SIST EN 1078:2012
(Main)Helmets for pedal cyclists and for users of skateboards and roller skates
Helmets for pedal cyclists and for users of skateboards and roller skates
This European Standard specifies requirements and test methods for helmets worn by users of pedal cycles, skateboards and roller skates.
Requirements and the corresponding methods of test are given for the following:
- construction, including field of vision;
- shock absorbing properties;
- retention system properties, including chin strap and fastening devices;
- marking and information.
Helme für Radfahrer und für Benutzer von Skateboards und Rollschuhen
Diese Europäische Norm legt Anforderungen und Prüfverfahren für Helme fest, die durch Benutzer von
Fahrrädern, Skateboards und Rollschuhen getragen werden.
Die Anforderungen und die entsprechenden Prüfverfahren beziehen sich auf folgende Punkte:
- Konstruktion, einschließlich Sichtfeld;
- stoßdämpfende Eigenschaften;
- Eigenschaften der Trageeinrichtung, einschließlich Kinnriemen, und Befestigungsvorrichtungen;
- Kennzeichnung und Information.
Casques pour cyclistes et pour utilisateurs de planches à roulettes et de patins à roulettes
La présente Norme européenne énonce des exigences et méthodes d'essai pour les casques devant être
portés par les utilisateurs de cycles, planches à roulettes et patins à roulettes.
Les exigences et les méthodes d'essai correspondantes couvrent les aspects suivants :
- construction, y compris le champ de vision ;
- propriétés en matière d'absorption des chocs ;
- caractéristiques du système de rétention, y compris la jugulaire et les dispositifs de serrage ;
- marquage et information.
Čelade za kolesarje in uporabnike rolk in kotalk
Ta evropski standard določa zahteve in preskusne metode za čelade za kolesarje ter uporabnike rolk in kotalk. Podane so zahteve in ustrezne preskusne metode za naslednja področja: – sestava, skupaj z vidnim poljem; – lastnosti absorpcije udarcev; – lastnosti zadrževalnega sistema, skupaj s pasom za brado in napravami za pripenjanje; – označevanje in podatki.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Helme für Radfahrer und für Benutzer von Skateboards und RollschuhenCasques pour cyclistes et pour utilisateurs de planches à roulettes et de patins à roulettesHelmets for pedal cyclists and for users of skateboards and roller skates97.220.40Oprema za športe na prostem in vodne športeOutdoor and water sports equipment13.340.20Varovalna oprema za glavoHead protective equipmentICS:Ta slovenski standard je istoveten z:EN 1078:2012SIST EN 1078:2012en,fr,de01-julij-2012SIST EN 1078:2012SLOVENSKI
STANDARDSIST EN 1078:1998/A1:2006SIST EN 1078:19981DGRPHãþD
SIST EN 1078:2012
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1078
February 2012 ICS 13.340.20 Supersedes EN 1078:1997English Version
Helmets for pedal cyclists and for users of skateboards and roller skates
Casques pour cyclistes et pour utilisateurs de planches à roulettes et de patins à roulettes
Helme für Radfahrer und für Benutzer von Skateboards und Rollschuhen This European Standard was approved by CEN on 17 December 2011.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1078:2012: ESIST EN 1078:2012
EN 1078:2012 (E) 2 Contents Page Foreword . 3Introduction . 41Scope. 52Normative references . 53Terms and definitions . 54Requirements . 64.1Materials . 64.2Construction . 64.3Field of vision . 74.4Shock absorbing capacity. 94.5Durability . 94.6Retention system . 94.6.1General . 94.6.2Chin strap . 94.6.3Fastening device . 94.6.4Colour . 94.6.5Strength . 94.6.6Effectiveness . 94.6.7Ease of release . 105Testing. 105.1Headforms . 105.2Inspection and determination of mass . 105.3Number of samples and sequence of tests . 105.4Determination of shock absorbing capacity . 115.4.1Test area . 115.4.2Conditioning . 115.4.3Apparatus . 135.4.4Procedure . 155.5Determination of retention system strength and ease of release . 165.5.1Apparatus . 165.5.2Procedure . 165.6Determination of retention system effectiveness . 165.6.1Apparatus . 165.6.2Procedure . 205.7Determination of field of vision . 205.8Test report . 206Marking . 207Information supplied by the manufacturer . 21Annex A (informative)
Alternative procedure for artificial ageing . 22Annex B (informative)
Significant technical changes between this European Standard and EN 1078:1997 . 23Annex ZA (normative)
Relationship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC Personal Protective Equipment . 24Bibliography . 25 SIST EN 1078:2012
EN 1078:2012 (E) 3 Foreword This document (EN 1078:2012) has been prepared by 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 August 2012, and conflicting national standards shall be withdrawn at the latest by August 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1078:1997. 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 Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. Annex B provides details of significant technical changes between this European Standard and the previous edition. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
