Bibliographic Citation
| Document |  394 K |
|---|---|
| DOI | 10.2172/5910721 |
| Title | Iodine-131 in irradiated fuel at time of processing from December 1944 through December 1947 |
| Creator/Author | Heeb, C.M. ; Morgan, L.G. |
| Publication Date | 1991 Mar 01 |
| OSTI Identifier | OSTI ID: 5910721; Legacy ID: DE91009780 |
| Report Number(s) | PNL-7253-HEDR |
| DOE Contract Number | AC06-76RL01830 |
| Other Number(s) | Other: ON: DE91009780 |
| Resource Type | Technical Report |
| Research Org | Pacific Northwest Lab., Richland, WA (USA) |
| Sponsoring Org | DOE; USDOE, Washington, DC (USA) |
| Subject | 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 54 ENVIRONMENTAL SCIENCES; HANFORD RESERVATION; SOURCE TERMS; IODINE 131; RADIATION DOSES; ACCURACY; BATTELLE PACIFIC NORTHWEST LABORATORIES; DISSOLUTION; ENVIRONMENTAL EXPOSURE PATHWAY; ENVIRONMENTAL IMPACTS; HISTORICAL ASPECTS; RADIATION PROTECTION; SPENT FUELS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DAYS LIVING RADIOISOTOPES; DOSES; ENERGY SOURCES; FUELS; INTERMEDIATE MASS NUCLEI; IODINE ISOTOPES; ISOTOPES; MATERIALS; NATIONAL ORGANIZATIONS; NUCLEAR FUELS; NUCLEI; ODD-EVEN NUCLEI; RADIOISOTOPES; REACTOR MATERIALS; US DOE; US ERDA; US ORGANIZATIONS |
| Description/Abstract | The purpose of this document is to provide a record of the iodine-131 releases that were used as source terms in calculating the Phase 1 air pathway doses. The following table provides estimates of monthly iodine-131 releases to the atmosphere from the irradiated fuel processing plants for the time period December 1944 (the first month of dissolution of irradiated fuel from the Hanford Site) through December 1947. The estimated values of iodine-131 contained in the irradiated fuel at the time of processing were calculated using the best available information. Details of the calculations, including the assumptions required to obtain the values and the inherent uncertainties in the values, will be addressed in a Phase 2 HEDR report. The quantity of iodine-131 is released to the atmosphere is obtained by multiplying the calculated iodine-131 content of the fuel being dissolved by a release fraction. The actual release fraction value is uncertain. The release fractions assumed for iodine-131 were based on values that are expected to bound the actual release of iodine-131. The Phase 1 dose estimates from iodine-131 were based on a most probable release factor of 75% with an upward uncertainty bound of 85% and a lower uncertainty bound of 50%. The values shown in the table were input to the Phase 1 Modular Dose Calculation Model, which provided the air pathway doses. 1 tab. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: ED; Size: Pages: (8 p) |
| Availability | OSTI; NTIS; INIS; GPO Dep. |
| System Entry Date | 2009 Mar 05 |
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