EN 1248:2001+A1:2009

Foundry machinery - Safety requirements for abrasive blasting equipment

This standard specifies requirements to be met by the manufacturer of abrasive blasting equipment for the foreseeable significant hazards due to design, construction and installation, during commissioning, operation, maintenance and decommissioning of the equipment which employ either centrifugal force or compressed air as a means of accelerating abrasive to achieve the desired result.
Abrasive blasting equipment covers:
-   centrifugal blasting machines;
-   air blasting machines;
-   loading, conveying and unloading systems for the workpieces.
See Annex A for more details.
This standard covers all foreseeable significant hazards which could be encountered during the lifetime of the machine as listed in clause 5.
This standard does not apply to:
-   mobile centrifugal blasting equipment;
-   mobile air blasting equipment;
-   wet blasting equipment;
-   the general works compressed air supply system.

Gießereimaschinen - Sicherheitsanforderungen für Strahlanlagen

Diese Norm beschreibt die vom Hersteller von Strahlanlagen zu beachtenden Anforderungen für die vorhersehbaren
signifikanten Gefährdungen aufgrund Konstruktion, Errichtung und Einbau, bei Inbetriebnahme,
Betrieb, Wartung und Außerbetriebnahme der Anlagen, die entweder Zentrifugalkraft oder Druckluft als
Hilfsmittel zur Beschleunigung des Strahlmittels nutzen, um das gewünschte Ergebnis zu erreichen.
Strahlanlagen umfassen:
⎯ Schleuderstrahlmaschinen;
⎯ Druckluftstrahlmaschinen;
⎯ Belade-, Transport- und Entladesysteme für die zu strahlenden Teile.
Für weitere Einzelheiten siehe Anhang A.
Diese Norm erfasst alle vorhersehbaren signifikanten Gefährdungen, die im Verlauf der Lebensdauer der
Maschine auftreten können, wie im Abschnitt 5 aufgeführt.
Diese Norm gilt nicht für:
⎯ mobile Schleuderstrahlgeräte;
⎯ mobile Druckluftstrahlgeräte;
⎯ Nass-Strahlgeräte;
⎯ das allgemeine Druckluftzufuhrsystem für das Werk.

Machines de fonderie - Prescriptions de sécurité pour équipements de grenaillage

La présente norme spécifie les prescriptions, auxquelles le fabricant doit satisfaire, relatives aux phénomènes
dangereux significatifs prévisibles dus à la conception, à la construction et à l'installation, à la mise en service,
au fonctionnement, à la maintenance et à la mise hors service des équipements qui utilisent la force centrifuge ou
l'air comprimé comme moyen d'accélérer la grenaille pour obtenir le résultat désiré.
Les équipements de grenaillage couvrent :
- les machines de grenaillage à turbine ;
- les machines de grenaillage à air comprimé ;
- les systèmes de chargement, d'acheminement et de déchargement pour les pièces à traiter.
Pour plus de détails, voir l'annexe A.
La présente norme couvre tous les phénomènes dangereux significatifs prévisibles qui peuvent être rencontrés
pendant la durée de vie de la machine, tels qu'indiqués à l'article 5.
La présente norme ne s'applique pas aux :
- équipements mobiles de grenaillage à turbine ;
- équipements mobiles de grenaillage à air comprimé ;
- procédés de grenaillage humide ;
- le système général de production d'air comprimé.

