SIST EN 12626:1998
(Main)Safety of machinery - Laser processing machines - Safety requirements (ISO 11553:1996 modified)
Safety of machinery - Laser processing machines - Safety requirements (ISO 11553:1996 modified)
This International Standard describes hazards generated by laser processing machines, as defined in 3.2, and specifies the safety requirements relating to radiation hazards and hazards generated by materials and substances. It also specifies the information to be supplied by manufacturers of such equipment. It is not applicable to laser products, or equipment containing such products, which are manufactured solely and expressly for the following applications: - photolithography; - stereolithography; - holography; - medical applications (per IEC 601-2-22); - data storage.
Sicherheit von Maschinen - Laserbearbeitungsmaschinen - Sicherheitsanforderungen (ISO 11553:1996 modifiziert)
Diese internationale Norm beschreibt Gefährdungen, die durch Laserbearbeitungs-maschinen nach Abschnitt 3.2 hervorgerufen werden, und legt die Sicherheits- anforderungen hinsichtlich Strahlungsgefährdungen und durch Werkstoffe und Substanzen erzeugte Gefährdungen fest. Sie legt auch die Informationen fest, die vom Hersteller solcher Anlagen mitgeliefert werden müssen.
Sécurité des machines - Machines a laser - Prescriptions de sécurité (ISO 11553:1996 modifiée)
Varnost strojev - Laserski obdelovalni stroji - Varnostne zahteve (modificiran ISO 11553:1996)
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Varnost strojev - Laserski obdelovalni stroji - Varnostne zahteve (modificiran ISO 11553:1996)Sicherheit von Maschinen - Laserbearbeitungsmaschinen - Sicherheitsanforderungen (ISO 11553:1996 modifiziert)Sécurité des machines - Machines a laser - Prescriptions de sécurité (ISO 11553:1996 modifiée)Safety of machinery - Laser processing machines - Safety requirements (ISO 11553:1996 modified)31.260Optoelektronika, laserska opremaOptoelectronics. Laser equipmentICS:Ta slovenski standard je istoveten z:EN 12626:1997SIST EN 12626:1998en01-november-1998SIST EN 12626:1998SLOVENSKI
STANDARD
SIST EN 12626:1998
SIST EN 12626:1998
SIST EN 12626:1998
SIST EN 12626:1998
SIST EN 12626:1998
SIST EN 12626:1998
SIST EN 12626:1998
INTERNATIONAL STANDARD IS0 11553 First edition 1996-09-01 Safety of machinery - Laser processing machines - Safety requirements S&wit& des machines - Machines ;i laser - Prescriptions de s&writ6 Reference number IS0 11553:1996(E) SIST EN 12626:1998
IS0 11553:1996(E) Contents Page 1 Scope . . . 1 2 Normative references . 1 3 Definitions . 1 4 Hazards . . 2 4.1 Inherent hazards . 2 4.2 Hazards created by external effects (interferences) . 3 4.3 Hazards covered by this International Standard . 3 5 Safety requirements and measures . . 3 5.1 General requirements . 3 5.2 Risk assessment . . 3 5.3 I mplementation of corrective measures . . 3 6 Verification of safety requirements and measures . 6 7 Information for user . . 6 8 Labelling . . 7 Annexes A Guards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 B Potential hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 C Protection against other hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II D Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 0 IS0 1996 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii SIST EN 12626:1998
0 IS0 IS0 11553:1996(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 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 liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 11553 was prepared by Technical Committee lSO/TC 172, Optics and optical instruments, Subcommittee SC 9, Electra-optical systems, in collaboration with CEN/TC 123, Lasers and laser related equipment, and was correlated with lEC/TC 76. Annex A forms an integral part of C and D are for information only. this International Standard. Annexes B I SIST EN 12626:1998
IS0 11553:1996(E) 0 IS0 Introduction The Machinery Safety Directive issued by the Council of the EEC outlines essential and mandatory requirements that must be met in order to ensure that machinery is safe. In response, CEN/CENELEC initiated a programme to produce safety standards for machines and their applications. This International Standard is one in that series. It has been prepared as a harmonized standard to provide a means of conforming with the essential safety requirements of the Machinery Di- rective and associated EFTA Regulations. The extent to which hazards are covered is indicated in the scope. Ma- chinery should comply as appropriate with lSO/TR 12100 for hazards which are not covered by this International Standard. It is applicable to machines using laser radiation to process materials. The purpose of this International Standard is to prevent injuries to persons - by listing potential hazards generated by machines containing lasers; - by specifying safety measures and verifications necessary for reducing the risk caused by specific hazardous conditions; - by providing references to pertinent standards; - by specifying the information which is to be supplied to the users so that they can establish proper procedures and precautions. SIST EN 12626:1998
