SIST EN IEC 62309:2025

SLOVENSKI STANDARD
01-marec-2025
Zagotovljivost novih izdelkov, ki vsebujejo rabljene dele, in izdelkov s podaljšano
življenjsko dobo (IEC 62309:2024)
Dependability of new products containing reused parts and life-extended products (IEC
62309:2024)
Zuverlässigkeit von Produkten mit wieder verwendeten Teilen - Anforderungen an
Funktionalität und Prüfungen (IEC 62309:2024)
Sûreté de fonctionnement des produits contenant des composants réutilisés - Exigences
pour la fonctionnalité et les essais (IEC 62309:2024)
Ta slovenski standard je istoveten z: EN IEC 62309:2025
ICS:
03.120.01 Kakovost na splošno Quality in general
21.020 Značilnosti in načrtovanje Characteristics and design of
strojev, aparatov, opreme machines, apparatus,
equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62309

NORME EUROPÉENNE
EUROPÄISCHE NORM January 2025
ICS 03.120.30; 21.020 Supersedes EN 62309:2004
English Version
Dependability of new products containing reused parts and life-
extended products
(IEC 62309:2024)
Sûreté de fonctionnement des produits neufs contenant des Zuverlässigkeit von Produkten mit wieder verwendeten
composants réutilisés et des produits à durée de vie Teilen und Produkten mit verlängerter Gebrauchsdauer
prolongée (IEC 62309:2024)
(IEC 62309:2024)
This European Standard was approved by CENELEC on 2025-01-08. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62309:2025 E
European foreword
The text of document 56/2057/FDIS, future edition 2 of IEC 62309, prepared by TC 56 "Dependability"
was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-01-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-01-31
document have to be withdrawn
This document supersedes EN 62309:2004 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62309:2024 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 62402:2019 NOTE Approved as EN IEC 62402:2019 (not modified)
ISO 9000:2015 NOTE Approved as EN ISO 9000:2015 (not modified)
IEC 60300-1 NOTE Approved as EN IEC 60300-1
IEC 60300-3-1:2003 NOTE Approved as EN 60300-3-1:2004 (not modified)
ISO 9001:2015 NOTE Approved as EN ISO 9001:2015 (not modified)
IEC 60300-3-14:2004 NOTE Approved as EN 60300-3-14:2004 (not modified)
IEC 63000:2016 NOTE Approved as EN IEC 63000:2018 (not modified)
IEC 61709:2017 NOTE Approved as EN 61709:2017 (not modified)
IEC 60706-5:2007 NOTE Approved as EN 60706-5:2007 (not modified)
IEC 61649:2008 NOTE Approved as EN 61649:2008 (not modified)

IEC 62309 ®
Edition 2.0 2024-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Dependability of new products containing reused parts and life-extended

products
Sûreté de fonctionnement des produits neufs contenant des composants

réutilisés et des produits à durée de vie prolongée

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 03.120.30, 21.020 ISBN 978-2-8327-0074-7

– 2 – IEC 62309:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 12
4 Requirements for products containing reused parts . 12
4.1 Process and decision flows . 12
4.2 Functional properties and quality . 13
4.3 Environmental issues . 14
4.4 Safety . 14
4.5 Remaining working life . 14
4.6 Traceability . 14
5 Reconditioning . 15
5.1 Reconditioning of parts . 15
5.2 Dismantling and restoration . 15
6 Qualification testing for products containing reused parts . 15
6.1 Evaluation of current status . 15
6.2 Reliability assessment . 15
6.3 Final inspection and testing . 16
7 Warranty and documentation . 16
7.1 Useful life, failure rate, warranty period . 16
7.2 Documentation . 16
7.2.1 Customer documentation . 16
7.2.2 Internal documentation . 16
7.3 Product compliance and control . 17
Annex A (normative) Additional declarations for life extension . 18
A.1 Assurance, system of assurance, and testing . 18
A.2 Final product declared as "new product containing reused parts" . 19
A.3 Final product declared as "refurbished" . 20
A.4 Products declared as "life extended" . 20
A.5 Final product declared as "updated" . 21
A.6 Final product declared as "upgraded" . 22
A.7 Final product declared as "second-hand" . 22
Annex B (informative) Dependability aspects . 24
B.1 Maintenance and repair of products . 24
B.2 Reliability of reused parts . 25
B.2.1 General . 25
B.2.2 Design stage considerations . 25
B.3 Design documentation . 26
B.4 Design for reuse . 27
B.4.1 General . 27
B.4.2 Manufacturing stage decisions . 28
B.4.3 Use stage decisions. 28
B.4.4 Recycling and disposal decisions (end-of-life, EOL) . 28

