Fixed firefighting systems - Water mist systems - Part 11: Test protocol for cable tunnels for open nozzle systems

This document specifies fire testing requirements for water mist systems used for fire protection of cable tunnels. The test protocol covers deluge water mist systems with open nozzles which are either activated with an automatic release system, e.g. fire detection system, or manually released.

Ortsfeste Brandbekämpfungsanlagen - Wassernebelsysteme - Teil 11: Prüfprotokoll für Kabeltunnel für offene Düsensysteme

Dieses Dokument legt Anforderungen an Brandversuche für Wassernebelsysteme fest, die für den Brandschutz von Kabeltunneln verwendet werden. Das Prüfprotokoll deckt Sprüh-Wassernebelsysteme mit offenen Düsen, die entweder durch ein automatisches Auslösesystem, z. B. eine Brandmeldeanlage, oder von Hand ausgelöst werden, ab.

Installations fixes de lutte contre l'incendie - Systèmes à brouillard d'eau - Partie 11 : Protocole d'essai des systèmes à buses ouvertes pour galeries de câbles

Le présent document spécifie les exigences en matière d'essais au feu pour les systèmes à brouillard d'eau utilisés pour la protection contre l'incendie des galeries de câbles. Le protocole d'essai couvre les systèmes à brouillard d'eau de type déluge, avec buses ouvertes, qui sont soit déclenchés au moyen d'un système à activation automatique (par exemple, système de détection d'incendie), soit déclenchés manuellement.

Vgrajeni gasilni sistemi - Sistemi s pršečo vodo - 11. del: Protokol preskušanja sistemov z odprtimi šobami za kabelske hodnike

Ta dokument določa zahteve požarnega preskušanja za sisteme s pršečo vodo, ki se uporabljajo za požarno zaščito kabelskih kanalov. Preskusni protokol zajema poplavne sisteme s pršečo vodo z odprtimi šobami, ki jih sproži sistem samodejne sprožitve, npr. sistem za odkrivanje in javljanje požara, ali pa se sprožijo ročno.

General Information

Status
Published
Publication Date
23-May-2023
ICS
13.220.20 - Fire protection
Technical Committee
CEN/TC 191 - Fixed firefighting systems
Drafting Committee
CEN/TC 191/WG 10 - Water mist systems
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
24-May-2023
Due Date
04-Oct-2023
Completion Date
24-May-2023
Ref Project
SIST EN 14972-11:2023 - Fixed firefighting systems - Water mist systems - Part 11: Test protocol for cable tunnels for open nozzle systems

Overview

EN 14972-11:2023 is a European standard developed by CEN that specifies the fire testing requirements for fixed firefighting water mist systems used in cable tunnels. This standard focuses on deluge water mist systems with open nozzles, which can be activated either through an automatic release mechanism, such as a fire detection system, or manually. The protocol establishes rigorous test methods to ensure the effectiveness and reliability of these water mist systems in protecting cable tunnels against fire hazards.

This standard forms part 11 of the broader EN 14972 series on fixed firefighting water mist systems, guiding manufacturers, installers, and testing laboratories in designing, installing, inspecting, maintaining, and validating water mist fire suppression solutions specifically tailored to cable tunnel environments.

Key Topics

  • Scope of Application
    EN 14972-11 details the test protocols for water mist systems protecting cable tunnels, emphasizing the use of open nozzle deluge systems. The tests ensure that systems reliably control cable tunnel fires when triggered automatically or manually.

  • Test Setup and Fuel Package
    The test assembly comprises a realistic cable tunnel enclosure, including non-combustible walls, cable trays of specific dimensions, and a standardized fire load made of different cable types. A propane burner simulates the ignition source, and ventilation is controlled to replicate forced longitudinal airflow of approximately 1 m/s.

  • System Performance Requirements
    Fire tests must be conducted under manufacturer-specified conditions including nozzle positioning, water flow, and pressure. The system should maintain water discharge for 15 minutes after activation, effectively suppressing the fire with minimal residual flames and smouldering.

