Fermi (BWR), refuel floor, CAMs - AMS4's w/ radial head, AMS4 w/ noble gas head, AMS3, tritium samples with bubbler. Containment (dry well) I wish there was room to put CAMs inside! (dose rate variances make AMS4 poor choice) AMS3 used at dry well equipment hatches, AMS4's w/ radial head used for work areas outside the dry well, have used AMS3 with tygon has been used where CAM is needed in high dose rate areas. Would be nice if Thermo developed a shielded in-line head for AMS4 (similar to AMS3 detector assembly) and a sample head for iodine cartridge would have also be nice to have.
Benjy Bertossi Fermi2 - RP Supervisor 734-586-4935 [email protected] From: "Michael C Wynn (Generation - 4)" <[email protected]> To: "[email protected]" <[email protected]>, "'[email protected]'" <[email protected]> Date: 11/06/2014 05:04 PM Subject: Powernet: CTMT Air Activity Monitoring Processes Sent by: [email protected] Millstone currently uses AMS-4 as Continuous Air Monitoring (CMS) to monitor air activity in our Containment building (CTMT). CAMs are typically placed between the reactor cavity and the equipment hatch. Additional CAMS are mounted on our HEPA 2000 units used to support high risk S/G work activities. During fuel movement activities we periodically collect tritium and noble gas samples using a lapel air bubbler and a 1-liter Marinelli air displacement method, respectively. Millstone is looking to improve our collection processes and would like to know what other stations are doing in the following areas: 1) Tritium and noble gas detection processes during reactor cavity and spent fuel pool (SFP) work activities. a. What technology/collection technique is being used? b. How many tritium and/or noble gas instruments are used to monitor the Reactor Cavity or SFP? 2) CAM technologies used within containment. a. What technology/collection technique is being used? b. How many CAMs are in CTMT? c. How many CAMs monitor the Reactor Cavity? d. Where are your CAMs typically placed? Thank you all in advance and appreciate your help! Michael C. Wynn Supervisor Radiological Analysis Dominion Nuclear Connecticut Millstone Power Station Rte 156, Rope Ferry Road Waterford, CT 06385 Office: (860) 447-1791 Ext. 4815 Tieline: 8-759-4815 Email: [email protected] CONFIDENTIALITY NOTICE: This electronic message contains information which may be legally confidential and or privileged and does not in any case represent a firm ENERGY COMMODITY bid or offer relating thereto which binds the sender without an additional express written confirmation to that effect. The information is intended solely for the individual or entity named above and access by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution, or use of the contents of this information is prohibited and may be unlawful. If you have received this electronic transmission in error, please reply immediately to the sender that you have received the message in error, and delete it. Thank you.
