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Title: Decline of radionuclides in Columbia River biota

In January 1971, the last of nine plutonium production reactors using direct discharge of once-through cooling waters into the Columbia River was closed. Sampling was initiated at three stations on the Columbia River to document the decline of the radionuclide body burdens in the biota of the Columbia River ecosystem. The data show that in a river-reservoir complex, the measurable body burden of fission-produced radionuclides decreased to essentially undetectable levels within 18 to 24 mo after cessation of discharge of once-through cooling water into the river. On the basis of data from the free-flowing station, we believe that this decrease would be even more rapid in an unimpounded river.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
5664491
Report Number(s):
PNL-3269
TRN: 80-006789
DOE Contract Number:
EY-76-C-06-1830
Resource Type:
Technical Report
Research Org:
Battelle Pacific Northwest Labs., Richland, WA (USA)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; COLUMBIA RIVER; AQUATIC ORGANISMS; RADIOISOTOPES; RADIOECOLOGICAL CONCENTRATION; AQUATIC ECOSYSTEMS; BODY BURDEN; CESIUM 137; COBALT 60; CONTAMINATION; HANFORD RESERVATION; MANGANESE 54; RADIONUCLIDE MIGRATION; SCANDIUM 46; ZINC 65; ALKALI METAL ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CESIUM ISOTOPES; COBALT ISOTOPES; DAYS LIVING RADIOISOTOPES; ECOLOGICAL CONCENTRATION; ECOSYSTEMS; ELECTRON CAPTURE RADIOISOTOPES; ENVIRONMENTAL TRANSPORT; EVEN-ODD NUCLEI; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MANGANESE ISOTOPES; MASS TRANSFER; MINUTES LIVING RADIOISOTOPES; NATIONAL ORGANIZATIONS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; RIVERS; SCANDIUM ISOTOPES; SECONDS LIVING RADIOISOTOPES; STREAMS; SURFACE WATERS; US DOE; US ERDA; US ORGANIZATIONS; YEARS LIVING RADIOISOTOPES; ZINC ISOTOPES 520302* -- Environment, Aquatic-- Radioactive Materials Monitoring & Transport-- Aquatic Ecosystems & Food Chains-- (-1987)