Table C–1. Radiation Dose Equivalent Rates in Millirems per Hours
SURFACE
1 METER
GAUGE
Front 19.0 1.5 20.5 5.0 0.5 5.5 1.2 0.2 1.4 0.3 0.1 0.4
Back 18.0 0.8 18.8 6.0 0.4 6.4 1.5 0.2 1.7 0.2 0.1 0.3
Left Side 13.0 0.4 13.4 3.0 0.2 3.2 0.8 0.1 0.9 0.1 0.1 0.2
Right Side 12.0 0.6 12.6 6.0 0.3 6.3 3.0 0.2 3.2 0.5 0.15 0.65
Top 19.0 0.9 19.9 3.5 0.6 4.1 0.6 0.4 1.0 0.15 0.1 0.25
Bottom 18.0 1.9 19.9 4.0 1.2 5.2 0.7 0.4 1.1
*
0.1 0.1
TRANSPORT CASE
WITH GAUGE
Front 8.0 0.3 8.3 3.0 0.25 3.25 1.1 0.15 1.25 0.3
*
0.3
Back 7.0 0.3 7.3 3.0 0.2 3.2 1.0 0.1 1.1 0.2
*
0.2
Left Side 0.4 0.1 0.5 0.3
*
0.3 0.2
*
0.2 0.2
*
0.2
Right Side 6.0 1.4 7.4 2.0 0.7 2.7 0.6 0.25 0.85 0.2 0.1 0.3
Top 13.0 0.2 13.2 3.0 0.15 3.15 0.9
*
0.9 0.3
*
0.3
Bottom 8.0 0.3 8.3 4.0 0.1 4.1 2.5 0.1 2.6 0.6
*
0.6
NOTES:
1.
Dose rates measured by the State of North Carolina Department of
Environment, Health, and Natural Resources, Division of Radiation Protection.
2.
All values in mrem/hr.
3.
Indicates a reading of less than 0.1 mrem/hr.
4.
Dose equivalent rates for 0.3 GBq (8 mCi) Cs-137 gamma source and 1.48 GBq
(40 mCi) Am-241:Be neutron source
5.
Surface indicates surface of gauge or surface of transport case.
6.
Gamma measurements made with Ludlum Model 14C Survey Meter, calibrated
September 1987.
7.
Neutron measurements made with Nuclear Research Corporation Model NP-2
Survey Meter, calibrated March 1988.
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