SIST EN ISO 14922:2021

SLOVENSKI STANDARD
oSIST prEN ISO 14922:2020
01-oktober-2020
Vroče brizganje - Zahteve za kakovost za proizvajalce vroče brizganih prevlek -
Sistem zagotavljanja kakovosti (ISO/DIS 14922:2020)
Thermal spraying - Quality requirements for manufacturers of thermal sprayed coatings -
Quality assurance system (ISO/DIS 14922:2020)
Thermisches Spritzen - Qualitätsanforderungen für Hersteller von thermisch gespritzten
Schichten - Qualitätssicherungssystem (ISO/DIS 14922:2020)
Projection thermique - Exigences qualité pour les fabricants de revêtement projeté
thermiquement (ISO/DIS 14922:2020)
Ta slovenski standard je istoveten z: prEN ISO 14922
ICS:
25.220.20 Površinska obdelava Surface treatment
oSIST prEN ISO 14922:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 14922:2020

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oSIST prEN ISO 14922:2020
DRAFT INTERNATIONAL STANDARD
ISO/DIS 14922
ISO/TC 107 Secretariat: KATS
Voting begins on: Voting terminates on:
2020-08-27 2020-11-19
Thermal spraying — Quality requirements for
manufacturers of thermal sprayed coatings — Quality
assurance system
ICS: 25.220.20
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
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 14922:2020(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 2020

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oSIST prEN ISO 14922:2020
ISO/DIS 14922:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2020 – All rights reserved

