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DOE-STD-3014-96
=
crosswind concentration standard deviation for
y
= 0.067 d0.9, where d = distance
F stability at 2 m/s (
y
to site boundary);
=
vertical concentration standard deviation for F stability
z
= 0.057 d0.8, 100m < d 500m, d = distance
at 2 m/s (
z
to site boundary; log10
= -1.91 + 1.37 log10d - 0.119
z
log102d, 500m < d < 104m, d = distance to site
boundary);
u
=
wind speed (2 m/s);
i
=
a unique designator for each material/form found in the
facility.
7.2.3.3
Radioactive Material Onsite Exposure Determination. In the rare instance
when assessment of exposure to onsite personnel outside the facility is
desired (see discussion in Appendix A, Section A.1.2), the exposure to
the maximally exposed individual at 300 m (984 ft) should be estimated in
a manner consistent with the assumptions used in DOE-STD-1027-92,
Attachment 1, for the calculation of Category 2 radiological thresholds,
but with a dose threshold of 25 rem (0.25 Sv) instead of the 1 rem (0.01
Sv) used in this standard. Equivalently, the Category 2 radiological
thresholds identified in DOE-STD-1027-92 can be used as the basis for
exposure determination, using the following equation.
MARi
X
(7-2)
i
Threshi
25
where:
MAR
=
material at risk (g or Ci);
84


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