EN 14458:2018
(Main)Personal eye-equipment - High performance visors intended only for use with protective helmets
Personal eye-equipment - High performance visors intended only for use with protective helmets
This European Standard specifies the minimum requirements for visors designed specifically to be used only with protective helmets, including but not limited to those conforming to EN 443, EN 14052, EN 16471 and EN 16473 as the situation dictates. These visors may be permanently fitted to, or removable from, the helmet. See the scope of the various helmet standards for applications.
These visors are not intended to protect against smoke and gas /vapour hazards.
Three types of visors in two forms are described in this document.
The two forms are:
- face guards provide both eye and face protection, and
- eye guards that are shorter and effectively provide only eye protection.
The three types are:
- Visors for general use: Eye guards and face guards providing resistance and/or protection against mechanical, liquid chemical and basic physical hazards.
- Visors with increased thermal performance: Face guards that additionally provide resistance and/or protection against higher than basic levels of heat and flame. This additional requirement is not applicable for eye guards.
- Mesh visors: Eye guards and face guards that incorporate mesh oculars with defined levels of performance from EN 1731, and other additional mechanical requirements described in this standard.
Visors for sporting use, those with corrective effect, and goggles used with a protective helmet are not covered by this standard.
Persönlicher Augenschutz - Hochleistungsvisiere zur ausschließlichen Verwendung an Schutzhelmen
Diese Europäische Norm legt die Mindestanforderungen für Visiere, die speziell nur zur Verwendung mit Schutzhelmen ausgelegt sind, z. B. Feuerwehrhelme, die mit EN 443, EN 16471 und EN 16473, und Hochleistungs-Industrieschutzhelme, die mit EN 14052 übereinstimmen, fest. Diese Visiere können permanent montiert oder vom Helm entfernbar sein.
In diesem Dokument werden drei Typen von Visieren in zwei verschiedenen Formen beschrieben.
Die zwei Formen sind:
- Gesichtsschützer, die sowohl die Augen, als auch das Gesicht schützen und
- Augenschützer, die kürzer sind und nur die wirksam Augen schützen.
Die drei Typen sind:
- Visiere zur allgemeinen Verwendung: Augen und Gesichtsschützer, die als Abwehr und/oder Schutz gegenüber mechanischen, flüssig chemischen und einfachen physikalischen Gefährdungen dienen.
- Visiere mit erhöhter thermischer Leistungsfähigkeit: Gesichtsschützer, die zusätzlich als Abwehr und/ oder Schutz gegen höhere Wärme und Flammeneinwirkungen als die Basisanforderungen dienen.
- Visiere aus Draht oder Kunststoffgewebe: Augen und Gesichtsschützer, die Gewebe Sichtscheiben mit definierten Leistungsniveaus nach EN 1731 und anderen zusätzlichen mechanischen Anforderungen, die in dieser Europäischen Norm beschrieben sind, beinhalten.
Diese Visiere sind nicht zum Schutz gegen Rauch und Gas/Dampf Gefährdungen ausgelegt.
Visiere für den sportlichen Einsatz, Visiere mit Korrektionswirkung und Korbbrillen, die zusammen mit Schutzhelmen eingesetzt werden, werden von dieser Europäischen Norm nicht abgedeckt.
Équipement de protection des yeux - Visières haute performance uniquement destinées à une utilisation avec des casques de protection
La présente Norme européenne spécifie les exigences minimales s’appliquant aux visières spécifiquement conçues pour une utilisation exclusive avec des casques de protection, tels que des casques de sapeurs-pompiers, conformes à l’EN 443, l’EN 16471 et l’EN 16473 et des casques de protection à haute performance pour l’industrie conformes à l’EN 14052. Il peut s’agir de visières fixées de manière permanente au casque, ou de visières amovibles.
Le présent document décrit trois types et deux formes de visière.
Les deux formes sont les suivantes :
- les écrans faciaux qui protègent à la fois les yeux et le visage ; et
- les écrans oculaires qui sont plus courts et qui ne protègent efficacement que la région oculaire.
Les trois types de visière sont les suivants :
- visières à usage général : écrans oculaires et écrans faciaux assurant une résistance et/ou une protection contre les risques mécaniques, les risques physiques de base ainsi que les risques liés aux substances chimiques liquides ;
- visières à résistance thermique accrue : écrans faciaux assurant une résistance et/ou une protection contre des risques plus élevés liés à la chaleur et aux flammes ;
- visières grillagées : écrans oculaires et écrans faciaux dotés d’oculaires grillagés présentant des niveaux de performance spécifiques conformément à l’EN 1731, et des exigences mécaniques supplémentaires définies dans la présente Norme européenne.
