1、|BRITISH STANDARD BS EN 741:2000ICS 53.040.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWContinuous handling equipment and systems Safety requirements for systems and their components for pneumatic handling of bulk materials+A1:2010National forewordThis British Standard is
2、the UK implementation of EN 741:2000+A1:2010. It supersedes BS EN 741:2000, which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags.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 MHE/9, Continuous Mechanical handling equipment.A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to includ
4、e all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. BS EN 741:2000+A1:2010This British Standard, having been prepared under the direction of the Engineering Sector Committee
5、, was published under the authority of the Standards Committee and comes into effect on 15 May 2000 BSI 2011Amendments/corrigenda issued since publicationDate Comments 30 April 2011 Implementaion of CEN amendment 1:201.ISBN 978 0 580 70591 5EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 741:20
6、00+A1 December 2010 ICS 53.040.30 Supersedes EN 741:2000English Version Continuous handling equipment and systems - Safety requirements for systems and their components for pneumatic handling of bulk materials Equipements et systmes de manutention continue - Prescriptions de scurit pour les systmes
7、et leurs composants pour la manutention pneumatique des produits en vrac Stetigfrderer und Systeme - Sicherheitsanforderungen an Systeme und ihre Komponenten zur pneumatischen Frderung von Schttgut This European Standard was approved by CEN on 1 July 1999 and includes Amendment 1 approved by CEN on
8、16 November 2010. 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 bibliographical references concerning such national standards ma
9、y be obtained on application to the CEN-CENELEC 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 CEN member into its own language and notified
10、to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lu
11、xembourg, 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: Avenue Marnix 17, B-1000 Brussels 2010 CEN All r
12、ights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 741:2000+A1:2010: EEN 741:2000+A1:2010 (E) 2 Contents Foreword 3Introduction . 41 Scope 52 Normative references 53 Terms and definitions . 64 List of hazards 205 Safety requirements and/or saf
13、ety measures . 206 Verification of safety requirements and/or measures 247 Information for use 26Annex A (normative) List of hazards according to !EN ISO 12100-1“ in comparison with annex I of the “Machinery Directive“. 31Annex B (informative) Bibliography 33Annex C (informative) Fire or explosion h
14、azard 34Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of the EU Directive 2006/42/EC“ 35BS EN 741:2000+A1:2010EN 741:2000+A1:2010 (E) 3 Foreword This document (EN 741:2000+A1:2010) has been prepared by Technical Committee CEN/TC 148 “Continuous ha
15、ndling equipment and systems - Safety“, the secretariat of which is held by AFNOR. 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 June 2011, and conflicting national standards shall be withdrawn
16、at the latest by June 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document includes Amendment 1, approved by CEN on 201
17、0-11-16. This document supersedes EN 741:2000. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports
18、essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this standard. This standard forms part of a series of five standards the titles of which are given below: EN 617, !Continuous handling equipment and systems Safet
19、y and EMC requirements for the equipment for the storage of bulk materials in silos, bunkers, bins and hoppers“ EN 618, !Continuous handling equipment and systems Safety and EMC requirements for equipment for mechanical handling of bulk materials except fixed belt conveyors“ EN 619, !Continuous hand
20、ling equipment and systems Safety and EMC requirements for equipment for mechanical handling of unit loads“ EN 620, !Continuous handling equipment and systems Safety and EMC requirements for fixed belt conveyors for bulk materials“ EN 741, Continuous handling equipment and systems Safety requirement
21、s for systems and their components for pneumatic handling of bulk materials !deleted text“ According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Cz
22、ech 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 United Kingdom. BS EN 741:2000+A1:2010EN 741:2000+A1:2010 (E) 4
23、 Introduction This European standard is a type C standard as defined in !EN ISO 12100-1“. When provisions of this type C standard are different from those which are stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of the other standards, for
24、 systems and components that have been designed and built according to the provisions of this type C standard. While producing this standard it was assumed that: - only trained persons operate the machine; - parts without specific requirements are: a) designed in accordance with the usual engineerin
25、g practice and calculation codes, including all failures modes; b) of sound mechanical and electrical construction; c) made of materials with adequate strength and of suitable quality; d) made of materials free of defects; - harmful materials, such as asbestos are not used as part of the system and
26、components; - components and system are kept in good repair and working order, so that the required characteristics remain despite wear; - by design of the load bearing elements, a safe operation of the system and components is assured for loading ranging from zero to 100 % of the rated possibilitie
27、s and during the tests; - the ambient air temperature is maintained between - 15 C and + 40 C; - the relative humidity is kept between limits which do not impede the safe working of the system and components; - the components (see clause 3.4) are not exposed to external vibration; !deleted text“ - a
28、 negotiation takes place between the user / installer and the manufacturer concerning the particular conditions for the use and places of use of the machinery; - the working area is adequately lit; - the places of installation allow a safe use of the system; - safety data sheets on the bulk material
