As a member of the committee that worked on the document -
The intent of a level one PCE was to document and evaluate the radioactive
material control program. As as result a PCE would be any contamination
greater than 100 dpm (>100 ccpm) on the outside of the item such as clothing,
shoes etc. Which if this is a measure of your program - it does not make any
sense to count the activity on the inside of the garment.
The purpose of the inside count was to evaluate the potential skin dose as a
result - of which there are various methods to do this.
Willie Harris, CHP
Corporate Radiation Protection Manager
Exelon
Nuclear
200 Exelon Way
Kennett Square, PA 19438
Contact Info:
(C) 484-885-0578
(W) 610-765-5350
Email: [email protected] <mailto:[email protected]>
________________________________
From: [email protected] [mailto:[email protected]] On Behalf Of
[email protected]
Sent: Sunday, October 17, 2010 11:48 AM
To: [email protected]
Subject: Powernet: PCE Question
Friends,
Do you look for >100 ncpm on the inside of clothing before classifying a
clothing PCE as Level 1? Been recommended to me that EPRI guidance (excerpted
below) is interpreted as suggesting that approach at some benchmark plants.
The determination of the EPRI PCE level classification should be based on a
frisker reading of the
skin or the highest reading on clothing. For skin contaminations, a frisker
reading should be the
maximum reading with the frisker held approximately ½ inch away from the
affected skin. For
clothing, the frisker reading should be on the inside of the clothing with the
detector faced away
from the skin.
EPRI
"Guidelines for Industry Response to Personnel Contaminations Rev 1"
thank you,
Mark Lewis
Health Physics Division Manager
San Onofre Nuclear Generating Station (D1N)
Work: (949) 368-1140
[email protected]
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