oSIST prEN 397:2022
(Main)Industrial protective helmets
Industrial protective helmets
This European Standard specifies physical and performance requirements, methods of test and marking requirements for industrial safety helmets. The mandatory requirements apply to helmets for general use in industry. Additional optional performance requirements are included to apply only where specifically claimed by the helmet manufacturer. Industrial protective helmets are intended to reduce the risk of head injuries by falling objects and reduce consequential effects.
Industrieschutzhelme
Dieses Dokument legt Anforderungen an Konstruktion, Leistung, Prüfverfahren und Kennzeichnungen für Industrieschutzhelme fest. Die Anforderungen gelten für Helme zur allgemeinen Anwendung in der Industrie.
Zusätzliche Leistungsanforderungen für spezielle Anwendungen sind für den Fall enthalten, dass diese ausdrücklich vom Hersteller in Anspruch genommen werden.
Industrieschutzhelme sind dazu bestimmt, das Risiko von Kopfverletzungen durch herabfallende Gegenstände zu verringern und die Folgewirkungen zu reduzieren.
Casques de protection pour l'industrie
Le présent document spécifie les exigences en matière de conception, de performances, de méthodes d'essai et de marquage des casques de protection pour l'industrie. Les exigences s'appliquent aux casques d'utilisation générale dans l'industrie.
D'autres exigences de performance supplémentaires destinées à des applications spéciales ne sont applicables que lorsqu'elles sont spécifiquement revendiquées par le fabricant de casques.
Les casques de protection pour l'industrie sont destinés à réduire le risque de traumatisme crânien dû à des chutes d'objets et à réduire les effets qui en découlent.
Industrijske zaščitne čelade
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 397:2022
01-december-2022
Industrijske zaščitne čelade
Industrial protective helmets
Industrieschutzhelme
Casques de protection pour l'industrie
Ta slovenski standard je istoveten z: prEN 397
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
oSIST prEN 397:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 397:2022
DRAFT
EUROPEAN STANDARD
prEN 397
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2022
ICS 13.340.20 Will supersede EN 397:2012+A1:2012
English Version
Industrial protective helmets
Casques de protection pour l'industrie Industrieschutzhelme
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 158.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
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 supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 397:2022 E
worldwide for CEN national Members.
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Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Requirements . 8
4.1 Physical requirements . 8
4.2 Performance requirements . 10
5 Test methods . 15
5.1 Samples . 15
5.2 Conditioning for testing . 19
5.3 Head forms . 21
5.4 Penetration of the shell via ventilation holes . 21
5.5 Sizing . 22
5.6 Ergonomics . 22
5.7 Shock absorption . 23
5.8 Resistance to penetration . 26
5.9 Retention system strength release . 26
5.10 Retention system effectiveness . 26
5.11 Resistance to ignition . 28
5.12 Molten metal splash . 29
5.13 Electrostatic properties . 29
5.14 Enhanced visibility . 31
5.15 Determination of resistance to off-crown penetration . 31
6 Marking . 32
6.1 General. 32
6.2 General markings . 32
7 Manufacturer’s instructions and information . 33
7.1 General. 33
7.2 For electrostatic properties . 34
7.3 For enhanced visibility properties . 35
Annex A (informative) Recommendations on the materials and construction for industrial safety
helmets . 36
Annex B (informative) Test results, uncertainty of measurement . 37
Annex C (informative) Significant technical changes between this document and
EN 397:2012+A1:2012 . 39
Annex ZA (informative) Relationship between this European Standard and the essential
Requirements of Regulation (EU) 2016/425 of the European Parliament and of the Council
of 9 March 2016 on personal protective equipment aimed to be covered . 40
Bibliography . 42
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European foreword
This document (prEN 397:2022) has been prepared by Technical Committee CEN/TC 158 “Head
protection”, the secretariat of which is held by SIS.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 397:2012+A1:2012.
