ISO 5349-3:2025 PDF

Mechanical vibration — Measurement and evaluation of human exposure to hand-transmitted vibration — Part 3: Isolated and repeated shocks using the frequency range of ISO 5349-1

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Title (English):

ISO 5349-3:2025

Mechanical vibration — Measurement and evaluation of human exposure to hand-transmitted vibration — Part 3: Isolated and repeated shocks using the frequency range of ISO 5349-1

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 20
Publication date:: December 12, 2025
Edition:: ISO IS 5349 edition 1 version 1
ICS:: 13.160

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Description (English):

This document specifies the general requirements for the measurement and evaluation of human exposure to hand-transmitted shock vibrations. For the purposes of this document, hand-transmitted shock vibration is any impactive or impulsive vibration that the machine or tool produces as a sequence of single events (isolated shock vibrations) linked by periods of no, or lower vibration. This document specifies parameters for the evaluation of machinery emissions of hand-transmitted shocks in the frequency range covered by ISO 5349-1 (nominally the frequency range covered by the octave bands from 8 Hz to 1 000 Hz). NOTE It is recognised that shock vibration often includes substantial high-frequency vibration energy. Therefore, reporting of information on hand-transmitted shock at higher frequencies that those specified in this document can be valuable.

Technical details

Technical committee: ISO/TC 108/SC 4 - Human exposure to mechanical vibration and shock
SKU: ISO 5349-3:2025

Abstract

Overview

ISO 5349-3:2025 - Mechanical vibration - Measurement and evaluation of human exposure to hand-transmitted vibration (HTV) - Part 3: focuses on isolated and repeated hand-transmitted shock (HTS) using the frequency range of ISO 5349-1 (nominally octave bands from 8 Hz to 1 000 Hz). The standard specifies general requirements, measurement procedures and metrics for evaluating shock-type vibrations produced by hand-held, hand-guided or hand-fed machinery. It complements ISO 5349-1 and ISO 5349-2 and references instrumentation requirements in ISO 8041-1.

Key topics and technical requirements

Scope and definitions: Defines isolated, repeated and continuous shock vibrations and related terms (e.g., shock, HTS, repetition rate).
Frequency range and weighting: Primary evaluation uses the frequency range covered by ISO 5349-1 with a flat frequency weighting component of the W weighting; the standard recognises that HTS often has higher-frequency content and recommends reporting higher-frequency data where useful.
Measurement parameters:
- Vibration Peak Magnitude (VPM) - a metric representing the mean of peak acceleration amplitudes for HTS events.
- Repetition rate (R) and mean repetition rate for periodically repeated shocks.
- Triaxial measurements and computation of instantaneous total acceleration values (x, y, z).
- Sampling, measurement period and transducer coupling - guidance on sensor location, orientation and data acquisition to ensure repeatability and comparability.
Instrumentation and uncertainty: Instruments conforming to ISO 8041-1 are recommended; references to uncertainty guidance (GUM) are included.
Reporting and test reports: Standard specifies required information for emission data, measurement conditions and parameters to support regulatory and research use.

Practical applications and users

ISO 5349-3:2025 is intended for:

Machine and tool manufacturers - to evaluate and reduce HTS emissions and to comply with emerging regulatory requirements (for example, EU machinery safety rules requiring mean peak acceleration reporting).
Occupational health and safety professionals - to assess worker exposure to shock vibration and to design control/mitigation measures.
Test laboratories and instrument manufacturers - to standardize measurement methods, sampling and reporting.
Researchers studying health effects of repeated and isolated shocks and developing exposure-response relationships.

Typical equipment covered: nail guns, road breakers, grinders, saws and other hand-held tools that produce percussive or impulsive vibration.

Related standards

ISO 5349-1: Measurement and evaluation - general requirements (basis for HTV risk estimates)
ISO 5349-2: Practical workplace measurement guidance
ISO 8041-1: Instrumentation for vibration measurement
ISO/IEC Guide 98-3 (GUM): Uncertainty of measurement

Keywords: ISO 5349-3:2025, hand-transmitted shock, HTS, hand-transmitted vibration measurement, VPM, flat frequency weighting, 8–1000 Hz, ISO 5349-1, ISO 8041-1.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and technical requirements

Scope and definitions: Defines isolated, repeated and continuous shock vibrations and related terms (e.g., shock, HTS, repetition rate).
Frequency range and weighting: Primary evaluation uses the frequency range covered by ISO 5349-1 with a flat frequency weighting component of the W weighting; the standard recognises that HTS often has higher-frequency content and recommends reporting higher-frequency data where useful.
Measurement parameters:
- Vibration Peak Magnitude (VPM) - a metric representing the mean of peak acceleration amplitudes for HTS events.
- Repetition rate (R) and mean repetition rate for periodically repeated shocks.
- Triaxial measurements and computation of instantaneous total acceleration values (x, y, z).
- Sampling, measurement period and transducer coupling - guidance on sensor location, orientation and data acquisition to ensure repeatability and comparability.
Instrumentation and uncertainty: Instruments conforming to ISO 8041-1 are recommended; references to uncertainty guidance (GUM) are included.
Reporting and test reports: Standard specifies required information for emission data, measurement conditions and parameters to support regulatory and research use.

Practical applications and users

ISO 5349-3:2025 is intended for:

Machine and tool manufacturers - to evaluate and reduce HTS emissions and to comply with emerging regulatory requirements (for example, EU machinery safety rules requiring mean peak acceleration reporting).
Occupational health and safety professionals - to assess worker exposure to shock vibration and to design control/mitigation measures.
Test laboratories and instrument manufacturers - to standardize measurement methods, sampling and reporting.
Researchers studying health effects of repeated and isolated shocks and developing exposure-response relationships.

Typical equipment covered: nail guns, road breakers, grinders, saws and other hand-held tools that produce percussive or impulsive vibration.

Related standards

ISO 5349-1: Measurement and evaluation - general requirements (basis for HTV risk estimates)
ISO 5349-2: Practical workplace measurement guidance
ISO 8041-1: Instrumentation for vibration measurement
ISO/IEC Guide 98-3 (GUM): Uncertainty of measurement

Keywords: ISO 5349-3:2025, hand-transmitted shock, HTS, hand-transmitted vibration measurement, VPM, flat frequency weighting, 8–1000 Hz, ISO 5349-1, ISO 8041-1.

ISO 5349-3:2025 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Practical applications and users

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Practical applications and users

Related standards

Related standards

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