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DOE-HDBK-1130-98
2) The range in air is very far. Like gamma rays, they can easily travel several hundred
feet in air.
c. Shielding
Neutron radiation is best shielded by materials with a high hydrogen content such as
water, concrete, or plastic.
d. Biological hazards
Neutrons are a whole body hazard due to their high penetrating ability.
e.
Sources
(Insert facility-specific information.)
Table 1-5
Neutrons
Physical
No charge.
Characteristic
Has mass.
s
Range in air is very far.
Easily can go several hundred feet.
Range
High penetrating power due to lack of charge
(difficult to stop).
Water.
Concrete.
Shielding
Plastic (high hydrogen content).
Whole body exposure.
The hazard is generally external.
Hazard
Insert facility-specific information.
Sources
D.
Units of Measure for Radiation
1. Roentgen (R)
a.
Is a unit for measuring external exposure.
b. Defined only for effect on air.
c. Applies only to gamma and X rays.
11


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