Machinery and plants for the preparation of concrete and mortar - Safety requirements

1.1   This document applies for machinery and plant for the preparation of concrete and mortar as defined in 3.1.
This document specifies the requirements for the design of:
a)   batching and mixing installations for concrete and mortar;
b)   powered mixers for concrete and mortar;
c)   waste concrete reprocessing plant.
It does not include requirements relevant to truck mixers.
The machinery may be static or it may be capable of being moved to an alternative position.
1.2   This document deals with all significant hazards, hazardous situations and events relevant to machinery and plant for the preparation of concrete and mortar, when they are used as intended and under the conditions foreseen by the manufacturer (see Clause 4). The exceptions are explosion hazards when using flammable or explosive materials that are significant but not dealt with. This document specifies the appropriate technical measures to eliminate or reduce risks arising from the significant hazards. Maintenance is dealt with but not noise during maintenance.
1.3   This document is not applicable to machinery and plant which are manufactured before the date of publication of this document by CEN.

Maschinen und Anlagen zur Bereitung von Beton und Mörtel - Sicherheitsanforderungen

1.1   Dieses Dokument gilt für Maschinen und Anlagen zur Bereitung von Beton und Mörtel, wie in 3.1 definiert.
Dieses Dokument legt die Anforderungen für die Konstruktion von
a)   Dosier- und Mischanlagen für Beton und Mörtel;
b)   kraftbetriebenen Mischern für Beton und Mörtel einschließlich Lagerung und Handhabung;
c)   Restfrischbetonaufbereitungsanlagen
fest.
Es enthält keine Anforderungen für Fahrmischer.
Die Maschinen dürfen ortsfest oder ortsveränderlich sein.
1.2   Dieses Dokument behandelt alle signifikanten Gefährdungen, Gefährdungssituationen und Gefährdungsereignisse, die auf Maschinen und Anlagen zur Bereitung von Beton und Mörtel zutreffen, wenn sie bestimmungsgemäß und entsprechend den vorhersehbaren Bedingungen des Herstellers verwendet werden (siehe Abschnitt 4). Ausgenommen sind Gefährdungen durch Explosionen bei der Verwendung von brennbaren oder explosiven Materialien, die signifikant sind, aber nicht behandelt werden. Dieses Dokument spezifiziert die angemessenen technischen Maßnahmen zur Beseitigung oder Verminderung der Risiken, die von den signifikanten Gefährdungen ausgehen. Instandhaltung wird behandelt, Lärm während der Instandhaltung jedoch nicht.
1.3   Dieses Dokument gilt nicht für Maschinen und Anlagen, die hergestellt wurden, bevor CEN dieses Dokument veröffentlichte.

Machines et centrales pour la préparation du béton et du mortier - Prescriptions de sécurité

La présente norme spécifie les prescriptions pour: 1.1.1 Les installations de dosage et de mélange pour le béton et le mortier; 1.1.2 Les malaxeurs à moteurs pour le béton et le mortier; 1.1.3 Les installations de retraitement des déchets de béton. Les machines peuvent être statiques ou elles peuvent pouvoir être déplacées vers une autre position. Par exploitation des machines, on doit comprendre l'installation, le fonctionnement, les essais, le travail de maintenance et le nettoyage.

Stroji in oprema za pripravo betona in malte - Varnostne zahteve

General Information

Status
Published
Publication Date
18-Dec-2008
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
15-Dec-2008
Due Date
19-Feb-2009
Completion Date
19-Dec-2008

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Stroji in oprema za pripravo betona in malte - Varnostne zahteveMaschinen und Anlagen zur Bereitung von Beton und Mörtel - SicherheitsanforderungenMachines et centrales pour la préparation du béton et du mortier - Prescriptions de sécuritéMachinery and plants for the preparation of concrete and mortar - Safety requirements91.220Gradbena opremaConstruction equipmentICS:Ta slovenski standard je istoveten z:EN 12151:2007SIST EN 12151:2009en01-februar-2009SIST EN 12151:2009SLOVENSKI

STANDARD
SIST EN 12151:2009

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12151November 2007ICS 91.220 English VersionMachinery and plants for the preparation of concrete and mortar- Safety requirementsMachines et centrales pour la préparation du béton et dumortier - Prescriptions de sécuritéMaschinen und Anlagen zur Bereitung von Beton undMörtel - SicherheitsanforderungenThis European Standard was approved by CEN on 13 October 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial 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, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12151:2007: ESIST EN 12151:2009

