1、BS EN 4649:2009ICS 13.220.10, 49.095NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace series Handheld fireextinguishers withsynthesis gases,for aircraft use Technical specificationand qualificationconditionsThis British Standardwas published under theaut
2、hority of the StandardsPolicy and StrategyCommittee on 30 April2009 BSI 2009ISBN 978 0 580 59766 4Amendments/corrigenda issued since publicationDate CommentsBS EN 4649:2009National forewordThis British Standard is the UK implementation of EN 4649:2009.The UK participation in its preparation was entr
3、usted to TechnicalCommittee ACE/6, Aerospace avionic electrical and fibre optictechnology.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for
4、 its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 4649:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 4649February 2009ICS 13.220.10; 49.095English VersionAerospace series - Handheld fire extinguishers with synthesisgases, for aircr
5、aft use - Technical specification and qualificationconditionsSrie arospatiale - Extincteurs portatifs pour aronefs auxagents gazeux de synthse - Spcification technique etconditions de qualificationLuft- und Raumfahrt - An Bord Handfeuerlscher -Lieferbedingungen und QualifikationsbedingungenThis Euro
6、pean Standard was approved by CEN on 5 October 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references conc
7、erning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own
8、language and notified to the CEN Management Centre has the same status as theofficial versions.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,
9、Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All righ
10、ts of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 4649:2009: EBS EN 4649:2009EN 4649:2009 (E) 2 Contents Page Foreword 3Introduction . 41 Scope 52 Normative references 53 Terms and definitions . 54 Symbols and abbreviations 65 Description . 66 Des
11、ign . 77 Characteristics . 88 Qualification tests 129 Manufacturing requirements 2310 Marking . 2611 Maintenance . 2812 Quality assurance 2813 Qualification . 2814 Traceability . 2915 Packaging . 2916 Storage 2917 Recovery and recycling 29Annex A (normative) Pressure and temperature diagram 30Annex
12、B (normative) Dielectric test diagram . 31Annex C (normative) Technical index . 33Annex D (normative) Qualification tests . 34BS EN 4649:2009EN 4649:2009 (E) 3 Foreword This document (EN 4649:2009) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD
13、-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the s
14、tatus of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2009, and conflicting national standards shall be withdrawn at the latest by August 2009. Attention is drawn to the possibility that some of the elements of this document may be the su
15、bject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium,
16、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. BS EN 4649:2009EN 4649:
17、2009 (E) 4 Introduction This standard is implemented to define aeronautical requirements regarding the following: all handheld fire extinguishers using synthesis gases; all aircraft; the need to protect persons, equipment and the environment (in particular the provisions concerning implementation of
18、 the Montreal protocol). If the extinguisher uses a synthesis gas under the terms of a waiver to current legislation, all the tests except the extinguishing efficiency tests, shall be run using an authorised equivalent substitute agent. This standard is intended for fire extinguishers with a maximum
19、 operating pressure up to 25 bars. BS EN 4649:2009EN 4649:2009 (E) 5 1 Scope This standard specifies the technical requirements and qualification conditions for handheld fire extinguishers made with metal vessels and using synthesis gases for aircraft use, designed for use in the cockpit, in the pas
20、senger cabin and to protect areas accessible to the crew. 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 (inc
21、luding any amendments) applies. EN 9100, Aerospace series Quality management systems Requirements (based on ISO 9001:2000) and Quality systems Model for quality assurance in design, development, production, installation and servicing (based on ISO 9001:1994) EN 9103, Aerospace series Quality managem
22、ent systems Variation management of key characteristics EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts EN 10002-1, Metallic materials Tensile testing Part 1: Method of test at ambient temperature EN 10204, Metallic products Types of inspecti
23、on documents ISO 3941, Classification of fires ISO 7165, Fire fighting Portable fire extinguishers Performance and construction DOT/FAA/AR-01-37, Development of a minimum performance standard for hand-held fire extinguishers as a replacement for Hamon 1211 on Civilian Transport Category Aircraft 1ED
24、-14D/RTCA/DO-160, Environmental conditions and test procedures for airborne equipment 2EASA Part 145, Maintenance Organisation Approvals 33 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 pressure-relief safety device device which releases the
25、pressure inside the vessel in the event of over-pressure 3.2 handheld fire extinguisher extinguisher designed to be carried and used by hand, weighing 20 kg or less 3.3 bracket element used to hold the extinguisher on board 1 Published by: Office of Aviation Research Washington, D.C. 20591. 2 Publis
26、hed by: EUROCAE, 102 rue Etienne Dolet 92240 Malakoff. 3 Published by: European Aviation Safety Agency Postfach 10 12 53 D-50452 Koeln, Germany. BS EN 4649:2009EN 4649:2009 (E) 6 3.4 survival temperature temperature to which the extinguisher may be exposed without compromising subsequent use in the
27、operating temperature range 3.5 fire classes according to ISO 3941, the following fire classes may be identified: class A: these are fires of solid materials, generally organic in nature, the combustion of which normally leads to the formation of embers class B: these are fires involving liquids or
28、liquefiable solids According to this standard the following fire class is added: class H: these are fires in indirectly accessible spaces (hidden fires) 4 Symbols and abbreviations bar Unit of pressure, 1 bar is equal to 0,1 MPa IF Inspection File DF Definition FileMF Manufacturing File P (T max.) P