In comparison with the previous version EN 397:2012+A1:2012 of edition EN 397:2012, the following
technical modifications have been made (see Annex C):
— Introduction revised and modernized;
— introducing two types of helmets, with protection against falling objects on-crown (type 1) or on-
crown and off-crown (type 2);
— measuring of drop speed is defined for improved reproducibility;
— added electrostatic and enhanced visibility requirements;
— electrical properties are removed and reference to EN 50365 is made;
— editorial changes.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
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Introduction
An industrial protective helmet is intended to be used in different work settings such as construction,
mining, shipping, manufacturing etc. With this in mind the accidents that occur can therefore be different
depending on the workplace. Accident statistics show there are typical hazards such as falling objects,
slips, trips or falls of a person from the same level or one above, loss of control of machinery and electrical
hazards. The intention with this document is to reduce the potential injury risk associated with the
hazards but will not eliminate them completely.
Manufacturers complying with European Standards offer a suite of head protection devices for general
industrial use:
— the industrial bump cap meeting the requirements of EN 812;
— the industrial protective helmet meeting the requirements of Type 1 and Type 2 in this document;
— the high performance industrial helmet meeting the requirements of EN 14052.
EN 812, Industrial bump caps is intended to provide protection to the wearer against the effects of striking
their head against hard or stationary objects with sufficient severity to cause lacerations or other
superficial injuries. They are not intended to provide protection against the effects of being struck by an
object or moving or suspended loads. In addition to the mandatory requirements the bump cap can have
shock absorption properties at low temperatures, be ignition resistant and have electrical insulation
properties.
In this document Type 1 industrial protective helmets are intended to reduce the possible consequential
effects of head injuries caused by being struck by an object in the crown area. In this document Type 2
industrial protective helmets are intended to offer some additional protection from impacts off crown,
front, rear, sides of the helmet and includes a mandatory retention system. In addition to the
requirements for the Type 1 and Type 2 helmets, this document also includes requirements for special
applications, for example low temperature, high temperature, electrical insulation and enhanced
visibility.
EN 14052 high performance industrial helmet offers even greater protection from falling objects,
protection from off crown impacts and protection from penetration by a flat blade striker. It also includes
a retention system that meets requirements for system release and system effectiveness properties.
Angled and tangential (rotational) impacts are one of the causes of head injuries. At the time of developing
this document, no rotational test method was available. Therefore, only linear impacts to a helmeted head
in the shock absorption test have been addressed. CEN/TC 158 will in the near future present a new test
method, which can be used in future revisions of this document.
The wearing of a helmet meeting the requirements in this document reduces, but not eliminates, the
consequences of head injury. A proportion of the energy of an impact is absorbed by the helmet, thereby
reducing the force of the blow sustained by the head.
There are limits to the amount of protection that can be provided and wearing a helmet cannot always
prevent death or long term disability.
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1 Scope
This document specifies requirements for design, performance, test methods and markings for industrial
protective helmets. The requirements apply to helmets for general use in industry.
Additional performance requirements for special applications are included to apply only when
specifically claimed by the helmet manufacturer.
Industrial protective helmets are intended to reduce the risk of head injuries by falling objects and reduce
consequential effects.
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.
EN 960:2006, Headforms for use in the testing of protective helmets
1
EN 13087-1:2000, Protective helmets — Test methods — Part 1: Conditions and conditioning
EN 13087-2:2012, Protective helmets — Test methods — Part 2: Shock absorption
2
EN 13087-3:2000, Protective helmets — Test methods — Part 3: Resistance to penetration
EN 13087-5:2012, Protective helmets — Test methods — Part 5: Retention system strength
3
EN 50365, Live working — Electrically insulating helmets for use on low and medium voltage installations
EN 60079-32-2:2015, Explosive atmospheres — Part 32-2: Electrostatics hazards — Tests
(IEC 60079-32-2:2015)
4
EN ISO 472:2013, Plastics — Vocabulary (ISO 472:1999)
EN ISO 9185:2007, Protective clothing — Assessment of resistance of materials to molten metal splash
(ISO 9185:2007)
EN ISO 11664-2:2011, Colorimetry — Part 2: CIE standard illuminants (ISO 11664-2:2007)
IEC/TS 60079-32-1:2013+AMD 1:2017, Explosive atmospheres — Part 32-1: Electrostatic hazards —
guidance
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
1
As impacted by EN 13087-1:2000/A1:2001.
2
As impacted by EN 13087-3:2000/A1:2001.
