Ships and marine technology — Design requirements for international ballast water transfer connection flange

This document specifies the material requirements and dimensions of an international flange for the transfer of ballast water between a ship and a shore reception facility, or between ships. It does not address any reconfiguration of the ship's ballast water piping system necessary to connect to the shore-side, e.g. construction of piping from the ship lower machinery levels to the main deck transfer area.

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General Information

Status
Published
Publication Date
30-Jan-2020
Current Stage
6060 - International Standard published
Start Date
31-Jan-2020
Due Date
04-Jan-2021
Completion Date
31-Jan-2020
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ISO 23055:2020 - Ships and marine technology -- Design requirements for international ballast water transfer connection flange
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INTERNATIONAL ISO
STANDARD 23055
First edition
2020-01
Ships and marine technology — Design
requirements for international ballast
water transfer connection flange
Reference number
ISO 23055:2020(E)
©
ISO 2020

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ISO 23055:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
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.
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Published in Switzerland
ii © ISO 2020 – All rights reserved

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ISO 23055:2020(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 1
5 Materials and equipment . 1
5.1 General . 1
5.2 Pressure rating . 2
5.3 Non-metallic materials . 2
5.4 Accessories . 2
6 Workmanship . 2
7 Dimensions . 2
8 Marking . 3
9 Quality assurance . 4
10 Ordering information . 4
11 Installation . 4
Annex A (normative) Design of a flange for ballast water transfer systems of larger capacity .5
Annex B (informative) Alternate design of flange bolt hole arrangement . 6
Bibliography . 7
© ISO 2020 – All rights reserved iii

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ISO 23055:2020(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
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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 8, Ships and marine technology,
Subcommittee SC 3, Piping and machinery.
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 © ISO 2020 – All rights reserved

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ISO 23055:2020(E)

Introduction
It is recognized that transfer of ballast water between a ship and a shore-side facility, or another ship,
can be necessary to manage ballast water treatment.
In order for ships and shore facilities to connect the ballast water transfer piping in an efficient
manner, a standardized interface flange is necessary. This type of connection would be similar to the
international fire main ship/shore connection required by the International Convention for the Safety
of Life at Sea (SOLAS).
The need for a standardized international flange for ballast water transfer systems has been presented
to the International Maritime Organization (IMO) Marine Environmental Protection Committee
(MEPC). A standard transfer connection will help enable efficient transfer of ballast water between
ships and facilities in accordance with the Guidel
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