29、ressure at maximum operating temperature P (T min.) Pressure at minimum operating temperature TP Test Pressure TS Technical Specification T max. Maximum operating temperature T min. Minimum operating temperature V Internal volume of the vessel 5 Description A handheld fire extinguisher consists of,
30、but is not limited to: a vessel; an extinguishing agent; a pressurisation agent if necessary (acting as the propellant); a pressure indicating device; a pick-up device; a controlling device; a projection device; a discharge hose if necessary; a pressure-relief safety device; a controlling device loc
31、king system; an indicator of not used. NOTE The bracket is independent of the extinguisher, but shall be qualified jointly with it. BS EN 4649:2009EN 4649:2009 (E) 7 6 Design 6.1 General The fire extinguisher shall operate in vertical position with the actuating device on the top. No part shall easi
32、ly be removable from the fire extinguisher and its bracket except the controlling device locking system. The design of handheld fire extinguishers shall enable them to withstand the environmental conditions specific to the aeronautical field, as defined in Clause 8: mechanical (vibrations, crash res
33、istance, operational shocks); climatic (temperature, altitude, humidity, salt mist); electromagnetic, if applicable. 6.2 Materials The materials used to manufacture the fire extinguisher shall comply with the standards in force, shall be resistant to the extinguishing and pressurising agents and sha
34、ll withstand the environmental and operating conditions. For this purpose, the designer shall determine the appropriate materials, heat treatments and protections. Magnesium alloys are prohibited. 6.3 Vessel The manufacturer shall obtain and record the analysis and testing certificates for the mater
35、ials used to manufacture the vessels. The inspection documents shall provide the composition of the material and results of the chemical analysis and the results of the mechanical tests in accordance with EN 10204. The vessel shall be made of metal and its design shall comply with the requirements o
36、f 7.2. If a material other than metal is used, the manufacturer must show evidence that this material is compliant to the requirements set forth in this standard. Dedicated test procedures for this material must be developed by the supplier. 6.4 Extinguishing and pressurising agents The products use
37、d shall comply with the applicable standards and regulations in force. 6.5 Pressure-relief safety device The fire extinguisher may be equipped with a pressure-relief safety device designed to protect the pressurised elements against over-pressure. The operation of this device shall be based on the p
38、ressure rise principle. The design of this device shall comply with the requirements of 7.3.1. This device may also be used as a filling device. If not fitted with a pressure-relief safety device, the fire extinguisher shall be designed to automatically evacuate its entire contents safely, in case o
39、f over pressure. In this case, the provisions of 7.3.2 shall apply. BS EN 4649:2009EN 4649:2009 (E) 8 6.6 Pressure indicating device The handheld fire extinguisher shall be equipped with a device indicating that the pressure of the fire extinguisher is within operating limits. 6.7 Pick-up device Thi
40、s device shall allow an efficient pick-up of the extinguishing agent. 6.8 Projection device This device shall allow efficient and easy projection of the extinguishing agent onto the fire. 6.9 Controlling device This device shall be used to start and stop the flow of extinguishing agent. 6.10 Dischar
41、ge hose The fire extinguishers with more than 2 kg of agent(s) shall be equipped with a hose. 6.11 Controlling-device locking system This device is designed to prevent inadvertent actuation. 6.12 Indicator of not used This device shall show whether the fire extinguisher has been operated. This may b
42、e in the form of a wire and seal or a mechanism that prevents re-insertion of the safety device. 6.13 Bracket This device is used to hold the fire extinguisher on board. The fire extinguisher shall be easily removable from its bracket and the related operating method shall be obvious and non-ambiguo
43、us. 7 Characteristics 7.1 General All pressure shall be in accordance with Annex A. The pressure levels reached in the vessel shall be determined according to the agent(s) used, the filling coefficient, the pressurisation pressure, the maximum survival temperature. The minimum range of operating tem
44、perature is 40 C to 70 C. The minimum range of survival temperature is 55 C to 85 C. An attachment of elements on the vessel shall not weaken its mechanical strength. BS EN 4649:2009EN 4649:2009 (E) 9 7.2 Vessel 7.2.1 Thickness of the wall The thickness of the wall shall be such that regardless of t
45、he extinguishing agent used and its vapour pressure, the 0,2 % offset yield strength of the material chosen shall never be exceeded at the vessel test pressure. If markings are etched, these shall be done in a dedicated area. 7.2.2 Mechanical properties The ratio shall be: mp0.2RR 0,90 where Rp0.2is
46、 the yield strength, see EN 10002-1; Rmis the tensile strength, see EN 10002-1. 7.2.3 Test pressure The test pressure shall be minimum equal to 125 % of the pressure corresponding to the maximum survival temperature. 7.2.4 Burst pressure The burst pressure shall be minimum equal to 270 % of the pres
47、sure corresponding to the maximum survival temperature. 7.3 Safety in case of over-pressure 7.3.1 Pressure-relief safety device Pressure levels for activation of the pressure relief safety device shall be: minimum: pressure equivalent to 105 % of the pressure at maximum survival temperature, maximum
48、: pressure equivalent to the test pressure (7.2.3). 7.3.2 Fire extinguisher without a pressure-relief safety device In case of over pressure, no mechanical element shall be ejected from the fire extinguisher and the fire extinguisher shall remain in its bracket. 7.4 Pressure indicating device The re
49、ading range of the pressure indicating device shall comprise (see Figure 1): a zero reference (to indicate zero pressure). If there is a needle stop, it shall be below the zero reference. a green zone (4) corresponding to the pressures of the whole operating temperature range in accordance with Figure 1. BS EN 4649:2009EN 4649:2009 (E) 10 Key 1 Stop 2 Red 3 Rounded-off to 0,5 bar 4 Green P(T min.)Pressure at
