Author/Editor		Vaupotič, Janja
Title		Radon v Postojnski jami
Type		članek
Source		In: Glavič P, Brodnjak-Vončina D, editors. Zbornik referatov s posvetovanja Slovenski kemijski dnevi 2000: 1. in 2. del; 2000 sep 28-29; Maribor. Maribor: FKKT,
Publication year		2000
Volume		str. 674-9
Language		slo
Abstract		Due to the specific work regime in the Postojna Cave, which depends primarily on the daily number of visitors, and on seasonal variations in air radon concentrations, an optimal methodology for radon and progeny measurement and dose calculation was sought. The programme of measurement throughout the years was optimised, and now comprises three-month exposures of etched-track detectors, and twice a year, 8-10 day measurements using continuous monitors. Radon concentrations range from about 500 Bqm-3 in winter to about 5000 Bqm-3 in summer and equilibrium factors range from 0.42 to 0.69 in winter and from 0.33 to 0.86 in summer. Radiation doses from radon decay products for employees in the cave were calculated according to the ICRP 65 methodology and ranged from 0.02 to 8.40 mSv per year.
Descriptors		RADON OCCUPATIONAL EXPOSURE