ISO/TR 24666

FINAL
TECHNICAL ISO/DTR
DRAFT
REPORT 24666
ISO/TC 83
Sports and recreational facilities —
Secretariat: DIN
Probes for entrapment/entanglement
Voting begins on:
2023-04-17 on playground equipment —
Collection of data
Voting terminates on:
2023-06-12
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
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/DTR 24666:2023(E)
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. © ISO 2023

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FINAL
TECHNICAL ISO/DTR
DRAFT
REPORT 24666
ISO/TC 83
Sports and recreational facilities —
Secretariat: DIN
Probes for entrapment/entanglement
Voting begins on:
on playground equipment —
Collection of data
Voting terminates on:
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DOCUMENTATION.
Phone: +41 22 749 01 11
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: copyright@iso.org
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/DTR 24666:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
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NATIONAL REGULATIONS. © ISO 2023

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ISO/DTR 24666:2023(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Rationale for anthropometrics and scoping of intended user groups in developing
safety standards to reduce serious injury. 1
4.1 ASTM F1487-21 (US) standard consumer safety performance specification for
playground equipment for public use . 1
4.1.1 Reference document for anthropometry . 1
4.1.2 Defined age groups . 2
4.2 ASTM F2373-11 (US) standard consumer safety performance specification for
public use play equipment for children 6 months to 23 months . 2
4.2.1 Reference document for anthropometry . 2
4.2.2 Defined age groups . 2
4.3 U. S. consumer product safety commission handbook for public playground 2010
(US) . 2
4.3.1 Reference document for anthropometry . 2
4.3.2 Defined age groups . 2
4.4 EN 1176-1:2017 (European Union) Playground equipment and surfacing . 3
4.4.1 Reference document for anthropometry . 3
4.4.2 Defined age groups . 3
4.5 AS 4685.1:2021 (Australia) Playground equipment and surfacing . 3
4.6 CSA Z614-20 (Canada) Children’s playspaces and equipment . 3
4.6.1 Reference document for anthropometry . 3
4.6.2 Defined age groups . 3
4.7 JPFA-SP-S: 2014 (JAPAN) standard on playground equipment safety and its
annex 2: playground equipment for toddlers aged under 3 . 3
4.7.1 Reference document for anthropometry . 3
4.7.2 Range of age and size. 3
4.8 SS 457:2017 (Singapore) Specification for playground equipment for public use . 4
4.8.1 Reference document for anthropometry . 4
4.8.2 Defined age groups . 4
4.9 MS 966:2017 (Malaysia) Playground equipment – Safety performance for public
use – Specification . 4
4.9.1 Reference document for anthropometry . 4
4.9.2 Defined age groups . 4
5 International inventory of probes/gauges and test method procedures used to
identify specific playground equipment safety hazards . 4
5.1 International inventory of probes/gauges and test method procedures . 4
5.2 Probes and gauges figures . 7
6 Summary . 7
Annex A (informative) Completely bound opening head entrapment . 8
Annex B (informative) Partially bounded opening head/neck entrapment .13
Annex C (informative) Protrusion hazard impalement .15
Annex D (informative) Impalement from projections on suspended components .17
Annex E (informative) Common crush and shear hazard (between one or more moving
accessible components) .18
Annex F (informative) Finger entrapment (gaps, opening and holes) .19
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ISO/DTR 24666:2023(E)
Annex G (informative) Entanglement hazards .20
Annex H (informative) Hazard Test for Toddlers .23
Annex I (normative) Finger entrapment (gaps, opening, hinged objects, and holes) .26
Bibliography .27
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ISO/DTR 24666:2023(E)
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 document 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.
This second edition cancels and replaces the first edition (ISO/TR 24666:2022), which has been
technically revised.
The main changes are as follows:
— amendment of Table 1;
— amendment of Clause 6;
— amendment of Table A.5;
— amendment of Table B.2;
— amendment of Table C.2;
— amendment of Table F.1;
— amendment of Table G.3;
— inclusion of new Annex I;
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.
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ISO/DTR 24666:2023(E)
Introduction
This document summarizes information about different regional and national standards on playground
safety in order to provide a reference point for different types of entrapments and probes/gauges.
