National Inst. of Radiological Sciences, Chiba (Japan)
Corporate Source:
(Code: 4485000)
Conference Title: 20. National Institute of Radiological Sciences seminar
on environmental research
Chiba
Conference Location:
(Japan)
Conference Date:
10-11 Dec
(201 p)
p 32-42
Publication Date: Mar 1993
CONF -921297-NIRS-M-93
Report Number(s):
Order Number: DE94707693
Document Type: Analytic of a Report; Conference Literature
Language:
Japanese
Journal Announcement:
Availability: OSTI;
\
:
EDB9404
NTIS;
INIS
Research Abstracts);
(Energy
JPN (Japan (sent to DOE from) )
ERA
Subfile:
Exchange) .
1992
ETD
(Energy Technology Data
US DOE Project/NonDOE Project: NP
Country of Origin: Japan
Country of Publication: Japan
Abstract: In Japan, systematic researches on marine environmental
radioactivity started in 1954 when ‘Bikini incidence’ occurred. After
several years of handling emergency situations, basic studies were
carried out to understand processes and mechanisms of contamination of
aquatic organisms by radionuclides. At this period ‘Hiyama Group’ hada
large contribution to the development of this new field of research.
Important concepts and items have already been dealt with in this Grant
Group. Toward the end of ’Hiyama Group’, a new project started in
Nuclear Safety Research Association. This project, so-called
’Kaihohtoku’, aimed at gathering necessary information for safety
assessment on the release of low-level radioactive liquid wastes from a
newly planned spent-fuel reprocessing plant at Tokai. NIRS-Nakaminato
Branch was established first as Marine Radioecological Station in this
project. The term 'radioecology’ got popularity also in this period.
Many important results were obtained and scientific basis of the safety
assessment was established in this project. Today we have not any
urgent matter to be handled concerning radioecology in our coastal
environment. Nuclides found are exclusively of fallout and of a quite
low level. We have also established methodology of radiological
assessment. So, what is the problem The problem is ‘from conservative
to realistic’, which is the trend in the world. Here, from this
viewpoint,
some topics such as models and parameters including
concentration factors and their validation and verification in the
natural environment were discussed.
Major Descriptors:
(author).
*AQUATIC ECOSYSTEMS -- RADIOECOLOGY
Descriptors: AQUATIC ORGANISMS; CONTAMINATION; FOOD CHAINS; LIQUID WASTES;
LOW-LEVEL RADIOACTIVE WASTES; NATURAL RADIOACTIVITY; RADIATION
PROTECTION; RADIONUCLIDE MIGRATION
Broader Terms: ECOLOGY; ECOSYSTEMS; ENVIRONMENTAL TRANSPORT; MASS TRANSFER;
MATERIALS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; RADIOACTIVITY;
~
WASTES
Subject Categories: 540330*
-- Environment, Aquatic -- Radioactive
Materials Monitoring & Transport -- (1990-)
INIS Subject Categories: B3210*
-- Water -- Radioactive
materials--monitoring & transport -- (1992-)
10/5/302
03605380
(Item 2 from file:
EDB-94-021346
103)
Title: Possible differences in biological availability of isotopes of
plutonium: Report of a workshop
Author(s) /Editor(s): Kercher, J.R.; Gallegos,
Corporate Source:
G.M.
(eds.)
Lawrence Livermore National Lab.,
CA
(United States)
(Code: 9513035)
Sponsoring Organization:
DOE
USDOE, Washington, DC (United States)
Conference Title: Workshop on possible differences in biological
availability of isotopes of Plutonium
Conference Location: Las Vegas, NV (United States)
Conference Date:
Aug 1990
Publication Date: Sep 1993
(56 p)
9903653
28-29