EN 12151:2007 (E) 2 Contents Page Foreword......................................................................................................................................................................5 Introduction.................................................................................................................................................................6 1 Scope..............................................................................................................................................................7 2 Normative references....................................................................................................................................7 3 Terms and definitions...................................................................................................................................9 4 List of significant hazards..........................................................................................................................12 5 Safety requirements and/or protective measures....................................................................................14 5.1 Common requirements for all groups of machines.................................................................................14 5.1.1 High pressure fluid injection hazard from hydraulic or pneumatic systems........................................14 5.1.2 Electrical hazards........................................................................................................................................14 5.1.3 Main switches and control panels.............................................................................................................14 5.1.4 Emergency stop...........................................................................................................................................15 5.1.5 Thermal hazard............................................................................................................................................15 5.1.6 Hazard generated by noise.........................................................................................................................15 5.1.7 Ergonomic design........................................................................................................................................15 5.1.8 Weather conditions......................................................................................................................................15 5.1.9 Permanent means of access......................................................................................................................15 5.1.10 Fire protection..............................................................................................................................................16 5.1.11 Assembly......................................................................................................................................................16 5.1.12 Electrical Magnetic Compatibility (EMC) of machines.............................................................................16 5.1.13 Further requirements..................................................................................................................................16 5.2 Specific requirements relating to different types of machines...............................................................16 5.2.1 General..........................................................................................................................................................16 5.2.2 Small mobile tipping drum mixers for domestic and industrial use (see Annex B).............................16 5.2.3 All other mixers, e.g. tipping drum mixers (stationary), trough-, pan-, through-flow mixers (see Annex B).......................................................................................................................................................20 5.2.4 Ground tipping systems (see Annex B)....................................................................................................24 5.2.5 Radial scrapers and radius lift arms (see Figures B.2 to B.6)................................................................25 5.2.6 Skip hoist system (see Figure B.8)............................................................................................................26 5.2.7 Dosing equipment (see Figure B.9 in Annex B).......................................................................................28 5.2.8 Aggregate distribution chute (see Figure B.10).......................................................................................30 5.2.9 Mobile mixing plant (see figure B.13 in Annex B)....................................................................................31 5.2.10 Waste concrete reprocessing plant (see Figures B.20, B.21 and B.22).................................................31 6 Verification of safety requirements and/or protective measures...........................................................32 7 Information for use......................................................................................................................................33 7.1 Instruction handbook..................................................................................................................................33 7.1.1 General..........................................................................................................................................................33 7.1.2 Small mobile tipping drum mixers for domestic and industrial use......................................................33 7.1.3 All other mixers, e.g. tipping drum mixers (stationary), trough mixers, pan mixers, through-flow mixers...................................................................................................................................................34 7.1.4 Ground tipping systems.............................................................................................................................34 7.1.5 Scraper radius, bridge and dragline plant................................................................................................34 7.1.6 Skip hoists....................................................................................................................................................35 7.1.7 Dosing equipment........................................................................................................................................35 7.1.8 Aggregate distribution chute......................................................................................................................35 7.1.9 Mobile mixing plant.....................................................................................................................................35 7.1.10 Waste concrete reprocessing plant...........................................................................................................35 7.1.11 Information of machine marking, see 7.2..................................................................................................36 SIST EN 12151:2009

EN 12151:2007 (E) 3 7.2 Marking.........................................................................................................................................................36 7.2.1 General..........................................................................................................................................................36 7.2.2 Specifically for hydraulic and pneumatic systems..................................................................................36 7.2.3 Specifically for electrical equipment.........................................................................................................37 7.2.4 Specifically for internal combustion engine.............................................................................................37 7.2.5 Specifically for control stations, working platforms, accesses and lifting equipment........................37 7.2.6 Mixer with an electrical class II motor.......................................................................................................37 7.2.7 Underground buffer stock area..................................................................................................................37 Annex A (normative)

Stability, ground surface, headroom and access requirements.....................................38 A.1 Ground surface and headroom of operation areas..................................................................................38 A.2 General access............................................................................................................................................38 A.3 Stability test of small mobile tipping drum mixers..................................................................................39 Annex B (informative)

Illustration of mixer and plants.........................................................................................40 Annex C (normative)

Noise test code.....................................................................................................................60 C.1 Scope............................................................................................................................................................60 C.2 Sound power level determination..............................................................................................................60 C.2.1 Mixers............................................................................................................................................................60 C.2.2 Plants............................................................................................................................................................61 C.3 Emission sound pressure level determination.........................................................................................62 C.3.1 Mixers............................................................................................................................................................62 C.3.2 Plants............................................................................................................................................................62 C.4 Installation conditions.................................................................................................................................62 C.5 Operating conditions...................................................................................................................................62 C.6 Information to be recorded.........................................................................................................................63 C.7 Information to be reported..........................................................................................................................63 C.8 Declaration of noise emission values.......................................................................................................63 Annex ZA (informative)

Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC.............................................................................................................................64 Annex ZB (informative)

Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC.........................................................................................................................65 Bibliography..............................................................................................................................................................66