Some standards apply to entrapment tests universally, regardless of the intended user age group, on the
basis that it is very difficult to control users when products are installed in a free access environment.
Other standards apply to specific entrapment probe tests related to specific intended user age groups.
For cases where user age references are provided in the standard, see Annex A to Annex H.
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TECHNICAL REPORT ISO/DTR 24666:2023(E)
Sports and recreational facilities — Probes for
entrapment/entanglement on playground equipment —
Collection of data
1 Scope
This document compiles a collection of different probes/gauges for assessing common playground
equipment safety performance to eliminate known safety hazards such as entrapment and entanglement
hazards on playground, playspaces, and associated equipment used in different countries/regions
around the world. It also explains some historical content of origins, the purpose and some rationales
for the dimensions and shape of each of those probes.
These test probes and gauges, their dimensions and related historic rationale for their existence
are applicable to playground equipment manufacturers, designers, installers, assemblers, owners,
operators and inspectors alike and are necessary tools to the reduction of serious, life-threatening and
debilitating injuries to the public playground intended users.
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/TR 20183, Sports and other recreational facilities and equipment — Injury and safety definitions and
thresholds — Guidelines for their inclusion in standards
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/TR 20183 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/
4 Rationale for anthropometrics and scoping of intended user groups in
developing safety standards to reduce serious injury
4.1 ASTM F1487-21 (US) standard consumer safety performance specification for
playground equipment for public use
4.1.1 Reference document for anthropometry
Reference document for anthropometry – Anthropometry of Infants, Children, and Youths to age 18 for
[12]
Product Safety Design .
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ISO/DTR 24666:2023(E)
4.1.2 Defined age groups
The range of age and size users encompassed by this consumer safety performance specification is the
th th
5 percentile 2-year-old to the 95 percentile 12-year-old:
th
a) maximum user — 12-year-old child; measurement characteristics are the 95 percentile values for
combined sexes;
th
b) minimum user — 2-year-old child; measurement characteristics are the 5 percentile values for
combined sexes;
c) age groupings —preschool (2 years to 5 years), school age (5 years to 12 years), and (2 years to
12 years).
4.2 ASTM F2373-11 (US) standard consumer safety performance specification for
public use play equipment for children 6 months to 23 months
4.2.1 Reference document for anthropometry
Reference document for anthropometry – Anthropometry of Infants, Children, and Youths to age 18 for
[12]
Product Safety Design .
4.2.2 Defined age groups
The range of age and size users encompassed by this consumer safety performance specification is the
th th
5 percentile 6­month­old to the 95 percentile 23­month­old:
th
a) maximum user — 23-month-old child; measurement characteristics are the 95 percentile values
for combined sexes;
th
b) minimum user — 6­month­old child; measurement characteristics are the 5 percentile values for
combined sexes;
c) age groupings — toddler (6 months to 23 months).
4.3 U. S. consumer product safety commission handbook for public playground 2010
(US)
4.3.1 Reference document for anthropometry
Reference document for anthropometry – Anthropometry of Infants, Children, and Youths to age 18 for
[12]
Product Safety Design .
4.3.2 Defined age groups
th
The range of age and size users encompassed by this consumer safety guideline is the 5 percentile
th
2-year-old to the 95 percentile 12-year-old:
th th
a) school–age user – 5 percentile 2-year-old to 95 percentile 12-year-old child, measurement
characteristic values for combined sexes;
th th
b) preschool user – 5 percentile 2-year-old to 95 percentile 5-year-old child, measurement
characteristic values for combined sexes;
th th
c) toddler – 5 percentile 6­month­old to 95 percentile 23­month­old child, measurement
characteristic values for combined sexes.
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ISO/DTR 24666:2023(E)
4.4 EN 1176-1:2017 (European Union) Playground equipment and surfacing
4.4.1 Reference document for anthropometry
The base anthropometric data used in Europe is:
a) S A E S P ­ 450: 1977;
b) DIN 33402­2:2005.
Both sources are shown aligned with each other for any given body dimension. The data are presented
as a condensed set of tables giving minimum and maximum values for common body dimensions.
