1、January 2009DEUTSCHE NORM English price group 11No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.110!$U$?“1500128www
2、.din.deDDIN EN 842Safety of machinery Visual danger signals A1:2008)English version of DIN EN 842:2009-01Sicherheit von Maschinen Optische Gefahrensignale Allgemeine Anforderungen, Gestaltung und Prfung (enthlt nderung A1:2008)Englische Fassung DIN EN 842:2009-01SupersedesDIN EN 842:1996-08www.beuth
3、.deDocument comprises 15 pagesGeneral requirements, design and testing (includes AmendmentDIN EN 842:2009-01 2 Start of validity This standard takes effect on 1 January 2009. DIN EN 842:1996-08 may be used in parallel until 28 December 2009. National foreword This standard includes safety requiremen
4、ts within the meaning of the Gerte- und Produktsicherheitsgesetz (GPSG) (German Equipment and Consumer Goods Safety Law) and in connection with European legislation (EC Machinery Directive), which has been implemented by national legislation. This standard has been prepared by Technical Committee CE
5、N/TC 122 “Ergonomics” (Secretariat: DIN, Germany) in connection with the amended EC Machinery Directive. The responsible German bodies involved in its preparation were the Normenausschuss Ergonomie (Ergonomics Standards Committee) and the Normenausschuss Maschinenbau (Mechanical Engineering Standard
6、s Committee), Joint Technical Committee NA 023-00-05 GA Ergonomie der physikalischen Umgebung. This standard concretizes the basic requirements set out in Annex I of the EC Machinery Directive 98/37/EC (valid until 28 December 2009) and the new EC Machinery Directive 2006/42/EC which becomes applica
7、ble on 29 December 2009 relating to machinery to be placed on the EEA market, with the intent of simplifying the means of proving conformity with such requirements. Once this standard is designated a harmonized standard in the Official Journal of the European Union, a manufacturer applying this stan
8、dard may assume compliance with the requirements of the Machinery Directive (the so-called “presumption of conformity”). Amendments This standard differs from DIN EN 842:1996-08 as follows: a) Annex ZA has been revised. b) Annex ZB (informative) “Relationship between this European Standard and the E
9、ssential Requirements of EU Directive 2006/42/EC”. Previous editions DIN 33404-2: 1979-10 DIN EN 842: 1996-08 National Annex NA (informative) Bibliography DIN 4844-3, Safety marking Part 3: Escape- and rescue plan EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 842:1996+A1 September 2008 ICS 13
10、.110 Supersedes EN 842:1996 English Version Safety of machinery - Visual danger signals - General requirements, design and testing Scurit des machines - Signaux visuels de danger - Exigences gnrales, conception et essais Sicherheit von Maschinen - Optische Gefahrensignale - Allgemeine Anforderungen,
11、 Gestaltung und Prfung This European Standard was approved by CEN on 30 November 1995 and includes Amendment 1 approved by CEN on 14 August 2008. 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
12、 national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A versio
13、n in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denm
14、ark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISA
15、TION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 842:1996+A1:2008: EEN 842:1996+A1:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normat
16、ive references 4 3 Definitions 4 4 Safety and ergonomic requirements .5 4.1 General5 4.2 Detectibility.5 4.3 Discriminability 9 4.4 Glare9 4.5 Distance 9 4.6 Duration 10 5 Physical measurements10 6 Subjective visual check 10 Annex A (informative) Bibliography 11 Annex ZA (informative) !Relationship
17、between this European Standard and the Essential Requirements of EU Directive 98/37/EC, amended by 98/79/EC“.12 Annex ZB (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC“.13 DIN EN 842:2009-01 EN 842:1996+A1:2008 (E) 3 Foreword This
18、 document (EN 842:1996+A1:2008) has been prepared by Technical Committee CEN/TC 122 “Ergonomics”, the secretariat of which 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 200
19、9, and conflicting national standards shall be withdrawn at the latest by December 2009. This document includes Amendment 1, approved by CEN on 2008-08-14. This document supersedes EN 842:1996. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. This
20、 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 EU Directive(s). !For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this do
21、cument.“ On the international level the International Standard ISO 11428 “Ergonomics Visual danger signals General requirements, design and testing“ has been prepared by WG 3 “Danger signs and speech communication in noisy environments“ of ISO/TC 159/SC 5 “Ergonomics of the physical environment“. Th
22、e technical content of both the European Standard EN 842 and the International Standard ISO 11428 is identical, however the limits of applicability of the standards to other technical fields are different. Due to the different limits of applicability still existing on the European and international
23、level direct transformation of the International Standard into a European Standard is not possible. The reason is that EN 842 has been prepared in order to fulfil the essential safety and health requirements of annex 1 of the Council Directive 89/392/EEC of 14 June 1989 on the approximation of the l
24、aws of the Member States relating to machinery: Essential health and safety requirements relating to the design and construction of machinery (see annex A of EN 292-2:1991/A1:1995) and that therefore the limits of applicability of the European Standard is restricted to this Directive. According to t
25、he CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithua
26、nia, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. DIN EN 842:2009-01 EN 842:1996+A1:2008 (E) 4 1 Scope This European Standard describes criteria for the perception of visual danger signals in the area that peopl
27、e are intended to perceive and to react to such a signal. It specifies the safety and ergonomic requirements and the corresponding physical measurements and subjective visual check. It also provides guidance for the design of the signals to be clearly perceived and differentiated as described in 5.3
