1、|BRITISH STANDARD |BS EN | 1114-2:1998 +|machines Extruders and extrusion lines Part 2: Safety requirements for die face ICS 83.200 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW |A1:2008| P ubber and lastics rpelletisersNational forewordThis British Standard is the UK implem
2、entation of EN 1114-2:1998+A1:2008. It supersedes BS EN 1114-2:1998 which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags.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 amendme
3、nt A1 is indicated by !“.The UK participation in its preparation was entrusted by Technical Committee MCE/3, Safeguarding of machinery, to Subcommittee MCE/3/2, Rubber and plastics machine Safety.A list of organizations represented on this subcommittee can be obtained on request to its secretary. Th
4、is publication does not purport to include 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 1114-2:1998+A1:2008This British Standard was published under the authority
5、 of the Standards Board and comes into effect on 15 June 1998 BSI 2009ISBN 978 0 580 61051 6Amendments/corrigenda issued since publication Date Comments 30 June 2009 Implementation of CEN amendment A1:2008EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1114-2:1998+A1 September 2008 ICS 83.200 S
6、upersedes EN 1114-2:1998 English Version Plastics and rubber machines - Extruders and extrusion lines - Part 2: Safety requirements for die face pelletisers Machines pour les matires plastiques et le caoutchouc - Extrudeuses et lignes dextrusion - Partie 2: Prescriptions de scurit pour les granulate
7、urs en tte Kunststoff- und Gummimaschinen - Extruder und Extrusionsanlagen - Teil 2: Sicherheitsanforderungen fr Kopfgranulatoren This European Standard was approved by CEN on 26 January 1998 and includes Amendment 1 approved by CEN on 8 June 2008. CEN members are bound to comply with the CEN/CENELE
8、C 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 may be obtained on application to the CEN Management Centre or to any C
9、EN 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 to the CEN Management Centre has the same status as the official versions. CE
10、N members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sw
11、eden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membe
12、rs. Ref. No. EN 1114-2:1998+A1:2008: EEN 1114-2:1998+A1:2008 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 4 2 Normative references 4 3 Definitions 5 4 Hazards and Danger Zones 7 4.1 List of hazards7 4.1.1 Mechanical hazards.7 4.1.2 Loss of stability7 4.1.3 Hazards due to electrical energy7
13、4.1.4 Hazards due to hydraulic or pneumatic energy .7 4.1.5 Hazards due to failure of safety related parts of control systems .8 4.1.6 Thermal hazards 8 4.1.7 Hazards due to noise.8 4.1.8 Hazards due to materials and substances processed, used or exhausted by the machine .8 4.2 Danger zones .8 4.2.1
14、 Subdivision into danger zones.8 4.2.2 Examples of die face pelletisers 8 5 Safety requirements and/or measures 12 5.1 Mechanical hazards.12 5.2 Stability .14 5.3 Electrical equipment14 5.4 Hydraulic and pneumatic equipment.14 5.5 Safety related control systems.15 5.5.1 Safety related parts of contr
15、ol systems 15 5.5.2 Emergency stopping device .15 5.6 Thermal hazards 15 5.7 Noise .16 5.7.1 Noise reduction at source by design.16 5.7.2 Determination of noise emission values.16 5.8 Materials and substances processed, used or exhausted by the machine.17 6 Verification of Conformity with Safety Req
16、uirements and/or Measures17 7 Information for use 18 7.1 Minimum marking on the machine.18 7.2 Instruction manual.19 Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC“.21 Annex ZB (informative) !Relationship between this Europ
17、ean Standard and the Essential Requirements of EU Directive 2006/42/EC“.22 BS EN 1114-2:1998+A1:2008EN 1114-2:1998+A1:2008 (E) 3 Foreword This document (EN 1114-2:1998+A1:2008) has been prepared by Technical Committee CEN/TC 145 “Plastics and rubber machines”, the secretariat of which is held by UNI
18、. 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 March 2009, and conflicting national standards shall be withdrawn at the latest by December 2009. This document includes Amendment 1, approved by
