CEN/TC 191/WG 10 - Water mist systems

This document specifies product characteristics and test methods of open nozzles and automatic nozzles for use in water mist systems.
NOTE   All pressure data in this document are given as gauge pressures in bar.

This document specifies the evaluation of the fire fighting performance of water mist systems used for fire protection of commercial deep fat cooking fryers.
This document covers the area of the fryer and its close vicinity only and does not include surrounding areas beyond that the system is intended to cover.
This document includes protection of the cooking area, filters, exhaust hood, and duct against fires originating from the fryer.
This document covers only manually operated systems.

This document specifies the evaluation of the fire performance of water mist systems for lightly loaded non-storage and non-manufacturing occupancies with ordinary combustibles, such as offices, schools, hospitals and hotels.
This document is applicable to ceiling mounted and sidewall automatic nozzles to be used in restricted and/or unlimited areas.
This document is applicable for horizontal, solid, flat ceilings with heights of 2 m and above, up to the maximum tested ceiling height.

This document specifies fire testing requirements for water mist systems used for fire protection of commercial low hazard occupancies up to 5 m ceiling height.

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 the evaluation of the firefighting performance of water mist systems for false ceilings and false floors with heights between 300 mm and 800 mm.
This fire test protocol is applicable to pendent or upright automatic nozzles to be used in unlimited volume.
This document is applicable for horizontal, solid, flat ceilings.
It is not possible to apply these tests to other applications than the ones specified within this fire test protocol.

This document specifies the evaluation of the fire performance of water mist systems for fire protection of interior atriums, with low or medium fire load where the fire load or any obstructions do not extend above 1,5 m height.

This document specifies the evaluation of the fire performance for water mist systems used for fire protection of combustion turbines in enclosures with volumes exceeding 260 m³.

This document specifies fire testing requirements for water mist systems used for fire protection of combustion turbines in enclosures with volumes not exceeding 260 m³.

This document specifies the evaluation of the fire performance of water mist systems for offices, school classrooms and hotels. This fire test protocol is applicable to ceiling mounted automatic nozzles to be used in unlimited volume. This document is applicable for horizontal, solid, flat ceilings with heights of 2 m and above, up to the maximum tested ceiling height.

This document specifies product characteristics and test methods for strainer and filter components for water supply connections and pipe work in water mist systems. This document is applicable to strainers and filters with filtration grades up to 6 mm.

This document specifies requirements and gives recommendations for the design, installation, inspection and maintenance of all types of fixed land based water mist systems.
This document is intended to apply to water mist automatic nozzle systems and water mist deluge systems supplied by stand alone or pumped systems.
The document covers only applications and occupancies which are covered by the fire test protocols of the EN 14972 series.
Aspects of water mist associated with explosion protection and/or use within vehicles are not covered by this document.
This document does not cover all legislative requirements. In certain countries specific national regulations apply and take precedence over this document. Users of this document are advised to inform themselves of the applicability or non-applicability for this document by their national responsible authorities.

This document specifies fire testing requirements for water mist systems used for fire protection of machinery in enclosures with volumes exceeding 260 m³.

This document specifies fire testing requirements for water mist systems used for fire protection of machinery in enclosures with volumes not exceeding 260 m³.

This document specifies fire testing requirements for water mist systems used for fire protection of industrial oil cookers. This does not include requirements for systems used for protection of other equipment such as exhaust air ducts, heaters, heat exchangers, and food processing and food preparation areas.

This document specifies the evaluation of the fire performance of water mist systems for shopping areas, adjacent storage areas, and similar areas. This document is only applicable for horizontal, solid, flat ceilings with heights of 2,6 m and above.
This document does not cover storage with movable racks or shelves.

This document specifies fire testing requirements for water mist systems used for fire protection of domestic and residential occupancies up to a maximum ceiling height of 5,5 m.
EXAMPLE   Examples for residential occupancies are family dwelling/house, bed and breakfast, apartment buildings, blocks of flats, care homes, small hotels or hostels, and residential areas in hotel bedrooms and guest corridors.
NOTE   Some countries might have a national annex with guidance on the maximum height of the building, minimum design area and any additional requirements.

This document specifies the requirements and describes the test methods for check valves for water mist firefighting systems.
Check valves allow the passage in the direction of flow and they prevent flow in the reverse direction.
This document is applicable to check valves installed in the pipework of water mist firefighting systems.

This document specifies the evaluation of the fire performance of water mist systems for wet benches and other similar processing equipment.

