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Aktualne wymagania stosowane przy pracach związanych z narażeniem na pole elektromagnetyczne

100%

Jaworski M.

Elektro Info

2018

tom nr 3

82--86

W artykule przedstawiono podstawowe wielkości charakteryzujące pole elektromagnetyczne w przestrzeni pracy, wyjaśniono znaczenie pojęć związanych z narażeniem na pole elektromagnetyczne, scharakteryzowano bezpośrednie i pośrednie skutki oddziaływania pola-EM na organizm ludzki i inne obiekty oraz wyjaśniono pojęcia limitów narażenia na pole-EM. Dodatkowo przedstawiono podstawowe źródła pola-EM, przy których istnieje konieczność rozpoznania poziomów narażenia na pole-EM oraz określono podstawowe obowiązki pracodawcy zatrudniającego osoby narażone na działanie pola elektromagnetycznego.

The article presents the basic values characterizing the electromagnetic field in the workspace and explains the meaning of concepts related to electromagnetic field exposure. The article describes also the direct and indirect effects of EMF field on the human body and other objects and explains the concepts of EM exposure limits. In addition, the basic EM-field sources are presented, where it is necessary to recognize EM exposure levels and define the basic obligations of the employer who is responsible for people exposed to the electromagnetic field.

Bacterial and fungal aerosols in indoor environment in Central and Eastern European countries

100%

Gorny R. L. , Dutkiewicz J.

Annals of Agricultural and Environmental Medicine

2002

tom 09

nr 1

Influence on operator's health of hand-transmitted vibrations from handles of a single-axle tractor

100%

Goglia V. , Gospodaric Z. , Filipovic D. , Djukic I.

Annals of Agricultural and Environmental Medicine

2006

tom 13

nr 1

The operators of the single-axle tractors are especially exposed to hand-arm transmitted vibrations. These vibrations can cause the complex of vascular, neurological and musculoskeletal disorders, collectively named hand-arm vibration syndrome. Among these, the most common disorder is vibration-induced white finger (Raynaud's phenomenon). The vibration levels were measured in three tractor's working conditions, namely idling, transportation and soil tillage. The vibration level on the handles was measured and analysed and the frequency spectra for the chosen working conditions were obtained. The frequency-weighted acceleration, given in m/s², was calculated and the obtained values are graphically presented. The measured vibration levels are then discussed with regard to the operator's daily exposure limits recommended by the ISO 5349. The vibration levels were much higher in the x and y directions than the zdirection in all working conditions. The vibration total values in idling, transportation and soil tillage were 3.37, 8.37 and 9.62 m/s², respectively. Results showed that the 10% of workers are exposed to a risk of vibration-induced white finger disorder of the hands after relatively short periods (3–4 years), if the tractor is used 8 hour per day in soil tillage and transportation at full load. Considering the criteria of the ISO 5349, the daily working time with the single-axle tractor should be limited in order to protect the operator and work schedules should be arranged to include vibration-free periods.