Fire-fighting - Positive-pressure proportioning systems (PPPS) and compressed-air foam systems (CAFS)

This European Standard applies to systems which add a foam concentrate to the water discharged from a fire-fighting centrifugal pump either:
a)   by a positive-pressure proportioning system (PPPS) alone, or
b)   together with compressed-air by means of a compressed-air foam system (CAFS).
In both cases pressure is applied to the foam concentrate in order to permit continuous operation. Such systems are permanently installed in fire-fighting vehicles. Permanently installed or fixed systems in buildings or structures are not covered by this European Standard.
NOTE 1   This European Standard is intended to be used in conjunction with EN 1846–2 and EN 1846–3.
This European Standard applies to the design, manufacture and operation of such systems. This European Standard deals with all significant hazards, hazardous situations and events relevant to PPPS and CAFS when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacture (see Clause 4).
NOTE 2   Performance requirements are also given (see Clause 7).
This European Standard applies to systems which are used at ambient temperatures ranging from −15 °C to +35 °C as stated in EN 1846 3.
For systems to be used at temperature outside this temperature range, the particular temperature range should be specified by the user and the manufacturer should determine by a risk assessment any need for additional precautions.
This European Standard does not apply to the technical safety requirements concerning the design and manufacturing of drives, auxiliary equipment, sources of energy or pumps. Furthermore, this European Standard does not deal with special hazards arising from the particular conditions under which these systems are used, for example:
c)   handling of any equipment, devices etc. which are connected to the system or are joined to it (e.g. handling of branch pipes/nozzles and pressure hoses);
a)   events specific to the location where the system is set up (e.g. on public roads);
f)   decommissioning and disposal;
g)   operation without supervision;
h)   immunity against electromagnetic fields and electrostatic discharge.
Hazards relating to any kind of mechanical, electrical, hydraulic, pneumatic and other equipment dealt with by the respective standards for such equipment are not covered by the present standard. References to the relevant standards are made wherever such standards exist and whenever necessary.
This European Standard does not deal with the hazards arising from noise.
NOTE 3   EN 1846–2 covers hazards arising from noise for the complete vehicle.
This European Standard does not deal with hazards related to handling foam concentrates or contact with.
NOTE 4   Additive installation is dealt with in EN 1846–3.
This European Standard is not applicable to systems which are manufactured before the date of publication of this European Standard by CEN.

Feuerwehrwesen - Druckzumischanlagen (DZA) und Druckluftschaumanlagen (DLS)

