Re: DCF

[Glenn Roberts <glenn@u1st.com>]

After doing the conversion on paper instead of in my head from my
previous post, I have to agree with Rodney.  EPA-520 lists the W class
Pu-239 inhalation for CEDE and Bone Surfaces as 1.16 E-4 and 2.11 E-3
Sv/Bq.  With a conversion of 3.7 E9 mrem/uCi per Sv/Bq, we have 4.29 E 5
and 7.81 E 3 mrem/uCi.  Here's were I recogized the conversion to rem/Ci
would be a factor of 3 and then agreed with the previously stated orders
of magnitude.  However, the correct DCF's based on these numbers are

4.29 E 8 rem/Ci CEDE
7.81 E 9 rem/Ci B. Surface

Glenn




"Hooda, Benny" wrote:
> 
> Yes, you are right it rem/uCi
> Thanks,
> 
> > ----------
> > From:         Rodney Bauman[SMTP:rodney_bauman@wssrap-host.wssrap.com]
> > Sent:         Friday, February 25, 2000 9:14 AM
> > To:   Multiple recipients of list
> > Subject:      Re:DCF
> >
> > The CEDE conversion factors listed in the original posting are low by six
> > orders
> > of magnitude.  The correct values are 4.29 E8 rem/curie and 5.10 E8
> > rem/curie
> > (you may have meant rem/microcurie).
> >
> > I did a quick run on the CINDY code and got a result of 4.4 E8 rem/curie
> > for the
> > inhalation of Class-W Pu-239.  It looks like FGR 11 and the CINDY code
> > pretty
> > much agree on this one.  I do not know the source or accuracy of the
> > DOE/EH-0071
> > values.
> >
> > Rodney Bauman, CHP, RRPT
> > rodney_bauman@wssrap-host.wssrap.com
> >
> > ____________________Reply Separator____________________
> > Subject:    DCF
> > Author: <radsafe@romulus.ehs.uiuc.edu>
> > Date:       02/25/2000 8:49 AM
> >
> > Radsafers:
> > Does any one have an opinion regarding use of  Committed Effective Dose
> > Equivalent conversion factor for Pu-239 (class W, inhalation) from FGR 11
> > and Radiological Health Handbook or from DOE/EH-0071. The values listed
> > are
> > different 4.29E 2 rem/curie for FGR 11 and 5.10 E 2 rem/curie for
> > DOE/EH-0071.
> >
> >
> > ************************************************************************
> > The RADSAFE Frequently Asked Questions list, archives and subscription
> > information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html
> >
> ************************************************************************
> The RADSAFE Frequently Asked Questions list, archives and subscription
> information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html
************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html