Noise and Vibration Exposure

Check that level of daily noise exposure of personnel in the workplace complies with relevant standards and regulations, and improve hearing comfort.

Tests objectives :

• Measure daily exposure of employees to noise at their individual workstations in relation to the regulations in force
• Predict noise levels of production sites by means of calculations
• Study hearing protectors
• Analyze measurements with regard to health and safety at work regulations
• Check conformity of new and improved workstations

Tests facilities :

• Noise exposure meters, portable noise dosimeters, sound level meters and sound calibrators
• Software dedicated to noise measurements at the workplace
• Data acquisition systems for architectural measurements
• Software used for predictive measurements of noise levels in workshops
• Acoustic test chamber
• Data acquisition software for subjective study (CNRS/INRS)
• Software: dBTrait, dBWed, dBLEXD

Accreditations :

ISO/IEC 17025 awarded by COFRAC

Testing norms :

EN ISO 9612- Acoustics – Determination of occupational noise exposure – Engineering method

EN ISO 4869-2- Hearing protectors – Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn

Labour Code applicable-

Order of 11 December 2015-

Checking the compliance of the exposure of works vehicle operators and train drivers to vibrations propagated throughout the whole of their bodies.

Tests objectives :

• Assess vibrations transmitted through the seat or feet of employees who use mobile machines or other work vehicles
• Measure vibration exposure experienced by employees at their individual workstations
• Compare the degree of exposure with the statutory limits
• Check that exposure level is below the regulatory threshold
• Validate workstation improvements

Tests facilities :

• Tri-axial accelerometers
• Multi-channel data acquisition device (LMS Scadas or 01dB NetdB)
• Chair seat pads used with tri-axial accelerometers (that can be placed under the seat)
• Vibrometry equipment

Testing norms :

EN 14253-Mechanical vibration – Measurement and calculation of occupational exposure to whole-body vibration with reference to health – Practical guidance

ISO 2631-1 & -5- Mechanical vibration and shock – Evaluation of human exposure to whole-body vibration – Part 1: General requirements – Part 5: Method for evaluation of vibration containing multiple shocks

Labour Code applicable-

Checking the compliance of the vibrations transmitted into the palms, fingers and arms of employees when handling power tools.

Tests objectives :

• Measure worker exposure to handtransmitted vibrations in the workplace – primarily for track maintenance and rolling stock staff
• Compare the degree of exposure with the statutory limits
• Validate workstation improvements

Tests facilities :

• Regular and tri-axial accelerometers
• Multi-channel data acquisition device

Testing norms :

EN ISO 5349-2- Mechanical vibration – Measurement and evaluation of human exposure to hand-transmitted vibration — Part 2: Practical guidance for measurement at the workplace

ISO 2631-1- Mechanical vibration and shock – Evaluation of human exposure to whole-body vibration – Part 1: General requirements

Labour Code applicable