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oSIST prEN ISO 14922:2020
ISO/DIS 14922:2020(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Quality requirements for manufacturers and thermal sprayed coatings .3
4.1 General . 3
4.2 Quality requirements for the manufacturer . 3
4.2.1 General. 3
4.2.2 Requirements for the quality assurance — Selection of the quality
assurance level. 4
4.3 Selection of the quality requirements for the thermal sprayed coating — Quality
Requirement Classes . 4
4.3.1 General. 4
4.3.2 Quality Requirement Class QRC1. 4
4.3.3 Quality Requirement Class QRC2. 4
4.3.4 Quality Requirement Class QRC3. 4
4.4 Selection of the quality requirements for thermal spraying . 4
4.5 Designation of the Quality Assurance Level . 5
Annex A (informative) Flow diagram for selection of thermal spraying quality requirements .6
Annex B (normative) Requirements to the factory according to QAL-C; S; E .8
Annex C (normative) Quality elements and measures covering the quality assurance
according to the comprehensive, standard, and elementary requirements .10
Bibliography .24
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oSIST prEN ISO 14922:2020
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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 107, Metallic and other inorganic coatings.
This first edition cancels and replaces the first editions of ISO 14922:1999, Parts 1 to 4, which have
been technically revised.
The main changes compared to the previous edition are as follows:
— Consolidation into one part;
— Requirements for the manufacturer correspond to those of the parts;
— Weighting of requirements with +++ / ++ / + updated, now normative;
— Separation of requirements:
— Component (QRC);
— Manufacturer (QAL C, S, E);
— Quality assurance requirements in three assessment groups (comprehensive requirements,
standard (normal) requirements, elementary requirements) in direct comparison in 3 columns
(analogue ISO 5817);
— Dependence on ISO 9001 eliminated;
— Decision on QAL C, S, E by customer or manufacturer itself;
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 14922:2020
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Introduction
Thermal spraying processes are widely applied for producing industrial products and are mainly
applied for preventive protection of surfaces. The application may take place both within the workshop
as well as on site. Measures for the maintenance of worn coatings or of surfaces on components are
also in the field of use. Thermal spraying can be found in all industries but especially aerospace,
stationary gas turbine, automotive industry, machinery construction, printing and chemical industry,
oil extraction and refining fluid control, for medical purposes and for steel construction in the field of
off-shore and on-shore, etc. Usually coatings are applied for anticorrosive and/or anti-wear purposes,
high temperature protection and against chemical attack or for aesthetic or electrical reasons too.
Thermal spraying belongs to the so called special processes, where the quality of the coating cannot
be unambiguously determined by testing without damaging the component. For an adequate use of
thermal sprayed coatings and in order to avoid quality or cost intensive problems when manufacturing
and during service time, conditions and processes must be controlled. Therefore, a functional quality
assurance system shall be available for the coating factory, if necessary, in additional to a quality
management system (e.g. according to ISO 9001).
This ISO 14922 deals with different levels of quality requirements (comprehensive level C, standard
level S and elementary level E). These requirements can be defined by the customer’s design engineering
relating to the thermal sprayed coating or to the component.
In order to avoid coordination problems between the contracting parties, it is essential to indicate the
“edition of the standard” according to which a contract was defined.
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oSIST prEN ISO 14922:2020
DRAFT INTERNATIONAL STANDARD ISO/DIS 14922:2020(E)
Thermal spraying — Quality requirements for
manufacturers of thermal sprayed coatings — Quality
assurance system
1 Scope
This International standard specifies quality requirements for manufacturers of thermal sprayed
coatings, which should ensure quality assurance for activities in the field of production.
Note It is independent of the availability of a quality management system according to the ISO 9000,
ISO 14000 series and ISO 45001, which deals with the concept and organization of the quality management.
This standard should be applied for thermal spraying including all the pre- and post-treatments of
the whole coating process for new parts, for repairs and maintenance (e.g. after service) at the
workshop or on site. This standard defines the quality requirements, which are of importance for the
manufacturing route.
The main elements of the quality assurance of the entire thermal spraying process for different applications
according to Quality Assurance Levels C, S and E are listed in the Annex of this standard. They can be used
to check the proper function of the quality assurance system when applying a quality audit.
This standard specifies requirements, tests and the scope of tests when qualifying the manufacturer.
The specific requirements of the qualifying procedure according to the Quality Assurance Level C, S
or E can be given by the general requirements of the quality management system of the company or a
contract.
This standard together with the relevant Quality Level can be stipulated by the customer/designer, in
order to require a minimum of quality assurance measures for the manufacturing of his component.
Requirements specified in this standard can be helpful when a quality assurance system is to be
established.
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 1463:2003, Metallic and oxide coatings — Measurement of coating thickness — Microscopical method
ISO 2178:2016, Non-magnetic coatings on magnetic substrates — Measurement of coating thickness —
Magnetic method
ISO 4624:2016, Paints and varnishes — Pull-off test for adhesion
ISO 9712:2012, Non-destructive testing — Qualification and certification of NDT personnel
ISO 12690:2010, Metallic and other inorganic coatings — Thermal spray coordination — Tasks and
responsibilities
ISO 14916:2017, Thermal spraying — Determination of tensile adhesive strength
ISO 14917:2017, Thermal spraying — Terminology, classification
ISO 14918:2018, Thermal spraying — Qualification testing of thermal sprayers
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ISO 14923:2003, Thermal spraying — Characterization and testing of thermally sprayed coatings
EN 1395-1, Thermal spraying — Acceptance inspection of thermal spraying equipment — Part 1: General
requirements
EN 15520, Thermal spraying — Recommendations for constructional design of components with thermally
sprayed coatings
EN 15648, Thermal spraying — Component related spray procedure qualification
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 14917 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
contract
requirements for the coating or for the component to be coated agreed between the contracting parties
for example, by specification, drawing, manufacturing instructions, etc
3.2
