1、BRITISH STANDARD BS EN 464:1994 Incorporating Amendment No. 1 Protective clothing Protection against liquid and gaseous chemicals, including liquid aerosols and solid particles Test method: Determination of leak-tightness of gas-tight suits (Internal Pressure Test) The European Standard EN 464:1994
2、has the status of a British Standard UDC 614.895.5:687.174:614.878:620.165.29BSEN464:1994 This British Standard, having been prepared under the directionof the Personal SafetyEquipment Standards Policy Committee, was publishedunder the authority ofthe Standards Board and comesinto effect on 15 Octob
3、er 1994 BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference PSM/36 Draft for comment 91/39590 DC ISBN 0 580 22378 7 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, c
4、omprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standard Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Nor
5、mung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norge
6、s Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd
7、. No. Date Comments 8619 May 1995 Indicated by a sideline in the marginBSEN464:1994 BSI 10-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Introduction 3 1 Scope 3 2 Definitions 3 3 Principle 3 4 Test apparatus 3 5 Procedure 3 6 Test report 4 Nationa
8、l annex NA (informative) Committees responsible Inside back coverBSEN464:1994 ii BSI 10-1999 National foreword This British Standard has been prepared under the direction of the Personal Safety Equipment Standards Policy Committee and is the English language version of EN464:1994 Protective clothing
9、 Protection against liquid and gaseous chemicals, including liquid aerosols and solid particles Testmethod:Determination of leak-tightness of gas-tight suits (Internal Pressure Test) published by the European Committee for Standardization (CEN). EN 464 was produced as a result of international discu
10、ssions in which the UnitedKingdom took an active part. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal
11、 obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, the EN title page, pages2to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the
12、amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 464 June 1994 UDC 614.895.5:687.174:614.878:620.165.29 Descriptors: Personal protective equipment, protective clothing, gas permeability, gas permeability tests, leak detection English version Protective c
13、lothing Protection against liquid and gaseous chemicals, including liquid aerosols and solid particles Test method: Determination of leak-tightness of gas-tight suits (Internal Pressure Test) Vtements de protection Protection contre les produits chimiques liquides et gazeux, y compris les arosols li
14、quides et les particules solides Mthode dessai: Dtermination de ltanchit des combinaisons tanches au gaz (essai de pression interne) Schutzkleidung Schutz gegen flssige und gasfrmige Chemikalien, einschlielich Flssigkeitsaerosole und feste Partikel Prfverfahren: Bestimmung der Leckdichtigkeit von ga
15、sdichten Anzgen (Innendruckprfverfahren) This European Standard was approved by CEN on 1994-06-20. 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-t
16、o-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat 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
17、 the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlan
18、ds, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 464:1994 EEN464:19
19、94 BSI 10-1999 2 Foreword This European Standard has been prepared by the Technical Committee CEN/TC162, Protective clothing including hand and arm protection and lifejackets, of which the secretariat is held by DIN. This European Standard has been prepared under a mandate given to CEN by the Europe
20、an Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). 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 December1994, and conflicting nationa
21、l standards shall be withdrawn at the latest by December1994. According to the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portu
22、gal, Spain, Sweden, Switzerland and UnitedKingdom.EN464:1994 BSI 10-1999 3 Introduction Gas-tight chemical protective clothing is worn in conjunction with appropriate respiratory protective devices, in order to isolate the body of the wearer from the environment. Although the danger to the wearer ar
23、ises from leakage in an inward direction, this test method assesses the outward leakage of air after the gas-tight suit has been inflated so as to stretch the material of construction, thereby enabling the test method to be capable of detecting very small imperfections, e.g. holes, splits or tears.
24、1 Scope This European Standard describes a test method to assess the resistance of a gas-tight suit to the penetration of gases through, for example, essential openings, fastenings, seams, overlaps between items, pores and any imperfections in the materials of construction. 2 Definitions For the pur
25、poses of this standard the following definitions apply. 2.1 assemblage a permanent fastening between two or more different garments, or between chemical protective clothing and accessories, obtained, for example by sewing, welding, vulcanizing, gluing 2.2 gas-tight suit a one-piece garment with hood
26、, gloves and boots which, when worn with self-contained or air-line breathing apparatus provides the wearer a high degree of protection against harmful liquids, particles and gaseous or vapour contaminants 2.3 join a non-permanent fastening between two different garments, or between chemical protect
27、ive clothing and accessories 2.4 penetration the process by which chemical flows through holes or essential openings in the material. The holes may be the result of mechanical damage 2.5 connection an assemblage or join 3 Principle After the suit has been inflated to a defined pressure, the extent o
28、f the subsequent leakage of air is assessed by recording the pressure reached after a defined period of time. NOTEGarment users should appreciate that the test does not simulate penetration by gases in an inward direction (see the explanation given in the introduction). 4 Test apparatus 4.1 A source
29、 of compressed air, supplying air at the ambient temperature of testing area which must be within the range (20 5) C. 4.2 Pressure measurement device, with the capability of measuring up to(1800 30)Pa. 4.3 Vent valve closure components, such components may be plugs or other means that are to be supp
30、lied for test purposes by the manufacturer. 4.4 Stop clock or appropriate timing device, capable of measuring to the nearest second. 5 Procedure 5.1 Lay out the suit including gloves and boots, and full facemask if appropriate, on a suitable flat and clean surface away from any sources of heat and/o
31、r currents of air. 5.2 Remove any creases and folds in the suit as far as practicable. 5.3 Leave the suit for a minimum of 1 h at ambient temperature(20 5) C. 5.4 Make an inflation connection. 5.5 Carefully blank off the valves etc., with appropriate means of closure supplied by the manufacturer. 5.
32、6 Using compressed air, inflate the suit carefully to a pressure of (1750 50)Pa. 5.7 Maintain the pressure at (1700 50)Pa for10min by the addition of air, if necessary, and at the same time ensure that any creased areas are unfolded and that the suit is stretched as appropriate. NOTEDuring this peri
33、od the temperature is stabilized and the pressure throughout the suit reaches equilibrium. 5.8 After the period of10min has elapsed (see5.7), adjust the pressure in the suit to(1650 30)Pa. 5.9 Allow further6min to elapse. Note and record the pressure in the suit in pascals. NOTEPay careful attention
34、 to the cleanliness and the refitting of valves which have been obstructed or removed to carry out the test, to ensure that they function satisfactorily after the test.EN464:1994 4 BSI 10-1999 6 Test report The test report shall include the following information: a) that the test was carried out in
35、accordance with this standard; b) the manufacturer/supplier and any identification mark c) the pressure recorded in5.9 and the test temperature; d) any further qualifying remarks and observations.BSEN464:1994 BSI 10-1999 National annex NA (informative) Committees responsible The United Kingdom parti
36、cipation in the preparation of this European Standard was entrusted by the Personal Safety Equipment Standards Policy Committee (PSM/-) to Technical Committee PSM/36 upon which the following bodies were represented: Association of the British Pharmaceutical Industry British Agrochemicals Association
37、 Ltd. British Clothing Industry Association British Occupational Hygiene Society British Rubber Manufacturers Association Ltd. British Textile Confederation British Textile Technology Group British Wood Preserving and Damp-proofing Association Chemical Industries Association Chief and Assistant Chie
38、f Fire Officers Association Ergonomics Society Health and Safety Executive Home Office Industrial Safety (Protective Equipment) Manufacturers Association Institute of Occupational Hygienists Made-up Textiles Association Ministry of Agriculture, Fisheries and Food Ministry of Defence National Associa
39、tion of Glove Manufacturers Trades Union CongressBS EN 464:1994 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It i
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