iso – Download as PDF File .pdf), Text File .txt) or read online. Safety of Machinery Documents Similar To iso Bs en Iso – Part 2. EN ISO and EN ISO are Type A standards (basic safety standards) and therefore have a dual purpose: they are. BRITISH STANDARD BS EN ISO Incorporating Corrigendum No. 1 Safety of machinery — Basic concepts, general principles for.
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It is identical with ISO It supersedes BS EN 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 necessary provisions of a contract. Users are responsible for its correct application.
BS EN ISO _百度文库
Compliance with a British Standard does not of itself confer immunity from legal obligations. The BSI copyright notice displayed in this document indicates when the document was last issued.
Amendments issued since publication Amd.
Date Comments Corrigendum No. Technical principles ISO Principes techniques ISO Up-to-date lists and bibliographical references concerning such national standards ixo be obtained on application to the Management Centre or to any CEN member.
A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. This European Standard shall be given the status of a national standard, either by publication bbs an identical text or by endorsement, at the latest by Mayand conflicting national standards shall be withdrawn at the latest by May This document supersedes EN Endorsement notice The text of ISO In ccaocnadrw eith A’ebods licensilop gnic,y this file mairp eb ynted iv roweb detu slahl ton ide ebtlnu deess the typefaces whice era hml era deddebicsnede to i dnanstlaled iiso noeh computfrep reormign tide ehtin.
In tlnu ehikletneve y ttah lborp aem leratit gno it is f,dnuo plsaee inform ttneC ehlar Secrteiraat ta the serddaig sleb nevwo. The work of preparing 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 liaison with ISO, also take part in the work.
The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Attention is drawn to the possibility that 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. ISO consists of the following parts, under the general title Safety of machinery — Basic concepts, general principles for design: Technical principles, giving advice on how this philosophy can be applied using available techniques.
It also provides a strategy for standard makers. The concept of safety of machinery considers the ability of a machine to perform its intended function s during its lifecycle where risk has been adequately reduced.
BS EN ISO 12100-2:2003+A1:2009
This standard is the basis for a set of standards which has the following structure: This standard is a type-A standard. The subject of numerous clauses or subclauses of this standard is also dealt with, in a more detailed manner, in other type-A or B standards. When a type-C standard deviates eb one or more provisions dealt bx by Part 2 of this standard or by a type-B standard, the type-C standard takes precedence.
It is recommended that this standard be incorporated in training courses and manuals to convey basic terminology and general design methods to designers. Technical principles 1 Scope This standard defines technical principles to help designers in achieving safety in the design of machinery. ISO is intended to be used together with ISO when considering the solution to a specific problem. The two parts of ISO can be used independently of other documents or as a basis for the preparation of other type-A standards or type-B or -C standards.
This standard does not deal with damage to domestic animals, property or the environment.
For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document including any amendments applies. NOTE Clause 5 gives safeguarding ido complementary measures to achieve the risk reduction objectives where inherently safe design measures are not sufficient see 3-step method in ISO In so far as their purpose allows, accessible parts of the machinery shall have no sharp edges, no sharp angles, no rough surfaces, no protruding parts likely to cause injury, and no openings which may “trap” parts of the body or clothing.
In particular, sheet metal edges shall be deburred, flanged or trimmed, open ends of tubes which may cause a “trap” shall be capped; designing the ne of the rn to achieve a proper working position and accessibility of manual controls actuators. These should be used to cover: When the reliability of particular components or assemblies is critical for safety e. An example of this is positive opening operation of switching devices in an electrical circuit see IEC —1 and ISO NOTE Where a mechanical component moves and thus allows another one to move freely e.
Factors to be taken into account include: Stability shall be considered in all phases of the life of the machine, including handling, travelling, installation, use, de-commissioning and dismantling.
Other protective measures for stability relevant to safeguarding are given in 5. These principles shall be considered when allocating functions to operator 12100–2 machine degree of automation in the basic design. NOTE It also improves the performance and reliability of the operation and hence it reduces the probability of errors at all stages of machine use. 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 All elements of the “operator-machine” interface such as controls, signalling or data display elements, shall be designed to be easily understood so that clear and unambiguous interaction between the operator and the machine is possible.