Les visières couvertes par le présent document ne sont pas destinées à assurer une protection contre la fumée et les dangers liés aux gaz/vapeurs.
Les visières destinées à la pratique sportive, les visières avec effet correcteur ainsi que les lunettes-masque utilisées avec un casque de protection ne sont pas couvertes par la présente Norme européenne.
Osebna oprema za varovanje oči - Vizirji z visoko stopnjo zaščite, namenjeni le uporabi z zaščitnimi čeladami
Ta evropski standard določa minimalne zahteve za vizirje, namenjene le uporabi z varovalnimi čeladami, vključno s tistimi, ki so v skladu s standardi EN 443, EN 14052, EN 16471 in EN 16473, vendar ne omejeno nanje, glede na situacijo. Ti vizirji so lahko trajno pritrjeni na čelado ali odstranljivi. Za uporabo glejte različne standarde za čelade.
Ti vizirji niso namenjeni zagotavljanju zaščite pred dimom in plini/hlapi. V tem dokumentu so opisani trije tipi vizirjev v dveh oblikah. Omenjeni dve obliki:
– ščitnik za obraz, ki zagotavlja zaščito za oči in obraz, in
– ščitnik za oči, ki je krajši in zagotavlja samo zaščito za oči.
Omenjeni trije tipi:
– vizirji za splošno uporabo: ščitniki za oči in obraz zagotavljajo odpornost in/ali zaščito pred mehanskimi in fizičnimi nevarnostmi ter tekočimi kemikalijami.
– vizirji z boljšo toplotno zmogljivostjo: ščitniki za obraz, ki dodatno zagotavljajo boljšo odpornost in/ali zaščito kot zgolj zaščito proti osnovnim ravnem toplote in plamenov. Ta dodatna zahteva se ne uporablja za ščitnike za oči.
– mrežni vizirji: ščitniki za oči in obraz z mrežnimi okularji z določenimi ravnmi zmogljivosti v skladu s standardom EN 1731 in drugimi mehanskimi zahtevami, opisanimi v tem standardu.
Vizirji za športno uporabo, vizirji s korektivnim učinkom in očala, ki se uporabljajo z varovalnimi čeladami, niso zajeti v tem standardu.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2018
1DGRPHãþD
SIST EN 14458:2004
2VHEQDRSUHPD]DYDURYDQMHRþL9L]LUML]YLVRNRVWRSQMR]DãþLWHQDPHQMHQLOH
XSRUDEL]]DãþLWQLPLþHODGDPL
Personal eye-equipment - High performance visors intended only for use with protective
helmets
Persönlicher Augenschutz - Hochleistungsvisiere zur ausschließlichen Verwendung an
Schutzhelmen
Équipement de protection des yeux - Visières haute performance uniquement destinées
à une utilisation avec des casques de protection
Ta slovenski standard je istoveten z: EN 14458:2018
ICS:
13.220.10 Gašenje požara Fire-fighting
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 14458
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2018
EUROPÄISCHE NORM
ICS 13.340.20 Supersedes EN 14458:2004
English Version
Personal eye-equipment - High performance visors
intended only for use with protective helmets
Équipement de protection des yeux - Visières haute Persönlicher Augenschutz - Hochleistungsvisiere zur
performance uniquement destinées à une utilisation ausschließlichen Verwendung an Schutzhelmen
avec des casques de protection
This European Standard was approved by CEN on 27 November 2017.
