At Monticello, we survey the ISFSI on a semiannual basis. The frequency is based on prudence (10CFR20.1501). Our ISFSI Tech Specs do not require routine surveys.
________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, September 06, 2012 2:39 PM To: [email protected] Subject: Powernet: Quick Benchmark on ISFSI Survey Frequency Currently, Palo Verde surveys our Independent Spent Fuel Storage Installation (ISFSI) on a quarterly basis. However, we are considering reducing this frequency to semi-annual to coincide with the completion of each scheduled semi-annual dry cask storage campaign. The ISFSI is visually monitored each shift by Members of Security, each cask has a leak detection system with alarm, and a review of the past 12 years of surveys shows that radiological conditions only change with the addition of casks to the storage pad. Question: Palo Verde would like to know what survey periodicity, e.g., quarterly, semi-annually, etc., that you use for performing ISFSI surveys? What basis did you use to determine survey frequency, e.g., tied to a regulatory commitment (10 CFR Part 72), UFSAR, 05-008? Seth ********************************************************************** 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 Cell (602) 376-7131 or (602) 402-5764 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.
