SIST EN ISO 8384:2018
(Main)Ships and marine technology - Dredgers - Vocabulary (ISO 8384:2018)
Ships and marine technology - Dredgers - Vocabulary (ISO 8384:2018)
This document specifies terms and definitions relating to dredgers, with the aim of giving clear enough
definitions for every term for them to be understood by all specialists.
This document is applicable only to equipment which is used for the construction and maintenance of
navigable waterways and the extraction of soil and rocks.
The terms specified in this document are intended to be used in documentation of all kinds. Certain
standardized terms are also given with their abridged version; these can be used in cases where no
possibility of misinterpretation can arise.
A combination of terms is allowed in application.
Schiffe und Meerestechnik - Schwimmbagger - Begriffe (ISO 8384:2018)
Navires et technologie maritime - Dragues - Vocabulaire (ISO 8384:2018)
Le présent document définit les termes et définitions relatifs aux dragues dans le but de donner des définitions suffisamment claires pour que chaque terme puisse être compris par tous les spécialistes.
Le présent document n'est applicable qu'aux équipements utilisés pour la construction et l'entretien des voies navigables et pour l'extraction du sol et de roches.
Les termes définis dans le présent document sont destinés aux documents de tous types. Certains termes normalisés sont aussi donnés avec leurs formes abrégées, qui peuvent être utilisées dans les cas où aucune confusion n'est possible.
Il est admis d'employer des combinaisons de termes pour des raisons pratiques.
Ladje in pomorska tehnologija - Plovni bagri - Slovar (ISO 8384:2018)
Ta dokument določa izraze in definicije v zvezi s plovnimi bagri za namene zagotavljanja ustreznega razumevanja posameznih izrazov, ki jih uporabljajo strokovnjaki.
Ta dokument se uporablja samo za opremo, ki se uporablja za vzpostavitev in vzdrževanje plovnih poti ter izkopavanje zemlje in kamnin.
V tem dokumentu opredeljeni izrazi so predvideni za uporabo v različnih dokumentacijah. Nekateri standardizirani izrazi so podani tudi v skrajšani različici in se lahko uporabljajo v primerih brez možnosti napačne razlage.
Primeri uporabe lahko vključujejo kombinacijo izrazov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 8384:2018
01-december-2018
1DGRPHãþD
SIST EN ISO 8384:2002
Ladje in pomorska tehnologija - Plovni bagri - Slovar (ISO 8384:2018)
Ships and marine technology - Dredgers - Vocabulary (ISO 8384:2018)
Schiffe und Meerestechnik - Schwimmbagger - Begriffe (ISO 8384:2018)
Navires et technologie maritime - Dragues - Vocabulaire (ISO 8384:2018)
Ta slovenski standard je istoveten z: EN ISO 8384:2018
ICS:
01.040.47 Ladjedelništvo in konstrukcije Shipbuilding and marine
na morju (Slovarji) structures (Vocabularies)
47.020.40 Dvigalna oprema in oprema Lifting and cargo handling
za pretovor equipment
SIST EN ISO 8384:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 8384:2018
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SIST EN ISO 8384:2018
EN ISO 8384
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2018
EUROPÄISCHE NORM
ICS 01.040.47; 47.060 Supersedes EN ISO 8384:2001
English Version
Ships and marine technology - Dredgers - Vocabulary (ISO
8384:2018)
Navires et technologie maritime - Dragues - Schiffe und Meerestechnik - Schwimmbagger - Begriffe
Vocabulaire (ISO 8384:2018) (ISO 8384:2018)
This European Standard was approved by CEN on 19 August 2018.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8384:2018 E
worldwide for CEN national Members.
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SIST EN ISO 8384:2018
EN ISO 8384:2018 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 8384:2018
EN ISO 8384:2018 (E)
European foreword
This document (EN ISO 8384:2018) has been prepared by Technical Committee ISO/TC 8 "Ships and
marine technology" in collaboration with Technical Committee CEN/TC 15 “Inland navigation vessels”
the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2019, and conflicting national standards shall
be withdrawn at the latest by March 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 8384:2001.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 8384:2018 has been approved by CEN as EN ISO 8384:2018 without any modification.