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 14458:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Classification . 7
4.1 General . 7
4.2 Visor for general use . 7
4.3 Face guards with increased thermal performance . 7
4.4 Mesh visor . 7
5 Performance requirements . 9
5.1 General . 9
5.2 Visors for general use . 9
5.2.1 Construction . 9
5.2.2 Materials . 9
5.2.3 Resistance to UV radiation . 9
5.2.4 Cleaning and disinfection . 10
5.2.5 Resistance to thermal shock . 10
5.2.6 Resistance to corrosion . 10
5.2.7 Vision . 10
5.2.8 Area to be protected . 11
5.2.9 Electrical properties . 11
5.2.10 Protection against high speed particles . 11
5.2.11 Flammability . 12
5.2.12 Resistance to contact with liquid chemicals . 12
5.2.13 Visors attached to helmets with radiant heat performance . 13
5.2.14 Ergonomics and practical performance . 13
5.3 Face guards with increased thermal performance . 15
5.3.1 General . 15
5.3.2 Radiant heat . 15
5.3.3 Flammability . 15
5.3.4 Resistance to molten metals and hot solids . 16
5.4 Mesh visors . 16
5.5 Optional requirements . 16
5.5.1 General . 16
5.5.2 Optical filtering performance . 16
5.5.3 Protection against high speed particles with high energy impact . 17
5.5.4 Resistance to fogging . 17
5.5.5 Abrasion resistance . 17
6 Test methods . 17
6.1 Nominal values and tolerances . 17
6.2 Conditioning and test sample numbers . 18
6.2.1 General . 18
6.2.2 Ultraviolet (UV) ageing. 18
6.2.3 Thermal shock conditioning . 18
6.2.4 Thermal plus conditioning . 18
6.2.5 Thermal minus conditioning . 18
6.3 Visual inspection . 19
6.4 Electrical properties tests . 19
6.4.1 Conductive headform test. 19
6.4.2 Surface insulation test . 19
6.5 Radiant heat protection . 19
6.6 Flammability test for visors for general use . 20
6.7 Flammability test for face guards with increased thermal performance . 20
6.8 Test for resistance to liquid chemicals . 21
6.9 Practical performance test . 21
6.9.1 Test conditions . 21
6.9.2 Test subjects . 21
6.9.3 Equipment to be tested . 21
6.9.4 Preparation for the test . 21
6.9.5 Test procedure . 22
7 Marking . 23
7.1 General . 23
7.2 Markings on visor . 24
7.3 Markings on means of fixing . 24
8 Information . 25
Annex A (normative) Tables of conditioning/ testing schedule . 27
Annex B (normative) Taber abrasion resistance test method . 31
B.1 Apparatus . 31
B.2 Preparation of test pieces . 33
B.3 Test method . 33
B.4 Calculation and interpretation of results . 34
Annex C (informative) Test report and uncertainty of measurement . 35
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Regulation (EU) 2016/425 aimed to be covered . 37
Bibliography . 39
European foreword
This document (EN 14458:2018) has been prepared by Technical Committee CEN/TC 85 “Eye
protective equipment”, the secretariat of which is held by AFNOR.
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 February 2019, and conflicting national standards
shall be withdrawn at the latest by February 2019.
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.
This document supersedes EN 14458:2004.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Regulation.
For relationship with EU Regulation, see informative Annex ZA, which is an integral part of this
document.
The main changes regarding EN 14458:2004 are:
— change of title;
— correction of discrepancies between this European Standard and the designated helmet standards,
e.g. EN 443, EN 14052; EN 16473;
— modifications regarding terms and definitions;
— clarification and extension of the scope; not only useable for firefighter helmets;
— clarifications regarding the three different types of visors covered by this standard and the
corresponding tests and requirements;
— clarification regarding the two forms of visors considered in this standard, e.g. only face guards for
increased thermal performance;
— introduction of two radiant heat exposure levels and the corresponding tests for increased thermal
performance visors;
— revision and extension of the practical performance test;
— new normative Annex A which summarizes the conditioning, number of test samples and the
sequence of tests to be done.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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.
1 Scope
This European Standard specifies the minimum requirements for visors designed specifically to be used
only with protective helmets e.g. firefighter helmets conforming to EN 443, EN 16471 and EN 16473
and high performance industrial helmets conforming to EN 14052. These visors may be permanently
fitted to, or be removable from the helmet.
Three types of visors in two forms are described in this document.
The two forms are:
— face guards provide both eye and face protection, and
— eye guards that are shorter and effectively provide only eye protection.
The three types are:
— visors for general use: eye guards and face guards providing resistance and/or protection against
mechanical, liquid chemical and basic physical hazards;
— visors with increased thermal performance: face guards that additionally provide resistance and/or
protection against higher than basic levels of heat and flame;
— mesh visors: eye guards and face guards that incorporate mesh lenses with defined levels of
performance from EN 1731, and other additional mechanical requirements described in this
European Standard.
These visors are not intended to protect against smoke and gas /vapour hazards.
Visors for sporting use, those with corrective effect, and goggles used with a protective helmet are not
covered by this European Standard.
