SIST EN 536:2015
(Main)Road construction machines - Mixing plants for road construction materials - Safety requirements
Road construction machines - Mixing plants for road construction materials - Safety requirements
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.
Straßenbaumaschinen - Mischanlagen für Materialien zum Straßenbau - Sicherheitsanforderungen
Diese Europäische Norm legt Sicherheitsanforderungen für stationäre und mobile Mischanlagen zur Produktion von Materialien (z. B. Heißasphalt, Kaltasphalt, verfestigter Kies) für den Bau und die Instand-haltung von Verkehrswegen (Straßen, Autobahnen, Fußwege, Flugplätze usw.), Wasserspeicherbecken, Dämmen, Abzugkanäle usw. fest.
Diese Sicherheitsnorm gilt für die folgenden Arten von Mischanlagen:
a) Heißasphaltmischanlage;
b) Kaltmischanlagen (z. B. für die Herstellung von verfestigtem Kies, Kaltasphalt);
c) Mischanlagen für bituminöse oder nicht bituminöse aufgearbeitete Materialien;
d) Mischanlagen für Gussasphalt, einschließlich Naturasphaltmischgut.
Maschinen, die sich während des Arbeitsganges fortbewegen (z. B. ortsveränderliche Gussasphaltmischer) sowie Brecher werden in der vorliegenden Norm nicht behandelt.
Diese Arten von Asphaltmischanlagen können mit weiteren Anlagen kombiniert oder durch sie erweitert werden, z. B. mit Anlagen zur Lagerung von Bindemitteln (z. B. bituminöse, synthetische, pflanzliche).
Diese Europäische Norm behandelt alle signifikanten Gefährdungen, die auf Mischanlagen zutreffen, wenn sie bestimmungsgemäß und unter den durch den Hersteller vernünftigerweise vorhersehbaren Fehl¬anwendungen verwendet werden (siehe Abschnitt 4). Diese Europäische Norm legt die entsprechenden technischen Maßnahmen zur Beseitigung oder Verringerung der Risiken fest, die von den signifikanten Gefährdungen ausgehen.
Diese Europäische Norm gilt nicht für Maschinen zur Verarbeitung und Herstellung von Beton und Mörtel nach EN 12151.
Diese Europäische Norm behandelt keine Gefährdungen, die von dem Umgang mit brennbaren Gasen ausgehen. Sobald entsprechende fachliche Kenntnisse vorhanden sind, werden sie in diese Norm eingearbeitet.
Diese Europäische Norm gilt hauptsächlich für Maschinen, die nach dem Datum der Zustimmung durch CEN zu dieser Norm hergestellt wurden.
Machines pour la construction des routes - Centrales d'enrobage pour matériaux routiers - Prescriptions de sécurité
La présente Norme européenne spécifie les prescriptions de sécurité applicables aux centrales de malaxage stationnaires et déplaçables, destinées à la production de matériaux (par exemple, enrobés à chaud, enrobés à froid, grave-ciment) utilisés pour la construction et l’entretien des voies de circulation (routes, autoroutes, trottoirs, pistes d’aéroports, etc.), des ouvrages de retenue d’eau, des murs des barrages, des ponceaux, etc.
La présente Norme européenne s’applique aux types de centrales de malaxage suivants :
a) centrales d’enrobage aux liants hydrocarbonés chauds ;
b) centrales de malaxage pour matériaux traités à froid (par exemple, pour la production de grave-ciment, d’enrobés à froid) ;
c) centrales de malaxage pour matériaux bitumineux et non bitumineux recyclés ;
d) centrales de malaxage de bitume synthétique, incluant également la fabrication d’asphalte naturel.
Les machines mobiles pendant le processus de production (par exemple, pétrins à bitume synthétique mobiles) et les concasseurs ne sont pas couverts par la présente Norme européenne.
Les types de centrales de production de mélanges bitumineux couverts peuvent également être combinés à ou complétés par des installations supplémentaires (par exemple, un parc de stockage des liants, notamment des liants bitumineux, synthétiques ou végétaux).
La présente Norme européenne traite tous les phénomènes dangereux significatifs relatifs aux centrales de malaxage, lorsque celles-ci sont utilisées normalement et dans les conditions de mauvais usage raisonnablement prévisibles par le fabricant (voir l’Article 4). Elle spécifie les mesures techniques appropriées pour éliminer ou réduire les risques liés aux phénomènes dangereux significatifs.
