Bsi bs en 00536 2015

BS EN 536:2015 BSI Standards Publication Road construction machines — Mixing plants for road construction materials — Safety requirements BS EN 536:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 536:2015 It supersedes BS EN 536:1999 which is withdrawn The UK participation in its preparation was entrusted to Technical Committee B/513/1, Earth moving machinery (International) A list of organizations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 © The British Standards Institution 2015 Published by BSI Standards Limited 2015 ISBN 978 580 81774 ICS 93.080.10 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2015 Amendments issued since publication Date Text affected BS EN 536:2015 EN 536 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM August 2015 ICS 93.080.10 Supersedes EN 536:1999 English Version Road construction machines - Mixing plants for road construction materials - Safety requirements Machines pour la construction des routes - Centrales d'enrobage pour matériaux routiers - Prescriptions de sécurité Straßenbaumaschinen - Mischanlagen für Materialien zum Straßenbau - Sicherheitsanforderungen This European Standard was approved by CEN on July 2015 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 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 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref No EN 536:2015 E BS EN 536:2015 EN 536:2015 (E) Contents Page European foreword .5 Introduction Scope Normative references Terms and definitions List of significant hazards 12 5.1 5.2 5.2.1 5.2.2 5.2.3 5.3 5.3.1 5.3.2 5.3.3 5.4 5.4.1 5.4.2 5.4.3 5.4.4 5.5 5.5.1 5.5.2 5.6 5.6.1 5.6.2 5.7 5.8 5.9 5.9.1 5.9.2 5.10 5.10.1 5.10.2 5.10.3 5.10.4 5.10.5 5.10.6 5.10.7 5.10.8 5.11 5.12 5.13 5.13.1 5.13.2 5.13.3 Safety requirements and/or measures 15 General 15 Means of access 15 General 15 Mobile plants 15 Openings 16 Guards 17 General 17 Fixed guards 17 Interlocking devices and interlocking devices with guard locking 17 Electrical installation 18 General 18 Electrical cables 18 Earthing 18 Isolation for maintenance purposes 18 Pneumatic 18 General 18 Energy isolation and dissipation 18 Hydraulic 19 General 19 Isolation and energy dissipation 19 Emergency stops 19 Hot parts 19 Piping 19 General 19 Piping for hot liquids 20 Control stations 20 General 20 Main control station 20 Starting 20 Stopping 20 Restarting 21 Troubleshooting 21 Maintenance mode 21 Alarms and warnings 21 Materials sampling 21 Restricted areas 22 Lifting, tie down and transport 22 General 22 Design of attachment points for transportation purpose 22 Location of tying-down and lifting attachment points for transportation purpose 22 BS EN 536:2015 EN 536:2015 (E) 5.13.4 Identification of tying-down and lifting attachment points for transportation purpose 23 5.13.5 Other lifting attachment points for handling purpose of components or other subassemblies 23 5.14 Transportable and mobile machines - Erecting equipment 23 5.15 Equipment for storage of constituent materials 23 5.15.1 Silos 23 5.15.2 Tanks 24 5.16 Equipment for handling of constituent materials 25 5.16.1 Conveyor belts 25 5.16.2 Vibrating scalping screen 26 5.16.3 Rotating drums 26 5.16.4 Bucket elevator 28 5.16.5 Screw conveyors 29 5.16.6 Rotary valve 29 5.16.7 Manually introduced additives 29 5.16.8 Screen 29 5.16.9 Hot aggregates storage 30 5.16.10 Equipment for metering 30 5.16.11 Water steam duct 31 5.16.12 Mixer 31 5.16.13 Mixing tower exhaustion 31 5.16.14 Lifting equipment 31 5.17 Equipment for handling of mixed material 31 5.17.1 Transfer skips 31 5.17.2 Skip Hoists 32 5.17.3 Drag slat conveyor 35 5.18 Burner 35 5.19 Exhaust system 36 5.19.1 Exhaust fans 36 5.19.2 Dust collector 36 5.20 Safety signs 36 5.21 Hazard generated by noise 37 5.21.1 Noise reduction at source at the design stage 37 5.21.2 Noise reduction by protective devices 37 5.21.3 Noise reduction by information 37 Verification of safety requirements and/or measures 37 7.1 7.2 7.3 7.3.1 7.3.2 7.4 7.5 7.6 7.7 7.8 7.9 Information for use 38 General 38 Information for the foundations 38 Erection and transport