TS EN IEC 62309
Dependability of new products containing reused parts and life-extended products
IEC 62309:2024 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. 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. 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; d) minor editorial alignments throughout the document; e) the abbreviation “quagan” has been changed “QAGAN” to reflect more contemporary use.
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About This Item
TS EN IEC 62309 is the standard for dependability of new products containing reused parts and of products whose useful life has been extended. It focuses on how reused parts are assessed inside a new product, how reliability and functionality are justified, and how the intended life of the product is taken into account when making that judgement.
Reuse, QAGAN and life-extension concepts
In the technical framework of this standard, reused parts, second-hand use, refurbishment, updating, upgrading, maintenance and related life-extension activities are treated as distinct concepts. The term QAGAN, short for “qualified-as-good-as-new”, is used for cases where a reused part is declared suitable to be treated as equivalent to new under defined conditions. The document defines the context for using that designation; it does not apply it to software products, concepts or ideas, and it also excludes reused materials, large structures and large systems.
The assurance approach used by the document
The standard specifies requirements that must be met before a declaration is made or the QAGAN designation is applied, and it provides information and criteria to support assurance for products containing reused parts. In general technical terms, that assurance is commonly built through a combination of testing, analysis, history-of-use review and functional verification. The objective is to show that a new product containing reused parts is comparable, in reliability and functionality, with a product made only from new parts.
The document also provides guidance for organisations making dependability declarations and explains a technical basis for supporting full warranty to the next customer. This edition supersedes the first edition and is a technical revision; its annex structure has been reorganised to better separate dependability aspects, life-extension activities and the QAGAN example.
- Publication Date: 21.03.2025
- Standard Status: U (Yürürlükteki Standard/Standard)
- Publisher: TSE
- Document Language: en
- ICS Classification: 03.120.30 İstatistiksel Metotların Uygulanması; 21.020 Makina, Cihaz ve Ekipmanların Özellikleri ve Tasarımı
- Pages: 44
- Source Standard: EN IEC 62309:2025
- International Equivalents: EN IEC 62309-EQV; IEC 62309-EQV
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