Foundry machinery - Safety requirements for abrasive blasting equipment

Gießereimaschinen - Sicherheitsanforderungen für Strahlanlagen

Machines de fonderie - Prescriptions de sécurité pour équipements de grenaillage

Livarski stroji - Varnostne zahteve za opremo za peskanje

General Information

Status
Not Published
Technical Committee
Drafting Committee
Current Stage
5060 - Closure of Vote - Formal Approval
Due Date
28-Jan-2009
Completion Date
28-Jan-2009

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SLOVENSKI STANDARD
SIST EN 1248:2002/kprA1:2008
01-december-2008
Livarski stroji - Varnostne zahteve za opremo za peskanje
Foundry machinery - Safety requirements for abrasive blasting equipment
Gießereimaschinen - Sicherheitsanforderungen für Strahlanlagen
Machines de fonderie - Prescriptions de sécurité pour équipements de grenaillage
Ta slovenski standard je istoveten z: EN 1248:2001/prA1
ICS:
25.120.30 Livarska oprema Moulding equipment
SIST EN 1248:2002/kprA1:2008 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 1248:2002/kprA1:2008
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SIST EN 1248:2002/kprA1:2008
EUROPEAN STANDARD
FINAL DRAFT
EN 1248:2001
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
August 2008
ICS 25.120.30
English Version
Foundry machinery - Safety requirements for abrasive blasting
equipment

Machines de fonderie - Prescriptions de sécurité pour Gießereimaschinen - Sicherheitsanforderungen für

équipements de grenaillage Strahlanlagen

This draft amendment is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee

CEN/TC 202.

This draft amendment A1, if approved, will modify the European Standard EN 1248:2001. If this draft becomes an amendment, CEN

members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment

into the relevant national standard without any alteration.

This draft amendment was established by CEN 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.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and

shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1248:2001/prA1:2008: E

worldwide for CEN national Members.
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SIST EN 1248:2002/kprA1:2008
EN 1248:2001/prA1:2008 (E)
Contents Page

Foreword..............................................................................................................................................................3

1 Modification to "Contents" ...................................................................................................................4

2 Modification to "Foreword" ..................................................................................................................4

3 Modification to "Introduction"..............................................................................................................4

4 Modification to Clause "2 Normative references"..............................................................................4

5 Modification to Clause "3 Terms and definitions" .............................................................................6

6 Modification to Clause "4 Hazards".....................................................................................................6

7 Modification to "5.1 General" ...............................................................................................................7

8 Modification to Table 1 of Clause "5 Safety requirements and/or measures" ................................8

9 Modification to Clause "6 Verification of the safety requirements and/or measures".................21

10 Modification to Clause "7 Information for use" ................................................................................21

11 Modification to Annex B "Figure B.1 — Processing scheme with abrasive blasting media

preparation (see 3.2)"..........................................................................................................................24

12 Modification to Annex ZA ...................................................................................................................26

13 Addition of Annex ZB ..........................................................................................................................26

14 Modification to "Bibliography"...........................................................................................................27

Figures

Figure B.1 — Processing scheme with abrasive blasting media preparation (see 3.2)........................... 25

Tables

Table 1 — Significant hazards, hazardous situations, safety requirements and/or measures ................. 8

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SIST EN 1248:2002/kprA1:2008
EN 1248:2001/prA1:2008 (E)
Foreword

This document (EN 1248:2001/prA1:2008) has been prepared by Technical Committee CEN/TC 202 “Foundry

machinery”, the secretariat of which is held by DIN.
This document is currently submitted to the Formal Vote.

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 Annexes ZA and ZB, which are integral parts of this

document.