instructions 39 Erection 39 Transport 39 Instructions for use 39 Information for maintenance 39 Tools and equipment 40 Spare parts and wear parts 40 Troubleshooting 40 Procedure in case of fire 40 8.1 8.2 8.3 Marking 40 Machine plate 40 Thermal heaters 41 Tanks and vessels 41 Annex A (normative) Minimum passage openings 42 A.1 Passage of the body 42 BS EN 536:2015 EN 536:2015 (E) Annex B (normative) Noise test code – Grade 43 B.1 Scope 43 B.2 Determination of A-weighted emission sound pressure levels on a contour 43 B.2.1 Measurement method 43 B.2.2 Measurement positions on the contour 43 B.2.3 Measurement procedure 44 B.3 Determination of the A-weighted emission sound pressure level at workstations 45 B.3.1 Workstations 45 B.3.2 Measurement procedure 45 B.4 Measurement uncertainty 45 B.5 Installation conditions 46 B.6 Operating conditions 46 B.7 Information to be recorded 46 B.8 Information to be reported 46 B.9 Declaration of noise emission values 46 Annex C (informative) Examples for asphalt mixing plants and terminology 48 C.1 Stationary plant 48 C.2 Transportable plant 49 C.3 Mobile plant 49 C.3.1 Mobile plant assembled 49 C.3.2 Mobile plant during transportation 50 C.4 Batch plant 50 C.5 Continuous plant 52 Annex D (normative) Movable gratings 54 D.1 General 54 D.2 Safety requirements 54 D.2.1 General 54 D.2.2 Access 54 D.2.3 Controls 54 D.2.4 Maintenance 54 Annex E (informative) Pictorials 56 E.1 Examples 56 Annex F (normative) Performance levels of the safety related parts of control system 58 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC 59 Bibliography 60 BS EN 536:2015 EN 536:2015 (E) European foreword This document (EN 536:2015) has been prepared by Technical Committee CEN/TC 151 “Construction equipment and building material machines - Safety”, the secretariat of which is held by DIN 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 February 2016, and conflicting national standards shall be withdrawn at the latest by February 2016 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 supersedes EN 536:1999 This document 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 Annex ZA, which is an integral part of this document 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, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom BS EN 536:2015 EN 536:2015 (E) Introduction This European Standard is a type C standard as stated in EN ISO 12100 The machinery concerned and the extent to which hazards are covered are indicated in the scope of this standard BS EN 536:2015 EN 536:2015 (E) Scope This European Standard specifies the safety requirements applicable to stationary and relocatable mixing plants for the production of materials (e.g hot-mix asphalt, cold-mix asphalt, cement gravel) used for the construction and maintenance of traffic routes (roads, highways, sidewalks, airfields, etc.) water retaining works, dam walls, culverts, etc This European Standard applies to the following types of mixing plant: a) hot asphalt mixing plant; b) cold mixing plant (e.g for production of cement gravel, cold mix asphalt); c) mixing plant for bituminous or non-bituminous reclaimed materials; d) mixing plant for mastic asphalt, also including natural asphalt Machines moving during the working process (e.g mobile mastic asphalt mixers) and crushers are not covered by this European Standard Those types of asphalt mixing plants can also be combined or enlarged by additional installations (e.g Plant for storage of binders (e.g bituminous, synthetic, vegetal) This European Standard deals with all significant hazards pertinent to mixing plants, when they are used as intended and under the conditions of misuse which are reasonably foreseen by the manufacturer (see Clause 4) This European Standard specifies the appropriate technical measures to eliminate or reduce risks arising from the significant hazards This European Standard does not apply to machines for the production of cement concrete and mortar as covered in EN 12151 This European Standard does not deal with hazards caused by flammable gases As soon as information is available