RE: Data on Porous Surfaces -Reply

["Honerlah, Hans B NAB02" <Hans.B.Honerlah@nab02.usace.army.mil>]

Joelle

I have a signed copy dated June 1998.  The draft went out in August 1995,
changes were incorporated and the statement on the signature page reads" The
result, approaches and methods described herein are provided for information
only and should not be considered a substitute for NRC requirements".

I am not sure when the web site will be updated.  Correct, most of this is
also discussed in the MARSSIM and I am interested if anyone is utilizing the
new approaches on remediation sites.

Hans B Honerlah, USACE, Baltimore
hans.b.honerlah@usace.army.mil

		-----Original Message-----
		From:	Joelle Key [mailto:jkey@mail.state.tn.us]
		Sent:	Monday, November 09, 1998 9:47 AM
		To:	Multiple recipients of list
		Subject:	RE: Data on Porous Surfaces -Reply

		The copy of this document in our office says "Draft Report
for Comment."
		 When I looked at the NRC web site, it says "Pre-published
Draft."  Is this
		document still in draft or do I need to look somewhere else?
If it is still in
		draft... what is its status... I mean are people using it
anyway... is it being
		generally accepted?  What is holding it up?  Isn't most of
this stuff in
		MARSSIM?  I have only glanced at it, but it looks familiar.
:-)

		Joelle Key
		jkey@mail.state.tn.us

		>>> "Honerlah, Hans B NAB02"
		<Hans.B.Honerlah@nab02.usace.army.mil> 11/04/98 07:52am >>>
		You may want to look at NUREG-1507 "Minimum Detectable
		Concentrations With
		Typical Radiation Survey Instruments for Various
Contaminants and Field
		Conditions".  This discusses several conditions that may
impact you
		survey
		results, (i.e. effects of oils/paints/water/dust, as well
as, different
		types of material wood/tile/concrete...).  I think this
document can be
		downloaded from the NRC home page.  Some folks at ORNL who
put this
		together
		and may have more information.  This also discusses some new
		MDC/total
		activity equations utilizing two efficiencies - one is the
instrument
		efficiency - two is the source efficiency / surface
efficiency.  This is
		also recommending the surveyor use experimentally determined
surface
		efficiencies for anticipated field conditions.

		Has anyone out started utilizing any of this new equations
and or any
		comments on their viability/cost effectiveness for
decommissioning
		activities?       

		Hans Honerlah, USACE, Baltimore
		hans.b.honerlah@usace.army.mil
		<mailto:hans.b.honerlah@usace.army.mil>  


				-----Original Message-----
				From:	Redmond, Randy R. (RXQ)
[mailto:RXQ@ornl.gov]
				Sent:	Wednesday, November 04, 1998 6:36 AM
				To:	Multiple recipients of list
				Subject:	Data on Porous Surfaces

				I am trying to find some data or,
preferably, reports or
		articles, which
				deal with the expected quantity of rad
contamination
		which
		could be
				trapped in the pores of a porous surface and
remain
		undetected while an
				alpha scan shows the surface to be at or
below some
		release
		criteria.
				Surely, someone has done an experimental or
theoretical
		study of this -
				I am just after a very rough estimate of
what we might
		have
		hidden in
				the pores of a closed cell foam rubber.
Data for large cell
		porous
				ceramics or weathered wood would probably be
quite
		relevant.


				Randy Redmond
				Lockheed Martin Energy Systems
				P.O. Box 2009
				Bldg.  9769,  MS 8081
				Oak Ridge, TN  37831-8081
				Email:  rxq@cosmail3.ctd.ornl.gov
				Phone:  423-574-5640
				Fax:  423-576-6047

			
	
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