BS EN 381-2-1995 Protective clothing for users of hand-held chain saws - Test methods for leg protectors《手持式链锯使用者防护服 腿保护设备试验方法》.pdf

《BS EN 381-2-1995 Protective clothing for users of hand-held chain saws - Test methods for leg protectors《手持式链锯使用者防护服 腿保护设备试验方法》.pdf》由会员分享，可在线阅读，更多相关《BS EN 381-2-1995 Protective clothing for users of hand-held chain saws - Test methods for leg protectors《手持式链锯使用者防护服 腿保护设备试验方法》.pdf（14页珍藏版）》请在麦多课文档分享上搜索。

1、BRITISH STANDARD BS EN 381-2: 1995 Protective clothing for users of hand-held chain saws Part 2: Test methods for leg protectors The European Standard EN 381-2:1995 has the status of a British StandardBSEN381-2:1995 This British Standard, having been prepared under the directionof the Health and Saf

2、etySector Board, was published underthe authority ofthe Standards Board and comes into effect on 15 November 1995 BSI 06-1999 The following BSI references relate to the work on this standard: Committee reference PSM/34 Draft for comment 90/44678 DC ISBN 0 580 24656 6 Committees responsible for this

3、British Standard The preparation of this British Standard was entrusted to Technical Committee PSM/34, Clothing for protection against hazards, upon which the following bodies were represented: Amalgamated Engineering Union Association of Consulting Scientists British Clothing Industry Association B

4、ritish Leather Confederation British Marine Industries Federation British Mountaineering Council British Plastics Federation British Textile Confederation British Textile Technology Group Building Employers Confederation Chartered Institute of Marketing Chemical Industries Association Chief and Assi

5、stant Chief Fire Officers Association Confederation of British Wool Textiles Limited Engineering Equipment and Materials Users Association Ergonomics Society Health and Safety Executive Home Office Industrial Safety (Protective Equipment) Manufacturers Association Institute of Occupational Hygienist

6、s Institute of Wastes Management Iron and Steel Trades Confederation London Regional Transport Made-up Textiles Association Ministry of Defence National Joint Council for the Building Industry (operatives side) SATRA Footwear Technology Centre Textile Distributors Association Textile Research Counci

7、l (FCRA) Textile Services Association Ltd. Trades Union Congress The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Arboricultural Association Association of Professional Foresters British Chainsaw Association Consumer Policy Committee of BS

8、I Department of Trade and Industry (Consumer Safety Unit, CA Division) Forestry Commission Garden Machinery Association Hire Association Europe National Association of Glove Manufacturers National Farmers Union Royal Society for the Prevention of Accidents Safety Equipment Distributors Association T

9、imber Growers United Kingdom Amendments issued since publication Amd. No. Date CommentsBSEN381-2:1995 BSI 06-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 381-2 3 List of references Inside back coverBSEN381-2:1995 ii BSI 06-1999 National fo

10、reword This British Standard has been prepared by Technical Committee PSM/34, and is the English language version of EN381-2:1995 Protective clothing for users of hand-held chain saws Part 2: Test methods for leg protectors, published by the European Committee for Standardization (CEN). EN381-2 was

11、produced as a result of international discussions in which the UK 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 i

12、tself confer immunity from legal obligations. Cross-references Publication referred to Corresponding British Standard EN 340:1993 BS EN 340:1993 Protective clothing. General requirements BS EN 381 Protective clothing for users of hand-held chain saws EN 381-1:1993 Part 1:1993 Test rig for checking r

13、esistance to cutting by a chain saw EN 381-5:1995 Part 5:1995 Requirements for leg protectors ISO 5077:1984 BS EN 25077:1994 Textiles Determination of dimensional change in washing and drying ISO 6330:1984 BS EN 26300:1994 Textiles. Domestic washing and drying procedures for textile testing Summary

14、of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 8, 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 amendment table o

15、n theinside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 381-2 April 1995 ICS 13.340.10 Descriptors: Personal protective equipment, work clothing, accident prevention, protective clothing, legs, chain saws, shock resistance, tests, specifications English version Protective clothi