Livarski stroji - Varnostne zahteve za opremo za peskanje

General Information

• Status: Withdrawn
• Publication Date: 07-Apr-2009
• Withdrawal Date: 13-Apr-2025
• ICS: 25.120.30 - Moulding equipment
• Technical Committee: CEN/TC 202 - Foundry machinery
• Drafting Committee: CEN/TC 202/WG 4 - Blasting
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 12-Feb-2025
• Completion Date: 14-Apr-2025
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Directive: 98/37/EC - Machinery
• Mandate: M/079 - Mandate to CEN and CENELEC for standardization in the field of machines
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: SIST EN 1248:2002+A1:2009 - Foundry machinery - Safety requirements for abrasive blasting equipment

Relations

• Merged From: EN 1248:2001/prA1 - Foundry machinery - Safety requirements for abrasive blasting equipment
• Effective Date: 18-Jan-2023
• Merged From: EN 1248:2001 - Foundry Machinery - Safety requirements for abrasive blasting equipment
• Effective Date: 11-Feb-2009
• Replaced By: EN ISO 23779:2025 - Shot blasting machinery - Safety and environmental requirements (ISO 23779:2024)
• Effective Date: 18-Jan-2023

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Livarski stroji - Varnostne zahteve za opremo za peskanjeGießereimaschinen - Sicherheitsanforderungen für StrahlanlagenMachines de fonderie - Prescriptions de sécurité pour équipements de grenaillageFoundry machinery - Safety requirements for abrasive blasting equipment25.120.30Livarska opremaMoulding equipmentICS:Ta slovenski standard je istoveten z:EN 1248:2001+A1:2009SIST EN 1248:2002+A1:2009en01-junij-2009SIST EN 1248:2002+A1:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1248:2001+A1
April 2009 ICS 25.120.30 Supersedes EN 1248:2001English Version
Foundry machinery - Safety requirements for abrasive blasting equipment
Machines de fonderie - Prescriptions de sécurité pour équipements de grenaillage
Gießereimaschinen - Sicherheitsanforderungen für Strahlanlagen This European Standard was approved by CEN on 8 March 2001 and includes Amendment 1 approved by CEN on 1 March 2009.
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 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1248:2001+A1:2009: ESIST EN 1248:2002+A1:2009

Description of equipment covered by this standard. 28Annex B (informative)
Illustrative solutions for safety measures of blasting equipment . 29Annex ZA (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC" . 37Annex ZB (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" . 38Bibliography . 39
Figures Figure B.1 — Processing scheme with abrasive blasting media preparation (see 3.2)" . 29Figure B.2 — Shot blast wheel cover safety device (see 5.2) . 30Figure B.3 — Shot blast wheel cover safety device (see 5.2) . 31Figure B.4 — Safety measures against the propelling of abrasive blasting media (see 5.3.1.2) . 32Figure B.5 — Blasting chamber door (see 5.3.1.3 and 5.3.1.5) . 33Figure B.6 — Door locking (see 5.3.1.3) . 34Figure B.7 — Safety catch of loading flap (see 5.6.1) . 35Figure B.8 — Fixed guard (see 5.7.1) . 36SIST EN 1248:2002+A1:2009

Tables !Table 1 — Significant hazards, hazardous situations, safety requirements and/or measures" . 11
(IEC 60079-0:2004, modified) EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements (IEC 60204-1:2005, modified) EN 60529, Degrees of protection provided by enclosures (IP-Code) (IEC 60529:1989) EN 61310-1, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual, auditory and tactile signals (IEC 61310-1:2007) EN 61310-2, Safety of machinery — Indication, marking and actuation — Part 2: Requirements for marking (IEC 61310- 2:2007) EN ISO 7731, Ergonomics — Danger signals for public and work areas — Auditory danger signals
(ISO 7731:2003) EN ISO 10218-1, Robots for industrial environments — Safety requirements — Part 1: Robot
(ISO 10218-1:2006) SIST EN 1248:2002+A1:2009

