N2 - The hazard assessment of ultrasonic noise impact on human body at workplaces presents an open problem; it is not satisfactorily solved comparing the fund of knowledge and standard regulations established for the case of audible noise. Some research carried on in the Central Institute of Labour Protection - National Research Institute, Poland, are essential for elaboration reliable procedures for the assessment of ultrasonic noise hazard and they have to bring to modernization and creation the corresponding standards in this field. In the presentation, some problems related to measurement procedures applied as well as to the interpretation of results essential for hazard assessment of ultrasonic noise impact on human body will be considered; in particular such cases where some procedures elaborated for audible noise assessment are being transferred to apply in the ultrasonic range without taking fully into account some specific aspects of the high frequency components of the noise. L1 - http://www.czasopisma.pan.pl/Content/101524/PDF/13-paper.pdf L2 - http://www.czasopisma.pan.pl/Content/101524 PY - 2013 IS - No 2 EP - 252 DO - 10.2478/aoa-2013-0029 KW - ultrasonic noise hazard assessment KW - maximal acoustic level values distribution KW - technologicalultrasonic devices A1 - Śliwiński, Antoni PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics VL - vol. 38 DA - 2013 T1 - Assessment of Ultrasonic Noise Hazard in Workplaces Environment SP - 243 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/101524 T2 - Archives of Acoustics