ISO 3078:2016

INTERNATIONAL ISO
STANDARD 3078
Third edition
2016-11-15
Shipbuilding — Cargo winches
Construction navale — Treuils de charge
Reference number
©
ISO 2016
© ISO 2016, Published in Switzerland
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ii © ISO 2016 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Design and operation . 3
4.1 General . 3
4.2 Stress calculation . 3
4.3 Direction of motion of operating control device . 3
4.4 Acceleration and deceleration . 4
4.5 Braking . 4
4.6 Drum design . 4
4.7 Warping ends . 4
5 Performance . 5
6 Acceptance tests . 5
6.1 Rules concerning acceptance tests at manufacturer’s works by purchaser . 5
6.1.1 General. 5
6.1.2 Type testing . 5
6.1.3 Individual test. 6
6.2 On-board acceptance tests . 6
7 Designation . 6
8 Marking . 7
Bibliography . 8
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).
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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.
The committee responsible for this document is ISO/TC 8, Ships and marine technology, Subcommittee
SC 4, Outfitting and deck machinery.
This third edition cancels and replaces the second edition (ISO 3078:1987), which has been technically
revised with the following changes:
a) definition of “maximum setting down speed” has been added which is one of the most important
factor in performance;
b) requirement of length of rope reeling off of the drum has been added to guarantee the safety
operation of ropes.
iv © ISO 2016 – All rights reserved

INTERNATIONAL STANDARD ISO 3078:2016(E)
Shipbuilding — Cargo winches
1 Scope
This document specifies the general requirements of cargo winches on cargo derricks, particularly
electric drive or hydraulic drive.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2408, Steel wire ropes for general purpose — Characteristics
ISO 6482, Shipbuilding — Deck machinery — Warping end profiles
ISO 7825, Shipbuilding — Deck machinery — General requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3828 and the following apply.
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 http://www.iso.org/obp
3.1
cargo winch
winch used for hoisting and lowering cargo
[SOURCE: ISO 3828:2008, 4.2]
3.2
nominal size
size which corresponds to the nominal load, i.e. the maximum working load at the hook, in kilonewtons,
which the winch is rated to lift in direct operations (with a single sheave at the derrick-head and a
single sheave at the foot)
Note 1 to entry: Winches are graded according to their nominal size as given in Table 1.
Note 2 to entry: If the winch has reduction gear with several gear ratios, each step shall correspond to a nominal
load in Table 1.
Note 3 to entry: The nominal sizes are derived from the preferred number series.
Note 4 to entry: The definition of the nominal size given above is not applicable to heavy derricks.
Note 5 to entry: See Figure 1.
3.3
nominal speed of hoisting
minimum speed at which the winch is capable of lifting the nominal load
Note 1 to entry: The minimum nominal speeds of hoisting are given in Table 1.
3.4
drum load
maximum rope tension measured at the drum exit when the winch is hauling in at the nomin
...