ISO/DIS 5489

Ships and marine technology -- Embarkation ladders

Navires et technologie marine -- Échelles d'embarcation

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD ISO/DIS 5489
ISO/TC 8/SC 1 Secretariat: ANSI
Voting begins on: Voting terminates on:
2004-01-28 2004-06-28

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION

Ships and marine technology — Embarkation ladders
Navires et technologie marine — Échelles d'embarcation
[Revision of second edition (ISO 5489:1986)]
ICS 47.020.50

In accordance with the provisions of Council Resolution 15/1993 this document is circulated in

the English language only.

Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué

en version anglaise seulement.

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ISO Central Secretariat work of editing and text composition will be undertaken at publication

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Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du

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Secrétariat central de l'ISO au stade de publication.

THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE

REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.

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INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO

WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
© International Organization for Standardization, 2004
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ISO/DIS 5489
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ii ISO 2004 – All rights reserved
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ISO/DIS 5489
Contents Page

Foreword .........................................................................................................................................................iv

1 Scope...................................................................................................................................................1

2 Normative reference(s).......................................................................................................................1

3 Materials..............................................................................................................................................1

4 Construction........................................................................................................................................3

5 Testing for approval............................................................................................................................7

6 Designation.........................................................................................................................................9

7 Marking..............................................................................................................................................10

8 Production tests and examinations.................................................................................................11

9 Maintenance......................................................................................................................................11

Annex A (informative) Recommended production tests and inspections ...................................................1

A.1 General................................................................................................................................................1

A.2 Sample selection and testing of steps ..............................................................................................1

A.3 Sample selection and testing of ladders...........................................................................................2

© ISO 2003 — All rights reserved iii
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ISO/DIS 5489
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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

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.

ISO 5489 was prepared by Technical Committee ISO/TC 8, Ships and Marine Technology, Subcommittee

SC 1, Lifesaving and Fire Protection.

This third edition cancels and replaces the second edition (ISO 5489:1986), of which it constitutes

a complete revision in order to take into account new designs and manufacturing methods for

embarkation ladders which have entered the market since 1986.
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ISO/DIS 5489
Introduction

This International Standard is intended to supplement existing IMO requirements for embarkation ladders.

Since IMO instruments do not include specific requirements for prototype testing of embarkation ladders for

approval, those tests included in this standard are in excess of the existing IMO requirements. The inclusion

of these tests was considered necessary in order to provide a means of ensuring conformance of embarkation

ladders with the performance requirements prescribed in IMO instruments and in this International Standard.

© ISO 2003 — All rights reserved v
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COMMITTEE DRAFT © © ISO 2003 — All rights reserved ISO/DIS 5489
Ships and marine technology — Embarkation ladders
1 Scope

This International Standard specifies requirements for a ship’s embarkation ladder which is provided to enable safe

embarkation of waterborne survival craft along a vertical portion of the ship's hull. It is applicable to merchant ships

required to carry embarkation ladders under Chapter III of the 1974 International Convention for the Safety of Life

at Sea (SOLAS), as amended. National maritime safety administrations are urged to accept ladders complying

with this International Standard on their ships, as complying fully with the requirements of SOLAS.

2 Normative reference(s)

The following referenced documents are indispensable for the application 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 209-1:1989, Wrought aluminium and aluminium alloys – Chemical composition and form of products – Part 1:

Chemical composition

ISO 877:1994, Plastics -- Methods of exposure to direct weathering, to weathering using glass-filtered daylight, and

to intensified weathering by daylight using Fresnel mirrors
ISO 1181:1990, Ropes -- Manila and sisal -- Specification

ISO 1461:1999, Hot dip galvanized coatings on fabricated iron and steel articles – Specifications and test methods

3 Materials
3.1 Wooden parts

Each wooden part shall be made of hardwood (ash, oak, elm, beech or teak) free from knots.

3.2 Side ropes

3.2.1 Each side rope shall be mildew-resistant manila rope meeting ISO 1181, Quality 1, or a spun thermoset

polyester rope with a polypropylene core of a color that contrasts with the spun polyester. Each side rope shall

have a breaking strength of at least 24 kN, and a nominal diameter of 18 mm (57 mm circumference).

