Monticello would like input regarding current industry practice for use of MDA or DL to determine when contamination is detected.
When counting smears for loose contamination on a smear counter: Do any sites use the Decision Level (DL) as the basis for determination of whether contamination is detected? The DL in this case is where the measurement is statistically above background; not the MDA. If the smear counter measurement is greater than the DL (contamination is detected), what are the follow-up actions? Do you re-count the smear? How many times? When counting loose-contamination smears for free-release of items, are a special population of "clean" planchets used? Do you have designated smear counter equipment used for free-release counts? Your response is appreciated. Scott Huneycutt Xcel Energy | Responsible By Nature Health Physicist Monticello Nuclear Generating Plant 2807 West County Road 75, Monticello, MN 55362 P: 763.295.1380 F: 763.295.1225 E: [email protected]<mailto:[email protected]> ________________________________________________ <blocked::blocked::http://www.xcelenergy.com/>XCELENERGY.COM<http://www.xcelenergy.com/> Please consider the environment before printing this email