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.
EN 136:1998, Respiratory protective devices — Full face masks — Requirements, testing, marking
EN 166:2001, Personal eye-protection — Specifications
EN 167:2001, Personal eye-protection — Optical test methods
EN 168:2001, Personal eye-protection — Non-optical test methods
EN 170:2002, Personal eye-protection — Ultraviolet filters — Transmittance requirements and
recommended use
EN 171:2002, Personal eye-protection — Infrared filters — Transmittance requirements and
recommended use
EN 172:1994, Personal eye protection — Sunglare filters for industrial use
EN 407:2004, Protective gloves against thermal risks (heat and/or fire)
EN 443:2008, Helmets for fire fighting in buildings and other structures
EN 659:2003+A1:2008, Protective gloves for firefighters
EN 1731:2006, Personal eye protection — Mesh eye and face protectors
EN 12477:2001, Protective gloves for welders
EN 13087-1:2000, Protective helmets — Test methods — Part 1: Conditions and conditioning
EN 13087-7:2000, Protective helmets — Test methods — Part 7: Flame resistance
EN 13087-8:2000, Protective helmets — Test methods — Part 8: Electrical properties
EN 13087-10:2012, Protective helmets — Test methods — Part 10: Resistance to radiant heat
EN 16128:2015, Ophthalmic optics — Reference method for the testing of spectacle frames and sunglasses
for nickel release
EN ISO 4007:2012, Personal protective equipment — Eye and face protection — Vocabulary
(ISO 4007:2012)
EN ISO 9185:2007, Protective clothing — Assessment of resistance of materials to molten metal splash
(ISO 9185:2007)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 4007 and the following
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
visor
device providing protection to all or part of the face including at least the eyes
3.2
eye guard
visor which provides protection to essentially only the eyes, when in the in-use position
Note 1 to entry: See 5.2.8.2.
3.3
face guard
visor which provides protection to the eyes and a substantial area of the face, when in the in-use
position
Note 1 to entry: See 5.2.8.1.
3.4
means of fixing
means by which the visor is supported and interfaced with the designated helmet(s)
Note 1 to entry: This means may be an integral part of the helmet, may be fixed permanently or temporarily to
it, or may be worn separately but at the same time as the helmet.
3.5
helmet
headwear intended to primarily protect the upper part of the wearer’s head against hazards
4 Classification
4.1 General
Visors in accordance with this document shall be classified as one of the following three types (see 4.2
to 4.4). Specific warning shall be included in the information provided by the manufacturer on the
limitations of use of each type (see Clause 8 f)), and the need to ensure that suitable helmet-visor
combinations are used (see Clause 8 m). Table 1 outlines the clauses of this document applicable to the
three types of visors.
4.2 Visor for general use
Eye guards and face guards providing resistance and/or protection against mechanical, liquid chemical
and basic physical hazards. Intended for use where there is no foreseeable exposure to significant levels
of heat, flame or molten metals.
NOTE For example but not limited to technical rescue, industrial applications, emergency medical activities.
4.3 Face guards with increased thermal performance
Face guards that additionally provide resistance and/or protection against higher than basic levels of
heat and flame. Intended for use where exposure to significant levels of heat and/or flame and molten
metal is foreseeable.
NOTE 1 Eye guards are not suitable for applications where increased thermal performance is needed.
NOTE 2 For example but not limited to firefighting, foundry or furnace work with exposure to the heat source,
hot cutting.
4.4 Mesh visor
Eye guards and face guards that incorporate mesh lenses with defined levels of performance from
EN 1731. Intended for use to protect against mechanical hazards and where is no foreseeable need for
protection against heat and/or flame, sparks, chemicals or liquid / molten materials, or electrical
contact.
NOTE For example but not limited to chainsaw use during tree clearance and related activities. There will be
only a few other situations where mesh visors can be considered suitable.
