ISO/DTS 24399

Thermoplastic pipes for the conveyance of fluids — Inspection of polyethylene butt fusion joints using time of flight diffraction 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 diffraction des temps de vol

General Information

• Status: Not Published
• ICS: 23.040.20 - Plastics pipes
• ICS: 23.040.60 - Flanges, couplings and joints
• Technical Committee: ISO/TC 138/SC 5 - General properties of pipes, fittings and valves of plastic materials and their accessories -- Test methods and basic specifications
• Drafting Committee: ISO/TC 138/SC 5/WG 17 - Alternative test methods

Standards Content (Sample)

FINAL
TECHNICAL ISO/DTS
DRAFT
SPECIFICATION 24399
ISO/TC 138/SC 5
Thermoplastic pipes for the
Secretariat: NEN
conveyance of fluids — Inspection of
Voting begins on:
2022-08-09 polyethylene butt fusion joints using
time of flight diffraction testing
Voting terminates on:
2022-10-04
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 diffraction des temps de vol
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2022

TECHNICAL ISO/TS
SPECIFICATION 24399
Thermoplastic pipes for the
conveyance of fluids — Inspection of
polyethylene butt fusion joints using
time of flight diffraction 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 diffraction des temps de vol
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
PROOF/ÉPREUVE
ISO copyright office
CP 401 • Ch. de Blandonnet 8
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Phone: [phone]
Reference number
Email: [e-mail]
ISO/TS 24399:2022(E)
Website: www.iso.org
Published in Switzerland
ii
ISO/TS 24399:2022(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 3
5 Information required prior to testing . 3
5.1 Items required for test procedure development . 3
5.2 Specific information required by the operator before testing . 3
5.3 Written qualified test procedure . 3
6 Personnel qualifications . .4
7 Equipment . 4
7.1 General . 4
7.2 Ultrasonic instrument and display . 4
7.3 Ultrasonic probes . 4
7.3.1 Probe selection. 4
7.3.2 Probe separation . 5
7.4 Scanning mechanisms . 5
7.5 Couplant . 6
8 Range and sensitivity settings . 6
8.1 Settings . . . 6
8.1.1 General . 6
8.1.2 Range setting ­ test volume . 6
8.1.3 Time window . 7
8.1.4 Time­to­depth conversion . 7
8.1.5 Sensitivity settings . . 7
8.2 Reference sample. 7
8.2.1 General . 7
8.2.2 Reference block . . 7
8.2.3 Reference reflectors . 8
8.3 Checking of the settings . 8
9 Equipment checks . 8
10 Test procedure .8
10.1 Procedure qualification . 8
10.2 Scan increment . 9
10.3 Component geometry . 9
10.4 Preparation of scanning surfaces . 9
10.5 Component temperature . 10
10.6 Testing . 10
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 . 11
11.4 Classification of relevant indications . 11
11.5 Determination of location and size of indications . 11
11.6 Assessment of indications . 11
12 Test report .11
Annex A (informative) Example of reference reflectors and reference blocks .13
iii
ISO/TS 24399:2022(E)
Annex B (informative) Example procedures for producing imperfections in butt fusion
joints .18
Bibliography .22
iv
ISO/TS 24399:2022(E)
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 non­governmental, 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 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.
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.
v
TECHNICAL SPECIFICATION ISO/TS 24399:2022(E)
Thermoplastic pipes for the conveyance of fluids —
Inspection of polyethylene butt fusion joints using time of
fl
...

ISO/TC 138/SC 5 N
Date:  2022-06-2707
ISO/TC 138/SC 5/WG 17
Secretariat:  NEN
Thermoplastic pipes for the conveyance of fluids – Inspection of polyethylene
butt fusion joints using time of flight diffraction testing

Warning
This document is not an ISO International Standard. It is distributed for review and comment. It is
subject to change without notice and may not be referred to as an International Standard.
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.