Diese Europäische Norm gilt für Anlagen, bei denen dem Wasser, das einer Feuerlöschkreiselpumpe entnommen wird, ein Schaummittel zugeführt wird, entweder:
a) durch eine Druckzumischanlage (DZA) allein; oder
b) zusammen mit Druckluft mithilfe einer Druckluftschaumanlage (DLS).
In beiden Fällen wird das Schaummittel unter Druck zugeführt, um einen kontinuierlichen Betrieb zu gestatten. Diese Anlagen sind in Feuerwehrfahrzeuge fest eingebaut. Dauerhaft oder fest in Gebäuden oder Konstruktionen eingebaute Anlagen sind nicht Gegenstand dieser Norm.
ANMERKUNG 1 Diese Europäische Norm ist für die Anwendung in Verbindung mit EN 1846-2 und EN 1846-3 vorgesehen.
Diese Europäische Norm behandelt die Konstruktion, die Herstellung und den Betrieb dieser Anlagen. Diese Europäische Norm behandelt alle wesentlichen Gefährdungen, Gefährdungssituationen und -ereignisse, die für DZA und DLS maßgebend sind, wenn sie bestimmungsgemäß eingesetzt werden und auch unter Bedingungen einer vom Hersteller vernünftigerweise vorhersehbaren Fehlanwendung (siehe Abschnitt 4).
ANMERKUNG 2 Leistungsanforderungen sind ebenfalls enthalten (siehe Abschnitt 7).
Diese Europäische Norm gilt für Anlagen, die entsprechend den Anforderungen in EN 1846-3 unter Umgebungstemperaturen zwischen -15 °C und +35 °C eingesetzt werden.
Bei Systemen, die bei Temperaturen außerhalb dieses Temperaturbereiches angewendet werden sollen, sollte der betreffende Temperaturbereich vom Anwender festgelegt werden und der Hersteller sollte mittels einer Risikobewertung ermitteln, ob möglicherweise zusätzliche Vorkehrungen getroffen werden müssen.
Diese Europäische Norm befasst sich nicht mit den sicherheitstechnischen Anforderungen an die Konstruktion und Herstellung von Antrieben, Hilfseinrichtungen, Energiequellen oder Pumpen. Weiterhin befasst sich diese Europäische Norm nicht mit besonderen Gefährdungen, die sich aus besonderen Umständen ergeben, unter denen diese Anlagen eingesetzt werden, wie z. B.:
a) Handhabung aller Aggregate, Geräte usw., die an das System angeschlossen werden oder mit ihm verbunden sind (z. B. Handhabung der Strahlrohre und Druckschläuche);
b) ortsbezogene Ereignisse durch die Aufstellung der Anlagen (z. B. auf öffentlichen Straßen);
c) Außerdienststellung und Entsorgung;
d) unbeaufsichtigter Betrieb;
e) Störfestigkeit gegen elektromagnetische Felder und elektrostatische Entladung.
Gefährdungen hinsichtlich aller Arten von mechanischen, elektrischen, hydraulischen, pneumatischen und weiteren Einrichtungen, die in den betreffenden Normen für diese Einrichtungen behandelt werden, sind von der vorliegenden Norm nicht abgedeckt. Verweisungen auf die maßgebenden Normen werden gemacht, sofern derartige Normen verfügbar sind und soweit dies erforderlich ist.
Die Gefährdung durch Lärm wird in dieser Europäischen Norm nicht behandelt.
ANMERKUNG 3 Gefährdungen durch Lärm für das komplette Fahrzeug werden durch EN 1846-2 abgedeckt.
Diese Europäische Norm behandelt keine Gefährdungen, die mit dem Umgang mit Schaummitteln oder dem Kontakt damit im Zusammenhang stehen.
ANMERKUNG 4 Die löschtechnische Einrichtung für Löschmittelzusatz wird in EN 1846-3 behandelt.
EN 16327:2014 (D)
9
Diese Europäische Norm gilt nicht für Anlagen, die vor dem Datum der Veröffentlichung dieser Europäischen Norm durch CEN hergestellt wurden.

Lutte contre l'incendie - Systèmes proportionneurs à pression positive (SPPP) et systèmes de mousse à air comprimé (CAFS)

La présente Norme européenne s'applique aux systèmes qui ajoutent un émulseur à l'eau refoulée par une pompe centrifuge à usage incendie :
a)   soit par un système proportionneur à pression positive (SPPP) seul
b)   soit conjointement avec de l'air comprimé par un système de mousse à air comprimé (CAFS).
Dans les deux cas, la pression est appliquée à l’émulseur en vue de permettre un fonctionnement continu. De tels systèmes sont installés à demeure dans les véhicules de lutte contre l'incendie. Les systèmes fixes ou installés à demeure dans les bâtiments ou les structures ne sont pas traités dans la présente norme.
NOTE 1   La présente Norme européenne est destinée à être utilisée conjointement avec l'EN 1846-2 et l'EN 1846-3.
La présente Norme européenne s'applique à la conception, à la fabrication et au fonctionnement de ces systèmes. La présente Norme européenne traite tous les phénomènes dangereux, situations et événements dangereux significatifs spécifiques aux SPPP et CAFS, lorsqu'ils sont utilisés normalement et dans les conditions raisonnablement prévisibles par le fabricant (voir Article 4).
NOTE 2   Des prescriptions de performance sont également données (voir Article 7).
La présente Norme européenne s'applique aux systèmes utilisés à des températures ambiantes comprises entre - 15 °C et + 35 °C, tel qu'indiqué dans l'EN 1846-3.
Pour les systèmes devant être utilisés à une température située en dehors de cette plage, il convient que la plage de température particulière soit spécifiée par l'utilisateur et il convient que le fabricant détermine par une appréciation du risque la nécessité de précautions supplémentaires.
La présente Norme européenne ne s'applique pas aux prescriptions de sécurité technique relatives à la conception et à la fabrication des moteurs, de l'équipement auxiliaire, des sources d'énergie ou des pompes. De plus, la présente norme ne traite pas des phénomènes dangereux spécifiques provenant des conditions particulières dans lesquelles ces systèmes sont utilisés, par exemple :
a)   manipulation de tous les équipements, dispositifs etc. devant être raccordés au système ou qui sont reliés à lui (par exemple manipulation de tuyaux/lances et tuyaux sous pression) ;
b)   événements spécifiques à l'emplacement où le système est installé (par exemple routes publiques) ;
c)   mise hors service et élimination ;
d)   fonctionnement sans supervision ;
e)   immunité contre les champs magnétiques et les décharges électrostatiques.
La présente norme ne couvre pas les phénomènes dangereux relatifs à tout type d'équipement mécanique, électrique, hydraulique, pneumatique et autre traités par les normes respectives relatives à cet équipement. Il est fait référence aux normes pertinentes lorsqu’elles existent et que cela est nécessaire.
La présente Norme européenne ne traite pas des phénomènes dangereux engendrés par le bruit.
NOTE 3   L'EN 1846 2 traite des phénomènes dangereux engendrés par le bruit pour le véhicule dans son ensemble.
La présente Norme européenne ne traite pas des phénomènes dangereux liés à la manipulation des émulseurs ou au contact avec ceux-ci.
NOTE 4   L'installation d'additif est traitée dans l'EN 1846 3.
La présente Norme européenne ne s’applique pas aux systèmes fabriqués avant la date de publication de la présente Norme européenne par le CEN.