it will be included This European Standard is not applicable to mixing plants for road construction materials, which are manufactured before the date of publication of this European Standard by CEN Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies EN 547-1:1996+A1:2008, Safety of machinery ― Human body measurements ― Part 1: Principles for determining the dimensions required for openings for whole body access into machinery EN 547-2:1996+A1:2008, Safety of machinery ― Human body measurements ― Part 2: Principles for determining the dimensions required for access openings EN 618:2002+A1:2010, Continuous handling equipment and systems ― Safety and EMC requirements for equipment for mechanical handling of bulk materials except fixed belt conveyors EN 620:2002+A1:2010, Continuous handling equipment and systems ― Safety and EMC requirements for fixed belt conveyors for bulk materials BS EN 536:2015 EN 536:2015 (E) EN 746-1:1997+A1:2009, Industrial thermoprocessing equipment ― Part 1: Common safety requirements for industrial thermoprocessing equipment EN 795:2012, Personal fall protection equipment ― Anchor devices EN 842:1996+A1:2008, Safety of machinery ― Visual danger signals ― General requirements, design and testing EN 953:1997+A1:2009, Safety of machinery ― Guards ― General requirements for the design and construction of fixed and movable guards EN 1037:1995+A1:2008, Safety of machinery ― Prevention of unexpected start-up EN 12600:2002, Glass in building ― Pendulum test ― Impact test method and classification for flat glass EN 13482:2013, Rubber hoses and hose assemblies for asphalt and bitumen ― Specification EN 60204-1:2006, Safety of machinery ― Electrical equipment of machines ― Part 1: General requirements (IEC 6204-1:2005, modified) EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) EN ISO 4413:2010, Hydraulic fluid power ― General rules and safety requirements for systems and their components (ISO 4413:2010) EN ISO 4414:2010, Pneumatic fluid power ― General rules and safety requirements for systems and their components (ISO 4414:2010) EN ISO 4871:2009, Acoustics ― Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) EN ISO 7010:2012, Graphical symbols ― Safety colours and safety signs ― Registered safety signs (ISO 7010:2011) EN ISO 7731:2008, Ergonomics ― Danger signals for public and work areas ― Auditory danger signals (ISO 7731:2003) EN ISO 11201:2010, Acoustics ― Noise emitted by machinery and equipment ― Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections (ISO 11201:2010) EN ISO 11688-1:2009, Acoustics ― Recommended practice for the design of low-noise machinery and equipment ― Part 1: Planning (ISO/TR 11688-1:1995) EN ISO 12100:2010, Safety of machinery ― General principles for design ― Risk assessment and risk reduction (ISO 12100:2010) EN ISO 13732-1:2008, 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 13849-1:2008, Safety of machinery ― Safety-related parts of control systems ― Part 1: General principles for design (ISO 13849-1:2006) EN ISO 13850:2008, Safety of machinery ― Emergency stop ― Principles 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) BS EN 536:2015 EN 536:2015 (E) Annex C (informative) Examples for asphalt mixing plants and terminology C.1 Stationary plant NOTE Designed to remain at the same working site Figure C.1 — Stationary plant 48 BS EN 536:2015 EN 536:2015 (E) C.2 Transportable plant NOTE Designed to be transported easily, e.g with container-sized parts Figure C.2 — Transportable plant C.3 Mobile plant C.3.1 Mobile plant assembled Figure C.3 — Mobile plant assembled 49 BS EN 536:2015 EN 536:2015 (E) C.3.2 Mobile plant during transportation NOTE Equipped with wheels or other tools for easy moving Figure C.4 — Mobile plant during transportation C.4 Batch plant Figure C.5 — Batch plant during process (global picture) 50 BS EN 536:2015 EN 536:2015 (E) A - Air blower B - Fuel tank Key cold feed hopper, dosing and collecting belts 4.4 oversize rejects binder storage assembly 1.1 scalping screen 4.5 aggregates weighing hopper 7.1 heated binder tank drying and heating system 