Based upon industry benchmarking Fermi changed the display on our DMC2000 EDs
to show tenths of a millirem rather than whole numbers. Out of 27 sites that
responded (representing 45 units), 22 of them (representing 37 units) were
displaying dose in tenths of a millirem. If anyone is interested in a summary
I can send it to them. There have been some concerns voiced and documented in
our corrective action process with the wisdom in doing this resulting in my
additional questions below.
When you implemented displaying tenths of a milirem how did you handle concerns
such as:
Use of them in High Radiation or Locked High Radiation areas where it may be
hard to see the decimal point on the display.
Use of them during outages where lighting is limited and your ED is in a bag
inside your pocket making it hard to read.
What are the advantages of using tenths on the display?
Use of tenths isn't ALARA because its hard to read and takes more time to
determine what your dose is potentially causing you to receive additional dose.
Sorry for the long list. Thanks in advance for your assistance and have a
great day!
Brad Krupp
