Cooper Nuclear has the following guidance in our "ALARA and Job Planning" procedure for comparing initial surveys to RWP setpoints:
"3.5 When the job is started, ALARA or Radiation Protection will review the initial work area surveys to validate dose rate and exposure assumptions used during package development. If during the review of the original surveys it is determined that radiological conditions were not as anticipated, the package should be evaluated for possible revision." Additionally, the dose rates in our Drywell have been recorded for 4 cycles and compared to determine the overall increase during the last operation cycle. Prior to the start of work, surveys are performed and that information has been used to establish estimated dose prior to work beginning. A copy of our EXCEL worksheet could be sent if you request. Steven Rezab From: [email protected] [mailto:[email protected]] On Behalf Of Thompson, David A Sent: Wednesday, September 29, 2010 6:25 AM To: ([email protected]) Subject: Powernet: RWP Setpoint Changes Duke currently establishes RWP dose and dose rate setpoints based on historical data for outages, with various tasks under the RWP having setpoints commensurate with the area work is to be performed. Does anybody have a process where they would adjust these established setpoints once the unit is off-line, and initial surveys are completed, dependent on conditions identified? David A. Thompson, CHP Manager Nuclear Fleet RP/Chemistry [email protected] 704-382-6773