2.1 drying drum conveyor 4.6 filler weighing hopper 7.2 binder pump 4.7 binder weighing hopper system for RAP addition 2.2 burner(s) 4.8 mixer dedusting system 4.9 mixing tower system 3.1 pre-separator 3.2 dust filter 3.3 with feed 8.1 RAP cold feed hopper 8.2 RAP belt conveyor mixed material storage assembly 8.3 RAP Drying drum 5.1 skip system system 8.4 burner exhaust fan 5.2 mixed material storage silos 8.5 RAP buffer hopper 3.4 stack filler distribution assembly 8.6 RAP weighing hopper mixing tower 6.1 reclaimed filler silo system for additives 4.1 hot aggregates elevator 6.2 imported filler silo 9.1 solid additives silo 4.2 screen 6.3 filler elevator 9.2 solid additives dosing devices 4.3 hot aggregates silo 6.4 filler buffer hopper 10 control cabin dust extraction and/or shuttle adding solid Figure C.6 — Batch asphalt plant (detailed picture) 51 BS EN 536:2015 EN 536:2015 (E) C.5 Continuous plant Key aggregates volumetric cold feeders 19 fines/additives transfer screw aggregates weighing cold feeders 20 fines/additives injection screw aggregates collecting belt 21 bitumen storage tanks aggregates scalping screen 22 bitumen weighing dosing unit aggregates weighing belt 23 bitumen injection piping reversible feeding conveyor 24 liquid additives dosing unit RAP weighing feeders 25 foam process water dosing unit RAP collecting belt 9a counter flow drum mixer A HMA truck loading B RAP feeders calibration 10 recycling ring C aggregates feeders calibration 11 burner D imported fines delivery 12 bag filter E binder delivery 13 exhaust fan 14 stack 15 imported fines silo 16 imported fines weighing dosing unit 17 additives hopper (Big bag) 18 additives weighing dosing unit Figure C.7 — Continuous plant – drum mixer – counter flow (global picture) 52 BS EN 536:2015 EN 536:2015 (E) Key aggregates volumetric cold feeders 19 fines/additives transfer screw aggregates weighing cold feeders 20 fines/additives injection screw aggregates collecting belt 21 bitumen storage tanks aggregates scalping screen 22 bitumen weighing dosing unit aggregates weighing belt 23 bitumen injection piping reversible feeding conveyor 24 liquid additives dosing unit RAP weighing feeders 25 foam process water dosing unit RAP collecting belt A HMA truck loading 9b parallel flow drum mixer B RAP feeders calibration 10 recycling ring C aggregates feeders calibration 11 burner D imported fines delivery 12 bag filter E binder delivery 13 exhaust fan 14 stack 15 imported fines silo 16 imported fines weighing dosing unit 17 additives hopper (Big bag) 18 additives weighing dosing unit Figure C.8 — Continuous plant - drum mixer - parallel flow (global picture) 53 BS EN 536:2015 EN 536:2015 (E) Annex D (normative) Movable gratings D.1 General This normative annex provides examples of movable gratings for cleaning measures avoiding blockages of e.g cold feeders, see Figure D.1 Figure D.1 — Example of a movable grating D.2 Safety requirements D.2.1 General rd The gratings shall comply with the requirements of 5.3.1 (3 paragraph) if they are fixed or shall comply with the following if they are movable: D.2.2 Access Access to the gratings shall be prevented by fixed rear and lateral guards according to 5.3.3 in order to avoid the hazards of crushing and of falling into the hopper when walkways are installed D.2.3 Controls Activating the movement of the gratings shall only be possible when no person is in the hazard zone There shall be direct view from the controls to the hazard zone D.2.4 Maintenance The moving system, e.g hydraulic, pneumatic, electric shall be designed to allow for isolation and energy dissipation, whether the grid is in its upper or lower position, according to EN 1037 This isolation and energy dissipation shall not hinder the plant functioning 54 BS EN 536:2015 EN 536:2015 (E) By design, the grating shall be maintained in open position and not fall in case of failure, e.g by a locking device such as a safety valve, mechanical locking device or gravity, e.g opening more than 90 ° to the closed position For vibrating foldable gratings, mechanical means (e.g chains or