BS EN ISO Safety of machinery – Basic concepts, general principles for design – Part 1: Basic terminology, methodology. [Note that EN ISO and EN have both been superseded by EN ISO – Ed, 31 December ]. EN ISO IEC – 1. Electrical. Equipment. BS EN Safety of machinery. Rules for drafting and. Presentation of safety standards. BS ISO
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It shall not exclude uses of the machine that can reasonably be expected from its designation and description and shall also warn about the risk which would result from using the machine in other ways than the ones described in the information, especially considering its reasonably foreseeable misuse. Again there may be more recent versions of the document. Specify the limits and the intended use of the machine; Identify the hazards and associated hazardous situations; Estimate the risk, for each identified hazard and hazardous situation; Evaluate the risk and take decisions about the need for risk reduction; Eliminate the hazard or reduce the risk associated with the hazard by protective measures.
Safety distances to prevent hazard zones being reached by upper and lower limbs.
Safety of machinery: EN ISO 12100-1 and EN ISO 12100-2
Manual controls 12100–1 be located out of reach of the danger zones see IECexcept for certain controls where, of necessity, isi are located within a danger zone, such as emergency stop or teach pendant. It shall also take account of the incentive to defeat or circumvent protective ej when, for example, a b c d the protective measure slows down production or interferes with another activity or preference of the user, the protective measure is difficult to use, persons other than the operator are involved, or the protective measure is not recognized by the user or not accepted as being suitable for its function.
NOTE In some countries the use of specific language s is covered by legal requirements. When estimating risk, those components and systems identified as immediately increasing the risk in case of failure need special attention. With this in view, it shall inform and warn the user about residual risk. Movement of the lifting platform shall be prevented while the guards are open. Each position of the selector shall be clearly identifiable and shall exclusively allow one control or operating mode.
NOTE 1 Annex B gives, in separate tables, examples of hazards, hazardous situations and hazardous events, in order to clarify these concepts and assist the designer in the process of hazard identification. This is because protective measures inherent to the characteristics of the machine are likely to remain effective, whereas experience has shown that even well-designed safeguarding can fail or be violated and information for use may not be followed. The provisions stated in this standard are intended for the designer.
Clause 6, ‘Information for use,’ outlines what shall be provided. When determining these elements, it is necessary to take into account the aspects given in 5. For some special machinery other protective measures can be appropriate. Whether or not a protective measure can be defeated depends on both the type ej protective measure, such as an adjustable guard or programmable trip device, and its design details.
Uso is given on the documentation and verification b the risk assessment and risk reduction process. BS E Infor They shall be designed to prevent hazards due to unintended opening. NOTE 2 Muting is the temporary automatic suspension of a safety function s by safety-related parts of the wn system see ISO For undated references, the latest edition of the referenced document including any amendments applies.
Safety of Machinery: EN ISO and EN ISO
When carrying out a risk assessment, the risk from iiso most likely severity of the harm that is likely to occur from eh identified hazard shall be considered, but the highest foreseeable severity shall also be taken into account, even if the probability of such an occurrence is not high. NOTE A quantitative approach can be appropriate when useful data is available.
Typical causes of hazardous machine behaviour are? As part of this iterative process, the designer shall also check whether additional hazards are introduced or other risks increased when new protective measures are applied.
For detailed consideration of the fault behaviour of, for example, active optoelectronic protective devices, IEC should be taken into account.
NOTE Also improved are the performance and reliability of operation ej hence the reduction in the probability of errors at all stages of machine use. Standardized phrases shall be considered where important messages such as warnings are given see bss IEC Avoiding sharp edges and corners, protruding parts: NOTE If the protective measure cannot easily be maintained in correct working order, this can encourage the defeat or circumvention of the protective measure in order ixo allow continued use of the machinery.
It is harmonised to the Machinery Directive, so complying with its requirements and those of other relevant harmonised standards will generally be the shortest route to demonstrating that the Essential Health and Safety Requirements of the Directive have been met.
Annex B gives examples of hazards, hazardous situations and hazardous events to assist in this process. Want access to British Standards? NOTE 1 Sensitive protective equipment shall be integrated in the operative part and associated with the control system of the machine so that? Factors to be taken into account when estimating the occurrence of a hazardous event are, among others, a b c d reliability and other statistical data, accident history, history of damage to health, and comparison of risks see 5.
NOTE 2 Adequate protective measures associated with each of the operating 12100–1 and intervention procedures reduce the possibility of operators being induced to use hazardous intervention techniques in case of technical difficulties. Which column is used depends on whether the origin of the hazard or nature of the consequences is most useful when choosing an appropriate protective measure.
Appropriate words should be selected and combined to describe the hazard in the most convenient way. Account shall be taken of body sizes likely to be found in the intended user population, strengths and postures, movement amplitudes, frequency of cyclic actions see ISO and ISO The walking areas shall be made from materials which remain as slip resistant as practicable under working conditions and, depending on the height from the ground, shall be provided with suitable guard-rails see ISO These attachments may be, among others,?
EN ISO Part 2 of the standard Technical principles generally contains practical advice that can be implemented when designing machinery.
Information for use Where risks remain despite inherently safe design measures, safeguarding and the adoption of complementary protective measures, the residual risks shall be identified in the information for use. It specifies principles of risk assessment and risk reduction to help designers in achieving this objective. NOTE Consultation of the user on this subject is often necessary.
Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards. Taking into account general technical knowledge of machine design 3 4 6. In carrying out this process, it is necessary to take into account these four factors, in the following order of preference: A hazardous event can have different causes.
The exposure of a person is often the consequence of performing a task on the machine. Measures which can be incorporated at the design stage are preferable to those implemented by the user and usually prove more effective. Factors to be taken into account when estimating the exposure are, among isi, a b c d the need for access to the hazard zone for normal operation, correction of malfunction, maintenance or repair, etc.
Figure 2 — Risk reduction process from point of view of designer?