Palo Verde provides the following response: 1) general area dose rates on the refuel machine during core off-load/on-load are typically 1-2 mrem/hr
2) Normally, we do not install shielding on the refuel machine (deck or handrail); however, we have had instances in the past where the activity of the water in the refuel pool has been elevated which resulted in much higher dose rates on the refuel bridge. In those instances we installed lead blankets on the deck. Since then, we have an approved temporary shield package in place if dose rates are elevated after flood up. ********************************************************************** Seth J. Kanter, CHP, RRPT 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 ********************************************************************** From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, August 11, 2011 7:44 PM To: [email protected] Subject: Powernet: Couple Quick Benchmark Question San Onofre would like to know: 1) What are the general area dose rates on your refuel machine during core off-load/on-load? 2) Do you install any shielding on your refuel machine (deck or handrail) ? If so, what type (lead/tungsten, blanket/sheet etc.)? Thank you, Roger Scott Sherman Technical Specialist Scientist Health Physics Planning Department San Onofre Nuclear Generating Station P.O. Box 128, San Clemente, CA 92672 949-368-6423 [email protected] ----------------------------------- Powernet - a service of the Health Physics Society Power Reactor Section Powernet archives at http://www.mail-archive.com/[email protected]/ Reply to: [email protected] If Questions, contact Mike Russell, CHP at [email protected] --- 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.