a) The safety features which shall be incorporated into the equipment; b) Any special instructions which shall be communicated to the user. !deleted text" 5 Safety requirements and/or measures 5.1 !General 5.1.1 Machinery shall comply with the safety requirements and/or protective measures formulated in Table 1 in relation with the different significant hazards. In addition, the machine shall be designed according to the principles of EN ISO 12100-2 for relevant but not significant hazards which are not dealt with by this document. 5.1.2 When selecting the adequate safety measures the manufacturer shall apply the following principles in the given order: 1) elimination or minimisation of risks by integration of the safety concept into the design of the machine; 2) establishment of adequate safety measures against remaining risks (e.g. guard scaffolding, light barriers); 3) instruction to personnel concerning the remaining risks (e.g. service manuals, danger signs). When more than one measure is necessary to safeguard a hazard then all the necessary measures shall be used. When selecting the safety requirements and/or measures consideration shall be given to the different hazards that may appear at the same time. Warning signs alone are not sufficient in cases of significant risk. 5.1.3 Where access is into a working area is by guards/doors the safety related parts of the electro-mechanical/electronic control system shall be in accordance with at least performance level PL=d with use of category 3 according to EN ISO 13849-1:2006. The hydraulic and pneumatic systems shall be in accordance with at least performance level PL=c with use of category 1 according to
EN ISO 13849-1:2006. 5.1.4 Where it is possible to gain access to a hazardous area which is not protected by a movable guard or door, access shall be prevented by fixed guards in accordance with EN ISO 13857, EN 953 and EN 1088. 5.1.5 Emergency stop equipment shall be in accordance with EN ISO 13850 (where applicable, for determination of stop categories see Table 1). 5.1.6 The following Table 1 is developed to allow the designer and manufacturer of the equipment to apply a logical approach for checking the design against the list of significant hazards with respect to abrasive blasting equipment. Table 1 is structured as follows:  column 1 identifies the significant hazards;  column 2 describes the hazardous situations;  column 3 specifies the safety requirements and/or measures to avoid or minimize the hazards and hazardous situations;  column 4 identifies the verification methods to be used to demonstrate conformity; the abbreviations V, P, M and D are defined as follows: SIST EN 1248:2002+A1:2009