3
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SIST EN ISO 8384:2018
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SIST EN ISO 8384:2018
INTERNATIONAL ISO
STANDARD 8384
Third edition
2018-08
Ships and marine technology —
Dredgers — Vocabulary
Navires et technologie maritime — Dragues — Vocabulaire
Reference number
ISO 8384:2018(E)
©
ISO 2018
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SIST EN ISO 8384:2018
ISO 8384:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
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
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Email: copyright@iso.org
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Published in Switzerland
ii © ISO 2018 – All rights reserved
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SIST EN ISO 8384:2018
ISO 8384:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Terms relating to general concepts applicable to dredgers . 1
3.2 Terms relating to basic parameters of dredgers . 2
3.3 Terms relating to types of dredger . 3
3.3.1 Types of dredgers depending on methods of soil extraction or treatment . 3
3.3.2 Types of dredgers defined by power plant . 6
3.3.3 Types of dredgers defined by their propulsion or manoeuvrability . 6
3.3.4 Types of dredger defined by way of assembly . 7
3.4 Terms relating to methods and equipment for removal of soil . 7
3.5 Terms relating to methods and equipment for operating movement .10
3.6 Terms relating to dredging pump unit and to soil-loosening equipment .11
3.7 Terms relating to controls and to monitoring and measuring instruments .13
3.8 Terms relating to special types of dredgers .16
3.8.1 Terms relating to bucket chain dredger and to bucket assembly .16
3.8.2 Terms relating to trailing suction hopper dredger and its dredging equipment .18
3.8.3 Terms relating to cutter suction dredger and its dredging equipment .19
3.8.4 Terms relating to grab/dipper/backhoe dredger and their dredging
equipment . . .21
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SIST EN ISO 8384:2018
ISO 8384:2018(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 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 on 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: www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 8, Ships and marine technology,
Subcommittee SC 7, Inland navigation vessels.
This third edition cancels and replaces the second edition (ISO 8384:2000), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— terms on trailing suction hopper dredger, cutter suction dredger and bucket type dredgers have
been added;
— terms on bucket chain dredger have been added under “Terms relating to bucket chain dredger and
to bucket assembly”;
— terms for supervisory and control system have been added;
— the structure of the document has been revised in accordance with the ISO/IEC Directives,
Part 2:2018.
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 2018 – All rights reserved
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SIST EN ISO 8384:2018
INTERNATIONAL STANDARD ISO 8384:2018(E)
Ships and marine technology — Dredgers — Vocabulary
1 Scope
This document specifies terms and definitions relating to dredgers, with the aim of giving clear enough
definitions for every term for them to be understood by all specialists.
This document is applicable only to equipment which is used for the construction and maintenance of
navigable waterways and the extraction of soil and rocks.
The terms specified in this document are intended to be used in documentation of all kinds. Certain
standardized terms are also given with their abridged version; these can be used in cases where no
possibility of misinterpretation can arise.
A combination of terms is allowed in application.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http: //www .electropedia .org/
— ISO Online browsing platform: available at https: //www .iso .org/obp
3.1 Terms relating to general concepts applicable to dredgers
3.1.1
dredging
loosening, collecting, transporting and disposing of dredged mixture (3.6.1)
3.1.2
hopper loading
process of the dredged mixture (3.6.1) filled into the hopper hold (3.4.18) of the hopper barge (3.4.13) or
hopper dredger (3.3.1.1.1)
3.1.3
soil
river/seabed material, which may contain sludge, sand, rocks and other material
3.1.4
dredging site
geographical site where excavation or extraction of the soil (3.1.3) is carried out
