Unit -1 Browns Ferry change out 185 drives during start-up activities, after this we were left with a mess in the sub-pile room dose rates coming off sump was 300/ 200 / 120 mrem/hr. With a lot of work still scheduled for the rod gallery we were pressed to reduce the dose rates.
We took an air operated vacuum with a transfer drum to processed the sludge up to the reactor building main elevation 15 feet up. It took about one hour (we did this on the lunch break to limit the amount of people in the area). At the completion we were left 5 fifty five gallon drums reading 5 R contact. Conditions in the sub-pile room were 15 / 8 / 4 mrem, no air problems. Raymond Rouse From: [email protected] [mailto:[email protected]] On Behalf Of Barnhill, Carlette Sent: Wednesday, August 10, 2011 1:06 PM To: [email protected] Subject: Powernet: Decon, Dose Rates and Data Progress Energy's Brunswick Plant (BWR with a Mark II containment) requests any information on clean-out of the Drywell sump(s) both outer floor and equipment drains as well as under vessel sumps. Sump dose rates, sludge disposal, man hour estimates, etc. Any information would be greatly appreciated. Contact Budd McLendon at [email protected] RC Supervisor- Progress Energy