5.4.1 of EN 1088:1995/A1:2007 connected with stop category 1 according 4.1.4 of EN ISO 13850:2006. An interlocking guard with guard locking shall be fitted to prevent the wheel starting unless the blasting chamber doors are closed and to prevent the doors being opened until the wheels have come to a complete stop. V, D
It shall not be possible to open the door(s) until the abrasive media flow had been shut off. Either a) the wheels shall have come to a complete stop; or b) the wheel hood covers shall be in closed position. V
The start up of the wheels or the opening movement of the wheel hood covers shall only be possible after the doors are closed
4.11 of EN ISO 12100-2:2003 and EN 1037 (Design control system to prevent unexpected start-up/restart).
5.3.1.2 Impact, abrasive media attack
Ejection of blasting abrasive media at entry and exit points of machines. Clause 4 of EN ISO 12100-2:2003 (Risk reduction by design). The abrasive material shall be prevented from escaping from the blasting chamber e.g. by the use of labyrinth of curtains, compressed air (see Annex B, Figure B.4). It is not possible to give precise details of the preventative measures because of the nature of the abrasive media and the size/shape of the workpiece to be blasted. 6.4 c of EN ISO 12100-2:2003 (Manufacturer shall specify the use of eye protection), see 7.4.2. V 5.3.1.3
Crushing, impact, abrasive media attack Persons being trapped inside the blasting chamber at the start of the operating cycle e.g. – in the case of blasting chambers permitting the entry of personnel where full access is possible from the surrounding floor areas or platforms without further means (e.g. ladders) for the purposes of inspection, – cleaning, removal of dropped workpieces, – trouble-shooting, – simultaneous maintenance by operator or maintenance people. Interlocking devices which prevent start-up shall be fitted, e.g. removable handles, electronic locks. V In addition devices shall be fitted which allow escape of persons from inside the accessible chamber (see Annex B, Figures B.5 and B.6), e.g. – doors openable from inside the chamber, – illuminated emergency stop device inside the chamber positioned by each door (EN ISO 12100-2:2003, 5.5.2). V, P Warning signs (EN 61310-1) stating "Do not enter the blasting chamber unless the machine is isolated". V 5.3.1.4
Abrasive media attack Alternative use of centrifugal blasting machines for air blasting, unexpected start of centrifugal blasting wheel during air blasting.3.25.4 of EN ISO 12100-1:2003 and EN 1088. An interlock between the wheel drive and air blasting system (e.g. a key system) shall be fitted to prevent rotation of the centrifugal wheel during manual air blasting. V, P 5.3.1.5
Crushing impact Movement of power-driven doors when opening and shutting. Crushing between door and frame or structure. Use one or more of the following measures as appropriate: – 5.3.2.6 of EN ISO 12100-2:2003 (Construction of edges, see Annex B, Figure B.5), – 3.26.5/3.26.6 of EN ISO 12100-1:2003 (Trip devices), – 3.26.3 of EN ISO 12100-1:2003 (Hold-to-run control devices, for doors visible from the control panel), V
EN 349 (Safety distances).
The operating manual shall provide instructions to avoid danger points due to machine positioning and instruction for floor marking.
Reference shall be made in the instruction handbook that the hooks shall be replaced when limits of hook wear have been reached. The instruction handbook shall state the limit of the permissible hook wear. Building up of the hook by welding is prohibited.
Rotary drum falling out of blasting machine. Mechanical safety device, e.g. restraint rolls in the rolling area (such rolls shall be designed to accommodate the mass of the rotary drum and its designed load or capacity and to withstand the weight of the drum and its payload). D, V 5.3.1.8 Slip, trip Slip, trip within a walk-in blasting chamber permitting the entry of personnel for inspection, cleaning, maintenance or trouble-shooting. Install anti-slip floorplates or grids inside the chamber
(for apertures see EN ISO 13857). V 5.3.2 Blasting chamber of air blasting machines 5.3.2.1 Abrasive media attack (environment and persons coming from outside) Start of the blasting process if doors are opened or opening of doors during blasting. 3.25.4 of EN ISO 12100-1:2003 and EN 1088 (Interlocked door). Design to ensure that blasting cannot be initiated until the doors are closed. Opening of a door shall stop the blasting process. V, D 5.3.2.2 Crushing, impact, abrasive media attack Persons being trapped inside the blasting chamber at the start of the operating cycle e.g. – in the case of blasting chambers permitting the entry of personnel where full access is possible from the surrounding floor areas or platforms without further means (e.g. ladders) for the purposes of inspection, – cleaning, removal of dropped workpieces, – trouble-shooting, – simultaneous maintenance by operator or maintenance people. Interlocking devices which prevent start-up shall be fitted, e.g. removable handles, key system, electronic locks (see also 5.9). V In addition devices shall be fitted which allow escape of persons from inside the accessible chamber, e.g. – doors openable from inside the chamber, – illuminated emergency stop device inside the chamber positioned by each door (EN ISO 12100-2:2003, 5.5.2). V, P Warning signs (EN 61310-1) stating "Do not enter the blasting chamber unless the machine is isolated". V SIST EN 1248:2002+A1:2009

EN 349 (Safety distances)
The operating manual shall provide instructions to avoid danger points due to machine positioning and instruction for floor marking.
5.3.2.4 Crushing and shearing Unexpected closing of doors under gravity. 3.26.7 of EN ISO 12100-1:2003 Devices to prevent the doors falling from the open position such as – self actuated mechanical restraint devices with direct effect on the door or
– check valves or control valves that are directly attached to the working cylinders and that lock closed automatically in the event of pressure loss shall meet EN 982. V 5.3.2.5 Slip, trip Slip, trip within a walk-in blasting chamber permitting the entry of personnel for inspection, cleaning, maintenance or trouble-shooting. Install anti-slip floorplates or grids inside the chamber
For apertures see EN ISO 13857. V 5.3.3 Wheel blasting machine intermittently used for manual air blasting (additional requirements to 5.3.1 and 5.3.2) 5.3.3.1 Abrasive media attack Alternative use of centrifugal blasting machines for air blasting, unexpected start of centrifugal blasting wheel during air blasting.3.25.4 of EN ISO 12100-1:2003 Wheel drive and air blasting interlock device to prevent a start of the centrifugal wheel movement during manual air blasting (see EN 1088). V, D
Free jet work inside the blasting chamber. Uncontrolled movement of the nozzle and/or release of abrasive media if the hand held device is released. 3.25.4 of EN ISO 12100-1:2003 and EN 1088 (interlocked door). 3.26.3 of EN ISO 12100-1:2003 (Provision of hold-to-run nozzle control device with a maximum overrun time of 1 s). V, M 5.3.3.2 Restriction of communication Free jet work inside the blasting chamber. Provision of communication means such as "Viewing window". V, D SIST EN 1248:2002+A1:2009