SIST EN 1078:2012
EN 1078:2012 (E) 4 Introduction The protection given by a helmet depends on the circumstances of the accident and wearing a helmet cannot always prevent death or long term disability. A proportion of the energy of an impact is absorbed by the helmet, thereby reducing the force of the blow sustained by the head. The structure of the helmet may be damaged in absorbing this energy and any helmet that sustains a severe blow needs to be replaced even if damage is not apparent. The technical committee which has prepared this European Standard realizes that it is of importance for the wearer's comfort and psychrometric performance that a helmet is ventilated. At the time the standard was prepared no method for measuring the ventilating capacity of a helmet was recognized. For that reason no requirements concerning ventilation or heat transmission have been introduced. Manufacturers of helmets are urged to design their helmets to encourage a flow of air over the wearer's head. Pedal cyclists' helmets and helmets for users of skateboards and roller skates are fitted with a retention system to retain the helmet on the head. However, there may be a foreseeable risk that helmets of young children could become trapped and thereby cause a risk of strangulation of the child. In such cases an impact protection helmet for young children (see EN 1080) should be used.
SIST EN 1078:2012
EN 1078:2012 (E) 5 1 Scope This European Standard specifies requirements and test methods for helmets worn by users of pedal cycles, skateboards and roller skates. Requirements and the corresponding methods of test are given for the following: construction, including field of vision; shock absorbing properties; retention system properties, including chin strap and fastening devices; marking and information. 2 Normative references The following referenced documents are indispensable for the application 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 ISO 6487, Road vehicles — Measurement techniques in impact tests — Instrumentation 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 protective helmet item to be worn on the head and intended to absorb the energy of an impact, thus reducing the risk of injury to the head 3.2 helmet type category of helmets which does not differ in such essential respects as the materials or dimensions or construction of the helmet, of the retention system or of the protective padding 3.3 padding
3.3.1 protective padding material used to absorb impact energy 3.3.2 comfort padding lining material provided for the wearer's comfort 3.3.3 sizing padding lining material used for adjustment of the helmet size SIST EN 1078:2012
EN 1078:2012 (E) 6 3.4 retention system complete assembly by means of which the helmet is maintained in position on the head including any devices for adjustment of the system or to enhance the wearer's comfort 3.5 chin-strap part of the retention system consisting of a strap that passes under the wearer's jaw to keep the helmet in position 3.6 basic plane of the human head plane at the level of the external ear opening (external auditory meatus) and the lower edge of the eye sockets (orbits) 3.7 basic plane of a headform plane relative to the headform that corresponds to the basic plane of the human head 3.8 reference plane construction plane parallel to the basic plane of the headform at a distance from it which is a function of the size of the headform 3.9 test area area of the helmet in which impact tests may be conducted which corresponds to the minimum protected area of the human head 4 Requirements 4.1 Materials For those parts of the helmet coming into contact with the skin, the material used should be known not to undergo appreciable alteration from contact with sweat or with substances likely to be found in toiletries. Materials shall not be used which are known to cause skin disorders. 4.2 Construction The helmet normally consists of a means of absorbing impact energy and means of retaining the helmet on the head in an accident. The helmet should be durable and withstand handling. The helmet shall be so designed and shaped that parts of it (visor, rivets, ventilators, edges, fastening device and the like) are not likely to injure the user in normal use. SIST EN 1078:2012
EN 1078:2012 (E) 7 NOTE Helmets should: have low weight; be ventilating; be easy to put on and take off; be usable with spectacles; not significantly interfere with the ability of the user to hear traffic noise. 4.3 Field of vision When tested in accordance with 5.7 there shall be no occultation in the field of vision bounded by angles as follows (see Figure 1): horizontally: min. 105° from the longitudinal vertical median plane to the left and right hand sides; upwards: min. 25° from the reference plane; downwards: min. 45° from the basic plane.