Designers’ attention is especially drawn to following ergonomic aspects of machine design: Flicker, dazzling, shadows and stroboscopic effects shall be avoided if they can cause a risk. If the position of the lighting source has to be adjusted, its location shall be such that it does not cause any risk to persons making the adjustment. See also EN Where a control is designed and constructed to perform several different een, namely where there is no one-to-one correspondence e.
Controls shall be so arranged that their layout, travel and resistance to operation are compatible with the action to be performed, taking account of ergonomic principles. Constraints due to the necessary or foreseeable use of personal protective equipment such as footwear, gloves shall be taken into account. For requirements related to specific machines, see corresponding IEC standards e.
The correct design of machine control systems can avoid unforeseen and potentially hazardous machine behaviour. Typical causes of hazardous machine behaviour are: In order to prevent hazardous machine behaviour and to achieve safety functions, the design of control systems shall comply with the principles and methods presented in this subclause iiso. These principles and methods shall be applied singly or in combination as appropriate to the circumstances see ISO and IEC Control systems shall be designed to enable the operator to interact with the machine safely and easily; this requires one or several of the following solutions: The different zones shall be clearly defined and it shall be obvious which parts of the machine belong to which zone.
Likewise it shall be obvious which control devices e. The interfaces between zones shall be designed such that no function in one zone creates hazards in another zone which has been stopped for an intervention. Allowance shall be made for dynamic effects e. When machinery is designed to use synchronously different elements isp can also be used independently, the control system shall be designed to prevent risks due to lack of synchronization.
The primary action for stopping or slowing down bd be performed by removal or reduction of voltage or fluid pressure, or, if binary logic elements are considered, by passage from state 1 to state 0 if state 1 represents the highest energy state. NOTE In certain applications e. Then, other measures should be applied to achieve the same level of confidence for the stopping or slowing down.
When, in io for the operator to maintain permanent control of deceleration, this principle is not observed e. At least the following requirements shall be met: In either case, the protective measure can be initiated immediately or delayed until a specific event occurs e. The protective measures may be, e.
Where a programmable electronic control system is used it is necessary to consider its performance requirements in relation to the requirements for the safety functions.
The design of the programmable electronic control system shall be such that the probability of random hardware failures and the likelihood of systematic failures that can adversely affect the performance of the safety-related control function s are sufficiently low. Where a programmable electronic control system performs a monitoring function, the system behaviour on detection of a fault shall be considered see also IEC series for further guidance.
Safety of machinery: EN ISO 12100-1 and EN ISO 12100-2
The programmable electronic control system should be installed and validated to ensure that the specified performance e. Validation comprises testing gs analysis e. This may be achieved by use of embedded software in a non re-programmable memory e.
When the application requires reprogramming by the user, the access to the software dealing with safety functions should be restricted e. The driver of a ride-on mobile machine shall be able to actuate 11200-2 control devices required to operate the machine from the driving position, except for functions which can be controlled more safely from other positions.
On machinery intended for lifting persons, controls for lifting and lowering and, if appropriate, for moving the carrier, shall generally be located in the carrier. If safe operation requires controls to be iiso outside the carrier, the operator in the carrier shall be provided with the means of preventing hazardous movements.
This applies especially to machines which can be manually controlled by means among others of a hs control unit teach pendant, for instancewith which the operator may enter danger zones.
NOTE For some special machinery other protective measures may be appropriate. This control mode shall be associated with one or more of following measures: Each position of the selector bss be clearly identifiable and shall exclusively allow one control or operating mode.
The selector may be replaced by another selection means which restricts the use of certain functions of the machinery to certain categories of operators e. NOTE Such systems not only improve availability and maintainability of machinery; they also reduce the exposure of maintenance staff to hazards. The continued operation of the safety functions is essential for the safe ido of the machine. This can be achieved by: Components shall be selected taking into account all factors mentioned above see also 4.
NOTE 2 Environmental conditions which are to be taken into consideration are, for instance: