Iso 3834 4 2021
Iso 3834 4 2021
Iso 3834 4 2021
STANDARD 3834-4
Third edition
2021-04
Reference number
ISO 3834-4:2021(E)
© ISO 2021
ISO 3834-4:2021(E)
Contents Page
Foreword......................................................................................................................................................................................................................................... iv
1 Scope.................................................................................................................................................................................................................................. 1
2 Normative references....................................................................................................................................................................................... 1
3 Terms and definitions...................................................................................................................................................................................... 1
4 Use of this document......................................................................................................................................................................................... 1
5 Review of requirements and technical review....................................................................................................................... 1
6 Sub-contracting....................................................................................................................................................................................................... 2
7 Welding personnel.............................................................................................................................................................................................. 2
7.1 General............................................................................................................................................................................................................ 2
7.2 Welders and welding operators................................................................................................................................................ 2
8 Inspection and testing personnel........................................................................................................................................................ 2
8.1 General............................................................................................................................................................................................................ 2
8.2 Non-destructive testing personnel......................................................................................................................................... 2
9 Equipment.................................................................................................................................................................................................................... 3
10 Welding and related activities................................................................................................................................................................. 3
11 Welding consumables...................................................................................................................................................................................... 3
12 iTeh STANDARD PREVIEW
Inspection and testing..................................................................................................................................................................................... 3
13 Non-conformance and corrective actions.................................................................................................................................... 3
(standards.iteh.ai)
14 Quality records........................................................................................................................................................................................................ 3
ISO 3834-4:2021
https://standards.iteh.ai/catalog/standards/sist/651e8037-ad79-4ae5-bf0e-
1030198e6772/iso-3834-4-2021
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
iTeh STANDARD PREVIEW
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/
iso/foreword.html. (standards.iteh.ai)
This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes,
Subcommittee SC 10, Quality management in the ISOfield of welding, in collaboration with the European
3834-4:2021
Committee for Standardization (CEN) Technical Committee CEN/TC 121, Welding and allied processes,
https://standards.iteh.ai/catalog/standards/sist/651e8037-ad79-4ae5-bf0e-
in accordance with the Agreement on technical 1030198e6772/iso-3834-4-2021
cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 3834-4:2005), of which it constitutes a
minor revision.
The main changes compared to the previous edition are as follows:
— editorial revisions;
— in 7.2 and 8.2, update of references to the latest edition of ISO 3834-5.
A list of all parts in the ISO 3834 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.
Official interpretations, where they exist, are available from this page: https://committee.iso.org/sites/
tc44/home/interpretation.html.
1 Scope
This document defines elementary quality requirements for fusion welding of metallic materials both
in workshops and at field installation sites.
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 3834-1, Quality requirements for fusion welding of metallic materials — Part 1: Criteria for the selection
iTeh STANDARD PREVIEW
of the appropriate level of quality requirements
ISO 3834-5:—,1) (standards.iteh.ai)
Quality requirements for fusion welding of metallic materials — Part 5: Documents with
which it is necessary to conform to claim conformity to the quality requirements of ISO 3834-2, ISO 3834-3
or ISO 3834-4 ISO 3834-4:2021
https://standards.iteh.ai/catalog/standards/sist/651e8037-ad79-4ae5-bf0e-
1030198e6772/iso-3834-4-2021
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3834-1 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://w ww.iso.org/obp
— IEC Electropedia: available at http://w ww.electropedia.org/
manufacturer shall affirm its capability to meet all requirements and shall ensure adequate planning of
all quality-related activities.
The review of requirements shall be carried out by the manufacturer to verify that the work content
is within its capability to perform, that sufficient resources are available to achieve delivery schedules
and that documentation is clear and unambiguous. The manufacturer shall ensure that any variations
between the contract and any previous quotation are identified and the purchaser notified of any
programme, cost or engineering changes that can result.
6 Sub-contracting
When a manufacturer intends to use sub-contracted services or activities (e.g. welding, inspection, non-
destructive testing), information necessary to meet applicable requirements shall be supplied by the
manufacturer to the sub-contractor. The sub-contractor shall provide such records and documentation
of her or his work as can be specified by the manufacturer.
A sub-contractor shall work under the order and responsibility of the manufacturer and shall fully
comply with the relevant requirements of this document. The manufacturer shall ensure that the sub-
contractor can comply with the quality requirements as specified.
7 Welding personnel
7.1 General
iTeh STANDARD PREVIEW
The manufacturer shall provide sufficient supervision of the welding production in order to assure that
(standards.iteh.ai)
the welding is carried out in a manner compatible with good workmanship.
8.1 General
The manufacturer shall carry out all inspection and testing as specified.
9 Equipment
Welding equipment shall be available and maintained in proper working order.
11 Welding consumables
The manufacturer shall ensure that appropriate welding consumables are stored and used in accordance
with the supplier's recommendations.