~~ INTERNATIONAL STANDARD 0 IS0 IS0 11553:1996(E) Safety of machinery - Laser processing machines - Safety requirements 1 Scope This International Standard describes hazards gener- ated by laser processing machines, as defined in 3.2, and specifies the safety requirements relating to radi- ation hazards and hazards generated by materials and substances. It also specifies the information to be supplied by manufacturers of such equipment. It is not applicable to laser products, or equipment containing such products, which are manufactured solely and expressly for the following applications: - photolithography; - stereolithography; - holography; - medical applications (per IEC 601-2-22); - data storage. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publica- tion, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most re- cent editions of the standards indicated below. Members of IEC and IS0 maintain registers of cur- rently valid International Standards. IS0 3864:1984, Safety co/ours and safety signs. IS0 I 1252: I 993, Lasers and laser-related equipment - Laser device - Minimum requirements for docu- mentation. lSO/TR 12100-I :I 992, Safety of machinery - Basic concepts, general principles for design - Part 7: Basic terminology, methodology. lSO/TR 12100-2:1992, Safety of machinery - Basic concepts, general principles for design - Part 2: Technical principles and specifica Cons. I EC 204-I : 1992, Electrical equipment of industrial machines - Part 7: General requirements. IEC 825-l :I 993, Safety of laser products - Part I: Equlpmen t classifica tlon, requirements and user’s guide. 3 Definitions For the purposes of this International Standard, the definitions given in lSO/TR 12100-I and IEC 825-l and the following definitions apply. 3.1 machine: Assembly of linked parts or compo- nents, at least one of which moves, with the appro- priate actuators, control and power circuits, etc., joined together for a specific application, in particular for the processing, treatment, moving or packaging of material. [lSO/TR 12100] 3.2 laser processing machine: Machine in which (an) embedded laser(s) provide(s) sufficient energy/power to melt, evaporate, or cause a phase transition in at least a part of the workpiece, and which machine has the functional and safety com- pleteness to be ready-to-use. 3.3 (preventive) maintenance: Performance of those adjustments or procedures specified in user in- formation, which are intended to be performed by the user for the purpose of assuring the intended per- formance of the product. SIST EN 12626:1998
IS0 11553:1996(E) 0 IS0 NOTE 1 Examples ables and cleaning. include replenishment of consum- 3.4 manufacturer: Individual or organization that assembles the laser processing machine. Where a laser processing machine is imported, the importer assumes the duties of the manufacturer. An individual or organization that is responsible for modification of a machine is regarded as a manufacturer. 3.5 modification: Change to the machine which makes it capable of processing materials in a manner which differs from the original design, or which makes it capable of processing materials different from what was envisaged in the original design, or which affects the safety characteristics of a machine. 3.6 process zone: Area where the laser beam interacts with the material of the workpiece. 37 used production: as intended, Phase du ring which includi ng the followi the machine is ng operations: - loading and unloading of parts and/or materials to be processed; this loading/unloading can be fully or partly automated or manual; - processing during which the laser beam works alone or in conjunction with other tools. 3.8 service (corrective maintenance): Performance of those procedures or adjustments described in the manufacturer’s service instructions which may affect any aspect of a product’s performance. NOTE 2 Examples include fault diagnosis, equipment strip-down and repairing. 3.9 subassembly: Constituent part needed for proper performance of the laser processing machine. A laser processing subassembly can be of any laser class in accordance with IEC 825-l. 3.10 workpiece: The material intended to be pro- cessed; the target of the laser beam. 4 Hazards The following subclauses outline areas of concern associated with materials processing with lasers. 4.1 Inherent hazards The following hazards (see lSO/TR 12100) may be generated by a laser processing machine: - mechanical hazards; - electrical hazards; - noise hazards; - thermal hazards; - vibration hazards; - radiation hazards; examples include hazards generated by direct or reflected laser beam, hazards generated by ionizing radiation, hazards generated by collateral (UV, micro- wave, etc.) radiation produced for example by flash lamps, discharge tubes, or RF-power sources, hazards generated by secondary radiation re- emitted by targets due to beam effect (the wavelength of the re-emitted radiation may be different from that of the beam); - hazards generated by materials and substances; examples include hazards due to products which are used in the machine (for example laser gases, laser dyes, lasing gases, solvents), hazards resulting from interaction between the beam and the material (for example fumes, particles, vapours, debris), fire or explosion, hazards from associated gases (see for example 5.3.3) used to assist laser target interactions and from any fumes that are pro- duced; these hazards include explosion, fire, toxic effects and oxygen depletion; - hazards generated by neglecting ergo nomic prin- ciples in machine design. SIST EN 12626:1998