19、CEN on 2008-06-08. The main changes compared to the previous version are: modification of the main element of the title editorial modification of Annex ZA addition of Annex ZB editorial changes of EN 292-1:1991 to EN ISO 12100-1:2003 and of EN 292-2:1991 to EN ISO 12100-2:2003 in the following claus
20、es and sub-clauses: Introduction, 2, 5.6, 5.7, 5.8, Table 1, 7.1, 7.2 minor changes in the Foreword and in sub-clauses 5.7.2 and 7.1, second paragraph. This document supersedes EN 1114-2:1998. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. This
21、European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). !For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this doc
22、ument.“ This is the second in a series of standards on the safety of extruders and extrusion lines. Part 1 deals with extrudors. Part 2 deals with haul-offs. Further parts are under discussion. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following c
23、ountries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
24、Spain, Sweden, Switzerland and United Kingdom. BS EN 1114-2:1998+A1:2008EN 1114-2:1998+A1:2008 (E) 4 Introduction This European Standard is a type C Standard as defined in !EN ISO 12100“. The extent to which hazards are covered is indicated in the scope of this standard. In addition, machinery shall
25、 comply as appropriate with !EN ISO 12100“ for hazards which are not covered by this standard. 1 Scope This European Standard specifies safety requirements for the design and construction, in respect of the hazards listed in clause 4 and dealt with in clause 5, of the following kinds of die face pel
26、letisers used with extruders for pelletising of plastics and rubber: Underwater pelletisers; Water ring pelletisers; Dry pelletisers; Centrifugal pelletisers; Knife rotor pelletisers. Strand pelletisers are not subject to this standard. They are dealt with in a separate standard being produced by CE
27、N/TC 145/WG6. This standard does not cover requirements for the design of any exhaust system. This standard applies to machines which are manufactured after the date of publication by CEN of the standard. 2 Normative references This European standard includes by dated or undated reference provisions
28、 from other publications. These normative references are quoted at the appropriate places in the text and the publications are listed hereafter. For dated references subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by ame
29、ndment or revision. For undated references the latest edition of the publication referred to applies. !deleted text“ EN 294:1992, Safety of machinery Safety distances to prevent danger zones being reached by the upper limbs EN 418:1992, Safety of machinery Emergency stop equipment, functional aspect
30、s Principles for design EN 563:1994, Safety of machinery Temperatures of touchable surfaces Ergonomic data to establish temperature limit values for hot surfaces EN 626-1:1994, Safety of machinery Principles for machinery manufacturers on the reduction of risk to health from hazardous substances emi
31、tted by machinery BS EN 1114-2:1998+A1:2008EN 1114-2:1998+A1:2008 (E) 5 EN 811:1996, Safety of machinery Safety distances to prevent danger zones being reached by the lower limbs EN 953:1997, Safety of machinery Guards General requirements for the design and construction of fixed and movable guards
32、EN 954-1:1996, Safety of machinery Safety-related parts of control systems Part 1: General principles for design EN 982:1996, Safety requirements for fluid power systems and components - Hydraulics EN 983:1996, Safety requirements for fluid power systems and components - Pneumatics EN 1088:1995, Saf
33、ety of machinery Interlocking devices with and without guard locking General principles and provisions for design EN ISO 3744:1995, Acoustics Determination of sound power levels of noise sources Engineering methods for free field conditions over a reflecting plane (ISO 3744:1994) EN ISO 4871:1996, A
34、coustics Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) EN ISO 9614-1:1995, Acoustics, Determination of sound power levels of noise sources using sound intensity Part 1: Measurement at discrete points (ISO 9614-1:1993) EN ISO 9614-2:1996, Acoustics,
35、Determination of sound power levels of noise sources using sound intensity Part 2: Measurement by scanning (ISO 9614-2:1996) EN ISO 11201:1995, Acoustics-Noise emitted by machinery and equipment - Measurement of emission sound pressure levels at the work station and at other specified positions Engi