IEC 62309:2024 © IEC 2024 – 3 –
B.5 Economic aspects . 28
B.6 Lifetime diagram . 29
Annex C (informative) Example with QAGAN parts . 30
C.1 Modules considered for reuse . 30
C.2 The optical system . 30
C.3 The electric motor . 30
C.4 The voltage supply . 31
C.4.1 General . 31
C.4.2 Solder joints . 31
C.4.3 Power transistors . 31
C.4.4 Non-solid electrolyte capacitors . 31
C.4.5 Varistors . 31
C.4.6 The memory PWA . 31
C.4.7 EPROMs. 32
C.4.8 Connectors . 32
C.5 Conclusion . 32
Bibliography . 33

Figure 1 – Life extension for products, parts, and material . 13
Figure 2 – Principal decision flow considering parts . 13
Figure B.1 – Example for determination of the remaining working life of parts . 25
Figure B.2 – Lifetime diagram . 29

Table A.1 – Different aspects of product life . 18
Table B.1 – Assignment of "level of detail for product" to "design aspects" . 27

– 4 – IEC 62309:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DEPENDABILITY OF NEW PRODUCTS CONTAINING
REUSED PARTS AND LIFE-EXTENDED PRODUCTS

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 62309 has been prepared by IEC technical committee 56: Dependability. It is an
International Standard.
This second edition cancels and replaces the first edition published in 2004. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the previous Annex A has been separated into Annex B (Dependability aspects) and
Annex C (Example with QAGAN parts);
b) a new normative Annex A has been written with expansion of lifecycle activities, to describe
extending the useful life by refurbishment, life extension, updating, upgrading and second-
hand use;
c) revision of Figure 1 accordingly;

IEC 62309:2024 © IEC 2024 – 5 –
d) minor editorial alignments throughout the document;
e) the abbreviation "quagan" has been changed "QAGAN" to reflect more contemporary use.
The text of this International Standard is based on the following documents:
Draft Report on voting
56/2057/FDIS 56/2073/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
– 6 – IEC 62309:2024 © IEC 2024
INTRODUCTION
st
The marketplace for products in the 21 century is a rapidly changing one, with increased speed
of technological growth, and new pressures on environmental sustainability as humanity's
demand for ecological resources currently far exceeds what the Earth can regenerate in the
same timeframe.
Owing to the improving quality of manufacturing, most parts have been manufactured with a life
expectancy far longer than the user needs.
Technological changes are also making products more reliable. However, commercial
pressures and legislation changes are leading to an increased rate of technological change,
resulting in a difficulty in obtaining supplies, spares and or support for the superseded parts [a
discipline known as obsolescence management (see IEC 62402 [1] )], and the need to upgrade
systems before all their parts have reached their life expectancy.
The disposal of products and their component parts, which can be potentially useful, is fuelling
the cycle of waste and the overuse of finite materials.
It is unlikely that the speed of technological growth can be slowed, or significant changes can
be made to user needs. However, what can be done is to increase the reuse of parts that have
not reached their life expectancy. This document addresses this goal to reduce waste by reusing
parts, and the additional benefits that come with reusing parts.
This document provides customers with dependability assurance when manufacturers are
producing new products containing previously used parts. The main concept is to qualify the
reused parts to ensure that the product under consideration will fulfil the requirements for a
product containing only new parts. The reused parts can then be declared QAGAN (qualified-
as-good-as-new) and used interchangeably with new parts in the product.
This document firstly describes, in Clauses 4 to 7, requirements for qualification of reuse of
parts in new products. A QAGAN part is qualified only for a specific application, often the same
or similar to that for which it was previously used. This means that QAGAN parts are not
declared as qualified for general use.
QAGAN parts are already type approved for their original application. The declaration QAGAN
certifies that a reused part that has previously been qualified for use in a specific product has
been checked that it has not deteriorated to a degree that it cannot be used in new products. A
new product containing QAGAN parts is tested only to the same extent as if it contained only
new parts.
Secondly, in Clauses A.3 to A.7, this document describes the life extension of products already
in use. In most cases, life extension can be made using new components, new parts, or QAGAN
parts that have been qualified for the specific application.
___________
Numbers in square brackets refer to the Bibliography.