3.2.2 Alternative side ropes of synthetic material may be used if they:
a) meet the breaking strength and size requirements of 3.2.1;

b) are at least as resistant to elongation under load as the standard ropes described in 3.2.1;

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ISO/DIS 5489 © © ISO 2003 — All rights reserved

c) have an exterior surface suitable for grasping with bare hands, similar to manila or spun polyester;

d) are of a thermoset polymer, resistant to deterioration from ultraviolet light; and

e) provide a visual indication of excessive wear, similar to the spun polyester/polypropylene construction

described in 3.2.1.
3.3 Metallic materials

3.3.1 Each metal fastener shall be made of material which is inherently corrosion-resistant, or treated to be

corrosion-resistant.

3.3.2 Each ferrous metal part which is not stainless steel, shall be coated in accordance with ISO 1461.

3.3.3 Each stainless steel part shall be of a marine grade alloy with a corrosion resistance at least equal to grade

316 .

3.3.4 Each aluminium part shall be 5254 or 5652 alloy, or other grade containing not more than 0,06% copper, in

accordance with ISO 209-1.

3.3.5 Metals in contact with each other shall be galvanically compatible, or insulated to prevent galvanic

corrosion in a marine environment.
3.4 Mechanical fastening devices

Each mechanical fastening device securing a part of a ladder shall have a locking mechanism to prevent the device

from loosening.
3.5 Plastic materials

Each plastic material shall be of a type that retains at least 30 percent of its original tensile strength and at least 80

percent of its original impact strength when subjected to the one year outdoor weathering test described in Method

A of ISO 877:1994.
3.6 Quality of materials

Each part of a ladder shall be free of splinters, burrs, sharp edges, corners, projections, or other defects that could

injure a person using the ladder.
3.7 Rope seizing

Seizing, if used, shall consist of two- or three-ply marline of minimum breaking strength 800 N, or other suitable

material of equivalent strength.

See Iron & Steel Society (ISS) publication Stainless Steels, available from Iron & Steel Society, 186 Thorn Hill Road,

Warrendale, PA 15090-7528, USA, or http://www.iss.org.
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© © ISO 2003 — All rights reserved ISO/DIS 5489
4 Construction

4.1 Each ladder shall have two side ropes on each side. Ladders may also be constructed as three-string

ladders with a third set of ropes in the middle of the ladder as illustrated in Figure 1. In a three-string ladder, the

third set of ropes shall meet the same requirements as the side ropes. Each step in the ladder shall be supported

by each side rope.
Figure 1 — Conventional embarkation ladder (left). Three-string ladder (right).
4.2 The side ropes shall:
a) be continuous from the top of the ladder to the bottom; and
b) not be painted or otherwise coated or covered.

4.3 Unless a special arrangement is needed for a custom installation, the ends of the side ropes shall be finished

as follows:

a) The top end of one or both of the side ropes on each side shall terminate just above the top step in a single eye

splice or thimble large enough to accommodate at least two passes of side rope.

b) The top end of one side rope on each side of the ladder shall extend at least 3 m beyond the top ladder step, or

an extension service rope shall be fitted to each side rope eye splice or thimble by means of an eye splice or

shackle, as shown in Figure 2. The diameter of an extension service rope shall be at least the diameter of the

side ropes.
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ISO/DIS 5489 © © ISO 2003 — All rights reserved

c) The side ropes shall not have fittings or form loops at the bottom of the ladder that can be used to attach

additional ladder sections or tripping lines.

d) The ends of each side rope which do not terminate in a splice or fitting, shall be served or otherwise treated to

prevent fraying.
Figure 2 — Alternative extension service rope arrangements at top of ladder

4.4 Each side rope shall pass through a hole in each step. If the hole is in the form of a slot, the slot shall be in

the longer edges of the steps. The center of each hole shall be at least 50 mm from the end of the step.

Alternative arrangements are shown in Figure 3.

4.5 Each pair of side ropes shall be secured together both above and below each step with a mechanical

clamping device or seizing method which holds each step level when the ladder is hanging freely. Alternative

arrangements are shown in Figure 4.
4.6 If a mechanical clamping device is used to secure the side ropes an
...