ISO/TC 108/SC 4/WG 3 - Hand-transmitted vibration

This document describes a coupling-force-dependent weighting of the r.m.s. value to the frequency-weighted acceleration, ahw. The procedure only applies to normal gripping situations (embracing a handle). If only part surfaces of the hand are exposed to vibration, the procedure is not applicable. The evaluation methods defined in this document are intended to enable research. This document provides guidance on an additional procedure to that defined in ISO 5349-1 for measuring and reporting hand-transmitted vibration exposures by taking into account the coupling force exerted on the vibrating surface. This document is intended to facilitate future research on hand-arm vibration risks and to complement data collected using the ISO 5349-1 methodology. This document does not apply as an alternative to ISO 5349-1. The data derived from this document does not apply to perform tasks in accordance with national regulations, guidelines or recommendations for workplace vibration or machinery vibration emissions. This document does not apply to the legal obligations related to the protection of workers from hand-arm vibration in the workplace and the declaration of vibration emissions from machinery. The methodology defined in this document is based only on biomechanical relationships between vibration transmission to the hand-arm system as a function of total forces. The influence of contact force and pressure on the surface of the hand remains unconsidered and requires further research.

This document describes the coupling parameters between the hands of a machine operator and a vibrating surface of the machine. The coupling between the hand and the vibrating surface can be described using different parameters and component parts of these parameters: — force parameters, such as push, pull and grip; — parameters such as pressure exerted on skin. In addition, Annexes A, B, C, D and E provide guidelines for measuring procedures, the measurement of the force and pressure parameters, and information on the requirements for measuring instrumentation, as well as a calibration method. This document does not deal with forces which act tangentially to the hand.

ISO/TR 18570:2017 provides guidance on a supplementary method to that defined in ISO 5349‑1 for measuring and reporting hand-transmitted vibration exposures. The method defined in this document provides an improved assessment methodology for evaluating vascular hand-arm vibration risks (vibration white finger). This document does not apply for other health effects (e.g. sensorineural and musculoskeletal disorders) induced from hand-transmitted vibration exposure (see ISO 5349‑1:2001, Annex Β). ISO/TR 18570:2017 is intended to facilitate future research on hand-arm vibration risks. It can be used to supplement the data given by the ISO 5349‑1 methodology. ISO/TR 18570:2017 cannot be used as an alternative to ISO 5349‑1. Data derived from this document cannot be used in place of ISO 5349‑1 data for fulfilling duties under national regulations, guidance or recommendations for either workplace vibration exposures or machinery vibration emissions. The methodology defined in this document is based on biomechanical and epidemiological studies which are reviewed in Annex A. Also provided in Annex A is tentative information on a relationship between vibration exposure and risk of developing vascular hand-arm vibration disorders.

ISO/TS 15694:2004 specifies methods for measuring single shocks at the handle(s) of hand-held and hand-guided machinery characterized by a maximum strike rate below 5 Hz. ISO/TS 15694:2004 also defines additional requirements for the measuring instrumentation which is necessary for the evaluation of shocks. The aim is to facilitate the gathering of emission and human exposure data in order to provide a basis for emission declaration and for the future development of exposure risk criteria. However, ISO/TS 15694:2004 does not provide methods for the interpretation of the potential human effects of single shocks. It is therefore a basis for measurement and evaluation of emission of single shocks from hand-held and hand-guided machinery but does not cover the evaluation of human exposure.

ISO 15230:2007 describes the coupling parameters between the hands of a machine operator and a vibrating surface of the machine. The coupling between the hand and the vibrating surface can be described using different parameters and component parts of these parameters: force parameters, such as push, pull and grip; parameters such as pressure exerted on skin. In addition, informative annexes provide guidelines for measuring procedures, the measurement of the force and pressure parameters, and information on the requirements for measuring instrumentation, as well as a calibration method. ISO 15230:2007 does not deal with forces which act tangentially to the hand.

Specifies a method for the laboratory measurement, the data analysis and reporting of the vibration transmissibility of gloves in terms of vibration transmission from a handle to the palm of the hand in the frequency range from 31,5 Hz to 1250 Hz.