IEC 62309:2024 © IEC 2024 – 7 –
Reuse of parts and materials is one way to save resources. Another way is to extend the useful
life of products as described in Annex A, extending the useful life by refurbishment, life
extension, updating, upgrading or second-hand use. These concepts are defined and the
requirements for using the term QAGAN with reference to this document are stated. This
document expresses guidance to support the circular economy and anticipates application by
organisations to enable, permit and encourage reuse of functional parts. This document
envisages that the item, the subject under consideration, which attracts the declaration or
designation "QAGAN" may be an individual part, component, device, or functional unit. This
document does not cover reused materials or large structures and large systems, nor does it
cover software products, concepts, and ideas.

– 8 – IEC 62309:2024 © IEC 2024
DEPENDABILITY OF NEW PRODUCTS CONTAINING
REUSED PARTS AND LIFE-EXTENDED PRODUCTS

1 Scope
This International Standard introduces the concept to check the reliability and functionality of
reused parts and their usage within new products. It also provides information and criteria about
the assurance [for example, testing and analysis, required for products containing reused parts,
which are declared "qualified-as-good-as-new" (QAGAN)] relative to the designed life of the
product.
This document specifies requirements to be satisfied before making a declaration or applying a
designation of QAGAN. This document also gives guidance to support any organisation that
makes declarations about dependability of products containing reused parts.
In this document, the term "product" covers electrical, electro-mechanical, mechanical parts or
hardware that can contain software.
"Qualified-as-good-as-new" (QAGAN) does not apply to reused materials or large structures
and large systems, nor does it cover software products, concepts, and ideas.
The purpose of this document is to ensure by tests and analysis that the reliability and
functionality of a new product containing reused parts is comparable to a product that contains
only new parts. This would justify the manufacturer granting the next customer the full warranty
of the product with "qualified-as-good-as-new" (QAGAN) parts.
NOTE This document can also be applied in producing product-specific standards by technical committees
responsible for an application sector.
Annex A describes extending useful life by refurbishment, updating, upgrading, maintenance
and used as second-hand. These concepts are defined and the requirements for using the term
with reference to this document are stated.
2 Normative references
There are no normative references in this document.
3 Terms, definitions and abbreviated terms
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp

