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1、BRITISH STANDARD BS EN 174:2001 Personal eye-protection Ski goggles for downhill skiing The European Standard EN 174:2001 has the status of a British Standard ICS 13.340.20; 97.220.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, F
2、ri Nov 17 08:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 174:2001 This British Standard, having been prepared under the direction of the Health and Environment Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 June 2001 BSI 06-2001
3、ISBN 0 580 37295 2 National foreword This British Standard is the official English language version of EN 174:2001. It supersedes BS EN 174:1997 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee PH/2, Eye protection, to Subcommittee PH/2/1, Sunglasses,
4、which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogu
5、e under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their corr
6、ect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor
7、 related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 18, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the
8、 document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 174 April 2001 ICS 13.340.20Supersedes EN 174:1996 Engl
9、ish version Personal eye-protection - Ski goggles for downhill skiing Protection individuelle de loeil - Masques pour le ski alpinPersnlicher Augenschutz - Skibrillen fr alpinen Skilauf This European Standard was approved by CEN on 19 February 2001. CEN members are bound to comply with the CEN/CENEL
10、EC 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 Management Centre or to any CEN
11、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 Management Centre has the same status as the official versions. CEN membe
12、rs are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATIO
13、N EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 174:2001 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:07:02 GMT+00:00 2006,
14、Uncontrolled Copy, (c) BSI Page 2 EN 174:2001 Contents Page Foreword3 1Scope 4 2Normative references 4 3Terms and definitions4 4Requirements for design and manufacture 4 4.1General requirements4 4.2Materials4 4.3Sit and fit.4 4.4Ventilation.5 5Other requirements5 5.1Optical requirements.5 5.1.1Field
15、 of vision.5 5.1.2Lens requirements.5 5.2Mechanical strength 7 5.3Protection against water and snow .7 5.4Resistance to ignition7 5.5Suitability for cleaning and care.7 5.6Optional specifications .8 5.6.1Resistance to surface damage by fine particles.8 5.6.2Resistance to fogging of oculars.8 5.6.3En
16、hanced infrared absorption of oculars .8 6Testing 8 6.1General remarks.8 6.2Field of vision.9 6.3Reduced luminance coefficient11 6.4Resistance to ultraviolet radiation.11 6.5Mechanical strength 11 6.5.1Apparatus .11 6.5.2Procedure .12 7Information supplied by the manufacturers13 Annex A (informative
17、) Uncertainty of measurement and results interpretation14 A.1Test report and uncertainty of measurement .14 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU directives.17 Bibliography18 Licensed Copy: sheffieldun sheffieldun, na, Fr
18、i Nov 17 08:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 174:2001 Foreword This European Standard has been prepared by Technical Committee CEN/TC 85, “personal eye-protection“ the secretariat of which is held by AFNOR. This European Standard replaces EN 174:1996. This European Standard
19、 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2001, and conflicting national standards shall be withdrawn at the latest by October 2001. This document has been prepared under a mandate given to CEN by the Eur
20、opean Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards org
21、anizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: shef
22、fieldun sheffieldun, na, Fri Nov 17 08:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 174:2001 1 Scope This European Standard is applicable to ski goggles which are used for eye-protection during downhill skiing and other downhill activities, like snowboard. For snow mobile use EN 13178
23、applies. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to
24、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 (including amendments). EN 165, Personal eye-protection Vocabulary. EN 167:20011), Persona
25、l eye-protection - Optical test methods. EN 168:20011), Personal eye-protection - Non-optical test methods. EN 1836:1997, Personal eye-protection - Sunglasses and sunglare filters for general use. EN 13178, Personal eye-protection - Eye protectors for snow mobile users 3 Terms and definitions For th
26、e purposes of this European Standard, the terms and definitions of EN 165 and of EN 1836:1997 apply. 4 Requirements for design and manufacture 4.1 General requirements Ski goggles shall be free from sharp edges or other defects which are likely to cause discomfort or injury during intended use. This
27、 is checked by visual inspection. 4.2 Materials No parts of the ski goggle which are in contact with the wearer shall be made of materials that are known to cause irritation, allergic or toxic reaction in a normal state of health amongst a significant proportion of users. This is checked by the insp
28、ection of the information supplied by the manufacturer. NOTERare or idiosyncratic reaction to any material may occur and may indicate the need for the individual to avoid particular types of material. Adverse skin reaction may be due to other causes, e.g. excessive contact pressure. 4.3 Sit and fit
29、Ski goggles shall sit reliably when used as intended and adapted to the contours of the face. The surfaces in contact with the face shall be made of soft flexible material. The head strap shall be designed to be flexible or adjustable and sit securely on the back of the head or the helmet. The head
30、strap assembly shall withstand any stress which occurs during proper use without tearing or being permanently deformed. This is checked by visual inspection. 1) To be published. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 174:2
