SIST EN 13565-2:2018+AC:2019/kFprA1:2026
(Amendment)Fixed firefighting systems - Foam systems - Part 2: Design, construction and maintenance
Fixed firefighting systems - Foam systems - Part 2: Design, construction and maintenance
This document specifies the requirements and describes the methods for design, installation, testing and maintenance of low, medium, and high expansion foam fire extinguishing systems.
Foam systems may be used to suppress the release of toxic vapours but this application is outside the scope of this document.
This document provides guidance for the design of various foam systems available to persons with knowledge and experience in determining the selection of foam fire extinguishing systems which will be effective in protecting specific hazard configurations. For the application of this standard, a risk assessment by a qualified and experienced person should be performed for both new and existing systems, however the risk assessment is outside the scope of this document.
This document does not cover a risk analysis carried out by a competent person.
Nothing in this document is intended to restrict new technologies or alternative arrangements, provided that the level of foam system performance prescribed in this standard is not lowered, and supported by documented evidence/test reports.
All foam systems are generally unsuitable for the following:
- chemicals, such as cellulose nitrate, that release sufficient oxygen or other oxidizing agents which can sustain combustion;
- energized unenclosed electrical equipment;
- metals such as sodium, potassium and sodium-potassium alloys which are reactive to water;
- hazardous, water-reactive materials such as triethyl-aluminium and phosphorous pentoxide;
- combustible metals such as aluminium and magnesium.
Ortsfeste Brandbekämpfungsanlagen - Schaumlöschanlagen - Teil 2: Planung, Einbau und Wartung
Installations fixes de lutte contre l’incendie - Systèmes à émulseurs - Partie 2 : Calcul, installation et maintenance - Amendement 1
Vgrajeni gasilni sistemi - Sistemi za gašenje s peno - 2. del: Načrtovanje, izvedba in vzdrževanje - Dopolnilo A1
General Information
- Status
- Not Published
- Public Enquiry End Date
- 30-Mar-2025
- Technical Committee
- POZ - Požarna varnost
- Current Stage
- 5020 - Formal vote (FV) (Adopted Project)
- Start Date
- 13-Mar-2026
- Due Date
- 01-May-2026
- Completion Date
- 16-Mar-2026
Relations
- Effective Date
- 12-Apr-2023
Overview
SIST EN 13565-2:2018+AC:2019/kFprA1:2026 is a European standard published by CEN that sets out the requirements and guidance for the design, construction, installation, and ongoing maintenance of fixed foam firefighting systems. These systems use low, medium, or high expansion foam to suppress fires and protect property and people in environments where flammable liquids or significant fire risks exist. This standard offers a critical framework to ensure foam fire extinguishing systems function reliably and efficiently across various industries and hazard types.
The document specifically addresses the criteria for system performance, including the calculation of application rates and the adaptation of design to different foam types, such as non-fluorinated foam concentrates. While suppression of toxic vapours and comprehensive risk assessment processes are referenced, they are outside the stated scope and should be addressed separately.
Key Topics
System Design and Construction
- Guidance on designing foam extinguishing systems for specific hazards
- Requirements for low, medium, and high expansion foam applications
- Compatibility of components and testing procedures
Installation and Testing
- Methods for proper system installation
- Testing protocols for system performance, focusing on correct foam application rates and integration with other fire protection measures
Ongoing Maintenance
- Maintenance schedules and requirements to ensure ongoing compliance and reliability
- Guidance on periodic inspection and testing
Foam Type Considerations
- Non-fluorinated (F3) vs. traditional foam concentrates
- Specific test procedures and design considerations for different foam chemistries
System Limitations
- Identification of materials and scenarios where foam systems are unsuitable, including:
- Chemicals that release oxygen or oxidizing agents (e.g., cellulose nitrate)
- Live unenclosed electrical equipment
- Reactive or combustible metals such as sodium, potassium, aluminium, and magnesium
- Hazardous, water-reactive materials
- Identification of materials and scenarios where foam systems are unsuitable, including:
Allowances for Innovation
- Use of new technologies and alternative arrangements, provided equivalent system performance is demonstrated by documented evidence or test reports
Applications
Foam firefighting systems designed according to EN 13565-2 are essential for a wide range of high-risk facilities, including:
Industrial plants and warehouses
- Facilities with significant volumes of flammable liquids or hazardous chemicals
- Storage and handling areas for petrochemicals and solvents
Aircraft hangars
- Protection against fuel fires, including guidance for large-scale coverage and specific operating times
Process and manufacturing areas
- Situations where swift and comprehensive fire suppression is critical to prevent escalation
Tank farms and bunded storage areas
- Environments where containment of flammable liquid spills and prevention of vapour release is essential
High-density rack storage and recycling plants
- Locations with unique risks due to material types or storage configurations
By ensuring systematic design and diligent maintenance, organizations can mitigate fire risks, protect life and property, and comply with regulatory requirements.