4.4.2 Defined age groups
There is no defined age range in EN 1176-1:2017.
4.5 AS 4685.1:2021 (Australia) Playground equipment and surfacing
NOTE AS 4685.1:2021 is significantly harmonized with the EN 1176-1:2017.
For reference document for anthropometry, see 4.4.1.
4.6 CSA Z614-20 (Canada) Children’s playspaces and equipment
4.6.1 Reference document for anthropometry
Reference document for anthropometry – Anthropometry of Infants, Children, and Youths to age 18 for
[12]
Product Safety Design .
4.6.2 Defined age groups
th
The range of age and size users encompassed by this standard is the dimensions of the 95 percentile
th
18­month­old to the 95 percentile 12-year-old.
4.7 JPFA-SP-S: 2014 (JAPAN) standard on playground equipment safety and its annex 2:
playground equipment for toddlers aged under 3
4.7.1 Reference document for anthropometry
Diagram of measurements (preschool-age) and data for 1-year olds to 6-year olds from the development
[13]
of child anthropometric database and simulation technology for human injury .
[15]
Data for 10-year and 12-year-old from AIST Japanese Body Dimension Data, 1997-98 .
Diagram of measurements (school age) from Compact Compendium of Architectural Design References
[14]
(1996) .
[16]
Part of data for 3-year olds from Infant/Toddler Body Measurements Report (1973) .
[17]
Part of data for 6-year olds from Anthropometric Charts and Table (1970) .
4.7.2 Range of age and size
The range of age and size users encompassed by the consumer safety performance standard, JPFA -SF
-S: 2014, are based on the median size (average by age) of pre-school children ages 3 to 6 years and
elementary school students around the ages of 6 to 12 years. CSA Z614, ASTM F1487, ASTM F2373 and
CPSC Handbook on Public Playground Safety recommend supervision for children from 3 to 6 years and
that children under 3-years-old be accompanied by a guardian at all times when using public parks.
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ISO/DTR 24666:2023(E)
4.8 SS 457:2017 (Singapore) Specification for playground equipment for public use
4.8.1 Reference document for anthropometry
Reference document for anthropometry – Anthropometry of Infants, Children, and Youths to age 18 for
[12]
Product Safety Design .
4.8.2 Defined age groups
th th
Children age and size based on 5 percentile 2-year-old to 95 percentile 12-year-old.
4.9 MS 966:2017 (Malaysia) Playground equipment – Safety performance for public use
– Specification
4.9.1 Reference document for anthropometry
Reference document for anthropometry – Anthropometry of Infants, Children, and Youths to age 18 for
[12]
Product Safety Design .
4.9.2 Defined age groups
th th
Children age and size based on 5 percentile 2-year-old to 95 percentile 12-year-old.
5 International inventory of probes/gauges and test method procedures used to
identify specific playground equipment safety hazards
5.1 International inventory of probes/gauges and test method procedures
See Table 1.
