ISO 20712-3:2008
(Main)Water safety signs and beach safety flags — Part 3: Guidance for use
Water safety signs and beach safety flags — Part 3: Guidance for use
ISO 20712-3:2008 gives guidance for the selection and use of water safety signs as specified in ISO 20712-1 and beach safety flags as specified in ISO 20712-2, in aquatic environments. It provides guidance on their location, mounting positions, lighting and maintenance. It also provides guidance on the design and location of multiple signs. ISO 20712-3:2008 does not apply to traffic signs for use on the public highway or maritime signalling. It is not applicable to flags for use on firing ranges or to flags used to indicate water quality. It does not cover means of escape signs and their illumination which may be present.
Signaux de sécurité relatifs à l'eau et drapeaux de sécurité pour les plages — Partie 3: Lignes directrices pour l'utilisation
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INTERNATIONAL ISO
STANDARD 20712-3
First edition
2008-08-15
Water safety signs and beach safety
flags —
Part 3:
Guidance for use
Signaux de sécurité relatifs à l'eau et drapeaux de sécurité pour les
plages —
Partie 3: Lignes directrices pour l'utilisation
Reference number
©
ISO 2008
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ii © ISO 2008 – All rights reserved
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Guidance for selection and siting of signs and flags . 2
4.1 Guidance for risk assessment. 2
4.2 Siting . 3
5 Water safety signs . 3
5.1 General requirements for aquatic environments . 3
5.2 Specific requirements for the swimming pool environment. 6
6 Beach safety flags . 7
6.1 General. 7
6.2 Application of specific beach safety flags . 7
6.3 Materials for beach safety flags . 8
6.4 Operation of flags . 8
6.5 Flag-pole . 9
6.6 Inspection and maintenance of flags and flag-poles. 9
6.7 Storage of flags. 9
7 Multiple signs . 9
7.1 General requirements. 9
7.2 Presentation of information. 9
7.3 Types of multiple signs. 11
8 Tsunami signing system. 14
Annex A (informative) Distance factor z. 15
Annex B (informative) Examples of signing swimming pools. 16
Annex C (informative) Examples of positioning beach safety flags . 18
Annex D (informative) Typeface for text . 20
Annex E (informative) Examples of tsunami signing system. 22
Bibliography . 26
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.
ISO 20712-3 was prepared by Technical Committee ISO/TC 145, Graphical symbols, Subcommittee SC 2,
Safety identification, signs, shapes, symbols and colours.
ISO 20712 consists of the following parts, under the general title Water safety signs and beach safety flags:
⎯ Part 1: Specifications for water safety signs used in workplaces and public areas
⎯ Part 2: Specifications for beach safety flags — Colour, shape, meaning and performance
⎯ Part 3: Guidance for use
iv © ISO 2008 – All rights reserved
Introduction
This part of ISO 20712 reflects good practice in the use of water safety signs and beach safety flags. The
illustrations show examples of the selection and location of water safety signs and beach safety flags
designed to provide information about aquatic hazards and the action necessary to avoid those hazards.
A standardized method of signing with the use of appropriate supplementary text throughout the working and
public environment assists the process of education and instruction on the meaning of water safety signs and
beach safety flags, and the appropriate actions to take. The intention of this part of ISO 20712 is to ensure a
uniformity of application of water safety signs and beach safety flags which leads to increased familiarity, and
therefore improved safety, for the users including visitors and for the general public.
The illustrations within this part of ISO 20712 are based on assumptions that some of the people may be
unfamiliar with the features of the indoor or outdoor swimming pools or of the beach. The illustrations are not
intended to cover every potentially hazardous situation and they should be interpreted as recommendations
and not as minimum requirements.
The use of water safety signs and beach safety flags does not replace the need for proper working methods
and safety instruction or for training in accident prevention and the actions to be taken in the event of an
emergency, or for the provision of lifeguards.
This publication does not purport to include all the necessary provisions of a contract. Users are responsible
for its correct application.
