EN ISO 10256-2:2018

Protective equipment for use in ice hockey - Part 2: Head protection for skaters (ISO 10256-2:2016)

ISO 10256-2:2016 specifies performance requirements and test methods for head protectors for use in ice hockey and is intended to be read in conjunction with ISO 10256‑1.
Requirements and the corresponding test methods, where appropriate, are given for the following:
a)    construction and protected area;
b)    shock absorption;
c)    penetration;
d)    retention system properties;
e)    field of vision;
f)     marking and information.
ISO 10256-2:2016 applies to head protectors worn by
-      players other than goalkeepers, and
-      certain functionaries (e.g. referees).
NOTE 1       The requirements of a Clause take precedent over a figure.
NOTE 2       The intent of this part of ISO 10256 is to reduce the risk of injury to the head without compromising the form or appeal of the game.

Schutzausrüstung zum Gebrauch beim Eishockey - Teil 2: Kopfschutz für Eisläufer (ISO 10256-2:2016)

Dieser Teil der ISO 10256 legt Leistungsanforderungen und Prüfverfahren für Kopfschützer zum Gebrauch beim Eishockey fest und ist vorgesehen, in Verbindung mit ISO 10256 1 gelesen zu werden.
Anforderungen und entsprechende Prüfverfahren, wo anwendbar, sind für folgende Punkte festgelegt:
a)   Konstruktion und geschützter Bereich;
b)   Stoßdämpfung;
c)   Durchdringung;
d)   Eigenschaften der Trageeinrichtung;
e)   Sichtfeld;
f)   Kennzeichnung und Information.
Dieser Teil der ISO 10256 gilt für Kopfschützer, die von
—   Spielern, ausgenommen Torwarte, und
—   bestimmten Funktionären (z. B. Schiedsrichter) getragen werden.
ANMERKUNG 1   Die in einem Abschnitt angegebenen Anforderungen haben Vorrang vor einem Bild.
ANMERKUNG 2   Der Zweck dieses Teils der ISO 10256 ist die Verringerung des Risikos von Kopfverletzungen, ohne die Form oder die Attraktivität des Spiels zu beeinflussen.

Équipements de protection destinés à être utilisés en hockey sur glace - Partie 2: Protections de tête pour les skateurs (ISO 10256-2:2016)

ISO 10256-2:2016 spécifie les exigences de performance et les méthodes d'essai applicables aux protections de tête destinées à être utilisées en hockey sur glace. Elle doit être lue en complément de l'ISO 10256‑1.
Elle établit, s'il y a lieu, des exigences et les méthodes d'essai correspondantes pour les aspects suivants:
a)    fabrication et zone protégée;
b)    absorption des chocs;
c)    pénétration;
d)    propriétés du système de rétention;
e)    champ de vision;
f)     marquage et informations.
ISO 10256-2:2016 s'applique aux protections de tête utilisées par:
-      les joueurs (à l'exception des gardiens de but); et
-      certaines autorités (par exemple, les arbitres).
NOTE 1       Les exigences d'un article prévalent sur celles d'une figure.
NOTE 2       L'objectif de la présente partie de l'ISO 10256 est de réduire le risque de blessure à la tête sans compromettre pour autant l'aspect ou l'attrait même du jeu.

Varovalna oprema za uporabo pri hokeju na ledu - 2. del: Zaščita glave za drsalce (ISO 10256-2:2016)

Ta mednarodni standard določa zahteve glede učinkovitosti in preskusne metode za ščitnike za glavo za uporabo pri hokeju na ledu, uporabljati pa ga je treba skupaj s standardom ISO 10256-1. Opomba 1: Zahteve točke imajo prednost pred številsko vrednostjo.    Opomba 2: Namen tega mednarodnega standarda je zmanjšati tveganje za poškodbe glave brez vpliva na način ali privlačnost igre. Opomba 3: Hokej na ledu je šport, ki vključuje tveganja za poškodbe.  Ta mednarodni standard je namenjen le čeladam, ki se uporabljajo pri hokeju na ledu.  Čelade za hokej na ledu ne zagotavljajo nobene zaščite pred poškodbami vratu ali hrbtenice. V skladu s tem mednarodnim standardom lahko pride do hudih poškodb glave, možganov ali hrbtenice oziroma paralize ali smrti navkljub uporabi čelade za hokej na ledu. Zahteve in ustrezne preskusne metode veljajo (kjer je to primerno) za:
a) izdelavo in pokritost; b) ublažitev udarcev;
c) prepustnost; d) lastnosti zadrževalnih sistemov; e) vidno polje; f) označevanje in podatke. Ta mednarodni standard se uporablja za ščitnike za glavo, ki jih uporabljajo:
a) igralci, ki niso vratarji; in
b) nekateri funkcionarji (npr. sodniki).

