1、BRITISH STANDARD BS EN 12012-2:2001 Rubber and plastics machines Size reduction machines Part 2: Safety requirements for strand pelletisers ICS 83.200 +A2:2008BS EN 12012-2:2001 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2001 B
2、SI 2009 National foreword 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 amendment A1 is indicated by !“. The UK participation in its prep
3、aration was entrusted by Technical Committee MCE/3, Safeguarding of machinery, to Subcommittee MCE/3/2, Rubber and plastics machines Safety. A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the neces
4、sary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication Amd. No. Date Comments 15013 4 March 2004 +A2:2008 Implementation of CEN amendment A1:200
5、3 31 May 2009 Implementation of CEN amendment A2:2008 ISBN 978 0 580 61056 1 This British Standard is the UK implementation of EN 12012-2:2001+A2:2008. It supersedes BS EN 12012-2:2001, including amendment A1:2003, which is withdrawn. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12012-2:2001
6、+A2 September 2008 ICS 83.200 Supersedes EN 12012-2:2001 English Version Plastics and rubber machines - Size reduction machines - Part 2: Safety requirements for strand pelletisers Machines pour les matires plastiques et le caoutchouc - Machines fragmenter - Partie 2: Prescriptions de scurit relativ
7、es aux granulateurs joncs Kunststoff- und Gummimaschinen - Zerkleinerungsmaschinen - Teil 2: Sicherheitsanforderungen an Stranggranulatoren This European Standard was approved by CEN on 10 May 2001 and includes Amendment 1 approved by CEN on 14 November 2003 and Amendment 2 approved by CEN on 8 June
8、 2008. 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 may be obtain
9、ed on application to the CEN 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 to the CEN Manageme
10、nt Centre has the same status as the official versions. CEN 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
11、, 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: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form
12、and by any means reserved worldwide for CEN national Members. Ref. No. EN 12012-2:2001+A2:2008: EEN 12012-2:2001+A2:2008 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 4 2 Normative references 4 3 Terms and definitions .6 4 List of significant hazards 9 5 Safety requirements and/or protective
13、 measures10 6 Verification of conformity with the safety requirements and/or protective measures.14 7 Information for use 15 Annex A (normative) Measurement and declaration of noise emission values .17 Annex ZA (informative) # # # #Relationship between this European Standard and the Essential Requir
14、ements of EU Directive 98/37/EC$ $ $ $.21 Annex ZB (informative) # # # #Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC$ $ $ $.22 BS EN 12012-2:2001+A2:2008 EN 12012-2:2001+A2:2008 (E) 3 Foreword This document (EN 12012-2:2001+A2:2008) has been p
15、repared by Technical Committee CEN/TC 145 “Plastics and rubber machines“, the secretariat of which is held by UNI. 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 natio
16、nal standards shall be withdrawn at the latest by December 2009. This document includes Amendment 1 approved by CEN on 2003-11-14 and Amendment 2 approved by CEN on 2008-06-08. The main changes compared to Amendment 1 are: modification of the main element of the title. editorial modification of Anne
17、x 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 clauses and sub-clauses: 2, 5, Table 1, 7.1.1, Annex A, A.3.1. minor changes of Foreword, sub-clause: 7.2, second and third indents, Annex A, A.7, third
18、 indent. This document supersedes EN 12012-2:2001. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“ and # $. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, an
19、d supports essential requirements of EU Directive(s). #For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document.$ This is the second in a series of standards on the safety of size reduction machines. Part 1 deals with blade granulators; Part
20、 3 deals with shredders. Annex A is normative. 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germ
21、any, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 12012-2:2001+A2:2008 EN 12012-2:2001+A2:2008 (E) 4 Introduction This document is a type C stan
22、dard as stated in EN 1070. The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this document. When provisions of this type C standard are different from those which are stated in type A or B standards, the provisions of t
23、his type C standard take precedence over the provisions of the other standards, for machines that have been designed and built according to the provisions of this type C standard. 1 Scope !This standard specifies the essential safety requirements applicable to the design and construction of strand p
24、elletisers used for plastics and rubber and fed continuously by an extruder or a reactor. The machine begins with the feed opening of the feeding device, or start-up devices if fitted, and ends with the discharge area. Only the significant hazards listed in clause 4 and dealt with in clause 5 are su
25、bject to this standard. NOTE Directive 94/9/EC concerning equipment and protective systems intended for use in potentially explosive atmospheres can be applicable to the type of machine or equipment covered by this European Standard. The present standard is not intended to provide means of complying
26、 with the essential health and safety requirements of Directive 94/9/EC. This standard applies to machines which are manufactured after the date of approval of this standard by CEN.“ 2 Normative references This European standard incorporates by dated or undated reference, provisions from other publi
27、cations. These normative references are cited 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 amendment or revision