  • Instrumentation and Criteria
    Testing involves precise temperature, pressure, and airflow measurements to assess fire suppression performance. Pass/fail criteria emphasize fire control and damage limitation, ensuring only small, localized flamelets remain post-test without smouldering.

  • Documentation and Consistency
    A detailed test report documenting all test parameters, results, and adherence to system specifications is required. Component configurations and environmental conditions must remain consistent throughout testing.

Applications

EN 14972-11:2023 is critically relevant for:

  • Fire protection of cable tunnels in public infrastructure such as underground transit systems, data centers, power utilities, and communication lines.
  • Manufacturers and designers of fixed water mist firefighting systems aiming to certify products according to European standards for cable tunnel safety.
  • Testing laboratories performing standardized fire suppression efficacy assessments.
  • Building owners and safety engineers assessing or implementing effective fire protection systems to mitigate cable fire risks.
  • Enhancing fire safety compliance and ensuring regulatory alignment for installed water mist systems in tunnel environments.

Related Standards

The EN 14972 series provides a comprehensive framework for water mist firefighting systems across various applications:

  • EN 14972-1:2020 – Design, installation, inspection, and maintenance of water mist systems.
  • Other parts of EN 14972 cover test protocols for:
    • Shopping areas (Part 2)
    • Office, school classrooms, hotels (Part 3)
    • Car garages (Part 5)
    • Machinery in enclosures (Parts 8 and 9), and many more focused on automatic and open nozzle systems in diverse environments.

Additionally, EN 14972-11 references:

  • EN 13501-1:2018 for fire classification of construction products ensuring tunnel enclosures and cable trays meet non-combustible material criteria.

Together, this family of standards supports holistic development, testing, and maintenance of high-performance water mist fire protection technologies in compliance with European safety norms.

Keywords: EN 14972-11:2023, water mist systems, fixed firefighting systems, cable tunnel fire protection, fire test protocol, open nozzle water mist, fire suppression testing, deluge water mist, fire safety standards, CEN firefighting standards, cable fire load, test arrangement, fire detection system, manual activation, fire protection for cable tunnels.

Frequently Asked Questions

EN 14972-11:2023 is a standard published by the European Committee for Standardization (CEN). Its full title is "Fixed firefighting systems - Water mist systems - Part 11: Test protocol for cable tunnels for open nozzle systems". This standard covers: This document specifies fire testing requirements for water mist systems used for fire protection of cable tunnels. The test protocol covers deluge water mist systems with open nozzles which are either activated with an automatic release system, e.g. fire detection system, or manually released.

This document specifies fire testing requirements for water mist systems used for fire protection of cable tunnels. The test protocol covers deluge water mist systems with open nozzles which are either activated with an automatic release system, e.g. fire detection system, or manually released.

EN 14972-11:2023 is classified under the following ICS (International Classification for Standards) categories: 13.220.20 - Fire protection. The ICS classification helps identify the subject area and facilitates finding related standards.

You can purchase EN 14972-11:2023 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.

Standards Content (Sample)


SLOVENSKI STANDARD
01-september-2023
Vgrajeni gasilni sistemi - Sistemi s pršečo vodo - 11. del: Protokol preskušanja
sistemov z odprtimi šobami za kabelske hodnike
Fixed firefighting systems - Water mist systems - Part 11: Test protocol for cable tunnels
for open nozzle systems
Ortsfeste Brandbekämpfungsanlagen - Wassernebelsysteme - Teil 11: Prüfprotokoll für
Kabeltunnel für offene Düsensysteme
Installations fixes de lutte contre l'incendie - Systèmes à brouillard d'eau - Partie 11 :
Protocole d'essai des systèmes à buses ouvertes pour galeries de câbles
Ta slovenski standard je istoveten z: EN 14972-11:2023
ICS:
13.220.10 Gašenje požara Fire-fighting
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 14972-11
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2023
EUROPÄISCHE NORM
ICS 13.220.20
English Version
Fixed firefighting systems - Water mist systems - Part 11:
Test protocol for cable tunnels for open nozzle systems
Installations fixes de lutte contre l'incendie - Systèmes Ortsfeste Brandbekämpfungsanlagen -
à brouillard d'eau - Partie 11 : Protocole d'essai des Wassernebelsysteme - Teil 11: Prüfprotokoll für
systèmes à buses ouvertes pour galeries de câbles Kabeltunnel für offene Düsensysteme
This European Standard was approved by CEN on 17 April 2023.

