1 Occupational vibration syndrome Exposure, standards, surveillance Department of Occupational MedicineFinnish Institute of Occupational HealthMarkku SainioMarkku Vanhanen
2 Occupational vibration Periodic motion of a body in alternate opposite directions from a position of restMathematical "vector quantity"= described by both a direction and a magnitudedirections of vibrationaccelerationPresent in most work settings where mechanical equipment is used
3 Measurements and standards ACGIH TLVs 19844 m/s2 < 8 hours a day6 m/s2 < 6 hours a day8 m/s2 < 2 hours a day12 m/s2 < 1 hour a dayISO 5349 (1986)Standard for measurements over frequencies from 5 to 1500 HzMitä laatua käytetään, millaiset tasot aih tautia, impact vibration (high impulsiveness) important!
4 Dose-response curves and threshold limits are not applicable to all tools are derived from chain-saw datado not take into account impulsiveness and high frequency of many tools
5 Directive 2002/44/EC….. on the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (vibration)...daily (8 h) exp. limit value m/s2daily exp. action limit value 2,5 m/s2
6 Prevalence of white finger symptoms In Finnish forest workers:40% in 19727% in 1980
7 HAV as occupational disease in Finland 1990-2002 ROD FIOH(3 yrs)
8 Occupations (FIOH 1990-2002) Chain saw work 22 Construction worker 17 Miners+ drillersMachine work,-repair, tool makersWeldersPipeworkRailroad or road work 4Stonework1-2 : dental technician, teacher, painter, manufacture of diff. devices, plastics worker etc.
9 Exposure Vibration level, acceleration, frequency, impulses Duration, continuityRadiation of the vibration (tool weight, grip strength, hand position, exposure area)TemperatureClothing
10 ExposureVibration level of a tool may be difficult to estimate without proper measurementsDuties to the manufacturers of tools and to employers on informing and measuring the levelsand on employee protection and information
11 Health surveillancePeriodic health examinations in occupational health unitsat 1-3 year intervals, depending on vibration levels and durationSymptomsClinical examinationIf symptoms, referral to FIOH, for example
12 Prevention Decrease exposure to minimum Stop smoking technical improvements of toolsminimum exposure timeclothing, gloves, temperature, pauses etc.Maintenance of knowledge on vibration levels of tools in use, especially new onesStop smokingPeriodic health examinations
13 Prevention Decrease exposure to minimum Temperature Stop smoking technical improvements of toolsminimum exposure timegloves etc.Maintenance of knowledge on vibration levels of new tools taken into useTemperatureStop smokingPeriodic health examinations