36、neering method in an essentially free field over a reflecting plane (ISO 11201:1995) EN ISO 11204:1995, Acoustics-Noise emitted by machinery and equipment - Measurement of emission sound pressure levels at the work station and at other specified positions Method requiring environmental corrections (
37、ISO 11204:1995) !EN ISO 12100-1:2003, 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, general principles for design - Part 2: Technical principles (ISO 12100-2
38、:2003)“ EN 60204-1:1992, Safety of machinery Electrical equipment of machines Part 1: General requirements EN 60529:1991, Degrees of protection provided by enclosures (IP code) 3 Definitions For the purposes of this standard, the following definitions apply: 3.1 die face pelletiser device connected
39、directly at the end of the extruder for converting plasticised material into pellets by forcing the plasticised material, by pressure or centrifugal force, through die plates or nozzles and converting it into strands with small cross section which are then immediately cut off after emerging by cutti
40、ng knives to create pellets which are cooled and carried away by water or air. BS EN 1114-2:1998+A1:2008EN 1114-2:1998+A1:2008 (E) 6 The die face pelletiser includes essentially: Melt ducts; The diverter valve (also known as a starter valve); The pellet chamber; The drive for the knife shaft or the
41、rotor; The cutting knife supporting equipment; The water and air inlet and outlet connections for the cooling and transport medium at the pellet chamber; The diverter device for pellets; The first flange connection at the material discharge side (pellet discharge). 3.2 underwater pelletiser die face
42、 pelletiser where the discharge side of the die and the knives are mounted within the pellet chamber which is completely filled with water being circulated by an external system. 3.3 water ring pelletiser die face pelletiser where the knives operate in an air atmosphere and the hot pellets are throw
43、n into a rotating bath surrounding the die plate for cooling and conveying them away. 3.4 dry pelletiser die face pelletiser where the knives operate in an air atmosphere and the hot pellets are thrown from the pellet chamber by the motion of the knives. The severed pellets are conveyed and cooled e
44、ither by air alone or by capturing them within a water stream. The position of the cutting device can be either concentric or eccentric in relation to the die plate. 3.5 centrifugal pelletiser rotating die face pelletiser where the extrusion pressure is generated by centrifugal force within the rota
45、ting die and the extruded strands are severed into pellets by fixed knives in an air atmosphere. The pellets are thrown into the conveying and cooling system and transported onwards within an air or water stream. 3.6 knife rotor pelletiser die face pelletiser where the knife rotates on an axis perpe
46、ndicular to the axis of discharge of the die. Air flows along the cutting device. For cooling and conveying purposes water may also be added. 3.7 plasticised material liquid, paste or solid product which is ready to be processed into semi-finished products or finished products. 3.8 melt duct heated
47、pipe connecting the extruder with the die face pelletiser and carrying plasticised material. 3.9 Diverter/starter valve device positioned in the melt duct in front of the die plate or nozzles to divert plasticised material away from the die face pelletiser during start-up. 3.10 pellet chamber housin
48、g in which water and/or air is circulated for receiving, cooling and transport of pellets after cutting. BS EN 1114-2:1998+A1:2008EN 1114-2:1998+A1:2008 (E) 7 3.11 diverter device device positioned at the outlet of the die face pelletiser to divert pellets away from the transport media. 4 Hazards an
49、d Danger Zones 4.1 List of hazards 4.1.1 Mechanical hazards Mechanical hazards are: a) Crushing; b) Cutting and severing; c) Drawing in or trapping; d) Ejection of parts of the machine. These hazards are principally due to: The rotating parts of the drive and power transmission system (a, b, c); The stationary or rotating pelletising knives (a, b, c, d); The rotating d