– belt conveyor;
– vibrating or scraper conveyor; – hopper; 3.25.1 of EN ISO 12100-1:2003 (e.g. fixed floorplates to walk on). Safety distances according to EN 349. Apertures according to EN ISO 13857. V
– bucket elevator; – hopper discharge conveyor. In addition for bucket elevators: 3.26.7 of EN ISO 12100-1:2003 and EN 953 (Fit anti-run back device to prevent return movement of single side loaded elevator). V 5.4.2 Entanglement Access to exposed shaft ends. 3.25.1 of EN ISO 12100-1:2003 and EN 953
(Fit fixed guard). V 5.4.3 Impact/crash (due to inadequacy of mechanical strength) Disintegration and flying off of pressurised parts of the air blasting equipment. Designed to EN 286-1.
NOTE Other EC Directives may apply to this equipment, e.g. pressure vessels 87/404/EEC (as amended by 90/488/EEC), pressure equipment 97/23/EC. V, D 5.5 Abrasive media and contaminants cleaning, separation and storage device 5.5.1 Cutting or severing Access to
– abrasive media transfer screw conveyor;
– rotating screens or drums; 3.25.1 of EN ISO 12100-1:2003 and EN 953 (Fit fixed guard e.g. cover plate). V
– powered abrasive media feed valves. 3.25.1 of EN ISO 12100-1:2003 and EN 953 (Fit fixed covering).
5.5.2 Entanglement Access to exposed shaft ends. 3.25.1 of EN ISO 12100-1:2003 and EN 953 (Fit fixed guard). V 5.5.3 Electrostatic phenomena Any parts subject to electrostatic charge (parts which have a specific resistance of more than 106 Ωm or parts which have a specific resistance of less than 104 Ωm but a resistance to earth of more than 106 Ω) such as hoses, linings, nozzles, holding devices for workpieces, dust collection hoppers. Adequate earthing of conductive parts and the use of anti-static material for abrasive media blasting hoses (see EN ISO 3861 and CENELEC R044-001, February 1999). V, M 5.6 Power and driving devices 5.6.1 Crushing, shearing, cutting Unexpected movements of conveying equipment for the blasted material due to failure of components of electronic control system and unprogrammed orders to control valves or electric drives. 4.11 of EN ISO 12100-2:2003 and EN 1037 and 5.4, 9.4.3, 11.3 and 18 of EN 60204-1:2006. D
Unexpected movements due to return of motive energy after previous drop or failure of energy.4.11.4 of EN ISO 12100-2:2003 (Re-start after power interruption). D, P SIST EN 1248:2002+A1:2009