28、. For undated references the latest edition of the publication referred to applies (including amendments). #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, function
29、al aspects - Principles for design EN 563:1994, Safety of Machinery - Temperatures of touchable surfaces - Ergonomics data to establish temperature limit values for hot surfaces EN 953:1997, Safety of Machinery Guards - General requirements for the design and construction of fixed and movable guards
30、 EN 954-1:1996, Safety of Machinery - Safety related parts of control systems - Part 1: General principles for design BS EN 12012-2:2001+A2:2008 EN 12012-2:2001+A2:2008 (E) 5 EN 1037:1995, Safety of machinery - Prevention of unexpected start-up EN 1070, Safety of machinery - Terminology EN 1088:1995
31、, Safety of Machinery - Interlocking devices associated with guards Principles for design and selection EN 50014, Electrical apparatus for potentially explosive atmospheres General requirements EN 50015, Electrical apparatus for potentially explosive atmospheres - Oil-immersion “o“ EN 50016, Electri
32、cal apparatus for potentially explosive atmospheres - Pressurised apparatus “p“ EN 50017, Electrical apparatus for potentially explosive atmospheres - Powder filling “q“ EN 50018, Electrical apparatus for potentially explosive atmospheres - Flameproof enclosures “d“ EN 50019, Electrical apparatus fo
33、r potentially explosive atmospheres - Increased safety “e“ EN 50020, Electrical apparatus for potentially explosive atmospheres - Intrinsic safety “i“ EN 60204-1:1997, Safety of Machinery - Electrical equipment of machines - Part 1: General requirements (IEC 60204-1:1997) EN 60529:1991, Degrees of p
34、rotection provided by enclosures (IP Code) (IEC 60529:1989) EN ISO 3741:1999, Acoustics -Determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms (ISO 3741:1999) EN ISO 3743-1:1995, Acoustics - Determination of sound power levels of noise
35、sources - Engineering methods for small, movable sources in reverberant fields - Part 1: Comparison method for hard-walled test rooms (ISO 3743-1:1994) EN ISO 3743-2:1996, Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering methods for small, movable s
36、ources in reverberant fields - Part 2: Methods for special reverberation test rooms (ISO 3743-2:1994) EN ISO 3744:1995, Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994) EN I
37、SO 3746:1995, Acoustics - Determination of sound power levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane (ISO 3746:1995) EN ISO 3747:2000, Acoustics - Determination of sound power levels of noise sources using sound pressure
38、comparison method for use in-situ (ISO 3747:2000) EN ISO 4871:1996, Acoustics - 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: Measur
39、ement at discrete points (ISO 9614-1:1993) EN ISO 9614-2:1996, Acoustics - 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
40、sound pressure levels at the work station and at other specified positions - Engineering method in an essentially free field over a reflecting plane (ISO 11201:1995) BS EN 12012-2:2001+A2:2008 EN 12012-2:2001+A2:2008 (E) 6 EN ISO 11202:1995, Acoustics - Noise emitted by machinery and equipment - Mea
41、surement of emission sound pressure levels at the work station and at other specified positions - Survey method in situ (ISO 11202:1995) EN ISO 11203:1995, Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at the work station and at other specifie
42、d positions from the sound power level (ISO 11203:1995) 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 (ISO 11204:1995) EN ISO 11
43、688-1:1998, Acoustics - Recommended practice for the design of low-noise machinery and equipment - Part 1: Planning (ISO/TR 11688-1:1995) #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 121
44、00-2:2003, Safety of machinery - Basic concepts, general principles for design - Part 2: Technical principles (ISO 12100-2:2003)$ ISO 3745:1977, Acoustics - Determination of sound power levels of noise sources - Precision methods for anechoic and semi-anechoic rooms 3 Terms and definitions For the p
45、urposes of this document, the terms and definitions given in EN 1070 and the following terms and definitions apply: 3.1 strand pelletiser a machine which cuts extruded strands into regular pellets within a cutting chamber. Pellet size regulation is achieved by synchronising the rotating speed of cut
46、ting rotor and feeding rolls 3.2 cutting chamber the part of the machine where the cutting/reduction of the material takes place 3.3 rotor a rotating cutting device with regularly spaced blades around the periphery 3.4 stationary cutting blade a blade fixed inside the cutting chamber 3.5 start-up de
47、vice a device, peculiar to some installations, positioned upstream of the feeding area, which guides the material strands from the start-up position to the operating position 3.6 feeding device the part of the machine used for feeding the material into the feeding area. The feeding device can be mov
48、able, e.g. conveyor belt or roller(s) or fixed, e.g. chute or plate BS EN 12012-2:2001+A2:2008 EN 12012-2:2001+A2:2008 (E) 7 3.7 feeding area the area of the machine where the feeding rolls are installed 3.8 discharge area the area where the pellets leave the cutting chamber 3.9 cooling system a sys
49、tem using water or air, which reduces the temperature of material to the appropriate level for the cutting process 3.10 working level the surface on which the person who feeds the machine stands Key 1 Cutting chamber 6 Feeding rolls 2 Rotor 7 Feeding area 3 Rotor blade 8 Discharge area 4 Stationary cutting blade 9 Strands 5 Feeding device Figure 1 Example of a strand pelletiser BS EN 12012-2:2001+A2:2008 EN 12012-2:2001+A2:2008 (E) 8 Key 1 Cutting chamber 6 Feeding area 2 Roto
