SIST EN 12492:2012

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.SUHVNXVQHPHWRGHBergsteigerausrüstung - Bergsteigerhelme - Sicherheitstechnische Anforderungen und PrüfverfahrenEquipements d'alpinisme et d'escalade - Casques d'alpinistes - Exigences de sécurité et méthodes d'essaiMountaineering equipment - Helmets for mountaineers - Safety requirements and test methods97.220.40Oprema 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 12492:2012SIST EN 12492:2012en,fr,de01-julij-2012SIST EN 12492:2012SLOVENSKI
STANDARDSIST EN 12492:2000/A1:2003SIST EN 12492:20001DGRPHãþD



SIST EN 12492:2012



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12492
February 2012 ICS 13.340.20 Supersedes EN 12492:2000English Version
Mountaineering equipment - Helmets for mountaineers - Safety requirements and test methods
Equipements d'alpinisme et d'escalade - Casques d'alpinistes - Exigences de sécurité et méthodes d'essai
Bergsteigerausrüstung - Bergsteigerhelme - Sicherheitstechnische Anforderungen und Prüfverfahren 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 12492:2012: ESIST EN 12492:2012



EN 12492:2012 (E) 2 Contents Page Foreword .41Scope .62Normative references .63Terms and definitions .64Requirements .74.1Construction requirements .74.1.1Materials .74.1.2Projections .74.1.3Retention system .74.1.4Ventilation .74.2Performance requirements .74.2.1Shock absorption.74.2.2Penetration .84.2.3Retention system strength .84.2.4Retention system effectiveness (roll off) .85Test methods .85.1Sampling .85.2Helmet adjustment .85.3Conditioning .95.3.1General .95.3.2U.V. ageing .95.3.3åThermal plus’ conditioning .95.3.4åThermal minus’ conditioning .95.4Headforms .95.5Shock absorption. 105.5.1Impact points . 105.5.2Principle . 105.5.3Apparatus . 105.5.4Procedure . 125.5.5Report . 125.6Resistance to penetration . 125.6.1Impact area . 125.6.2Principle . 125.6.3Apparatus . 125.6.4Procedure . 135.6.5Report . 135.7Retention system strength . 135.7.1Principle . 135.7.2Apparatus . 145.7.3Procedure . 145.7.4Report . 145.8Retention system effectiveness . 145.8.1General . 145.8.2Principle . 155.8.3Apparatus . 155.8.4Procedure . 165.8.5Report . 166Marking and labelling . 216.1Marking . 21SIST EN 12492:2012



EN 12492:2012 (E) 3 6.2Labelling . 217Information supplied by the manufacturer . 21Annex A (informative)
Alternative test method for artificial ageing . 22Annex B (informative)
Significant technical changes between this European Standard and EN 12492:2000 . 23Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC Personal Protective Equipment . 24Bibliography . 25 SIST EN 12492:2012



EN 12492:2012 (E) 4 Foreword This document (EN 12492:2012) 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 12492:2000. 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 12492:2012



EN 12492:2012 (E) 5 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. Mountaineers’ helmets are fitted with a retention system to retain the helmet on the head. However, there may be a foreseeable risk that helmets could become trapped and thereby cause a risk of strangulation. SIST EN 12492:2012



EN 12492:2012 (E) 6 1 Scope This European Standard specifies safety requirements and test methods for safety helmets for use in mountaineering. 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 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 helmet for mountaineers (hereafter referred to as helmet) headwear primarily intended to protect the upper part of a wearer's head against hazards which might occur during activities carried out by mountaineers 3.2 shell hard, smoothly finished material that provides the general outer form of the helmet 3.3 helmet type helmet which is characterized by: a) the tradename or mark; b) the materials and dimensions of the shell; c) the materials and dimensions of the protective padding; d) the materials and dimensions of the retention system 3.4 protective padding material which is used to absorb impact energy 3.5 comfort padding liner material provided for the wearer's comfort 3.6 sizing padding liner material used for adjustment of the helmet size 3.7 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 SIST EN 12492:2012



EN 12492:2012 (E) 7 3.8 chin strap part of the retention system consisting of a strap which passes under the wearer's jaw to retain the helmet in position 3.9 headform shape replacing the head which is used for testing certain characteristics Note 1 to entry: The headform is designed in accordance with EN 960:2006. 4 Requirements 4.1 Construction requirements 4.1.1 Materials For those parts of the helmet that come into contact with the skin, materials which are known to be likely to cause skin irritation or any adverse effect on health shall not be used. For a material not in general use, advice as to its suitability shall be sought before its introduction. 4.1.2 Projections There shall be no sharp edges, roughness or projection on any part of the helmet which is in contact or potential contact with the wearer when the helmet is worn, such as is likely to cause injury to the wearer. 4.1.3 Retention system The helmet shall be fitted with a retention system, including a chin strap. The retention system shall have at least three separate points of attachment to the shell. The chin strap shall be adjustable in length. That part of the chin strap which comes into contact with the jaw shall have a minimum width of 15 mm under a load of 250 N. 4.1.4 Ventilation All helmets shall be ventilated. The sum of the cross-sectional areas of such ventilation shall not be less than 4 cm2 when measured on the surface of the helmet. 4.2 Performance requirements 4.2.1 Shock absorption 4.2.1.1 Vertical energy absorption capacity When a helmet is tested by the method described in 5.5, the force transmitted to the headform shall not exceed 10 kN, for a drop height of (2 000 ± 10) mm of the hemispherical striker described in 5.5.3.4. 4.2.1.2 Front energy absorption capacity When a helmet is tested by the method described in 5.5, the force transmitted to the headform shall not exceed 10 kN, for a drop height of (500 ± 10) mm of the flat striker described in 5.5.3.4. SIST EN 12492:2012