The new safety requirements as stated in this document comply with the additional relevant Essential

Requirements of the new Machinery Directive 2006/42/EC complementing the existing Machinery Directive

98/37/EC.
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SIST EN 1248:2002/kprA1:2008
EN 1248:2001/prA1:2008 (E)
1 Modification to "Contents"

Add "Figures" and "Tables" at the end of the contents and update the table of contents:

Figures
Figure B.1 — Processing scheme with ….
Tables
Table 1 — Significant hazards, hazardous ….
2 Modification to "Foreword"
Replace the 4 paragraph with the following:

"For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this

document.".
3 Modification to "Introduction"
Replace the text of the clause "Introduction" with:
"This European Standard is a type C standard as stated in EN ISO 12100.

The machinery concerned and the extent to which hazards, hazardous situations and events are covered are

indicated in the scope of this European Standard.

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.

Where for clarity an example of a preventative measure is given in the text, this should not be considered as

the only possible solution. Other solutions can be used as far as they fulfil correctly the criteria expressed in

the requirement.

This European Standard assumes, that the equipment is operated and maintained by trained personnel.".

4 Modification to Clause "2 Normative references"
Replace the 1 paragraph with:

"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.".

Due to the extensive update (e.g., EN by EN ISO) and the old format of the referenced standards, replace the

list of standards with:

"EN 286-1, Simple unfired pressure vessels designed to contain air or nitrogen — Part 1: Pressure vessels for

general purposes

EN 349, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body

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SIST EN 1248:2002/kprA1:2008
EN 1248:2001/prA1:2008 (E)

EN 620, Continuous handling equipment and systems — Safety and EMC requirements for fixed belt

conveyors for bulk materials

EN 626-1, Safety of machinery — Reduction of risks to health from hazardous substances emitted by

machinery — Part 1: Principles and specifications for machinery manufacturers

EN 842, Safety of machinery — Visual danger signals — General requirements, design and testing

EN 953, Safety of machinery — Guards — General requirements for the design and construction of fixed and

movable guards

EN 981, Safety of machinery — System of auditory and visual danger and information signals

EN 982, Safety of machinery — Safety requirements for fluid power systems and their components —

Hydraulics

EN 999, Safety of machinery — The positioning of protective equipment in respect of approach speeds of

parts of the human body
EN 1037, Safety of machinery — Prevention of unexpected start-up

EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principles for design

and selection
EN 1265, Noise test code for foundry machines and equipment

EN 60079-0, Electrical apparatus for explosive gas atmospheres — Part 0: General requirements

(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)

EN ISO 11688-1, 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 13849-1:2006, Safety of machinery — Safety-related parts of control systems — Part 1: General

principles for design (ISO 13849-1:2006)
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SIST EN 1248:2002/kprA1:2008
EN 1248:2001/prA1:2008 (E)

EN ISO 13850:2006, 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)

ISO 3864-1, Graphical symbols — Safety colours and safety signs — Part 1: Design principles for safety signs

in workplaces and public areas
ISO 7000, Graphical symbols for use on equipment — Index and synopsis

CENELEC R044-001, February 1999, Safety of machinery — Guidance and recommendations for the

avoidance of hazards due to static electricity".

NOTE Updating the amended standards mentioned in Clauses 3 to 8 is not necessary, due to the

modifications given hereafter.
5 Modification to Clause "3 Terms and definitions"
Replace the 1 two sentences with:

"For the purpose of this document, the terms and definitions given in EN ISO 12100:2003 and the following

apply.

NOTE Definition used in EN and ISO standards referred to in this European Standard are also valid for this European

Standard.".
Replace definition 3.3 and 3.4 with:
"3.3
abrasive media

granular metallic or non-metallic material to be forcibly applied to a surface to achieve the desired result

NOTE Classification of metallic abrasives see EN ISO 11124-1, of non-metallic abrasives see EN ISO 11126-1.