Related Standards
To achieve full compliance and optimal safety, SIST EN 13565-2:2018+AC:2019/kFprA1:2026 is often used in conjunction with the following standards and guidelines:
- EN 1568 Series: Fire extinguishing media - Foam concentrates (guidance on foam performance, including non-fluorinated agents)
- UL 162, FM 5130, and VdS 3896: International test standards for foam fire-extinguishing systems performance evaluation
- ISO 14520 series: Requirements for other fixed fire suppression systems (e.g., gaseous systems)
- EN 12845: Automatic sprinkler systems - Design and installation
- National fire and building codes: Local regulations may impose additional requirements or reference this standard
Adhering to EN 13565-2 ensures that fixed foam firefighting installations are robust, effective, and in line with European best practices for fire protection.
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Frequently Asked Questions
SIST EN 13565-2:2018+AC:2019/kFprA1:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Fixed firefighting systems - Foam systems - Part 2: Design, construction and maintenance". This standard covers: This document specifies the requirements and describes the methods for design, installation, testing and maintenance of low, medium, and high expansion foam fire extinguishing systems. Foam systems may be used to suppress the release of toxic vapours but this application is outside the scope of this document. This document provides guidance for the design of various foam systems available to persons with knowledge and experience in determining the selection of foam fire extinguishing systems which will be effective in protecting specific hazard configurations. For the application of this standard, a risk assessment by a qualified and experienced person should be performed for both new and existing systems, however the risk assessment is outside the scope of this document. This document does not cover a risk analysis carried out by a competent person. Nothing in this document is intended to restrict new technologies or alternative arrangements, provided that the level of foam system performance prescribed in this standard is not lowered, and supported by documented evidence/test reports. All foam systems are generally unsuitable for the following: - chemicals, such as cellulose nitrate, that release sufficient oxygen or other oxidizing agents which can sustain combustion; - energized unenclosed electrical equipment; - metals such as sodium, potassium and sodium-potassium alloys which are reactive to water; - hazardous, water-reactive materials such as triethyl-aluminium and phosphorous pentoxide; - combustible metals such as aluminium and magnesium.
This document specifies the requirements and describes the methods for design, installation, testing and maintenance of low, medium, and high expansion foam fire extinguishing systems. Foam systems may be used to suppress the release of toxic vapours but this application is outside the scope of this document. This document provides guidance for the design of various foam systems available to persons with knowledge and experience in determining the selection of foam fire extinguishing systems which will be effective in protecting specific hazard configurations. For the application of this standard, a risk assessment by a qualified and experienced person should be performed for both new and existing systems, however the risk assessment is outside the scope of this document. This document does not cover a risk analysis carried out by a competent person. Nothing in this document is intended to restrict new technologies or alternative arrangements, provided that the level of foam system performance prescribed in this standard is not lowered, and supported by documented evidence/test reports. All foam systems are generally unsuitable for the following: - chemicals, such as cellulose nitrate, that release sufficient oxygen or other oxidizing agents which can sustain combustion; - energized unenclosed electrical equipment; - metals such as sodium, potassium and sodium-potassium alloys which are reactive to water; - hazardous, water-reactive materials such as triethyl-aluminium and phosphorous pentoxide; - combustible metals such as aluminium and magnesium.
