Source: http://unimaxswitch.com/Standards.htm
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UNIMAX STANDARDS
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The following list shows some of the A and B Standards of relevance. Where they are prefixed BS EN or EN they are published or approved standards.
Where they are prefixed prEN they have not yet reached the final publication stage. Most of these standards are published as IEC or ISO international standards (the title numbers may not be the same as the EN version).
EN 292 parts 1 and 2 - Safety of machinery - Basic concepts, general principles for design.
Absolute compulsory reading for all. It is an A standard which outlines all the basic principles including risk assessment, guarding, interlocking, emergency stops, trip devices, safety distances and much more. It refers the other standards and also includes the essential safety requirements from the Machinery Directive.
EN 60204-1 - Safety of machinery - Electrical equipment of machines - Part 1 General requirements.
This is a very important standard. It gives general and specific recommendations for safety-related aspects of wiring and electrical equipment on machines.
EN 1088 - Safety of machinery - Interlocking devices associated with guards - Principles for design and selection.
Gives principles for the design and selection of interlocking devices associated with guards.
In order to verify mechanical switches it refers to EN 60947-5-1 - Low-voltage switchgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices. In order to verify non-mechanical switches it refers to EN 60947-5-3 - Low-voltage switchgear - Part 5-3: Control circuit devices and switching elements - proximity devices with defined behaviour under fault conditions.
EN 954 - Safety of machinery - Safety-related parts of control systems - Part 1: General principles for design.
This standard outlines requirements for safety-critical parts of machine control systems and describes five catergories of performance under fault conditions - B, 1, 2, 3 and 4. It is important to achieve a working knowledge of this document as its categories are becoming widely used as a common “language” for describing the performance of safety related control systems (see section 7).
IEC 61508 - Functional safety of electrical/electronic/ programmable electronic safety-related systems.
Sets out a generic approach for systems that are used to perform safety functions. Includes the allocation and verification of four safety integrity levels (SIL).
Draft IEC 62061 - Functional safety of electrical/electronic/ programmable electronic safety-related systems.
The same outline as IEC 61508 but being drafted as a sector standard specifically for machinery.
EN 953 - Safety of machinery - General requirements for the design and construction of guards.
Gives definitions, descriptions and design requirements for fixed and movable guards.
EN 1037 - Safety of machinery - Isolation and energy dissipation - Prevention of unexpected start-up.
Defines measures aimed at isolating machines from power supplies and dissipating stored energy to prevent unexpected machine startup and allow safe intervention in danger zones.
BS EN 418 - Safety of machinery - Emergency-stop devices, functional aspects - Principles for design.
Gives design principles and requirements.
EN 1050 - Safety of machinery - Principles for risk assessment.
Outlines the fundamentals of the process of assessing the risks during the life of the machinery. It is a summary and is not intended to provide a detailed account of methods for analysing hazards and estimating risks.
EN 999 - Safety of machinery - The positioning of protective equipment in respect of approach speeds of parts of the human body.
Provides methods for designers to calculate the minimum safety distances from a hazard for specific safety devices. In particular for electro-sensitive devices (e.g. light curtains), pressure-sensitive mats/floors and two-hand controls. It contains a principle for the positioning of safety devices based on approach speed and machine stopping time which can reasonably be extrapolated to cover interlocked guard doors without guard locking.
EN 574 - Safety of machinery - Two-hand control devices - Functional aspects - Principles for design.
Provides requirements and guidance on the design and selection of two-hand control devices, including the prevention of defeat and the avoidance of faults.
EN 294 - Safety of machinery - Safety distances to prevent danger zones being reached by the upper limbs.
Gives data for calculation of safe aperture sixes and positioning for guards, etc.
EN 811 - Safety of machinery - Safety distances to prevent danger zones being reached by the lower limbs.
Gives data for calculation of safe aperture sizes and positioning for guards, etc.
EN 349 - Safety of machinery - Minimum distances to avoid crushing parts of the human body.
Gives data for calculation of safe gaps between moving parts, etc.
IEC 61496 - Safety of machinery - Electro sensitive protective equipment - Parts 1 & 2.
Part 1 gives requirements and test procedures for the control and monitoring aspects for electro sensitive protective equipment. Subsequent parts deal with aspects particular to the sensing side of the system.
Part 2 give particular requirements for safety light curtains.
EN 1760-1 - Safety of machinery - Pressure-sensitive safety devices - Part 1: Mats and floor.
Gives requirements and test procedures.
prEN 1760-2 Safety of machinery - Pressure-sensitive safety devices - Part 2: Edges and bars.
A large range of EN type “C” standards is being published to cover specific types or groups of machines.
Implemented in the UK as The Supply of Machinery (Safety) Regulations 1992.
This directive covers the supply of new machinery and other equipment including safety components. In most cases it is an offence to supply relevant equipment unless it complies with the directive. This means that it must satisfy the Essential Health and Safety Requirements (EHSR) of the directive, a correct conformity assessment must be carried out, and a Declaration of Conformity must accompany the equipment. Machinery in particular must carry the familiar CE marking which indicates a claim of conformity for all relevant product directives.
The Use of Work Equipment by Workers at Work Directive
Implemented in the UK as The Provision and Use of Work Equipment Regulations 1998 (often abbreviated to PUWER). Whereas the Machinery Directive is aimed at suppliers, this directive is aimed at users of machinery. It covers all industrial sectors and it places general duties on employers together with minimum requirements for the safety of work equipment. They are of particular relevance to existing pre-Machinery Directive machinery (newer machinery will already conform with the equivalent requirements of the Machinery Directive).
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