EN 15339-2:2021

SLOVENSKI STANDARD
01-september-2021
Nadomešča:
SIST EN 15339-2:2007
Vroče brizganje - Varnostne zahteve za opremo za vroče brizganje - 2. del: Plinske
kontrolne enote
Thermal spraying - Safety requirements for thermal spraying equipment - Part 2: Gas
control units
Thermisches Spritzen - Sicherheitsanforderungen für Einrichtungen für das thermische
Spritzen - Teil 2: Gaskontrolleinheiten
Projection thermique - Exigences de sécurité relatives au matériel de projection
thermique - Partie 2 : Unités de régulation de l’alimentation en gaz
Ta slovenski standard je istoveten z: EN 15339-2:2021
ICS:
25.220.20 Površinska obdelava Surface treatment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 15339-2
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2021
EUROPÄISCHE NORM
ICS 25.220.20 Supersedes EN 15339-2:2007
English Version
Thermal spraying - Safety requirements for thermal
spraying equipment - Part 2: Gas control units
Projection thermique - Exigences de sécurité relatives Thermisches Spritzen - Sicherheitsanforderungen für
au matériel de projection thermique - Partie 2 : Unités Einrichtungen für das thermische Spritzen - Teil 2:
de régulation de l'alimentation en gaz Gaskontrolleinheiten
This European Standard was approved by CEN on 7 June 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15339-2:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Gas control units . 5
4.1 Function . 5
4.2 Design . 6
5 Components within a gas control unit . 6
6 Requirements . 7
6.1 General . 7
6.2 Local separation of gas and electric power . 7
6.3 Solid piping . 7
6.4 Leak test. 7
7 Safety standards . 7
8 National rules . 8
Annex A (informative) Examples for design of gas control units . 9
A.1 Simple gas control unit. 9
A.2 Gas control-closed loop control with integrated HMI . 10
A.3 Gas control-closed loop control with separate HMI . 10
A.4 Pressurized enclosures . 11
A.4.1 General . 11
A.4.2 Pressure control . 11
A.4.3 Ventilation . 12
A.5 Oxygen-carrying components in gas control units . 13
A.5.1 General . 13
A.5.2 Conditions favouring an oxygen-induced fire. 13
A.5.3 Measures to ensure safe operation inside the gas control unit . 14
A.5.4 Additional measures . 15
Bibliography . 16

European foreword
This document (EN 15339-2:2021) has been prepared by Technical Committee CEN/TC 240 “Thermal
spraying and thermally sprayed coatings”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2022, and conflicting national standards shall
be withdrawn at the latest by January 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 15339-2:2007.
The main changes compared to the previous edition EN 15339-2:2007 are as follows:
a) the document was editorially reviewed;
b) the Normative references and the Bibliography have been updated;
c) in Annex A, A.5 regarding oxygen-carrying components in gas control units was added.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
1 Scope
This document specifies safety requirements of machines and equipment for thermal spraying, in this
case of gas control units. This document is intended to be used in conjunction with Part 1, which deals
with general aspects when designing, manufacturing, and/or putting in service of machines or
equipment.
Generally the requirements of EU Directive 2014/34/EU are valid for the use of this document.
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.
EN ISO 3821, Gas welding equipment - Rubber hoses for welding, cutting and allied processes (ISO 3821)
EN 560, Gas welding equipment - Hose connections for equipment for welding, cutting and allied processes
EN 561, Gas welding equipment - Quick-action coupling with shut-off valves for welding, cutting and allied
processes
EN ISO 5175-1, Gas welding equipment - Safety devices - Part 1: Devices incorporating a flame (flashback)
arrestor (ISO 5175-1)
EN ISO 5175-2, Gas welding equipment - Safety devices - Part 2: Devices not incorporating a flame
(flashback) arrestor (ISO 5175-2)
EN ISO 4413, Hydraulic fluid power - General rules and safety requirements for systems and their
components (ISO 4413)
EN 13611, Safety and control devices for burners and appliances burning gaseous and/or liquid fuels -
General requirements
EN 15069, Safety gas connection valves for metal hose assemblies used for the connection of domestic
appliances using gaseous fuel
EN 60079-0, Explosive atmospheres - Part 0: Equipment - General requirements (IEC 60079-0)
EN 60079-1, Explosive atmospheres - Part 1: Equipment protection by flameproof enclosures "d"
(IEC 60079-1)
EN 60079-2, Explosive atmospheres - Part 2: Equipment protection by pressurized enclosure "p"
(IEC 60079-2)
EN 60079-10-1, Explosive atmospheres – Part 10-1: Classification of areas - Explosive gas atmospheres
(IEC 60079-10-1)
EN 60204-1, Safety of machinery - Electrical equipment of machines - Part 1: General requirements
(IEC 60204-1)
EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)
EN 61310-1, Safety of machinery - Indication, marking and actuation - Part 1: Requirements for visual,
acoustic and tactile signals (IEC 61310-1)
EN 61310-2, Safety of machinery - Indication, marking and actuation - Part 2: Requirements for marking
(IEC 61310-2)
EN 61496-1, Safety of machinery - Electro-sensitive protective equipment - Part 1: General requirements
and tests (IEC 61496-1)
EN 60079-29-1, Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors
for flammable gases (IEC 60079-29-1)
ISO 1219-1, Fluid power systems and components - Graphical symbols and circuit diagrams - Part 1:
Graphical symbols for conventional use and data-processing applications
ISO 1219-2, Fluid power systems and components - Graphical symbols and circuit diagrams- Part 2:
Circuit diagrams
ISO 2928, Rubber hoses and hose assemblies for liquefied petroleum gas (LPG) in the liquid or gaseous
phase and natural gas up to 25 bar (2,5 MPa) - Specification
ISO 7000-DB, Graphical symbols for use on equipment - Registered symbols
IEC 60417-DB, Graphical symbols for use on equipment
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
4 Gas control units
4.1 Function
Gas control units are designed in order to control and/or close loop control and/or monitor gas flows
which are applied for thermal spraying processes according to EN ISO 14917.
Moreover gas control units can provide further functions such as controlling and/or closed loop
controlling and/or monitoring of:
— current and/or voltage;
— feeding liquid flow volumes or masses (fuel, cooling water);
— other cooling media (air, CO and others);
— wire feed rate velocities;
— various control functions of the spraying process.

Online-Database - It will be updated permanently. Access to the database is on a subscription basis alternatively
for a period of 3, 6, 12, or 24 months. Preview available at https://www.iso.org/obp/ui/#iso:pub:PUB400008:en
4.2 Design
Concerning the art of design and scope of control and closed loop control technique the systems can be
divided into the following main components:
— monitoring or operating (e.g. HMI – Human Machine Interface);
— control logic (e.g. Programmable Logic Controller (PLC unit));
— gas control unit;
— pump system for liquid fuels applied with high velocity oxygen fuel spraying (HVOF);
— pumping and/or conveying and/or monitoring of cooling media.
In any gas control unit all of the above mentioned components or only some of them can be integ
...