Exposure – the most common error

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The most common error in the assessment of the exposure of workers to vibration is related to the assigned exposure times.

In the case of hand-arm must count the time when the worker is exposed to vibration; one should not count on a period in which a worker has landed the equipment or that is holding it without being in operation. The contact time is the time during which the hands are effectively exposed to vibration from the tool or workpiece. Often, This period is much lower than the ' working time ' and is usually overrated by operators. Read more

Evaluation of vibration in buildings – discomfort and integrity of structures

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The effects of vibrations in buildings and other structures, can be multiple, but are the highlight, as most important, the effects on people and in the integrity of the structures. In order to respond to the needs that regularly appear on the characterization of this type of situations, the dBwave, Since last year, is accredited by IPAC, to perform the following tests: Read more

Industrial ship noise reduction – case study

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It is still common to occur, under pressure of circumstances and with some ignorance of current capabilities of the acoustical engineering, the implementation of massive investments, made more or less loose, noise reduction measures. For more at least loose we refer to investments based on "ouvidómetro", almost to divination and without a strong technical justification. Some times, almost by luck, the result of these investments is good, but sometimes it's not, this approach is not compatible with the requirements of management today, where is norma a detailed justification for each euro invested. Read more