SIST EN 1078:2012
EN 1078:2012 (E) 8 Dimensions in millimetres
a) Section of headform in longitudinal vertical plane
b) Section of headform in reference plane Key 1 reference plane 2 basic plane 3 front 4 back 5 longitudinal vertical median plane 6 central transverse vertical plane NOTE 1 Longitudinal vertical median plane – equivalent to EN 960:2006, 2.8 “vertical longitudinal plane”. NOTE 2 Central transverse vertical plane – equivalent to EN 960:2006, 2.9 “vertical transverse plane”. Figure 1 — Field of vision SIST EN 1078:2012
EN 1078:2012 (E) 9 4.4 Shock absorbing capacity The helmet shall give protection to the forehead, rear, sides, temples and crown of the head. When tested in accordance with 5.3 and 5.4 the peak acceleration shall not, for each impact, exceed 250 g for the velocity of 5,42 010,+, m/s on the flat anvil, and 4,57010,+ m/s on the kerbstone anvil. NOTE These are theoretically equivalent to 1 497 mm and 1 064 mm drop heights respectively. 4.5 Durability After being tested the helmet shall not exhibit damage that could cause significant injury to the wearer (sharp edges, points). 4.6 Retention system 4.6.1 General Means shall be provided for retaining the helmet on the wearer's head. All parts of the retention system shall be securely attached to the helmet. 4.6.2 Chin strap The chin strap shall not include a chin cup. Any chin strap shall be no less than 15 mm wide. Chin straps may be fitted with means of enhancing comfort for the wearer. 4.6.3 Fastening device Any retention system shall be fitted with a device to adjust and maintain tension in the system. The device shall be capable of adjustment so that the buckle does not sit on the jaw bone. 4.6.4 Colour No part of the retention system shall be coloured green. NOTE It is recommended that the opening mechanism be marked with red or orange colour. 4.6.5 Strength When tested in accordance with 5.5, the dynamic extension of the retention system shall not exceed 35 mm and the residual extension shall not exceed 25 mm. For this purpose, extension includes slippage of the fastening device. Damage to the retention system shall be accepted provided that the above requirements are met. NOTE In this test, slippage of the fastening device can be measured and recorded separately from other contributions to the extension but this is for information only and is not subject to a separate requirement. 4.6.6 Effectiveness When tested in accordance with 5.6 the helmet shall not come off the headform. SIST EN 1078:2012
EN 1078:2012 (E) 10 4.6.7 Ease of release Following the strength test in accordance with 5.5 and with the load still applied, it shall be possible to open the release system with one hand. 5 Testing 5.1 Headforms The headforms used shall comply with EN 960:2006. The sizes in Table 1 shall be used, except for determination of shock absorbing capacity, for which only size designations 495, 535, 575, 605 and 625 shall be used. For determination of retention system strength and ease of release, the headforms used shall comply with EN 960:2006 at least down from the basic plane. NOTE Table 1 also gives the EN 960:1994 equivalent letter codes to the EN 960:2006 size designations for headforms with similar nominal dimensions. These are as given in EN 960:2006, Annex C. The EN 960:2006 size designation approximates to the circumference of the headform at the reference plane, in mm. Table 1 — Sizes of headforms Size designation
Inside circumference of helmet (EN 960
...
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Helme für Radfahrer und für Benutzer von Skateboards und RollschuhenCasques pour cyclistes et pour utilisateurs de planches à roulettes et de patins à roulettesHelmets for pedal cyclists and for users of skateboards and roller skates13.340.20Varovalna oprema za glavoHead protective equipmentICS:Ta slovenski standard je istoveten z:FprEN 1078kSIST FprEN 1078:2011en,fr,de01-september-2011kSIST FprEN 1078:2011SLOVENSKI
STANDARD
kSIST FprEN 1078:2011
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
FINAL DRAFT
FprEN 1078
June 2011 ICS 13.340.20 Will supersede EN 1078:1997English Version
Helmets for pedal cyclists and for users of skateboards and roller skates
Casques pour cyclistes et pour utilisateurs de planches à roulettes et de patins à roulettes
Helme für Radfahrer und für Benutzer von Skateboards und Rollschuhen This draft European Standard is submitted to CEN members for unique acceptance procedure. 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland 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
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. FprEN 1078:2011: EkSIST FprEN 1078:2011
FprEN 1078:2011 (E) 2 Contents Page Foreword . 3Introduction . 41Scope. 52Normative references . 53Terms and definitions . 54Requirements . 64.1Materials . 64.2Construction . 64.3Field of vision . 74.4Shock absorbing capacity. 94.5Durability . 94.6Retention system . 94.6.1General . 94.6.2Chin strap . 94.6.3Fastening device . 94.6.4Colour . 94.6.5Strength . 94.6.6Effectiveness . 94.6.7Ease of release . 105Testing. 105.1Headforms . 105.2Inspection and determination of mass . 105.3Number of samples and sequence of tests . 105.4Determination of shock absorbing capacity . 115.4.1Test area . 115.4.2Conditioning . 115.4.3Apparatus . 135.4.4Procedure . 155.5Determination of retention system strength and ease of release . 165.5.1Apparatus . 165.5.2Procedure . 165.6Determination of retention system effectiveness . 165.6.1Apparatus . 165.6.2Procedure . 205.7Determination of field of vision . 205.8Test report . 206Marking . 207Information supplied by the manufacturer . 21Annex A (informative)
Alternative procedure for artificial ageing . 22Annex B (informative)
Significant technical changes between this European Standard and EN 1078:1997 . 23Annex ZA (normative)
Relationship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC Personal Protective Equipment . 24Bibliography . 25 kSIST FprEN 1078:2011
FprEN 1078:2011 (E) 3 Foreword This document (FprEN 1078:2011) has been prepared by Technical Committee CEN/TC 158 “Head protection”, the secretariat of which is held by BSI. This document is currently submitted to the Unique Acceptance Procedure. This document will supersede EN 1078:1997. Annex B provides details of significant technical changes between this European Standard and the previous edition. 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 Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.
