Radiological characterization of neutron-activated metal wastes from nuclear power stations
| Autor: | C.W. Thomas, N.L. Wynhoff, D.E. Robertson, D. L. Haggard |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Nuclear fuel
Chemistry Health Toxicology and Mutagenesis Nuclear engineering Control rod Pressurized water reactor Radiochemistry Public Health Environmental and Occupational Health Pollution Spent nuclear fuel Analytical Chemistry law.invention Nuclear Energy and Engineering Nuclear reactor core law Boiling water reactor Radiology Nuclear Medicine and imaging Neutron Spectroscopy Neutron activation |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry Articles. 161:585-595 |
| ISSN: | 1588-2780 0236-5731 |
| DOI: | 10.1007/bf02040505 |
| Popis: | Three different methods for determining the long-lived radionuclide contents of highly neutron activated metal wastes are being compared and assessed using samples of pressurized-water reactor (PWR) and boiling-water reactor (BWR) spent fuel disassembly hardware and control rods. These methods include: 1) empirical analyses involving sampling and laboratory measurements; 2) direct assay techniques; 3) calculation methods. These techniques are discussed and the results of the comparisons made to date are presented. The agreement between empirical versus calculational methods for the disassembly hardware was generally within 10% to 50%, and rarely exceeded a factor of 2.5, especially near the fueled region of the reactor core. However, large discrepancies between the measured versus calculated concentrations were observed for59Ni and63Ni at the end fittings of the fuel assembly hardware, where the calculations underestimated the concentrations by factors varying from about 8 to 28. The calculation errors are believed to be due to inadequate cross section data for the nickel isotopes. |
| Databáze: | OpenAIRE |
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