Model 3440-L C–5
C. RADIOLOGICAL SAFET
Table C–1. Radiation Profile
(Dose Equivalent Rates in Millirems per Hour)
5 cm 30 cm 1 m
Gamma
Neutron
Total
Gamma
Neutron
Total
Gamma
Neutron
Total
GAUGE
Back 12 NA 12 1.2 0.1 1.3 0.19 0.05 0.24
Right Side 7.5 NA 7.5 3 * 3 0.6 * 0.6
Front 9.5 NA 9.5 1.2 0.15 1.35 0.18 * 0.18
Left Side 11 NA 11 0.85 * 0.85 0.1 * 0.1
Top 7 NA 7 0.8 0.1 0.9 0.08 * 0.08
Bottom 8 NA 8 0.7 0.1 0.8 0.08 0.05 0.13
GAUGE IN TRANSPORT CASE
Back 4 NA 4 0.8 * 0.8 0.13 * 0.13
Right Side 3 NA 3 0.5 0.1 0.6 0.09 * 0.09
Front 3 NA 3 0.95 * 0.95 0.13 * 0.13
Left Side 0.4 NA 0.4 0.15 * 0.15 0.06 * 0.06
Top 3.8 NA 3.8 0.6 0.05 0.65 0.1 * 0.1
Bottom 4.5 NA 4.5 2 0.05 2.05 0.4 * 0.4
NOTES:
1. Dose rates are for a gauge with 0.3 GBq (8 mCi) Cs-137 and
0.56 GBq (15 mCi) Am-241:Be.
2. All radiation measurements are in millirem per hour.
3. Gamma measurements were obtained with a Bicron Microrem
survey meter, calibrated April 2007.
4. Neutron measurements were obtained with a Nuclear Research
Corporation Model NP-2 survey meter, calibrated July 2006.
5. An asterisk (*) denotes a radiation measurement less than 0.05
millirems per hour.
6. The notation “NA” indicates that the neutron dose rate could not be
measured at this distance because of the detector dimensions.
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