EN 14253:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.QDYRGLORMechanische Schwingungen - Messung und rechnerische Ermittlung der Einwirkung von Ganzkörper-Schwingungen auf den Menschen am Arbeitsplatz im Hinblick auf seine Gesundheit - Praxisgerechte AnleitungVibrations mécaniques - Mesurage et calcul de l'effet sur la santé de l'exposition professionnelle aux vibrations transmises a l'ensemble du corps - Guide pratiqueMechanical vibration - Measurement and calculation of occupational exposure to whole-body vibration with reference to health - Practical guidance13.160Vpliv vibracij in udarcev na ljudiVibration and shock with respect to human beingsICS:Ta slovenski standard je istoveten z:EN 14253:2003SIST EN 14253:2004en01-oktober-2004SIST EN 14253:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14253November 2003ICS 13.160English versionMechanical vibration - Measurement and calculation ofoccupational exposure to whole-body vibration with reference tohealth - Practical guidanceVibrations mécaniques - Mesurage et calcul de l'effet sur lasanté de l'exposition professionnelle aux vibrationstransmises à l'ensemble du corps - Guide pratiqueMechanische Schwingungen - Messung und rechnerischeErmittlung der Einwirkung von Ganzkörper-Schwingungenauf den Menschen am Arbeitsplatz im Hinblick auf seineGesundheit - Praxisgerechte AnleitungThis European Standard was approved by CEN on 1 September 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14253:2003 ESIST EN 14253:2004

Examples of the calculation of daily vibration exposure.17Annex B (informative)
Some numerical examples of the determination of daily vibration exposure.19Bibliography.21SIST EN 14253:2004

å==NjjtT1 is the total measurement duration This procedure shall be carried out separately for vibration in each of the axes measured.b) Where the daily work consists of operations of shorter duration, which are repeated several times during aworking day, measurements for determination of the 8 h energy-equivalent vibration value can be made overcomplete work cycles. The number of work cycles over which measurements are made shall be sufficient toshow that the average value obtained is representative of the vibration from the operation throughout the day.c) Where no operations are repeated, the vibration from every operation shall be measured.d)Where there is no repeated work cycle of operations of short duration and the individual operations are shorterthan 3 min, the operations can be repeated in order to collect measurements over a minimum of 3 min, seeexample in clause A.3. As an alternative, simulated operations may be organized for making measurements of3 min duration.NOTEThe requirement of a minimum of 3 min is due to statistical reasons.5.5 Estimation of exposure timeThe total daily exposure duration shall be obtained for each operation or work cycle for which a vibration magnitudehas been established. This may be based on;a) a measurement of the actual exposure duration of a single operation or work cycle; andb) information on the number of operations or work cycles per working day.The first of these will be a measurement to determine how long an operator is exposed to vibration, and from whatsource, during a specified period. Various techniques may be used, for example:¾ use of a stopwatch;¾ analysis of video recordings;¾ activity sampling.A source of information may be work records, e.g. the number of lorries loaded and unloaded by fork-lift trucks.However, it is important to ensure that the information is compatible with the information required for an evaluationof daily vibration exposure. For example, work records might give very accurate information on the number ofcompleted work items at the end of each day, but where there is more than one operator, or unfinished work itemsat the end of a shift, this information may not be directly applicable to a vibration exposure evaluation.NOTEOperators asked for information on their typical daily vibration exposure duration will normally give an estimatewhich includes periods of time when there is no vibration (e.g. idling, lifting for a fork-lift truck). Therefore, such an approachoften results in an overestimation of the exposure duration.SIST EN 14253:2004
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