29、s to be conveyed are provided by the user / installer and are part of the design criteria. EN 617, EN 618 and EN 620 may need to be considered for a complete continuous handling system (machine). BS EN 741:2000+A1:2010EN 741:2000+A1:2010 (E) 5 1 Scope 1.1 This standard specifies the special safety r
30、equirements for those types of fixed pneumatic handling systems and components as defined in clause 3, which are designed for conveying bulk materials on a continuous or an intermittent basis (batch conveying system) from the loading point(s) to the unloading point(s). 1.2 This European standard dea
31、ls with the technical requirements to minimise the hazards listed in clause 4 which can arise during the operation and the maintenance of the pneumatic conveying system. when carried out in accordance with the specifications given by the manufacturer or his authorised representative. Annex A gives a
32、 list of hazards according to !EN ISO 12100-1“. and the safety requirements and/or measures are specified in the same order as they are given in Annex A. 1.3 This standard applies to design, on site assembly, and commissioning stages. 1.4 This standard applies also to the built-in actuators and part
33、s of the systems, which control the components. 1.5 Exclusions This standard does not specify the requirements for any elements used as a link between a fixed part(s) of the system and any other part mounted on mobile/movable supports (e.g.: ship, unloaders, .). This standard does not take into acco
34、unt the risks of burns and scalds by the radiation of heat sources or by contact with hot gases. This standard does not take into account the risk generated by ionising materials used in measuring equipment (e.g. level indicators). This standard does not specify the requirements for handling specifi
35、c hazardous materials, such as radiating material, explosives, explosive gases, . This standard does not specify the requirements for hazards due to electrostatic charges of pipes and equipment made of non-metallic materials. The safety requirements for the transportation including loading and unloa
36、ding of the components are not covered by this standard. This standard does not apply to pneumatic conveying systems used underground, for mining and in public areas. This European standard does not establish the additional requirements for: freezer applications, high temperatures, corrosive environ
37、ments, strong magnetic fields, potentially explosive atmospheres, radioactive environment, operation on ships and earthquake effects, hazards during decommissioning. !This standard does not specify the requirements for hazards due to noise.“ 2 Normative references !The following referenced documents
38、 are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.“ !deleted text“ EN 349:1993, Safety of machinery Minimum gaps to avoid crushing of
39、parts of the human body !deleted text“ EN 953:1997, Safety of machinery Guards General requirements for the design and construction of fixed and movable guards EN 1037:1995, Safety of machinery Prevention of unexpected start-up BS EN 741:2000+A1:2010EN 741:2000+A1:2010 (E) 6 EN 1050:1996, Safety of
40、machinery Risk assessment EN 1070: 1998, Safety of machinery Terminology EN 1088:1995, Safety of machinery Interlocking devices associated with guards Principles for design and selection EN 1127-1:1997, Safety of machinery Fire and explosions Part 1: Explosion prevention and protection !deleted text
41、“ EN 50014:1992, Electrical apparatus for potentially explosive atmospheres General requirements EN 50082-2:1995, Electromagnetic compatibility Generic immunity standard Part 2: Industrial environment !EN 60204-1:2006, Safety of machinery Electrical equipment of machines Part 1: General requirements
42、 (IEC 60204-1:2005, modified)“ EN 60529:1991, Degrees of protection provided by enclosures (code IP) EN 61310-2:1995, Safety of machinery Indication, marking and actuation Part 2: Requirements for marking EN 1672-2:1997, Food processing machinery Basic concepts Part 2: Hygiene requirements CENELEC R
43、044-001:1999, Guidance and recommendations for the avoidance of hazards due to static electricity !EN ISO 12100-1, Safety of machinery Basic concepts, general principles for design Part 1: Basic terminology, methodology (ISO 12100-1:2003)“ !EN ISO 12100-2:2003, Safety of machinery Basic concepts, ge
44、neral principles for design Part 2: Technical principles (ISO 12100-2:2003)“ !EN ISO 13732-1, Ergonomics of the thermal environment Methods for the assessment of human responses to contact with surfaces Part 1: Hot surfaces (ISO 13732-1:2006)“ !EN ISO 13850, Safety of machinery Emergency stop Princi
45、ples for design (ISO 13850:2006)“ !EN ISO 13857:2008, Safety of machinery Safety distances to prevent hazard zones being reached by upper and lower limbs. (ISO 13857:2008)“ !EN ISO 14122-1, Safety of machinery Permanent means of access to machinery Part 1: Choice of fixed means of access between two
46、 levels (ISO 14122-1:2001)“ !EN ISO 14122-2:2001, Safety of machinery Permanent means of access to machinery Part 2: Working platforms and walkways (ISO 14122-2:2001) “ !EN ISO 14122-3, Safety of machinery Permanent means of access to machinery Part 3: Stairs, stepladders and guard-rails (ISO 14122-
47、3:2001)“ !EN ISO 14122-4, Safety of machinery Permanent means of access to machinery Part 4: Fixed ladders (ISO 14122-4:2004)“ ISO 3864:1984, Safety colours and safety signs 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply in addition to t
48、hose stated in EN 1070: BS EN 741:2000+A1:2010EN 741:2000+A1:2010 (E) 7 3.1 pneumatic conveying system a system (see 3.2 and 3.3) for the pneumatic conveying of loose bulk materials in pipes (ducts) by means of gas, usually air, including the piping and components (see 3.4) and limited to them 3.2 s
49、ystems related terms 3.2.1 open and closed systems open systems operate on a once-through basis with regard to the conveying gas. In closed systems the conveying gas is recirculated and all or part of this gas is reused 3.2.2 continuous and batch conveying systems continuous conveying systems are those in which flow of gas an