General Information

• Status: Published
• Publication Date: 30-Jul-2018
• Withdrawal Date: 30-Oct-2018
• ICS: 13.340.20 - Head protective equipment
• ICS: 97.220.20 - Winter sports equipment
• Technical Committee: CEN/TC 158 - Head protection
• Drafting Committee: CEN/TC 158/WG 7 - Head protectors for ice-hockey
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 25-Apr-2018
• Completion Date: 25-Apr-2018
• Directive: 89/686/EEC - Council Directive 89/686/EEC of 21 December 1989 on the approximation of the laws of the Member States relating to personal protective equipment
• Directive: 93/68/EEC - Council Directive amending Dir. 87/404/EEC (simple pressure vessels), 88/378/EEC (safety of toys), 89/106/EEC (construction products), 89/336/EEC (electromagnetic compatibility), 89/392/EEC (machinery), 89/686/EEC (personal protective equipment), 90/384/EEC (automatic weighing instruments), 90/385/EEC (active implantable medicinal devices), 90/396/EEC (appliances burning gaseous fuels), 91/263/EEC (telecommunications terminal equipment), 92/42/EEC and 73/23/EEC
• Directive: 93/95/EEC - Personal protective equipment (Dir. 89/686/EEC amendment)
• Directive: 96/58/EC - Personal protective equipment (Dir. 89/686/EEC amendment)
• Mandate: M/031 - Standardization mandate to CEN/CENELEC concerning standards for Personal Protective Equipment
• Mandate: M/BC/CEN/90/2 - Order for standardization concerning Personal Protective Equipment (P.P.E.)
• Ref Project: SIST EN ISO 10256-2:2018 - Protective equipment for use in ice hockey - Part 2: Head protection for skaters (ISO 10256-2:2016)

Relations

• Replaces: EN ISO 10256:2003 - Head and face protection for use in ice hockey (ISO 10256:2003)
• Effective Date: 08-Jun-2022
• Revised: prEN ISO 10256-2 - Protective equipment for use in ice hockey - Part 2: Head protection for skaters (ISO/DIS 10256-2:2021)
• Effective Date: 18-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 10256-2:2018
01-junij-2018

9DURYDOQDRSUHPD]DXSRUDERSULKRNHMXQDOHGXGHO=DãþLWDJODYH]DGUVDOFH

,62

Protective equipment for use in ice hockey - Part 2: Head protection for skaters (ISO

10256-2:2016)

Schutzausrüstung zum Gebrauch beim Eishockey - Teil 2: Kopfschutz für Eisläufer (ISO

10256-2:2016)

Équipements de protection destinés à être utilisés en hockey sur glace - Partie 2:

Protections de tête pour les skateurs (ISO 10256-2:2016)
Ta slovenski standard je istoveten z: EN ISO 10256-2:2018
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
97.220.20 Oprema za zimske športe Winter sports equipment
SIST EN ISO 10256-2:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 10256-2:2018
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SIST EN ISO 10256-2:2018
EN ISO 10256-2
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2018
EUROPÄISCHE NORM
ICS 97.220.20; 13.340.20
English Version
Protective equipment for use in ice hockey - Part 2: Head
protection for skaters (ISO 10256-2:2016)

Équipements de protection destinés à être utilisés en Schutzausrüstung zum Gebrauch beim Eishockey - Teil

hockey sur glace - Partie 2: Protections de tête pour les 2: Kopfschutz für Eisläufer (ISO 10256-2:2016)

skateurs (ISO 10256-2:2016)
This European Standard was approved by CEN on 17 September 2016.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10256-2:2018 E

worldwide for CEN national Members.
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SIST EN ISO 10256-2:2018
EN ISO 10256-2:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 10256-2:2018
EN ISO 10256-2:2018 (E)
European foreword

This document (EN ISO 10256-2:2018) has been prepared by Technical Committee ISO/TC 83 "Sports

and other recreational facilities and equipment" in collaboration with Technical Committee

CEN/TC 158 “Head protection” the secretariat of which is held by BSI.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by October 2018, and conflicting national standards shall

be withdrawn at the latest by October 2018.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 10256-2:2016 has been approved by CEN as EN ISO 10256-2:2018 without any

modification.
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SIST EN ISO 10256-2:2018
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SIST EN ISO 10256-2:2018
INTERNATIONAL ISO
STANDARD 10256-2
First edition
2016-12-01
Protective equipment for use in ice
hockey —
Part 2:
Head protection for skaters
Équipements de protection destinés à être utilisés en hockey sur
glace —
Partie 2: Protections de tête pour les skateurs
Reference number
ISO 10256-2:2016(E)
ISO 2016
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SIST EN ISO 10256-2:2018
ISO 10256-2:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland

