Reg Guide 1.86 Table , Acceptable Surface Contamination Levels

["Redmond, Randy R. (RXQ) " <rxq@ornl.gov>]

> Looking for opinions, positions, and current practices concerning the
> following notes from Reg. Guide 1.86 when monitoring items with surface
> areas < 100 cm^2:
> 
> note c:  "Measurements of average contaminant should not be averaged over
> more than 1 square meter.  For objects of less surface area, the average
> should be derived for each such object."
> 
> note d:  "The maximum contamination level applies to an area of not more
> than 100 cm^2."
> 
> note e:  "The amount of removable radioactive material per 100 cm^2 of
> surface area should be determined by wiping that area with dry filter or
> soft absorbent paper, applying moderate pressure, and assessing the amount
> of radioactive material on the wipe with an appropriate instrument of know
> efficiency.  When removable contamination on objects of less surface area
> is determined, the pertinent levels should be reduced proportionally and
> the entire surface should be wiped.
> 
> Concerning note c - are you reducing the pertinent average level
> proportionally when performing the direct measurement (similar to note e
> concerning removable), or using the average level  (similar to note d
> concerning the maximum level)?
> 
> Concerning note e - are you reducing the pertinent removable level
> proportionately when performing the removable measurement?
> 
Are you measuring the total and removable levels and, regardless of the size
of the item, releasing it if less than the average and removable levels (do
not consider ALARA)?

> As usual, thanks for your input.
> 
> Randy Redmond
> Lockheed Martin Energy Systems
> Radiological Control Organization
> Email:  rxq@Y12.doe.gov
> Phone:  865-574-5640
> Fax:  865-574-0117
> 
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