3.1.5
dredger
vessel or piece of equipment intended for dredging (3.1.1)
3.1.6
dredging unit
dredger (3.1.5) and its service vessels, which is used for extraction, transportation and disposal of soil
(3.1.3) for dredging (3.1.1)
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SIST EN ISO 8384:2018
ISO 8384:2018(E)
3.1.7
dredging fleet
composition of related dredging units (3.1.6) for the accomplishment of dredging (3.1.1)
3.1.8
dredging equipment
devices, installation and systems of a dredger (3.1.5) for the accomplishment of dredging (3.1.1)
3.1.9
dredging apparatus
equipment, installation or tool for excavating the soil (3.1.3), separating it from the bottom of water and
raising it
3.1.10
gantry
rigid steel structure used to suspend or support the dredging equipment (3.1.8)
3.1.11
soil discharge installation
installation for discharging the soil (3.1.3) from the dredger (3.1.5)
3.1.12
spud installation
equipment comprising spuds (3.5.4) and mechanisms for hoisting, lowering, locating and fixing the
spuds (3.5.4)
3.1.13
swell compensator
device ensuring a dredger's (3.1.5) operation to cope with waves and uneven sea/riverbed at the
dredging site (3.1.4)
3.2 Terms relating to basic parameters of dredgers
3.2.1
total installed power
sum of the power of all the prime movers (3.3.2.1) installed in a dredger (3.1.5)
3.2.2
dredging output
volume/mass of soil (3.1.3) extracted by a dredger (3.1.5) per unit of time or per vessel
3.2.3
dredging production
accumulated quantity of the soil (3.1.3) dredged by a dredger (3.1.5) in a period of time
3.2.4
sailing speed
dredger (3.1.5) speed over ground at full load draught during free sailing
3.2.5
dredging speed
dredger (3.1.5) speed over ground during dredging (3.1.1)
3.2.6
dredging depth
vertical distance from the water surface to the lower edge of the dredging equipment (3.1.8) of the
dredger (3.1.5) which is operating
3.2.7
maximum dredging depth
maximum depth at which a dredger (3.1.5) can operate
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SIST EN ISO 8384:2018
ISO 8384:2018(E)
3.2.8
minimum dredging depth
minimum depth at which a dredger (3.1.5) can operate
3.2.9
discharge distance
straight line distance from the outlet of the dredge pump (3.6.2) to the outlet of the delivery pipeline (3.4.4)
3.2.10
hopper hold capacity
maximum volume of the hopper hold (3.4.18) of a dredger (3.1.5) with a hopper hold (3.4.18) or a hopper
barge (3.4.13)
3.2.11
effective hopper hold capacity
volume of dredged material that can be placed and retained in the hopper holds (3.4.18) of a hopper
barge (3.4.13) or a hopper dredger (3.3.1.1.1)
3.2.12
hopper content density
mass per unit of volume of the dredged mixture (3.6.1) dredged and filled in the hopper hold (3.4.18)
3.2.13
hopper solid content
volume of dry soil (3.1.3) loaded in the hopper hold (3.4.18) at the full load draught of the hopper dredger
(3.3.1.1.1) or hopper barge (3.4.13)
3.2.14
hopper load
mass of the dredged mixture (3.6.1) loaded in the hopper hold (3.4.18) at full load draught of a hopper
dredger (3.3.1.1.1) or hopper barge (3.4.13)
3.2.15
hopper loading time
time needed for the filling of the dredged mixture (3.6.1) into the hopper hold (3.4.18) up to full load
draught of a dredger (3.1.5)
3.2.16
transportation distance
distance from dredging site (3.1.4) to disposal area, when the dredged material is transported by a
hopper dredger (3.3.1.1.1) or hopper barge (3.4.13)
3.3 Terms relating to types of dredger
3.3.1 Types of dredgers depending on methods of soil extraction or treatment
3.3.1.1 Hydraulic suction dredgers
3.3.1.1.1
hopper dredger
self-propelled dredger (3.3.3.1) with its own integrated hopper hold (3.4.18)
Note 1 to entry: Hopper dredger can be trailing suction hopper dredger or grab hopper dredger.
3.3.1.1.2
plain suction dredger
dredger (3.1.5) using suction mouth (3.4.30) only and dredge pumps (3.6.2) for extracting and discharging
the dredged mixture (3.6.1) through pipelines
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SIST EN ISO 8384:2018
ISO 8384:2018(E)
3.3.1.1.3
cutter suction dredger
dredger (3.1.5) which uses cutter head (3.8.3.14) and dredge pumps (3.6.2) for excavating, extracting
and discharging the dredged mixture (3.6.1) of soil (3.1.3) through pipelines
Note 1 to entry: Cutter suction dredgers can be non-propelled or self-propelled.