Unexpected movement due to drop of failure of hydraulic or pneumatic pressure. 4.10 of EN ISO 12100-2:2003 (Pneumatic (EN 982) or hydraulic (EN 983) equipment, see Annex B, Figure B.7). V, D 5.7 Loading and unloading systems for workpieces 5.7.1 Crushing, shearing, cutting Vibrating conveyors Access to movement area for vibrating conveyor provided with lateral movement and/or moving parts.
EN 1088 (Fit interlocking guard, see Annex B, Figure B.8).
Ensure safety distances are in accordance with EN 349. V
Rubber/apron/roller/wire conveyors
Access to driving system e.g. driving, guide and tension rollers and confluence in areas where the direction is changed. 3.25.1 of EN ISO 12100-1:2003 and EN 953 (Fixed guard) and EN 620. V
Access to charging and discharging zone and where the conveyor changes from horizontal to angular direction. 3.25.1 of EN ISO 12100-1:2003, EN ISO 13857 and EN 953. Prevent access to the moving components at the charging and discharging positions by using fixed guards. V
Workpieces falling off at the end of conveyor. 3.25.1 of EN ISO 12100-1:2003, EN ISO 13857 and EN 953. Prevent access to the moving components at the charging and discharging positions by using fixed guards. V
Barrel/trough/slat/belt conveyors
Access by personnel to loading and discharging area. 3.25.1 of EN ISO 12100-1:2003, EN ISO 13857 and EN 953. Prevent access to the moving components at the charging and discharging positions by using fixed guards or 3.26.5 of EN ISO 12100-1:2003 (Trip devices: pedal-operated switch connected with stop category 1 according 4.1.4 of EN ISO 13850:2006). V
Power driven rotating table, transfer car
Access to car wheels. Hooded car wheels. V
Residual movement without power when drive is de-energised. Position locking devices shall be provided or mechanical brake device in direct connection with the wheel or a brake motor if it is shaft mounted. V
Remotely controlled or automatically controlled movement creating danger of collision, approaching to or moving close to, under or above adjacent equipment or building structures. EN 349
Safety distances
3.25.1 of EN ISO 12100-1:2003, EN ISO 13857 and EN 953. Prevent access to the moving components at the charging and discharging positions by using fixed guards. 3.26.5 of EN ISO 12100-1:2003 (trip devices). Performance of trip device shall be in accordance with EN 999.
Manually controlled movement. Where a hold-to-run control device (3.26.3 of EN ISO 12100-1:2003) is used it shall be positioned clear off falling workpieces with operators full view to the dangerous movement. V
Falling of workpieces when the car or table is travelling and causing an obstruction to movement. 6.1 of EN ISO 12100-2:2003. Fit emergency stopping device located e.g. on the car or table. V
Manual assisted loading and unloading
Monorail: Access to movement area where there is not a safety distance between fixed and moving parts.
Emergency stopping device at the fixed parts (trip device according 10.7.2 of
EN 60204-1:2006).
V
Other conveyors in blasting machines (belt conveyor, rollers etc.):
Access to driving system. 3.25.1 of EN ISO 12100-1:2003, EN ISO 13857 and EN 953. Prevent access to the moving components at the charging and discharging positions by using fixed guards
and EN 620. V
Robot/manipulator
Access to movement area, while robot/manipulator is being set or running. Safety measures according to EN ISO 10218-1. V 5.7.2 Crushing, shearing, cutting and falling of workpieces Mechanical/hydraulic skip
Access to skip movement area. 3.25.4 of EN ISO 12100-1:2003. Fit fixed guard that prevents access to the skip movement area and 3.25.4 of
EN ISO 12100-1:2003.
V, P, D
Where access is required for loading and unloading fit interlocking guard (EN 953) or trip device (e.g. photo-electric or pressure sensitive device) or
3.26.3 and 3.26.5 of EN ISO 12100-1:2003 for the loading area and where hold-to-run control device is used it shall be positioned clear off falling workpiece with complete visibility of the access between machine and skip.
Uncontrolled movement of skip due to failure of driving system. Mechanical skip: 3.26.7 of EN ISO 12100-1:2003 (Restraining system with self actuated mechanical interlocking device).
V Hydraulic skip: 4.10 of EN ISO 12100-2:2003 (Control valve).
D SIST EN 1248:2002+A1:2009
Warning label (see 7.2), containing information such as "No access within operating area to unauthorised personnel when working on maintenance or trouble shooting in this area. Ensure that skip is in the down position and in a 'zero energy state'; where this is not possible the skip shall be supported by a mechanical prop." (see 5.5.4 of EN ISO 12100-2:2003 and EN 1037). V 5.7.3 Entanglement into the machine Hand loaded machines Access to barrel, trough, slat, belt conveyor in manual loading operations.
Emergency stopping device operated by a trip device either hand, knee, foot actuated or trip wire according 10.7.2 of EN 60204-1:2006.
V 5.7.4 Crushing Overhead conveyors Falling of workpieces due to overloading.
6.5 of EN ISO 12100-2:2003 (Written instructions regarding overloading).
V
Falling of workpieces caused by abrasive wear of load hooks. Design the hook with a safety factor of four to allow abrasive wear. V, D
Reference shall be made in the instruction handbook that the hooks shall be replaced when limits of hook wear have been reached. The operating manual shall state the limit of the permissible hook wear. Building up of the hook by welding is prohibited.
Access to continuous travelling overhead conveyor. 3.25.1 of EN ISO 12100-1:2003, EN ISO 13857 and EN 953. Prevent access by using fixed guards; exception for loading and unloading areas. V
Access to area under intermittently travelling conveyor. 5.5.2 of EN ISO 12100-2:2003 (Hand control and emergency stopping device positioned near the loading and unloading areas). 5.4 of EN ISO 12100-1:2003 and EN ISO 12100-2:2003 (Warning device). V
Hook rotation in loading/unloading station. 3.26.3 of EN ISO 12100-1:2003. Hold-to-run control device positioned at loading and unloading point. V 5.7.5 Physical strain Bad working postures. Consideration of ergonomic principles (see EN 614-1). V SIST EN 1248:2002+A1:2009