3
Under preparation. Stage at time of publication: FprEN 50365:2022.
4
As impacted by EN ISO 472:2013/A1:2018.
5
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3.1
industrial protective helmet
head protector, hereinafter referred to as 'helmet', primarily intended to provide the wearer with
protection against falling objects on-crown (type 1) or on-crown and off-crown (type 2)
Note 1 to entry: The helmet can incorporate additional protective functions.
3.2
shell
rigid cover which gives the helmet its shape
3.3
retention system
complete assembly by means of which the helmet is maintained in position on the head, including any
devices for adjusting the system or enhancing the wearer's comfort
Note 1 to entry: The retention system can include a chin strap.
[SOURCE: EN 14052:2012+A1:2012, 3.2]
3.4
crown
area on the upper outside surface of the helmet which lies within a 30° included solid angle from point G
(as defined in EN 960:2006, 2.12) on the central vertical axis through the head form to which the helmet
is fitted
[SOURCE: EN 14052:2012+A1:2012, 3.4]
3.5
integral additional protective function
part(s) of the helmet, intended by the helmet manufacturer not to be removed by the user, except for
maintenance purposes, and which provide protection to the wearer, other than as provided for by this
European Standard
[SOURCE: EN 14052:2012+A1:2012, 3.5]
3.6
non-integral additional protective function
additional protective device(s) attached to the helmet intended to be removable by the user, but are not
specifically required in order for the helmet to satisfy this document
EXAMPLE Non-integral additional function can be a visor, face shield or hearing protectors.
3.7
helmet accessory
additional device(s) attached to the helmet intended to be removable by the user, but which provide no
protective function to the wearer
EXAMPLE Helmet accessory can be a head lamp or a video camera.
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3.8
HPI
Helmet Positioning Index
vertical distance measured on the longitudinal vertical plane, between the brow of the helmet front part
and the reference plane (B), when the helmet is placed on the appropriate reference head form
Note 1 to entry: The longitudinal vertical plane and the reference plane are defined in EN 960:2006.
Note 2 to entry: See Figure 1.
Key
B reference plane
HPI helmet positioning index
Figure 1 — Helmet positioning index
[SOURCE: EN 960:2006]
3.9
test plaque
sample of the shell or representative shell material
[SOURCE: ANSI Z89.1-2014]
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4 Requirements
4.1 Physical requirements
4.1.1 Requirements overview
Table 1 — Overview for the requirements of Type 1 and Type 2 industrial protective helmets
Type 1 Type 2
Physical 4.1.2 General X X
requirements
4.1.3 Materials and X X
design
4.1.4 Penetration of the X X
shell via ventilation
holes
4.1.5 Sizing X X
4.1.6 Ergonomics X X
Performance 4.2.1 Shock absorption X X
requirements on crown impacts for
type 1 and 2
4.2.2 Shock absorption - X
for high energy on
crown impact for type 2
4.2.3 Shock absorption - X
for off-crown impacts
for type 2
4.2.4 Resistance to X X
penetration
4.2.5 Retention system X X
(4.2.5.1) (4.2.5.2)
4.2.6 Resistance to X X
ignition
4.2.7 Special application O O
requirements
X Applicable for the specified type
O Applicable for special application
- Not applicable for the helmet type
4.1.2 General
Unless otherwise specified, the values stated in this document are expressed as nominal values. Except
for temperature limits, values that are not stated as maxima or minima shall be subject to a tolerance
of ± 5 %. Unless otherwise specified, the temperature values shall be in accordance with
1
EN 13087-1:2000 .
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Helmets shall be tested with all integral additional protective functions (3.5) fitted. When non-integral
additional protective functions (3.6) or helmet accessories (3.7) are submitted with the helmet for test,
the helmet shall satisfy the requirements of this document with and without these items fitted.
If helmet accessories and/or non-integral additional protective functions are attached to a helmet, the
manufacturer shall provide a list of possible accessories that do not affect the conformity of the helmet
with this document. See Table 1 for the identification of required tests, when helmet accessories are
attached to the helmet.
NOTE Accessories can be fixed on the helmet using fixing devices provided by the helmet manufacturer.