IEC 62309:2024 © IEC 2024 – 9 –
3.1 Terms and definitions
3.1.1
process
set of interrelated or interacting activities that use inputs to deliver an intended result
Note 1 to entry: Whether the "intended result" of a process is called output, product or service depends on the
context of the reference.
Note 2 to entry: Inputs to a process are generally the outputs of other processes and outputs of a process are
generally the inputs to other processes.
Note 3 to entry: Two or more interrelated and interacting processes in series can also be referred to as a process.
Note 4 to entry: Processes in an organization are generally planned and carried out under controlled conditions to
add value.
Note 5 to entry: A process where the conformity of the resulting output cannot be readily or economically validated
is frequently referred to as a "special process".
Note 6 to entry: This constitutes one of the common terms and core definitions for ISO management system
standards given in Annex SL of the Consolidated ISO Supplement to the ISO/IEC Directives, Part 1. The original
definition has been modified to prevent circularity between process and output and Notes 1 to 5 to entry have been
added.
[SOURCE: ISO 9000:2015, 3.4.1]
3.1.2
product
output of an organization that can be produced without any transaction taking place between
the organization and the customer
Note 1 to entry: Production of a product is achieved without any transaction necessarily taking place between
provider and customer but can often involve this service element upon its delivery to the customer.
Note 2 to entry: The dominant element of a product is that it is generally tangible.
Note 3 to entry: Hardware is tangible, and its amount is a countable characteristic (e.g., tyres). Processed materials
are tangible, and their amount is a continuous characteristic (e.g., fuel and soft drinks). Hardware and processed
materials are often referred to as goods. Software consists of information (3.8.2) regardless of delivery medium (e.g.,
computer programme, mobile phone app, instruction manual, dictionary content, musical composition copyright,
driver's license).
[SOURCE: ISO 9000:2015, 3.7.6]
3.1.3
new product
product as a whole, including all of its constituent parts, that has not yet been put into normal
use
Note 1 to entry: A new product can contain one or more qualified-as-good-as-new (QAGAN) parts.
3.1.4
qualified-as-good-as-new, adj
QAGAN
used on one or more occasions, and qualified, fit for purpose and as dependable as new parts,
for the as-new designed life (ANDL) of a product
Note 1 to entry: QAGAN parts differ from a second-hand part in that it is not just a re-use, but it is also reconditioned
and subjected to fully defined and documented quality assurance prior to re-use. The necessary level of
documentation and quality assurance depends on the application and the market requirements.
Note 2 to entry: In IEC 62309:2004, the abbreviation was "quagan". Now changed to "QAGAN" to reflect more
contemporary use.
– 10 – IEC 62309:2024 © IEC 2024
3.1.5
useful life
time interval, from first use until user requirements are no longer met, due to
economics of operation and maintenance, or obsolescence
Note 1 to entry: In this context, "first use" excludes testing activities prior to hand-over of the item to the end-user.
Note 2 to entry: In this document, user requirements include technical performance defining the limiting state.
[SOURCE: IEC 60050-192, 192-02-27, modified – Note 2 to entry has been added.]
3.1.6
new designed life
NDL
intended life of a product containing only new parts for the first use within a specific set of
operating conditions
Note 1 to entry: The new designed life can depend on the usage of the product, market requirements, efficiency,
economy, technology, etc.
3.1.7
as-new designed life
ANDL
intended life of a product containing at least one reused part for use within a specific set of
operating conditions
Note 1 to entry: The NDL and the ANDL need not be of equal length nor be in any set ratio, but it is desirable that
the ANDL should not be less than the NDL.
3.1.8
remaining working life
duration of a time interval from a given instant of time to the instant of time when
the limiting state of the part is reached
3.1.9
reuse
use of a part that has already served as constituent of a product, after disassembling, as
constituent of another product
3.1.10
recycling
any operation by which waste products are reprocessed into products, product parts, materials
or substances whether for the original or other purposes
Note 1 to entry: It includes the reuse, the reprocessing of material, but does not include the energy recovery and
reprocessing into materials that are to be used as fuels or for back-filling operations.
[SOURCE: IEC TR 62635:2012, 3.16]

IEC 62309:2024 © IEC 2024 – 11 –
3.1.11
life extension
process applied under the responsibility of the manufacturer to extend the useful life of a used
product, while maintaining basic safety and essential requirements
Note 1 to entry: Life extension can include activities such as modifying specified life limitations, exchanging life-
limited parts with new or improved parts, or updating software and firmware to versions with a longer useful life, to
produce a life-extended product. When performing life extension, regulatory submissions to national authorities can
apply.
Note 2 to entry: The intention of life extension of a product is the extension of the expected useful life, defined by
the manufacturer under specified conditions, to ensure that such kinds of life extended products fulfil basic safety
and essential requirements.
Note 3 to entry: The manufacturer may authorize other companies to perform life extension.
3.1.12
refurbishment
process applied under the responsibility of the refurbisher to restore used parts, equipment,
systems or sub-assemblies to basic safety and essential performance comparable to when new
with the intention to extend the useful life
Note 1 to entry: Refurbishment can include activities such as repair, rework, replacement of worn parts, and update
of software/hardware. When refurbishment is performed, regulatory submissions to national authorities can apply
before a product is placed on the national market.
Note 2 to entry: Refurbishment according to this document is, for example, not meant when a product has been
shown on a trade fair without use and then polished up for selling.
Note 3 to entry: The intention of refurbishment of a product is the extension of the expected useful life, defined by
the manufacturer under specified conditions, to ensure that such kinds of refurbished products fulfil basic safety and
essential requirements.
Note 4 to entry: The original manufacturer may authorize other companies to perform refurbishment.
3.1.13
update
process applied under the responsibility of the manufacturer to make the functionality of a used
product compatible with new products of the same type, while maintaining basic safety and
essential requirements
Note 1 to entry: Update can include activities such as making the appearance, performance and functions
compatible with a new product of the same type. It is important when updating to consider the status of regulatory
submissions to national authorities before an updated product is placed on the national market.
Note 2 to entry: The intention of update of a product is the extension of the expected useful life, defined by the
manufacturer under specified conditions to ensure that such kind of updated products fulfils basic safety and essential
performance.
Note 3 to entry: The manufacturer may authorize other companies to perform updates.

