STP has dealt with this. Contact Leonard Earls
From: GOWDY, GREGORY M [mailto:[email protected]] Sent: Friday, October 28, 2011 11:01 AM To: [email protected] <[email protected]> Subject: Powernet: RE: Monitoring and Controlling Individuals with Radioactive Implants Seth, the only experience V. C. Summer has had with radioactive seed implant therapy treatments involved a contractor during a refueling outage. The contractor had I-125 seeds that had been implanted for therapy in the contractor the previous May (outage started in October). The contractor told Dosimetry that he had seeds implanted for therapeutic reasons, but he had been told that he would be able to work in the RCA despite them. We had not had any experience with radioactive seed implants, and so did not initially realize the long-term implications involved. After the contractor’s initial entry into the RCA, and his subsequent attempts to exit the RCA, the contractor was terminated by the contract company and replaced on the job by another contractor (the contract company’s quickest and easiest fix to our problem). We wrote an OE for the industry to tell of our experience with radioactive seed implant therapy treatments in radiation workers in OE-30151. Based our limited experience, I would imagine that having a worker with a radioactive seed implant would present significant problems for an HP department, in general, and the Dosimetry group, in particular. This would be particularly true if the worker with the therapeutic seeds implanted were an operator, mechanic, HP, deconner, or other job requiring multiple entries and work in the RCA. I am sure our HP department and Dosimetry group is interested in whatever information you gather in case Summer ever gets a case where a permanent worker or long-term contractor gets radioactive seed therapy treatments while working at the plant. Greg Greg Gowdy, PhD, CHP Sr. Staff Health Physicist V. C. Summer Nuclear Station Jenkinsville, SC 29065 (803)-345-4426 (work) (803)-873-1561 (cell) [cid:[email protected]] From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, October 27, 2011 7:34 PM To: [email protected] Cc: [email protected] Subject: Powernet: Monitoring and Controlling Individuals with Radioactive Implants Palo Verde request information on how other stations handle individuals undergoing radioactive seed implant therapy treatments. 1. From a work standpoint, do you place any restrictions on individuals with radioactive seed implants, do you remove an individual’s TLD (dose of record device) while the seeds are implanted or through their period of effectiveness? 1. If the individual has measurable external dose rates do you monitor them for potential impact on other station personnel? 1. Do you restrict their work area locations or proximity to other personnel? 1. Do you allow these individuals to enter the RCA and or the Radiological Restricted Area while the seeds are implanted? 1. Do you make any other exceptions or accommodations during their period of treatment? 1. If an individual has a hard to detect radionuclide such as Cs-131, do you monitor or control their activities? · For these isotopes, do you calculate a restriction or monitoring period based on effective half-life? ********************************************************************** Seth J. Kanter, CHP, RPT Sr. Health Physicist Palo Verde Nuclear Generating Station Mail Sta. 7397 5801 S. Wintersburg Rd. Tonopah, AZ 85354 Phone (623) 393-3130 Fax (623) 393-1853 Unless otherwise noted, all opinions are my own Liviu Librescu ********************************************************************** --- NOTICE --- This message is for the designated recipient only and may contain confidential, privileged or proprietary information. If you have received it in error, please notify the sender immediately and delete the original and any copy or printout. Unintended recipients are prohibited from making any other use of this e-mail. Although we have taken reasonable precautions to ensure no viruses are present in this e-mail, we accept no liability for any loss or damage arising from the use of this e-mail or attachments, or for any delay or errors or omissions in the contents which result from e-mail transmission.
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