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Landauer
Aurion
TM
 Reference Guide
Landauer, Inc.
2 Science Road
Glenwood, IL 60425
(708) 755-7000
www.landauerinc.com
112502 Edition
Glossary
Accumulated dose - total dose accumulated on dosimeter
Active dosimeter - dosimeter that has a participant smart card inserted, has been properly
activated by the display unit, and is ready for use
Calibration Certificate – a certificate that provides calibration information on a dosimeter as
required by regulatory agencies and should be kept on file for reference (see Appendix B)
Calibration expiration – regulatory agencies require that dosimeters be calibrated on a regular
defined basis to be in compliance; the calibration expiration date in the U.S. is the date
the dosimeter was calibrated plus one year; check with your regulatory agency for your
calibration compliance period.
Charger - the plug-in device that maintains the charge of the battery in the display unit
Deactivate – process where an active dosimeter is made available so that a new participant
can use the dosimeter with a new smart card
Disabled dosimeter – a non-functioning dosimeter that cannot be used and must be returned
to Landauer
Display unit – piece of equipment required for reading out the exposure information from the
dosimeter
Grace period – a 30-day period that is allowed for use past the expiration date
Inactive dosimeter – a new dosimeter just received by the customer and never used, or a
dosimeter that has been properly deactivated by the display unit and is ready for
activation by a new participant
Integrated dose - dose since last activation of dosimeter for a given participant
Job code – standardized code for identifying different radiation work environments
Monitored dose - dose since last readout of dosimeter for a given participant
Overdose - the integrated dose exceeded 5 rem
Overflow - dosimeter exceeded its maximum dose capacity of 8 rem
Smart card - the removable component of the dosimeter that electronically identifies the
participant and wear location to the dosimeter and display unit
Use period expiration – Landauer’s defined period of time that a dosimeter or smart card is
used by a customer before an exchange or replacement is required (dosimeter:  6 months;
smart card: 1 year)