3.3.1.1.4
bucket/cutting wheel suction dredger
cutter suction dredger (3.3.1.1.3) that excavates soil (3.1.3) with a bucket wheel/cutting wheel
3.3.1.1.5
trailing suction hopper dredger
self-propelled dredger (3.3.3.1), which trails the draghead (3.8.2.4) on the ground to excavate, extract
and fill the soil (3.1.3) into its own integrated hopper with a dredge pump (3.6.2)
3.3.1.1.6
split trailing suction hopper dredger
hull of a trailing suction hopper dredger (3.3.1.1.5) with a hull that can be opened along the longitudinal
axis of the vessel to dump the dredged mixture (3.6.1) from the hopper hold (3.4.18)
3.3.1.1.7
trailing suction side‑casting dredger
trailing suction hopper dredger (3.3.1.1.5) equipped with the side casting installation (3.4.36) for
pumping the dredged mixture (3.6.1) over board directly
3.3.1.1.8
dustpan suction dredger
kind of plain suction dredger (3.3.1.1.2) which is equipped with a prolate box type suction mouth (3.4.30)
with jet water (3.6.26) nozzle fitted in the front of the suction mouth (3.4.30)
3.3.1.1.9
deep suction dredger
dredger (3.1.5) having a long suction pipe equipped with a submersible dredge pump (3.6.2)
Note 1 to entry: Normally the dredging depth (3.2.6) of a deep suction dredger exceeds 30 m.
3.3.1.1.10
barge unloading suction dredger
kind of plain suction dredger (3.3.1.1.2) which extracts and pumps the dredged mixture (3.6.1) out of the
hopper hold (3.4.18) to the shore with dredge pump (3.6.2) and suction pipe which is able to stick out
and lower into the hopper hold (3.4.18) of the hopper
3.3.1.1.11
auger suction dredger
dustpan suction dredger (3.3.1.1.8) with a rotary auger installed in the dustpan (3.6.8), the movement of
which is a combination of moving ahead automatically plus swinging from right to left
3.3.1.1.12
jet ejector dredger
dredger (3.1.5) using pressure water for loosening, extracting and transporting the dredged mixture
(3.6.1)
3.3.1.1.13
air‑lift dredger
dredger (3.1.5) using air-lift pump unit for collecting and transporting the dredged mixture (3.6.1)
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SIST EN ISO 8384:2018
ISO 8384:2018(E)
3.3.1.2 Mechanical excavating dredger
3.3.1.2.1
bucket chain dredger
dredger (3.1.5) equipped with serial buckets forming a bucket chain moving along the bucket ladder,
excavating the soil (3.1.3) underwater and loading into the alongside hopper barge (3.4.13) through a
chute (3.8.1.17)
3.3.1.2.2
dipper dredger
dredger (3.1.5) with a single bucket (3.8.1.3) on an arm which moves away from the dredger (3.1.5)
while the bucket (3.8.1.3) excavates the soil (3.1.3)
3.3.1.2.3
backhoe dredger
dredger (3.1.5) with a single bucket (3.8.1.3) on an arm which moves towards the dredger (3.1.5) while
the bucket (3.8.1.3) excavates the soil (3.1.3)
3.3.1.2.4
grab dredger
dredger (3.1.5) which excavates the soil (3.1.3) with one or more grabs (3.8.4.13)
3.3.1.2.5
dragline dredger
dredger (3.1.5) which excavates the soil (3.1.3) with a single bucket moved by dragline
3.3.1.2.6
rock‑breaker
dredger (3.1.5) or other unit fitted with equipment for crushing and fragmenting rock under the water
as a pre-treatment for dredging (3.1.1)
3.3.1.2.7
rock‑breaker with freely falling chisel
rock-breaker (3.3.1.2.6) with a chisel which falls under gravity only
3.3.1.2.8
rock‑breaker with powered chisel
rock-breaker (3.3.1.2.6) with a chisel activated by a power source
3.3.1.2.9
rock‑drilling and blasting vessel
vessel for drilling rocks under water and placing explosives into the drilling hole to smash the rocks
into fragments
3.3.1.2.10
agitation dredger
vessel used for dredging (3.1.1) by loosening the soil (3.1.3) which is then washed away by the current in
the basin so that loosened, suspended material is taken away by the current and settled in deeper areas
3.3.1.2.11
bed leveller
vessel used to level the river/seabed at the dredging site (3.1.4)
3.3.1.2.12
self‑unloading bucket chain dredger
dredger (3.1.5) which uses the chained buckets to excavate the soil (3.1.3) underwater and dilutes the
dredged material into dredged mixture (3.6.1) and pumps it out through the discharge pipeline (3.4.2).
