Help | Contact Us
NukeWorker.com
NukeWorker Menu Looking for a calculator for Cf-252 spontaneous fission rate

Author Topic: Looking for a calculator for Cf-252 spontaneous fission rate  (Read 13146 times)

0 Members and 1 Guest are viewing this topic.

Offline stormgoalie

  • Former RP Supervisor, now an Engineer......
  • Very Heavy User
  • *****
  • Posts: 915
  • Total likes: 0
  • Karma: 2112
  • Gender: Male
  • Go fast or go home!
Trying to find an online calculator that can provide me the approximate neutron dose rate for a given activity of Cf-252. I am receiving a source as waste and want to establish the estimated dose rate as I have no neutron monitoring capability.  Any help would be appreciated.

WARNING: Translation of author's random thoughts may have resulted in the unintended introduction of grammatical errors, typos, technical inaccuracies, lies, propaganda, rhetoric, or blasphemy.

Offline Rennhack

Have you tried the RadPro Calculator linked to in the study section, under calculators?

http://www.nukeworker.com/study/calculators.shtml

Offline stormgoalie

  • Former RP Supervisor, now an Engineer......
  • Very Heavy User
  • *****
  • Posts: 915
  • Total likes: 0
  • Karma: 2112
  • Gender: Male
  • Go fast or go home!
Yep, nothing there that covers this at all.  Reason I am looking is that we are receiving a 2.35 mCi Cf-252 source as waste and there are questions as to its neutron dose rates, if any at all.  Am hoping to find a quick and dirty approximation to pass on to my Health Physicist to assist him.

WARNING: Translation of author's random thoughts may have resulted in the unintended introduction of grammatical errors, typos, technical inaccuracies, lies, propaganda, rhetoric, or blasphemy.

Offline cincinnatinuke

  • Chemistry Technician CCNPP
  • Moderate User
  • ***
  • Posts: 210
  • Total likes: 0
  • Karma: 372
  • Gender: Male
  • Tell Recruiters to use NukeWorker.com
Have you tried to contact the dose manufacturer directly?  Give a Canberra or IPL a call and they may have the information you need.  They can probably give the birth certificate on the source if it is one they made and that should have info like manufacture date, emission rate for beta and neutron sources or AKR for gamma sources.

If it is being shipped to you special form, then you may get this certificate as documentation.  Or you could request the original user to send what he has.

AnotherExELT

  • Guest
Actually I currently work for one of those source manufacturers get in contact w/ me and I'd be glad to help you out. CF-252 sources are one of my specialties. I'd be surprised if the OEM isn't willing to take the source back FOC for recycling.

Offline Rennhack

We have a winner!  I love this site.  Thanks AnotherExELT.

Offline stormgoalie

  • Former RP Supervisor, now an Engineer......
  • Very Heavy User
  • *****
  • Posts: 915
  • Total likes: 0
  • Karma: 2112
  • Gender: Male
  • Go fast or go home!
Actually I currently work for one of those source manufacturers get in contact w/ me and I'd be glad to help you out. CF-252 sources are one of my specialties. I'd be surprised if the OEM isn't willing to take the source back FOC for recycling.

I PM'd you. Thanks for the offer to assist. By the way of an update we have denied acceptance of this source pending a request for more information. Also, further investigation indicated that the activity value supplied by the waste generator was from 1992!! Given the relatively short half life of Cf-252 (just over 2 years) a quick decay calculation brings the activity down to a more comfy level as it were ;D All the responses are appreciated and keep on making this site the great resource that it is.

Cheers,
Jim
WARNING: Translation of author's random thoughts may have resulted in the unintended introduction of grammatical errors, typos, technical inaccuracies, lies, propaganda, rhetoric, or blasphemy.

Offline TN-Man

  • Light User
  • **
  • Posts: 40
  • Total likes: 0
  • Karma: 69
  • Gender: Male
  • It's not the ending that matters..It's the journey
Maybe this is too simple, but I was looking on our internal ( ORNL) HP web page and we have a copy of the Los Alamos Radiation Monitoring Notebook LA-UR-2584 June 2000 by James T. (Tom ) Voss. On page 73 there is a table of "Radiation Levels of commonly encountered Radionuclide" and for Cf-252 it gives a value of 0.46 mR/hr/mCi at 30 cm. It might be the good estimate you need.
Some one tell me if I used this table incorrectly.

Sometimes I look back on my life and think I could have had to work for a living. Thank God, I'm an HP.

 


NukeWorker ™ is a registered trademark of NukeWorker.com ™, LLC © 1996-2019 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?