All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved
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SIST EN ISO 10256-2:2018
ISO 10256-2:2016(E)
Contents Page

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

Introduction ..................................................................................................................................................................................................................................v

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

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Requirements .......................................................................................................................................................................................................... 4

4.1 Innocuousness ......................................................................................................................................................................................... 4

4.2 Ergonomics ................................................................................................................................................................................................ 4

4.3 Attachments .............................................................................................................................................................................................. 4

4.3.1 Optional devices ............................................................................................................................................................... 4

4.3.2 Fastener components .................................................................................................................................................. 4

4.3.3 Eye and full-face protectors .................................................................................................................................... 4

4.4 Protected area .......................................................................................................................................................................................... 4

4.4.1 Minimum protected area .......................................................................................................................................... 4

4.4.2 Ear aperture ......................................................................................................................................................................... 4

4.4.3 Ventilation openings ..................................................................................................................................................... 5

4.5 Penetration ................................................................................................................................................................................................. 5

4.6 Shock absorbing capacity .............................................................................................................................................................. 5

4.7 Retention system ................................................................................................................................................................................... 5

4.7.1 Straps ......................................................................................................................................................................................... 5

4.7.2 Extensibility and strength ........................................................................................................................................ 5

4.8 Field of vision ........................................................................................................................................................................................... 5

5 Test methods ............................................................................................................................................................................................................. 5

5.1 Sampling ....................................................................................................................................................................................................... 5

5.2 Conditioning temperatures .......................................................................................................................................................... 5

5.3 Field of vision ........................................................................................................................................................................................... 6

5.4 Helmet positioning index (HPI)................................................................................................................................................ 6

5.5 Protected area .......................................................................................................................................................................................... 6

5.6 Determination of penetration characteristics.............................................................................................................. 6

5.6.1 Test apparatus .................................................................................................................................................................... 6

5.6.2 Procedure ............................................................................................................................................................................... 6

5.7 Determination of shock absorbing capacity .................................................................................................................. 7

5.7.1 Impact sites .......................................................................................................................................................................... 7

5.7.2 Marking impact locations on headform ....................................................................................................... 7

5.7.3 Apparatus ............................................................................................................................................................................... 7

5.7.4 Procedure ............................................................................................................................................................................... 7

5.8 Determination of retention system function ................................................................................................................. 8

5.8.1 Apparatus ............................................................................................................................................................................... 8

5.8.2 Positioning ............................................................................................................................................................................ 8

5.8.3 Extensibility and releasing force ........................................................................................................................ 8

6 Test report ................................................................................................................................................................................................................... 8

7 Permanent markings ....................................................................................................................................................................................... 8

8 Information for users ...................................................................................................................................................................................... 9

Annex A (normative) Impact drop test using a free-fall test apparatus with a guided carrier ............15

Annex B (normative) Impact drop test using a guided monorail ........................................................................................19

Annex C (informative) Method for measuring field of vision ...................................................................................................23

Bibliography .............................................................................................................................................................................................................................26

© ISO 2016 – All rights reserved iii
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SIST EN ISO 10256-2:2018
ISO 10256-2:2016(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 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).

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on 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 the following URL: www.iso.org/iso/foreword.html.

The committee responsible for this document is ISO/TC 83, Sports and other recreational facilities and

equipment, Subcommittee SC 5, Ice hockey equipment and facilities.

This first edition of ISO 10256-2, together with ISO 10256-1, ISO 10256-3, ISO 10256-4, ISO 10256-5,

and ISO 10256-6 cancels and replaces the ISO 10256:2003, which has been technically revised.

ISO 10256 consists of the following parts, under the general title Protective equipment for use in ice hockey:

— Part 1: General requirements
— Part 2: Head protection for skaters
— Part 3: Face protectors for skaters
— Part 4: Head and face protection for goalkeepers
— Part 5: Neck laceration protection for ice hockey players
The following parts are under preparation:
— Part 6: Lower leg protectors for ice hockey players
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SIST EN ISO 10256-2:2018
ISO 10256-2:2016(E)
Introduction

Ice hockey is a sport in which there is a risk of injury. Ice hockey helmets afford no protection from neck

or spinal injury. Severe head, brain, or spinal injuries, including paralysis or death, can occur in spite of

using an ice hockey helmet according to this part of ISO 10256.