SIST EN 12151:2009

EN 12151:2007 (E) 4 Figures Figure A.1 — Tipping drum mixer (plan view)............................................................................................................39 Figure A.2 — Tipping drum mixer (side view).............................................................................................................39 Figure B.1 — Small mobile tipping drum mixer..........................................................................................................40 Figure B.2 — Example of a dragline scraper and a star plant....................................................................................41 Figure B.3 — Example of a scraper radius plant (front view).....................................................................................42 Figure B.4 — Protection walls and safety barrier for plant with one radius lift arm....................................................43 Figure B.5 — Protection walls and safety barrier for plant with one or more radius lift arm(s)..................................44 Figure B.6 — Radius lift arm with buckets..................................................................................................................45 Figure B.7 — Example of a ground tipping hopper....................................................................................................46 Figure B.8 — Example of a skip hoist system............................................................................................................47 Figure B.9 — Dosing equipment of a batching plant..................................................................................................48 Figure B.10 — Aggregate distribution system (e.g. distribution shoot)......................................................................49 Figure B.11 — Example of concrete production plant with the plant featuring in-line hopper aggregate storage equipment............................................................................................................................................................50 Figure B.12 — Example of a vertical mixing plant fed by conveyor belt or bucket elevator.......................................51 Figure B.13 — Example of a mobile mixing...............................................................................................................52 Figure B.14 — Tipping drum mixer.............................................................................................................................52 Figure B.15 — Chute discharge mixer........................................................................................................................53 Figure B.16 — Reversing drum mixer........................................................................................................................53 Figure B.17 —Trough mixer.......................................................................................................................................54 Figure B.18 — Stationary pan with concentrically placed rotating paddles................................................................55 Figure B.19 — Example of a through-flow mixer........................................................................................................56 Figure B.20 — Waste concrete reprocessing plant (above ground)..........................................................................57 Figure B.21 — Waste concrete reprocessing plant (plant partly underground).........................................................58 Figure B.22 — Waste concrete reprocessing plant....................................................................................................59 Figure B.23 — Dimensions of outlet hopper of through-flow mixers..........................................................................59 Figure C.1 — Microphone array on the hemisphere (12 microphone positions)........................................................61

SIST EN 12151:2009

EN 12151:2007 (E) 5 Foreword This document (EN 12151:2007) 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 May 2008, and conflicting national standards shall be withdrawn at the latest by May 2008. 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 and Annex ZB, which are 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, 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, Sweden, Switzerland and United Kingdom. SIST EN 12151:2009

EN 12151:2007 (E) 6 Introduction This document is a type C standard as stated in EN ISO 12100-1:2003. 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 this 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. The road traffic law for each country remains unaffected by this standard. SIST EN 12151:2009

EN 12151:2007 (E) 7

1 Scope 1.1 This document applies for machinery and plants for the preparation of concrete and mortar as defined in 3.1. This document specifies the requirements for the design of: a) batching and mixing installations for concrete and mortar; b) powered mixers for concrete and mortar, including for storage and handling; c) waste fresh concrete reprocessing plant. It does not include requirements relevant to truck mixers. The machinery may be static or it may be capable of being moved to an alternative position. 1.2 This document deals with all significant hazards, hazardous situations and events relevant to machinery and plant for the preparation of concrete and mortar, when they are used as intended and under the conditions foreseen by the manufacturer (see Clause 4). The exceptions are explosion hazards when using flammable or explosive materials that are significant but not dealt with. This document specifies the appropriate technical measures to eliminate or reduce risks arising from the significant hazards. Maintenance is dealt with but not noise during maintenance. 1.3 This document is not applicable to machinery and plants which are manufactured before the date of publication of this document by CEN. 2 Normative references The following referenced documents 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. EN 294:1992, Safety of machinery — Safety distances to prevent danger zones being reached by the upper limbs EN 349:1993, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body EN 360:2002, Personal protective equipment against falls from a height — Retractable type fall arresters EN 361:2002, Personal protective equipment against falls from a height — Full body harnesses EN 363:2002, Personal protective equipment against falls from a height — Fall arrest systems EN 547-1:1996, 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, Safety of machinery — Human body measurements — Part 2: Principles for determining the dimensions required for access openings EN 547-3:1996, Safety of machinery — Human body measurements — Part 3: Anthropometric data EN 574:1996, Safety of machinery — Two-hand control devices — Functional aspects — Principles for design EN 614-1:2006, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles EN 617:2001, Continuous handling equipment and systems — Safety and EMC requirements for the equipment for the storage of bulk materials in silos, bunkers, bins and hoppers SIST EN 12151:2009

