oSIST prEN ISO 23779:2022

Shot blasting machinery - safety and environmental requirements (ISO/DIS 23779:2022)

Strahlanlagen - Sicherheits- und Umweltanforderungen (ISO/DIS 23779:2022)

Équipements de grenaillage - Prescriptions de sécurité et de l'environnement (ISO/DIS 23779:2022)

Stroji za peskanje - Varnostne in okoljske zahteve (ISO/DIS 23779:2022)

General Information

• Status: Not Published
• Public Enquiry End Date: 14-Sep-2022
• ICS: 77.180 - Equipment for the metallurgical industry
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 01-Jul-2022
• Due Date: 18-Nov-2022
• Completion Date: 16-Sep-2022
• Ref Project: prEN ISO 23779 - Shot blasting machinery - safety and environmental requirements (ISO/DIS 23779:2022)

Relations

• Revised: SIST EN 1248:2002+A1:2009 - Foundry machinery - Safety requirements for abrasive blasting equipment
• Effective Date: 24-Mar-2021
• Revised: SIST EN 1248:2002+A1:2009 - Foundry machinery - Safety requirements for abrasive blasting equipment
• Effective Date: 18-Jan-2023
• Revised: SIST EN 1248:2002+A1:2009 - Foundry machinery - Safety requirements for abrasive blasting equipment
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN ISO 23779:2022
01-september-2022
Stroji za peskanje - Varnostne in okoljske zahteve (ISO/DIS 23779:2022)
Shot blasting machinery - safety and environmental requirements (ISO/DIS 23779:2022)
Strahlanlagen - Sicherheits- und Umweltanforderungen (ISO/DIS 23779:2022)
Équipements de grenaillage - Prescriptions de sécurité et de l'environnement (ISO/DIS
23779:2022)
Ta slovenski standard je istoveten z: prEN ISO 23779
ICS:
77.180 Oprema za metalurško Equipment for the
industrijo metallurgical industry
oSIST prEN ISO 23779:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 23779:2022

---------------------- Page: 2 ----------------------
oSIST prEN ISO 23779:2022
DRAFT INTERNATIONAL STANDARD
ISO/DIS 23779
ISO/TC 306 Secretariat: SAC
Voting begins on: Voting terminates on:
2022-06-24 2022-09-16
Shot blasting machinery — safety and environmental
requirements
Équipements de grenaillage — Prescriptions de sécurité et de l'environnement
ICS: 77.180; 13.110
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 23779:2022(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022

---------------------- Page: 3 ----------------------
oSIST prEN ISO 23779:2022
ISO/DIS 23779:2022(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 23779
ISO/TC 306 Secretariat: SAC
Voting begins on: Voting terminates on:

Shot blasting machinery — safety and environmental
requirements
Équipements de grenaillage — Prescriptions de sécurité et de l'environnement
ICS: 77.180; 13.110
This document is circulated as received from the committee secretariat.
COPYRIGHT PROTECTED DOCUMENT
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2022
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
NOT BE REFERRED TO AS AN INTERNATIONAL
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on STANDARD UNTIL PUBLISHED AS SUCH.
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
IN ADDITION TO THEIR EVALUATION AS
or ISO’s member body in the country of the requester. BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
ISO copyright office
USER PURPOSES, DRAFT INTERNATIONAL
CP 401 • Ch. de Blandonnet 8
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
CH-1214 Vernier, Geneva
POTENTIAL TO BECOME STANDARDS TO
Phone: [phone]
WHICH REFERENCE MAY BE MADE IN
Reference number
Email: [e-mail]
NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 23779:2022(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
Published in Switzerland
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
ii
  © ISO 2022 – All rights reserved
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022