0 IS0 IS0 11553:1996(E) 4.2 Hazards created by external effects (interferences) Power conditions and the environment in which the machine operates may cause the machine to mal- function, thus giving rise to hazardous conditions and/or making it necessary for someone to intervene within hazard zones. Additional environmental interferences include: - temperature; - humidity; - external shock/vibration; - vapours, dust or gases from the environment; - electromagnetic/radio frequency interference; - source voltage interruption/fluctuation; - insufficient hardware/software compatibility and integrity. 4.3 Hazards covered by this International Standard Only radiation hazards, and hazards generated by the laser interaction with materials and substances are dealt with in this International Standard. Information concerning other hazards is given in annex B. 5 Safety requirements and measures 5.1 General requirements Manufacturers shall ensure the safety or laser pro- cessing machines by: - hazard identification and analysis; - implementation of safety measures; - certification and verification of the safety meas- u res; - provision of appropriate information for the user. Based on the hazard identification (see 5.2) appropri- ate safety measures shall be incorporated into the laser processing machine by design and manufacture. The following requirements shall be satisfied: a ) each manufacturer shall comply with the safety requirements and measures stipulated in this clause; b) the manufacturer of an installed machine shall be responsible for the compliance of the whole ma- chine, including subassemblies. NOTE 3 These requirements apply even if the manufac- turer and the customer/user are the same legal entity. These measures shall take into account each hazard listed in clause 4, the results of the hazard analysis and information in annexes 8, C and D. 5.2 Risk assessment A risk assessment shall be performed a) for all phases of machine “life” (as applicable); for examples see ISO/TR 12100-I; b) after each modification of the machine by the person or organization responsible for the modifi- cation. A risk assessment includes but is not limited to a) hazards listed in 4.1 and 4.2; b) danger zones, particularly those associated with the laser system, the laser beam path/beam delivery system, the process zone; c) “interferences” listed in 4.2. The results of the risk assessment shall be duly documented. 53 . Implementation of corrective measures Safety measures shall be incorporated in the machine by design and manufacture as specified in 5.3.1 to 5.3.3. 5.3.1 Protection against laser radiation hazards 5.3.1 .I General The possibility that people be exposed to levels of laser radiation exceeding the accessible emission limit (AEL) for Class 1 shall be eliminated during production (normal or otherwise). Access to radiation in excess of AEL for Class 3A shall be eliminated for mainten- 3 SIST EN 12626:1998
IS0 11553:1996(E) 0 IS0 ante. To satisfy this, the following requirements shall be met. a) Unauthorized human access to a danger zone shall be prevented by engineering measures as stipulated in IEC 825-l and lSO/TR 12100. b) If human presence in a danger zone is unavoid- able while the machine is functioning (for example during servicing), the machine shall be equipped with means for direct control of machine motion, beam direction and beam stop (see 5.3.2.5). c) The design of protective devices, such as shut- ters, guards, beam dissipation devices, trip de- vices and deterring/impeding devices shall meet the requirements specified in IEC 825-l and lSO/TR 12100. In cases of ambiguity or difference of interpretation between lSO/rR 12100 and IEC 825-1, the first two sentences of 5.3.1 .I shall be definitive. d) One and the same protective device may be used to provide simultaneous protection against more than one hazard. In addition to the requirements of c), guards shall comply with requirements specified in annex Al). 5.3.1.2 Protection during production The principal danger zone is usually the process zone. At the process zone, one or more guards shall prevent human access during normal production to levels of laser radiation higher than the AEL for Class 1. The hazard analysis shall indicate which type of guarding - local protection or peripheral protection - is to be used. Local protection is a method of guarding to reduce laser radiation and associated optical radiation to a safe level - for example by means of a nozzle or a small guard fitted close to the beam focus at the workpiece - without totally enclosing the workpiece, the workpiece support and/or machine motion sys- tem. Peripheral protection is a method of guarding to re- duce laser radiation and associated optical radiation to a safe level by means of one or more distant guards (for example a protective enclosure) that enclose the workpiece, workpiece support and, usually, most of the machine motion system. The sort of protection will depend on several factors, for instance: - the direction (fixed or variable) of beam propa- gation with regard to the workpiece; - the type of machining operation to be realized (cutting, welding, etc.); - the material and shape of the workpiece to be processed; - the workpiece support; - the visibility of the process zone. 5.3.1.3 Protection during service During service procedures, human access to laser radiation exceeding the AEL for Class 1 is sometimes unavoidable. Machines shall therefore be designed and appropriate safety measures provided, with re- spect to the following four situations (listed in order of preference): a) b) Servicing takes place outside danger zones. Servicing takes place in danger zones to which access is controlled in the same manner as during production (for example interlocked cover). d Servicing takes place in a danger zone (for example with open guards th
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