1、December 2010 Translation by DIN-Sprachendienst.English price group 11No part of this translation 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).I
2、CS 23.120!$lI0“1733813www.din.deDDIN EN ISO 12499Industrial fans Mechanical safety of fans Guarding (ISO 12499:1999)English translation of DIN EN ISO 12499:2010-12Industrieventilatoren Mechanische Sicherheit von Ventilatoren Berhrungsschutz (ISO 12499:1999)Englische bersetzung von DIN EN ISO 12499:2
3、010-12Ventilateurs industriels Scurit mcanique des ventilateurs Protecteurs (ISO 12499:1999)Traduction anglaise de DIN EN ISO 12499:2010-12See start of applicationwww.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1911.10 DIN EN ISO 1
4、2499:2010-12 2 A comma is used as the decimal marker. Start of application The start of application of this standard is 1 December 2010. National foreword This standard includes safety requirements. This standard has been prepared by Technical Committee ISO/TC 117 “Industrial fans” (Secretariat: BSI
5、, United Kingdom) in collaboration with Technical Committee CEN/TC 156 “Ventilation for buildings” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Maschinenbau (Mechanical Engineering Standards Committee), Working Committee NA 060-0
6、9-11 AA Ventilatoren of Section Allgemeine Lufttechnik. Representatives of stakeholders, manufacturers and users of fans, and of research and testing institutes contributed to this standard. The DIN Standards corresponding to the International Standards referred to in this document are as follows: I
7、SO 13349:1999 DIN EN ISO 13349:2010 ISO 13852 (withdrawn and replaced by ISO 13857) DIN EN ISO 13857 ISO 3864:1984 has been revised, restructured and subdivided into several parts. The following DIN ISO Standards have been published: DIN ISO 3864-2, Graphical symbols Safety colours and safety signs
8、Part 2: Design principles for product safety labels DIN ISO 3864-3, Graphical symbols Safety colours and safety signs Part 3: Design principles for graphical symbols for use in safety signs National Annex NA (informative) Bibliography DIN EN ISO 13349:2010-12, Industrial fans Vocabulary and definiti
9、ons of categories EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12499 October 2008 ICS 23.120 English Version Industrial fans Mechanical safety of fans Guarding (ISO 12499:1999) Ventilateurs industriels Scurit mcanique des ventilateurs Protecteurs (ISO 12499:1999) Industrieventilatoren Me
10、chanische Sicherheit von Ventilatoren Berhrungsschutz (ISO 12499:1999) This European Standard was approved by CEN on 2 October 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 national sta
11、ndard 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 version in any othe
12、r 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, Denmark, Estonia,
13、 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 NORMALISATION EUROPISC
14、HES 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 ISO 12499:2008: EContents EN ISO 12499:2008 (E) DIN EN ISO 12499:2010-12 2 Page Foreword .3 Introduc
15、tion.4 1 Scope5 2 Normative references .5 3 Definitions .5 4 Hazards from fans .8 5 Risk assessment .9 6 Reduction of risk .10 7 Types of safeguard10 8 Guard construction 13 9 Design of fixed guards and fixed distance guards 14 10 Noise.15 11 Fans enclosed within units.15 12 Safe working practices .