31、001 4.4 Ventilation Design measures shall ensure that the inside of the ski goggles is well ventilated during skiing. This is checked by visual inspection. NOTEThe necessary rate of air exchange and the design of the ventilation openings depend heavily on the weather, style of skiing and the individ
32、ual conditions (e.g. sweating), which means that generally applicable requirements cannot be stipulated. 5 Other requirements 5.1 Optical requirements 5.1.1 Field of vision The size of the field of vision is defined in conjunction with the head-form as given in clause 17 of EN 168:2001. Ski goggles
33、shall exhibit a minimum field of vision defined by the two ellipses in Figure 1 when placed and centered at a distance of 25 mm from the surface of the eyes of the head-form. The horizontal axis shall be parallel to and 0,7 mm below the height of the line connecting the centres of the two eyes. The
34、plane of the ellipses shall be parallel to the back flat portion of the head-form. The horizontal length of the ellipses shall be of 32 mm, the vertical width of the ellipses shall be of 25 mm. The centre distance of the two ellipses shall be d = c + 20 mm, where c is the pupillary distance. The pup
35、illary distance is 64 mm, if not specified differently by the manufacturer. The test shall be carried out in accordance with 6.2. Dimensions in millimetres Figure 1 - Definition of the field of vision 5.1.2 Lens requirements The lens requirements are summarised in Tables 1 and 2. Licensed Copy: shef
36、fieldun sheffieldun, na, Fri Nov 17 08:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 6 EN 174:2001 Table 1 - Requirements for lenses used in ski goggles for downhill skiing Optical power In accordance with 4.2 of EN 1836:1997 Transmittance In accordance with Table 2 and 6.1 of EN 1836:1997 V
37、ariations in luminous transmittance In accordance with 4.1.2.1 of EN 1836:1997 Diffusion of light class 1 1,0 cd m lx / 2 in accordance with 6.3 Maximum reduced luminance coefficient Diffusion of light class 2 2,0 cd m lx / 2 in accordance with 6.3 Quality of material and surface In accordance with
38、4.4 of EN 1836:1997 a) Maximum relative change in the luminous transmittance in accordance with 6.4 ? 5 % for filters of category S0 ? 10 % for filters of category S1 ? 20 % for filters of all other categories b) Maximum reduced luminance coefficient in accordance with 6.4 Diffusion of light class 1
39、1, 0 cd m lx / 2 Resistance to ultraviolet radiation Diffusion of light class 22, 0 cd m lx / 2 Table 2 - Permissible transmittance of lenses for downhill skiing RequirementsOptional specifications Ultraviolet spectral rangeVisible spectral rangeEnhanced infrared absorption Maximum value of spectral
40、 transmittance Maximum value of solar UVA transmit- tance Range of luminous transmittance Maximum value of solar infrared transmittance ?(?) ?SUVA ?V ?SIR Filter category 280 nm to 315 nm over 315 nm to 350 nm 315 nm to 380 nm from over % to % S 080,0100 S 143,080,0 S 2 0,3. ?V0,3. ?V 18,043,0 S 38,
41、0018,0 S 4 0,03. ?V 0,15. ?V0,15.?V 3,008,00 ?V Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 7 EN 174:2001 If special transmittance properties are claimed, EN 1836:1997 applies. 5.2 Mechanical strength The ski goggle shall withstand
42、the impact of a steel ball when tested in accordance with 6.5. On so testing, the following defects shall not occur : a) ocular fracture : An ocular shall be considered to have fractured if it cracks through its entire thickness into two or more pieces, or if the ball passes through the ocular ; b)
43、ocular deformation : An ocular shall be considered to have been deformed if a mark appears on the white paper on the opposite side to that struck by the ball ; c) ocular housing or frame fracture : An ocular housing shall be considered to have failed if it separates into two or more pieces, or if it
44、 is no longer capable of holding an ocular in position, or if an unbroken ocular becomes detached from the frame, or if the ball passes through the housing or frame. 5.3 Protection against water and snow The ski goggle shall be designed so that no snow or water can penetrate the ski goggle. The resu
45、lt shall be considered to be satisfactory if no liquid enters the inside of the ski goggle during the test in accordance with clause 12 of EN 168:2001 when spraying from the front only in directions perpendicular to the flat portion at the back of the head-form. 5.4 Resistance to ignition Ski goggle
46、s shall be tested in accordance with the method specified in clause 7 of EN 168:2001 and shall be considered to be satisfactory if no part of the ski goggle ignites or continues to glow after removal of the steel rod. 5.5 Suitability for cleaning and care All parts of the ski goggle shall be capable
47、 or withstanding, without visible change, cleaning in accordance with manufacturers recommended methods. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 8 EN 174:2001 5.6 Optional specifications 5.6.1 Resistance to surface damage by fin
48、e particles If oculars are claimed to be resistant to surface damage by fine particles they shall have a reduced luminance coefficient of : ? 5 0 2 , /cd m lx in surface damage by fine particles class 1 ? 10 0 2 , /cd m lx in surface damage by fine particles class 2 following the test specified in c
49、lause 15 of EN 168:2001. 5.6.2 Resistance to fogging of oculars If oculars are claimed to be resistant to fogging they shall remain free from fogging for a minimum of 30 s when tested in accordance with clause 16 of EN 168:2001. NOTEResistance to fogging in use is a function of the antifog properties of the ocular and the design of the ski goggle. 5.6.3 Enhanced infrared absorption of oculars If oculars are claimed to have enhanced infrared absorption, they shall comply with the requirements of the last column of Table 2. 6 Testing This clause contains recommended test
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