La présente Norme européenne ne s’applique pas aux machines de production de béton de ciment et de mortier couvertes par l’EN 12151.
La présente Norme européenne ne traite pas des phénomènes dangereux engendrés par les gaz inflammables. Dès que des informations seront disponibles sur le sujet, elles seront intégrées à cette norme.
La présente Norme européenne n’est pas applicable aux centrales d’enrobage pour matériaux routiers fabriquées avant la date de publication de ce document par le CEN.
Stroji za gradnjo cest - Oprema za mešanje materialov za gradnjo cest - Varnostne zahteve
Ta evropski standard določa varnostne zahteve za stacionarno in premično opremo za mešanje za izdelavo materialov (npr. vroča asfaltna masa, hladna asfaltna masa, cement–gramoz), ki se uporabljajo za gradnjo in vzdrževanje prometnih poti (cest, avtocest, pločnikov, letališč itd), struktur za zadrževanje vode, sten jezov, kanalov itd.
Ta evropski standard se uporablja za naslednje vrste opreme za mešanje materialov:
a) oprema za mešanje vročega asfalta;
b) oprema za mešanje hladnega materiala (npr. za mešanico cement–gramoz, hladen asfalt);
c) oprema za mešanje bitumenskih in nebitumenskih ponovno uporabljenih materialov;
d) oprema za mešanje litega asfalta, vključno z naravnim asfaltom.
Stroji, ki se premikajo med delovnim postopkom (npr. premična oprema za mešanje litega asfalta) in drobilci niso del tega evropskega standarda.
Te tipe opreme za mešanje asfalta je mogoče združiti ali povečati z dodatnimi namestitvami (npr. obrat za shranjevanje veziv, npr. bitumenskih, sintetičnih, rastlinskih).
Ta evropski standard opisuje vsa večja tveganja, povezana z opremo za mešanje, kadar se ta uporablja v skladu s svojim namenom in pod pogoji pričakovane nepravilne uporabe, ki jih določa proizvajalec (glej točko 4). Ta evropski standard določa ustrezne tehnične ukrepe za odpravljanje ali zmanjšanje tveganj, ki nastanejo pri resnih nevarnostih.
Ta evropski standard se ne uporablja za stroje za izdelavo cementnega betona in malte, kot je to opredeljeno v standardu EN 12151.
Ta evropski standard ne obravnava tveganj zaradi vnetljivih plinov. Informacije bodo vključene takoj, ko bodo na voljo.
Ta evropski standard se ne uporablja za obrate za mešanje materialov za gradnjo cest, izdelane pred izdajo tega evropskega standarda s strani CEN.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2015
1DGRPHãþD
SIST EN 536:2000
Stroji za gradnjo cest - Oprema za mešanje materialov za gradnjo cest - Varnostne
zahteve
Road construction machines - Mixing plants for road construction materials - Safety
requirements
Straßenbaumaschinen - Mischanlagen für Materialien zum Straßenbau -
Sicherheitsanforderungen
Machines pour la construction des routes - Centrales d'enrobage pour matériaux routiers
- Prescriptions de sécurité
Ta slovenski standard je istoveten z: EN 536:2015
ICS:
91.220 Gradbena oprema Construction equipment
93.080.10 Gradnja cest Road construction
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 536
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 Straßenbaumaschinen - Mischanlagen für Materialien zum
d'enrobage pour matériaux routiers - Prescriptions de Straßenbau - Sicherheitsanforderungen
sécurité
This European Standard was approved by CEN on 3 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 Ref. No. EN 536:2015 E
worldwide for CEN national Members.
