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ŠUMARSKI LIST 7-8/2005 str. 26     <-- 26 -->        PDF

D. Horvat, A. Kos, Ž-. Zečić, M. Šušnjar, I. Bešlić: ISTRAŽIVANJE KONCENTRACIJE DRVNE PRAŠINE . Šumarski list br. 7–8, CXXIX (2005), 393-396
malno dopuštene vrijednosti za tvrde vrste drva, ovim
istraživanjem nije moguće otkloniti dilemu o štetnosti
izlaganja šumskih sjekača drvnoj prašini. Zadovoljavajući
bi bili jedino rezultati mjerenja koji pokazuju da
lebdećih drvnih čestica u radnoj atmosferi sjekača uopće
nema. Razlog tomu su tvrdnje stručnjaka medicine
rada da granična vrijednosti bilo koje kancerogene i/ili
mutagene tvari ne osigurava od neobolijevanja, nego
samo daje smjernice za poduzimanje mjera zaštite.


LITERATURA
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– Healt, Safety and Environment, IARC, France.
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Kos, A., 2004: Lebdeće čestice na radnom mjestu u
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Daljnjim je planom pokusa predviđeno istraživanje zaprašenosti
radne okoline radnika sjekača pri sječi i izradbi,
u područjima Hrvatske s karakterističnim načinima
gospodarenja prirodno obnavljanih šuma. Temeljni
je cilj definiranje onih uvjeta rada kada i gdje je
povećana izloženost drvnim ledbećim česticama iz
radne atmosfere, pa se trebaju poduzeti aktivnosti smanjenja
rizika od obolijevanja primjenom sredstva osobne
zaštite – respiratora i uređaja za disanje.


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Prijedlog Pravilnika o maksimalno dopustivim koncentracijama
štetnih tvari u atmosferi radnih
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Godišnje izvješće 2001. Hrvatske šume, Zagreb, 2002.
Councile directive 1999/38/EC of 29 April 1999 amending
for the second time Directive 90/394/EEC
on the protection of workers from the risk related
to exposure to carcinogens at work and extending
it to mutagens. Official Journal L 138,
01/06/1999 P 0066-0069.
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SUMMARY: This paper shows the daily portion of forest cutters’ exposure to total dust or respirable
fraction of oakwood during cutting and processing of fuelwood. The separators of non-respirable
particle fraction (cyclons) operate in a way similar to the separation of respirable particles in
the respiratory system of a healthy adult, with a medium efficiency (50 %) of 5 µm aerodynamic
diameter. The mean value of mass concentration of total oak dust was 1.562 ± 0.163 mg/m3 and respirable
fraction 0.618 ± 0.223 mg/m3. As the Rules, which classify oak dust as one of carcinogens, is
soon to be passed in Croatia, the significance of the results lies in the fact that none of the measured
values (N = 8) exceeds the Croatian limit values for mass concentration of hardwood dust recommended
for the workplace. However, some dilemmas remain because of the claims of occupational
medical experts that any limit value of any carcinogenic substance is not the guarantee against the
illness but rather the guideline for providing an adequate level of protection.


Key words: oakwood, wood dust, mass concentration, cutter, working environment, fuel wood.