Sediment Concetrations of Radionuclides Released by Calvert Cliffs Nuclear PowerPlant. Volume 2: Appendices

摘要

Operation of the Calvert Cliffs Nuclear Power Plant (CCNPP) generates gaseous andliquid radioactive wastes that are ultimately discharged to the atmosphere and Chesapeake Bay. While atmospheric releases are chiefly radioactive noble gases with little environmental significance, aqueous discharges to Chesapeake Bay contain radionuclides that can be accumulated by aquatic and estuarine biota or become associated with sediments. Sediments potentially serve as a sink for selected radionuclides. This accumulation in the sediments could increase the availability of these radionuclides. This accumulation in the sediments could increase the availability of these radionuclides to aquatic biota and through food chain transport to a radiation dose to man. Development of mass balance for individual radionuclides allows an estimation of their increased bioavailability. The Maryland Power Plant Research Program (PPRP) collects and analyzes various environmental samples in order to assess the radioecological impact of CCNPP. PPRP has conducted a quarterly sediment monitoring program to determine the actual level of impact within the ecosystem components since 1975. This report describes the development and application of a sediment inventory of radionuclides released by the CCNPP and accumulated in Chesapeake Bay sediments.