SIST EN 397:2025

SLOVENSKI STANDARD
01-julij-2025
Nadomešča:
SIST EN 397:2012+A1:2012
Industrijske zaščitne čelade
Industrial protective helmets
Industrieschutzhelme
Casques de protection pour l'industrie
Ta slovenski standard je istoveten z: EN 397:2025
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 397
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2025
EUROPÄISCHE NORM
ICS 13.340.20 Supersedes EN 397:2012+A1:2012
English Version
Industrial protective helmets
Casques de protection pour l'industrie Industrieschutzhelme
This European Standard was approved by CEN on 14 March 2025.

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, 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 397:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Requirements . 9
4.1 Physical requirements . 9
4.1.1 Requirements overview . 9
4.1.2 General. 10
4.1.3 Material and design . 10
4.1.4 Penetration of the shell via ventilation holes . 10
4.1.5 Sizing . 10
4.1.6 Ergonomics . 11
4.2 Performance requirements . 11
4.2.1 Shock absorption on-crown impacts for type 1 and 2 . 11
4.2.2 Shock absorption for high energy on-crown impact for type 2. 11
4.2.3 Shock absorption for off-crown impacts for type 2 . 11
4.2.4 Resistance to penetration . 11
4.2.5 Retention system . 11
4.2.6 Resistance to ignition . 12
4.2.7 Special application requirements . 12
4.2.8 Marking . 18
5 Test methods . 18
5.1 Samples . 18
5.2 Conditioning for testing . 24
5.2.1 General. 24
5.2.2 Ambient temperature. 24
5.2.3 Low temperature . 24
5.2.4 High temperature . 24
5.2.5 Water immersion . 24
5.2.6 Artificial ageing . 24
5.2.7 Higher temperature . 24
5.2.8 Artificial ageing for enhanced visibility . 26
5.3 Headforms . 26
5.3.1 Construction . 26
5.3.2 Selection of size . 26
5.4 Pin insertion of the shell via ventilation holes . 26
5.5 Sizing . 27
5.6 Ergonomics . 27
5.6.1 General. 27
5.6.2 Test subjects . 27
5.6.3 Procedure . 27
5.7 Shock absorption . 28
5.7.1 Shock absorption for crown impact for type 1 and type 2 . 28
5.7.2 Shock absorption for high energy on-crown impact for type 2 . 29
5.7.3 Shock absorption for off-crown for type 2 . 29
5.8 Resistance to penetration . 31
5.9 Retention system strength release . 31
5.10 Retention system effectiveness . 31
5.10.1 General . 31
5.10.2 Principle . 32
5.10.3 Apparatus . 32
5.11 Resistance to ignition of the shell . 34
5.11.1 Principle . 34
5.11.2 Apparatus . 34
5.11.3 Procedure . 34
5.11.4 Report . 34
5.12 Molten metal splash . 34
5.12.1 Principle . 34
5.12.2 Apparatus . 35
5.12.3 Procedure . 35
5.13 Electrostatic properties. 35
5.13.1 Atmosphere for conditioning and testing . 35
5.13.2 Surface resistance test for helmets comprising dissipative or conductive components
................................................................................................................................................................... 35
5.13.3 Leakage resistance test for helmets comprising dissipative or conductive components
................................................................................................................................................................... 35
5.13.4 Capacitance test for isolated conductive helmet components . 36
5.13.5 Transferred charge test for insulating and isolated dissipative helmet components
................................................................................................................................................................... 37
5.14 Enhanced visibility . 39
5.14.1 Background material. 39
5.14.2 Surface of retroreflective material . 39
5.14.3 Coefficient of retroreflection . 39
5.15 Determination of resistance to off-crown penetration . 39
5.15.1 Apparatus . 39
5.15.2 Procedure . 40
6 Marking . 40
6.1 General . 40
6.2 General markings . 40
7 Manufacturer’s instructions and information . 41
7.1 General . 41
7.2 For electrostatic properties . 42
7.3 For
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