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Identification and consequences of the BNFL source term in the near-field transfer of radionuclides (COMPLETED 3/93) - AE0108
Further describe the physical and chemical nature of the
BNFL effluent from Sellafield and investigate the influence
that particulate matter has on the pattern and rate of
dispersion of radio nuclides.
Key customer purpose:-
Provide essential input to the MAFF predictive model on the
dispersal of radioactive matter and thus enable MAFF to base
its authorisation of radioactive discharges from Sellafield
on a sound scientific understanding.
1. To determine the presence, if at all, of new solid phases
which are formed, e.g. iron flocs, and describe their
environmental pathways and stability.
2. To evaluate the importance of iron-manganese coatings to
sediments near Sellafield as possible products of changes
which occur at the outfall.
3. Following a comprehensive evaluation of the composition
of the effluent today, when radio nuclide releases are low
compared to the past, to determine whether or not specific
materials can be found, then to search for them in
historical samples and trace their environmental pathways.
4. The role of biota in sequestering solid phases will be
considered in order to determine the influence of
productivity on retention of radionuclides and transfer to
5. Suspended particulate debris, and the association of
radionuclides in marine biota will be determined in order to
identify the presence of phases (e.g. solids) derived from
the effluent, before or after it enters the sea. The
objective is to identify any biological related transfer
Time-Scale and Cost
Contractor / Funded Organisations
Phoenix Research Laboratory
Fields of Study
Environmental Protection - Marine