SIST EN 1621-2:2014

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Motorradfahrer-Schutzkleidung gegen mechanische Belastung - Teil 2: Rückenprotektoren - Anforderungen und PrüfverfahrenVêtements de protection contre les chocs mécaniques pour motocyclistes - Partie 2 : Protecteurs dorsaux - Exigences et méthodes d'essaiMotorcyclists' protective clothing against mechanical impact - Part 2: Motorcyclists' back protectors - Requirements and test methods43.140Motorna kolesa in mopediMotor cycles and mopeds13.340.10Varovalna oblekaProtective clothingICS:Ta slovenski standard je istoveten z:EN 1621-2:2014SIST EN 1621-2:2014en,fr,de01-marec-2014SIST EN 1621-2:2014SLOVENSKI
STANDARDSIST EN 1621-2:2003/AC:2006SIST EN 1621-2:20031DGRPHãþD



SIST EN 1621-2:2014



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1621-2
January 2014 ICS 13.340.10 Supersedes EN 1621-2:2003English Version
Motorcyclists' protective clothing against mechanical impact - Part 2: Motorcyclists' back protectors - Requirements and test methods
Vêtements de protection contre les chocs mécaniques pour motocyclistes - Partie 2 : Protecteurs dorsaux - Exigences et méthodes d'essai
Motorradfahrer-Schutzkleidung gegen mechanische Belastung - Teil 2: Rückenprotektoren - Anforderungen und Prüfverfahren This European Standard was approved by CEN on 26 October 2013.
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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
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COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
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Avenue Marnix 17,
B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1621-2:2014 ESIST EN 1621-2:2014



EN 1621-2:2014 (E) 2 Contents Page Foreword .3 Introduction .4 1 Scope .5 2 Normative references .5 3 Terms and definitions .5 4 Requirements .6 4.1 General .6 4.2 Innocuousness .6 4.3 Minimum dimensions of zones of protection .6 4.4 Impact attenuation .7 4.5 Ergonomic requirements .8 4.6 Sizing and size marking .8 5 Test methods and equipment .8 5.1 Impact attenuation .8 5.1.1 Equipment .8 5.1.2 Templates .9 5.1.3 Number of samples. 10 5.1.4 Number of tests . 10 5.1.5 Procedure . 10 5.1.6 Tests . 12 5.2 Ergonomic assessment . 13 5.2.1 General . 13 5.2.2 Tests . 13 5.3 Expression of test results . 14 5.4 Test report . 14 6 Marking . 14 7 Information supplied by the manufacturer . 15 Annex A (informative)
Method of metrological confirmation. 18 A.1 Method of metrological confirmation . 18 A.2 Reference material . 18 A.3 Preparation of the test sample . 18 A.4 Procedure . 18 A.5 Calculation . 18 A.6 Precision . 19 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC . 20 Bibliography . 21
SIST EN 1621-2:2014



EN 1621-2:2014 (E) 3 Foreword This document (EN 1621-2:2014) has been prepared by Technical Committee CEN/TC 162 “Protective clothing including hand and arm protection and lifejackets”, the secretariat of which is held by DIN. 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 July 2014, and conflicting national standards shall be withdrawn at the latest by July 2014. 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 1621-2:2003. 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 89/686/EEC, see informative Annex ZA, which is an integral part of this document. The main technical changes with respect to the 2003 edition are listed below: — a new shape of protector has been added, the central back protector; — requirements concerning innocuousness have been added; — requirements concerning the wet impact test (mandatory) and the high and low temperature impact tests (optional) have been added; — the waist to shoulder length shall be specified as a range. EN 1621 consists of the following parts, under the general title Motorcyclists’ protective clothing against mechanical impact: — Part 1: Motorcyclists' limb joint impact protectors — Requirements and test methods — Part 2: Motorcyclists' back protectors — Requirements and test methods (the present document) — Part 3: Requirements and test methods for chest protectors1) — Part 4: Motorcyclists' inflatable protectors — Requirements and test methods 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, Former Yugoslav Republic of Macedonia, 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.
1) Under development. SIST EN 1621-2:2014



EN 1621-2:2014 (E) 4 Introduction Motorcyclist’s back protectors are devices worn within or on top of other protective clothing, covering at least a portion of the back as corresponding to one of the three shapes of protectors described in the standard. The performance requirements have been chosen as a best practical compromise between protection, comfort, and ergonomic requirements. Protectors that are too stiff or heavy will not be worn. The test methods are designed to provide information on protection against impacts against edges such as kerb stones. The force levels in the tests do not compare directly with the forces to which riders are exposed in accidents, but experiences have shown that products meeting the requirements of this European Standard reduce the incidence and severity of injuries. This standard accommodates three different typologies of back protector, which are offered to encourage the adoption of certified protection within the different disciplines of motorcycling and the type of rider. These are namely full back, central back and lower back (lumbar) protector, the definition of which are provided in Clause 3. Two performance levels are specified for motorcyclist's back protectors against impacts. These are level 1 for protectors designed to give protection whilst having low ergonomic penalties associated with its use and level 2 for protectors providing an increased protection with respect to level 1. There may be, however, weight and restriction penalties associated with level 2 protection. SIST EN 1621-2:2014



