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Title: AIR AND RADON PATHWAY MODELING FOR THE F AREA TANK FARM

An air and radon pathways analysis was conducted for the F-Area Tank Farm (FTF) to estimate the flux of volatile radionuclides and radon at the ground surface due to residual waste remaining in the tanks following closure. This analysis was used as the basis to estimate the dose to the maximally exposed individual (MEI) for the air pathway per Curie (Ci) of each radionuclide remaining in the combined FTF waste tanks. For the air pathway analysis, several gaseous radionuclides were considered. These included carbon-14 (C-14), chlorine-36 (Cl-36), iodine-129 (I-129), selenium-79 (Se-79), antimony-125 (Sb-125), tin-126 (Sn-126), tritium (H-3), and technetium-99 (Tc-99). The dose to the MEI was estimated at the SRS Boundary during the 100 year institutional control period. For the 10,000 year post closure compliance period, the dose to the MEI was estimated at the 100 m compliance point. Additionally, the dose to the MEI was estimated at a seepage outcrop located 1600 m from the facility. For the radon pathway analysis, five parent radionuclides and their progeny were analyzed. These parent radionuclides included uranium-238 (U-238), plutonium-238 (Pu-238), uranium-234 (U-234), thorium-230 (Th-230), and radium-226 (Ra-226). The peak flux of radon-222 due to each parent radionuclide was estimated for the simulationmore » period of 10,100 years.« less
Authors:
;
Publication Date:
OSTI Identifier:
986576
Report Number(s):
WSRC-STI-2007-00355-REV1
TRN: US201018%%339
DOE Contract Number:
DE-AC09-08SR22470
Resource Type:
Technical Report
Research Org:
SRS
Sponsoring Org:
DOE
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS; ANTIMONY 125; CARBON 14; CHLORINE 36; IODINE 129; PLUTONIUM 238; PROGENY; RADIOISOTOPES; RADIUM 226; RADON; RADON 222; SELENIUM 79; STORAGE FACILITIES; TANKS; TECHNETIUM 99; THORIUM 230; TIN 126; TRITIUM; URANIUM 234; URANIUM 238; WASTES