Author/Editor		Pirc-Ćurić, Emilija
Title		Poklicna izpostavljenost nizkim dozam ionizirajočih sevanj
Translated title		Occupational exposure to low level of radiation
Type		monografija
Place		Ljubljana
Publisher		Medicinska fakulteta
Publication year		2002
Volume		str. 59
Language		slo
Abstract		Standpoints: Ionising radiation is consisted by fragments or quanta of electromagnetic ripple which leave the atomic nucleus after the process of radioactive disintegration. They are alpha and beta fragments and gamma rays. Considering the type of rays which leave the nucleus we know alpha, beta and gamma radiation. Moreover, during nuclear reactions the nucleus can transmit neutrons, protons and fission splits. The most about the biological effects of the ionising radiation we learned from researches on survived people exposed to high doses during atomic bombings and accidents e.g. in Chernobyl. What a small dose is wasn't defined by experts, it was only pragmatically agreed. According to ICRP 60 the limited yearly effective dose, to which only occupationally exposed employees can be exposed, was decreased from 50 mSv to 20 mSv per year (since the year 1990). According to the Slovene law, the limit for occupational exposure is still 50 mSv (the law entered into force in 1986 and since there haven't been any changes or new regulations. In practice the limit is 20 mSv). Biological effects at small doses cannot be directly defined. They can only be estimated with effects' extrapolish at high doses. Characteristically for deterministic effects of the ionising radiation is their threshold yet they begin to appear only from a certain limited dose onwards. The level of damage depends on the dose and is an unavoidable consequence of the exposure to the radiation. Stochastic effects are mutagen, cancerous and are genetic effects, whose probability of commence depends on the dose of the ionising radiation. The threshold of the dose doesn't exist here. Radioactive material is categorised in group I of the list of cancerous material and energies of the International Organisation for the Researches of Cancer (Lyon: IARC 1997). (Abstract truncated at 2000 characters).
Descriptors		OCCUPATIONAL EXPOSURE RADIATION, IONIZING RADIATION EFFECTS RADIATION DOSAGE DOSE-RESPONSE RELATIONSHIP, RADIATION RADIATION PROTECTION HEALTH SURVEYS