– 12 – IEC 62309:2024 © IEC 2024
3.1.14
upgrade
process of enhancing the functionality, performance, capacity, or aesthetics of a product
Note 1 to entry: An upgrade to a product can involve changes to its software, firmware and/or hardware.
Note 2 to entry: Process applied under the responsibility of the manufacturer to improve the functionality of a used
product exceeding the original specifications, while maintaining basic safety and essential requirements.
Note 3 to entry: Upgrade can include activities such as significantly improving the appearance, performance and
functions compared with the original specification of the product. When performing an upgrade, regulatory
submissions to national authorities can apply before the upgraded product is placed on the national market.
Note 4 to entry: The intention of upgrade of a product is the extension of the expected useful life, defined by the
manufacturer under specified conditions, to ensure that such kinds of upgraded products fulfil basic safety and
essential requirements.
Note 5 to entry: The manufacturer may authorize other companies to perform upgrades.
[SOURCE: EN 45554:2020, 3.1.5, modified – note 2 has been modified. Note 3 to Note 5 to
entry have been added]
3.1.15
reconditioning
refurbishment and/or repair of parts to obtain the approximate original design condition
[SOURCE: ISO 3977-9:1999, 3.92
3.1.16
disposability
ability of an item to be fragmented into different waste categories
3.1.17
B life
L percentiles
age at which a given percentage of items have failed
Note 1 to entry: "B " life is the age at which 10 % of items (e.g., bearings) have failed. Sometimes it is denoted by
the L (life) value. B lives may be read directly from Weibull plot or determined more accurately from the Weibull
equation. The age at which 50 % of the items fail, the B life, is the median time to failure.
[SOURCE: IEC 61649:2008, 3.1.11]
3.2 Abbreviated terms
QAGAN qualified-as-good-as-new
NDL new designed life
ANDL as-new designed life
PWA printed wiring assemblies
EOL end-of-life
EPROM erasable programmable read-only memory
4 Requirements for products containing reused parts
4.1 Process and decision flows
A product can be made up of new and reused parts (see Figure 1).
Process and decision flows concerning QAGAN parts are illustrated in Figure 1 and Figure 2.

IEC 62309:2024 © IEC 2024 – 13 –
Annex A (normative) describes how additional declarations for life extension are applied.
Annex B (informative) describes dependability aspects to consider for reused parts.
Annex C (informative) provides examples with QAGAN parts.

Figure 1 – Life extension for products, parts, and material
Figure 2 gives a decision flow, showing how QAGAN parts can be incorporated into a product.