Gasilska oprema - Nadtlačni dozirni sistemi (NDS) in sistemi za komprimirano zračno peno (SKZP)

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Status
Published
Publication Date
11-Feb-2014
Current Stage
9060 - Closure of 2 Year Review Enquiry - Review Enquiry
Due Date
02-Sep-2019
Completion Date
02-Sep-2019

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.RPSULPLUDQRFeuerwehrwesen - Druckzumischanlagen (DZA) und Druckluftschaumanlagen (DLS)Lutte contre l'incendie - Systèmes proportionneurs à pression positive (SPPP) et systèmes de mousse à air comprimé (CAFS)Fire-fighting - Positive pressure foam proportioning systems (PPFPS) and compressed air foam systems (CAFS)13.220.10Gašenje požaraFire-fightingICS:Ta slovenski standard je istoveten z:EN 16327:2014SIST EN 16327:2014en,fr,de01-april-2014SIST EN 16327:2014SLOVENSKI

STANDARD
SIST EN 16327:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16327
February 2014 ICS 13.220.10 English Version

Fire-fighting - Positive-pressure proportioning systems (PPPS) and compressed-air foam systems (CAFS)

Lutte contre l'incendie - Systèmes proportionneurs à pression positive (SPPP) et systèmes de mousse à air comprimé (CAFS)

Feuerwehrwesen - Druckzumischanlagen (DZA) und Druckluftschaumanlagen (DLS) This European Standard was approved by CEN on 27 December 2013.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16327:2014 ESIST EN 16327:2014

EN 16327:2014 (E) 2 Contents Page Foreword ..............................................................................................................................................................3 Introduction .........................................................................................................................................................5 1 Scope ......................................................................................................................................................7 2 Normative references ............................................................................................................................8 3 Terms and definitions ...........................................................................................................................9 4 List of significant hazards ................................................................................................................. 11 5 Classification and designation .......................................................................................................... 14 5.1 Classification and designation of positive-pressure proportioning systems (PPPS) ................. 14 5.2 Classification and designation of compressed-air foam systems (CAFS) ................................... 15 6 Safety requirements and/or protective measures ........................................................................... 16 6.1 Safety requirements applying to all systems .................................................................................. 16 6.1.1 General ................................................................................................................................................. 16 6.1.2 Mechanical equipment ....................................................................................................................... 17 6.1.3 Electrical equipment ........................................................................................................................... 17 6.1.4 Thermal hazards ................................................................................................................................. 18 6.1.5 Ergonomic design principles ............................................................................................................ 18 6.1.6 System failure and continuation of on-going fire-fighting operations .......................................... 19 6.1.7 Maintenance ........................................................................................................................................ 19 6.1.8 Protection against over-speed .......................................................................................................... 19 6.1.9 Shutdown device ................................................................................................................................ 19 6.1.10 Injection of foam concentrates .......................................................................................................... 19 6.2 Additional safety requirements for compressed-air foam systems (CAFS) ................................. 20 7 Performance requirements ................................................................................................................ 20 7.1 Performance requirements applying to all systems ....................................................................... 20 7.2 Additional performance requirements for positive-pressure proportioning systems (PPPS) .................................................................................................................................................. 22 7.3 Additional performance requirements for compressed-air foam systems (CAFS) ..................... 22 8 Type test report ................................................................................................................................... 23 9 Information for users .......................................................................................................................... 24 9.1 General ................................................................................................................................................. 24 9.2 Symbols, warning symbols and warning notes .............................................................................. 24 9.3 Accompanying documents ................................................................................................................ 24 9.3.1 General ................................................................................................................................................. 24 9.3.2 Contents .............................................................................................................................................. 24 10 Marking ................................................................................................................................................ 27 Annex A (informative)