28、 of EN 292-2:1991. This European Standard does not apply to danger indicators: Presented in either written or pictorial form; Transmitted by data display units. This European Standard does not apply to special regulations such as those for public disaster and public transport. 2 Normative references
29、 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 or revisions of any of these pu
30、blications 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. EN 292-2:1991/A1:1995, Safety of machinery - Basic concepts, general principles for design - Part 2: Technical principle
31、s and specifications. EN 60073, Coding of indicating devices and actuators by colours and supplementary means (IEC 73:1991). EN 61310-1, Safety of machinery Indicating, marking and actuating Part 1: Requirements for visual, auditory and tactile signals (IEC 1310-1:1995). ISO 3864, Safety colours and
32、 safety signs. 3 Definitions For the purposes of this standard the following definitions apply: 3.1 visual danger signal visual signal indicating imminent onset, or actual occurrence of a dangerous situation, involving risk of personal injury or equipment disaster, and requiring some human response
33、to eliminate or control the danger or requiring other immediate action. A distinction is made between two types of visual danger signals: visual warning signal and visual emergency signal. 3.1.1 visual warning signal visual signal indicating the imminent onset of a dangerous situation requiring appr
34、opriate measures for the elimination or control of the danger DIN EN 842:2009-01 EN 842:1996+A1:2008 (E) 5 3.1.2 visual emergency signal visual signal indicating the beginning or the actual occurrence of a dangerous situation requiring immediate action 3.2 signal reception area area in which the sig
35、nal is intended to be perceived and reacted upon 3.3 field of vision (visual field) physical space visible to an eye in a given position (see also 3.1.10 of ISO 8995:1989) 3.4 danger signal light light source intended to convey information about the existence of a dangerous situation by means of one
36、 or several characteristics, such as luminance1)colour, shape, location and temporal pattern 4 Safety and ergonomic requirements 4.1 General The characteristics of the visual danger signal shall ensure that any person in the signal reception area can detect, discriminate and react to the signal as i
37、ntended. Visual danger signals shall be: Clearly seen under all possible lighting conditions; Clearly discriminated from general lighting and other visual signals; Allocated a specific meaning within the signal reception area. Visual danger signals shall take precedence over all other visual signals
38、. Visual emergency signals shall take precedence over all visual warning signals. Care shall be taken to review the effectiveness of the visual danger signals at regular intervals and whenever a new signal (whether a danger signal or not) is introduced in the signal reception area. NOTE 1 A visual d
39、anger signal should, if not contradicted by special reasons, be associated with an auditory danger signal. When the danger signal is an emergency signal, auditory and visual signals should be presented together (see EN 981). NOTE 2 It could be advantageous for visual danger signals to have a relativ
40、ely low intensity test mode to indicate they are functional but not in a warning mode. 4.2 Detectibility 4.2.1 Luminance1), illuminance1)and contrast1)1) As defined in ISO 8995 DIN EN 842:2009-01 EN 842:1996+A1:2008 (E) 6 4.2.1.1 General Two types of light sources need to be distinguished: luminous
41、area sources and luminous point sources2). Luminous area sources have a visual angle greater than 1 (minute) for daylight conditions or 10 (minutes) for darkness, otherwise the light sources are luminous point sources. 4.2.1.2 Luminous area sources In all cases when the light source is not to be reg
42、arded as small (point source), the criteria for detectibility characters are the luminance of the surface, the luminance of the background and their ratio. This luminance ratio (contrast) is not affected by viewing distance (unless transmittivity is to be taken into account, see 4.5) so a specified
43、luminance ratio can be considered adequate for a wide range of viewing conditions. The luminance of a visual warning signal shall be at least five times the luminance of the background. The luminance of a visual emergency signal shall be at least twice that of a warning signal, i.e. at least ten tim
44、es the luminance of the background. 4.2.1.3 Luminous point sources For luminous point sources, the criterion for detectibility is the illuminance produced by the luminous flux on the pupil of the observers eye compared to the luminance of the background. The relationship between the pupillary illumi
45、nance required for detectibility and the background luminance is given in figure 1. 2) As defined in IEC 50(845) DIN EN 842:2009-01 EN 842:1996+A1:2008 (E) 7 a) Required pupillary illuminance in Lux b) Background illuminance in cd/m2Figure 1 Relationship between the required pupillary illuminance an
46、d the background luminance 4.2.2 Flashing lights Flashing lights shall be used for visual emergency signals. By having a signal flash, i.e. continuously switching ON and OFF, the detectibility (attention-attracting qualities) of the signal is usually increased, often accompanied by transmission of a
47、 feeling of urgency. NOTE 1 It is recommended that the flash frequency should be between 2 Hz and 3 Hz with approximately equal ON- and OFF- intervals. NOTE 2 Synchronism between light and sound is not generally required, but can improve perception. NOTE 3 Stroboscopic effects from, e.g., rotating m
48、achinery, can reduce the detectibility of flashing light signals. 4.2.3 Location within the field of vision Visual danger signals should be located where appropriate in the direct vicinity of the potential danger in order to allow its immediate detection by all persons within the signal reception ar
49、ea, or about to enter in this area. Additional visual danger signals located outside the direct vicinity, such as in a control room or a control panel, are not excluded. DIN EN 842:2009-01 EN 842:1996+A1:2008 (E) 8 The signal reception area of a visual danger signal shall be explicitly stated in the design for every installation, indicating whether the signal reception area is, e.g., just a single operators console or parts of a factory or a whole plant. For directly displayed danger signals, the signal lights shall be located within the field
