At Palo Verde, we isolate filters, let them decay in place until pulling them won't generate >1 DAC airborne or alarm the plant vent, open the system, pull the filter up into a cask, use an installed monorail system to move the cask to the radwaste building, and grab a watman smear from the open bottom of the cask once the filter is in the radwaste building.
Heather Jackson, CHP, RRPT| Sr. Health Physicist H623-393-6076 | [email protected]|H623-393-1853 | PVNGS Mail Station 7397 From: Cady, Jeffrey James:(GenCo-Nuc) [mailto:[email protected]] Sent: Friday, October 07, 2016 4:19 PM To: [email protected] Cc: Gagnon, Michael:(GenCo-Nuc) Subject: [powernet] FW: Filter sampling method question ____________________________________________________ USE CAUTION - EXTERNAL SENDER:([email protected]<mailto:[email protected]>) Do not click on links or open attachments that are not expected. For questions or concerns, please email the APS Cyber Defense Center team at [email protected]<mailto:[email protected]> or contact the APS Helpdesk. ____________________________________________________ From: Gagnon, Michael:(GenCo-Nuc) Sent: Friday, October 07, 2016 6:18 PM To: Cady, Jeffrey James:(GenCo-Nuc) Subject: Filter sampling method question We are looking to learn how others sample filters for 10CFR Part 61 analysis. In particular, we have filters with a heavier gauge steel screen that our current filter punch will not penetrate. Also, some of these filters are stored underwater in the Spent fuel Pool. These are inside loading filters (i.e. the water enters the center and exits the outer surface). What experience do you have with alternate sampling methods, we have cut filters that have not been in the pool of this type in the past, but this evolution has risks associated with it. We have tried smears with limited success (difficulty getting enough activity on the smear) and smear rinsing off as it is brought up through the pool. Michael Gagnon, CHP Braidwood Nuclear Station Ph (815)417-2733 Fax (815)417-2410 Email: [email protected]<mailto:[email protected]> This Email message and any attachment may contain information that is proprietary, legally privileged, confidential and/or subject to copyright belonging to Exelon Corporation or its affiliates ("Exelon"). This Email is intended solely for the use of the person(s) to which it is addressed. If you are not an intended recipient, or the employee or agent responsible for delivery of this Email to the intended recipient(s), you are hereby notified that any dissemination, distribution or copying of this Email is strictly prohibited. If you have received this message in error, please immediately notify the sender and permanently delete this Email and any copies. Exelon policies expressly prohibit employees from making defamatory or offensive statements and infringing any copyright or any other legal right by Email communication. Exelon will not accept any liability in respect of such communications. -EXCIP --- 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.