Table 1 — Allocation of requirements for the three types of visors covered by this standard
Requirement Eye guards and face Face guards with Mesh
guards for general increased thermal
use performance
5.1 General M M M
5.2.1 Construction M M M
5.2.2 Materials M M M
5.2.3 Resistance to UV radiation M M -
5.2.4 Cleaning and disinfection M M M
5.2.5 Resistance to thermal shock m/o m/o m/o
5.2.6 Resistance to corrosion M M M
5.2.7.1 Optical properties M M -
5.2.7.2 Field of view M M M
5.2.8 Area to be protected M M M
5.2.9 Electrical properties m/o m/o -
5.2.10 Protection against high M M -
speed particles
5.2.11.1 Flammability M M M
5.2.11.2 Verification of the m/o m/o m/o
helmet flammability
performance
5.2.12 Resistance to contact by m/o m/o -
liquid chemicals
5.2.13 Visors attached to helmets m/o m/o -
with radiant heat performance
5.2.14 Ergonomics and practical M M M
performance
5.3.2.1 Radiant heat protection - M -
5.3.2.2 Radiant heat resistance - M -
5.3.3 Flammability - M -
5.3.4 Resistance to molten metals - M -
and hot solids
5.4 Mesh visors - - M
5.5.1 General O O O
5.5.2 Optical filtering O O -
performance
5.5.3 Resistance to high energy O O O
impact
Requirement Eye guards and face Face guards with Mesh
guards for general increased thermal
use performance
5.5.4 Resistance to fogging O O -
5.5.5 Abrasion resistance O O -
Clause 7 Marking M M M
Clause 8 Information M M M
M = mandatory requirement for this type of visor
O = optional requirement for this type of visor
m/o = mandatory for the visor if any designated helmet meets this requirement, otherwise optional for the visor
- = not applicable for this type of visor
5 Performance requirements
5.1 General
Visors conforming to this document shall not add any risks to the user under foreseeable conditions of
use. Therefore visors conforming to this European Standard shall meet:
— the general requirements given in 5.2;
— for face guards with increased thermal performance in addition the requirements of 5.3;
— for mesh visors the requirements of 5.4; and
optional requirements are given in 5.5.
Visors, when fitted to helmets designated by the visor manufacturer, in both the in-use (protective)
position, and the out-of-use (standby) position, shall not detrimentally affect the performance of the
helmets with which they are used. This requirement shall be assessed within the relevant helmet
standard, applied to the combination.
5.2 Visors for general use
5.2.1 Construction
The visor shall be free from projections, sharp edges or other defects, which are likely to cause
discomfort or injury during use. Test in accordance with 6.3.
5.2.2 Materials
No parts of the visor assembly, which may be in contact with the wearer shall be made of materials
which, under foreseeable conditions of use, are known to be likely to cause skin irritation or any
adverse effect on health. Test in accordance with 6.3.
In the case of metallic materials in direct and prolonged contact with the skin, the release of nickel shall
be less than 0,5 μg/cm /week when tested according to EN 16128:2015.
5.2.3 Resistance to UV radiation
Visors shall meet the requirements of EN 166:2001, 7.1.5.2 when preconditionned according to
EN 168:2001, Clause 6 and assessed according to EN 167:2001, Clauses 4 and 6. Three test samples
shall be tested, two in one of the eye positions and one in the other.
5.2.4 Cleaning and disinfection
Substances and procedures recommended by the manufacturer for cleaning, maintenance or
disinfection shall have no adverse effect on the exposed components of the helmet or visor, nor leave
residues, which may enhance flammability. Neither shall they be known to be likely to have any adverse
effect on the wearer when applied in accordance with the manufacturer’s instructions. After cleaning
and disinfection in accordance with the manufacturer’s instructions, the visor shall show no visible
degradation and shall continue to meet the requirements of either 5.2.11 for general use visors or 5.3.3
for increased thermal performance visors.
Where anti-fogging compounds are specified by the manufacturer they shall be compatible with the
eyes, the skin, and the visor assembly under the foreseeable conditions of use. Test in accordance with
6.3.
5.2.5 Resistance to thermal shock
The visor and means of fixing shall show no apparent deformation when subjected to thermal shock
conditioning according to 6.2.3. At the end of each of the periods 6.2.3 a) to e) the raising/ lowering
mechanism for the visor shall operate correctly in accordance with the manufacturer’s instructions.
Optionally, period 6.2.3 a) of the sequence may be conducted at –20 °C, −30 °C or −40 °C (all ± 2 °C).
Where one of these lower temperatures is used, conditioning at −10 °C is not required. The test report
and marking shall identify the temperature used.
Visors shall match or exceed the extremes of temperature against which designated helmets have been
tested for thermal shock.
5.2.6 Resistance to corrosion
After having undergone the test for resistance to corrosion specified in EN 168:2001, Clause 8, all metal
parts of the visor and means of fixing shall display smooth surfaces and shall be free from corrosion.
