Columbia Generating Stations response included below. Ray Thomson Health Physics Staff Advisor Columbia Generating Station [email protected] 509-377-8273 (office) 509-551-5650 (cell)
From: [email protected] [mailto:[email protected]] On Behalf Of Barber, Jerry Sent: Friday, May 27, 2011 5:33 AM To: [email protected] Subject: Powernet: Robinson Benchmark - RCA Tool Control and Tool Decontamination Sorry for having to repost, I forgot to include the Subject Lot of great benchmarks on Powernet right now, here's another. Good friend of mine needs help with his, please help if you can.......thanks! > RCA Tool Control and Decontamination of Tools 1. What type of decontamination facility is used for tool decontamination? i.e. Kelly enclosure type building, stainless steel decon room/trailer, or other type decon facility. Room in our Rad. Waste building set up for decontamination of tools and material. 2. What types of tools are most frequently released from the RCA? (I&C instruments/torque wrenches or gauges, Specialty tools, etc.) Columbia has a no RCA release policy for common tools. Speciality Tools require HP Supervision approval to be taken into the RCA and release from the RCA. 3. What are the fixed and smearable limits for tools and equipment maintained in the RCA? LTE 5000 cpm/probe area fixed are painted purple or tagged with a data label. GTE 5000 cpm/probe are required to have a data label attached and are to be used in Contaminated Areas only. How are tools surveyed for fixed contamination prior to their return to the RCA Tool Room - i.e. SAM-9, Cronos-4, frisked, or other method? Is there a different fixed contamination limit for Containment vs. Auxiliary Building tools? NO 4. For Tools used during refueling outages, are they just stored for the next outage or are they deconned and put back into use in the RCA? If stored, how are the tools and equipment stored? Mix of both. Tools and equipment that are stored between outages are either bagged and labled or stored in sealed tool boxes and taken to the Radioactive Material storage facility. 5. How are safety harnesses (i.e., fall protection) controlled? Does the plant designate specific harnesses to be used in "contaminated" areas and different harnesses for "clean" areas? yes. What are the contamination limits (fixed and loose as applicable) for harnesses used in clean and contaminated areas? 6. What process is used for tool decon? Hand decon, Ultra-sonic sink, plas-blast or grit blast unit, or pressure washers? All of the mentioned. 7. Are Advanced Radworkers (ARWs) allowed to survey and release tools and equipment, or only RP Technicians? Only HP Technicians 7. Contaminated Calibrated tools - how are they stored? Stored in the Rad Waste building tool crib. Is there a "hot" calibration lab in the RCA? Yes, for some equipment i.e CAM's Low volume air samplers, mostly HP equipment. Does the plant conditionally release "fixed" contaminated calibrated tools from the RCA to be re-calibrated in the protected area? No conditional release. We send the equipment to an onsite facility once a week. Temporary RCA is established during calibration and HP Technicians provide coverage.
