[ RadSafe ] New Background

[roseb at gdls.com]

Luke:

This message is in response to your post of 04/06/2010, 03:35 PM, to the 
RadSafe list.

I had to update a  worker training a couple of days ago to reflect the 
NCRP report no. 160 (2009) revised collective effective doses to the US 
population.  As I do not yet have a copy of the I used the following 
sources to update the slides.

1. "Medical radiation exposure of the U.S. population greatly increased 
since the early 1980s."  NRRPT News; Spring 2009 edition. [Online]  
http://www.nrrpt.org/file/Spring2009.pdf (April 7, 2010)

There is a nice graphic of new contribution percentages on p. 6 (pdf p. 
6/24).

2. "People exposed to more radiation from medical exams." HPS Media Center 
Document.. Health Physics Society; March, 2009. [Online] 
http://hps.org/media/documents/NCRP_Report-People_Exposed_to_More_Radiation_from_Medical_Exams_9Mar.pdf 
(April 7, 2020)

This document concisely states in the Q & A section (pdf p. 2/10) that the 
average dose per person has been revised from 3.6 mSv (360 mrem) to 6.3 
mSv (630 mrem).

3. NCRP Report No. 160 Pie Charts.  National Council on Radiation 
Protection & Measurements; 2010.  [Online] 
http://www.ncrponline.org/Publications/160_Pie_charts.html

This NCRP wepage has the charts and dose values from the NCRP Report no. 
160.

4. "Fact sheet: biological effects of radiation." U.S. Nuclear Regulatory 
Commission; December, 2004. [Online] 
http://www.nrc.gov/reading-rm/doc-collections/fact-sheets/bio-effects-radiation.pdf 
(April 7, 2010)

This document has a nice graphic of the previous average dose contribution 
percentages (NCRP, 1987) on p. 2 (pdf p. 2/4).

Using the above references,  you can fairly quickly determine the average 
dose contribution, in mSv or mrem, from each source of radiation (i.e. 
radon, industrial, etc.) and prepare your own tables or charts for your 
organization's training manual.

Henry

Boyd H. Rose, CM, CIH, CHMM
Sr. Safety and Environmental Engineering Specialist
Corporate Radiation Safety Officer
General Dynamics Land Systems
38500 Mound Road
Mail Zone 436-10-75
Sterling Heights , MI 48310-3269
Tel: 586 825 4503
Fax: 586 825 4015
E-mail: roseb at gdls.com




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