Contents Page
European 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 measures . 15
5.1 General . 15
5.2 Means of access . 15
5.2.1 General . 15
5.2.2 Mobile plants . 15
5.2.3 Openings . 16
5.3 Guards . 17
5.3.1 General . 17
5.3.2 Fixed guards . 17
5.3.3 Interlocking devices and interlocking devices with guard locking . 17
5.4 Electrical installation . 18
5.4.1 General . 18
5.4.2 Electrical cables . 18
5.4.3 Earthing . 18
5.4.4 Isolation for maintenance purposes . 18
5.5 Pneumatic . 18
5.5.1 General . 18
5.5.2 Energy isolation and dissipation . 18
5.6 Hydraulic . 19
5.6.1 General . 19
5.6.2 Isolation and energy dissipation . 19
5.7 Emergency stops . 19
5.8 Hot parts . 19
5.9 Piping . 19
5.9.1 General . 19
5.9.2 Piping for hot liquids . 20
5.10 Control stations . 20
5.10.1 General . 20
5.10.2 Main control station . 20
5.10.3 Starting . 20
5.10.4 Stopping . 20
5.10.5 Restarting . 21
5.10.6 Troubleshooting . 21
5.10.7 Maintenance mode. 21
5.10.8 Alarms and warnings . 21
5.11 Materials sampling. 21
5.12 Restricted areas . 22
5.13 Lifting, tie down and transport . 22
5.13.1 General . 22
5.13.2 Design of attachment points for transportation purpose . 22
5.13.3 Location of tying-down and lifting attachment points for transportation purpose . 22
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 sub-
assemblies . 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
6 Verification of safety requirements and/or measures . 37
7 Information for use . 38
7.1 General . 38
7.2 Information for the foundations . 38
7.3 Erection and transport instructions . 39
7.3.1 Erection . 39
7.3.2 Transport . 39
7.4 Instructions for use . 39
7.5 Information for maintenance . 39
7.6 Tools and equipment . 40
7.7 Spare parts and wear parts . 40
7.8 Troubleshooting . 40
7.9 Procedure in case of fire. 40
8 Marking . 40
8.1 Machine plate . 40
8.2 Thermal heaters . 41
8.3 Tanks and vessels . 41
Annex A (normative) Minimum passage openings . 42
A.1 Passage of the body . 42
Annex B (normative) Noise test code – Grade 2 . 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
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.
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.
1 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.
2 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
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)
EN ISO 14119:2013, Safety of machinery ― Interlocking devices associated with guards ― Principles for
design and selection (ISO 14119:2013)
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)
EN ISO 14122-4:2004, Safety of machinery ― Permanent means of access to machinery ― Part 4: Fixed
ladders (ISO 14122-4:2004)
ISO 3864-1:2011, Graphical symbols — Safety colours and safety signs — Part 1: Design principles for safety
signs and safety markings
ISO 3864-2:2004, Graphical symbols — Safety colours and safety signs — Part 2: Design principles for
product safety labels
ISO 3864-3:2012, Graphical symbols — Safety colours and safety signs — Part 3: Design principles for
graphical symbols for use in safety signs
ISO 6405-1:2004, Earth-moving machinery ― Symbols for operator controls and other displays ― Part 1:
Common symbols
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the following
apply.
3.1
mixing plant
complex installation of machines and functionally connected, performing a combination of the following
functions (depending on the type of the plant) for example:
— storage and charging of aggregates and reclaimed materials;
— dosing of aggregates and reclaimed materials;
— scalping of cold aggregates and reclaimed materials;
— drying and heating of aggregates and if applicable reclaimed materials;
— screening;
— removal of dust from the gases emitted from the dryer;
— reintroduction of reclaimed fines;
— storage and dosing of imported fines;
— introduction of imported fines;
— storage and dosing of hot hydrocarbon binders;
— storage and dosing of cold hydraulic or hydrocarbon binders;
— storage and dosing of the hot aggregates and reclaimed materials;
— storage and dosing of other products (e.g. liquid additives, solid additives powder, fibres, bags);
— mixing of the constituents to obtain a homogeneous material;
— transfer of the final mix to storage and discharging of the final mix;
— storage and use of fuels
3.1.1
hot asphalt mixing plant
plant for the production of hot mix asphalt (containing e.g. aggregates, filler, binder (e.g. bitumen), additives)
Note 1 to entry: During the process the aggregates are heated (e.g. drum dryer).
Note 2 to entry: Other materials can be heated, e.g. binder, additives.
3.1.2
cold mixing plant
plant for the production of cold mix asphalt or cold mixes with hydraulic binders (containing e.g. aggregates,
filler, binder (e.g. bitumen emulsion, cement), additives, water)
Note 1 to entry: During the process the aggregates are not heated.
Note 2 to entry: Other materials can be heated, e.g. binder, additives.
3.2
stationary plant
fixed plant which is not being moved during operation and not designed to be moved (e.g. installed on
permanent foundations)
3.3
relocatable plant
3.3.1
transportable plant
plant which is not being moved during operation, but which is designed in such a way as to enable it to be
transported from one place to another (e.g. with lifting points, telescopic legs to be picked up, sized to be
transported in a standard container)
Note 1 to entry: The transportable plant can be disassembled to be transported easily (e.g. in components).