This document specifies requirements and gives recommendations for the design, installation, inspection and maintenance of all types of fixed land based water mist systems.
This document is intended to apply to water mist automatic nozzle systems and water mist deluge systems supplied by stand alone or pumped systems.
The document covers only applications and occupancies which are covered by the fire test protocols of the EN 14972 series.
Aspects of water mist associated with explosion protection and/or use within vehicles are not covered by this document.
This document does not cover all legislative requirements. In certain countries specific national regulations apply and take precedence over this document. Users of this document are advised to inform themselves of the applicability or non-applicability for this document by their national responsible authorities.

This document specifies the evaluation of the fire performance of water mist systems for non-stacking garages, fully enclosed garages and underground garages.
This document is applicable for horizontal, solid, flat ceilings with heights of 2 m and above.

This document specifies fire testing requirements for water mist systems used for fire protection of domestic and residential occupancies up to a maximum ceiling height of 5,5 m.
EXAMPLE   Examples for residential occupancies are family dwelling/house, bed and breakfast, apartment buildings, blocks of flats, care homes, small hotels or hostels, and residential areas in hotel bedrooms and guest corridors.
NOTE   Some countries might have a national annex with guidance on the maximum height of the building, minimum design area and any additional requirements.

This standard provides information for verifiable classification of watermist systems, according to their expected fire protection characteristics with reference to extinguishment, fire control or suppression.
It devises a series of specific test conditions to set out criteria capable of verifying performance claims of watermist systems, classify and determine the extent of their suitability for intended applications, whilst setting a minimum level of acceptable performance and/or safety.
As the fire test scenarios of this standard apply to a group of similar applications, by analogy the successful performance of watermist systems also applies to that group, as defined in annex A.
As individual watermist applications have varied requirements and duty, this European standard is intended to apply to both skidded stand alone and pumped systems. Aspects of watermist associated with explosion protection are beyond the scope of this standard. The standard is not intended to be used as a universal design manual of watermist, as different systems have different characteristics and hence follow different design criteria to satisfy their duty requirements. It is the approving authority's responsibility to assess and implement the design manual of specific watermist systems against the tests set out in this standard.
If the gas in the system is the major factor for extinguishing/suppression the relevant parts of EN 12094 are to be considered.

This Technical Specification specifies requirements and gives information on design, installation and testing and gives criteria for the acceptance of fixed landbased watermist systems for specific hazards and provides fire test protocols for a variety of hazard groups.
The requirements are not valid for watermist systems on ships, in aircraft, on vehicles and mobile fire appliances or for below ground systems in the mining industry.
The requirements can be used as a guidance for other fixed firefighting systems, however, provided that any specific requirements for other firefighting supplies are taken into account.
Aspects of watermist associated with explosion protection are beyond the scope of this document.
As the fire test scenarios of this document apply to a group of similar applications, by analogy the successful performance of watermist systems also applies to that group, as defined in Annex A. Extrapolation is not covered.
The document is not intended to be used as a universal design manual of watermist, as different systems have different characteristics and hence follow different design criteria to satisfy their duty requirements.
In the absence of a generalized design method, it is the intent of this document that watermist systems are full-scale fire tested and its system component evaluations are conducted by qualified testing laboratories.
The full system acceptance requires the relevant fire test report, the component test report(s) as well as manufacturer's design, installation, operation and maintenance manual for the application.
If the gas in the system is a significant factor for extinguishment/suppression, the relevant parts of EN 12094 and EN 15004-1 are applicable.
Firefighting systems in accordance with EN 12845 and water spray systems are not covered.

This document specifies requirements and gives information on design, installation and testing and gives criteria for the acceptance of fixed landbased watermist systems for specific hazards and provides fire test protocols for a variety of hazard groups.
The requirements are not valid for watermist systems on ships, in aircraft, on vehicles and mobile fire appliances or for below ground systems in the mining industry.
The requirements can be used as a guidance for other fixed firefighting systems, however, provided that any specific requirements for other firefighting supplies are taken into account.
Aspects of watermist associated with explosion protection are beyond the scope of this document.
As the fire test scenarios of this document apply to a group of similar applications, by analogy the successful performance of watermist systems also applies to that group, as defined in Annex A. Extrapolation is not covered.
The document is not intended to be used as a universal design manual of watermist, as different systems have different characteristics and hence follow different design criteria to satisfy their duty requirements.
In the absence of a generalized design method, it is the intent of this document that watermist systems are full-scale fire tested and its system component evaluations are conducted by qualified testing laboratories.
The full system acceptance requires the relevant fire test report, the component test report(s) as well as manufacturer’s design, installation, operation and maintenance manual for the application.
If the gas in the system is a significant factor for extinguishment/suppression, the relevant parts of EN 12094 and EN 15004-1 are applicable.
Firefighting systems in accordance with EN 12845 and water spray systems are not covered.