5.2.7 Vision
5.2.7.1 Optical properties
The optical properties of the lens shall meet the minimum requirements specified in Table 2.
Table 2 — General optical properties
Property Minimum requirement Test in accordance with
Refractive power EN 166:2001, 7.1.2.1, Optical Class 2 EN 167:2001, Clause 3
Transmittance EN 166:2001, 7.1.2.2 Depends on visor characteristics.
See EN 166:2001, 7.1.2.2 for
relevant documents
Diffusion of light ≤ 0,75 cd/m lx EN 167:2001, Clause 4
Quality of material EN 166:2001, 7.1.3 EN 167:2001, Clause 5
surface
5.2.7.2 Field of view
The visor, when attached to the designated helmet, and tested according to EN 443:2008, 5.16, shall
meet the following angular requirements:
a) horizontal field of view of not less than 105°;
b) vertical field of view in the upwards direction of not less than 7°;
c) vertical field of view in the downwards direction of not less than 45°.
The specified field of view shall be achieved with the visor in both the in-use and out-of-use positions.
The periphery of the face guard may fall within the specified field of view.
There shall be no undue distortion of vision as subjectively determined during testing in accordance
with 6.9.
5.2.8 Area to be protected
5.2.8.1 Face guard
In the in-use position, the face guard in conjunction with designated helmet(s) shall cover at least the
facial region rectangle EFGH of the appropriate headform, defined in EN 168:2001, Figure 11, when
assessed in accordance with EN 168:2001, 10.2, but using a maximum angle of 15° instead of 45° for
rotation about the horizontal axis.
In addition, the face guard in conjunction with designated helmet(s) shall cover the rectangular region
CDEF of the appropriate headform, when assessed with EN 168:2001, 10.2 using an angle of 45° for
rotation about the horizontal axis.
5.2.8.2 Eye guard
In the in-use position, the eye guard, in conjunction with designated helmet(s) shall cover at least
circular areas of diameter m centred on the pupils of the appropriate headform, as defined in
EN 168:2001, Figure 11, when assessed in accordance with EN 168:2001, 10.2.
5.2.9 Electrical properties
Visors shall at least match the electrical properties against which designated helmets have been tested.
Where a designated helmet complies with any electrical property requirements from the relevant
standard, the visor /helmet assembly shall at least satisfy the “conductive headform” requirement when
tested according to 6.4.1. If the helmet also claims “surface insulation”, the visor/helmet assembly shall
also satisfy this requirement when tested according to 6.4.2.
Where the designated helmet standard does not contain electrical requirements, the visor/helmet
assembly may optionally satisfy the “conductive headform” /or “conductive headform” and “surface
insulation” requirements when tested according to 6.4.1 and 6.4.2 as appropriate.
5.2.10 Protection against high speed particles
Testing to this clause is not required if optional testing to 5.5.3 is carried out.
Visors shall match or exceed the extremes of temperature against which designated helmets have been
tested. Before testing for protection against high-speed particles the conditioning shall be according
Annex A. Subsequently, the two test samples shall be impacted within 60 s of removal from conditioning
at each of the environments according to Table A.1 for 4 h.
The visors in the in-use position, in conjunction with designated helmet(s) shall meet at least the
requirements of EN 166:2001, 7.2.2 when tested at 120 m/s (medium energy impact) together with:
a) on impact, no part of the visor shall come into contact with any part of the headform (or any
designated corrective eyewear) with which it was not in contact before the impact;
b) after impact, the raising / lowering mechanism of the visor shall operate normally.
5.2.11 Flammability
5.2.11.1 General requirements
Testing to this clause is not necessary for face guards with increased thermal performance.
Flammability testing for face guards with increased thermal performance is defined in 5.3.3.
When tested according to 6.6 materials shall not show:
a) any drip during the whole test;
b) visible flame or glowing combustion 5 s or more after removal from the test flame.
5.2.11.2 Verification of the helmet flammability performance
Where a visor is fitted to a helmet with flammability performance the visor when tested in accordance
with the relevant helmet standard in the out-of-use position only shall not show any drip during the
whole test; visible flame or glowing combustion 5 s after removal from the test flame.
5.2.12 Resistance to contact with liquid chemicals
Visors shall at least match the liquid chemical resistance properties against which designated helmets
have been tested.
