Does any know if there are any updated interpretations of
the allowable workplace exposure for radon?
http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=INTERPRETATIONS&p_id=24496
The OSHA
radon exposure limit is an average concentration for 40 hours in any workweek
of 7 consecutive days. The still applicable 1971 radon-222 exposure limit for
adult employees is 1 x 10-7 microcuries per milliliter (µCi/ml) [100
picocuries/liter (pCi/L)] averaged over a 40-hour workweek. However, OSHA would
consider it a de minimis violation if an employer complied with the
current NRC radon-222 (with daughters present) exposure limit for adult
employees of 3x10-8 µCi/ml [30 pCi/L] averaged over a year
(DAC-derived air concentrations).
R. William Field, PHD, MS
Professor
Department of Occupational and Environmental Health
Department of Epidemiology
College of Public Health
N222 Oakdale Hall
University of Iowa
Iowa City, IA 52242
PH:319-335-4413
bill-field@uiowa.edu
RN PROF (subscription changes) - http://list.uiowa.edu/archives/radonprofessionals.html RN LEADERS - http://www.radonleaders.org/
From Name
Field, R W
From Address
bill-field@UIOWA.EDU