Years ago Browns Ferry did this. I do not remember seeing anything when I surveyed it. It was a reduced power They have not done this in a while that I know of. We do not have Mark I containment though, I believe we are Mark 4
Chuck Creamer Charles E. Creamer Health Physicist Tennessee Valley Authority Browns Ferry Nuclear Plant P.O. Box 2000 (Mail Stop NAB-1G-BFN) Decatur, Al. 35609-2000 Phone: 256-729-2983 Fax: 256-729-3101 Pager: 1-800-323-4853, pin 30-053 mailto:[email protected] <mailto:[email protected]> From: [email protected] [mailto:[email protected]] On Behalf Of Mathiasen, Glenn D. Sent: Friday, February 15, 2013 7:42 AM To: [email protected] Subject: Powernet: Question re: Pulling Rx Cavity Shield Blocks Prior to Shutdown for BWRs with Mark I Containment This question is for BWRs with a Mark I Containment. Monticello is considering pulling one layer of Rx Cavity Shield Blocks prior to shut-down, but at a reduced power level. If your station has experience with this activity, at what power level were the shield blocks removed and what dose rates were encountered? Thank you. Glenn Mathiasen, CHP Xcel Energy | Responsible By Nature Principal Health Physicist 2807 West County Road 75, Monticello, MN 55362 P: 763.295.1384 F: 763.295.1225 E: [email protected] <mailto:[email protected]> _________________________________________________ XCELENERGY.COM Please consider the environment before printing this email.