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ISO/DTR 24666:2023(E)
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Table 1 — International inventory of probes/gauges and test method procedures used to identify specific playground equipment safety
hazards
Probes ASTM F 1487- ASTM 2373-11 AS 4685.1:2021 CPSC 2010 CSA Z614-20 EN 1176- MS 966:2017 SS 457:2017
21 and Handbook 1:2017
JPFS-SP-S:2014
AS 4685.6:2021
#325 EN1176-
6:2017+AC:2019
Head – Clause 6.1, Clause 6.1.1 to Clause Clauses 3.3, and Clauses 12.2.2, Clause 4.2.7.2 Clause 4.4.1; Clause 6.1.1 to Clause 6.1.1 to
completely Figures A.1.1 6.1.2, Fig­ 4.2.7.2 and 3.3.1, Appen­ 12.2.3 and Figure 4.4.1 (1) Clause 6.1.3, Clause 6.1.3,
bound to A.1.3 ure A.1.3 Annex D.2.1 dix B.2.4, B.2.5 Annex D.2.1.2 to (5) Figure 1 to 3 Figure A.1.1 to
Figure 3, Fig­
Figure A1.3
(Head and ure 4
feet first)
Clauses 6.1.3, Clause 6.1.3 to Clause 4.2.7.2 Clause 3.3.2, Ap­ Clause 12.2.4, Clause 4.2.7.2 Clause 4.4.2; Clause 6.1.4, Clause 6.1.4,
Head –
6.1.4.1 to 6.1.4, Fig­ and pendix B.2.5.6 12.2.5 and Figures 4.4.2 Figure 4 to 9 Figure A.1.4
Partly
6.1.4.7, Fig­ ures A.1.4 to Annex D.2.2 Annex D.2.2.2 (1) to (4) to A1.9
bound
Figure 5, Fig­
ures A1.4 to A.1.8
(neck) ure 6
A.1.9
Clause 6.4, Clause 6.4, Clause 4.2.7.3 Clause 3.2, Ap­ Clause 12.4 Clause 4.2.7.3 Clause 4.4.4; ­ Clause 6.4,
Figure A1.14 to Figures A.1.09, and Annex D.3 pendix B.2.3 and Figures 4.4.4 Figures A.1.14
Clothing Figure 7 to
A.1.19 A.1.10, A.1.13 to Annex D.3.2.1 (1) to (2) and to A1.19
entangle-
Figure 18
A.1.17 Clause 4.4.6;
ment
Figures 4.4.6
(1) to (3)
­ ­ Clause 4.2.7.4 ­ ­ Clause 4.2.7.4 Clause 4.4.8; ­ ­
Figures 4.4.8
NO PROBE NO PROBE
and 4.4.9; Fig­
Full Body
ure 4.4.9
NO PROBE
­ ­ Clause 4.2.7.5 ­ ­ 4.2.7.5 NO Clause 5.11.1, ­ ­
Foot and
PROBE paragraph 6;
Leg en-
NO PROBE
Figure 5.11.1
trapment
(5)
Finger en- ­ Clause 6.5.2, Clause 4.2.7.6 ­ ­ 4.2.7.6 and Clause 4.4.3; ­ ­
trapment Figure A.1.18 and Annex D.4 Annex D.4.2 Figure 4.4.3
Crush Clause 6.5 Clause 6.5, Clause 4.2.6 Clauses 3.1, 5.3 Clause 12.5 4.2.6 and Clause 5.11.1 Clause 6.5, Clause 6.5, Fig­
and Shear Figures A.1.13 and 4.2.7.2 4.2.7.2 paragraphs 1 Figure 20 ure A.1.20
Figure 19
Hazard/ to A1.16 to 8; Fig­
NO PROBE NO PROBE
Variable ure 5.11.1 (1)
gaps to (5)
NO PROBE

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ISO/DTR 24666:2023(E)
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Table 1 (continued)
Probes ASTM F 1487- ASTM 2373-11 AS 4685.1:2021 CPSC 2010 CSA Z614-20 EN 1176- MS 966:2017 SS 457:2017
21 and Handbook 1:2017
JPFS-SP-S:2014
AS 4685.6:2021
#325 EN1176-
6:2017+AC:2019
Protrusion Clause 6.3, Clauses 6.3, Clause 4.6 & 4.7 Clauses 3.2, 5.3, Clause 12.3.3 Clauses 4.6 & Clause 4.4.5; Clause 6.3, Fig­ Clauses 6.3,
Figure A.1.10 A.1.9 to A.1.12 and Annex E Appendix B.1, 4.7 and Annex E Figure 4.4.5 ures 10 to 13 A.1.10 to A.1.13
Figure 7, Fig­
to A.1.13 (part 6) B.2.1 (part 6)
ure 8
Figure 11, Fig­
ure 12
Sharp Clauses 3.1.37, Clause 17, 6.2 Clause 4.2.5 Clauses 3.4, Clauses 12.3.1, Clause 4.4.7 Clauses 3.36, Clauses 6.2,
Points or 3.1.37.1 3.1.38, 5.3.6.4 12.3.2, 12.3.4 3.37 3.1.37, 3.1.38
Edges 6.2

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ISO/DTR 24666:2023(E)
5.2 Probes and gauges figures
See Annex A to Annex H.
