What's New?
.	Fukushima Decontamination Report
.	CRCPD & CDC Grants for Volunteer Corps
.	America's Nuclear Future
.	February Newsletter
.	Boice Nominated President of NCRP
.	February Journal
.	February ORS
.	Schauer Given the Butterfly Award from Image Gently
.	Kase President's Report to IRPA
.	IRPA13 Accepting Posters

Upcoming Events
.	HPS Midyear - Issues in Waste Management 5-8 February 2012 Dallas, Texas
.	NRC Regulatory Information Conference NRC Regulatory Information Conference 13-15 March 2012 Rockville, Maryland
.	NCRP Annual Meeting 12-13 March 2012 Washington, DC
.	James E. Turner Memorial Symposium Call for Abstracts 18-19 April 2012 Oak Ridge Associated Universities, Pollard Auditorium, Oak Ridge, Tennessee
.	IRPA13 13-18 May 2012 Glasgow, Scotland
.	Canadian Radiation Protection Association (CRPA) Annual Meeting 27-30 May 2012 Halifax, Nova Scotia
.	ACS Undergrad Summer Schools 10 June- 20 July 2012
.	Nuclear Regulatory Commission Meeting Webcasts February 2012 Bethesda, Maryland

09 February 2012

Derived air concentration (DAC)

The concentration of radioactive material in air that will result in an annual limit of intake if an individual breathes that air for a year. For a radiation worker, it is assumed air is breathed for 2,000 hours in one year in the workplace.