16、15 13 Information for use16 Annex A (informative) Bibliography .17 Foreword The text of ISO 12499:1999 has been prepared by Technical Committee ISO/TC 117 “Industrial fans” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 12499:2008 by Technical Committee
17、 CEN/TC 156 “Ventilation for buildings” the secretariat of which is held by BSI. 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 April 2009, and conflicting national standards shall be withdrawn a
18、t the latest by April 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the nat
19、ional 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, Lithuania, Luxembourg, Malta, Netherlands, Norway,
20、 Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 12499:1999 has been approved by CEN as a EN ISO 12499:2008 without any modification. EN ISO 12499:2008 (E) DIN EN ISO 12499:2010-12 3 IntroductionThis International S
21、tandard is intended to provide designers, users and installers with information on the safetyaspects of fixed guards for use with industrial fans.Since fans, by the nature of the function they perform, contain rotating parts, they present a mechanical hazardwhich has to be minimized or avoided. As a
22、 fan does not usually have to be accessible during “normal operation“, afixed guard can be applied. This can be removed during “ancillary operations“ as necessary for servicing ormaintenance.As the scope of this International Standard covers a particular form of guarding as well as its design and us
23、e for aspecific range of products, it is a type C standard, as defined by the European Committee for Standardization.It complies with ISO/TR 12100-1, ISO/TR 12100-2 and EN 414, as well as ISO 13852.EN ISO 12499:2008 (E) DIN EN ISO 12499:2010-12 4 1 ScopeThis International Standard specifies requirem
24、ents for the mechanical guarding of industrial fans.The circumstances under which safety measures shall be taken are described and information on how hazards canbe reduced or eliminated is given, along with guidance on safety practices and information for use.2 Normative referencesThe following stan
25、dards contain provisions which, through reference in this text, constitute provisions of thisInternational Standard. At the time of publication, the editions indicated were valid. All standards are subject torevision, and parties to agreements based on this International Standard are encouraged to i
26、nvestigate thepossibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintainregisters of currently valid International Standards.ISO 3864:19841), Safety colours and safety signs.ISO 13349: 2), Industrial fans Vocabulary and definitions of categorie
27、s.ISO 13852:1996, Safety of machinery Safety distances to prevent danger zones being reached by the upperlimbs.ISO 14120: 2), Safety of machinery General requirements for the design and construction of guards (fixed,movable).3 DefinitionsFor the purposes of this International Standard, the definitio
28、ns given in ISO 13349 and the following definitionsapply.3.1industrial fanany fan used for industrial purposes, including the ventilation of buildings and mines but excluding ceiling, pedestaland similar circulation type fans such as those commonly used for non- industrial purposes3.2normal operatio
29、noperation when the fan impeller is rotating and the fan is fulfilling its designed function of moving air3.3ancillary operationoperation when the fan impeller is stationary and all power to the fan has been disconnected to allow such activitiesas maintenance, cleaning, adjustment or troubleshooting
30、 to take place1)To be revised, in parts.2)To be published.EN ISO 12499:2008 (E) DIN EN ISO 12499:2010-12 5 3.4windmillingrotation of a fan impeller induced by flow across the impeller3.5hazardsource of possible injury or damage to health3.6hazardous situationany situation in which a person is expose
31、d to a hazard or to hazards3.7personal injuryhurt caused to or sustained by a person as a result of mechanical hazard3.8riskcombination of the probability and the degree of the possible injury or damage to health in a hazardous situation3.9danger zonedanger pointany zone or point at or near the fan
32、where a person is exposed to risk of injury or damage to health3.10guardguardingmechanical means whereby mechanical hazards associated with industrial fans are minimized or avoided3.10.1fixed guardguard kept in place by means of fasteners, making removal impossible without using tools3.10.2fixed dis
33、tance guardfixed guard which does not completely enclose a danger zone, but which prevents or reduces access by virtue of itsphysical dimensions and its distance from the hazard3.11safeguardingsafety measures consisting of the use of specific technical means called safeguards (guards, safety devices
