Table 1-5 Neutrons - hdbk11300203

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.

Sources

(Insert facility-specific information.)

Table 1-5

Neutrons

No charge.

Physical

Has mass.

Characteristics

Range in air is very far.

Easily can go several hundred feet.

High penetrating power due to lack of charge

(difficult to stop).

Range

Water.

Concrete.

Plastic (high hydrogen content).

Shielding

Whole body exposure.

Biological

The hazard is generally external.

Hazard

Insert facility-spec ific information.

Sources

D. Units of Measure for Radiation

1. Roentgen (R)

Is a unit for measuring external exposure.

b. Defined only for effect on air.