special process
a manufacturing process, in this case thermal spraying including surface preparation and certain post-
treatments, where the results of manufacturing cannot be confirmed entirely by subsequent quality
and product tests and where for example manufacturing faults might only be shown after putting the
product into service
3.3
coating manufacturer
person or organization responsible for thermal spraying production
3.4
Qualified persons
3.4.1
thermal spraying coordinator
a person, who is trained and qualified e.g. according to ISO 12690 or equivalent
Note 1 to entry: Such a training may be the ETSS (European Thermal Spraying Specialist) according to the EWF
Guideline 459.
3.4.2
thermal sprayer
a person, who is trained and qualified according to ISO 14918 or equivalent or qualified by job reference
specimens for a particular application
Note 1 to entry: Such a training may be the ETS (European Thermal Sprayer) according to the EWF Guideline 507.
3.5
component
a part, component, structure or construction, that is partially or entirely covered by a thermal
sprayed coating
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3.6
Quality Assurance Level
QAL
systematic measures in the field of production/manufacturing, for maintaining the internally or
externally required quality of the production/manufacturing processes with regard to the components
3.7
Quality Requirement Class
QRC
defines requirements for the coating and relates to its importance for the proper function and safety of
the component
3.8
Factory Quality Control
FQC
an internal functioning unit of the company which is independent of the production unit and which is
responsible for keeping the intended or required quality guidelines; this may be ensured by quality audits.
3.9
Thermal Spray Procedure Specification
TSPS
instructions for thermal spraying including any necessary parameter; instructions for pre- and post-
treatment can be part of the thermal spray procedure specification
4 Quality requirements for manufacturers and thermal sprayed coatings
4.1 General
Using this standard, the quality requirements for the manufacturer for thermal spraying can be selected
in such a way that they fulfil the requirements for the component to be coated. Using the clauses of this
standard mentioned below the appropriate level shall be selected according to the importance of the
thermal spray coating for the function and safety of the component.
4.2 Quality requirements for the manufacturer
4.2.1 General
Planned manufacturing, an adequate control, and testing of the manufacturing are sufficient measures
in order to ensure the required function of components with thermal sprayed coatings. The establishing
of an adequate quality assurance system is an appropriate measure for a successful production and
completion in the time schedule and serves to avoid reworks or other additional measures.
In general, the manufacturer establishes the quality assurance system according to the components to
be coated and to the requirements of the coatings.
Different requirements, which form the basis of establishing and defining a quality assurance system
for thermal spraying are listed in the normative Annex C according to level C, S and E.
Audits, which can be executed by an external test organization or internally by a department (FQC)
independent from the production, shall safeguard the functionality of the system and shall check that
the stipulated conditions are maintained.
It is a task and responsibility of the company’s executive officers to establish a regular cycle for carrying
out external or internal quality assurance audits according to the rules.
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4.2.2 Requirements for the quality assurance — Selection of the quality assurance level
The appropriate quality assurance level (QAL) C; S or E can be selected in relation to the Quality
Requirement Class (QRC), which is given by the required properties of the sprayed coating and its
importance for the proper function and safety of the component. For details see 4.4.
The requirements of the factory related to the quality assurance level are:
— Quality requirements for the manufacturer according to Quality Assurance Level C: Comprehensive
quality requirements (QAL-C);
— Quality requirements for the manufacturer according to Quality Assurance Level S: Standard quality
requirements (QAL-S);
— Quality requirements for the manufacturer according to Quality Assurance Level E: Elementary
quality requirements (QAL-E).
4.3 Selection of the quality requirements for the thermal sprayed coating — Quality
Requirement Classes
4.3.1 General
The Quality Requirement Class (QRC) depends on the requirements of the sprayed coating and its
importance for the proper function and safety of the component. It can be required by the customer, by
an agreement between the contracting parties or by a general determination of the executing company
itself. The specific level of the requirements is specified as follows.
4.3.2 Quality Requirement Class QRC1
Coatings of QRC1 are such coatings, where the function of the coating performs a main element of the
design and which has a decisive influence on the function of the component. In the case of its failure
under service conditions the function of the component or of a main part of it will be lost.
4.3.3 Quality Requirement Class QRC2
Coatings of QRC2 are such coatings, which support the function of a component. In the case of its failure
under service conditions the function of the component or of a main part of it will be impaired, however
a safe service is safeguarded for a certain but limited time.
4.3.4 Quality Requirement Class QRC3
Coatings of QRC3 are such coatings, where the function of a component does not depend on the
functionality of the coating. In the case of its failure under service conditions the function of the
component or of a main part of it will not be impaired.
4.4 Selection of the quality requirements for thermal spraying
In general components which have a QRC of 1 are likely to require the manufacturer to use a QAL of
C whereas those of a QRC of 2 or 3 may require a QAL of S or E. However, this shall be decided by an
assessment of the function of the coatings and the complexity of their production. The QAL may for
instance be upgraded where repair is very difficult or downgraded if the required coating is very
insensitive to process variations. Annex A presents an informative flow chart when defining the
requirements.
Annex B gives normative instructions regarding the importance of different elements for the quality
assurance for the different systems C, S, and E.
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The normative Annex C specifies the requirements according to the quality assurance elements for
the quality assurance system comprehensive requirements, standard (normal) requirements, and
elementary requirements.
4.5 Designation of the Quality Assurance Level
The designation of the required Quality Assurance System shall relate to this standard and to the status
of the requirements. The requirements are to be specified:
— in case of comprehensive requirements: ISO 14922-C;
— in case of standard (normal) requirements: ISO 14922-S;
— in case of elementary requirements: ISO 14922-E.
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Annex A
(informative)

