard is intended for use by those concerned with purchasing, designing, installing, testing, inspecting, approving, operating and maintaining automatic sprinkler systems, in order that such equipment will function as intended throughout its life.
This European Standard is intended only for fixed fire sprinkler systems in buildings and other premises on land. Although the general principles might well apply to other uses (e.g. maritime use). For these other uses additional considerations should be taken into account.
The requirements are not valid for automatic sprinkler systems on ships, in aircraft, on vehicles and mobile fire appliances or for below ground systems in the mining industry.
Sprinkler system design deviations might be allowed when such deviations have been shown to provide a level of protection at least equivalent to this European Standard, for example by means of full-scale fire testing where appropriate, and where the design criteria have been fully documented.
Installations fixes de lutte contre l'incendie - Systèmes d'extinction automatique du type sprinkleur - Conception, installation et maintenance
Vgrajene naprave za gašenje - Avtomatski sprinklerski sistemi - Projektiranje, vgradnja in vzdrževanje
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2025
Vgrajene naprave za gašenje - Avtomatski sprinklerski sistemi - Projektiranje,
vgradnja in vzdrževanje
Fixed firefighting systems - Automatic sprinkler systems - Design, installation and
maintenance
Ortsfeste Brandbekämpfungsanlagen - Automatische Sprinkleranlagen - Planung,
Installation und Instandhaltung
Installations fixes de lutte contre l'incendie - Systèmes d'extinction automatique du type
sprinkleur - Conception, installation et maintenance
Ta slovenski standard je istoveten z: EN 12845:2015+A1:2019/prA2
ICS:
13.220.10 Gašenje požara Fire-fighting
SIST EN en,fr,de
12845:2015+A1:2020/oprA2:2025
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
EN 12845:2015+A1:2019
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA2
August 2025
ICS 13.220.20
English Version
Fixed firefighting systems - Automatic sprinkler systems -
Design, installation and maintenance
Installations fixes de lutte contre l'incendie - Systèmes Ortsfeste Brandbekämpfungsanlagen - Automatische
d'extinction automatique du type sprinkleur - Sprinkleranlagen - Planung, Installation und
Conception, installation et maintenance Instandhaltung
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 191.
This draft amendment A2, if approved, will modify the European Standard EN 12845:2015+A1:2019. If this draft becomes an
amendment, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
inclusion of this amendment into the relevant national standard without any alteration.
This draft amendment 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, Türkiye 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12845:2015+A1:2019/prA2:2025 E
worldwide for CEN national Members.
EN 12845:2015+A1 2019/prA2:2025 (E)
Contents Page
European foreword . 4
1 Modification to the European foreword . 5
2 Modification to 4.4.4.4 “Automatic pump set” . 5
3 Modification to 8.5.1 “General” . 5
4 Modification to 8.5.2 “At pump house” . 5
5 Modification to 8.5.3 “At control valve sets” . 5
6 Modification to 8.6.2 “Storage tank and pressure tank supplies” . 5
7 Modification to 8.6.3 “Town main, booster pump, elevated private reservoir and
gravity tank supplies” . 5
8 Modification to 9.3.4 “Reduced capacity tanks” . 5
9 Modification to 9.3.6 “Strainers” . 5
10 Modification to 9.4.1, Table 13 “Nominal diameter of feed pipes or conduits for
settling and suction chambers” . 5
11 Modification to 9.4.2 . 6
12 Modification to 9.4.4 . 6
13 Modification to 9.4.7 . 6
14 Modification to Clause 10 “Pumps” . 6
15 Modification to 10.1. “General” . 6
16 Modification to 10.2. “Multiple pump arrangements” . 6
17 Modification to 10.4. “Maximum temperature of water supply” . 6
18 Modification to 10.6.1 “General” . 6
19 Modification to 10.6.2 “Suction pipe “ . 6
20 Modification to 10.6.2.1 “General” . 6
21 Modification to 10.6.2.2 “Positive head “ . 7
22 Modification to 10.6.2.3 “Suction lift” . 7
23 Modification to 10.6.2.4 “Pump priming” . 7
24 Modification to 10.6.2.5 “Pressure maintenance pump” . 7
25 Modification to Clause 10.7 “Performance characteristics” . 7
26 Modification to 10.7.1 “Pre-calculated systems – LH and OH” . 7