EN 1621-2:2014 (E) 5 1 Scope This European Standard specifies the minimum coverage to be provided by motorcyclists’ back protectors worn by riders in normal traffic situations. The standard contains the requirements for the performance of the protectors under impact and details of the test methods. Requirements for sizing, ergonomic requirements, and requirements for innocuousness, labelling and the provision of information are included. 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 1621-1, Motorcyclists' protective clothing against mechanical impact - Part 1: Motorcyclists' limb joint impact protectors - Requirements and test methods 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 full back protector FB protective device worn on the back intended to reduce the severity of injuries caused by impacts to the central back and scapula area 3.2 central back protector CB protective device worn on the back intended to reduce the severity of injuries caused by impacts to central back area 3.3 lower back protector lumbar protector LB protective device worn on the back intended to reduce the severity of injuries caused by impacts to the lumbar region 3.4 zone of protection specific area of the protective device that is intended to provide protection 3.5 waist to shoulder length length measured on the back from the waist line to the junction of the shoulder to the neck at the highest point (see Figure 1) Note 1 to entry: The sizing system of back protectors is based on the user's waist to shoulder length, as no consistent relationship to the body height exists. The dimension is intended to be measured on the body with a tape measure. SIST EN 1621-2:2014



EN 1621-2:2014 (E) 6
Key 1 waist to shoulder length 2 waist line Figure 1 — Body dimensions 3.6 waist line on a subject standing upright, the line in the plane of the waist, 50 mm above the supra-crystal plane which is at the level of the highest points of the iliac crests Note 1 to entry: The dimension of 50 mm is an example which refers to a subject of height 1,78 m; it needs to be scaled pro rata with the height of the actual subject (see following sample data): Body height (m) 1,56 1,60 1,64 1,68 1,72 1,78 1,82 1,88 1,92 1,96 Distance above iliac crest (mm) 44 45 46 47 48 50 51 53 54 55 4 Requirements 4.1 General Motorcyclists’ back protectors shall meet an overall requirement that they are safe to use, comfortable to wear and fit for their purpose. Back protectors shall be provided with means of restraint and/or adjustments capable to ensure that the protector is maintained in position during use. This requirement is not applicable for protectors to be inserted or incorporated into garments. Testing shall be carried out according to 5.2. 4.2 Innocuousness The innocuousness shall comply with the requirements of EN 1621-1. 4.3 Minimum dimensions of zones of protection Motorcyclists’ back protectors shall have a minimum zone of protection related to the waist to shoulder measure of the largest user indicated by the marking. The minimum dimensions of the zone of protection shall be determined from Table 1, for the upper value of the size range (see 4.6). SIST EN 1621-2:2014



EN 1621-2:2014 (E) 7
a) Full back protector b) Central back protector c) Lower back protector Figure 2 — Minimum dimensions of zones of protection Table 1 — Dimensions of minimum zone of protection for back protector Dimensions in Figure 2 A B C D E F 72 % 29 % 44 % 29 % 32 % 25 % NOTE All dimensions refer to the waist to shoulder length (100 %) of the biggest user. The dimensions and position of the zone of protection, relative to the coverage provided by the whole product, shall be given in the information supplied by the manufacturer (see Clause 7). NOTE The minimum dimensions of the zones of protection are usually marked on the specimens during the testing procedures. 4.4 Impact attenuation When impact protection is tested in accordance with 5.1.6.1 (ambient impact test), 5.1.6.2 (wet impact test) and, if required, 5.1.6.3 (high temperature impact test) and/or 5.1.6.4 (low temperature impact test), the transmitted force shall conform to the values in Table 2. Level 1 or 2 cannot be awarded unless such level is achieved under all of the claimed test conditions. Table 2 — Performance levels Level 1 Level 2 mean value: ≤ 18 kN single strike: ≤ 24 kN mean value: ≤ 9 kN single strike: ≤ 12 kN After each test, there shall be no fragmentation of the sample and no sharp edges shall be formed. However, formation of cracks and loss of soft debris is permissible. SIST EN 1621-2:2014



EN 1621-2:2014 (E) 8 4.5 Ergonomic requirements When examined and tested in accordance with 5.2, back protectors shall be found satisfactory for the use intended for motorcycle as indicated in the information supplied by the manufacturer. The centre line of the protective area shall be in line with the vertebra; the lower back protector shall cover the lumbar region of the back. The requirements are fulfilled if all answers to 5.2.2 are “Yes”. 4.6 Sizing and size marking Motorcyclists’ back protectors shall be marked with their sizing using a pictogram (see Figure 6) in accordance with Figure 1. The waist to shoulder length, expressed in centimetres, shall be specified as a range up to max. 5 cm. Testing is done according to 5.2. 5 Test methods and equipment 5.1 Impact attenuation 5.1.1 Equipment 5.1.1.1 Dropping apparatus The apparatus shall be such that a mass (“falling weight”) can be released in order to drop along a guided vertical path onto the sample placed on a test anvil. The centre of the mass of the falling weight shall lie over the centre of the anvil. 5.1.1.2 Bar impactor A bar impactor which shall be rectangular with a length, h1, equal to (160 ± 2) mm, a width, h2, at the top, equal to (50 ± 1) mm and with a cylindrical face with a radius, R, equal to (12,5 ± 0,1) mm shall be provided, see Figure 3. The mass of the impactor and guided mass shall be (5 000 ± 50) g and its kinetic energy on impact shall be (50 ± 1,5) J. Dimensions in millimetres
Figure 3 — Bar impactor 5.1.1.3 Anvil The anvil shall be made of polished steel with the following dimensions l1 equal to (190 ± 20) mm, l2 equal to (100 ± 2) mm and r1 equal to (150 ± 5) mm, see Figure 4. SIST EN 1621-2:2014



EN 1621-2:2014 (E) 9 The anvil shall be attached through a piezoelectric load cell or equivalent force transducer to a mass of at least 500 kg. The load cell or force transducer shall be preloaded to the manufacturer’s instructions, if applicable.
Key 1 load cell Figure 4 — Anvil 5.1.1.4 Force measurement instrumentation The anvi
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