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1、? ? ? ? ? ? ? ? ? ? ? ? Licensed Copy: x x, The University of Sheffield, 23/06/2009 11:35, Uncontrolled Copy, (c) BSI ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Licensed Copy: x x, The University of Sheffield, 23/06/2009 11:35, Uncontrolled Copy, (c) BSI BS EN 4649:2009 EUROPEAN STANDARD NORME EURO
2、PENNE EUROPISCHE NORM EN 4649 February 2009 ICS 13.220.10; 49.095 English Version Aerospace series - Handheld fire extinguishers with synthesis gases, for aircraft use - Technical specification and qualification conditions Srie arospatiale - Extincteurs portatifs pour aronefs aux agents gazeux de sy
3、nthse - Spcification technique et conditions de qualification Luft- und Raumfahrt - An Bord Handfeuerlscher - Lieferbedingungen und Qualifikationsbedingungen This European Standard was approved by CEN on 5 October 2008. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
4、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 Management Centre or to any CEN member. This European Stan
5、dard 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 Management Centre has the same status as the official versions. CEN members are the national st
6、andards 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
7、Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4649:2009: E Lic
8、ensed Copy: x x, The University of Sheffield, 23/06/2009 11:35, Uncontrolled Copy, (c) BSI BS EN 4649:2009 EN 4649:2009 (E) 2 Contents Page Foreword 3? Introduction .4? 1?Scope 5? 2?Normative references 5? 3?Terms and definitions .5? 4?Symbols and abbreviations 6? 5?Description .6? 6?Design .7? 7?Ch
9、aracteristics .8? 8?Qualification tests 12? 9?Manufacturing requirements 23? 10?Marking .26? 11?Maintenance .28? 12?Quality assurance 28? 13?Qualification .28? 14?Traceability .29? 15?Packaging .29? 16?Storage 29? 17?Recovery and recycling 29? Annex A (normative) Pressure and temperature diagram 30?
10、 Annex B (normative) Dielectric test diagram . 31? Annex C (normative) Technical index .33? Annex D (normative) Qualification tests .34? Licensed Copy: x x, The University of Sheffield, 23/06/2009 11:35, Uncontrolled Copy, (c) BSI ? BS EN 4649:2009 EN 4649:2009 (E) 3 Foreword This document (EN 4649:
11、2009) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-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 o
12、f the member countries of ASD, prior to its presentation to CEN. 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 2009, and conflicting national standards shall be withdrawn at the latest by
13、 August 2009. 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. According to the CEN/CENELEC Internal Regulations, the national standard
14、s organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portu
15、gal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: x x, The University of Sheffield, 23/06/2009 11:35, Uncontrolled Copy, (c) BSI ? BS EN 4649:2009 EN 4649:2009 (E) 4 Introduction This standard is implemented to define aeronautical requirements regard
16、ing 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 the Montreal protocol). If the extinguisher uses a synthesis gas under the terms of a waiver t
17、o 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 operating pressure up to 25 bars. Licensed Copy: x x, The University of Sheffield, 23/06/2009
18、11:35, Uncontrolled Copy, (c) BSI ? BS EN 4649:2009 EN 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 p
19、assenger 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 (i
20、ncluding 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 manag
21、ement 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 inspec
22、tion 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 Aircraft1
23、ED-14D/RTCA/DO-160, Environmental conditions and test procedures for airborne equipment 2 EASA Part 145, Maintenance Organisation Approvals3 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 pressure-relief safety device device which releases t
24、he 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 Pub
25、lished by: EUROCAE, 102 rue Etienne Dolet 92240 Malakoff. 3 Published by: European Aviation Safety Agency Postfach 10 12 53 D-50452 Koeln, Germany. Licensed Copy: x x, The University of Sheffield, 23/06/2009 11:35, Uncontrolled Copy, (c) BSI ? BS EN 4649:2009 EN 4649:2009 (E) 6 3.4 survival temperat
26、ure temperature to which the extinguisher may be exposed without compromising subsequent use in the 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 combusti
27、on of which normally leads to the formation of embers class B: these are fires involving liquids or 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 pressur
28、e, 1 bar is equal to 0,1 MPa IF Inspection File DF Definition File MF Manufacturing File P (T max.) Pressure 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
29、 temperature V Internal volume of the vessel 5 Description A handheld fire extinguisher consists of, 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 projec
30、tion device; a discharge hose if necessary; a pressure-relief safety device; a controlling device locking system; an indicator of not used. NOTE The bracket is independent of the extinguisher, but shall be qualified jointly with it. Licensed Copy: x x, The University of Sheffield, 23/06/2009 11:35,
31、Uncontrolled Copy, (c) BSI ? BS EN 4649:2009 EN 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 easily be removable from the fire extinguisher and its bracket except the controlling device locking syste
32、m. 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 resistance, operational shocks); climatic (temperature, altitude, humidity, salt mist); electromagnetic,
33、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 shall withstand the environmental and operating conditions. For this purpose, the designer shall determin
34、e 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 materials used to manufacture the vessels. The inspection documents shall provide the composition of the ma
35、terial 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 of 7.2. If a material other than metal is used, the manufacturer must show evidence that this material
36、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 used shall comply with the applicable standards and regulations in force. 6.5 Pressure-relief safety devi
37、ce 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 pressure rise principle. The design of this device shall comply with the requirements of 7.3.1. This de
38、vice 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 of over pressure. In this case, the provisions of 7.3.2 shall apply. Licensed Copy: x x, The University
39、 of Sheffield, 23/06/2009 11:35, Uncontrolled Copy, (c) BSI ? BS EN 4649:2009 EN 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 This dev
40、ice 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 Discharge ho
41、se 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 be in
42、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-ambiguous. 7
43、 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 temperat
44、ure 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. Licensed Copy: x x, The University of Sheffield, 23/06/2009 11:35, Uncontrolled Copy, (c) BSI BS EN 4649:2009 EN 4649:2009 (E) 9 7.2 Vesse
45、l 7.2.1 Thickness of the wall The thickness of the wall shall be such that regardless of the 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
46、dedicated area. 7.2.2 Mechanical properties The ratio shall be: m p0.2 R R 0,90 where Rp0.2 is the yield strength, see EN 10002-1; Rm is 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 pres