1、BRITISH STANDARDBS EN +A1:2008Safety of machinery Prevention of unexpected start-upICS 13.110g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g581037:19
2、95 National forewordThis British Standard is the UK implementation of EN 1037:1995+A1:2008. It The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN
3、 amendment A1 is indicated by !“.The UK participation in its preparation was entrusted to Technical Committee MCE/3, Safeguarding of machinery.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necess
4、ary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 1037:1995+A1:2008supersedes BS EN 1037:1995 which is withdrawn.This British Standard was published under the authority of the Standar
5、ds Board and comes into effect on 15th July 1996 BSI 2008ISBN 978 0 580 60506 2Amendments/corrigenda issued since publicationDate Comments30 November 2008 Implementation of CEN amendment A1:2008 and alignment of BSI and CEN publication datesEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1037:1
6、995+A1 April 2008 ICS 13.110 Supersedes EN 1037:1995 English Version Safety of machinery - Prevention of unexpected start-up Scurit des machines - Prvention de la mise en marche intempestive Sicherheit von Maschinen - Vermeidung von unerwartetem Anlauf This European Standard was approved by CEN on 1
7、4 July 1995 and includes Amendment 1 approved by CEN on 18 March 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 standard without any alteration. Up-to-date lists and bibliograph
8、ical 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 other language made by translation under the responsibility of a C
9、EN 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, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
10、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 EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36
11、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 1037:1995+A1:2008: EEN 1037:1995+A1:2008 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 4 2 Normative references 4 3 Definitions 5 4 General6 4.1 Isolation
12、 and energy dissipation6 4.2 Other means to prevent unexpected unintended start-up6 5 Devices for isolation and energy dissipation .6 5.1 Devices for isolation from power supplies .6 5.2 Locking securing devices 7 5.3 Devices for stored energy dissipation or restraint containment .7 5.4 Verification
13、 .8 6 Measures other than isolation and energy dissipation intended to prevent unexpected start-up9 6.1 Design strategy9 6.2 Measures intended to prevent accidental generation of start commands 9 6.3 Measures intended to prevent accidental start commands resulting in an unexpected start-up10 6.4 Aut
14、omatic monitoring of the category 2 stopped condition .13 Annex A (informative) Examples of tasks which can require the presence of persons in danger zones.14 Annex B (informative) Signalling, warning .15 Annex ZA (informative) !Relationship between this European Standard and the Essential Requireme
15、nts of EU Directive 98/37/EC 16 Annex ZB (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC 17 Bibliography 18 BS EN 1037:1995+A1:2008EN 1037:1995+A1:2008 (E) 3 Foreword This document (EN 1037:1995+A1:2008) has been prepared by Techni
16、cal Committee 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 October 2008, and conflicting national standards shall be w
17、ithdrawn at the latest by October 2008. This document supersedes EN 1037:1995. This document includes Amendment 1, approved by CEN on 2008-03-18. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. This document has been prepared under a mandate given
18、 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 document.“ The drafting was carried out by a working group o
19、f CEN/TC 114 (WG 9) with participation of experts from CENELEC/TC 44 X. This standard is a type B1 standard in accordance with EN 414. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Aus
20、tria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 10
21、37:1995+A1:2008EN 1037:1995+A1:2008 (E) 4 Introduction Keeping a machine in a stopped condition while persons are present in danger zones is one of the most important conditions of the safe use of machinery and hence one of the major aims of the machine designer and machine user. In the past, the co
22、ncepts of “operating machine“ and “stopped machine“ were generally unambiguous; a machine was: Operating when its movable elements, or some of them, were moving; Stopped when its movable elements were at rest. Machine automation has made the relationship between “operating“ and “moving“ on the one h
23、and, “stopped“ and “at rest“ on the other hand, more difficult to define. Automation has also increased the potential for unexpected start-up, and there are a significant number of accidents where machines, stopped for diagnostic work or corrective actions, started up unexpectedly. Hazards other tha
24、n mechanical hazards generated by movable elements (e.g. from a laser beam) also need to be taken into account. The risk assessment relating to the presence of persons in a danger zone of a stopped machine needs to take into account the probability of an unexpected start-up of the hazard-generating
25、machine elements. This standard provides machine designers and technical committees in charge of preparing machinery safety standards with a survey of built-in measures intended to prevent unexpected start-up. 1 Scope This standard specifies built-in safety measures aimed at preventing unexpected ma
26、chine start-up (see 3.2) to allow safe human interventions in danger zones (see Annex A). This standard applies to unexpected start-up from all types of energy source, i.e.: Power supply, e.g. electrical, hydraulic, pneumatic; Stored energy due to, e.g., gravity, compressed springs; External influen
27、ces, e.g. from wind; 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 a
28、mendments to 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. EN 292-1:1991, Safety of machinery Basic concepts, general principles for de
29、sign Part 1: Basic terminology, methodology. BS EN 1037:1995+A1:2008EN 1037:1995+A1:2008 (E) 5 EN 292-2:1991, Safety of machinery Basic concepts, general principles for design Part 2: Technical principles and specifications. prEN 10501), Safety of machinery Principles for risk assessment. ENV 1070,