---------------------- Page: 4 ----------------------
oSIST prEN ISO 23779:2022
ISO/DIS 23779:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 3
3 Terms and definitions . 3
4 Significant hazards, environmental impact and energy usage . 5
4.1 General . 5
4.2 Significant hazards . 5
4.3 Environmental impact and energy usage . 5
5 Safety requirements, protective measures, risk reduction measures .5
5.1 General . 5
5.2 Guards and doors . 6
5.3 Electrical equipment . 6
5.4 Noise . 6
5.5 Emergency stop . 6
5.6 Control systems . 6
5.7 Wheel blaster . 7
5.8 Air blaster . 8
5.9 Blasting chamber . . 9
5.10 Shot blasting media transport and recovery system .12
5.11 Power and driving devices . 12
5.12 Loading and unloading systems for workpieces . 13
5.13 Wear related hazards . 13
5.14 Static electricity. 14
5.15 Substances . 14
5.16 Integration with external equipment . 15
6 Energy-efficiency and reduction of environmental impact .15
6.1 General . 15
6.2 Acquisition . 16
6.3 Production . 16
6.4 Use . 16
6.4.1 Input . 16
6.4.2 Output . 17
6.5 End of life . 17
7 Verification of the safety requirements and/or measures .17
8 Information for use .17
8.1 General . 17
8.2 Instruction handbook. 18
8.2.1 Information related to installation . 18
8.2.2 Information related to operation. 18
8.2.3 Information related to maintenance . 18
8.3 Marking . 18
Annex A (informative) Figures of shot blasting machinery .19
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of EU Directive 2006/42/EC aimed to be covered .23
Bibliography .25
iii
© ISO 2022 – All rights reserved

---------------------- Page: 5 ----------------------
oSIST prEN ISO 23779:2022
ISO/DIS 23779:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT),see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 306, Foundry machinery.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
  © ISO 2022 – All rights reserved

---------------------- Page: 6 ----------------------
oSIST prEN ISO 23779:2022
ISO/DIS 23779:2022(E)
Introduction
This document is a type C standard as stated in ISO 12100:2010 and also deals with aspects of
environmental impact and energy efficiency.
The design, the construction and the actual operation of shot blasting machinery affects aspects of
safety, energy usage and environmental impact. These may influence each other or may be in conflict
to each other. The safety requirements defined in this standard override the requirements defined for
minimizing energy usage and environmental impact.
The machinery concerned and the extent to which hazards, hazardous situations and hazardous events
are covered are indicated in the scope of this document. When provisions of this type C standard are
different from those which are stated in type A or B standards, the provisions of this type C standard
take precedence over the provisions of the other standards, for machines that have been designed and
built according to the provisions of this type C standard.
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 document assumes, that the shot blasting machinery is operated and maintained by trained
personnel.
v
© ISO 2022 – All rights reserved

---------------------- Page: 7 ----------------------
oSIST prEN ISO 23779:2022

---------------------- Page: 8 ----------------------
oSIST prEN ISO 23779:2022
DRAFT INTERNATIONAL STANDARD ISO/DIS 23779:2022(E)
Shot blasting machinery — safety and environmental
requirements
1 Scope
This standard deals with shot blasting machinery.
This standard covers
— all significant hazards, hazardous situations and hazardous events relevant to shot blasting
machinery, when used as intended and under the conditions foreseen by the manufacturer, including
reasonably foreseeable misuse;
— measures for minimization of environmental impact and energy usage of shot blasting machinery.
Shot blasting machinery covers
— wheel blasting machinery;
— air blasting machinery for dry and wet blasting;
— combined wheel and air blasting machinery.
Interfaces between shot blasting machinery and other equipment used in shot blasting but not in scope
of this standard are given in Figure 1.
1
© ISO 2022 – All rights reserved

---------------------- Page: 9 ----------------------
oSIST prEN ISO 23779:2022
ISO/DIS 23779:2022(E)
Key
shot blasting machinery
equipment out of scope
1 mechanical and electrical interface to external workpiece transport system
2 connector to electrical energy supply
3 connector to fresh air supply ducting
4 connector to exhaust air ducting
5 connector to pressurized air supply
6 connector to water supply
7 connector to waste water system
8 interface for safe exchange of control signals
9 connector for fresh air supply for respiratory protection device (in blast rooms)
Figure 1 — Interfaces of shot blast machinery to ancillary machinery
The specific significant risks related to mobile and movable shot blasting machinery (e. g. shot blasting
machines designed for operation at changing locations) are not dealt with in this standard.
This standard does not apply to
— high pressure water jet machinery;
— dry-ice blasting machinery.
This standard is not applicable to shot blasting machines manufactured before the date of its publication
as ISO standard.
NOTE The requirements defined in this standard may serve as a guideline for a risk assessment of shot
blasting machines manufactured before the date of its publication as ISO standard.
2
  © ISO 2022 – All rights reserved

