Appendix A
ESTIMATED 3J0-YEAR INTEGRAL DOSE VS RATE
OF REMOBILIZATION FROM DOME
The total stock of transuranics present at any time in the
due to leaching from the dome can be estimated by assuming that:
rate of remobilization is proportional to the quantity of tra
remaining in the dome and the remobilized transuranics are r
by
tidal flushing from the lagoon with a turnover time t.
This problem
is mathematically analagous to a two-stage radioactive decay pravess
in which the increased standing stock in the lagoon is analagoug] to the
amount:‘cf the intermediate nuclide present.
If remobilization
Place with an effective half-life T, then the increased standi
4S is given by:
takes
stock
4S = TAC, etent/*|
{atk
where »4
= 0.693/T.
If it is assumed that the dose rate from marine foods is pr
ttional to the standing stock of transuranics in the lagoon (thi
effectively is the usual "concentration factor” assumption), th@n the
extra 30-year dose from 4S can be written as:
‘D39
«= DR
S 9
30
Sf
(AS)dt
OE
4D3q = TDCe (1797304) =e (2-930!)
SS
39