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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14972-11:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General requirements . 5
5 Fuel packages . 6
5.1 General . 6
5.2 Tunnel enclosure . 7
5.3 Cable tray arrangement . 8
5.4 Cable fire load . 8
5.5 Conditioning of fire load . 9
5.6 Ignition source . 9
5.7 Ventilation conditions . 9
6 Test arrangement . 9
7 Test equipment requirements . 9
8 Instrumentation requirements .10
8.1 General .10
8.2 Temperature .10
8.3 Air velocity .10
8.4 Pressure .11
8.5 Time .11
9 Test criteria .11
9.1 General .11
9.2 Carrying out the test with automatic release system .12
9.3 Carrying out the test without automatic release system (manual release system) .12
9.4 Pass/fail criteria .12
10 Test report .12

European foreword
This document (EN 14972-11:2023) 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 November 2023, and conflicting national standards shall
be withdrawn at the latest by November 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.
The EN 14972 series, published under the general title Fixed firefighting systems — Water mist systems,
consists of the following parts. This list includes standards that are in preparation, and other standards
can be added. For the current status of published standards, refer to www.cencenelec.eu.
— Part 1: Design, installation, inspection and maintenance;
— Part 2: Test protocol for shopping areas for automatic nozzle systems;
— Part 3: Test protocol for office, school classrooms and hotel for automatic nozzle systems;
— Part 4: Test protocol for non-storage occupancies for automatic nozzle systems;
— Part 5: Test protocol for car garages for automatic nozzle systems;
— Part 6: Test protocol for false floors and false ceilings for automatic nozzle systems;
— Part 7: Test protocol for commercial low hazard occupancies for automatic nozzle systems;
— Part 8: Test protocol for machinery in enclosures exceeding 260 m for open nozzle systems;
— Part 9: Test protocol for machinery in enclosures not exceeding 260 m for open nozzle systems;
— Part 10: Test protocol for atrium protection with sidewall nozzles for open nozzle systems;
— Part 11: Test protocol for cable tunnels for open nozzle systems;
— Part 12: Test protocol for commercial deep fat cooking fryers for open nozzle systems;
— Part 13: Test protocol for wet benches and other similar processing equipment for open nozzle systems;
— Part 14: Test protocol for combustion turbines in enclosures exceeding 260 m for open nozzle systems;
— Part 15: Test protocol for combustion turbines in enclosures not exceeding 260 m for open nozzle
systems;
— Part 16: Test protocol for industrial oil cookers for open nozzle systems;
— Part 17: Test protocol for residential occupancies for automatic nozzle systems.
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.
1 Scope
This document specifies fire testing requirements for water mist systems used for fire protection of cable
tunnels. The test protocol covers deluge water mist systems with open nozzles which are either activated
with an automatic release system, e.g. fire detection system, or manually released.
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 13501-1:2018, Fire classification of construction products and building elements - Part 1: Classification
using data from reaction to fire tests
EN 14972-1:2020, Fixed firefighting systems - Water mist systems – Part 1: Design, installation, inspection
and maintenance
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 14972-1 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/
4 General requirements
4.1 Up to a maximum of 5 nozzles used in the fire tests shall be kept for later verification.
4.2 The water mist system, operating without manual intervention, shall successfully complete all
described performance fire tests.
4.3 The fire load shall be taken from the conditioning area and arranged into the test area just before
conducting the test.
4.4 The water flow shall be shut-off 15 min after the activation. After turning off the system, no more
than small localized flamelets on a single tray and no smouldering are allowed and the fire damages shall
be recorded.
4.5 Prior to the testing, a layout of the water mist system to be teste
...