34、) toprotect persons from hazards which cannot reasonably be removed or sufficiently limited by design3.12residual riskrisk remaining after specified safety measures have been taken during design or by the application of safeguarding3.13safe working practicesystem of working which reduces or eliminat
35、es the risk of injury3.14information for usesafety measures consisting of communication links, such as text, words, signs, signals, symbols or diagrams, usedseparately or in combination, to convey information to the userNOTE Information for use is directed to professional and/or nonprofessional user
36、s.EN ISO 12499:2008 (E) DIN EN ISO 12499:2010-12 6 3.15captive key interlock with timercombination of a switch, with timer, and a lock secured to a fixed part of the machine with the operating key heldcaptive in the access doorNOTE The sequence of operation is as follows:turn handle to switch off,af
37、ter time delay, further turn to unlock access door, andopen door (key disengages from lock).A typical example is illustrated in figure 1.KeyLock with switchSwitchLockHandle containing keyNOTE The captive key interlock ensures that the circuit-breaking element will be opened before the guard can be o
38、pened.It can be used when the guard can be removed completely. It is less suitable for sliding guards than for hinged and completelyremovable ones; it can be combined with a time-delay unit.Figure 1 Principle of captive key interlockEN ISO 12499:2008 (E) DIN EN ISO 12499:2010-12 7 4 Hazards from fan
39、sA person may be injured by a fan as a result of:a) being trapped between a moving and stationary part, e.g. a fan impeller and casing or other fixed part of a fan;b) being trapped between two moving parts, e.g. a belt and pulley;c) being drawn into the fan inlet by air movement, resulting in contac
40、t with a rotating shaft or impeller;d) coming into contact with a moving part, such as an impeller;e) object being drawn into the fan inlet and ejected at high velocity at fan discharge or inlet;f) structural failure of fan components;g) contact with surfaces of the fan at extreme temperatures (i.e.
41、 less than 220 C or greater than + 50 C);h) noise emission caused by safeguards;i) even when a fan is switched off, the rotating parts can still be caused to windmill by air driven through the fan,either naturally or by fan(s) in other parts of the duct system connected to the fan; this could cause
42、injury as theresult of contact with a moving part, such as an impeller;j) unauthorized opening of access doors provided in the fan or connecting ductwork, if done whilst the fan isoperating, can cause injury as the result of being drawn into the fan inlet by air movement, resulting in contactwith a
43、rotating shaft or impeller, or contact with a moving part, such as an impeller.NOTE Figure 2 illustrates typical mechanical hazards referred to in a) to d).EN ISO 12499:2008 (E) DIN EN ISO 12499:2010-12 8 Figure 2 Typical mechanical hazards from fans5 Risk assessmentA qualitative assessment of the r
44、isk of injury from fans indicates that if no safeguarding measures are undertaken,this risk can be considerable and unacceptable.Depending upon the power of the fan and the hazard involved, injury can be severe or even fatal.Hazards in clause 4 a) to f) are judged to be those having the greatest pot
45、ential for injury.The conclusion is that safeguarding measures shall be undertaken to minimize the risk.Where there is a residual risk, “safe working practices“ shall be followed and the safety aspects of “information foruse“ shall receive particular attention.EN ISO 12499:2008 (E) DIN EN ISO 12499:
46、2010-12 9 6 Reduction of riskThe basic principles for reducing the risk of injury, which may be applied to fans, are :a) identification or knowledge of the hazard(s); (where the hazard is not visible or evident, such as at accessdoors, a suitable warning label in accordance with ISO 3864 shall be fi
47、xed to the door in a clearly visibleposition),b) elimination or avoidance of the hazard(s), including measures to reduce the scale of possible injury,c) use of physical safeguards,d) use of “safe working practices“,e) emphasis on the safety aspects of “information for use“.One other method of elimin
48、ating or reducing risks caused by fans is to make use of safety distances preventingdanger zones from being reached by the upper limbs, as detailed in ISO 13852.It is not always possible for the fan manufacturer to be certain that a fan is safe by virtue of its position. Whereaccess and consequent i
49、njury is reasonably foreseeable, safeguards shall be provided by the installer or fan user.This means that protective guards shall be fitted in accordance with the requirements of 7.1.The necessity of access to the fan for the purposes of inspection or cleaning make it impossible to excluderemovable guards or inspection covers. These therefore shall be removed only by qualified persons as defined in7.3.3.Certain safety measures are more reliable than others. The order of priority is determined by reliability and thereforesafeg
