oSIST prEN ISO 18623-1:2023

SLOVENSKI STANDARD
oSIST prEN ISO 18623-1:2023
01-julij-2023
Kompresorji za zrak in sistemi na stisnjen zrak - 1. del: Varnostne zahteve za
kompresorje za zrak (ISO/DIS 18623-1:2023)
Air compressors and compressed air systems - Part 1: Air compressor safety
requirements (ISO/DIS 18623-1:2023)
Luftkompressoren und Druckluftsysteme - Luftkompressoren - Teil 1:
Sicherheitsanforderungen (ISO/DIS 18623-1:2023)
Compresseurs à air et systèmes à air comprimé - Partie 1: Exigences de sécurité des
compresseurs à air (ISO/DIS 18623-1:2023)
Ta slovenski standard je istoveten z: prEN ISO 18623-1
ICS:
23.140 Kompresorji in pnevmatični Compressors and pneumatic
stroji machines
23.160 Vakumska tehnologija Vacuum technology
oSIST prEN ISO 18623-1:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 18623-1:2023

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oSIST prEN ISO 18623-1:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 18623-1
ISO/TC 118/SC 6 Secretariat: SIS
Voting begins on: Voting terminates on:
2023-04-25 2023-07-18
Air compressors and compressed air systems —
Part 1:
Air compressor safety requirements
Compresseurs à air et systèmes à air comprimé —
Partie 1: Exigences de sécurité des compresseurs à air
ICS: 23.140
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,
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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 18623-1:2023(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 2023

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oSIST prEN ISO 18623-1:2023
ISO/DIS 18623-1:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 18623-1
ISO/TC 118/SC 6 Secretariat: SIS
Voting begins on: Voting terminates on:

Air compressors and compressed air systems —
Part 1:
Air compressor safety requirements
Compresseurs à air et systèmes à air comprimé —
Partie 1: Exigences de sécurité des compresseurs à air
ICS: 23.140
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 2023
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
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NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 18623-1:2023(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
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NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
ii
  © ISO 2023 – All rights reserved
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023

