ISO/FDIS 20288

• Abstract:

  This document specifies minimum requirements and test methods for systems recognizing involuntarily submersion of humans in managed public aquatic facilities. It specifies the function, operation and performance of systems recognizing involuntarily submersion of humans in managed public aquatic facilities. It is applicable to managed aquatic facilities as indoor pool, outdoor pools and free water pools.

• Status: Not Published
• ICS: 97.220.10 - Sports facilities
• Technical Committee: ISO/TC 83 - Sports and other recreational facilities and equipment
• Drafting Committee: ISO/TC 83 - Sports and other recreational facilities and equipment
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 15-Sep-2026
• Completion Date: 15-Sep-2026

Overview

ISO/FDIS 20288 sets out the minimum requirements and test methods for systems designed to recognize involuntary submersion of humans in managed public aquatic facilities. This international standard aims to enhance safety in public swimming pools and similar environments by providing clear guidelines for systems that support early detection of pre-drowning behaviours. The document addresses both the operational performance and the technical testing procedures for these systems, with a focus on supporting-rather than replacing-competent lifeguard supervision.

ISO/FDIS 20288 applies to managed aquatic facilities including indoor pools, outdoor pools, and natural pools. The standard defines requirements for system effectiveness, reliability, training, and maintenance to facilitate consistent safety practices worldwide.

Key Topics

• System requirements: Minimum functional, operational, and performance criteria for systems recognizing involuntary submersion events.
• Pre-drowning behaviour recognition: Identification of key behavioural patterns that precede drowning incidents, including submersion with struggle, submersion without struggle, and inactive person at the water surface.
• Testing and validation: Repeatable and reproducible test procedures to confirm that systems effectively detect pre-drowning behaviours across pool coverage areas.
• Technical studies and documentation: Procedures for technical evaluation prior to installation, considering pool layout, water conditions, lighting, occupancy, and operational practices.
• Training and competency: Requirements for initial and ongoing training for pool staff to ensure proper system usage and emergency response.
• Maintenance and monitoring: Regular servicing schedules and continuous monitoring to maintain system performance and reliability.

Applications

The adoption of ISO/FDIS 20288 delivers practical value in a variety of aquatic settings:

• Public swimming pools: Indoor and outdoor facilities benefit from automated systems that recognize involuntary submersion, providing an additional layer of safety.
• Natural and free water pools: Managed natural swimming areas can apply these systems to mitigate drowning risks in diverse environments.
• Sports and recreation facilities: Complexes hosting aquatic sports or events can leverage standardized detection methods to enhance safety protocols and meet regulatory requirements.
• Waterparks and leisure centers: Large, busy venues can supplement lifeguard coverage with compliant detection technology as part of an integrated safety management plan.

ISO/FDIS 20288 supports operators and managers by offering a structured framework for selecting, installing, and operating systems that aim to detect potential drowning events with higher accuracy and timeliness. Importantly, the standard reinforces that such systems are intended to support, not substitute, human surveillance-a principle that underpins safe aquatic facility management.

Related Standards

Organizations implementing ISO/FDIS 20288 may also reference the following related standards to ensure comprehensive safety coverage:

• ISO 20380: Public swimming pools-Computer vision systems for the detection of drowning accidents in swimming pools-Safety requirements and test methods.
• EN 15288-1:2019+A1:2025: Swimming pools for public use-Part 1: Safety requirements for design.
• ISO 20712-3: Water safety signs and beach safety flags-Part 3: Guidance for use.

By aligning with ISO/FDIS 20288 and associated standards, facilities can adopt internationally recognized best practices for aquatic safety, risk management, and incident response using the latest sensor and detection technologies. This approach ensures robust, documented, and effective integration of human and technical resources for the protection of public health and safety in managed aquatic environments.