4.1.3 Material and design
4.1.3.1 Innocuousness
For those parts of the helmet that come into contact with the skin, materials shall not be used which are
known to be likely to cause skin irritation or any adverse effect on health.
Substances recommended for cleaning, maintenance or disinfection shall have no adverse effect on the
helmet and shall be known not to be likely to have any adverse effect upon the wearer, when applied in
accordance with the helmet manufacturer’s instructions.
Information claiming that the product is innocuous shall be checked.
See also Annex A.
4.1.3.2 Visual and tactile inspection
When tested according to 5.6.3.1, there shall be no sharp edges or projection on any parts of the helmet
which are in contact, or potential contact, with the wearer, when the helmet is worn, such as is likely to
cause injury to the wearer.
Any part of the helmet that can be adjusted, or removed by the wearer for the purpose of replacement (in
accordance with the helmet manufacturer's instructions, see 5.6.3.2), shall be so designed and
manufactured as to facilitate adjustment, removal and attachment without the use of tools.
4.1.4 Penetration of the shell via ventilation holes
If the helmet has ventilation holes, either adjustable or fixed, each ventilation hole shall be tested by pins
in accordance with 5.4. The test is considered as passed if both pins do not get in contact with the testing
head form during the tests.
NOTE 1 Requirements regarding ventilation design are not given because they depend on the use of the helmet
and the resulting risks as determined by a risk analysis.
NOTE 2 Holes intended for accessories (e.g. visor, ear muff) are not considered as ventilation holes.
4.1.5 Sizing
The helmet shall be adjusted to fit to the head form as described in 5.5, when tested.
The size of the helmet shall be adjustable continuously or in steps of maximum 5 mm.
4.1.6 Ergonomics
Any adjustment system incorporated within the helmet shall be so designed and manufactured so that it
remains adjusted, when tested in accordance with 5.6.
When the helmet is assessed in accordance with 5.6.3 the following requirements shall be met:
a) it shall be possible for the helmet to be adjusted to give a snug secure fit to the head of the test subject;
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b) the helmet shall always remain in place during the activities listed under 5.6.3.3;
c) there shall not be any “NO” answers from the test subject(s).
4.2 Performance requirements
4.2.1 Shock absorption on crown impacts for type 1 and 2
When a helmet is tested in accordance with 5.7.1, the force transmitted to the head form shall not exceed
5,0 kN. This requirement shall be satisfied by helmets treated in accordance with the appropriate
conditioning processes given in 5.2 as specified by the list of mandatory tests given in Table 1.
4.2.2 Shock absorption for high energy on crown impact for type 2
When a helmet is tested in accordance with 5.7.2, the force transmitted to the head form shall not exceed
10,0 kN. This requirement shall be satisfied by helmets treated in accordance with the appropriate
conditioning processes given in 5.2 as specified by the list of mandatory tests given in Table 1.
4.2.3 Shock absorption for off-crown impacts for type 2
When a type 2 helmet is tested in accordance with 5.7.2, the force transmitted to the head form shall not
exceed 10,0 kN.
4.2.4 Resistance to penetration
When a helmet is tested in accordance with 5.8, the striker shall not contact the head form. This
requirement shall be satisfied by helmets treated in accordance with the appropriate conditioning
processes given in 5.2, as specified by the list of mandatory tests given in Table 1.
4.2.5 Retention system
4.2.5.1 Chin strap strength release – Type 1
If a chin strap is supplied with the helmet, it shall be no less than 10 mm wide when un-tensioned. When
a helmet is tested by the method described in 5.9, the chinstrap shall not release at less than 150 N.
4.2.5.2 Chin strap strength release – Type 2
The chinstrap shall be no less than 10 mm wide when un-tensioned. When a helmet is tested by the
method described in 5.9, the chinstrap shall not release at less than 500 N.
When a helmet is tested by the method described in 5.10, for the front way and rear way tests, the helmet
shall not come off the head form.
4.2.6 Resistance to ignition
When tested in accordance with 5.11, no part of the helmet shell shall ignite upon application of the
heated rod nor continue to glow after removal of the heated rod.
