Table 1-5 Neutrons - hdbk1130cn20201

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

Physical

No charge.

Characteristic

Has mass.

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.

Biological

The hazard is generally external.

Hazard

Insert facility-specific information.

Sources

Units of Measure for Radiation

1. Roentgen (R)

Is a unit for measuring external exposure.

b. Defined only for effect on air.

c. Applies only to gamma and X rays.