FINAL DRAFT
International
Standard
ISO/TC 83
Public swimming pools — Systems
Secretariat: DIN
recognizing involuntary submersion
Voting begins on:
of humans in managed aquatic
2026-09-15
facilities
Voting terminates on:
2026-11-10
Piscines publiques — Systèmes reconnaissant l'immersion
involontaire d'êtres humains dans des installations aquatiques
gérées
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
International
Standard
ISO/TC 83
Public swimming pools — Systems
Secretariat: DIN
recognizing involuntary submersion
Voting begins on:
of humans in managed aquatic
facilities
Voting terminates on:
Piscines publiques — Systèmes reconnaissant l'immersion
involontaire d'êtres humains dans des installations aquatiques
gérées
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2026
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 2
5 Pre-drowning behaviours . . 3
5.1 General .3
5.2 Submersion with struggle .3
5.3 Submersion without struggle .3
5.4 Inactive person at the water surface .3
6 System requirements . 3
6.1 Technical study .3
6.1.1 General .3
6.1.2 Design information .3
6.1.3 Operational information .4
6.1.4 Technical information . .4
6.1.5 Performance information .4
6.2 System performance .5
7 Testing. 5
7.1 General .5
7.2 Test subject .5
7.2.1 General .5
7.2.2 Test with a human .6
7.2.3 Test with a manikin .6
7.3 Coverage areas . .6
7.4 Test procedures .8
7.4.1 Submersion with struggle .8
7.4.2 Submersion without struggle .8
7.4.3 Inactive person at the water surface .8
7.4.4 Test result .9
8 Test report . 9
9 Training . 9
10 Maintenance . 9
Annex A (informative) Test report .11
Annex B (informative) Additional variations of pre-drowning behaviour .13
Annex C (informative) Manikin test procedures . 14
Bibliography .16

iii
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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of 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 www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 83, Sports and other recreational facilities and
equipment.
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
Introduction
Lifeguards can supervise swimming pools, identify hazards and educate swimmers to help ensure their
safety, and in the event of an emergency intervene early to prevent an accident from occurring or perform a
rescue.
The use of technology to help lifeguards detect incidents in swimming pools has grown in recent years.
For several reasons (physiological, cognitive, architectural, organisational, etc.), lifeguards can sometimes
find it difficult to identify hazards and foresee incidents. Technology can assist lifeguards in identifying
hazards.
This document defines the requirements and test methods for systems designed for recognising involuntary
submersion at the beginning and throughout the incident trajectory, before the victim is stationary on the
bottom.
The goal of ISO 20380 is to trigger an alarm at the end of the incident trajectory after detection of a stationary
solid mass at the bottom of the pool basin.
This document and ISO 20380 can be used separately or in parallel. Neither human observation or
technology can guarantee 100 % effectiveness and reliability. Systems recognizing involuntary submersion
of humans are foreseen to support the competent person. These systems do not save people, as saving a
victim of involuntary submersion necessarily requires human intervention.
Within this document, certain techniques are mentioned such as video and artificial intelligence (AI) as they
are currently common solutions. However, any other techniques that can fulfil the requirements are valid.

v
FINAL DRAFT International Standard ISO/FDIS 20288:2026(en)
Public swimming pools — Systems recognizing involuntary
submersion of humans in managed aquatic facilities
1 Scope
This document specifies minimum requirements and test methods for systems recognising involuntary
submersion of humans in managed public aquatic facilities.
It specifies the function, operation and performance of systems recognising involuntary submersion of
humans in managed public aquatic facilities.
It is applicable to managed aquatic facilities such as indoor pool, outdoor pools and natural pools.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
aquatic facility
indoor pool (3.3), outdoor pool (3.4) or natural pool (3.5)
3.2
pool
swimming pool
facility, with one or more water areas, intended for swimming, leisure or other water-based physical
activities
[SOURCE: EN 15288-1:2019+A1: 2025, 3.1]
3.3
indoor swimming pool
indoor pool
constructed water area for bathing enclosed in a building, covered by a roof (fixed or moveable)
3.4
outdoor swimming pool
outdoor pool
constructed open-air water area for bathing
3.5
natural pool
natural water body (e.g. lakes, rivers, splash pool) having a defined area for swimming as distinct from other
recreational water activities (e.g. boating, canoeing, fishing)