– general, 6.2.2, 6.2.5, 6.3.2, 6.3.3 and 6.4 of
EN 60204-1:2006 shall be applied. Warning signs (see 16.2 of EN 60204-1:2006) shall be provided at casings/enclosures which – have no supply disconnecting/ isolating device, – are not a control station, – are not a single device with its own enclosure (e.g. position switch).
V, M
– supply disconnecting/ isolating device. A disconnector in accordance with 5.3.2 b of EN 60204-1:2006 or a circuit-breaker in accordance with 5.3.2c of EN 60204-1:2006 shall be provided. V, D 5.9.2 Malfunction Malfunction of position switches, interlocking guards, switching devices, trip devices and covered electrical devices (enclosures) due to ambient influences e.g. dust, abrasive blasting media, increased temperature (caused by hot castings). Emergency stop device in accordance with EN ISO 13850 as well as stop category 1 (9.2.2 of EN 60204-1:2006) shall be provided. V, D Interlocking guards and trip devices shall be equipped with position switches in accordance with 10.1.4 of EN 60204-1:2006. V, D
Interlocking guards and trip devices as well as switching devices, covered electrical devices (see 11.4 of EN 60204-1:2006) and ESPD shall be protected against ambient influences by V, D
– design, e. g. enclosures withstanding mechanical and thermal stresses, (heat) shields, sealing against dust, – degree of protection, see EN 60529 and 11.3 of EN 60204-1:2006. Minimum requirement is IP 2X or IP XXB. Where the top surface of an enclosure is easily accessible, IP 4X or IP XXD. Ventilated enclosures with air cleaning, IP 32. If protection against dust is necessary, IP 65.
Emergency switching off device: Push-button operated switches shall be used (see 10.8.2 of EN 60204-1:2006). V, D 5.10 Electrostatic phenomena 5.10.1 Electrical shock, fire Electrostatic discharge. 6.2 and 7.2.6 of CENELEC R044-001, February 1999. V, M 5.11 Noise 5.11.1 Noise Noise
− of the blastwheels and their drives;
− by loading and unloading the machines;
− of hydraulic systems and hyd
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