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oSIST prEN ISO 18623-1:2023
ISO/DIS 18623-1:2023(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 3
3.1 General terms . 4
3.2 Specific terms . 4
4 Safety requirements and/or protective measures . 5
4.1 General . 5
4.2 Mechanical safety . 6
4.2.1 Guards . 6
4.2.2 Fluid injection . 7
4.2.3 Loss of stability . 7
4.2.4 Slip, trip and fall . 8
4.3 Electrical safety . 8
4.3.1 Generally applicable . 8
4.3.2 Protection from overload . 8
4.3.3 Protection from live parts . 8
4.3.4 Portable and skid-mounted compressor units . 8
4.4 Control systems . 9
4.4.1 General . 9
4.4.2 Failure of safety related control system energy supply . 9
4.4.3 Start/restart . 9
4.4.4 Manual suspension of safety functions . 9
4.4.5 Emergency stop function . 10
4.4.6 Safety-related stop function . 10
4.4.7 Manual reset . 10
4.4.8 External influences on electrical equipment . 10
4.4.9 Electromagnetic phenomena . 10
4.4.10 Pneumatic and/or hydraulic control systems . 11
4.5 Thermal safety. 11
4.6 Noise . 11
4.7 Materials and substances processed, used or exhausted.12
4.7.1 Micro-organisms, biological and microbiological substances .12
4.7.2 Breathing difficulties .12
4.8 Fire and explosion .12
4.8.1 Electrostatic phenomena .12
4.8.2 Oil-flooded rotary air compressor units .12
4.8.3 Oil-lubricated reciprocating air compressor units .13
4.8.4 Oil-lubricated reciprocating compressor units operating above 50 bar . 14
4.8.5 Compressor units driven by combustion engines . 14
4.9 Ergonomic principles . 14
4.9.1 General . 14
4.9.2 Manual handling of compressor units . 14
4.9.3 Portable and skid-mounted compressor units .15
4.10 Breaking down of machinery parts and other functional disorders .15
4.10.1 Break-up during operation . 15
4.10.2 Low temperature operation . 15
4.10.3 Liquid shock . 16
4.10.4 Coolant system . 16
4.11 Pressure relief – fragmentation . 16
4.11.1 General . 16
4.11.2 Design specifications of pressure relief devices . 17
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oSIST prEN ISO 18623-1:2023
ISO/DIS 18623-1:2023(E)
4.11.3 Turbo compressor units . 17
4.11.4 Multi stage compressor units. 17
4.12 Information and warning devices . 17
5 Verification of safety requirements and/or protective measures .17
5.1 Pressure testing . 17
5.2 Noise . 18
5.2.1 General . 18
5.2.2 Sound power level of compressor units for use outdoors. 18
5.3 Stability of portable compressor units . 18
5.4 Structure of verification. 18
6 Information for use .20
6.1 General requirements . 20
6.2 Accompanying documents (in particular, instruction handbook) . 21
6.2.1 Instruction handbook . 21
6.2.2 Information relating to the use of the compressor/compressor unit .23
6.3 Specific types of compressors . .23
6.3.1 General .23
6.3.2 Portable and skid-mounted air compressor units . 24
6.3.3 Entry to inlet ducts and enclosures . 24
6.4 Service instructions . 24
6.4.1 General . 24
6.4.2 Precautions for service/maintenance . 25
6.5 Markings, signs and written warnings . 25
6.5.1 Generally applicable .25
6.5.2 Compressor unit enclosures . 26
6.5.3 Off-road portable and skid-mounted air compressor units .26
6.5.4 Markings (in particular, data plate) . 26
6.6 Noise . 27
6.6.1 A-weighted emission sound pressure level and A-weighted sound power
level declaration . 27
6.6.2 Hearing protection . 27
6.7 Dismantling . 27
Annex A (informative) List of significant hazards .28
Annex B (informative) Control systems .30
Annex C (informative) Labels, signs and tags .32
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered .37
Bibliography .39
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oSIST prEN ISO 18623-1:2023
ISO/DIS 18623-1:2023(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 118, Compressors and pneumatic tools,
machines and equipment, Subcommittee SC 6, Air compressors and compressed air systems.
A list of all parts in the ISO 18623 series can be found on the ISO website.
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.
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oSIST prEN ISO 18623-1:2023
ISO/DIS 18623-1:2023(E)
Introduction
This document is a type-C standard as stated in ISO 12100.
This document is of relevance, in particular, for the following stakeholder groups representing the
market players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organisations, market surveillance etc.)
Others can be affected by the level of machinery safety achieved with the means of the document by the
above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e. g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this document.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events
are covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or
type-B standards, the requirements of this type-C standard take precedence over the requirements of
the other standards for machines that have been designed and built according to the requirements of
this type-C standard.
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oSIST prEN ISO 18623-1:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 18623-1:2023(E)
Air compressors and compressed air systems —
Part 1:
Air compressor safety requirements
1 Scope
This document is applicable to compressors and compressor units having an operating pressure
greater than 0,5 bar and designed to compress air, nitrogen or inert gases. This document deals with
all significant hazards, hazardous situations and events relevant to the design, installation, operation,
maintenance, dismantling and disposal of compressors and compressor units when they are used as
intended and under conditions of misuse which are reasonably foreseeable by the manufacturer (see
Clause 4 of this document).
This document includes under the general term compressor units those machines which comprise:
— the compressor;
— a drive system;
— any component or device which is necessary for operation.
This document covers compressors driven by any power media, including battery powered and which
are fitted in or used with motor vehicles.
The significant hazards dealt with in the standard are identified in Annex A of this document.
This document does not cover requirements for compressors and compressor units used in potentially
explosive atmospheres.
This document is not applicable to compressors and compressor units which are manufactured before
the date of publication of this standard.
This document does not cover compressors and compressor units for processing petroleum,
petrochemicals, or chemicals within the scope of ISO/TC 67.
This document does not give performance levels or safety integrity levels for safety related parts of
control systems.
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 2151:2004, Acoustics — Noise test code for compressors and vacuum pumps — Engineering method
(Grade 2)
ISO 3857-1:1977, Compressors, pneumatic tools and machines — Vocabulary — Part 1: General
ISO 3857-2:1977, Compressors, pneumatic tools and machines — Vocabulary — Part 2: Compressors
ISO 4126-1:2013, Safety devices for protection against excessive pressure — Part 1: Safety valves
ISO 4126-1:2013/Amd 1:2016, Safety devices for protection against excessive pressure — Part 1: Safety
valves — Amendment 1
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oSIST prEN ISO 18623-1:2023
ISO/DIS 18623-1:2023(E)
ISO 4413:2010, Hydraulic fluid power — General rules and safety requirements for systems and their
components
ISO 4414:2010, Pneumatic fluid power — General rules and safety requirements for systems and their
components
ISO 7000:2019, Graphical symbols for use on equipment — Registered symbols
ISO 7010:2019, Graphical symbols — Safety colours and safety signs — Registered safety signs
ISO 7010:2019/Amd 1:2020, Graphical symbols — Safety colours and safety signs — Registered safety
signs — Amendment 1
ISO 7010:2019/Amd 2:2020, Graphical symbols — Safety colours and safety signs — Registered safety
signs — Amendment 2
ISO 7010:2019/Amd 3:2021, Graphical symbols — Safety colours and safety signs — Registered safety
signs — Amendment 3
ISO 7010:2019/Amd 4:2021, Graphical symbols — Safety colours and safety signs — Registered safety
signs — Amendment 4
ISO 7010:2019/Amd 5:2022, Graphical symbols — Safety colours and safety signs — Registered safety
signs — Amendment 5
ISO 7010:2019/Amd 6:2022, Graphical symbols — Safety colours and safety signs — Registered safety
signs — Amendment 6
ISO 8573-1:2010, Compressed air — Part 1: Contaminants and purity classes
ISO 8573-2:2018, Compressed air — Contaminant measurement — Part 2: Oil aerosol content
ISO 8573-3:1999, Compressed air — Part 3: Test methods for measurement of humidity
ISO 8573-4:2019, Compressed air — Contaminant measurement — Part 4: Particle content
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 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13732-1:2006, Ergonomics of the thermal environment — Methods for the assessment of human
responses to contact with surfaces — Part 1: Hot surfaces
ISO 13732-3:2005, Ergonomics of the thermal environment — Methods for the assessment of human
responses to contact with surfaces — Part 3: Cold surfaces
ISO 13766-1:2018, Earth-moving and building construction machinery — Electromagnetic compatibility
(EMC) of machines with internal electrical power supply — Part 1: General EMC requirements under typical
electromagnetic environmental conditions
ISO 13766-2:2018, Earth-moving and building construction machinery — Electromagnetic compatibility
(EMC) of machines with internal electrical power supply — Part 2: Additional EMC requirements for
functional safety
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 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by upper
and lower limbs
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