EN 12492:2012 (E) 8 4.2.1.3 Side energy absorption capacity When a helmet is tested by the method described in 5.5, the force transmitted to the headform shall not exceed 10 kN, for a drop height of (500 ± 10) mm of the flat striker described in 5.5.3.4. 4.2.1.4 Rear energy absorption capacity When a helmet is tested by the method described in 5.5, the force transmitted to the headform shall not exceed 10 kN, for a drop height of (500 ± 10) mm of the flat striker described in 5.5.3.4. 4.2.2 Penetration When a helmet is tested on two points of impact, apart from each other as at least 50 mm, by the method described in 5.6, there shall be no contact between the striker and the headform, for a drop height of (1 000 ± 5) mm of the conical striker described in 5.6.3.4. 4.2.3 Retention system strength When a helmet is tested by the method described in 5.7, the maximum elongation of the whole system shall not exceed 25 mm. 4.2.4 Retention system effectiveness (roll off) When a helmet is tested by the method described in 5.8, for the front way and rear way tests, the helmet shall not come off the headform. 5 Test methods 5.1 Sampling For every type of helmet, helmet samples shall be submitted for testing in the condition in which they are offered for sale, including any requisite holes in the shell and any means of attachment for accessories specified by the manufacturer. No helmet that has been subjected to testing shall be offered for sale. For every type of helmet, 11 helmet samples are required for the tests (see Table 1):  6 of the smallest size of the range of the helmet type; and  5 of the largest size of the range of the helmet type. 5.2 Helmet adjustment Before any testing on a headform, the helmet shall be adjusted to the headform size and positioned in accordance with the manufacturer's instructions. The smallest headform is the smallest size, in accordance with 5.4, which is within the size range specified by the manufacturer for the particular size and type of helmet. The largest headform is the largest size, in accordance with 5.4, which is within the size range specified by the manufacturer for the particular size and type of helmet. SIST EN 12492:2012



EN 12492:2012 (E) 9 5.3 Conditioning 5.3.1 General Before any testing the helmet shall be conditioned in accordance with the conditioning defined in Table 1 and the relevant specifications defined in 5.3.2 to 5.3.4. Table 1 — Conditioning of test samples and size of test headforms
Stabilizing procedure UV ageing Thermal plus +35 °C Thermal minus -20 °C Ambient +20 °C Helmet N° Top impact Yes Smallest Largest Largest
1-2-3 Front impact Yes Size and conditioning to be chosen by the laboratory
4 Side impact Yes Size and conditioning to be chosen by the laboratory
5 Back impact Yes Size and conditioning to be chosen by the laboratory
6 Penetration Yes Largest Smallest Smallest
7-8-9 Retention strength Yes -- -- -- Smallest 10 Roll off front and back Yes -- -- -- Smallest 11
5.3.2 U.V. ageing 5.3.2.1 Apparatus A high pressure xenon 450 Watt lamp with quartz casing, operated in accordance with the lamp manufacturer's instructions. A means to support the helmet so that it is exposed to the radiation. 5.3.2.2 Procedure Secure the helmet so that the vertical axis through the crown of the helmet (as worn) is perpendicular to the axis of the lamp and the distance between the crown of the helmet and the axis of the lamp is (150 ± 5) mm. Expose the helmet to the radiation for (400 ± 4) h. It shall then be removed and allowed to return to laboratory ambient conditions. NOTE The method described in Annex A may be used as an alternative. 5.3.3 åThermal plus’ conditioning The helmet shall be exposed to a temperature of (35 ± 2) °C for between 4 h and 24 h. 5.3.4 åThermal minus’ conditioning The helmet shall be exposed to a temperature of (-20 ± 2) °C for between 4 h and 24 h. 5.4 Headforms The head forms used shall comply with EN 960:2006. The sizes in Table 2 shall be used, except for determination of shock absorbing capacity, for which only size designations 495, 535, 575, 605 and 625 shall be used. SIST EN 12492:2012



EN 12492:2012 (E) 10 NOTE Table 2 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 2 — Sizes of headforms Size designation
(circumference of headform at reference plane, mm) Code letter (EN 960:1994) 495 A 515 C 535 E 555 G 575 J 585 K 605 M 625 O
5.5 Shock absorption 5.5.1 Impact points The four impact points are shown in Figure 1. 5.5.2 Principle A specified striker is allowed to fall with specified energy on to a helmet which is fitted to a rigidly mounted headform. The transmitted force is measured by means of a force transducer located beneath the headform. 5.5.3 Apparatus 5.5.3.1 General The apparatus shall include:  a base;  a test headform;  a striker;  a guidance system;  a me
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