Personnel-Monitoring Devices - hdbk110997

DOE-HDBK-1109-97

Radiological Safety Training for Radiation-Producing (X-Ray) Devices

Instructor=s Guide

Lesson Plan

Instructor=s Notes

rem (R/hour, mR/hour, rem/hour, mrem/hour)

rather than counts per minute (cpm) or

disintegrations per minute (dpm). Ion chambers

measure energy deposited and are good instruments

for measuring X-ray radiation dose levels.

Instruments such as Geiger-Mueller (GM) counters

are effective for detection of radiation because of

their good sensitivity. However, because both

low-energy and high-energy photons discharge the

counter, GM counters do not quantify a dose well.

A thin-window GM counter is the instrument of

choice for the detection of X-rays. However, this is

not the instrument of choice for measurement of X-

ray dose.

ii. Facility-Specific Instrumentation.

(Insert facility-specific information on

instrumentation, as appropriate.)

PERSONNEL-MONITORING DEVICES

Objective 2

Note: X-ray leakage from RPD housings or shielding

may be a narrow beam that is difficult to detect and

may not be recorded by personnel monitoring devices.

Whole Body Dosimeters.

Operators of intentional X-ray devices usually wear

10 CFR 835.801(d)

dosimetry such as thermoluminescent dosimeters

(TLDs) film or badges. These dosimeters can

accurately measure radiation doses as low as 10