Personnel monitoring - DOE-HDBK-1145-2001

Radiological Safety Training for Plutonium Facilities

DOEHDBK11452001

Instructor's Guide

Lapel air samplers

Lapel air samplers are small battery-

powered devices, attached to workers'

lapels, that draw air through a filter to collect

radioactive particulates for determination of

the air concentration breathed by the

worker.

Show OT 32.

B. Personnel monitoring

Obj. 7

1. External dosimetry

Identify the following

monitoring techniques for

The most common device used to monitor

worker dose is the thermoluninescent dosimeter plutonium:

Detection

(TLD). Dosimeters can be configured to

Dosimetry

monitor beta, gamma, x-ray, and neutron

Insert site policy for wearing

Supplemental dosimeters (TLDs in finger rings

dosimeters.

or wrist bands) may also be worn for monitoring

extremity dose.

Insert site policy for use of

There are dosimeters and gamma pencils

finger rings.

equipped with alarms that can be used, but they

must be specially made for low-energy gamma

Use site-specific terminology

rays. Nuclear accident dosimeters (NADs) are

for NADs.

required for facilities with sufficient quantities of

plutonium to form a critical mass. They are

issued to personnel and are also stationed

throughout the facility. They contain different

types of materials that become radioactive

through neutron activation. The neutron dose is

determined by evaluating the amount of

activation of the NAD material.