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Le document SIST EN 14972-11:2023 établit des exigences de test incendie pour les systèmes de brume d'eau utilisés pour la protection incendie des tunnels de câbles. Ce protocole de test est essentiel pour garantir que les systèmes de brume d'eau à buses ouvertes, qu'ils soient activés automatiquement par un système de détection d'incendie ou manuellement, répondent aux normes de sécurité et d'efficacité. L'un des points forts de cette norme est sa capacité à réguler spécifiquement les conditions de test pour les systèmes de brume d'eau. En détaillant les exigences pour les systèmes de déluge en relation avec la protection des tunnels de câbles, cette norme fournit une base solide pour l'intégration de ces systèmes dans des infrastructures critiques, où la sécurité incendie est primordiale. De plus, la présence d’un protocole explicite permettant des tests sous différentes conditions renforce la crédibilité des systèmes in situ. La pertinence de cette norme EN 14972-11:2023 réside également dans son application croissante en réponse aux exigences de sécurité moderne. Avec la montée des enjeux liés à la protection des infrastructures électriques et aux risques d'incendie, ce document devient un outil incontournable pour les concepteurs, les ingénieurs et les responsables de la sécurité. L’adoption de protocoles normalisés tels que ceux décrits dans cette norme n’est pas seulement une exigence réglementaire, mais également une pratique recommandée pour une gestion efficace des risques incendie dans les tunnels de câbles. En résumé, le SIST EN 14972-11:2023 joue un rôle crucial dans l'évolution des systèmes de protection incendie, en proposant un cadre de test précis et en garantissant la fiabilité des systèmes de brume d'eau dans des situations critiques. Sa mise en œuvre contribuera à l'amélioration des standards de sécurité dans les infrastructures modernes.

SIST EN 14972-11:2023 표준은 케이블 터널의 화재 보호를 위한 워터 미스트 시스템에 대한 시험 요구 사항을 규정하고 있습니다. 이 문서는 자동 릴리스 시스템(예: 화재 감지 시스템)에 의해 작동되거나 수동으로 릴리스되는 개방형 노즐의 델루지 워터 미스트 시스템에 초점을 맞추고 있습니다. 표준의 강점은 케이블 터널에서의 화재 안전성을 확보하기 위해 필요한 구체적이고 명확한 시험 프로토콜을 제공한다는 점입니다. 특히, 개방형 노즐 시스템에 적합한 시험 방법을 제시하여 실제 적용 가능성을 높이고 있습니다. 이러한 명확한 지침은 관련 산업에서 화재 방지에 대한 일관된 기준을 마련하는 데 기여할 것입니다. 또한, 이 표준은 글로벌 베스트 프랙티스를 반영하고 있어, 다양한 환경과 조건에서도 안전성을 보장할 수 있는 유연성을 가지고 있습니다. 워터 미스트 시스템의 채택이 증가하고 있는 현재, EN 14972-11:2023 표준은 현대 화재 안전 기술의 발전에 적합하며, 해당 시스템의 효과적인 운영을 위한 필수적인 기준을 제공합니다. 따라서, 이 표준은 케이블 터널의 화재 보호를 위한 실효성 있는 접근 방식을 제공하며, 관련 업계의 요구에 부응하는 중요한 문서로 자리잡고 있습니다.

