ISO 3434:2012

Ships and marine technology - Heated glass panes for ships' rectangular windows

ISO 3434:2012 specifies construction characteristics, optical qualities and heat current circuit, as well as the tolerances, tests, marking and designation of heated glass panes for ships' rectangular windows of the heated series according to ISO 3903. It includes the conditions to comply with the safety of ships in times of frost and/or snow, particularly during manoeuvres in port. Heated glass panes are used on ships principally for the windows of wheel-houses and bridges, as well as in enclosed locations used for look-out and manoeuvring purposes. ISO 3434:2012 specifies heated glass panes which are intended for use at temperatures down to -40 °C.

Navires et technologie maritime — Vitrages chauffants pour fenêtres rectangulaires de navires

General Information

• Status: Published
• Publication Date: 30-Aug-2012
• ICS: 47.020.10 - Hulls and their structure elements
• ICS: 47.020.90 - Marine ventilation, air-conditioning and heating systems
• Technical Committee: ISO/TC 8/SC 8 - Ship design
• Drafting Committee: ISO/TC 8/SC 8 - Ship design
• Current Stage: 9093 - International Standard confirmed
• Start Date: 04-Dec-2023
• Completion Date: 13-Dec-2025

Relations

• Revises: ISO 3434:1992/Amd 1:2004 - Shipbuilding and marine structures - Heated glass panes for ships' rectangular windows - Amendment 1
• Effective Date: 30-May-2009
• Revises: ISO 3434:1992 - Shipbuilding and marine structures - Heated glass panes for ships' rectangular windows
• Effective Date: 30-May-2009

Overview

ISO 3434:2012 - Ships and marine technology: Heated glass panes for ships' rectangular windows - defines requirements for construction, optical performance, heating circuits, tolerances, tests, marking and designation of heated laminated glazing used for ship windows (wheelhouses, bridges and lookout/manoeuvring stations). The standard covers heated panes intended for service temperatures down to −40 °C and addresses safety and visibility during frost and snow conditions.

Key topics and technical requirements

• Scope: Construction characteristics, optical qualities, heat circuit, tolerances, tests, marking and designation for heated series windows per ISO 3903.
• Optical requirements: Clear main vision area (50 mm peripheral exemption), no tinted glass, no perceptible colour distortion of signal lights, effective de-misting/de-icing and wiper compatibility.
• Construction and materials: Laminated assemblies with a carrier pane (thermally toughened per ISO 21005), a cover pane (toughened or semi-toughened), an interlayer (e.g., PVB) and a heating element (thin wire, conductive film or coating). Two types: Type A (two laminated panes) and Type B (three laminated panes).
• Edge protection: Sealed edge bonding (silicone, rubber, polysulfides etc.) to prevent moisture ingress and provide insulation (edge bond not thicker than 3 mm).
• Dimensional tolerances: Thickness and flatness/parallelism tolerances (flatness max 3 mm/1 000 mm; parallelism max 1 mm/1 000 mm).
• Heat output (typical):
  • 7–9 W/dm² - effective down to −12 °C
  • 12–15 W/dm² - effective down to −28 °C
  • 17–21 W/dm² - effective down to −40 °C
• Electrical / safety: Supply per IEC 60092-101; moisture-proof connection boxes min. IP22; overheating protection to limit surface temperature ≤ 50 °C with single (S) or group (G) regulation.
• Testing & certification: Electrical dielectric test (1 min: AC 1 000 V + 2× rated voltage, min 1 500 V, 25–100 Hz), mechanical strength per ISO 614; testing labs should comply with ISO/IEC 17025.
• Marking & designation: Standardized triangular mark showing total thickness, heat output, voltage ID and type (A/B).

Applications and users

• Practical for shipbuilders, naval architects, marine glazing manufacturers, suppliers of heated windscreen systems, ship electrical installers, and port/commissioning inspectors.
• Use cases: wheelhouse and bridge windows, lookout windows, pilot stations and any enclosed manoeuvring/viewing positions where de-icing and clear visibility are critical.

Related standards

• ISO 3903 (ships’ ordinary rectangular windows), ISO 21005 (toughened safety glass), ISO 614 (strength testing), IEC 60092-101 (ship electrical installations), IEC 60529 (IP codes), ISO/IEC 17025 (lab competence).