Guideline for acceptance inspection and testing of each delivered system ....... 28 Annex B (informative)

Sample of a positive-pressure proportioning system (PPPS) operating range diagram ..................................................................................................................................... 29 Annex C (informative)

Sample of a compressed-air foam system (CAFS) operating range diagram ..... 30 Annex D (normative)

Test Procedure for finished CAFS Foam................................................................... 31 Annex E (informative)

Technical CAFS diagrams ......................................................................................... 34 SIST EN 16327:2014

EN 16327:2014 (E) 3 Annex ZA (informative)

Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC ........................................................................................ 36 Bibliography ...................................................................................................................................................... 37

Figures Figure B.1– Sample diagram showing the operating range of a type PPPS 2400 positive-pressure proportioning system.......................................................................................................................... 29 Figure C.1 – Sample diagram showing the operating range of a compressed-air foam system (CAFS); maximum flows at ratio adjusted settings ......................................................................... 30 Figure D.1 — Collecting vessel for determination of expansion and drainage time ................................. 32 Figure D.2 — Foam collector for expansion and drainage measurement .................................................. 32 Figure D.3 — Arrangement of nozzle and collecting-device during test .................................................... 33 Figure E.1 — Sample of a typical system diagram for CAFS with a single mixing device ....................... 34 Figure E.2 — Sample of a typical CAFS with multiple mixing devices ....................................................... 35

Tables Table 1 — List of significant hazards ............................................................................................................. 12 Table 2 – Classification of positive-pressure proportioning systems (PPPS) ........................................... 14 Table 3 – Classification of compressed-air foam systems (CAFS) ............................................................. 15

SIST EN 16327:2014

EN 16327:2014 (E) 4 Foreword This document (EN 16327:2014) has been prepared by Technical Committee CEN/TC 192 “Fire and rescue service equipment”, 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 August 2014, and conflicting national standards shall be withdrawn at the latest by August 2014. 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. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 16327:2014

EN 16327:2014 (E) 5 Introduction This standard is a type C standard as defined in EN ISO 12100. The machinery concerned and the extent to which hazards, hazardous situations and hazardous events are covered are indicated in the scope of this document. When provisions of this type C standard are different from those which are stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of the other standards, for machines that have been designed and built according to the provisions of this type C standard. The present document describes systems installed in a fire-fighting vehicle in order to improve the efficiency of fire-extinguishing processes. This is achieved by adding chemical solutions or foam concentrates (hereinafter collectively called foam concentrates) under pressure to the water being delivered by the fire-fighting centrifugal pump. Compressed-air may be injected in some cases to create the finished foam. In addition to Class B fire-fighting operation, the described systems are used in Class A fire-fighting operation, with the aim to improve the adhesion, penetration and retention time of the fire-extinguishing agent on the burning material, thereby transferring more energy, and improving the cooling effect of the applied media. The object of using foams with fire extinguishing agents is to increase the effective contact area of the foam solution and to improve the adhesion to non-horizontal surfaces of the burning material, thereby increasing the time period in which heat is effectively transferred. Another aim of the systems described is to improve, ease, and speed-up the use of foam concentrates during regular use in municipal or similar fire-fighting operations. The following principles can be considered for mixing foam concentrates to water for fire-fighting purpose, where a) and b) is not part of this standard: a) Venturi type inductors which create a vacuum to draw foam concentrate into the water stream. These inductors may be used as loose equipment, coupled into the hose line or permanently installed with a fire pump. A “Round the Pump” (RTP) system takes water from the pump discharge through a venturi device to draw foam concentrate into the pump- suction NOTE These mobile systems are subject of a standard currently in preparation by CEN/TC 192/WG 8. An RTP system may be used in conjunction with a PPPS if the full flow capacity of a fire pump is delivered as solution, and the full flow pump capacity exceeds the performance of the PPPS. All discharges on a fire pump will provide solution once an RTP is in operation. A RTP system will contaminate the fire pump and related installations with foam concentrate. b) Premix (also known as batch mix) is a concept used in certain applications, where a measured amount of foam concentrate is added to the water in the vehicle tank, each time the water tank is filled. There is no special mixing technology used, the foam concentrate is simply poured into the water tank. This principle is typically used for seasonal fire- fighting operation (forest and wildland) where the equipment is flushed, serviced and stored away once the season is over. c) Positive-pressure proportioning systems (PPPS) use a foam concentrate pump to inject the foam agent into the water stream at a pressure higher than the water pressure. A PPPS typically provides solution to designated discharges on a fire pump. The systems considered in this standard were originally designed as “Class A foam proportioners” to handle low injection rates and variable flows. However, they can be used with any other suitable foam concentrate. Recent developments on foam concentrates allow low injection rates for Class B fire- fighting as well. SIST EN 16327:2014