SIST EN 13565-2:2018+AC:2019/kFprA1:2026 is classified under the following ICS (International Classification for Standards) categories: 13.220.10 - Fire-fighting; 13.220.20 - Fire protection. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 13565-2:2018+AC:2019/kFprA1:2026 has the following relationships with other standards: It is inter standard links to SIST EN 13565-2:2018+AC:2019. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 13565-2:2018+AC:2019/kFprA1:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13565-2:2018+AC:2019/oprA1:2025
01-marec-2025
Vgrajeni gasilni sistemi - Sistemi za gašenje s peno - 2. del: Načrtovanje, izvedba
in vzdrževanje - Dopolnilo A1
Fixed firefighting systems - Foam systems - Part 2: Design, construction and
maintenance
Ortsfeste Brandbekämpfungsanlagen - Schaumlöschanlagen - Teil 2: Planung, Einbau
und Wartung
Installations fixes de lutte contre l’incendie - Systèmes à émulseurs - Partie 2 : Calcul,
installation et maintenance - Amendement 1
Ta slovenski standard je istoveten z: EN 13565-2:2018+AC:2019/prA1
ICS:
13.220.10 Gašenje požara Fire-fighting
SIST EN 13565- en,fr,de
2:2018+AC:2019/oprA1:2025
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
SIST EN 13565-2:2018+AC:2019/oprA1:2025
SIST EN 13565-2:2018+AC:2019/oprA1:2025
DRAFT
EUROPEAN STANDARD
EN 13565-2:2018+AC:2019
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
January 2025
ICS 13.220.20
English Version
Fixed firefighting systems - Foam systems - Part 2: Design,
construction and maintenance
Installations fixes de lutte contre l'incendie - Systèmes Ortsfeste Brandbekämpfungsanlagen -
à émulseurs - Partie 2 : Calcul, installation et Schaumlöschanlagen - Teil 2: Planung, Einbau und
maintenance Wartung
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 A1, if approved, will modify the European Standard EN 13565-2:2018+AC: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 NORMALISATIO N
EUROPÄISCHES KOMITEE FÜR NORMUN G
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 13565-2:2018+AC:2019/prA1:2025
worldwide for CEN national Members. E
SIST EN 13565-2:2018+AC:2019/oprA1:2025
EN 13565-2:2018+AC:2019/prA1:2025 (E)
Contents Page
European foreword . 3
1 Modifications to subclause 4.1.2, “Application rates” . 4
2 Replacement of Table 8, “Correction factors f – Other hazards with operating times (t)” 5
o
3 Replacement of Table 10, “Foam application and correction factors (f ) for aircraft
o
hangars with operating times (t)”. 7
SIST EN 13565-2:2018+AC:2019/oprA1:2025
EN 13565-2:2018+AC:2019/prA1:2025 (E)
European foreword
This document (EN 13565-2:2018+AC:2019/prA1:2025) 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.
SIST EN 13565-2:2018+AC:2019/oprA1:2025
EN 13565-2:2018+AC:2019/prA1:2025 (E)
1 Modifications to subclause 4.1.2, “Application rates”
Add the following below Formula (1) and renumber the subsequent formulae:
“Where non-fluorinated foam concentrate (“F3” according to EN 1568-3 and EN 1568-4) is to be used the
application rates for low and medium expansion foam shall be calculated as follows:
q = qdr x fo x fh (2)
where
q design rate (see design rates non-fluorinated foams, Tables 3 and 5)”
dr
Add the following below Table 2:
“Design rates non-fluorinated foams
Where non-fluorinated foam concentrate is to be used for flammable liquid protection in:
1) closed head sprinklers and open sprayers (air-aspirating or non-air-aspirating type) these shall be
tested in combination with the specific foam solution to protect the risk. VdS 3896 (2022)
paragraphs 5.3.1, UL 162 (2022) paragraph 11 or FM 5130 (May 2021) paragraph 4.22 test
procedures shall be used to prove the system's performance. For systems designed using test data
from UL 162 the design rate shall be 60% higher than used in the test, while for VdS 3896 and FM
5130 the design rate shall equal that used in the test. Design rates can be taken from VdS certificate
or UL/FM listing.
NOTE 1 For a given foam generating device F3 foam agents can respond to changing pressure with a
reduction of foam quality in both directions of pressure change.
2) all other discharge devices than 1) shall be tested in combination with the specific foam solution to
protect the risk. The expansion ratio of the foam discharge device shall be same or higher than used
in the fire test. An appropriate test procedure can be found in UL 162 (2022) paragraph 12 or FM
5130 where Table 3 shall be applied to define the design rate q . The design rates q can be taken
dr dr
...
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