Columbia Generating Station response noted below. Ray Thomson Health Physics Staff Advisor Columbia Generating Station [email protected] 509-377-8273
From: [email protected] [mailto:[email protected]] On Behalf Of Michael C Wynn Sent: Thursday, July 07, 2011 7:40 AM To: [email protected] Subject: Powernet: Bulk Volumetric Material Release from Protected or Controlled Areas Millstone Power Station would like to know concerning release of bulk volumetric materials from the Protected or Controlled Areas the following questions: 1. What are the radiological controls at your station for activities in areas outside the RCA, but within the Protected Area (also known as Restricted Area for radiation protection purposes), that involve renovation, repair, excavation, drilling, digging or cutting of material, components or soil that contain or may contain radioactive material? Requirements for soil sampling are determined during the Work Order Planning process. All excavations are required to be processed through the ALARA Planning department which determines the sampling frequency. The ALARA planner is required by procedure to sign all excavation permits prior to the start of excavations. The use of a risk assessment guideline determines the sampling frequency. What are the radiological controls for these activities in the Controlled Area (as defined in 10 CFR 20)? They are controlled by the same process and procedures as the Protected Area. 2. If applicable, is there guidance on determining: "contain or may contain radioactive material"? The risk assessment guideline uses information collected and documented in our Decommissioning Recordkeeping Log. This log identifies all areas onsite that contain or have historically contained radioactive materials. 3. Is any allowance made for residual Cs-137 in soil from weapons fallout that is not considered licensed radioactive material from plant operations? Soil analysis is to compared to known background levels contained in the Radiological Environmental Monitoring Program (REMP) annual report. 4. How is RP notified of these types of activities outside the RCA? Through the Work Order Planning process. 5. If an RWP is required: a. What general controls are specified? If the area is known to contain Radioactive Material the Radiation Protection department will be directly involved, otherwise the craft performing the excavation is responsible for soil sampling. b. Are all supplemental personnel (for example roofers, laborers) required to have full radiation worker qualification, or a lower level such as escorted radiation worker? Inside the Protected Area supplemental workers receive full Radiation Worker qualification in virtually all cases. c. Do the workers log-on the exposure control system with an electronic dosimeter for the RWP and wear the dosimeter during work activities? Not unless Radioactive Material are identified and the work is controlled by a RWP. Thank you all in advance for you help. Michael C. Wynn Supervisor Radiological Analysis Millstone Power Station Bldg. 437/2 Rope Ferry Road Waterford, CT 06370 Office: (860) 447-1791 Ext. 4815 Fax: (860) 444-4241 http://www.dom.com/ CONFIDENTIALITY NOTICE: This electronic message contains information which may be legally confidential and/or privileged and does not in any case represent a firm ENERGY COMMODITY bid or offer relating thereto which binds the sender without an additional express written confirmation to that effect. The information is intended solely for the individual or entity named above and access by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution, or use of the contents of this information is prohibited and may be unlawful. If you have received this electronic transmission in error, please reply immediately to the sender that you have received the message in error, and delete it. Thank you.