NOTE 1 Some countries’ statutory regulations may differ in some respect from those given in this part of ISO 20712.
NOTE 2 Some countries may differ in some respect from the requirements given in this part of ISO 20712 where they
use the diamond geometric shape for warning signs.
INTERNATIONAL STANDARD ISO 20712-3:2008(E)
Water safety signs and beach safety flags —
Part 3:
Guidance for use
IMPORTANT — The colours represented in the electronic file of this part of ISO 20712 can be neither
viewed on screen nor printed as true representations. Although the copies of this part of ISO 20712
printed by ISO have been produced to correspond (with an acceptable tolerance as judged by the
naked eye) to the requirements of ISO 3864-1, it is not intended that these printed copies be used for
colour matching. Instead, consult ISO 3864-1, which provides colorimetric and photometric properties,
together with, as a guideline, references from colour order systems.
1 Scope
This part of ISO 20712 gives guidance for the selection and use of water safety signs as specified in
ISO 20712-1 and beach safety flags as specified in ISO 20712-2, in aquatic environments. It provides
guidance on their location, mounting positions, lighting and maintenance. It also provides guidance on the
design and location of multiple signs.
This part of ISO 20712 does not apply to traffic signs for use on the public highway or maritime signalling. It is
not applicable to flags for use on firing ranges or to flags used to indicate water quality. It does not cover
means of escape signs and their illumination which may be present.
NOTE The illustrations in this part of ISO 20712 are as accurate as possible within the limitations of the printing
process.
2 Normative references
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 7001, Graphical symbols — Public information symbols
ISO 17724, Graphical symbols — Vocabulary
ISO 20712-1, Water safety signs and beach safety signs — Part 1: Specifications for water safety signs used
in workplaces and public areas
ISO 20712-2, Water safety signs and beach safety signs — Part 2: Specifications for beach safety flags —
Colour, shape, meaning and performance
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 17724 and the following apply.
3.1
beach
area forming a shoreline or sloping bank at the edge of the sea or a river estuary or lake
[ISO 20712-2:2007, 3.1]
3.2
beach safety flag
material that gives a particular safety message by means of a combination of one or more colours and a
geometric shape, and is attached by one end to a pole or rope
NOTE A flag can also have additional support, e.g. a horizontal support.
[ISO 20712-2:2007, 3.2]
3.3
factor of distance
z
relationship between the height (h) of a sign and the observation distance (l), used to determine observation
distances of signs
z = l/h
[ISO 17724:2003, 28]
3.4
multiple sign
two or more safety signs and/or associated supplementary information on the same carrier
3.5
pool basin
water tank where water related activities can take place
3.6
pool surround
area around a pool basin for entry and exit to the pool basin and general circulation space
3.7
safety sign
sign which gives a general safety message, obtained by a combination of a colour and geometric shape and
which, by the addition of a graphical symbol, gives a particular safety message
[ISO 17724:2003, 68]
3.8
sign height
diameter of a circular geometric shape or height of a rectangular or triangular geometric shape of the type of
safety sign
NOTE Any outer border to the safety sign is excluded. See ISO 3864-1.
4 Guidance for selection and siting of signs and flags
4.1 Guidance for risk assessment
Selection and use shall be determined following the results of a risk assessment. The risk assessment should
take into account the following specific issues:
a) hazards and associated risks of the aquatic environment;
b) regulations or legislation;
c) operation and management of the aquatic environment;
d) users and their foreseeable behaviour.
2 © ISO 2008 – All rights reserved
In specific situations, other issues may have to be considered in a risk assessment.
NOTE The users can be in unfamiliar environments, not wearing their normal sight correction lenses, or in bare feet.
As the result of the risk assessment, a comprehensive statement of requirements should be prepared and
used as the basis for the detailed design and specification for the selection and use of signs and flags.
4.2 Siting
4.2.1 Water safety signs and multiple signs
Th
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