3.6
drowning
process of experiencing respiratory impairment from submersion or immersion in liquid the consequence of
which is classified as death, morbidity and no morbidity
3.7
competent person
designated individual who has acquired through training, qualifications or experience, or a combination of
these, the knowledge and skills enabling them to perform a specified task
[SOURCE: ISO 20380:2017, 3.6]
3.8
pre-drowning behaviour
human behaviours occurring before final submersion which could lead to a drowning (3.6) accident
3.9
involuntary submersion
unintentional submersion which could lead to drowning (3.6)
3.10
notification
method to inform a system user of a recognition
3.11
true notification
notification (3.10) corresponding to the recognition of an instance of pre-drowning behaviour (3.8) according
to the conditions and definitions described in this document
3.12
false notification
notification (3.10) that is not a true notification (3.11)
3.13
representative pool
pool (3.2) for a laboratory test that is a minimum of 25 m long and 10 m wide, and a minimum water depth of
1,8 m for at least one third of the pool basin (3.15)
3.14
commissioning phase
time from when the system installation started, to when the supplier confirms the system meets all the
requirements of this document
3.15
pool basin
water tank where water-related activities can take place
[SOURCE: ISO 20712-3:2022, 3.5]
4 General
This document defines minimal performance requirements. Knowing that all systems have limits, these
limits shall be identified and described by the manufacturer.
Installation and use of systems recognizing involuntary submersion of humans cannot serve as a reason to
reduce human monitoring of swimming pools, unless a robust risk assessment does indicate this is possible
without compromising safety, with reference to applicable national regulations, if any.

5 Pre-drowning behaviours
5.1 General
The recognition of pre-drowning behaviours by a system requires identifying important criteria for
situations that could lead to a drowning. A system shall first recognise and identify behaviours that are
a precursor to a drowning situation. People at risk of a drowning can exhibit distinct behaviours to other
persons in the vicinity. Reasonably foreseeable behaviours that could lead to a potential drowning should be
defined.
A great variety of possible pre-drowning behaviours exist. Not all can be considered when defining the tests
in this document. Examples of behaviours excluded from the testing procedure are described in Annex B.
The different variants of pre-drowning behaviours that are tested according to this document are described
in 5.2, 5.3 and 5.4.
5.2 Submersion with struggle
Submersion with struggle is demonstrated by a person in the pool basin, with a horizontal displacement
smaller than 2 m, moving up and down, having head submerged at least 3 times with at least 30 s of
cumulated time underwater over the course of 45 s.
5.3 Submersion without struggle
Submersion without struggle is demonstrated by a person submerging in the pool basin and remaining
submerged below the water surface and above the bottom of the pool for 30 s, with a horizontal displacement
smaller than 3 m.
5.4 Inactive person at the wa
...

ISO/TC 83
Secretariat: DIN
Date: 2026-06-2108-31
Public swimming pools — Systems recognizing involuntary
submersion of humans in managed aquatic facilities
Piscines publiques — Systèmes reconnaissant l'immersion involontaire d'êtres humains dans des installations
aquatiques gérées
FDIS stage
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 on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 3
5 Pre-drowning behaviours . 3
5.1 General . 3
5.2 Submersion with struggle . 3
5.3 Submersion without struggle . 3
5.4 Inactive person at the water surface . 3
6 System requirements . 3
6.1 Technical study . 3
6.2 System performance . 5
7 Testing . 5
7.1 General . 5
7.2 Test subject . 6
7.3 Coverage areas . 7
7.4 Test procedures . 10
8 Test report . 10
9 Training . 11
10 Maintenance . 11
Annex A (informative) Test report . 12
Annex B (informative) Additional variations of pre-drowning behaviour . 15
Annex C (informative) Manikin test procedures . 16
Bibliography . 18

