Alarming Dosimeters - hdbk110997

DOE-HDBK-1109-97

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

Instructor=s Guide

Lesson Plan

Instructor=s Notes

dosimeters are manufactured with scales in several

different ranges, but the 0B500 mR range, marked

in increments of 20 mR, is often used. The dose is

read by observing the position of a hairline that

moves upscale in proportion to dose. Pocket

dosimeters are supplemental and used primarily as

radiological worker management tools. They are

not typically used for determining the dose of

record required by 10 CFR 835.

iv. Alarming Dosimeters.

In higher dose-rate areas, an alarming dosimeter

may be used to provide an audible warning of

radiation. This contributes to keeping doses

ALARA by increasing a worker's awareness of the

radiation.

Specific applications may require special

considerations. For example, low-energy X-rays

will not penetrate the walls of some dosimeters.

Flash X-ray devices produce a very short pulse that

is not correctly measured by most dose-rate

instruments.

(Insert facility-specific information as appropriate.)