4.2.7 Special application requirements
4.2.7.1 Performance at lower temperatures
When tested for shock absorption in accordance with 5.7, the requirement given in 4.2 shall be satisfied
by one additional helmet which has been conditioned in accordance with 5.2.3.
When tested for penetration in accordance with 5.15, the requirement given in 4.2 shall be satisfied by
one additional helmet, which has been conditioned in accordance with 5.2.3.
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Helmets claimed to meet this requirement shall state this fact on the marking of the helmet, in accordance
with 6.2.
4.2.7.2 Performance at higher temperatures
When tested for shock absorption by the method given in 5.7, the requirement of 4.2 shall be satisfied by
one helmet, which has been conditioned in accordance with 5.2.4.
When tested for resistance to penetration by the method given in 5.8, the requirement of 4.2 shall be
satisfied by a second helmet, which has been conditioned in accordance with 5.2.4.
Helmets claimed to meet this requirement shall state this fact on the marking of the helmet, in accordance
with 6.2.
4.2.7.3 Electrically insulating helmets for use on low and medium voltage installations
If the helmet also is designed to give Electrically insulating protection it shall meet the requirements of
FprEN 50365:2022.
4.2.7.4 Molten metal splash
When tested in accordance with 5.12, the shell shall not:
a) be penetrated by the molten metal through the shell;
b) burn with the emission of flame after a period of 5 s has elapsed after the pouring of molten metal has
ceased. Only the direct contact area shall be assessed.
NOTE A helmet fitted with a grooved rim can comply with this requirement.
4.2.7.5 Electrostatic properties
4.2.7.5.1 General
To avoid the buildup of harmful electrostatic charges, helmets shall be protected by one of the following
means:
— use of dissipative materials which are safely earthed e.g. via contact to the wearer;
— use of insulating materials and surfaces that do not tend to be highly charged by rubbing with clothes
potentially in contact with these in normal operation. If insulating materials are used in the helmet,
charging shall then be completed using cloths made of materials from the positive and negative end
of a triboelectric series. If results on corona charging and whipping with a leather glove have been
discarded, it shall be stated in the information for use that the test sample may not be used in the
presence of charge generating processes stronger than manual rubbing;
— in case insulating materials are used in positions inside the equipment that are not accessible, these
do not need to be tested as charging by rubbing is impossible.
If there are isolated metallic parts that are accessible in the helmet these are considered as isolated
capacitances and shall meet the requirements of IEC TS 60079-32-1:2013+AMD1:2017.
4.2.7.5.2 Conditioning
Conditioning shall be in accordance with EN 60079-32-2:2015, 24 h at (23 ± 2) °C and 30 % ± 5 % r.h.
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4.2.7.5.3 Requirements
4.2.7.5.3.1 Leakage resistance
In case a helmet component is determined to be dissipative according to 4.2.7.5.2transferred charge does
not need to be measured but instead the earth leakage resistance shall be measured according to 5.13.2
with conditioning according to 5.13.1. The leakage resistance shall be in the range of 1 MΩ to 100 MΩ (1 x
106 Ω – 1 x 108 Ω) fulfilling the requirements for dissipative materials in
IEC TS 60079-32-1:2013+AMD1:2017, Table 22.
For any conductive helmet component according to 4.2.7.5.2 the earth leakage resistance shall be
measured according to 5.13.2 with conditioning according to 5.13.1. The leakage resistance shall be in
the range of 1 MΩ to 100 MΩ (1 x 106 Ω – 1 x 108 Ω) fulfilling the requirements in
IEC TS 60079-32-1:2013+AMD1:2017, Table 22.
In case the earth leakage resistance is higher this component shall be rated as unearthed metal part. This
shall be assessed by a capacity measurement according to EN 60079-32-2:2015, 4.10 and the results shall
meet the requirements in IEC TS 60079-32-1:2013+AMD1:2017, Table 23.
4.2.7.5.3.2 Surface resistance for helmets comprising of dissipative material
The surface resistance of the helmet components shall be in the range of 10 kΩ to 100 GΩ
(1 x 104 Ω – 1 x 1011 Ω) by testing according to 5.13.3 with conditioning according to 5.13.1.
4.2.7.5.3.3 Surface Resistance for helmets comprising con
...
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