1、BSI Standards PublicationBS EN ISO 14120:2015Safety of machinery Guards General requirements forthe design and construction offixed and movable guardsBS EN ISO 14120:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 14120:2015.It supersedes BS EN 953:1997
2、+A1:2009 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee MCE/3, Safeguarding of machinery.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprov
3、isions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 79048 5ICS 13.110Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published un
4、der the authority of theStandards Policy and Strategy Committee on 30 November 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14120 November 2015 ICS 13.110 Supersedes EN 953:1997+A1:2009English Version Safety o
5、f machinery - Guards - General requirements for the design and construction of fixed and movable guards (ISO 14120:2015) Scurit des machines - Protecteurs - Prescriptions gnrales pour la conception et la construction des protecteurs fixes et mobiles (ISO 14120:2015) Sicherheit von Maschinen - Trenne
6、nde Schutzeinrichtungen - Allgemeine Anforderungen an Gestaltung, Bau und Auswahl von feststehenden und beweglichen trennenden Schutzeinrichtungen (ISO 14120:2015) This European Standard was approved by CEN on 3 October 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations
7、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 CEN-CENELEC Management Centre or to any CEN member. This
8、 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN membe
9、rs are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portuga
10、l, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form
11、and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14120:2015 EBS EN ISO 14120:2015EN ISO 14120:2015 (E) 3 European foreword This document (EN ISO 14120:2015) has been prepared by Technical Committee ISO/TC 199 “Safety of machinery“ in collaboration with Technical Committe
12、e CEN/TC 114 “Safety of machinery” 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 May 2016, and conflicting national standards shall be withdrawn at the l
13、atest by May 2016. 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. This document supersedes EN 953:1997+A1:2009. This document has bee
14、n 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 Annex ZA, which is an integral part of this document. According to the CEN-CENELE
15、C Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Icel
16、and, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 14120:2015 has been approved by CEN as EN ISO 14120:2015 without any modificati
17、on. BS EN ISO 14120:2015EN ISO 14120:2015 (E) 4 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade As
18、sociation to provide a means of conforming to Essential Requirements of the New Approach Directive Machinery 2006/42/EC. Once this standard is cited in the Official Journal of the European Union under that Directive and has been implemented as a national standard in at least one Member State, compli
19、ance with the normative clauses of this standard confers, within the limits of the scope of this standard, a presumption of conformity with the relevant Essential Requirements of that Directive and associated EFTA regulations. WARNING Other requirements and other EU Directives may be applicable to t
20、he product(s) falling within the scope of this standard. BS EN ISO 14120:2015ISO 14120:2015(E)Foreword vIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 14 Risk assessment 85 General requirements for the design and construction of guards . 85.1 Machine aspects . 85.1.1 Gen
21、eral 85.1.2 Access to hazard zones . 85.1.3 Containment of ejected parts and other impacts 85.1.4 Containment of hazardous substances . 95.1.5 Noise . 95.1.6 Radiation . 95.1.7 Potentially explosive atmosphere . 95.2 Human aspects 95.2.1 General 95.2.2 Safety distances 95.2.3 Control of access to th
22、e hazard zone 95.2.4 Viewing . 105.2.5 Ergonomic aspects 105.2.6 Intended use .105.3 Guard design and construction aspects 115.3.1 General. 115.3.2 Crushing or trapping points 115.3.3 Durability 115.3.4 Hygiene . 115.3.5 Cleaning 115.3.6 Exclusion of contaminants . 115.3.7 Sharp edges, etc. 115.3.8
23、Integrity of joints 115.3.9 Removal of fixed guards 115.3.10 Mounting of removable fixed guards .125.3.11 Adjustable guards 125.3.12 Movable guards 125.3.13 Closed position of movable guards . 125.3.14 Interlocking guards with a start function (control guards) .125.4 Materials, rigidity, and impact
24、requirements 135.4.1 General. 135.4.2 Impact and ejection resistance . 135.4.3 Rigidity 135.4.4 Secure fixing135.4.5 Reliability of moving parts . 135.5 Containment . 135.6 Resistance to corrosion 135.7 Resistance to microorganisms 135.8 Non-toxicity 145.9 Machine viewing . 145.10 Transparency . 145
25、.11 Shadows and stroboscopic effects 145.12 Electrostatic properties 145.13 Guards with electrically conductive parts 14 ISO 2015 All rights reserved iiiContents PageBS EN ISO 14120:2015ISO 14120:2015(E)5.14 Thermal stability 145.15 Fire and flammability . 145.16 Noise and vibration reduction 155.17
26、 Radiation protection . 155.18 Climbing . 155.19 Retained fastenings 155.20 Vibration resistance . 155.21 Warning signs . 155.22 Colour . 165.23 Appearance . 166 Selection of types of guards .166.1 General 166.2 Combination of different guards or of guards with other devices 166.3 Selection of guard
27、s according to the number and size of the hazards .176.4 Selection of guards according to the nature and frequency of access required 186.4.1 General. 186.4.2 Moving transmission parts 186.4.3 Where access is not required during use .186.4.4 Where access is required during use 187 Verification of th