27 Modification to 10.7.2 “Pre-calculated systems – HHP and HHS with no in-rack
sprinklers” . 7
28 Modification to 10.7.3 “Calculated systems” . 7
29 Modification to 10.7.5.2 “Pump start” . 8
30 Modification to 10.7.5.3 “Testing the pressure switches” . 8
EN 12845:2015+A1 2019/prA2:2025 (E)
31 Modification to 10.8.1.2 . 8
32 Modification to 10.8.1.3 . 8
33 Modification to 10.8.2 “Electricity supply” . 8
34 Modification to 10.8.3.1 . 8
35 Modification to 10.8.3.2 . 8
36 Modification to 10.8.4 “Installation between the main switchboard and the pump
controller” . 8
37 Modification to 10.8.5 “Pump controller” . 9
38 Modification to 10.8.6 “Monitoring of pump operation” . 9
39 Modification to 10.8.6.3 and 10.8.6.4 . 9
40 Modification to 10.9.1 “General” . 9
41 Modification to 10.9.2 to 10.9.10 . 9
42 Modification to 10.9.11 . 9
43 Modification to 10.9.12 . 9
44 Modification to 10.9.13 “Engine tests and exercising” . 9
45 Modification to 13.1 “General” . 10
46 Modification to 15.5.1 “Alarm and pump start test valves” . 10
47 Modification to 15.7.2 “Water supply connections” . 10
48 Modification to 18.2.5.2 “Fully calculated installations” . 10
49 Modification to 18.2.6.2 “Diesel pump set” . 10
50 Modification to 18.2.6.3 “Electric motor driven fire pump” . 10
51 Modification to 20.2.2.4 “Automatic pump starting test” . 10
52 Modification to 20.2.2.5 “Diesel engine restarting test” . 10
53 Modification to 20.3.4.2.1 “Automatic pump flow test” . 11
54 Modification to 20.3.4.5 “Pump suction chambers and strainers” . 11
55 Modification to Annex E.3.4 “Pump performance for pre-calculated installations” . 11
56 Modification to Annex H.2.6 “Electrical power” . 11
57 Modification to Annex I.2 “Alarm levels” . 11
58 Modification to Annex J.1 “Minimizing the effects” . 11
59 Modification to Annex N “Control Mode Specific Application Sprinklers: CMSA” . 11
60 Modification to Annex P “ESFR sprinkler protection “ . 12
EN 12845:2015+A1 2019/prA2:2025 (E)
European foreword
This document (EN 12845:2015+A1:2019/prA2:2025) 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 12845:2015+A1 2019/prA2:2025 (E)
1 Modification to the European foreword
Add the following paragraph to the European foreword:
“In comparison with EN 12845:2015+A1:2019, technical modifications have been made to integrate
references and usage of EN 17451, EN 12845-2 and EN 12845-3 into this document.”
2 Modification to 4.4.4.4 “Automatic pump set”
Replace the whole clause with:
“Pump set documentation in accordance with EN 17451 shall be provided.”
3 Modification to 8.5.1 “General”
In d), line 5, insert “set” after “pump”.
nd
In f), 2 paragraph, replace “or pumps” with “set(s)”.
4 Modification to 8.5.2 “At pump house”
st
At the end of the 1 sentence, insert “or pump set” after “water supply”.
5 Modification to 8.5.3 “At control valve sets”
st
In the 1 sentence, replace “or pumps” with “set(s)”.
6 Modification to 8.6.2 “Storage tank and pressure tank supplies”
nd
Replace the 2 sentence with:
“Automatic pump set starting shall be checked by dropping the system pressure.”
7 Modification to 8.6.3 “Town main, booster pump, elevated private reservoir
and gravity tank supplies”
nd
Replace the 2 sentence with:
“Automatic pump set starting shall be checked by dropping the system pressure”.
8 Modification to 9.3.4 “Reduced capacity tanks”
nd
In 9.3.4 a) in the 2 sentence, insert “set” after “pump”.
9 Modification to 9.3.6 “Strainers”
st
In the 1 sentence, replace “pumps” with “pump sets”.
10 Modification to 9.4.1, Table 13 “Nominal diameter of feed pipes or conduits for
settling and suction chambers”
nd
Replace the heading of the 2 column with:
“Maximum flow of pump set (Q )”.
max
EN 12845:2015+A1 2019/prA2:2025 (E)
rd 0,357
In the 3 row, replace “Q0,357” with “Q ”.
11 Modification to 9.4.2
In the last sentence, insert “set” after “pump”.
12 Modification to 9.4.4
st
In the 1 sentence, insert “set” after “pump”.
13 Modification to 9.4.7
st
In the 1 sentence, insert “set” after “pump”.
14 Modification to Clause 10 “Pumps”
Change the heading to:
“Pumps and pump sets”.
15 Modification to 10.1. “General”
Replace the whole clause with:
“Water supplies consisting of pumps shall conform to EN 17451.”
16 Modification to 10.2. “Multiple pump arrangements”
Change the heading to:
“Multiple pump set arrangements”.
st
Replace the 1 word “Pumps” with “Pump sets”.
17 Modification to 10.4. “Maximum temperature o
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.