ISO/TS 22499:2024

Technical
Specification
ISO/TS 22499
Second edition
Thermoplastic pipes for the
2024-02
conveyance of fluids — Inspection
of polyethylene butt fusion joints
using phased array ultrasonic
testing
Tubes en matières thermoplastiques pour le transport des
fluides — Contrôle des assemblages par soudage bout à bout
en polyéthylène au moyen de la technique par ultrasons multi-
éléments
Reference number
© ISO 2024
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 2
5 Information required prior to testing . 3
5.1 Items required for procedure.3
5.2 Specific information required by the operator before testing .3
5.3 Written test procedure .3
6 Personnel qualifications . . 3
7 Equipment . 4
7.1 General .4
7.2 Ultrasonic instrument and display .4
7.3 Ultrasonic probes .4
7.4 Scanning mechanisms .4
7.5 Couplant .4
8 Range and sensitivity settings . 5
8.1 Settings . . .5
8.1.1 General .5
8.1.2 Range setting — Test volume .5
8.1.3 Sensitivity setting .6
8.2 Reference sample.7
8.2.1 General .7
8.2.2 Reference block . .7
8.2.3 Reference reflectors .7
8.3 Checking of the settings .7
9 Equipment checks . 7
10 Test procedure . 7
10.1 Procedure qualification .7
10.2 Scan increment .9
10.3 Geometry of the fusion joint tested .9
10.4 Preparation of scanning surfaces .9
10.5 Temperature of fusion joint tested .9
10.6 Testing .9
10.7 Data storage .10
11 Interpretation and analysis of test data .10
11.1 General .10
11.2 Assessing the quality of the test data .10
11.3 Identification of relevant indications .10
11.4 Classification of relevant indications .10
11.5 Determination of location and size of indications .11
11.6 Assessment of indications .11
12 Test report .11
Annexe A (informative) Example of reference reflectors and reference blocks .13
Annexe B (informative) Example procedures for producing imperfections in butt fusion
[17]
joints .16
Bibliography .20

iii
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,
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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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO 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, ISO had not received notice of (a)
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this may not represent the latest information, which may be obtained from the patent database available at
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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 138, Plastics pipes, fittings and valves for the
transport of fluids, Subcommittee SC 5, General properties of pipes, fittings and valves of plastic materials and
their accessories — Test methods and basic specifications.
This second edition cancels and replaces the first edition (ISO/TS 22499:2019), which has been technically
revised.
The main changes are as follows:
— clarification of the definition of "cold fusion" and "lack of fusion";
— revision of the procedure qualification.
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.

iv
Introduction
At the present time, laboratory experiences exist on the use of PAUT for polyethylene BF joints and/or
[1][2][3][4][5]
reference blocks of wall thickness between 8 mm to 100 mm . Field experience on BF joints in
[6]
PE80 and PE100 materials has been reported .
Interlaboratory test has shown that PAUT is a viable method for enhancing the integrity assessment of butt-
[7][16]
fusion joints .
PAUT techniques for cold fusion detection are known to be available. However further research, verification
and experience are needed to transfer the technique into an ISO Standard. This document does not provide
[16]
any information regarding the detection o
...