3.4
free-jet work

manual blasting process carried out with hand held nozzles without protective separation between the

operator and the rebounding abrasive media and generated dust

NOTE In general the use of an appropriate abrasive blasting helmet and other protective clothing will be

necessary in this case.".
6 Modification to Clause "4 Hazards"
Replace the headline of Clause 4 with:
"4 List of significant hazards".
Replace the 3 paragraph "An assessment of the foreseeable risks arising …" with:

"The significant hazards, hazardous situations and events, as far as they are dealt with in this document,

identified by risk assessment as significant for this type of machinery and which require action to eliminate or

reduce the risk, are listed in Clause 5, Table 1, together with the appropriate safety measures."

and delete the last paragraph.
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SIST EN 1248:2002/kprA1:2008
EN 1248:2001/prA1:2008 (E)
7 Modification to "5.1 General"
Replace the sub-clause 5.1 with:
"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:
V: Visual inspection verifies the required features of the components.

P: A test/check verifies that the features provided perform their function in such a way that the requirement

is met.
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SIST EN 1248:2002/kprA1:2008
EN 1248:2001/prA1:2008 (E)
M: Measurement verifies that requirements are met to the specified limits.

D: Drawings and/or calculations verify that the design characteristics of the components provided meet the

requirements.
Verification may involve more than one method.".
8 Modification to Table 1 of Clause "5 Safety requirements and/or measures"

Due to the new format of the Table 1 and extensive amendments re new/updated standards, replace Table 1

as a whole (including the headline) with:

"Table 1 — Significant hazards, hazardous situations, safety requirements and/or measures

Column 1 Column 2 Column 3 Column 4
Safety measures according to the
Verifi-
Significant hazard Hazardous situation mentioned standards and/or specific
cation
measures
5.2 Centrifugal wheel assembly (see Annex B, Figures B.2 and B.3)
5.2.1 Access to shear traps between 3.25.5 of EN ISO 12100-1:2003 and V, D

Shearing and fixed and internal rotating parts interlocking guard with guard locking according

crushing. Cutting from either a hooded wheel or EN 953 and EN 1088, connected with stop

and severing
accessible through a door when category 1 according 4.1.4 of
the wheel is running up or down. EN ISO 13850:2006.
5.2.2 Exposure to thrown off abrasive 3.25.5 of EN ISO 12100-1:2003 and V
Impact by ejection media/workpiece or projectile.
EN 953, e.g. withstand the impact of propelled
of parts
abrasive media as well as an escaping wheel
blade whilst the wheel is running.

5.2.3 Access to pneumatic/hydraulic 3.25.1 of EN ISO 12100-1:2003 (Fixed guard). V

Cutting, severing actuated moving parts of the
4.10 of EN ISO 12100-2:2003.
crushing abrasive media feed valve, e.g. in
Ensure possibility of depressurising when
case of trouble-shooting
isolating the machine.
(clogging within pipes) and during
maintenance.
5.3 Blasting chamber
5.3.1 Blasting chamber of centrifugal blasting machines
5.3.1.1 Access to the blasting chamber 3.25.5 of EN ISO 12100-1:2003 and V, D
Crushing, with doors. 5.4.1 of EN 1088:1995/A12007 connected with
shearing, cutting, stop category 1 according 4.1.4 of
Movement of the wheels and/or
impact EN ISO 13850:2006.
wheel blades escaping whilst the
wheel is running. 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.
It shall not be possible to open the door(s) until V
the abrasive media flow had been shut off.
Either
a) the wheels shall have come to a complete
stop;
b) the wheel hood covers shall be in closed
position.
The start up of the wheels or the opening
movement of the wheel hood covers shall only
be possible after the doors are closed
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SIST EN 1248:2002/kprA1:2008
EN 1248:2001/prA1:2008 (E)
Column 1 Column 2 Column 3 Column 4
Safety measures according to the
Verifi-
Significant hazard Hazardous situation mentioned standards and/or specific
cation
measures
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 Clause 4 of EN ISO 12100-2:2003 (Risk V
media at entry and exit points of reduction by design). The abrasive material
machines. 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.

