From 1994 to 1999, a team of scientists and engineers performed detailed dose reconstruction analyses focused on past releases of radioactive iodine, mercury, and polychlorinated biphenyls (PCBs) released from the U.S. government complexes on the Oak Ridge Reservation. Listed below are the tasks included in the Oak Ridge Dose Reconstruction. SENES Oak Ridge, Inc. was the principal investigator for Tasks 1 and 4.

Task 1: Iodine-131 Releases from X-10 Radioactive Lanthanum Processing

Task 2: Mercury Releases from Y-12 Lithium Enrichment

Task 3: Polychlorinated Biphenyls (PCBs) in the Environment near Oak Ridge

Task 4: Radionuclides Released from X-10 to the Clinch River via White Oak Creek

Task 5: Systematic Review of Historical Records of Oak Ridge Operations

Task 6: Review of Historical Uranium Effluent Monitoring Data

Task 7: Additional Screening Calculations for Materials Not Evaluated in Phase I


A complete report for each of the tasks can be obtained from the State of Tennessee web site.


Prototype of Individual Risk and Dose Calculator for the Oak Ridge Region (IRAD)
Interactive individual web-based calculation of risk and dose that considers the effect of combined exposures to I-131 in fallout and from releases from the 1944-1956 operation of RALA processing at Oak Ridge. To log on:

Click: http://198.144.166.5/irad