30、Safety of machinery Terminology. EN 60204-1:1992, Safety of machinery Electrical equipment of machines Part 1: General requirements. 3 Definitions For the purposes of this standard, the definitions given in ENV 1070 “Safety of machinery Terminology“ apply, together with the following: 3.1 start-up (
31、machine start-up) change from rest to motion of a machine or of one of its parts NOTE The definition includes functions other than motion, e.g. switch-on of a laser beam 3.2 unexpected unintended start-up any start-up caused by: a start command which is the result of a failure in, or an external inf
32、luence on, the control system; a start command generated by inopportune action on a start control or other parts of the machine, as e.g. a sensor or a power control element; restoration of the power supply after an interruption; external/internal influences (gravity, wind, self-ignition in internal
33、combustion engines) on parts of the machine; NOTE Automatic machine start-up during normal operation is not unintended, but can be considered to be unexpected from the point of view of the operator. Prevention of accidents in this case involves the use of safeguarding measures (see clause 4 of EN 29
34、2-2:1991) 3.3 isolation and energy dissipation a procedure which consists of all the four following actions: a) isolating disconnecting, separating the machine (or defined parts of the machine) from all power supplies; b) if necessary (for instance in large machines or in installations), locking (or
35、 otherwise securing) all the isolating units in the isolating position; c) dissipating or restraining containing any stored energy which may give rise to a hazard. NOTE Energy may be stored in e.g.: Mechanical parts continuing to move through inertia; 1) Draft standard prepared by CEN/TC 114/WG 14 B
36、S EN 1037:1995+A1:2008EN 1037:1995+A1:2008 (E) 6 Mechanical parts liable to move by gravity; Capacitators, accumulators; Pressurized fluids; Springs. d) Verifying by means of a safe working procedure that the actions taken according to a), b) and c) above have produced the desired effect. 4 General
37、4.1 Isolation and energy dissipation Machines shall be provided with devices intended for isolation and energy dissipation (see clause 5), especially with a view to major maintenance, work on power circuits and decommissioning (see the essential safety requirement expressed in 1.6.3 of annex A of EN
38、 292-2:1991). 4.2 Other means to prevent unexpected unintended start-up If the use of isolation and energy dissipation is not appropriate (e.g. for frequent short interventions in danger zones), the designer shall provide, according to the risk assessment (see prEN 1050), other measures (see clause
39、6) to prevent unexpected start-up. Additional means such as signalling and/or warning may be appropriate (see annex B). NOTE 1 Examples of tasks which can require the presence of persons in danger zones are given in annex A NOTE 2 According to 5.7.1 of EN 292-1:1991, the designer should as completel
40、y as possible determine the different machine operating modes and the need for the presence of persons in danger zones. Appropriate built-in safety measures can then be provided to prevent operators from being induced to use hazardous operating modes and hazardous intervention techniques caused by t
41、echnical difficulties in the use of the machine (see also 3.12 “Intended use of a machine“ of EN 292-1:1991). 5 Devices for isolation and energy dissipation 5.1 Devices for isolation from power supplies 5.1.1 Isolation devices shall: Ensure a reliable isolation (disconnection, separation); Have a re
42、liable mechanical link between the manual control and the isolating element(s); Be equipped with clear and unambiguous identification of the state of the isolation device which corresponds to each position of its manual control (actuator). NOTE 1 For electrical equipment, a supply disconnecting devi
43、ce complying with 5.3 “Supply disconnecting (isolating) device“ of EN 60204-1:1992 meets this requirement. NOTE 2 Plug and socket systems (for electrical supplies), or their pneumatic, hydraulic or mechanical equivalents, are examples of isolating devices with which it is possible to achieve a visib
44、le and reliable discontinuity in the power supply circuits. For electrical plug/socket combinations, see 5.3.2 d) of EN 60204-1:1992. NOTE 3 For hydraulic and pneumatic equipment, see also 5.1.6 of prEN 982 and 5.1.6 of prEN 983. BS EN 1037:1995+A1:2008EN 1037:1995+A1:2008 (E) 7 5.1.2 The location a
45、nd number of isolation devices are determined by the configuration of the machine, the need for the presence of persons in danger zones and the risk assessment. Each isolation device shall make it possible (e.g. by durable marking where necessary) to readily identify which machine or machine part it
46、 isolates. NOTE For electrical equipment of machinery, see also 5.4 “Devices for switching off for prevention of unexpected start-up“ of EN 60204-1:1992. 5.1.3 When, during isolation of the machine, certain circuits have to remain connected to their power supply in order, e.g. to hold parts, save in
47、formation or provide local lighting, special means shall be provided to ensure operator safety. NOTE Such means include enclosures which can be opened only with a key or a special tool, warning labels and/or warning lights 5.2 Locking securing devices The isolating devices shall be capable of being
48、locked or otherwise secured in the isolating position. NOTE 1 Locking devices may not be necessary when a plug/socket combination is used and the plug can be kept under immediate supervision of the person present in the danger zone NOTE 2 Locking devices include: Facilities to apply one or more padl
49、ocks; Trapped-key interlocking devices (see annex E of prEN 1088), one of the locks of which is used to lock secure the isolating device; Lockable covers or enclosures. Locking devices are not required when reconnection cannot endanger persons. 5.3 Devices for stored energy dissipation or restraint containment 5.3.1 General 5.3.1.1 Devices for stored energy dissipation or restraint containment shall be incorporated into the machine where stored energy can give rise to a hazard. NOTE Such devices