Note 1 to entry: A self-unloading bucket chain dredger is an obsolete type of dredger.
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SIST EN ISO 8384:2018
ISO 8384:2018(E)
3.3.2 Types of dredgers defined by power plant
3.3.2.1
prime mover
engine that produces the power to dredging equipment (3.1.8) for dredging (3.1.1) and discharging the
dredged mixture (3.6.1), and to other users
3.3.2.2
diesel dredger
dredger (3.1.5) using diesel engine(s) as a prime mover (3.3.2.1)
3.3.2.3
dual‑fuel dredger
dredger (3.1.5) using a dual-fuel engine as a prime mover (3.3.2.1)
3.3.2.4
diesel‑electric dredger
dredger (3.1.5) using diesel engine(s) as prime mover(s) (3.3.2.1) driving electric generators to supply
all the electric motors driving dredging equipment (3.1.8) and propulsion machinery where applicable
3.3.2.5
diesel‑hydraulic dredger
dredger (3.1.5) using diesel engine(s) as prime mover(s) (3.3.2.1) to drive hydraulic pumps supplying all
hydraulic motors which driving dredging equipment (3.1.8) and propulsion machinery where applicable
3.3.2.6
steam dredger
dredger (3.1.5) using a steam turbine or steam reciprocating engine as a prime mover (3.3.2.1)
Note 1 to entry: Steam dredgers are obsolete types of dredgers.
3.3.2.7
gas‑turbine dredger
dredger (3.1.5) using a gas turbine as a prime mover (3.3.2.1)
3.3.2.8
electric dredger
dredger (3.1.5) using an electric power plant as a prime mover (3.3.2.1) or fed from external electric supply
3.3.2.9
electric‑hydraulic dredger
dredger (3.1.5) using external electric supply to power electric motors which drive hydraulic pumps for
hydraulic power transmission of the dredging equipment (3.1.8)
3.3.3 Types of dredgers defined by their propulsion or manoeuvrability
3.3.3.1
self‑propelled dredger
dredger (3.1.5) having propelling devices to allow independent movement
3.3.3.2
non‑self‑propelled dredger
dredger (3.1.5) without propelling devices
3.3.3.3
self‑manoeuvrable dredger
non-self-propelled dredger (3.3.3.2) equipped with propulsor(s) for positioning at the dredging site (3.1.4)
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SIST EN ISO 8384:2018
ISO 8384:2018(E)
3.3.4 Types of dredger defined by way of assembly
3.3.4.1
non‑dismountable dredger
dredger (3.1.5) readily assembled on the shipyard for full service use
3.3.4.2
partly dismountable dredger
dredger (3.1.5) partly assembled on the shipyard for final assembly at the place of operation
3.3.4.3
dismountable dredger
dredger (3.1.5) consisting of a number of pontoons with engine and dredging equipment (3.1.8) that can
be assembled with bolts and hooks to form a complete dredger
3.4 Terms relating to methods and equipment for removal of soil
3.4.1
suction pipeline
pipeline through which the dredged mixture (3.6.1) passes from the suction head (3.6.7) to the inlet of
dredge pump (3.6.2)
3.4.2
discharge pipeline
pipeline through which the dredged mixture (3.6.1) is transported from the outlet of the dredge pump
(3.6.2) to the outlet of the discharge pipeline (3.4.2)
3.4.3
discharge pipeline on board
part of the discharge pipe (3.4.2) located on the discharge side of the dredge pump (3.6.2), inside or on
the hull of the dredger (3.1.5)
3.4.4
delivery pipeline
pipeline through which the dredged mixture (3.6.1) is transported from the aft end of the dredger (3.1.5)
to the outlet of the delivery pipeline (3.4.4)
3.4.5
floating delivery pipeline
part of the delivery pipeline (3.4.4) which crosses the water and is supported either by its own inbuilt
buoyancy or by use of pipeline pontoons (3.4.8) or pipeline floaters (3.4.9)
3.4.6
self‑floating pipeline
pipeline covered by floatable material and protecting layer, which can float in the water without any
other floater
3.4.7
submersible pipeline
part of the delivery pipeline (3.4.4) which is laid down under water
3.4.8
pipeline pontoon
small square barge for supporting a floating delivery pipeline (3.4.5)
3.4.9
pipeline floater
equipment for supporting a floating delivery pipeline (3.4.5)
Note 1 to entry: A typical design of a pipeline floater is a construction of two round barrels connected with steel
members.
