ISO 20662:2020

INTERNATIONAL ISO
STANDARD 20662
First edition
2020-01
Ships and marine technology —
Hopper dredger supervisory and
control systems
Reference number
©
ISO 2020
© ISO 2020
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ii © ISO 2020 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 2
4 Components and structure . 2
4.1 Components . 2
4.2 Structure . 3
5 General requirements . 3
5.1 Operating position and control mode . 3
5.1.1 Operating position . 3
5.1.2 Control mode. 3
5.2 External communication . 3
5.3 Diagnostic . 3
5.4 HMI graphics . 4
5.4.1 Alarm level . 4
5.4.2 Conventions on graphic colours . 4
5.4.3 Brightness of the HMI . 4
6 Functional requirements . 4
6.1 STPM/STWC . 4
6.1.1 Preset . 4
6.1.2 Operation . 5
6.1.3 Controller . 5
6.1.4 Display . 5
6.1.5 Alarm. 5
6.1.6 Calibration . 5
6.2 DSLS . 5
6.2.1 Preset . 5
6.2.2 Operation . 6
6.2.3 Controller . 6
6.2.4 Display . 6
6.2.5 Alarm. 6
6.2.6 Calibration . 6
6.3 Unloading system . 6
6.3.1 Preset . 6
6.3.2 Operation . 6
6.3.3 Display . 7
6.3.4 Alarm. 7
6.4 Dredge pump system . 7
6.4.1 Operation . 7
6.4.2 Controller . 7
6.4.3 Display . 7
6.4.4 Alarm. 7
6.5 Jet water system . 8
6.5.1 Preset . 8
6.5.2 Operation . 8
6.5.3 Display . 8
6.5.4 Alarm. 8
6.6 Dredge valve system . 8
6.6.1 Preset . 8
6.6.2 Operation . 8
6.6.3 Display . 8
6.6.4 Alarm. 9
iv © ISO 2020 – All rights reserved

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).
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constitute an endorsement.
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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.
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.
Introduction
This document describes the supervisory and control system for a number of components, functions
and systems that can, but do not have to, be installed on board of a hopper dredger. It does not prescribe
that all described components, functions and systems need to be installed.
vi © ISO 2020 – All rights reserved

INTERNATIONAL STANDARD ISO 20662:2020(E)
Ships and marine technology — Hopper
...