The standard EN 14972-11:2023 provides a comprehensive test protocol for fixed firefighting systems specifically focusing on water mist systems designed to protect cable tunnels. This document plays a critical role in the standardization of fire protection measures in environments that pose unique challenges, such as cable tunnels where the risk of fire can have serious implications for safety and operational integrity. One of the key strengths of this standard is its specific focus on deluge water mist systems with open nozzles. This detail ensures that the protocol meets the unique needs of facilities that utilize such systems. By outlining the necessary testing requirements, this standard sets clear criteria for evaluating the effectiveness of water mist systems, which is vital for ensuring high safety standards in fire-prone areas. Additionally, the EN 14972-11:2023 accommodates both automatically activated systems, triggered by fire detection mechanisms, and manually released systems. This flexibility reflects the diverse applications and operational setups found in various cable tunnel environments, ensuring that the standard can be implemented widely and effectively across different facilities. The relevance of this standard cannot be overstated, especially as the industry increasingly recognizes the importance of specialized firefighting systems. By focusing on the specific needs and conditions of cable tunnels, the standard supports enhanced safety measures and contributes to a coordinated approach in fire protection practices. Overall, the EN 14972-11:2023 stands as a vital document in the field of fire safety, providing essential guidelines that reinforce the reliability and efficacy of water mist systems in protecting against the catastrophic effects of fire in cable tunnel contexts.

Die Norm EN 14972-11:2023 bietet einen umfassenden Rahmen für die Prüfung von Wassernebelanlagen, die für den Brandschutz in Kabeltunneln konzipiert sind. Der Umfang der Norm ist klar definiert und konzentriert sich auf die Anforderungen an Brandschutzprüfungen für verschiedene Wassernebelanlagen, insbesondere solche mit offenen Düsen. Diese Systeme können sowohl durch automatische Auslösemechanismen, wie Brandmeldesysteme, als auch durch manuelle Betätigung aktiviert werden. Ein herausragendes Merkmal dieser Norm ist die detaillierte Darstellung des Testprotokolls, das sicherstellt, dass die Wassernebelanlagen in Kabeltunneln unter realistischen Bedingungen getestet werden. Dies gewährleistet die Zuverlässigkeit und Effizienz der Systeme im Ernstfall, was für die Sicherheit in Bereichen mit hohem Kabelaufkommen von größter Bedeutung ist. Die Stärken der EN 14972-11:2023 liegen in der gründlichen Analyse und klaren Definition der Testanforderungen, die es den Herstellern ermöglichen, ihre Produkte entsprechend zu zertifizieren und den Bestimmungen gerecht zu werden. Durch diese Standardisierung wird nicht nur die Qualität der Wassernebelanlagen verbessert, sondern auch ein einheitliches Sicherheitsniveau gewährleistet, das für Betreiber und Nutzer von Kabeltunneln entscheidend ist. Darüber hinaus bleibt die Norm relevant, da sie sich an aktuelle technische Entwicklungen anpasst und die Bedeutung von Brandschutz in Kabeltunneln in den Fokus rückt. Dies zeigt das wachsende Bewusstsein für Sicherheitsrisiken in infrastrukturellen Systemen und unterstreicht die Notwendigkeit, effektive Brandschutzlösungen wie Wassernebeltechnologien zu standardisieren. Insgesamt unterstützt die EN 14972-11:2023 die Weiterentwicklung der Wassernebeltechnologie im Bereich des Brandschutzes und stellt sicher, dass diese Systeme zuverlässig und effizient in ihren Anwendungsbereichen eingesetzt werden können.

標準SIST EN 14972-11:2023は、ケーブルトンネルの火災保護に使用される水霧システムに関する試験プロトコルを提供しています。この文書は、オープンノズルシステムを搭載したデルージ水霧システムに特化しており、火災検知システムなどの自動放出システム、または手動で解除されるシステムによって作動されるものを対象としています。 この標準の強みは、具体的な試験要件を明確に定めている点です。水霧システムの優れた性能を保証するため、厳密な試験が規定されているため、信頼性の高い火災防護手段を確立することができます。また、様々な環境下での評価を考慮しているため、実際の使用条件に即した実践的な試験方法が示されています。 範囲においては、特にケーブルトンネルという特殊な施設における火災防護への適用が強調されています。この焦点を当てることで、従来の消火システムではカバーしきれないニーズに応えることができます。さらに、火災が発生する前に迅速な反応を促進する設計になっているため、事前の安全対策としての重要性が際立っています。 総じて、SIST EN 14972-11:2023は、水霧システムの火災保護に関する明確なガイドラインを提供し、業界全体における標準化を推進する重要な文書です。