Re:Seeking background data on cinder block

["Mccormick, Luke I" <LUKE.Mccormick@dhs.gov>]

Tony,

It is quite a wide range for a reason. The Cinder block activity depends on

the origin of the aggregate  used in it. Usually this depends on where the

manufacturer is located since it doesn't pay to haul the stuff long

distances. Same is true of poured concrete. We have one parking lot at a

training facility in GA where, due to different sources of aggregate, one

side of the parking lot has over twice the background of the other. (10 vs

22 µR/hr)

Luke McCormick



____________________Reply Separator____________________

Subject:    Seeking background data on cinder block

Author:     owner-radsafe@list.Vanderbilt.Edu

Date:       8/25/2004 10:12 AM









       Radsafers:  I'm looking for referenceable data on the naturally

       occurring activity concentrations in cinder block.  The

       activity range

       provided in NCRP 94 is very broad and I don't have any previous

       analysis

       results for this material.  I would not be releasing any

       material or

       performing final status with the data.  If someone could lead

       me to or

       provide a resource for this information I'd very much

       appreciate it.

       Thanks in advance.  Tony



       Tony Mason, CHP

       Cabrera Services, Inc.

       (702)839-1731





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