EN 16327:2014 (E) 6 PPPS do not contaminate the fire pump and water installations with foam concentrate. Once a water concentrate solution is produced, the finished foam will be created by inducting air at the fire-fighting nozzle as a “Nozzle Aspirated Foam System” (NAFS) or as d) Injecting compressed-air as a “Compressed-air Foam System” (CAFS). The system designations mentioned in this standard refer to typical fire-fighting nozzle flow rates or to a combination of such nozzles used at one time. Water foam solution produced by the PPPS can also be delivered through common non aspirating branch pipe in order to use water with reduced surface tension. This European Standard considers PPPS and CAFS to be installed in conjunction with a fire-fighting centrifugal pump according to EN 1028 (all parts) or EN 14710 (all parts). PPPS and CAFS may be operated simultaneously whilst delivering plain water from a fire pump. Information on environmental impact of fluorine-containing foam extinguishing agent: Poly-and perfluorinated chemicals (Perfluorochemicals PFC) can be detected by living organisms, in water and sediments. In nature they are very difficult or impossible to degrade. Therefore, the EU has banned the marketing and use of Perfluoroctansulfonate (PFOS) C8F17SO2X since 2008-06-27 by EU-Directive 2006/122/EC. See also EU-REACH-Regulation ECV 1907/2006. For fire extinguishing agent based on PFOS, a use period has expired on June 2011 (provided that they were already on the market before December 2006). Only PFOS containing fire-fighting foaming agents are affected by the EU ban. However, other poly-and perfluorinated chemicals (PFCs) may have a long term influence on living organisms and the environment, as well. It is therefore necessary to carefully evaluate if PFC-containing foaming agents are required for the particular fire-fighting operation in question. Training with PFCs should be avoided or reduced to the absolute minimum. General procedures of foam application may be developed with “Training Foam” agents, thereby causing less impact on the environment. The use of PFCs for fire-fighting and training operation may require the containment and proper disposal of any run-off, depending on local regulations. While the use of the aforementioned foam agents (PFCs) may be required for Class B fire-fighting operations, the use of Class A, biodegradable foam agents should be considered for Class A fire-fighting operations, as it will reduce the environmental impact of the fire-fighting operation significantly. Any tests producing finished foam, as described in this standard, should be kept to the minimum required and use an environmentally friendly foam agent whenever possible. Testing and training should use appropriate sites, where run-off can be controlled in accordance with local regulations and will not contaminate any open water-sources or the water-table. The Material-Safety Data Sheet (MSDS) for each foam agent being used should be considered for decisions in relation to the environmental impact. Consultations with local authorities, organizations and agencies may be required to ensure use and disposal. The objective of using foam for any fire-fighting operation is to reduce knock-down time and the amount of combustion-products released while the fire is burning. Using foam to improve the efficiency of the fire-fighting operation will consume less water and reduce the amount of contaminated run-off. These factors should be balanced against any potential impact from the foam-agent being used. SIST EN 16327:2014