5.3.1.3 Persons being trapped inside the Interlocking devices which prevent start-up shall V

Crushing, impact, blasting chamber at the start of be fitted, e.g. removable handles, electronic

abrasive media the operating cycle e.g. locks.
attack
– in the case of blasting In addition devices shall be fitted which allow V, P
chambers permitting the
escape of persons from inside the accessible
entry of personnel where full chamber (see Annex B, Figures B.5 and B.6),
access is possible from the e.g.
surrounding floor areas or
– doors openable from inside the chamber,
platforms without further
– illuminated emergency stop device inside
means (e.g. ladders) for the
the chamber positioned by each door
purposes of inspection,
(EN ISO 12100-2:2003, 5.5.2).
– cleaning, removal of dropped
Warning signs (EN 61310-1) stating "Do not V
workpieces,
enter the blasting chamber unless the machine
– trouble-shooting,
is isolated".
– simultaneous maintenance
by operator or maintenance
people.

5.3.1.4 Alternative use of centrifugal 3.25.4 of EN ISO 12100-1:2003 and EN 1088. V, P

Abrasive media blasting machines for air blasting,
An interlock between the wheel drive and air
attack unexpected start of centrifugal
blasting system (e.g. a key system) shall be
blasting wheel during air blasting.
fitted to prevent rotation of the centrifugal wheel
during manual air blasting.

5.3.1.5 Movement of power-driven doors Use one or more of the following measures as V

Crushing impact when opening and shutting. appropriate:
Crushing between door and – 5.3.2.6 of EN ISO 12100-2:2003
frame or structure. (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),
EN 349 (Safety distances).
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SIST EN 1248:2002/kprA1:2008
EN 1248:2001/prA1:2008 (E)
Column 1 Column 2 Column 3 Column 4
Safety measures according to the
Verifi-
Significant hazard Hazardous situation mentioned standards and/or specific
cation
measures
The operating manual shall provide instructions
to avoid danger points due to machine
positioning and instruction for floor marking.
5.3.1.6 Unexpected closing of doors 3.26.7 of EN ISO 12100-1:2003 V
Crushing and under gravity. Devices to prevent the doors falling from the
shearing 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.

5.3.1.7 Falling of parts caused by Design of the hook with a safety factor of four to D, V

Crushing abrasive wear of load hooks. allow abrasive wear.
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 Mechanical safety device, e.g. restraint rolls in

D, V
machine. 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).

5.3.1.8 Slip, trip within a walk-in blasting Install anti-slip floorplates or grids inside the V

Slip, trip chamber permitting the entry of chamber
personnel for inspection, (for apertures see EN ISO 13857).
cleaning, maintenance or trouble-
shooting.
5.3.2 Blasting chamber of air blasting machines

5.3.2.1 Start of the blasting process if 3.25.4 of EN ISO 12100-1:2003 and EN 1088 V, D

Abrasive media doors are opened or opening of (Interlocked door).
attack doors during blasting.
Design to ensure that blasting cannot be
(environment and
initiated until the doors are closed.
persons coming
Opening of a door shall stop the blasting
from outside)
process.

5.3.2.2 Persons being trapped inside the Interlocking devices which prevent start-up shall V

Crushing, impact, blasting chamber at the start of be fitted, e.g. removable handles, key system,

abrasive media the operating cycle e.g. electronic locks (see also 5.9).
attack
– in the case of blasting In addition devices shall be fitted which allow V, P
chambers permitting the
escape of persons from inside the accessible
entry of personnel where full
chamber, e.g.
access is possible from the
– doors openable from inside the chamber,
surrounding floor areas or
– illuminated emergency stop device inside
platforms without further
the chamber positioned by each door
means (e.g. ladders) for the
(EN ISO 12100-2:2003, 5.5.2).
purposes of inspection,
– cleaning, removal of dropped Warning signs (EN 61310-1) stating "Do not V
enter the blasting chamber unless the machine
workpieces,
is isolated".
– trouble-shooting,
– simultaneous maintenance
by operator or maintenance
people.
---------------------- Page: 12 ----------------------
SIST EN 1248:2002/kprA1:2008
EN 1248:2001/prA1:2008 (E)
Column 1 Column 2 Column 3 Column 4
Safety measures according to the
Verifi-
Significant hazard Hazardous situation mentioned standards and/or specific
cation
measures

5.3.2.3 Movement of power-driven doors Use one or more of the following measures as V

Crushing impact when opening and shutting. appropriate:
Crushing between door and – 5.3.2.6 of EN ISO 12100-2:2003
frame or structure. (Construction of edges),
– 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).
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 Unexpected closing of doors 3.26.7 of EN ISO 12100-1:2003 V
Crushing and under gravity. Devices to prevent the doors falling from the
shearing 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.

