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Flag Name
IACC
ITRAIN
IUOPT
REGCHECK
Flag Description
Setting this flag to 2 directs the code to work
through all exposure pathways associated with
atmospheric dispersal of package contents
during an accident. The alternative value of
IACC = 1 denotes non-dispersal and is no
longer used in RADTRAN
This flag, used only for rail mode, denotes
whether shipment is by general freight (ITRAIN
= 1) or by dedicated rail (ITRAIN = 2).
This flag is used to select a building shielding
option. For the STANDARD value, persons in
rural buildings are not shielded (100%
exposure), persons in suburban dwellings are
87% exposed, and persons in urban dwellings
are 18% exposed. Setting the IUOPT flag to 1 is
equivalent to full shielding (everyone indoors is
fully shielded and receives no dose). Setting the
IUOPT flag to 3 is equivalent to no shielding
(being indoors provides no protection and is the
same as being outdoors).
Setting this flag to 1 causes a series of
regulatory checks to be performed. If any
circumstances are identified that violate the
regulatory requirements, then the appropriate
parameter values are reset to the regulatory
maximum and the calculation continues. The
analyst may set REGCHECK = 0, which
bypasses the regulatory-check subroutine.
STANDARD
(Default) Value
2
1
2
1
MODSTD STANDARD (Default) VALUES LIST
75