16、ng for users of hand-held chain saws Part 2: Test methods for leg protectors Vtements de protection pour utilisateurs de scies chaine tenues la main Partie2: Mthodes dessai pour protge-jambes Schutzkleidung fr die Benutzer von handgefhrten Kettensgen Teil2: Prfverfahren fr Beinschutz This European S

17、tandard was approved by CEN on1994-11-15. 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 su

18、ch 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 the responsibility of a CEN member into its own language

19、 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, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and Unit

20、ed Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995 All rights of reproduction in any form and by any means reserved in all countries to CEN and its members. Ref. No. EN 381

21、-2:1995 EEN381-2:1995 BSI 06-1999 2 Foreword This European Standard has been prepared by the Technical Committee CEN/TC162, Protective clothing including hand and arm protection and lifejackets, the secretariat of which is held by DIN. This European Standard has been prepared under a mandate given t

22、o CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive89/686/EEC. For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this standard. This European Standard shall be given the status of a

23、national standard, either by publication of an identical text or by endorsement, at the latest by October1995, and conflicting national standards shall be withdrawn at the latest by October 1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this E

24、uropean Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword 2 0 Introduction 3 1 Scope 3 2 Normative references 3 3 Definitions 3 3.1 Front (of

25、 a leg protector) 3 3.2 Rear (of a leg protector) 3 4 Test specimens 3 4.1 Number of test specimens 3 4.2 Size designation of test specimens 4 5 Pretreatment 4 6 Testing for dimensional change 4 7 Checking of protective coverage 4 8 Testing of resistance to cutting 5 8.1 Purpose of testing 5 8.2 Tes

26、t specimens 5 8.3 Apparatus 5 8.4 Mounting of test specimens 5 8.5 Test procedure 5 8.5.1 Positions 5 8.5.2 Number of cuts 5 8.5.2.1 Design A and design B 5 8.5.2.2 Design C 5 8.5.3 Chain speed 5 9 Testing of attachment 5 9.1 General 5 9.2 Test specimens 5 9.3 Apparatus 5 9.4 Test procedure 6 10 Tes

27、t report 6 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives 8 Figure 1 Positions for application and angles of cut 6 Figure 2 Grab equipment 7EN381-2:1995 BSI 06-1999 3 0 Introduction This European Standard forms part of

28、a series concerned with personal protective equipment designed to protect against the risks arising from the use of hand-held chain saws. No personal protective equipment can ensure a100% protection against cutting from a hand-held chain saw. Nevertheless, experience has shown that it is possible to

29、 design protective clothing which offers a certain degree of protection. Different functional principles may be applied in order to give protection. These include: a) chain slipping: on contact the chain does not cut the material; b) clogging: fibres are drawn with the chain into the drive sprocket

30、and block chain movement; c) chain braking: fibres have a high resistance to cutting and absorb rotational energy, thereby reducing the chain speed. Often more than one principle is applied. 1 Scope This European Standard Part 2 specifies the test methods to be used to assess the resistance of leg p

31、rotectors to cutting by hand-held chain saws and other properties. 2 Normative references This European Standard incorporates by dated or undated references, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed

32、 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 references the latest edition of the publication referred to applies. ISO 3175:1979, Textiles Determ

33、ination of dimensional change on dry cleaning in perchloroethylene Machine method. ISO 3759:1984, Textiles Preparation, marking and measuring of fabric specimens and garments in tests for determination of dimensional change. ISO 5077:1984, Textiles Determination of dimensional change in washing and

34、drying. ISO 5082:1982, Textiles Woven fabrics Determination of breaking strength Grab method. ISO 6330:1984, Textiles Domestic washing and drying procedures for textile testing. EN 340:1993, Protective clothing General requirements. EN 381-1:1993, Protective clothing for users of hand-held chain saw