---------------------- Page: 10 ----------------------
oSIST prEN ISO 23779:2022
ISO/DIS 23779:2022(E)
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
ISO 3744:2010, Acoustics — Determination of sound power levels and sound energy levels of noise sources
using sound pressure — Engineering methods for an essentially free field over a reflecting plane
ISO 3746:2010, Acoustics — Determination of sound power levels and sound energy levels of noise sources
using sound pressure — Survey method using an enveloping measurement surface over a reflecting plane
ISO 3864-1:2011, Graphical symbols — Safety colours and safety signs — Part 1: Design principles for
safety signs and safety markings
ISO 7000:2014, Graphical symbols for use on equipment — Registered symbols
ISO 7731:2003, Ergonomics — Danger signals for public and work areas — Auditory danger signals
ISO 9614-1:1993, Acoustics — Determination of sound power levels of noise sources using sound intensity
— Part 1: Measurement at discrete points
ISO 9614-2:1996, Acoustics — Determination of sound power levels of noise sources using sound intensity
— Part 2: Measurement by scanning
ISO 10218-2:2011, Robots and robotic devices — Safety requirements for industrial robots — Part 2: Robot
systems and integration
ISO 11161:2010, Safety of machinery - Integrated manufacturing systems - Basic requirements
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design
ISO 13850:2015, Safety of machinery — Emergency stop function — Principles for design
ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by upper
and lower limbs
ISO 14119:2013, Safety of machinery — Interlocking devices associated with guards — Principles for
design and selection
ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and construction of
fixed and movable guards
ISO 14122-2:2016, Safety of machinery — Permanent means of access to machinery — Part 2: Working
platforms and walkways
ISO 14122-3:2016, Safety of machinery — Permanent means of access to machinery — Part 3: Stairs,
stepladders and guard-rails
IEC 60204-1:2016, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
IEC/TS 60079-32-1:2017, Explosive Atmospheres — Part 32-1: Electrostatic hazards, guidance
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12100:2010 and the following
apply.
3
© ISO 2022 – All rights reserved

---------------------- Page: 11 ----------------------
oSIST prEN ISO 23779:2022
ISO/DIS 23779:2022(E)
ISO and IEC maintain terminologydatabases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
external workpiece transport system
system that transports the workpiece to or from the shot blasting machine
3.2
internal workpiece transport system
system that transports the workpiece within the shot blasting machine
3.3
wheel blaster
device which accelerates the shot blasting media by a rotating wheel with blades
3.4
air blaster
assembly consisting of a nozzle and connected hose(s) or tube(s), which accelerates the shot blasting
media by pressurized air
3.5
accessible blasting chamber
blasting chamber which, by designated use, is designed to be entered by personnel
3.6
workspace
workplace for the operator as defined by the manufacturer of the shot blasting machine
3.7
interior workspace
workspace inside of a shot blasting machine
3.8
screw conveyor
device that uses a rotating helical blade to move shot blasting media, horizontally or at a slight incline
3.9
belt conveyor
endless belt between two, or more, pulleys to move shot blasting media or products, horizontally or
incline
3.10
vibrating conveyor
device that transports shot blasting media or products by using vibration and gravity
3.11
scraper conveyor
device to transport bulk shot blasting media over a floor with the help of scrapers
3.12
hopper
container for storing shot blasting media or for providing or replenishing shot blasting media for the
shot blasting process
3.13
bucket elevator
vertical belt conveyor where buckets fixed to the belt transporting shot blasting media up to a desired
height
4
  © ISO 2022 – All rights reserved

---------------------- Page: 12 ----------------------
oSIST prEN ISO 23779:2022
ISO/DIS 23779:2022(E)
3.14
hopper discharge conveyor
mechanical device, screw conveyor, belt conveyor or other suitable transport system, to feed shot
blasting media from the hopper to the shot blasting machine
3.15
switch valve
device for closing or opening the shot blasting media flow to the shot blasting process, where operating
the valve can be electrical, pneumatical or magnetical
3.16
magnetic separator
system, mostly operating with partial magnetic drums, where a ferromagnetic- and non-ferromagnetic
mixture is separated to obtain reusable shot blasting media for the shot blasting process
3.17
cleaning system
device to separate small particles from shot blasting media, to obtain a required mixture, mostly
combined with a sieve for separating large particles
4 Significant hazards, environmental impact and energy usage
4.1 General
The variety of machinery could not be covered in all details in a standard. To deal with this fact, an
individual risk assessment of the machinery in question shall be carried out considering the safety
requirements of this document.
Significant hazards identified in this individual risk assessment but not dealt with in this standard shall
be avoided respectively reduced by applying the principles of ISO 12100:2010.
If combinations of machines and/or machine functions described at different parts of the standard are
located in the same danger zone, the different measures shall be considered together.
4.2 Significant hazards
Clause 5 gives requirements to prevent or minimise all hazards, hazardous situations and events
identified by risk assessment as significant for this type of machinery.
See ISO 12100:2010 for measures against hazards that are relevant but not significant for this machine
type.
NOTE ISO 12100:2010 contains information for the procedure of risk assessment.
4.3 Environmental impact and energy usage
Clause 6 contains measures for minimization of
— environmental impact and
— energy usage.
5 Safety requirements, protective measures, risk reduction measures
5.1 General
Shot blasting machinery shall comply with the safety requirements and/or protective measures
against the significant hazards given in Clause 5. In addition, shot blasting machinery shall be designed
5
© ISO 2022 – All rights reserved