3.3.2
mobile plant
plant which is not being moved during operation, but which is mainly equipped with wheels for transportation
by towing as to enable it to be moved easily from one place to another
Note 1 to entry: Components of the mobile plant can be disassembled to be moved easily and transported separately.
3.4
batch plant
asphalt mixing plant in which the material dosing and mixing operations are undertaken by successive
batches in a mixer
3.5
continuous plant
asphalt mixing plant in which the material dosing and the mixing operations are undertaken by continuous
equipment and handling systems which does not interrupt the material flow
3.6
mastic asphalt plant
plant, similar to hot mix asphalt plant (see 3.1.1), for the production of mastic asphalt (produced by a very rich
mix of bitumen and filler)
Note 1 to entry: This plant can be equipped with heaters for the filler and also storage silos equipped with heaters and
mixers (e.g. stirrers).
Note 2 to entry: Usual processing temperatures of mastic asphalt are higher than used for hot mix asphalt.
3.7
workstation/main control station
combination of energy supply, control cabinet/s and controls for operating the plant, including monitoring of
the main parameters of the production process and warning signals
Note 1 to entry: It specifically contains:
— Indicators of operational parameters;
— display screens;
— tools to dialogue with the automation;
— possibly a flow diagram;
— control units to switch to manual operation (safety);
— a means to visually monitor the asphalt mix loading into collection vehicles (e.g. dump-haul truck).
3.8
skip hoist
equipment composed of a bucket generally trailed by one (or more) cable(s) and guided along its path by a
system of inclined or vertical rails
Note 1 to entry: The bucket transports, by an automatic cycle, a volume of materials of defined maximum density, from
a fixed bottom loading point to one or more high fixed discharge points.
3.9
equipment for storage
any type of silo, hopper or tank capable of holding materials
3.9.1
silo
permanent storage unit for granular material and powders (e.g. reclaimed fines, hot mixed asphalt)
Note 1 to entry: The silo is usually charged from the top and discharged from one or more outlets at the bottom or
side.
3.9.2
tank
storage unit of fluids (e.g. hydrocarbon or synthetic binders, gases)
3.9.3
hopper
temporary storage unit with usually funnel-shaped section towards the bottom. It is used to channel solids
towards a gravity discharge outlet during the process
Note 1 to entry: The hopper is usual emptied at the end of the process.
3.10
reclaimed asphalt pavements (RAP) drum dryer
equipment used to dry and heat reclaimed asphalt pavements
3.11
passage opening
opening (e.g. door, manhole) which allows the movement or the entry of a person's entire body
3.12
access opening
opening through which a person can lean forward, reach forward, or extend the upper body, head, arm, hand,
a finger or several fingers, leg or foot
3.13
visual inspection opening
opening, where due to design or size only visual inspections are possible
3.14
interlocking device [interlock]
mechanical, electrical or other type of device, the purpose of which is to prevent the operation of machine
elements under specified conditions (generally as long as a guard is not closed)
3.15
movable guard
guard which can be opened without the use of tools
3.16
fixed guard
guard affixed in such a manner (e.g. by screws, nuts, welding) that it can only be opened or removed by the
use of tools (e.g. key, spanner) or destruction of the affixing means
3.17
troubleshooting
act of methodically determining the reason that the plant, or portions of the plant, has failed to perform the
task or function as intended
3.18
transfer skip
equipment composed of a bucket generally moved either by one (or more) cable(s) or driven axles, and
guided along its path by a system of horizontal rails
Note 1 to entry: The bucket transports, by an automatic cycle, a volume of materials of defined maximum density from
a fixed loading point to one or more fixed discharge points.
4 List of significant hazards
This clause contains all significant hazards, hazardous situations and events, identified by risk assessments
significant for this type of machinery and which require action to eliminate or reduce risk.