EN 16327:2014 (E) 7 1 Scope This European Standard applies to systems which add a foam concentrate to the water discharged from a fire-fighting centrifugal pump either: a) by a positive-pressure proportioning system (PPPS) alone, or b) together with compressed-air by means of a compressed-air foam system (CAFS). In both cases pressure is applied to the foam concentrate in order to permit continuous operation. Such systems are permanently installed in fire-fighting vehicles. Permanently installed or fixed systems in buildings or structures are not covered by this European Standard. NOTE 1 This European Standard is intended to be used in conjunction with EN 1846–2 and EN 1846–3. This European Standard applies to the design, manufacture and operation of such systems. This European Standard deals with all significant hazards, hazardous situations and events relevant to PPPS and CAFS when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacture (see Clause 4). NOTE 2 Performance requirements are also given (see Clause 7). This European Standard applies to systems which are used at ambient temperatures ranging from −1o °C to +3o °C as stated in EN 1846-3. For systems to be used at temperature outside this temperature range, the particular temperature range should be specified by the user and the manufacturer should determine by a risk assessment any need for additional precautions. This European Standard does not apply to the technical safety requirements concerning the design and manufacturing of drives, auxiliary equipment, sources of energy or pumps. Furthermore, this European Standard does not deal with special hazards arising from the particular conditions under which these systems are used, for example: a) handling of any equipment, devices etc. which are connected to the system or are joined to it (e.g. handling of branch pipes/nozzles and pressure hoses); b) events specific to the location where the system is set up (e.g. on public roads); c) decommissioning and disposal; d) operation without supervision; e) immunity against electromagnetic fields and electrostatic discharge. Hazards relating to any kind of mechanical, electrical, hydraulic, pneumatic and other equipment dealt with by the respective standards for such equipment are not covered by the present standard. References to the relevant standards are made wherever such standards exist and whenever necessary. This European Standard does not deal with the hazards arising from noise. NOTE 3 EN 1846–2 covers hazards arising from noise for the complete vehicle. This European Standard does not deal with hazards related to handling foam concentrates or contact with. NOTE 4 Additive installation is dealt with in EN 1846–3. SIST EN 16327:2014

EN 16327:2014 (E) 8 This European Standard is not applicable to systems which are manufactured before the date of publication of this European Standard by CEN. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 349, Safety of machinery - Minimum gaps to avoid crushing of parts of the human body EN o47-2, Safety of machinery - Human body measurements - Part 2: Principles for determining the dimensions required for access openings EN o47-3, Safety of machinery - Human body measurements - Part 3: Anthropometric data EN 6o9, Protective gloves for firefighters EN 894-1, Safety of machinery - Ergonomics requirements for the design of displays and control actuators - Part 1: General principles for human interactions with displays and control actuators EN 894-2, Safety of machinery - Ergonomics requirements for the design of displays and control actuators - Part 2: Displays EN 894-3, Safety of machinery - Ergonomics requirements for the design of displays and control actuators — Part 3: Control actuators EN 894-4, Safety of machinery - Ergonomics requirements for the design of displays and control actuators - Part 4: Location and arrangement of displays and control actuators EN 9o3, Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards EN 100o-3, Safety of machinery - Human physical performance - Part 3: Recommended force limits for machinery operation EN 1028-1, Fire-fighting pumps - Fire-fighting centrifugal pumps with primer - Part 1: Classification — General and safety requirements EN 1028-2, Fire-fighting pumps - Fire-fighting centrifugal pumps with primer - Part 2: Verification of general and safety requirements EN 1o68-1, Fire extinguishing media - Foam concentrates - Part 1: Specification for medium expansion foam concentrates for surface application to water-immiscible liquids EN 1o68-3:2008, Fire extinguishing media - Foam concentrates - Part 3: Specification for low expansion foam concentrates for surface application to water-immiscible liquids EN 1846-2, Firefighting and rescue service vehicles - Part 2: Common requirements - Safety and performance EN 1846-3:2013, Firefighting and rescue service vehicles - Part 3: Permanently installed equipment - Safety and performance EN 14466:200o+A1:2008, Fire-fighting pumps - Portable pumps - Safety and performance requirements, tests CEN/TS 1o989, Firefighting vehicles and equipment - Symbols for operator controls and other displays SIST EN 16327:2014

