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

DOE-HDBK-1113-98

Module 103 External Dose Control

Lesson Plan

Instructor's Notes

External Dose Reduction and Control Techniques

External Dose Control Program

The primary purpose of an external dose control

program is to control dose to the individual radiation

worker to below regulatory limits and administrative

levels and ensuring that doses are As Low As

Reasonably Achievable (ALARA). In all cases at

DOE facilities, dose received by an individual shall

not exceed the limits specified in Title 10 of the

Code of Federal Regulations, Part 835 (10 CFR

835).

The elements of an external dose control program

include:

detecting and characterizing the beta, gamma,

X-ray, and neutron radiation fields;

measuring and/or quantifying these radiation

fields;

measuring personnel exposure; and

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determining external exposure control practices.

General External Dose Control Practices

These general principles should be applied to

control external dose from uranium:

minimizing time in the radiation field,

maximizing the distance from the radiation

source,

using shielding to reduce the radiation field, and

reducing the amount of radioactive material

being used.