CEN/TS 14816:2008

SLOVENSKI STANDARD
01-marec-2009
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Fixed firefighting systems - Water spray systems - Design, installation and maintenance
Ortsfeste Brandbekämpfungsanlagen - Sprühwasserlöschanlagen - Planung, Einbau und
Wartung
Ta slovenski standard je istoveten z: CEN/TS 14816:2008
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 14816
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
November 2008
ICS 13.220.20
English Version
Fixed firefighting systems - Water spray systems - Design,
installation and maintenance
Installations fixes de lutte contre l'incendie - Systèmes Ortsfeste Brandbekämpfungsanlagen -
d'extinction à pulvérisation d'eau - Conception, installation Sprühwasserlöschanlagen - Planung, Einbau und Wartung
et maintenance
This Technical Specification (CEN/TS) was approved by CEN on 9 September 2008 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 14816:2008: E
worldwide for CEN national Members.

Contents Page
Foreword . 3
Introduction . 4
1 Scope. 5
2 Normative references . 5
3 Terms and definitions. 6
4 Operating condition of water spray systems . 7
4.1 Operation in the open air. 7
4.2 Fire resisting compartments. 7
4.3 Protection against frost. 8
5 Fire hazards and system design. 8
5.1 General . 8
5.2 Protection of various hazards. 8
5.3 Protection of flammable liquids with medium and high velocity water spray systems . 12
5.4 Spray systems with additives for the protection of flammable liquids. 17
6 Simultaneous operation of water spray installations. 17
6.1 Deluge installations . 17
6.2 Multiple control installations . 18
7 Special considerations for water spray systems. 18
7.1 General . 18
7.2 Suitability of water sources . 19
7.3 Choice of water supply. 19
7.4 Water volume. 19
7.5 Valves . 19
7.6 Pipe work . 20
7.7 Alarms and alarm devices. 20
7.8 Commissioning test. 20
8 System activation. 21
8.1 General . 21
8.2 Electrical detection systems. 21
8.3 Pneumatic or hydraulic activation. 21
8.4 Manual release. 21
8.5 Multiple controls. 21
9 Sprayer design characteristics and uses .21
9.1 General . 21
9.2 Sprayer characteristics . 22
9.3 Flow from sprayers . 22
Annex A (informative) Exposure protection . 23
A.1 General . 23
A.2 System design and installation . 23
Bibliography . 29

Foreword
This document (CEN/TS 14816:2008) has been prepared by Technical Committee CEN/TC 191 “Fixed
firefighting systems”, the secretariat of which is held by BSI.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
It is included in a series of European standards planned to cover:
- automatic sprinkler systems (EN 12259, EN 12845),
- gas extinguishing systems (EN 12094),
- powder systems (EN 12416),
- explosion protection systems (EN 26184),
- foam systems (EN 13565),
- hydrant and hose reel systems (EN 671),
- smoke and heat control systems (EN 12101).
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.
Introduction
Water spray systems can be suitable, in some instances, for extinguishment of fire and in others for
prevention of fire spread, and may be independent of or supplementary to other forms of fire protection.
A water spray system consists of a water supply (or supplies) and one or more sprayers usually open; each
system consists of a control valve set and a pipe array fitted with sprayers.
The design of specific systems may vary considerably, depending on the nature of the hazard and the
basic purposes of protection. Because of these variations and the wide choice in the characteristics of
sprayers, it is assumed that these systems are competently designed, installed and maintained. It is
essential that their limitations as well as their capabilities be thoroughly understood by the designer.
It should not be assumed that the provision of a water spray system entirely obviates the need for other
means of fighting fires and it is important to consider the fire precautions in the premises as a whole.
Special measurement may also be required, for example bounding flammable liquid risks or the protection
drain of flammable liquids spillage.
Structural fire resistance, escape routes, fire alarm systems, particular hazards needing other fire
protection methods, provision of hose reels, fire hydrants and fire extinguishers, etc., safe working and
goods handling methods, management supervision and good housekeeping all need consideration.
It is essential that water spray systems should be properly maintained to ensure operation when required.
This routine is liable to be overlooked or given insufficient attention by supervisors. It is, however,
neglected at peril to the lives of occupants of the premises and at the risk of crippling financial loss. The
importance of proper maintenance cannot be too highly emphasized.
When water spray systems are out of service, extra attention should be paid to fire precautions and the
appropriate authorities informed.
This standard is intended for use by those concerned with purchasing, designing, installing, testing,
inspecting, approving, operating and maintaining water spray systems, in order that such equipment will
function as intended throughout its life.
It is a basic assumption that this standard is for the use of companies employing personnel competent in
the field of application with which it deals. The design, installation and maintenance of water spray systems
should be undertaken only by trained and experienced personnel. Similarly, competent technicians should
be used in the installation and testing of the equipment.

1 Scope
This Technical Specification specifies requirements and gives recommendations for the design, installation
and maintenance of fixed deluge water spray systems internal and external to buildings and industrial plant
and other premises on land. This Technical Specification covers only the use of the types of sprinklers and
sprayers specified in EN 12259-1. The requirements and recommendations of this Technical Specification are
also applicable to any addition, extension, repair or other modification to a water spray system. This Technical
Specification does not deal with sprinkler systems.
It covers the 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 necessary for the satisfactory performance of water spray systems complying with this Technical
Specification.
The general principles may well apply to other uses (e.g. maritime use), for these other uses additional
considerations will almost certainly have to be taken into account.
For water spray systems covered by this Technical Specification the authority shall be consulted.
2 Normative references
The following referenced documents are indispensable for the application 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 54-1, Fire detection and fire alarm systems – Part 1: Introduction
EN 54-2, Fire detection and fire alarm systems – Part 2: Control and indicating equipment
EN 54-3, Fire detection and fire alarm systems – Part 3: Fire alarm devices – Sounders
EN 54-4, Fire detection and fire alarm systems – Part 4: Power supply equipment
EN 54-5, Fire detection and fire alarm systems – Part 5: Heat detectors – Point detectors
EN 54-10, Fire detection and fire alarm systems – Part 10: Flame detectors – Point detectors
EN 54-11, Fire detection and fire alarm systems – Part 11: Manual call points
EN 12094 (all parts), Fixed firefigh
...