iii
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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of 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 www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 83, Sports and other recreational facilities and
equipment.
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
Introduction
Lifeguards can supervise swimming pools, identify hazards and educate swimmers to help ensure their safety,
and in the event of an emergency intervene early to prevent an accident from occurring or perform a rescue.
The use of technology to help lifeguards detect incidents in swimming pools has grown in recent years.
For several reasons (physiological, cognitive, architectural, organisational, etc.), lifeguards can sometimes find
it difficult to identify hazards and foresee incidents. Technology can assist lifeguards in identifying hazards.
This document defines the requirements and test methods for systems designed for recognising involuntary
submersion at the beginning and throughout the incident trajectory, before the victim is stationary on the
bottom.
The goal of ISO 20380is 20380 is to trigger an alarm at the end of the incident trajectory after detection of a
stationary solid mass at the bottom of the pool basin.
This document and ISO 20380 can be used separately or in parallel. Neither human observation or technology
can guarantee 100 % effectiveness and reliability. Systems recognizing involuntary submersion of humans are
foreseen to support the competent person. These systems do not save people, as saving a victim of involuntary
submersion necessarily requires human intervention.
Within this document, certain techniques are mentioned such as video and artificial intelligence (AI) as they
are currently common solutions. However, any other techniques that can fulfil the requirements are valid.
v
FINAL DRAFT International Standard ISO/FDIS 20288:2026(en)