6 Summary
This “tool box” of probes and gauges can continue to be a collaborative effort and can be used to
assist standards development organizations working in playgrounds and related activities around the
world. To ensure accuracy in measuring for conformity, the probes and gauges are calibrated by the
manufacturer at the time of purchase and dimensions are checked for accuracy by the operator at least
once every 12 months.
Having a consolidated document listing similar probes and gauges used in 9 different national and
regional standards, as well as probes and gauges that are different amongst standards, can assist
standards writers, designers, instructors, and manufacturers. It helps those wishing to produce
products for a variety of international markets and enables them to easily ascertain the differences
between multiple standards.
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ISO/DTR 24666:2023(E)
Annex A
(informative)

Completely bound opening head entrapment
A.1 Feet first entry
Figure A.1 shows the probe (large head) used in North America and some regions in the Asia-Pacific
area. It applies to playgrounds, ASTM 2-12, Canada 18 months to 12 months. Table A.1 provides an
overview of references to large head probe in North America and Asia-Pacific area.
Dimensions in millimetres
Key
1 handle
Figure A.1 — Large head probe with 228,6 mm diameter
Table A.1 — Overview of references to large head probe in North America and Asia Pacific area
Country US US US Canada Singapore Malaysia
Standard ASTM F1487­21 ASTM F2373­ CPSC Doc.325­ CSA­Z614­20 SS 457:2017 MS 966:2017
11 10
Clause 6.1.1.1, 6.1.2 6.1, 6.1.1.1, B.2.4 and B.3.3 12.2.2.2, 6.1.1 to 6.1.3 _
6.1.2, 6.1.2.1, 12.2.3.1,12.2.4.3,
6.1.3, 6.1.4.2 12.5.5
Figure Figure A.1.3 Figure A.1.3 Figure B.8 Figure 4 6.1, 6.1.1.1, 6.1, 6.1.1.1,
Figure A.1.3 Figure 3
Age range 2 years to 12 6 months to 23 0,5 years to 12 1,5 years to 12 2 years to 12 2 years to 12
years months years years years years
Figure A.2 shows the probe (large head) used in Europe and Australia. Table A.2 provides an overview
of references to large head probe in Europe and Australia.
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ISO/DTR 24666:2023(E)
Dimensions in millimetres
Key
1 handle
Figure A.2 — Universal large head probe with 230 mm diameter
Table A.2 — Overview of references to large head probe in Europe and Australia
Country/Region Australia Europe
Standard AS 4685.1:2021 EN 1176­1:2017
Clause 4.2.7.2 and Annex D.2 4.2.7.2 and Annex D
Figure Figure D.1, Probe D Figure D.1, Probe D
Age range all ages all ages
Figure A.3 shows the probe (small head) used in Europe and Australia. Table A.3 provides an overview
of references to small head probe in Europe and Australia.
Dimensions in millimetres
Key
1 handle
Figure A.3 — Small head probe with 130 mm diameter
Table A.3 — Overview of references to small head probe in Europe and Australia
Country/Region Australia Europe
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ISO/DTR 24666:2023(E)
TTabablele A A.33 ((ccoonnttiinnueuedd))
Standard AS 4685.1:2021 EN 1176­1:2017
Clause 4.2.7.2 and Annex D.2 4.2.7.2
Figure Figure D.1 and Probe E Figure D.1, Probe E
Age range all ages all ages
A.2 Head and feet first entry
Figure A.4 shows the probe used in Japan. Table A.4 provides an overview of references to small head
probe in Japan.
Dimensions in millimetres
Key
1 handle
Figure A.4 — Large and small head probe with 230 mm and 130 mm diameters
Table A.4 — Overview of references to small head probe in Japan
Country Japan
Standard J PFA ­S P ­S: 2014
Clause 1.5.1
Figure Figure 1.5.1 (1), JPFA Inspec­
tion Tool A
Age range 3 years to 12 years
A.3 Feet first entry
Figure A.5 shows the probe used in Europe and Australia. Table A.5 provides an overview of references
to torso probe in Europe and Australia.
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ISO/DTR 24666
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