Keywords: ISO 3434:2012, heated glass panes, ships' rectangular windows, marine windows, de-frosting, bridge windows, heat output, electrical connections, laminated glass, marine glazing.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 3434
Third edition
2012-09-01
Ships and marine technology — Heated
glass panes for ships’ rectangular windows
Navires et technologie maritime — Vitrages chauffants pour fenêtres
rectangulaires de navires
Reference number
©
ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
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Tel. + 41 22 749 01 11
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Published in Switzerland
ii © ISO 2012 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Optical requirements . 1
3.1 Requirements . 1
3.2 Visibility . 2
3.3 Discoloration . 2
4 Construction of glass pane . 2
4.1 General . 2
4.2 Composition and materials . 2
4.3 Protection of edges . 4
4.4 Dimensions . 4
4.5 Parallelism . 6
4.6 Admissible distortion . 6
5 Heating circuit . 6
5.1 Heat output . 6
5.2 Electrical power supply . 7
5.3 Electrical connections . 7
5.4 Overheating protection . 7
6 Tests . 8
6.1 Electrical tests . 8
6.2 Mechanical tests . 8
6.3 Test certification . 8
7 Marking . 8
8 Designation . 9
Annex A (informative) Model for test certificate .10
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 3434 was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee
SC 8, Ship design.
This third edition cancels and replaces the second edition (ISO 3434:1992), which has been technically revised.
It also incorporates the Amendment ISO 3434:1992/Amd.1:2004.
iv © ISO 2012 – All rights reserved

INTERNATIONAL STANDARD ISO 3434:2012(E)
Ships and marine technology — Heated glass panes for ships’
rectangular windows
1 Scope
This International Standard specifies construction characteristics, optical qualities and heat current circuit, as
well as the tolerances, tests, marking and designation of heated glass panes for ships’ rectangular windows of
the heated series according to ISO 3903.
It includes the conditions to comply with the safety of ships in times of frost and/or snow, particularly during
manoeuvres in port.
Heated glass panes are used on ships principally for the windows of wheel-houses and bridges, as well as in
enclosed locations used for look-out and manoeuvring purposes. This International Standard specifies heated
glass panes which are intended for use at temperatures down to -40 °C.
2 Normative references
The following cited documents are indispensable for the application of this document. For dated references,
the edition cited applies only. For undated references, the latest edition of the referenced document (including
any amendments) applies.
ISO 554:1976, Standard atmospheres for conditioning and/or testing — Specifications
ISO 614, Shipbuilding and marine technology — Toughened safety glass panes for rectangular windows and
side scuttles — Punch method of non-destructive strength testing
ISO 3903, Ships and marine technology — Ships’ ordinary rectangular windows
ISO 5779:1987, Shipbuilding — Ordinary rectangular windows — Positioning
ISO 21005, Ships and marine technology — Thermally toughened safety-glass panes for windows and side scuttles
IEC 60092-101, Electrical installations in ships — Part 101: Definitions and general requirements
,
IEC 60529:2001 Degrees of protection provided by enclosures (IP Code)
3 Optical requirements
3.1 Requirements
When heated glass panes are installed in windows, they shall comply with the requirements in 3.2 and 3.3.
All the optical requirements shall apply independent of the kind of temperature control (for example, a thermostat).
However, these optical qualities are not required at the periphery of the glass pane within a distance of 50 mm
width, see Figure 1.
Dimensions in millimetres
Key
1 edge cover, variable width
2 edge zone
3 main clear vision area
4 pane size (w/h)
Figure 1 — Main clear vision area
3.2 Visibility
Heated glass panes shall ensure perfect visibility in all weather, avoiding the formation of mist or frost, in
relation to the heat output, see Table 3. In addition, they shall ensure maximum efficiency of the windscreen
wipers when operating in conditions of frost and/or snow. They shall not cause any significant reduction in the
ability of a person to see with the naked eye or binoculars when a distant object is observed at normal line of
vision through the glass. National and international regulations must be considered.
Tinted glass shall not be used.
3.3 Discoloration
Heated glass panes shall not cause any deterioration in perception of colour, or perceivable discoloration of
objects, in particular colours of signal lights and lights on buoys.
4 Construction of glass pane
4.1 General
A complete mountable heated glass pane that meets the requirements of this International Standard is an
assembly consisting of laminated glass panes and a durable mounted device f
...