ropes) shall be provided to maintain the vibrating gratings in case of failure of theirs supports (e.g springs, rubber supports) 55 BS EN 536:2015 EN 536:2015 (E) Annex E (informative) Pictorials E.1 Examples To be used where fixed guards are installed around conveyors, such as cold feed feeders and collectors Hazard – Hand trapped in conveyor pinch point Avoidance – Put guards in place and disable machine before maintenance Read the manual To be used where adjustable feet are used under portable plants Hazard – Crushed foot Avoidance –Stay safe distance away from area 56 BS EN 536:2015 EN 536:2015 (E) To be used where gates are located Hazard – body trapped in gates Avoidance –Disable machine before maintenance Read the manual Follow lockout procedures 57 BS EN 536:2015 EN 536:2015 (E) Annex F (normative) Performance levels of the safety related parts of control system The required performance levels PLr according to EN ISO 13849-1 for the parts of the control system relative to the safety of the various zones of the installation shall be: Table F.1 — Performance levels Subclause Safety function Required performance levels according to EN ISO 13849-1 5.11 Devices for materials sampling b 5.15.1, 5.15.2 Monitoring of overfull silos and tanks a 5.15.2.2 Device for detection of overfull heated tanks c 5.16.3.1 Interlocking of the guards for access to the rotating drum d 5.16.3.1 Monitoring of temperature in the filter inlet of the rotating drum a 5.16.3.2 Protection device of the maintenance opening c 5.16.3.3 materials flow sensing system a 5.16.4.1 Interlocking of the guards of chain / belt and buckets c 5.16.8 Interlocking of the guards of the screens a 5.16.9 Interlocking of the guards of the storage area of hot aggregates c 5.16.10.1 Anti-overflowing device of the dosing systems b 5.16.12 Interlocking of the guards of the mixer d 5.17.2.2.2 Interlocking of the guards on the bottom of the enclosure of the bucket of the skip hoist c 5.17.2.2.4.2 Prevent movement of the bucket in intermediate safety position c 5.17.2.4.2 Stop movement of slack rope a 5.17.2.4.4 Limitation of travelling speed a 5.19.1 Interlocking of the guards of exhaust fans c 5.19.2 interlocking of the guards of dust collector c 58 BS EN 536:2015 EN 536:2015 (E) Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association to provide a means of conforming to Essential Requirements of the New Approach Directive 2006/42/EC on machinery Once this standard is cited in the Official Journal of the European Union under that Directive and has been implemented as a national standard in at least one Member State, compliance with the normative clauses of this standard confers, within the limits of the scope of this standard, a presumption of conformity with the relevant Essential Requirements of that Directive and associated EFTA regulations WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard 59 BS EN 536:2015 EN 536:2015 (E) Bibliography In this bibliography are listed standards which have a bearing on specifications of this European Standard but to which normative reference has not been made [1] EN 12195-1, Load restraining on road vehicles — Safety — Part 1: Calculation of securing forces [2] EN ISO 11688-2:2000, Acoustics — Recommended practice for the design of low-noise machinery and equipment — Part 2: Introduction to the physics of low-noise design (ISO/TR 11688-2:1998) [3] EN ISO 12499:2008, Industrial fans - Mechanical safety of fans - Guarding (ISO 12499:1999) [4] ISO 3842:2006, Road vehicles — Fifth wheels — Interchangeability [5] ISO 8716:2001, Road vehicles — Fifth wheel kingpins — Strength test 60 This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards Institution (BSI) BSI is the national body responsible for preparing British Standards and other standards-related publications, information and services BSI is incorporated by Royal Charter British Standards and other standardization products are published by BSI Standards Limited About us Revisions We bring together business, industry, government, consumers, 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