EN 16327:2014 (E) 9 EN 60204-1, Safety of machinery — Electrical equipment of machines — Part 1: General requirements (IEC 60204-1) EN 60o29, Degrees of protection provided by enclosures (IP code) (IEC 60529) EN 61310-1, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual, acoustic and tactile signals (IEC 61310-1) EN 61310-2, Safety of machinery — Indication, marking and actuation — Part 2: Requirements for marking (IEC 61310-2) EN 61310-3, Safety of machinery — Indication, marking and actuation — Part 3: Requirements for the location and operation of actuators (IEC 61310-3) EN ISO 12100:2010, Safety of machinery - General principles for design - Risk assessment and risk reduction (ISO 12100:2010) EN ISO 13732-1, Ergonomics of the thermal environment - Methods for the assessment of human responses to contact with surfaces - Part 1: Hot surfaces (ISO 13732-1) EN ISO 13732-3, Ergonomics of the thermal environment - Methods for the assessment of human responses to contact with surfaces - Part 3: Cold surfaces (ISO 13732-3) EN ISO 138o7, Safety of machinery - Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857) ISO 7000, Graphical symbols for use on equipment - Registered symbols 3 Terms and definitions For the purpose of this document, the terms and definitions in EN 1028-1 and EN 1028-2 and the following apply. 3.1 positive-pressure proportioning systems PPPS system in which a foam concentrate under pressure, at a dosage rate proportional to the flow rate of the water, is continuously added to the water being discharged from a fire-fighting centrifugal pump 3.2 compressed-air foam system CAFS system in which a foam concentrate and air are continuously added, under pressure, to the water being discharged from a fire-fighting centrifugal pump Note 1 to entry: It is assumed that in a compressed-air foam system a positive-pressure proportioning system adds the foam concentrate continuously to the water being discharged from a fire-fighting centrifugal pump at a dosage rate proportional to the flow rate of the water. 3.3 foam solution mixture of water and foam concentrate Note 1 to entry: PPPS has no influence on the aspiration. Therefore, test procedures in this standard only consider the accuracy of dosage. Finished foam may be tested as described in EN 1o68 (all parts) if necessary. SIST EN 16327:2014

EN 16327:2014 (E) 10 3.4 wet foam operation defined by a nominal solution/air ratio between 1:3 and 1:10, being mixed in the system, with finished foam delivered from the system with an expansion ratio between 4 and 11 3.5 dry foam operation defined by a nominal solution/air ratio greater than 1:10, being mixed in the system, with finished foam delivered from the system with an expansion ratio greater than 11 Note 1 to entry: CAFS has an influence on the production of the finished foam. Finished foam from CAFS is tested as described in Annex D, which is based on EN 1o68–3 principles. Note 2 to entry: Typically all finished foam produced by CAFS falls under “Low Expansion Foams” as described in EN 1o68–3. 3.6 operating range range (of conditions) specified by the manufacturer of a system and within which the system can be operated without limitations while achieving the designated performance characteristics 3.7 Delivery rates NOTE Delivery rates are stated in litres per minute [l/min]. 3.7.1 foam solution delivery rate Qw volume (of water plus foam concentrate) delivered per unit of time by a system Note 1 to entry At proportioning ratios of up to 1 % the difference between water delivery rate and foam solution delivery rate can be neglected. 3.7.2 nominal foam solution delivery rate foam solution delivery rate at the nominal delivery pressure of the fire-fighting centrifugal pump 3.7.3 air delivery rate volume of air, in ambient condition, that is fed into a compressed-air foam system per unit of time Note 1 to entry: For determination of flow-rate characteristics see ISO 63o8. Note 2 to entry: While inside the system the air-volume is compressed according to the pressure applied. Once leaving the system from the nozzle to atmosphere the air expands to its normal volume again. 3.8 proportioning ratio amount of foam agent added to water given as a percentage SIST EN 16327:2014

EN 16327:2014 (E) 11 3.9 Volume definitions

3.9.1 air/foam solution volume ratio relationship between parts of liquid (solution) and parts of air (at atmospheric pressure) being mixed together in a CAFS mixing device Note 1 to entry: The measurement units are l/min. 3.9.2 flushing procedure procedure described by the manufacturer to ensure that the foam proportioning system and associated pipework on the fire-fighting centrifugal pump to the discharge connection is adequately flushed of foam concentrate and solution to avoid any damage EXAMPLE Corrosion. 3.10 operating pressure of the compressed-air foam system p pressure, specified by the compressed-air foam system manufacturer, at the system input connection at which all performance and safety requirements are met 4 List of significant hazards This clause contains all the significant hazards, hazardous situations and events, as far as they are dealt with in this European Standard, identified by risk assessment as significant for this type of machinery and which necessitates action to eliminate or reduce the risk. The significant

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