Internal Dose Reduction and Control Techniques - doe-hdbk-1113-98_reaffirm_2005

DOE-HDBK-1113-98

Module 104 Internal Dose Control

Lesson Plan

Instructor's Notes

Alpha and beta radiation emitted by material

inside the body is shielded by body tissue and

cannot be detected.

Direct measurement is useful for detecting

uranium that is not easily eliminated by the

body. This method may also be used to estimate

an internal dose. Because of the very low energy

and intensity of gamma radiation emitted from

depleted uranium, direct measurements are not

effective in detecting depleted uranium in the

body.

Internal Dose Reduction and Control Techniques

The hierarchy for minimization of internal dose is

given in the RCS, Article 316. Engineering controls

should be the primary method of minimizing

airborne contamination and internal exposure to

workers, where practicable. Administrative controls,

including access controls and specific work

practices, should be used as the secondary method to

minimize internal exposure. If the potential for

airborne radioactivity still exists after engineering

and administrative controls have been applied,

respiratory protection should be considered. Other

specific controls, such as stay times, worker safety,

comfort, and efficiency, are also discussed in Article

316.