kSIST FprEN 1078:2011
FprEN 1078:2011 (E) 4 Introduction The protection given by a helmet depends on the circumstances of the accident and wearing a helmet cannot always prevent death or long term disability. A proportion of the energy of an impact is absorbed by the helmet, thereby reducing the force of the blow sustained by the head. The structure of the helmet may be damaged in absorbing this energy and any helmet that sustains a severe blow needs to be replaced even if damage is not apparent. The technical committee which has prepared this European Standard realizes that it is of importance for the wearer's comfort and psychrometric performance that a helmet is ventilated. At the time the standard was prepared no method for measuring the ventilating capacity of a helmet was recognized. For that reason no requirements concerning ventilation or heat transmission have been introduced. Manufacturers of helmets are urged to design their helmets to encourage a flow of air over the wearer's head. Pedal cyclists' helmets and helmets for users of skateboards and roller skates are fitted with a retention system to retain the helmet on the head. However, there may be a foreseeable risk that helmets of young children could become trapped and thereby cause a risk of strangulation of the child. In such cases an impact protection helmet for young children (see EN 1080) should be used.
kSIST FprEN 1078:2011
FprEN 1078:2011 (E) 5
1 Scope This European Standard specifies requirements and test methods for helmets worn by users of pedal cycles, skateboards and roller skates. Requirements and the corresponding methods of test are given for the following: construction, including field of vision; shock absorbing properties; retention system properties, including chin strap and fastening devices; marking and information. 2 Normative references The following referenced documents are indispensable for the application 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 ISO 6487:2002, Road vehicles — Measurement techniques in impact tests — Instrumentation 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 protective helmet item to be worn on the head and intended to absorb the energy of an impact, thus reducing the risk of injury to the head 3.2 helmet type category of helmets which does not differ in such essential respects as the materials or dimensions or construction of the helmet, of the retention system or of the protective padding 3.3 padding
3.3.1 protective padding material used to absorb impact energy 3.3.2 comfort padding lining material provided for the wearer's comfort 3.3.3 sizing padding lining material used for adjustment of the helmet size kSIST FprEN 1078:2011
FprEN 1078:2011 (E) 6 3.4 retention system complete assembly by means of which the helmet is maintained in position on the head including any devices for adjustment of the system or to enhance the wearer's comfort 3.5 chin-strap part of the retention system consisting of a strap that passes under the wearer's jaw to keep the helmet in position 3.6 basic plane of the human head plane at the level of the external ear opening (external auditory meatus) and the lower edge of the eye sockets (orbits) 3.7 basic plane of a headform plane relative to the headform that corresponds to the basic plane of the human head 3.8 reference plane construction plane parallel to the basic plane of the headform at a distance from it which is a function of the size of the headform 3.9 test area area of the helmet in which impact tests may be conducted which corresponds to the minimum protected area of the human head 4 Requirements 4.1 Materials For those parts of the helmet coming into contact with the skin, the material used should be known not to undergo appreciable alteration from contact with sweat or with substances likely to be found in toiletries. Materials shall not be used which are known to cause skin disorders. 4.2 Construction The helmet normally consists of a means of absorbing impact energy and means of retaining the helmet on the head in an accident. The helmet should be durable and withstand handling. The helmet shall be so designed and shaped that parts of it (visor, rivets, ventilators, edges, fastening device and the like) are not likely to injure the user in normal use. kSIST FprEN 1078:2011
FprEN 1078:2011 (E) 7 NOTE Helmets should: have low weight; be ventilating; be easy to put on and take off; be usable with spectacles; not significantly interfere with the ability of the user to hear traffic noise. 4.3 Field of vision When tested in accordance with 5.7 there shall be no occultation in the field of vision bounded by angles as follows (see Figure 1): horizontally: min. 105° from the longitudinal vertical median plane to the left and right hand sides; upwards: min. 25° from the reference plane; downwards: min. 45° from the basic plane.