Table 1 — List of significant hazards
No. Hazards Locations/circumstances Safety requirements
and/or measures,
reference in Clause
1 Burying — in hoppers for delivery or storage by treated 5.3.1, 5.3.2, 5.3.3
or untreated materials
1.1 Crushing — when erecting machines; 5.14
— in the operating area of skips 5.3.2, 5.17.1, 5.17.2
1.2 Cutting or severing — with moving elements of the machines, e.g. 5.16.2
— screw conveyors; 5.16.5
— with the hopper discharge doors 5.12, 5.15.2.3
1.3 Drawing-in or trapping — in the support rollers of rotating drums; 5.3.2
— on belt conveyors; 5.16.1
— on ventilator fans; 5.16.3.1, 5.19.1
— on bucket elevators and slat conveyors; 5.16.4
— with the moving parts of mixers 5.16.3.3
1.4 High pressure fluid — flexible piping under hydraulic pressure; hot 5.3.3, 5.6, 5.9
injection and flammable fluids in the circuits of thermal
oil systems and bitumen distribution systems
1.5 Ejection of — on the material sampling systems 5.2.3.3, 5.11
parts/materials
1.6 Loss of stability — insufficient supporting capability of the
5.13
foundations;
5.13, 7.2
— erection of transportable machines
1.7 Falling — into hoppers, silos and tanks; 5.2, 5.2.3.1
— from walkways or access platforms; 5.16.1, 5.17.2.2, Annex D
Slipping — on walkways or access platforms 5.16.1, 5.17.2.2
1.8 Falling of — on walkways, working areas or access 5.12
parts/materials platforms
2 Electrical hazards
2.1 Electrical contact — power circuit 5.4
(direct or indirect)
3 Thermal hazards
3.1 Burns from contact or — the heating equipment of dryers, drum mixers 5.8
radiation and recycling drums and the equipment for
5.8
heating binders;
5.6, 5.8
— screens, storage hoppers, mixers, weighting
5.8, 5.9.2, 5.15.2
hoppers;
— piping - especially flexible connections - and,
in particular, those carrying hot products
(thermal oil, hydrocarbon binders);
— overflow from bitumen tanks
No. Hazards Locations/circumstances Safety requirements
and/or measures,
reference in Clause
3.2 Harmful effects by hot — maintenance of the drum dryers and mixing 5.16.3.1, 5.16.3.5
environment drums;
5.12, 5.16.8, 5.16.9
— changing the screen meshes;
5.15.2.1, 5.19.2
— maintenance on bag filters;
5.7, 5.16.12, 5.16.13
— inside the mixing towers
4 Hazards generated
by materials and
products
(maintenance)
4.1 Contact with or Maintenance work: 5.12, 5.16.8
inhalation of harmful
— in housings for screens and bag filters (5.9); 5.16.7
dusts
— during the manufacture of special products
incorporating harmful additives (5.13)
4.2 Fire or explosion — in drums as well as in dust filters; 5.19.2
— in the storage tanks for fluid bitumen and in 5.15.2.2
thermal oil heaters
5.15.2.1
— fuel storage tank (oil tank, gas tank, coal dust
silo)
5 Hazards generated
by neglecting
ergonomic principles
5.1 Defective posture — in control cabins (position of the consoles, 5.10.1, 5.10.2
poor viewing position of the terminals)
5.2 Inadequate lighting at — poor layout of the control cabin in relation to 7.5
the control station natural and artificial lighting
5.3 Mental — design of control stations 5.10
overload/underload
5.4 Effort — handling, size and weight of the spare parts 5.13
are not in accordance with ergonomic
principles
6 Hazards generated by
failure of power supply
and other malfunctions
6.1 Failure in (electrical, — automatic closure of the delivery gates on 5.4.2, 5.7
pneumatic and bins and material storage hoppers
hydraulic) energy
supply
6.2 Unexpected loss of — particularly for transportable machines when 5.14
machinery stability, being erected and set-up during assembly
overturning
7 Hazards generated
by lack or incorrect
positioning of safety
devices
7.1 Loading and unloading — sampling on operational machinery for 5.11, 5.13
facilities production control
No. Hazards Locations/circumstances Safety requirements
and/or measures,
reference in Clause
7.2 Essential accessories — lifting tackle for handling heavy and awkward 5.13
for safety during spare parts (e.g. for elevators, screens,
maintenance mixers) if these machines are positioned at a
higher level
8 Noise hazards 5.21
5 Safety requirements and/or measures
5.1 General
Machinery shall comply with the safety requirements and all protective measures of this clause.
In addition, the machine shall be designed according to the principles of EN ISO 12100 for hazards relevant
but not significant which are not dealt with by this European Standard.
The required performance levels (PLr) of safety related functions of control systems shall be in accordance
with EN ISO 13849-1.
For all safety related functions of con
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