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1、BRITISH STANDARD BS EN 168:1995 Personal eye-protection Non-optical test methods The European Standard EN 168:1995 has the status of a British Standard ICS 13.340.10 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:05:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 168:1995 This British
2、 Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 December 1995 BSI 12-1998 The following BSI references relate to the work on this standard: Committee reference PH/2 Draft for com
3、ment 89/39390 DC ISBN 0 580 24779 1 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PH/2, Eye protection, upon which the following bodies were represented: Association of Consulting Scientists British College of Optometri
4、sts British Foundry Association British Glass Manufacturers Confederation British Iron and Steel Producers Association British Plastics Federation British Safety Industry Federation Castings Technology International Department of Trade and Industry Electricity Association Engineering Equipment and M
5、aterials Users Association Federation of Manufacturing Opticians Flat Glass Manufacturers Association Health and Safety Executive Institution of Gas Engineers Institution of Mechanical Engineers Institution of Occupational Safety and Health Light Metal Founders Association Manufacturing Science Fina
6、nce Ministry of Defence National Physical Laboratory National Radiological Protection Board Safety Equipment Association Safety Equipment Distributors Association Trades Union Congress Zinc Alloy Die Casters Association Co-opted Member Amendments issued since publication Amd. No.DateComments License
7、d Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:05:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 168:1995 BSI 12-1998i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 1685 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:05:20 GMT+00:
8、00 2006, Uncontrolled Copy, (c) BSI BS EN 168:1995 ii BSI 12-1998 National foreword This British Standard has been prepared by Technical Committee PII/2 and is the English language version of EN 168 Personal eye-protection Non-optical test methods, published by the European Committee for Standardiza
9、tion (CEN). EN 168 was produced as a result of international discussions in which the United Kingdom took an active part. It is based on ISO 4855:1981 Personal eye-protectors Non-optical test methods. The scope of this standard includes matters which are given in Appendices A, B and F to N inclusive
10、 of BS 2092:1987. It does not include matters which are given in either the specification clauses of BS 2092 or Appendices C, D and E of BS 2092:1987. The specification clauses of BS 2092: 1987, together with the schedule of tests given in Appendix E of BS 2092:1987, are replaced by those given in B
11、S EN 166. The optical test methods given in Appendices C and D of BS 2092:1987 are replaced by those given in BS EN 167. This British Standard, together with BS EN 166:9961) and BS EN 167:1995, replaces BS 2092:1987, which will be withdrawn on publication of BS EN 166. A British Standard does not pu
12、rport 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 obligations. Summary of pages This document comprises a front cover, an inside front
13、 cover, pages i and ii, the EN title page, pages 2 to 20, 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 on the inside front cover. 1) In preparation. Cross-references
14、Publication referred toCorresponding British Standard EN 165:1996BS EN 165 Personal eye-protection Vocabularya EN 166:1996BS EN 166 Personal eye-protection Specificationsa EN 167:1995BS EN 167 Personal eye-protection Optical test methodsa a In preparation. Licensed Copy: sheffieldun sheffieldun, na,
15、 Fri Nov 17 08:05:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 168 May 1995 ICS 13.340.10 Descriptors: Safety, accident prevention, eyes, eye-glasses, oculars, tests, specifications English version Personal eye-protection Non-optical test methods
16、 Protection individuelle de loeil Mthodes dessais autres quoptiques Persnlicher Augenschutz Nichtoptische Prfverfahren This European Standard was approved by CEN on 1994-05-30. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eu
17、ropean 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 any CEN member. This European Standard exists in three official versions (Engli
18、sh, 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. CEN members are the national standards bodies of Austria, Belgium, Denmark, Fi
19、nland, 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 Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050
20、Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members. Ref. No. EN 168:1995 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:05:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 168:1995 BSI 12-1998 2 Forewo
21、rd This European Standard has been prepared by the Technical Committee CEN/TC 85, Eye-protection equipment, of which the secretariat is held by AFNOR. 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
22、by November 1995, and conflicting national standards shall be withdrawn at the latest by November 1995. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). Ac
23、cording to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Cont
24、ents Page Foreword2 IScope5 2Normative references5 3Test for increased robustness5 3.1Unmounted oculars5 3.2Complete eye-protectors5 4Test for minimum robustness6 4.1Apparatus6 4.2Procedure7 5Test for stability at elevated temperature7 5.1Apparatus7 5.2Procedure8 6Test for resistance to ultraviolet
25、radiation8 6.1Apparatus8 6.2Procedure8 7Test for resistance to ignition8 7.1Apparatus8 7.2Procedure8 8Test for resistance to corrosion8 9Test for resistance to high-speed particles8 9.1Apparatus8 9.2Procedure9 10Test for protection against molten metals9 Page 10.1 Test for non-adherence of molten me
26、tals9 10.2 Test for area of coverage of face-shields9 11Test for resistance to penetration by hot solids12 11.1 Apparatus12 11.2 Procedure12 12Test for protection against droplets and liquid splashes12 12.1 Test for protection against droplets (for goggle type eye-protectors)12 12.2 Test for protect
27、ion against liquid splashes (for face-shields)13 13Test for protection against large dust particles13 13.1 Apparatus13 13.2 Procedure13 13.3 Evaluation15 14Test for protection against gases and fine dust particles15 14.1 Apparatus15 14.2 Procedure15 14.3 Evaluation15 15Test for resistance to surface