EN 12151:2007 (E) 8 EN 618:2002, Continuous handling equipment and systems — Safety and EMC requirements for equipment for mechanical handling of bulk materials except fixed belt conveyors EN 620:2002, Continuous handling equipment and systems — Safety and EMC requirements for fixed belt conveyors for bulk materials EN 795:1996, Protection against falls from a height — Anchor devices — Requirements and testing EN 811:1996, Safety of machinery — Safety distances to prevent danger zones being reached by the lower limbs EN 894-1:1997, Safety of machinery — Ergonomic requirements for the design of displays and control actuators — Part 1: General principles for human interactions with displays and control actuators EN 894-2:1997, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 2: Displays EN 953:1997, Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards EN 954-1:1996, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design EN 982:1996, Safety of machinery — Safety requirements for fluid power systems and their components — Hydraulics EN 983:1996, Safety of machinery — Safety requirements for fluid power systems and their components — Pneumatics EN 999:1998, Safety of machinery — The positioning of protective equipment in respect of approach speeds of parts of the human body EN 1050:1996, Safety of machinery — Principles for risk assessment EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principles for design and selection EN 12198-1:2000, Safety of machinery — Assessment and reduction of risks arising from radiation emitted by machinery — Part 1: General principles EN 13309:2000, Construction machinery — Electromagnetic compatibility of machines with internal electrical power supply EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements (IEC 60204-1:2005, modified) EN 60204-32:1998, Safety of machinery — Electrical equipment of machines — Part 32: Requirements for hoisting machines (IEC 60204-32:1998) EN 60335-1:2002, Household and similar electrical appliances — Safety — Part 1: General requirements (IEC 60335-1:2001, modified) EN 60335-2-69:2003, Household and similar electrical appliances — Safety — Part 2-69: Particular requirements for wet and dry vacuum cleaners, including power brush, for industrial and commercial use (IEC 60335-2-69:2002, modified) EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) EN 62262:1995, Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK Code) SIST EN 12151:2009

EN 12151:2007 (E) 9 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 ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) EN ISO 11201:1995, Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions — Engineering method in an essentially free field over a reflecting plane (ISO 11201:1995) EN ISO 11688-1:1998, 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 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical principles (ISO 12100-2:2003) EN ISO 13732-1:2006, 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 13850:2006, Safety of machinery — Emergency stop — Principles for design (ISO 13850:2006) EN ISO 14122-1:2001, Safety of machinery — Permanent means of access to machinery — Part 1: Choice of fixed means of access between two 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 14122-3:2001, Safety of machinery — Permanent means of access to machinery — Part 3: Stairs, stepladders and guard-rails (ISO 14122-3:2001) ISO 3795:1989, Road vehicles, and tractors and machinery for agriculture and forestry — Determination of burning behaviour of interior materials ISO 7000:2004, Graphical symbols for use on equipment — Index and synopsis IEC 60364-4-41:2005, Low-voltage electrical installations — Part 4-41: Protection for safety — Protection against electric shock (IEC 60364-4- 41:2005, modified) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 12100-1:2003 and the following apply. NOTE Schematic figures of the different types of machinery and plant are shown in Annex B. 3.1 machinery and plant for the preparation of concrete and mortar collection of equipment including those used for storage, conveying, batching, dosing, mixing and discharging 3.2 batching plant equipment which prepares all necessary raw materials using dosing equipment (see Figures B.3, B.9 and B.12) SIST EN 12151:2009

EN 12151:2007 (E) 10 3.3 mixing plant equipment, where the necessary raw materials are mixed with or without the addition of water or additives (see Figures B.3 and B.12) 3.4 proportioning equipment device used to proportion constituents of the mix by means of valves, gates, weighers and volumetric mechanisms (see Figure B.12, Key numbers 3, 4 and 5) 3.5 mobile mixing plant installation which may be transported by road or may be on site and involves all the components required for mixing and batching (see Figure B.13) 3.6 mixer machine used to prepare concrete and mortar. It may be operated intermittently or constantly 3.6.1 gravity mixer mixer where the materials are mixed and emptied using gravity (see Figures B.1, B.2, B.14, B.15, B.16 and B.17) 3.6.2 tipping drum mixer mixer where the mixing drum axle can tilt (see Figure B.14) 3.6.3 small mobile tipping drum mixer mixer which can be moved from one place to another on the construction site by hand and without mechanical assistances (see Figures B.1) 3.6.4 chute discharge mixer mixer which is emptied using a chute, preventing the need to tilt the drum (see Figure B.15) 3.6.5 reversing drum mixer mixer which is emptied using an internal screw system and reversing the drum (see Figure B.16) 3.6.6 trough mixer mixer which may be loaded from the top and have a single or double shaft to achieve the mixing action within a static trough. The trough may be discharged by doors in the underside or by tilting (see Figure B.17) 3.6.7 pan mixer mixer which may have a fixed or rotating pan

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