Where a designated helmet complies with liquid chemical resistance requirements from the relevant
standard, the visors and their means of fixing conforming to 5.2 or 5.3 shall be tested against at least the
chemicals listed in Table 3, in accordance with the procedure in 6.8. Where the designated helmet
standard does not contain liquid chemical resistance requirements, the visor and its means of fixing
may optionally be tested against at least the chemicals listed in Table 3, in accordance with the
procedure in 6.8.
A minimum of two visors shall be tested for each chemical, and shall satisfy the following requirements:
a) there shall be no significant degradation (e.g. cracking, crazing or opacity) to the visor or its means
of fixing for both test samples;
b) one visor shall be assessed for the ability of a wearer with normal or corrected vision to read
4 characters (100 ± 1) mm high at a distance of (10 ± 0,05) m at an ambient lighting level of
(500 ± 50) lx;
NOTE The purpose is to allow leaving the dangerous area without removing the visor.
c) protection against high-speed particles according to 5.2.10 or 5.5.3 if claimed, assessed on two test
samples (one frontal impact and one lateral impact);
d) flammability according to 5.2.11 or 5.3.3 as appropriate (without further conditioning) assessed on
one test sample.
Where testing is carried out using chemicals in addition to those listed in Table 3, details shall be
included in the information provided by the manufacturer.
Table 3 — List of chemicals for resistance testing of visor assemblies
Chemical Concentration (weight %)
Sulphuric acid 30 (aqueous)
Sodium hydroxide 10 (aqueous)
p-Xylene Undiluted
Butan-1-ol Undiluted
n-Heptane Undiluted
The same test sample(s) may be used for more than one of these assessments.
5.2.13 Visors attached to helmets with radiant heat performance
Where a visor is fitted to a helmet with radiant heat performance the visor, when tested in accordance
with the relevant helmet standard in the out-of-use position only shall not ignite, melt, drip or come
into contact with the test headform.
5.2.14 Ergonomics and practical performance
5.2.14.1 General
The visor/helmet assembly shall undergo practical performance tests under realistic conditions in
accordance with 6.9. These general tests serve the purpose of checking for shortcomings that cannot be
determined by the tests described elsewhere in this document.
1) Test samples used for practical performance tests shall be supplied separately by the manufacturer
in the appropriate sizes and shall not be utilized for any of the laboratory testing specified in
Annex A. The testing is a subjective assessment of the visor/helmet assembly by the test subject
(wearer) and the observer during the trial.
2) A record of the observer’s and test subject’s comments shall be made after the trial – see 6.9.5.5.
3) Clothing and footwear chosen shall not compromise any of the activities to be undertaken during
the practical performance testing.
5.2.14.2 Requirements
a) On testing, the visor in conjunction with the designated helmet shall not show any of the following:
1) a subject it should fit cannot wear it;
2) it does not stay in its parked position, or will not stay in place;
3) it compromises a vital function such as vision;
4) simple tasks to be performed while wearing it are impossible;
5) the subject refuses, or is unable, to continue this assessment due to pain or discomfort;
b) when the visor/helmet assembly is assessed by the test method given in 6.9.5, the following
requirements shall be met:
1) the visor/helmet assembly shall always remain in place during the activities listed under
6.9.5.3;
2) there shall not be any ‘No’ answers from any of the test subjects.
Specific aspects of the practical performance testing of the visor/helmet assembly which shall be
examined are given in 5.2.14.3 to 5.2.14.5.
5.2.14.3 Fitting and adjustment
Where parts of the visor and means of fixing are designed to be adjustable or replaceable, this shall be
achievable by hand, without the aid of special tools. Test in accordance with 6.3 and 6.9.
5.2.14.4 Positioning and operation
The visor shall be moveable between an in-use (protective) position or positions, and an out-of-use
(standby) position. The visor shall park in the various positions, requiring a deliberate action on the
part of the wearer to enable movement from one position to another. If the visor is able to park in
intermediate non-tested positions, a warning shall be provided in the information supplied (see
Clause 8 t)) that the stated levels of protection are only provided when the visor is fully in the in-use
protective position(s).
Movement of the visor shall not cause contact of the viewing surface with any part of the helmet except
for wiper strips or other parts deliberately intended to contact the viewing surface. This requirement
shall also be met during assessment of the resistance of the equipment to extremes of temperature
(5.2.5).