Flow diagram for selection of thermal spraying quality
requirements
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Figure A.1 — Flow diagram for selection of thermal spraying quality requirements
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Annex B
(normative)

Requirements to the factory according to QAL-C; S; E
Requirements to the factory according to QAL-C; S; E, see Table B.1.
Table B.1 — Requirements to the factory according to QAL-C; S; E
Code Quality elements - requirements C S E
1 Contract review +++ ++ +
2 Design review (safe coatability) +++ ++ +
3 Subcontracting +++ ++ +
4 Personal qualification and training (subject and safety related) +++ +++ ++
4.1 Personal qualification Thermal sprayer (ISO 14918, job reference speci- +++ +++ +
c
men )
4.2 Personal qualification Thermal spraying coordination (ISO 12690) +++ ++ +
5.1 Personal qualification for inspection in general +++ ++ +
5.2 Personal qualification. Inspection personnel (ISO 9712 / EN 473, if ap- +++ ++ +
plicable)
b
Procurement (materials, tools) +++ ++ +
6.1 Equipment for production (machines, blasting and spray equipment,
equipment for post treatments, cranes, lifting devices etc.)
b
6.2 Description of the equipment +++ ++ +
6.3 Suitability of the equipment (EN 1395) +++ ++ +
b
6.4 New equipment (EN 1395) +++ ++ +
b
7 Maintenance of equipment (planning, execution) +++ ++ +
8 Health and environmental aspects +++ +++ +++
9 Process control, work preparation, procurement of spray and auxiliary +++ ++ +
material, production course, testing, supporting services (maintenance,
dispatch)
9.1 Production planning, work sequence plan +++ ++ +
9.2 Establishing of thermal spray procedure specification (TSPS) +++ ++ +
9.3 Qualifying of the TSPS by a procedure qualification or by experience +++ ++ +
9.4 Work instruction for surface preparation and post treatments +++ ++ +
9.5 Establishing of test plan, determination of test procedures, scope of testing +++ ++ +
c
10.1 Identification of the spray material +++ +++ ++
10.2 Storage and handling of thermal spray material +++ ++ ++
Products delivered by the customer
11.1 Testing of incoming material (identification, completeness, damages, dif- +++ +++ ++
ferences of contract conditions) (complaint management)
NOTE  +++ = Comprehensive requirements; ++ = Standard requirements; + = elementary requirements; - = No deliver proof
necessary.
a
Job reference specimen shall be applied for specific applications only.
b
Belongs to ISO 9001, shall be checked only, when not audited by ISO 9001.
c
Usually comparison of supply instructions inclusive data sheet with order instructions and the designation on the
package. A batch testing can be necessary in special cases only or in case of contract requirements.
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Table B.1 (continued)
Code Quality elements - requirements C S E
b
11.2 Storage and handling of packing and dispatch +++ ++ +
12.1 Testing before thermal spraying +++ +++ ++
12.2 Inspection during thermal spraying +++ ++ +
12.3 Testing after thermal spraying +++ ++ +
12.4 Status of testing, in time documentation of finished works and testing +++ ++ +
b
13 Test equipment calibration +++ ++ +
14 Management of defective products +++ +++ +
b
15 Corrective measures in the case of inadmissible imperfections +++ ++ +
b
16 Marking and tracing back +++ ++ +
17 Quality report, establishing, archive +++ ++ +
NOTE  +++ = Comprehensive requirements; ++ = Standard requirements; + = elementary requirements; - = No deliver proof
necessary.
a
Job reference specimen shall be applied for specific applications only.
b
Belongs to ISO 9001, shall be checked only, when not audited by ISO 9001.
c
Usually comparison of supply instructions inclusive data sheet with order instructions and the designation on the
package. A batch testing can be necessary in special cases only or in case of contract requirements.
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Annex C
(normative)

Quality elements and measures covering the quality assurance
according to the comprehensive, standard, and elementary
requirements
Quality elements and measures covering the quality assurance, see Table C.1.
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Table C.1 — Quality elements and measures covering the quality assurance
Quality ele- Standard require-
Code Comprehensive requirements Elementary requirements
ments ments
1 Contract and The factory’s management shall review the contractual requirements and the design data. All information necessary to carry out the
design review - manufacturing shall be available prior to the commencement of the work. The factory’s management shall affirm the capability by a
General confirmation to meet all thermal spraying contract requirements. An adequate planning of all activities related to manufacturing, test-
ing and quality assurance shall be ensured.
1 Contract review The contract review carried out by the factory’s
management serves to confirm, that the re-
quirements of the contract can be fulfilled, that
sufficient technical and organizational resourc-
es are available, spray coatings of the required
quality can be produced, and the time schedule
can be kept and that the requirements are un-
ambiguously defined. The factory’s management
should ensure that any variations between the
contract and previous tender documentation are
identified and that the client is notified of
...