Appendix CRF - Part 3 - Northamptonshire County Council

8.3.7 Dose from inhaling material discharged from a dropped container is given by:
Dose
inh,
bag
I RF1
RF2
C B
D
DF
where I is the inventory of radionuclide Rn releasable (Bq)
RF1 is the release fraction (-)
RF2 is the respirable fraction (-)
C is the dispersion coefficient (s m -3 ).
B is the breathing rate (m 3 s -1 )
DF is the decontamination factor (-)
Dinh is the dose coefficient for inhalation of radionuclide,
Rn (Sv Bq -1 ).
Parameter Description Value Units
inventory of radionuclide in the bag 200E6 Bq
I inventory of radionuclide Rn
releasable
20E6 Bq
RF1 release fraction 1E-3 -
RF2 respirable fraction 0.1 -
C dispersion Worker 5
s m
coefficient Public 1.7E-2
-3
B breathing rate 3.3E-4 m 3 s -1
DF decontamination factor 1 -
Application for disposal of LLW including HV-VLLW under RSA 1993,
for the East Northants Resource Management Facility:
Supporting Information
Rn
inh
July 2009
63
WS010001/ENRMF/CONSAPPCRF 382