CEN/TR 15172-1:2005

Foreword
Introduction
1 Scope
2 Identification of main sources and operational modes
   producing vibration that might be hazardous to health
   2.1 Identification of main sources and operational modes
   2.2 Factors that can combine with vibration to increase
        the likelihood of injury
3 Reduction of vibration at source
   3.1 Travelling on uneven surfaces
   3.2 Operating of working equipment (tools)
   3.3 Information from the manufacturer on the use of
        tools and accessories
   3.4 Vibrating tools mounted to the machinery
   3.5 Engine
4 Reduction of transmission of vibration from source
   to the operator
   4.1 General
   4.2 Wheel size and tyres
   4.3 Low-frequency wheel and chassis suspension
   4.4 Low-frequency cab suspension
   4.5 Seat suspension and seat design
5 Elimination of incorrect posture
   5.1 General
   5.2 Improving external cab visibility
   5.3 Design of cab adapted to the operator dimension
        and task
   5.4 Selection of seats adapted to the machine and task
6 Summary of questions to be considered when evaluating
   the design of mobile machinery in view of protecting
   operator's safety and health
   6.1 General
   6.2 Visibility
   6.3 Cabin construction
   6.4 Selection of seat
Annex A (informative) Vibration isolation
Bibliography

This Technical Report provides best practices and methods available for limiting the effects of mechanical whole-body vibration on operators' positions. The guidelines given outline practical ways in which whole-body vibration hazards associated with mobile machinery can be reduced by machinery design. The Technical Report covers four important aspects of the reduction of the effects arising from exposure to hazardous machinery vibration:a)identification of main sources and operational modes producing vibration that might be hazardous to health and of additional factors worsening the adverse health effects of vibration on the operators;b)reduction of vibration magnitudes at source;c)reduction of transmission of vibration from source to the operator;d)ergonomic adaptation of operators' position: posture, range of vision.This Technical Report does not provide universal or detailed technical solutions but only a review of engineering methods available. It is not concerned with hand-arm vibration which is covered by CR 1030-1.This Technical Report is primarily intended as a guideline for people involved in purchasing, using, supplying, marketing or inspecting mobile machinery. It is also intended to be a guidance for writers of type C standards for specific types of machinery.