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Environmental assessment for the relocation and storage of isotopic heat sources, Hanford Site, Richland, Washington
| 题名： | Environmental assessment for the relocation and storage of isotopic heat sources, Hanford Site, Richland, Washington |
| 关键词： | 07 ISOTOPE AND RADIATION SOURCE TECHNOLOGY ;05 NUCLEAR FUELS; RADIOACTIVE WASTE STORAGE; RADIOISOTOPE HEAT SOURCES; HANFORD RESERVATION; ENVIRONMENTAL IMPACTS; NUMERICAL DATA; ALPHA-BEARING WASTES |
| 摘要： | As part of a bilateral agreement between the Federal Minister for Research and Technology of the Federal Republic of Germany (FRG) and the DOE, Pacific Northwest National Laboratory (PNNL) developed processes for the treatment and immobilization of high-level radioactive waste. One element of this bilateral agreement was the production of sealed isotopic heat sources. During the mid-1980s, 30 sealed isotopic heat sources were manufactured. The sources contain a total of approximately 8.3 million curies consisting predominantly of cesium-137 and strontium-90 with trace amounts of transuranic contamination. Currently, the sources are stored in A-Cell of the 324 Building. Intense radiation fields from the sources are causing the cell windows and equipment to deteriorate. Originally, it was not intended to store the isotopic heat sources for this length of time in A-cell. The 34 isotopic heat sources are classified as remote handled transuranic wastes. Thirty-one of the isotopic heat sources are sealed, and seals on the three remaining isotopic heat sources have not been verified. However, a decision has been made to place the remaining three isotopic heat sources in the CASTOR cask(s). The Washington State Department of Health (WDOH) has concurred that isotopic heat sources with verified seals or those placed into CASTOR cask(s) can be considered sealed (no potential to emit radioactive air emissions) and are exempt from WAC Chapter 246-247, Radiation Protection-Air Emissions. |
| 总页数： | 79p |
| 报告类型： | 科技报告 |
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