28、e safety requirements for guards .197.1 General 197.2 Verification and validation methods . 197.3 Required verification and validation 198 Information for use .238.1 General 238.2 Guard hazards . 238.3 Installation . 238.4 Operation 238.5 Removal of guards . 238.6 Inspection and maintenance 24Annex
29、A (informative) Example of retained fastening 25Annex B (informative) Example of projectile test method for mechanically testing guards 26Annex C (informative) Example of pendulum test method for mechanically testing guards .30Annex D (informative) Relationship between International Standards refere
30、nced in Clause 2 and corresponding European Standards .34Bibliography .35iv ISO 2015 All rights reservedBS EN ISO 14120:2015ISO 14120:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of prepar
31、ing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in li
32、aison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Di
33、rectives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that
34、 some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent dec
35、larations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information
36、 about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 199, Safety of machinery.This second edition cancels and replaces the first edition (ISO 14120:2002),
37、which has been technically revised. The main changes from the previous edition are as follows. Definitions have been brought into line with ISO 12100. The figures showing examples of guards have been updated where appropriate. Clause 5 has been updated with new references to ISO 13855 and ISO 14119.
38、 Requirements on the removal of guards have been amended. Subclause 5.3.9 describes requirements for the removal of fixed guards only with a tool. In addition, there is a requirement that fixed guards be designed to prevent easy removal. The subclause about impact and ejection resistance (5.4) has b
39、een strengthened. Subclauses on Climbing (5.18), Retained fastenings (5.19), Warning signs (5.21), Colour (5.22) and Appearance (5.23) have been added. Clause 6 has been amended and updated to better include cover combinations of different guards or of guards with other devices. Selection of guards
40、according to the number and size of the hazards (6.3) has been changed and updated. Subclause 6.4.4.2, where access is required during the working cycle, has been changed and updated. Clauses on verification and validation have been introduced (Clause 7). This includes a table which outlines the saf
41、ety requirements and/or measures by subclause. The text of Clause 8 has been updated, including requirements for procedures for removal of guards (use of a tool and the safe working procedure). The subclause for removal of guards (8.5) has changed. Two new informative annexes on test methods, one on
42、 projectile tests and the other on impact tests, have been added. The Bibliography, which contains a list of International and European Standards published or in preparation that can be helpful in the design and commissioning of guards, has been updated. ISO 2015 All rights reserved vBS EN ISO 14120
43、:2015ISO 14120:2015(E)IntroductionThe structure of safety standards in the field of machinery is as follows:a) type-A standards (basic safety standards) giving basic concepts, principles for design, and general aspects that can be applied to all machinery;b) type-B standards (generic safety standard
44、s) dealing with one safety aspect or one or more type(s) of safeguard that can be used across a wide range of machinery: type-B1 standards on particular safety aspects (e.g. safety distances, surface temperature, noise); type-B2 standards on safeguards (e.g. two-hand controls, interlocking devices,
45、pressure-sensitive devices, guards);c) type-C standards (machine safety standards) dealing with detailed safety requirements for a particular machine or group of machines.This International Standard is a type-B2 standard as stated in ISO 12100.Guards provide a risk reduction for both protection agai
46、nst unintended access and against ejected parts and substances. The guarding can also give protection against others hazards, e.g. noise, fire, biological hazards, and radiation.The requirements of this document can be supplemented or modified by a type-C standard.For machines that are covered by th
47、e scope of a type-C standard and that have been designed and built according to the requirements of that standard, the requirements of that type-C standard take precedence.vi ISO 2015 All rights reservedBS EN ISO 14120:2015Safety of machinery Guards General requirements for the design and constructi
48、on of fixed and movable guards1 ScopeThis International Standard specifies general requirements for the design, construction, and selection of guards provided to protect persons from mechanical hazards.This International Standard indicates other hazards that can influence the design and construction
49、 of guards.This International Standard applies to guards for machinery which will be manufactured after it is published.The requirements are applicable if fixed and movable guards are used. This International Standard does not cover interlocking devices. These are covered in ISO 14119.This International Standard does not provide requirements for special systems relating specifically to mobility such as ROPS (rollover protective structures), FOPS (falling-object protective structures), and TOPS (tip over protective structures) or to the ability o