The intention of head protection used in ice hockey is to reduce the frequency and severity of localized

injuries to the head. The protective function is such that the force from impacts against the protector is

distributed and dampened and the penetration of objects is counteracted.

Part of the head protection for use in ice hockey consists of a helmet. To achieve the performance of

which it is capable and to ensure stability on the head, a helmet is intended to be as closely fitting as

possible consistent with comfort. In use, it is essential that the helmet is securely fastened, with any

chin strap or neck strap adjusted according to manufacturer’s instructions.

Subcommittee 5 is aware that specifications for the performance of the helmet are required to reduce

the risk of injury in ice hockey. There was consensus that most of today’s head protectors meet the

performance requirements of this part of ISO 10256. The goal of the subcommittee is to promote the

use of better materials and/or constructions as they become available to meet the future requirements

of the sport of ice hockey. Subcommittee 5 recognizes that in order to provide for comfort, fit and

use, helmets is intended to have a mass consistent with providing the appropriate performance

characteristics.
© ISO 2016 – All rights reserved v
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SIST EN ISO 10256-2:2018
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SIST EN ISO 10256-2:2018
INTERNATIONAL STANDARD ISO 10256-2:2016(E)
Protective equipment for use in ice hockey —
Part 2:
Head protection for skaters
1 Scope

This part of ISO 10256 specifies performance requirements and test methods for head protectors for

use in ice hockey and is intended to be read in conjunction with ISO 10256-1.

Requirements and the corresponding test methods, where appropriate, are given for the following:

a) construction and protected area;
b) shock absorption;
c) penetration;
d) retention system properties;
e) field of vision;
f) marking and information.
This part of ISO 10256 applies to head protectors worn by
— players other than goalkeepers, and
— certain functionaries (e.g. referees).
NOTE 1 The requirements of a Clause take precedent over a figure.

NOTE 2 The intent of this part of ISO 10256 is to reduce the risk of injury to the head without compromising

the form or appeal of the game.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 6487, Road vehicles — Measurement techniques in impact tests — Instrumentation

ISO 10256-1:2016, Protective equipment for use in ice hockey — Part 1: General requirements

EN 960:2006, Headforms for use in the testing of protective helmets
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 10256-1 and the following apply.

3.1
drop height

vertical distance between the lowest point (impact point) of the elevated helmet and the impact surface

on a drop test apparatus
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SIST EN ISO 10256-2:2018
ISO 10256-2:2016(E)
3.2
fastening system
devices used to connect the components of the helmet
3.3
field of vision

extent of vision through the protector in the “as worn” position when placed on the appropriate

headform and measured with reference to the entrance pupil of the stationary eye
3.4
goniometer

positioning device that moves the headform such that the angular rotation and movement in reference

to the corneal eye point in both the horizontal and vertical directions can be recorded

3.5
helmet

device worn on the head that is intended to reduce the risk of head injury to ice hockey participants

Note 1 to entry: Helmets can include:
a) a shock-attenuating system;
b) a retention system;
c) manufacturers’ attachments.
3.6
helmet model
category of helmets that have the same essential characteristics
Note 1 to entry: Essential characteristics include:
a) materials;
b) dimensions;
c) construction;
d) retention system;
e) protective padding.
3.7
helmet positioning index
HPI

vertical distance measured at the median plane, from the front edge of the helmet to the reference

plane, when the helmet is placed on the reference headform
3.8
impact sites

Note 1 to entry: Impact sites are defined in relation to the headform using projected measurements.

3.8.1
prescribed impact site
crown, front, front boss, side, rear, rear boss
Note 1 to entry: See Figure 1.
3.8.1.1
crown
point where the central vertical axis meets the top of the headform
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SIST EN ISO 10256-2:2018
ISO 10256-2:2016(E)
3.8.1.2
front

point on the median plane which is 50 mm above the anterior intersection with the reference plane

3.8.1.3
front boss

point 25 mm above the reference plane and 45° in a clockwise or counter-clockwise direction about the

central vertical axis
3.8.1.4
side
point 25 mm above the reference plane on the mid-frontal plane
3.8.1.5
rear
point at the posterior intersection of the median and reference plane
3.8.1.6
rear boss

point on the reference plane and 135° in a clockwise or counter-clockwise direction about the central

vertical axis
3.8.2
non-prescribed impact sites

locations on or above the test line and at least one-fifth of the circumference of the headform from any

prior impact site use
3.9
liner

material inside the outer covering of the helmet, with the principal objective to absorb kinetic energy

generated by an impact to the head

Note 1 to entry: This material, or part of it, helps to ensure a snug comfortable fit of the helmet on the head.