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SIST EN ISO 8384:2018
ISO 8384:2018(E)
3.4.10
diffuser
device placed on the end of a discharge pipeline (3.4.2) to reduce the velocity of the dredged mixture
(3.6.1) at the disposal site
3.4.11
discharge orifice
tapered nozzle located at the end of the delivery pipeline (3.4.4) to reduce the flowrate of the dredged
mixture (3.6.1)
3.4.12
bow coupling unit
installation comprised of a steel frame for supporting the dredge pipe, ball joint connector and winch,
used for pumping ashore
3.4.13
hopper barge
special kind of vessel, self-propelled, towed or pushed, for the transportation of the soil (3.1.3) extracted
by dredging (3.1.1)
3.4.14
split hopper barge
hopper barge (3.4.13) which can be opened along the full length of the vessel to dump the dredged
material from the hopper hold (3.4.18)
Note 1 to entry: Split hopper barge can be self-propelled or non-self-propelled.
3.4.15
soil transportation by hopper barge
transportation of the soil (3.1.3) extracted by dredging (3.1.1), carried out by hopper barges (3.4.13)
3.4.16
conveyor
moving belt for the disposal of the soil (3.1.3) extracted by dredging (3.1.1)
3.4.17
soil transportation with conveyor
transportation of the soil (3.1.3) extracted by dredging (3.1.1) with removal conveyors (3.4.16) of
sufficient length to the place of discharge
3.4.18
hopper hold
compartment of a hopper dredger (3.3.1.1.1) used to contain the dredged mixture (3.6.1) during dredging
(3.1.1) in the dredging site (3.1.4)
3.4.19
overflow arrangement
arrangement to remove the light density mixture to increase the density of the dredged mixture (3.6.1)
in the hopper hold (3.4.18)
3.4.20
bottom discharge openings
openings in the bottom of the hull of a hopper dredger (3.3.1.1.1) or a hopper barge (3.4.13) for disposal
of the dredged mixture (3.6.1) via either bottom doors (3.4.21) or valves
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SIST EN ISO 8384:2018
ISO 8384:2018(E)
3.4.21
bottom door
device mounted at the bottom discharge openings (3.4.20) for dumping the dredged mixture (3.6.1) in the
hopper hold (3.4.18)
Note 1 to entry: Bottom door is a general term for types of bottom doors such as box bottom door, conical bottom
valve, etc.
3.4.22
box bottom door
box shaped bottom door (3.4.21), equipped with an actuating mechanism for opening and closing the
door for disposal of the soil (3.1.3)
3.4.23
conical bottom valve
kind of bottom door consisting of a valve installed at a circular opening frame in the bottom of a hopper
hold (3.4.18) for disposal of the dredged mixture (3.6.1)
Note 1 to entry: A conical bottom valve consists of a conical valve disc and a valve rod and it is driven usually by
a hydraulic cylinder.
3.4.24
door‑operating device
device for opening, closing and securing the bottom doors (3.4.21) covering bottom discharge openings
(3.4.20)
3.4.25
rock collector
device for separating rocks from the dredged mixture (3.6.1) on the suction side of the dredge pump (3.6.2)
3.4.26
screen
device designed to separate the various grain sizes of the solid material out of the dredged mixture (3.6.1)
3.4.27
hopper chute
device designed to direct the soil (3.1.3) onto the conveyors (3.4.16)
3.4.28
dredged mixture separator
device for separating water from the dredged mixture (3.6.1)
3.4.29
pipeline swivel
...
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