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1、- B S I BS*EN*348 01 = Lb24bb 03b0453 OL5 -1 BRITISH STANDARD Protective clothing Determination of behaviour of materials on impact of small splashes of molten metal The European Standard EN 348 : 1992 has the status of a British Standard Wtements de protection Dtermination du comportement des mater
2、iaux au contact avec des petites projections de mtal liquide Schutzkleidung Verhaltensbestimmung von Materialien hei Einwirkung von kleinen Spritzern geschmolzenen Metalls BS EN 348: 1992 - B S I BS*EN*3U O1 m 1b24bb 03b0454 T51 I BS EN 348 : 1992 rlfr B l l l l t l 1 W)2 Cooperating organizations D
3、at.e The European Committee foi Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries. Austria Belgium Denmark Finland France Gennany Greece Iceland Ireland lraly Luxembourg Set lierlands Portugal
4、 Spain Sweden Su-i t zerland I-nited Kingdom S0rWy esterreichisches Normungsinstitut Institut belge de normalisation Dansk St andardiseringsmad Suomen Standardisoimisliito, r. y. Association francaise de normalisation Deutsches Institut fr Normung e.V. Hellenic Organization for Standardization Techn
5、ological Institute of Iceland National Standards Authority of Ireland Ente Nazionale Italiano di Unificazione Inspection du Travail et des Mines Nederlands Normalisatie-instituut Norges Standardiseringsforbund Instituto Portugus da Qualidade Asociacin Espaola de Normalizacin y Certificacin Standardi
6、seringskommissionen i Sverige Association suisse de normalisation British Standards Institution - E S 1 BS*EN*398 O1 m 1b24bb9 0360455 998 m BS EN 348 : 1992 Contents Page Cooperating organizations Inside front cover National foreword 1 Foreword 2 Method O introduction 3 1 scope 3 2 Normative refere
7、nces 3 3 Definitions and symbols 3 4 Principle 3 5 Apparatus 3 6 Specimen 9 7 Procedure 9 8 Precision 10 9 Test report 10 Figures 1 4 3 Dropguide 6 General arrangement of apparatus for producing molten metal drops 2 Device for producing molten metal drops 5 4 Sensor support block 7 5 Specimen suppor
8、t 8 6 %st specimen 9 National annexes National annex NA (informative) Committees responsible National annex NB (informative) Cross-references Inside back cover Inside back cover National foreword This British Standard has been prepared under the direction of the Personal Safety Equipment Standards P
9、olicy Committee and is the English language version of EN 348 : 1992 Protective clothing - Determination of behaviour o f muterials on impact o f small splashes o f molten metal, published by the European Committee for Standardization (CEN). EN 348 was produced as a result of international discussio
10、ns in which the United Kingdom took an active part. Compliance with a British Standard does not of itself confer immunity from legal obligations. i - - ES1 BS*EN*348 01, = Lb24bb9 0360456 824 M EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 348 September 1992 UDC 6 i 4 395.5: 6 14.873.6: 620.
11、I Descriptors: personal protective equipment, protective clothing, thermal Protection, drip proof protection, weld metal, testing conditions English version Protective clothing - Determination of behaviour of materials on impact of small splashes of molten metal Vtements de protection - Dtermination
12、 du comportement des matriaux au contact avec des petites projections de mtal liquide Schutzkleidung - Verhaltensbestimmung von Materialien bei Einwirkung von kleinen Spritzern geschmolzenen Metalls This European Standard was approved by CEN on 1992-09-14. CEN members are bound to comply with the CE
13、NKENELEC 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 Central Secretariat or to
14、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 Central Secretariat has the same status as the official versions.
15、 CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation
16、Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1992 Copyright reserved to CEN members Ref. No. EN 348 : 1992 E - B S I BS*EN*348 01 m Lb24bb9 03bO457 760 m Page 2 EN 348 : 1992 Foreword This European Standard was prepared by CEN/TC 162 Protective clothing inc
17、luding hand and arm protection and lifejackets of which the secretariat is held by DIN. 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 March 1993, and conflicting national standards shall be with
18、drawn at the latest by March 1993. The standard was approved and in accordance with the Common CENXENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Net
19、herlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. - B S I BS*EN*348 O1 m 1b24bb 03b0458 bT m O Introduction Clothing designed to protect the wearer against small splashes of molten metal is often submitted to high thermal loads. This European Standard forms a part of a series c
20、oncerned with clothing designed to protect against heat and fire. The diversity of the conditions in which splashes of molten metal may come into contact with materials used for protective clothing makes it difficult to evaluate the hazards that may arise under conditions of use. Experience has show
21、n that the most important protective function is resistance to heat transfer, through the protective clothing, from molten metal drops which impinge on but slide off the clothing surface. The test method described in this European Standard allows this heat transfer to be assessed. 1 Scope This Europ
22、ean Standard specifies a test method designed to evaluate the behaviour of materials used for protective clothing when such materials are struck by small liquid metal splashes, especially when molten steel particles are projected against the material. It applies to any pliable material, or assembly
23、of materials, designed to protect workers against small splashes of molten metal. The results obtained by this method enable the behaviour of different materials which have undergone this test under standardized conditions to be compared. They do not permit conclusions with respect to contacts with
24、large splashes of molten cast iron or other metal to be drawn, neither will they allow the behaviour of complete garments under industrial conditions to be predicted. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These n
25、ormative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated r
26、eferences the latest edition of the publication referred to applies. IS0 139 : 1973 Standard atmospheres for IS0 636 : 1989 Barefiller rods for oxy-acetylene NF C 42-330 Electrical measuring conditioning and testing and tujqsten inert gas arc welding instmnieiits - Platinum resistance temperature se
27、nsors - Ikfrenee table wild tolerance Page 3 EN 348 : 1992 3 Definitions and symbols For the purposes of this European Standard the following definitions and symbols apply. 3.1 drop A quantity of molten metal produced from the fusion of a metal rod by a welding torch, falling under the simultaneous
28、action of its own weight and of the air movement produced by the welding torch. 3.2 symbols f Frequency of drops expressed as number of drops per minute. m Mass of drop, expressed in grams. p Linear density of the steel rods, expressed in grams per centimetre. z Number of 0,5 g drops, produced at th
29、e frequency of 20 per minute, required to raise the temperature of the sensor behind the specimen by 40 K, the sensor temperature being within f 2 K of ambient temperature at the beginning of the test. !as IS0 139 : 193 ! I BSI BS*EN*348 O1 1624669 0360467 bOT = BS EN 348: 1992 BSI 2 Park Street Lon
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38、yright should be made to the Copyright Manager, Publications at Milton Keynes. SBN O 580 21104 5 PSM!:)F! E S 1 BS*EN*348 01 m Lb24bb9 0360468 54b m AMD 7785 Amendment No. 1 published and effective from 15 June 1993 to BS EN 348 : 1992 Protective clothing Determination of behaviour of materials on impact of small splashes of molten metal NOTE. This amendment implements the Corrigendum, published in January 1993, to EN 348 : 1992 Correction Clause 5.1 i n h e 9, delete hand and substitute end. 930GO.5k-B P s m 5