---------------------- Page: 13 ----------------------
oSIST prEN ISO 23779:2022
ISO/DIS 23779:2022(E)
according to the principles of ISO 12100:2010for relevant hazards which are not dealt with by this
document.
Warning devices and safety signs shall be in accordance with ISO 3864-1:2011, ISO 7000:2014 or
ISO 7731:2003.
5.2 Guards and doors
If access to a work area is limited by separating guards/doors, these shall be secured by the safety-
related control system according to the performance level given in Table 1.
All other potential accesses to hazardous areas shall be secured by guards in accordance with
ISO 13857:2008, ISO 14120:2015 and ISO 14119:2013.
5.3 Electrical equipment
Electrical equipment of shot blasting machinery shall comply with IEC 60204-1:2016.
5.4 Noise
By design and construction, the emission of noise shall be minimized. Technical progress and the
availability of means for noise reduction, in particular at the source, shall be taken into account.
NOTE 1 ISO/TR 11688-1:1995 gives general technical information on widely recognized technical rules and
means for design and construction of low-noise machinery.
NOTE 2 ISO/TR 11688-2:1998 gives useful information on noise generation mechanisms in machinery and
equipment.
See ISO 3744:2010, ISO 3746:2010, ISO 9614-1:1993, ISO 9614-2:1996 for requirements for noise
measurement.
NOTE 3 Noise emissions limit values to air are subject to national regulation.
5.5 Emergency stop
Emergency stop devices shall comply with ISO 13850:2015.
5.6 Control systems
Safety related control systems shall be designed according to ISO 13849-1:2015. This applies also for
input and processing of safety related parameters (e. g. operating parameters).
Table 1 — Required performance level (PLr) for control systems of shot blastingmachinery
Safety function Clause PLr
Guard locking of access points of wheelblastersby interlock- 5.2 d
ingmovableguardsassociated with an interlocking device 5.7, Table 2, row 1
interlocked with the hazardous movement and a guard 5.7, Table 3, row 1
locking device
Guard locking of access points of wheel blasters by fixed 5.2 c
guards associated with an interlocking device interlocked 5.7, Table 2, row 1
with the hazardous movement 5.7, Table 3, row 1
Guard locking of access to blasting chamber of wheel blast- 5.2 d
ing machines without additional safety measures 5.7, Table 2, row 2
5.7, Table 3, row 1
6
  © ISO 2022 – All rights reserved

---------------------- Page: 14 ----------------------
oSIST prEN ISO 23779:2022
ISO/DIS 23779:2022(E)
Table 1 (continued)
Safety function Clause PLr
Guard locking of access to blasting chamber of wheel blast- 5.2 c
ing machines with additional safety measures 5.7, Table 2, row 2
5.7, Table 3, row 1
Maximum overrun time of hold-to-run nozzle control device 5.8, Table 4, row 4 d
Interlocking of means of access with the shot blasting pro- 5.2 c
cess and dangerous movement of parts,for blasting cham- 5.9, Table 5, row 2, sub-row 1
bers without interior workspace
If access is possible before the shot blasting process has
stopped, interlocking with guard locking is required
Interlocking of means of access with the shot blasting pro- 5.2 c
cess and dangerous movement of parts,for blasting cham- 5.9, Table 5, row 2, sub-row 2
bers with interior workspace
Interlocking to prevent start up of the shot blasting process 5.9, Table 5, row 3 c
Interlocking between wheel drive and air blaster 5.9, Table 5, row 3 c
Interlocking with guard locking with hazardous movement 5.9, Table 7, row 1 c
of parts 5.9, Table 7, row 2
Access to hazardous moving parts of the shot blasting media 5.10, Table 9, row 1 c
transport and recovery system
Avoid uncontrolled movement of machine parts 5.11, Table 10, row 1 c
Avoid uncontrolled movement of machine parts due to loss 5.11, Table 10, row 2 c
or reactivation of electric, pneumatic or hydraulic energy
supply
Interlocking with external equipment 5.
...