No part of a face guard shall come into contact with the face of the wearer (or any designated corrective
eyewear), in any position. Eye guards designed to fit closely may contact the wearer’s face along their
lower edge when adjusted in accordance with the manufacturer’s instructions, but shall not contact the
face (or any designated corrective eyewear) elsewhere. Test according to 6.3 and 6.9.
Use and positioning of the visor shall be achievable using both left and right hands, singly. For visors
with increased thermal performance (see 5.3), this action shall be achievable without difficulty while
wearing gloves conforming to EN 659, EN 407 or EN 12477 as appropriate. Test in accordance with 6.9.
5.2.14.5 Ergonomic compatibility with other equipment
The visor shall integrate satisfactorily with the relevant following items, as defined by the visor
manufacturer:
a) the designated helmet(s) with which it shall be used;
b) if claimed, any frame for corrective eyewear designated for use with the helmet/visor assembly;
c) if claimed, any other items designated to be worn simultaneously during use.
Test in accordance with 6.3 and 6.9. The test report shall identify any specific items used during these
tests.
Only frames for corrective eyewear which have been shown to be compatible with the visor / helmet
assembly should be used.
NOTE This assessment only addresses the ergonomic and practical use aspects of compatibility. Function and
performance of the separate items is not inferred by this assessment.
5.3 Face guards with increased thermal performance
5.3.1 General
In addition to relevant requirements of 5.2, face guards with increased thermal performance shall meet
the following requirements of 5.3.2 to 5.3.4.
5.3.2 Radiant heat
5.3.2.1 Radiant heat protection
The face guard, supported on its means of fixing and in the in-use position, shall be tested according to
6.5 at one of the following radiant heat fluxes, measured at the exposed surface of the face guard:
2 2
— Level R1: 7 kW/m + 0,5 kW/m ;
2 2
— Level R2: 14 kW/m + 1,0 kW/m .
NOTE These two levels are representative of the range of practical use conditions. Selection of the
appropriate level will need to follow a suitable and sufficient risk assessment by the user.
The temperature measured on the headform behind the face guard shall not increase by more than
25 °C above the initial sensor temperature during the 3 min exposure.
5.3.2.2 Radiant heat resistance
One face guard shall be exposed according to 6.5 in the in-use position, at the radiant heat flux used in
5.3.2.1. It shall satisfy the following requirements:
a) no part of the face guard shall melt, drip or ignite, nor come into contact with any part of the
headform with which it was not in contact before the test;
b) there shall be no significant degradation (e.g. cracking, crazing or opacity) to the visor or its means
of fixing for both test samples;
c) one visor shall be assessed for ability to read 4 characters (100 ± 1) mm high at a distance of
(10 ± 0,05) m at an ambient lighting level of (500 ± 50) lx;
d) after the exposure, and allowing the face guard to cool to ambient temperature for (60 ± 5) min, it
shall continue to satisfy the requirements for protection against high-speed particles according to
5.2.10 or 5.5.3 if claimed, assessed by one frontal impact;
e) it shall also continue to raise/lower correctly;
f) the exposed face guard shall not disturb the fit or function of corrective frames.
5.3.3 Flammability
When tested according to 6.7, following conditioning by storage for at least 72 h at (20 ± 2) °C and
(65 ± 5) % relative humidity after cleaning 5 times in accordance with 5.2.4, and final application of any
anti-fogging compound, if specified, no part of the face guard or means of fixing shall show:
a) any drip during the whole test;
b) visible flame or glowing combustion 5 s or more after removal from the test flame.
5.3.4 Resistance to molten metals and hot solids
Face guards and their means of fixing to the designated helmet(s) shall be tested:
a) in accordance with EN ISO 9185; the metal shall be aluminium, as specified in EN ISO 9185:2007,
Annex A, with a mass of (100 ± 10) g, and the face guard shall not:
1) be penetrated by the molten metal;
2) burn with the emission of flame after a period of 5 s has elapsed after the pouring of molten
metal has ceased;
b) in accordance with EN 168:2001, Clause 11; face guards and their means of fixing to the designated
helmet(s) shall prevent complete penetration of face guards and means of fixing to the helmet
within 7 s when tested according to EN 168:2001, Clause 11.
5.4 Mesh visors
Mesh visors for use with protective helmets shall meet the requirements of 5.1 and 5.2 of this document
except 5.2.3, 5.2.7.1, 5.2.9, 5.2.10 and 5.2.12.
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