We do not use waste bag monitors. 5000 dpm (2.25 nCi) is the setpoint we use for our Small Article Monitors, but we do not use them to release bagged waste. Our SAMs are well shielded and relatively small so the count times are quite reasonable
Stephen J Holmes, CHP Rad Prot Tech Support Manager [email protected] 315-791-3577 (desk) 845-476-0796 (mobile) R.E. Ginna Nuclear Power Plant 1503 Lake Rd Ontario, NY 14519 -----Original Message----- From: SCHWARTZ Ephraim -NUCLEAR [mailto:[email protected]] Sent: Wednesday, February 22, 2017 8:49 AM To: [email protected] Subject: [EXTERNAL] [powernet] waste bag monitor alarm set points Ephraim Schwartz │ Manager │ Health Physics Department Ontario Power Generation Inc. │ 1549 Victoria Street East, Whitby, Ontario L1N 9E3 Internal: 402 – 3334 │ External: 905.430.2215 ext. 3334 │ Facsimile: 905.430.8583 Mobile: 416.407.4902 Make every mrem count From: DUHIG John -NUCLEAR <[email protected]> Sent: Wednesday, February 22, 2017 7:18 AM To: SCHWARTZ Ephraim -NUCLEAR Subject: Powernet question Hi Ephraim, Can you ask what other utilities are using for waste bag monitor alarm set points through use HPS powernet? INPO provides an example that is lower than our current alarm set points (2.25nCi vs 10nCi). Based on our MDA, we would be challenged to drop to 2.25nCi without significantly increasing count times. I’m interested how (if at all) others are achieving this detection limit. Thanks, John INPO 05-008 Rev2 Section 4.f: f. Unconditional release of clean trash from the radiologically controlled area Trash is monitored to ensure radioactive material will not be released off site. This monitoring may be done in a number of ways. For example, use a gamma-sensitive tool or box monitor capable of detecting contamination within the bag of trash at a level of 5,000 dpm. Each piece of trash may be surveyed with a handheld beta-sensitive frisker, rebagged, followed-by performance of an aggregate survey of the material. ----------------------------------------- THIS MESSAGE IS ONLY INTENDED FOR THE USE OF THE INTENDED RECIPIENT(S) AND MAY CONTAIN INFORMATION THAT IS PRIVILEGED, PROPRIETARY AND/OR CONFIDENTIAL. If you are not the intended recipient, you are hereby notified that any review, retransmission, dissemination, distribution, copying, conversion to hard copy or other use of this communication is strictly prohibited. If you are not the intended recipient and have received this message in error, please notify me by return e-mail and delete this message from your system. Ontario Power Generation Inc. 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