35、s Part 1: Test rig for testing resistance to cutting by a chain saw. EN 381-5:1995, Protective clothing for users of hand-held chain saws Part 5: Requirements for leg protectors. 3 Definitions For the purposes of this standard the following definitions apply. 3.1 front (of a leg protector) the forwa

36、rd 50 % of the leg circumference 3.2 rear (of a leg protector) the backwards 50 % of the leg circumference NOTEDepending upon design and construction, and due to many layers of clogging material, it may be difficult to establish the front and the rear of a leg protector. It is nevertheless of great

37、importance to establish the front and the rear before pretreatment and testing. 4 Test specimens 4.1 Number of test specimens For the design of EN381-5 in normal cases the total number of test specimens for testing are as follows. Design A and B a) If only cleaned by washing: four pairs of complete

38、leg protectors. b) If only cleaned by dry-cleaning: four pairs of complete leg protectors. c) If cleaned both by washing and dry-cleaning: eight pairs of complete leg protectors. Depending on construction and pretreatment more test specimens may be needed. Design C a) If only cleaned by washing: fiv

39、e pairs of complete leg protectors. b) If only cleaned by dry-cleaning: five pairs of complete leg protectors. c) If cleaned both by washing and dry-cleaning: ten pairs of complete leg protectors. Depending on construction and pretreatment more test specimens may be needed. It is allowable to use th

40、e same test specimens for cutting as were used for testing dimensional change.EN381-2:1995 4 BSI 06-1999 4.2 Size designation of test specimens For trousers the size designation according to Table1 of EN340:1993 shall be: waist girth92 to96. For other leg protectors a size designation comparable to

41、waist girth93 shall be chosen. 5 Pretreatment Except in the specific cases detailed below, all the test specimens are washed and dried5times before testing. This washing shall be according to procedure 2 A of ISO6330 and the drying by tumble-drying at a temperature not exceeding70 C (procedure E). E

42、xceptions to this treatment are permitted in the following cases. a) Where the leg protectors are marked as unsuitable for washing, but suitable for dry-cleaning. In such cases, the test specimens shall be dry-cleaned five times before testing. In principle the dry-cleaning shall be performed in acc

43、ordance with the conditions described in9.1 “Process for normal materials” of ISO3175:1979, i.e.using conditioned test specimens, perchloroethylene with surfactant, addition of emulsified water, cleaning for15minutes at(30 3) C, draining and extracting, rinsing for5minutes with pure solvent, and dra

44、ining and final extraction. Tumble dry with an outlet temperature not exceeding60 C. No restorative finishing procedure. b) Where the test specimens are marked as suitable for both washing and dry-cleaning. In such cases, the test shall be carried out on both washed test specimens and dry-cleaned te

45、st specimens, (2 sets of test specimens). c) Where the test specimens are marked as unsuitable for tumble-drying. In such cases, the test specimens shall be washed by the method described above, then line-dried (procedure A of ISO3175). 6 Testing for dimensional change Number of test specimens: one

46、test specimen for each pretreatment. Test procedure: the test procedure for determination of dimensional stability in washing and drying as stated inISO6330 and following the manufacturers care labelling regarding cleaning information. One test specimen shall be subjected to five washing processes,

47、or the alternative processes mentioned under 5 a), 5 b) or 5 c). After each washing the leg protectors shall be reshaped by hand, but not reshaped by ironing. Dimensional change is assessed in accordance with ISO3759 for measuring, ISO5077 for washing and ISO3175 for dry-cleaning, where it is noted

48、that complete garments are used as test specimens. Figure2 inISO3759 is representative for the measurements with the addition that the measurements shall be made at a place with protective material. During measurement of L and W, distances representing length and width, the leg protectors shall be s

49、tretched with a force of20N. This can be done with a line load for L and a width-stretcher for W. L and W shall be measured with an uncertainty of measurement of 5mm. The line load of20N shall be applied between the waist and bottom of the leg protector leg, and it shall be applied through at least3clamps in each end, whereby the load is distributed. The clamps shall in the bottom fix to protective padding. The width-stretcher shall stretch the leg protector leg over a distance of500mm with a force of20N. 7 Checking