Environmental radiological studies downstream from the Rancho Seco Nuclear Power Generating Station, 1985

Technical Report · Thu Feb 06 04:00:00 EST 1986

DOI:https://doi.org/10.2172/5683150· OSTI ID:5683150

Noshkin, V E; Wong, K M; Eagle, R J; Brunk, J L; Jokela, T A

Information compiled in 1985 while assessing the environmental impact of radionuclides previously discharged with aqueous releases from the Rancho Seco Nuclear Power Generating Plant is presented. In October 1984, the quantities of gamma-emitting radionuclides in water discharged to Clay Creek from the plant were reduced below operationally defined detection limits for liquid effluents. However, radionuclides previously discharged persist in the downstream environment and are found in many aquatic dietary components. /sup 134/Cs and /sup 137/Cs are the primary gamma-emitting radionuclides detected in the edible flesh of different fish, crayfish, and frogs. Coefficients for exponential equations are generated, from a least square analysis, that relate the change in concentration of /sup 137/Cs in fish to distance downstream and time between March and October 1985. Concentrations of /sup 137/Cs in surface creek sediments also decreased in the downstream direction much in the same manner as concentrations decreased in fish. However, there was no significant difference in the radiocesium concentrations in surface sediements collected from comparable locations during both 1984 and 1985.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5683150
• Report Number(s): UCID-20641-Pt.1; ON: DE86011014
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220900 -- Nuclear Reactor Technology-- Reactor Safety
520300* -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- (1989)
54 ENVIRONMENTAL SCIENCES
560172 -- Radiation Effects-- Nuclide Kinetics & Toxicology-- Animals-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALI METAL ISOTOPES
AMPHIBIANS
ANIMALS
AQUATIC ECOSYSTEMS
AQUATIC ORGANISMS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM 134
CESIUM 137
CESIUM ISOTOPES
ECOLOGICAL CONCENTRATION
ECOSYSTEMS
ENRICHED URANIUM REACTORS
ENVIRONMENT
FISHES
FOOD CHAINS
HOURS LIVING RADIOISOTOPES
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
POWER REACTORS
PWR TYPE REACTORS
RADIOACTIVITY
RADIOECOLOGICAL CONCENTRATION
RADIOISOTOPES
RADIONUCLIDE KINETICS
RANCHO SECO-1 REACTOR
RANCHO SECO-2 REACTOR
REACTORS
RISK ASSESSMENT
TERRESTRIAL ECOSYSTEMS
VERTEBRATES
WATER COOLED REACTORS
WATER MODERATED REACTORS
YEARS LIVING RADIOISOTOPES