Columbia's Response
1) How many Hot Spots does your station have? 41, this is down from a high of 77. 2) What is your criteria for posting a Hot Spot (ie. 100 mrem/hr contact and 5 times the general area...)? An accessible Hot Spot, a Hot Spot is defined as a component where contact dose rates are greater than 100 mrem/hr and greater than five times the general area dose rates. . 3) What is your program requirements for flushing/removing Hot Spots? Hot Spots are surveyed every six months and evaluated by the Radiological Planning group for possible flushing to reduce G/A dose rates. If their evaluation determines flushing will have an impact on reducing the plants Cumulative Radiation Exposure a work order will initiated to flush the system and attempt to reduce or remove the Hot Spot. Additionally, our routine survey program contains a supplementary 158 trending points throughout the power block which are evaluated weekly by the Radiological Planning group for possible decontamination or shielding. Ray Thomson Columbia Generating Station Health Physics Craft Supervisor [email protected] 509-377-8273 From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, November 13, 2012 8:12 AM To: [email protected] Subject: Powernet: Three Simple Questions for your Hot Spot Program In an attempt to gauge our HOT SPOT Program with other facilities and improve our ALARA Program, the San Onofre ALARA Planning Team have several questions: 1) How many Hot Spots does your station have? 2) What is your criteria for posting a Hot Spot (ie. 100 mrem/hr contact and 5 times the general area...)? 3) What is your program requirements for flushing/removing Hot Spots? Dustin Weim ALARA Planning Radiation Protection Division San Onofre Nuclear Generating Station (949)368-5495 ----------------------------------- Powernet - a service of the Health Physics Society Power Reactor Section Powernet archives at http://www.mail-archive.com/[email protected]/ Reply to: [email protected]<mailto:[email protected]> If Questions, contact Mike Russell, CHP at [email protected]<mailto:[email protected]>