5.3.2.5 Slip, trip within a walk-in blasting Install anti-slip floorplates or grids inside the V

Slip, trip chamber permitting the entry of chamber
personnel for inspection, For apertures see EN ISO 13857.
cleaning, maintenance or trouble-
shooting.
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 Alternative use of centrifugal 3.25.4 of EN ISO 12100-1:2003 V, D
Abrasive media blasting machines for air blasting,
Wheel drive and air blasting interlock device to
attack unexpected start of centrifugal
prevent a start of the centrifugal wheel
blasting wheel during air blasting.
movement during manual air blasting (see
EN 1088).
Free jet work inside the blasting 3.25.4 of EN ISO 12100-1:2003 and V, M
chamber.
EN 1088 (interlocked door).
Uncontrolled movement of the
3.26.3 of EN ISO 12100-1:2003 (Provision of
nozzle and/or release of abrasive
hold-to-run nozzle control device with a
media if the hand held device is
maximum overrun time of 1 s).
released.

5.3.3.2 Free jet work inside the blasting Provision of communication means such as V, D

Restriction of chamber. "Viewing window".
communication
---------------------- Page: 13 ----------------------
SIST EN 1248:2002/kprA1:2008
EN 1248:2001/prA1:2008 (E)
Column 1 Column 2 Column 3 Column 4
Safety measures according to the
Verifi-
Significant hazard Hazardous situation mentioned standards and/or specific
cation
measures
5.4 Abrasive media and contaminants conveying system
5.4.1 Access to danger zones between 3.25.1 of EN ISO 12100-1:2003 (e.g. fixed V
Crushing, shearing, fixed and rotating or movable floorplates to walk on).
cutting parts of the following open
Safety distances according to EN 349.
conveying systems:
Apertures according to EN ISO 13857.
– screw conveyor;
– belt conveyor;
– vibrating or scraper
conveyor;
– hopper;
– bucket elevator; In addition for bucket elevators: V
– hopper discharge conveyor. 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).
5.4.2 Access to exposed shaft ends. 3.25.1 of EN ISO 12100-1:2003 and EN 953 V
Entanglement
(Fit fixed guard).
5.4.3 Disintegration and flying off of Designed to EN 286-1. V, D
Impact/crash pressurised parts of the air
(due to inadequacy blasting equipment.
NOTE Other EC Directives may apply to this
of mechanical
equipment, e.g. pressure vessels 87/404/EEC (as
strength)
amended by 90/488/EEC), pressure equipment
97/23/EC.
5.5 Abrasive media and contaminants cleaning, separation and storage device
5.5.1 Access to 3.25.1 of EN ISO 12100-1:2003 and EN 953 V
Cutting or severing
– abrasive media transfer (Fit fixed guard e.g. cover plate).
screw conveyor;
– rotating screens or drums;
– powered abrasive media 3.25.1 of EN ISO 12100-1:2003 and EN 953
feed valves. (Fit fixed covering).
5.5.2 Access to exposed shaft ends. 3.25.1 of EN ISO 12100-1:2003 and EN 953 V
Entanglement (Fit fixed guard).

5.5.3 Any parts subject to electrostatic Adequate earthing of conductive parts and the V, M

Electrostatic charge (parts which have a use of anti-static material for abrasive media

phenomena specific resistance of more than blasting hoses (see EN ISO 3861 and
10 Ωm or parts which have a CENELEC R044-001, February 1999).
specific resistance of le
...

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