Figure 2 – Principal decision flow considering parts
4.2 Functional properties and quality
Products containing reused parts shall meet the same technical standards and, if not otherwise
stated, have the same functionality as a product with only new parts.
QAGAN parts or assemblies that are reused shall be of equal technical specification to those
of the equivalent new ones with respect to form, fit, function and environmental conditions of
operation.
– 14 – IEC 62309:2024 © IEC 2024
QAGAN parts may have minor variations from the specifications of the new part. These
deviations can depend on the kind of product. However, these variations shall be explicitly
stated in the qualification process documentation for the product.
QAGAN parts shall pass the same or equivalent inspection and functional testing that new parts
go through in the product manufacturer's process.
The functionality of products with QAGAN parts shall be verified at least by the same inspection
and function testing as the product with only new parts.
NOTE 1 New application of reused parts or new software versions available requires appropriate re-qualification
and validation.
NOTE 2 The declaration of a part to be QAGAN signals that the reused part satisfies current technical specifications
for new parts, i.e. the old part is of equal technical specification to those of the equivalent new ones with respect to
form, fit, function and environmental conditions of operation.
4.3 Environmental issues
During the process of including QAGAN parts into manufacturing, it shall be ensured that these
reused parts do not in themselves cause more environmental damage than their disposal and
manufacturing of new ones would do. For example, special attention should be given to the
following environmental aspects: energy consumption, hazardous substances and material
recycling.
QAGAN parts can also be used as spare parts to improve the chances of the full utilization of
the product with a long usability with respect to the environment, for example saving resources
even when the cost is equal. After a repair, the product shall be tested in the same way as if a
new part had been used for the repair, before being put into operation.
To reduce the costs of recovering parts that can be used in this way, designers should think
about how the product should be disassembled at the end of its life. The more integrated the
design, the more difficult and expensive it will be to recover the parts.
If the disassembly is easy and cost effective, the quantity of products containing reused parts
can increase.
NOTE Relatively high energy consumption can be regarded as undesirable but can be acceptable, for example,
when the production of new products is either difficult or costly.
4.4 Safety
Products containing reused parts should fulfil current safety and warranty requirements to
comply with current conditions of sale as well as legal requirements.
4.5 Remaining working life
QAGAN parts shall have a remaining working life sufficient for the as-new designed life (ANDL)
of the final product.
4.6 Traceability
To ensure the correct manufacturing of products using reused parts, it is required to establish
adequate traceability and configuration management, including consideration of:
• quality system requirements;
• traceability and marking of QAGAN parts;
• configuration management of QAGAN parts.

IEC 62309:2024 © IEC 2024 – 15 –
This may include proper marking or identification of parts and products, together with records
documenting valid product configurations across parts and product revisions.
There may also be additional traceability requirements needed to make acceptance decisions
for QAGAN parts about their:
• usage history (for example, contamination, stresses, use conditions, etc.);
• compliance and certification status and references.
5 Reconditioning
5.1 Reconditioning of parts
Reconditioning of parts may be permitted.
NOTE QAGAN parts can be reconditioned parts.
5.2 Dismantling and restoration
Products containing reusable parts should be dismantled and the parts should be restored
based on product specific instructions, workmanship standards, and methods.
Housings of parts, suitable for reuse, should be visually intact. Secondary lacquering is allowed.
6 Qualification testing for products containing reused parts
6.1 Evaluation of current status
Procedures shall be applied to evaluate the state of products containing QAGAN parts. The
evaluation can be made by using the manufacturer's data sheet or by life tests of parts or
modules. Proper use of quality management systems can support in controlling the
manufacturing and evaluation process (for example, ISO 9000 [2], IEC 60300-1 [3]).
These procedures may be:
• visual inspections, measurements and function tests such as those performed on products
with only new parts;
• evaluations of running time counters, consumption counters, etc. designed to help decide
whether parts can possibly be reused giving information on the remaining working life (for
example, with characteristic curves like Weibull plots);
• checking whether QAGAN parts of products are visually intact;
• appropriate inspections or testing, for example, X-ray or ultrasonic inspection, of load-
carrying mechanical structures;
• evaluation of the status of software embedded in the QAGAN part, for example, the version,
configuration, and compatibility.
6.2 Reliability assessment
Through analysis or testing, it shall be verified that the failure rate of a product containing
QAGAN parts shall not exceed given expected values that are applicable for a product
containing only new parts or shall not exceed given limits.
Analysis and testing should be designed to ensure that the product containing reused parts
achieves a level of performance and reliability consistent with the product's ANDL (for example,
see IEC 60300-3-1 [4]).
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6.3 Final inspection and testing
Final inspection and testing, including functional testing of products with QAGAN parts, shall
be the same as for products with only new parts.
7 Warranty and documentation
7.1 Useful life, failure rate, warranty period
The declaration that a product contains 'qualified-as-good-as-new' (QAGAN) parts signals that
the product complies with the following criteria for life, failure rate and warranty period:
• the expected life of a product containing QAGAN parts shall correspond at least to the
design life of a product as stated in the specification;
• the failure rate of a product containing QAGAN parts shall not exceed given expected values
which are also applicable for a product containing only new parts, or shall not exceed given
limits;
• the warranty period and terms of warranty shall not be less than for products with only new
parts.
7.2
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