3.10
natural frequency

frequency at which a system will tend to oscillate when displaced from its static equilibrium position

3.11
outer covering
shell
material that gives the helmet its form
3.12
retention system

system which secures the helmet firmly to the head by passing under the mandible in whole or in part

when adjusted according to manufacturer’s instructions
3.13
support assembly

drop assembly in the monorail system minus the weight of the headform, ball arm, ball clamp, ball

clamp bolts, and accelerometer
3.14
spherical impactor

device made of low resonance material that couples mechanically with the ball arm connector of the

drop assembly in place of the impact test headform and is used for system verification of the drop

assembly
EXAMPLE Magnesium, aluminium alloy, or stainless steel.
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SIST EN ISO 10256-2:2018
ISO 10256-2:2016(E)
3.15
test area
area on and above the test line, where an impact site shall be located
3.16
test line
line that defines the boundaries of the test area
Note 1 to entry: See Figure 2.
4 Requirements
4.1 Innocuousness

The manufacturer shall provide written documentation indicating that the materials used in the

construction of the helmet fulfil the requirements for innocuousness given in ISO 10256-1.

4.2 Ergonomics

Manufacturers shall provide documentation indicating that the helmet fulfils the requirements for

ergonomics given in ISO 10256-1.
4.3 Attachments
4.3.1 Optional devices

Manufacturers shall provide documentation to confirm that any optional device fitted to the helmet has

been designed to minimize the risk of injury to the wearer or other players during contact or otherwise.

4.3.2 Fastener components

Fasteners for securing attachments to the helmet shall be so designed that the degree of protection

afforded to the wearer by the helmet is not thereby reduced.
4.3.3 Eye and full-face protectors

Helmets shall be designed to allow eye or full-face protectors to be attached with simple tools (e.g.

screwdriver).
4.4 Protected area
4.4.1 Minimum protected area

The protected area shall be at least the area above the line BCDEF in Figure 3 when the helmet is

positioned according to 5.4. This area shall correspond with the headform size with which the helmet

is to be tested.
4.4.2 Ear aperture

No ear aperture (opening) shall have a linear dimension exceeding 38 mm. The distance to any other

edge of the helmet shall be not less than 20 mm. The ear aperture shall be completely surrounded by

the outer covering of the helmet (shell).
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ISO 10256-2:2016(E)
4.4.3 Ventilation openings

Openings for the purpose of ventilation are permitted on the helmet provided that they fulfil the

penetration requirements in 4.5.
4.5 Penetration

Except for the ear apertures and when tested according to 5.6, there shall be no contact with the bare

headform by the test blade within the designated protected area.
NOTE See Figure 5.
4.6 Shock absorbing capacity

When tested according to 5.7, no single impact shall exceed a peak acceleration of 275 g under all test

conditions. The outer covering (shell) shall remain intact, with no cracks visible through the thickness

of the shell.
4.7 Retention system
4.7.1 Straps

The retention system, which is required on all helmets, consists of a straps which passes under

the mandible and is buckled on both sides of the helmet. The retention strap shall be not less than

13 mm wide.
NOTE See Figure 4.
4.7.2 Extensibility and strength

When tested according to 5.8, the displacement of the roller holder shall not exceed 25 mm during the load

range between 5 N and 110 N and the release force shall be not less than 110 N and not more than 300 N.

NOTE See Figure 4.
4.8 Field of vision

When tested under ambient conditions, the helmet shall not interfere with vision in the upward and

horizontal directions respective to each corneal eye point as defined by the following angles:

a) upward: 35°;
b) horizontally: 90°.
5 Test methods
5.1 Sampling

Only new and complete helmets as offered for sale shall be tested. The minimum number of samples

needed for a complete test is found in Table1.
5.2 Conditioning temperatures

Helmet samples shall be conditioned under ambient, low and elevated temperature conditions according

to ISO 10256-1.
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ISO 10256-2:2016(E)
5.3 Field of vision

The upward field of vision is the solid angle bounded by the reference plane of the headform and a

second plane tilted 35° upwards from the reference plane. This second plane intersects the reference

plane at two points on the front surface of the headform that are 31 mm to the right and left of the

median plane.

The left horizontal field of vision is the solid angle bounded by a plane parallel and 31 mm to the left of

the median plane of the headform and a second plane perpendicular to the median plane (i.e. rotated

90° horizontally) and parallel to the lateral plane. The two planes intersect with the reference plane at

the front surface of the headform at a point located 31 mm to the left of the median plane.

The right horizontal field of vision is the solid angle bounded by a plane parallel and 31 mm to the right

of the median plane of the headform and a second plane perpendicular to the median p

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