Document type: Preliminarily Draft Technical Specification
Document subtype:
Document stage:  (20) Preparatory
Document language:  E
STD Version 2.7f
Copyright notice
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the reproduction of working drafts or committee drafts in any form for use by participants in the
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Violators may be prosecuted.
i
Content
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 3
5 Information required prior to testing . 3
5.1 Items required for test procedure development . 3
5.2 Specific information required by the operator before testing . 3
5.3 Written test procedure . 4
6 Personnel qualifications . 4
7 Equipment . 4
7.1 General . 4
7.2 Ultrasonic instrument and display . 5
7.3 Ultrasonic probes . 5
7.4 Scanning mechanisms . 5
7.5 Couplant. 5
8 Range and sensitivity settings . 6
8.1 Settings . 6
8.1.1 General . 6
8.1.2 Range setting - test volume . 6
8.1.3 Time window . 6
8.1.4   Time-to-depth
conversion………………………………………………………………………………………………. . 7
8.1.5   Sensitivity settings
………………………………………………………………………………………………………….7
8.2     Reference
sample…………………………………………………………………………………………………………… 8
8.2.1 General . 8
8.2.2 Reference block . 8
8.2.3 Reference reflectors . 8
8.3 Checking of the settings . 8
9 Equipment checks . 8
10 Test procedure . 8
10.1 Procedure qualification . 9
10.2 Scan increment . 9
10.3 Component geometry . 10
10.4 Preparation of scanning surfaces . 10
10.5 Component temperature . 10
10.6 Testing . 10
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 . 11
11.3 Identification of relevant indications . 11
11.4 Classification of relevant indications . 11
ii
11.5 Determination of location and size of indications . 12
11.6 Assessment of indications . 12
12 Test report . 12

Annex A (Informative) Example of reference reflectors and reference blocks . 14
A.1 Reference reflectors . 14
A.2 Reference blocks . 16
A.2.1 Reference block with SDHs and a surface notch – Single block use . 16
A.2.2 Reference block with SDHs and a surface notch – Multi-block use . 17
Annex B (Informative) Example procedures for producing imperfections in butt fusion
joints . 18
B.1 Planar lack of fusion . 18
B.2 Particulate contamination. 19

Bibliography…………………………………………………………………………………………………………………………
….22
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, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electro-technicalElectrotechnical Commission (IEC) on all
matters of electro-technicalelectrotechnical 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). 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).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 onof 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 the following
URL: Foreword - Supplementary informationwww.iso.org/iso/foreword.html.
The main task of technical committees is to prepare International Standards.
In exceptional circumstances, when a technical committee has collected data of a different kind from that
which is normally published as an International Standard (“state of the art”, for example), it may decide
by a simple majority vote of its participating members to publish a Technical Specification.
The committee responsible for this document isThis 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.
iv
DRAFTTECHNICAL SPECIFICATION ISO/DTS22499

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.
ISO/DTS22499
TECHNICAL SPECIFICATION ISO/DTS 24399:2022(E)

Thermoplastic pipes for the conveyance of fluids — Inspection
of polyethylene butt fusion joints using time of flight
diffraction testing
1 Scope
This document describes the time of flight diffraction (TOFD) testing of polyethylene butt fusion (BF)
joints, including pipe-to-pipe, pipe-to-fitting and fitting-to-fitting joints, used for the conveyance of fluids.
This document provides a test, whereby the presence of imperfections such as voids, inclusions, lack of
fusions, misalignment and particulate contamination in the BF joints can be detected. The document is
only applicable to polyethylene pipes and fittings without a barrier to ultrasonic waves.
This document also provides requirement for procedure qualification and guidance for personnel
qualifications which are essential for the application of this test method.
This document also covers the equipment, the preparation and performance of the test, the indication
assessment and the reporting for polyethylene BF joints. The acceptance criteria are not covered in this
document.
NOTE 1:  At the present time laboratory experience
...