Help | Contact Us
NukeWorker.com
NukeWorker Menu Canberra iCAM Integrated Concentration

Author Topic: Canberra iCAM Integrated Concentration  (Read 4163 times)

0 Members and 1 Guest are viewing this topic.

Offline CanadianRP

Canberra iCAM Integrated Concentration
« on: Mar 01, 2014, 08:35 »
Could someone please help me understand the use of DACh on an iCAM?  Specifically what does a reading in DACh mean for a worker?  DACh as I understand it is analagous to total dose on a PAD, therefore how can the display go down as well as up?  I realize this is probably a stupid question, just cant wrap my puny brain around it.

Offline Vanilla Xtract

  • Very Lite User
  • *
  • Posts: 5
  • Total likes: 0
  • Karma: 17
  • Tell Recruiters to use NukeWorker.com
Re: Canberra iCAM Integrated Concentration
« Reply #1 on: Mar 29, 2014, 09:36 »
DAC - Derived Air Concentration. DAC is calculated based off of nuclides in the air and their concentration of uCi/volume. One DAC is equal to 2.5 mREM.

DAC-hr is the amount of time exposed to that concentration.

As a sampler runs, in this case the iCAM, the concentration might change.

We'll use easy numbers for an example. The iCAM is turned on and sees an air concentration 10DAC of Co-60. Over the next hour, the display will trend up and finally show 10DACh after an hour. Then all of a sudden, the Co-60 goes away to 0 DAC. The display will trend down over the next hour until it reaches 5DACh. This is because if you were in the area for two hours, you would have seen 5DACh each hour, on average.

Hope this helps some.

SCMasterchef

  • Guest
Re: Canberra iCAM Integrated Concentration
« Reply #2 on: Apr 01, 2014, 01:03 »
That is assuming that your annual dose is 5 Rem/working year (2000 hrs) = 2.5 mRem/dac X hours in area = dac/h.  I am not sure, but if not mistaken, Canada does not currently recognize the DAC but is still using the MPC, which they calculate themselves and are not dictated to by the Feds.  So if you working at a CA plant the DAC may not mean a lot.  Could be wrong.
« Last Edit: Apr 01, 2014, 01:07 by SCMasterchef »

Ed

  • Guest
Re: Canberra iCAM Integrated Concentration
« Reply #3 on: Apr 03, 2014, 03:53 »
Could someone please help me understand the use of DACh on an iCAM?


did that iCAM come with a manual by any chance? did You check the manual that came with that iCAM?  RTFM;   READ the manual please

and You can almost always get a free manual freely from the manufacturer site in pdf format.
« Last Edit: Apr 03, 2014, 04:13 by Ed »

 


NukeWorker ™ is a registered trademark of NukeWorker.com ™, LLC © 1996-2021 All rights reserved.
All material on this Web Site, including text, photographs, graphics, code and/or software, are protected by international copyright/trademark laws and treaties. Unauthorized use is not permitted. You may not modify, copy, reproduce, republish, upload, post, transmit or distribute, in any manner, the material on this web site or any portion of it. Doing so will result in severe civil and criminal penalties, and will be prosecuted to the maximum extent possible under the law.
Privacy Statement | Terms of Use | Code of Conduct | Spam Policy | Advertising Info | Contact Us | Forum Rules | Password Problem?