28、 damage by fine particles15 15.1 Apparatus15 15.2 Samples16 15.3 Procedure17 15.4 Evaluation17 16Test for resistance to fogging of oculars18 16.1 Apparatus18 16.2 Samples18 16.3 Procedure and evaluation18 17Head-form19 Figure 1 Holding device for oculars for the increased robustness test6 Figure 2 A
29、pparatus for minimum robustness (Static deformation) test7 Figure 3 Example of apparatus for assessment of non-adherence of molten metal10 Figure 4 Apparatus for assessment of area of coverage of face shields11 Figure 5 Apparatus for testing resistance to penetration of hot solids12 Figure 6 Test ap
30、paratus for protection against large dust particles14 Figure 7 Example of photoelectric reflectometer14 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:05:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 168:1995 BSI 12-19983 Page Figure 8 Falling sand test apparatus16 Figure 9 Outlet nozz
31、le for falling sand test apparatus (manufactured from brass with perforated plates held centrally by three connecting pieces)17 Figure 10 Apparatus for determining the resistance to fogging of oculars19 Figure 11 Reference head-form21 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:05:20 G
32、MT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:05:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 168:1995 BSI 12-19985 1 Scope This standard specifies non-optical test methods for eye-protectors, the requirements for which are contained
33、in other European Standards. Alternative test methods may be used if shown to be equivalent. The optical test methods are given in EN 167. A definition of terms is given in EN 165. 2 Normative references This European Standard incorporates, by dated or undated reference, provisions from other public
34、ations. These normative 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
35、. For undated references the latest edition of the publication referred to applies. EN 165, Personal eye-protection Vocabulary. EN 166:1995, Personal eye-protection Specifications. EN 167:1995, Personal eye-protection Optical test methods. ISO 565, Test sieves Metal wire cloth, perforated metal plat
36、e and electroformed sheet Nominal sizes of openings. 3 Test for increased robustness New specimens shall be used for this test. 3.1 Unmounted oculars 3.1.1 Apparatus The support for the ocular (see Figure 1) shall be a steel or rigid plastic cylinder with an internal diameter of (35,0 0,1) mm and an
37、 outside diameter of (41,0 0,1) mm. The cylinder shall be inserted into, or be an integral part of a steel base. The ocular shall be cushioned by a silicone seating ring firmly attached to the top of the tube. This seating ring shall have a nominal thickness of 3 mm and the same inside and outside d
38、iameters as the tube. The silicone seating material shall have a hardness of (40 5) I.R.H.D. The combined mass of the support shall be at least 12 kg. A load ring of mass (250 5) g is placed on the ocular. The ring has an inside diameter the same as that of the support tube, and any convenient outsi
39、de diameter. A silicone seating ring having the same dimensions and hardness as the support tube seating ring is placed between the load ring and the ocular. A piece of carbon paper on a piece of white paper is placed at the base of the 1,5 mm deep cavity in the ocular support (see Figure 1). For cu
40、rved oculars with a cylindrical component, the test support tube and load ring shall be curved to conform to the convex and concave surfaces of the ocular respectively. If the ocular is of insufficient dimensions to enable its entire periphery to be adequately supported, suitable adaptor sleeves sha
41、ll be used. 3.1.2 Procedure Centre the intended points of impact of the ocular on the support tube. Adjust the apparatus so that a 22 mm nominal diameter steel ball of 43 g minimum mass falling from strikes the ocular within a 5 mm radius from the centre of the support tube. This height will provide
42、 an impact speed of approximately 5,1 m/s. The points of impact are at the geometric centre of oculars for covering one eye and at the two points of vision for oculars covering both eyes. The points of vision are on the approximate line of sight and nominally 64 mm apart (corresponding to the centre
43、s of the eye). The test shall be carried out at (23 5) C. 3.2 Complete eye-protectors 3.2.1 Apparatus 3.2.1.1 Head-form, as defined in clause 17. 3.2.1.2 Either a device enabling a 22 mm nominal diameter steel ball of 43 g minimum mass to be projected at a specified point on the eye-protector at a s
44、peed of approximately 5,1 m/s or a device enabling a 6 mm nominal diameter steel ball of 0,86 g minimum mass to be projected at the specified point at 3.2.2 Procedure The eye-protector to be tested shall be placed on the head-form in the position corresponding to normal use. A sheet of carbon paper
45、on top of a sheet of white paper is inserted between the eye-protector and the head-form. The head-form and eye-protector assembly is positioned in the test apparatus. The ball is projected at the points of impact defined in 3.2.3. 1 3 0 0.03 , m 12,0 +0,6 0 m/s. Licensed Copy: sheffieldun sheffield
46、un, na, Fri Nov 17 08:05:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 168:1995 6 BSI 11-1998 The impacts are carried out in the following conditions: a) with the eye-protector heated to (55 2) C and maintained at this temperature for at least 1 h; b) with the eye-protector cooled to a temperatur
47、e of ( 5 2) C and maintained at this temperature for at least 1 h. New eye-protectors shall be used for each individual point of impact and for each temperature condition. The impact shall be applied within 30 s of temperature conditioning. The tests shall be conducted at an ambient temperature of (
48、23 5) C. 3.2.3 Points of impact There are four impact points, and these are defined with respect to the head-form rather than the eye-protector. The ball is aimed at these impact points with the eye-protector mounted in the normal use position. The impact points shall be considered as any single poi
49、nt within a 10 mm radius of one of four impact centres. These impact centres are denoted by an asterisk (*) in Figure 11. With respect to the test schedule contained in Table 11 of EN 166:1995, the four impact points are defined as follows: 1 is the left eye frontal 2 is the right eye frontal 3 is the left eye side 4 is the right eye side. For frontal impacts at the two eye centres the ball is projected normal to the vertical axis of the head-form and parallel to its optical ax
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