kSIST FprEN 1078:2011
FprEN 1078:2011 (E) 8 Dimensions in millimetres
Section of headform in longitudinal vertical plane
Section of headform in reference plane Key 1 reference plane 2 basic plane 3 front 4 back 5 longitudinal vertical median plane 6 central transverse vertical plane NOTE 1 Longitudinal vertical median plane – equivalent to EN 960:2006, 2.8 “vertical longitudinal plane”. NOTE 2 Central transverse vertical plane – equivalent to EN 960:2006, 2.9 “vertical transverse plane”. Figure 1 — Field of vision kSIST FprEN 1078:2011
FprEN 1078:2011 (E) 9
4.4 Shock absorbing capacity The helmet shall give protection to the forehead, rear, sides, temples and crown of the head. When tested in accordance with 5.3 and 5.4 the peak acceleration shall not, for each impact, exceed 250 g for the velocity of 5,42 010,+, m/s on the flat anvil, and 4,57010,+ m/s on the kerbstone anvil. NOTE These are theoretically equivalent to 1 497 mm and 1 064 mm drop heights respectively. 4.5 Durability After being tested the helmet shall not exhibit damage that could cause significant injury to the wearer (sharp edges, points). 4.6 Retention system 4.6.1 General Means shall be provided for retaining the helmet on the wearer's head. All parts of the retention system shall be securely attached to the helmet. 4.6.2 Chin strap The chin strap shall not include a chin cup. Any chin strap shall be not less than 15 mm wide. Chin straps may be fitted with means of enhancing comfort for the wearer. 4.6.3 Fastening device Any retention system shall be fitted with a device to adjust and maintain tension in the system. The device shall be capable of adjustment so that the buckle does not sit on the jaw bone. 4.6.4 Colour No part of the retention system shall be coloured green. NOTE It is recommended that the opening mechanism be marked with red or orange colour. 4.6.5 Strength When tested in accordance with 5.5, the dynamic extension of the retention system shall not exceed 35 mm and the residual extension shall not exceed 25 mm. For this purpose, extension includes slippage of the fastening device. Damage to the retention system shall be accepted provided that the above requirements are met. NOTE In this test, slippage of the fastening device can be measured and recorded separately from other contributions to the extension but this is for information only and is not subject to a separate requirement. 4.6.6 Effectiveness When tested in accordance with 5.6 the helmet shall not come off the headform. kSIST FprEN 1078:2011
FprEN 1078:2011 (E) 10 4.6.7 Ease of release Following the strength test in accordance with 5.5 and with the load still applied, it shall be possible to open the release system with one hand. 5 Testing 5.1 Headforms The headforms used shall comply with EN 960:2006. The sizes in Table 1 shall be used, except for determination of shock absorbing capacity, for which only size designations 495, 535, 575, 605 and 625 shall be used. For determination of retention system strength and ease of release, the headforms used shall comply with EN 960:2006 at least down from the basic plane. NOTE Table 1 also gives the EN 1994:2006 equivalent letter codes to the EN 960:2006 size designations for headforms with similar nominal dimensions. These are as given in EN 960:2006, Annex C. The EN 960:2006 size designation approximates to the circumference of the headform at the reference plane, in mm. Table 1 — Sizes of headforms Size designation
Inside circumference of helmet (EN 960:1994 equivalent) mm 495 (A) 500 515 (C) 520 535 (E) 540 555 (G) 560 575 (J) 570 585 (K) 580 605 (M) 600 625 (O) 620
5.2 Inspection and determination of mass Inspect the helmet to ascertain whether it is suitable for its intended purpose and fulfils the general requirements in 4.2. Determine the mass of the helmets of the same size submitted for testing. Calculate and record the mean value in g rounded off to the nearest 10 g, stating the size of the helmet. 5.3 Number of samples and sequence of tests For each helmet type, four helmets for each headform size that fits within the manufacturers' claimed hea
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