Public swimming pools — Systems recognizing involuntary
submersion of humans in managed aquatic facilities
1 Scope
This document specifies minimum requirements and test methods for systems recognising involuntary
submersion of humans in managed public aquatic facilities.
It specifies the function, operation and performance of systems recognising involuntary submersion of
humans in managed public aquatic facilities.
It is applicable to managed aquatic facilities such as indoor pool, outdoor pools and natural pools.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— — ISO Online browsing platform: available at https://www.iso.org/obp
— — IEC Electropedia: available at https://www.electropedia.org/
3.1 3.1
aquatic facilitiesfacility
indoor pool (3.3,), outdoor pool (3.4) or natural pool (3.5)
3.2 3.2
pool
swimming pool
facility, with one or more water areas, intended for swimming, leisure or other water-based physical activities
[SOURCE: EN 15288-1:20182019+A1:20242025, 3.1]
3.3 3.3
indoor swimming pool
indoor pool
constructed water area for bathing enclosed in a building, covered by a roof (fixed or moveable)
3.4 3.4
outdoor swimming pool
outdoor pool
constructed open-air water area for bathing
3.5 3.5
natural pool
natural water body (e.g. lakes, rivers, splash pool) having a defined area for swimming as distinct from other
recreational water activities (e.g. boating, canoeing, fishing)
3.6 3.6
drowning
process of experiencing respiratory impairment from submersion or immersion in liquid the consequence of
which is classified as death, morbidity and no morbidity
3.7 3.7
competent person
designated individual who has acquired through training, qualifications or experience, or a combination of
these, the knowledge and skills enabling that personthem to perform a specified task
[SOURCE: ISO 20380:2017, 3.6]
3.8 3.8
pre-drowning behaviour
human behaviours occurring before final submersion which could lead to a drowning (3.6) accident
3.9 3.9
involuntary submersion
unintentional submersion which could lead to drowning (3.6)
3.10 3.10
notification
method to inform a system user of a recognition
3.11 3.11
true notification
notification (3.10) corresponding to the recognition of an instance of pre-drowning behaviour (3.8) according
to the conditions and definitions described in this document
3.12 3.12
false notification
notification (3.10) that is not a true notification (3.11)
3.13 3.13
representative pool
pool (3.2) for a laboratory test that is a minimum of 25 m long and 10 m wide, and a minimum water depth of
1,8 m for at least one third of the pool basin (3.15)
3.14 3.14
commissioning phase
time from when the system installation started, to when the supplier confirms the system meets all the
requirements of this document
3.15 3.14
pool basin
water tank where water-related activities can take place
[SOURCE: ISO 20712-3:2022, 3.5]
4 General
This document defines minimal performance requirements. Knowing that all systems have limits, these limits
shall be identified and described by the manufacturer.
Installation and use of systems recognizing involuntary submersion of humans cannot serve as a reason to
reduce human monitoring of swimming pools, unless a robust risk assessment does indicate this is possible
without compromising safety, with reference to applicable national regulations, if any.
5 Pre-drowning behaviours
5.1 General
The recognition of pre-drowning behaviours by a system requires identifying important criteria for situations
that could lead to a drowning. A system shall first recognise and identify which behaviours that are a precursor
to a drowning situation. People at risk of a drowning can exhibit distinct ways that are not uniquebehaviours
to other persons in the same vicinity. Reasonably foreseeable behaviours that could lead to a potential
drowning should be defined.
A great variety of possible pre-drowning behaviours exist. Not all can be considered when defining the tests
in this document. Examples of behaviours excluded from the testing procedure are described in Annex BAnnex
B.
The different variants of pre-drowning behaviours that are tested according to this document are described
in 5.25.2, 5.3, 5.3 and 5.45.4.
5.2 Submersion with struggle
Submersion with struggle is demonstrated by a person in the pool basin, with a horizontal displacement
smaller than 2 m, moving up and down, having head submerged at least 3 times with at least 30 s of cumulated
time underwater over the course of 45 s.
5.3 Submersion without struggle
Submersion without struggle is demonstrated by a person submerging in the pool basin and remaining
submerged below the water surface and above the bottom of the pool for 30 s, with a horizontal displacement
smaller than 3 m.
5.4 Inactive person at the water surface
An inactive person is demonstrated by their torso mainly at the water surface, face down in the water, without
apparent movement and with a horizontal displacement smaller than 2 m over the course of 45 s.
6 System requirements
6.1 Technical study
6.1.1 General
Prior to any installation of a system recognising involuntary submersion, a technical study shall be carried out
by the supplier in consultation with the facility owner or operator.
Depending on the system proposed, the technical study is used to quantify and to position the equipment
making up the system, such as sensor devices, computing hardware and software, notification tools and
related equipment, in a document. The technical study shall be provided to the responsible parties (e.g. facility
owner or operator) by the manufacturer.
6.1.2 Design information
The design of a swimming pool has a great influence on the operation of the pool.
Supervision of a pool depends on design factors such as the ability to see above and below the water surface,
the layout of the pool or equipment that could restrict the view of the supervision staff.
The following information shall be provided by the owner or operator of the pool:
— — type of pool (e.g. indoor pool, outdoor pool or natural pool);
— — presence of specific equipment: (moveable floor, moveable bulkhead, wave machine and all
equipment able to generate water movement;);
— — texture and colour of the pool basin lining, e.g. tiling, stainless steel, PVC, resin;
— — layout of the swimming pool, especially regarding the positions of pool basins;
— — position, size and layout of windows;
— — position, size and layout of underwater observation features;
— — obstructions in the view of the system;
— — depths of the pool basin;
— — pool attractions, e.g. waterslide;
— — existence of water features such as(e.g. jets, fountains, streams, waterfalls, etc.) that can introduce
turbidity, bubbles or movement of the water.
6.1.3 Operational information
The deployment of a system to recognize involuntary submersion also depends on the operational conditions
in a swimming pool.
The following information shall be provided by the operator prior to the installation of the system:
— — pool basin occupancy;
— — type of use;
— — number and location of lifeguards;
— — special user groups, e.g. underwater sports, aqua fitness.
6.1.4 Technical information
The following technical information shall be provided by the owner or operator:
— — water turbidity;
— — glare on the water surface;
— — reflection on the water surface;
— — turbulences in the water and at the water surface;
— — lighting conditions (daylight, artificial light);
— — type and position of installed lighting components.
6.1.5 Performance information
The following information shall be provided by the manuf
...