1. Have you seen similar issue with the clips? And if so, how have you dealt with the issue? (Please send pictures if you can)
We've been using DMC3000 for close to two years and haven't seen clip failure to be a significant issue 2. Seabrook's practice is to double clip SRDs, using both a strap-clip and the integral SRD clip, to help avoid dropped SRD alarms. How do you have your workers clip on the DMC-3000? (Any pictures of your clipping method would be helpful) We use the standard clip. Typically clipped to lanyard or, if using PCs, placed in whirl-pack in PC pocket 3. Seabrook is applying a 5% (1.05) calibration off-set to the DMC-3000 (versus a 12% applied to the DMC-2000). What off set are you applying to the DMC-3000 to help match the DLR? 10% bias is standard for Exelon fleet 4. What has been your overall experience with DMC-3000? About as good as can be expected for a new device Stephen J Holmes, CHP Rad Prot Tech Support Manager [email protected]<mailto:[email protected]> 315-791-3577 (desk) 845-476-0796 (mobile) [cid:[email protected]] R.E. Ginna Nuclear Power Plant 1503 Lake Rd Ontario, NY 14519 From: Haniffy, Fred [mailto:[email protected]] Sent: Tuesday, April 18, 2017 4:41 PM To: '[email protected]' Subject: [EXTERNAL] [powernet] OE on use of DMC-3000 Seabrook Station just implemented the DMC-3000s and we ran into an issue with some clip breakage within the first week. We would be interested in the following information that could be provided by sites using DMC-3000s: 1. Have you seen similar issue with the clips? And if so, how have you dealt with the issue? (Please send pictures if you can) 2. Seabrook's practice is to double clip SRDs, using both a strap-clip and the integral SRD clip, to help avoid dropped SRD alarms. How do you have your workers clip on the DMC-3000? (Any pictures of your clipping method would be helpful) 3. Seabrook is applying a 5% (1.05) calibration off-set to the DMC-3000 (versus a 12% applied to the DMC-2000). What off set are you applying to the DMC-3000 to help match the DLR? 4. What has been your overall experience with DMC-3000? Any information at all would be helpful. You can respond directly to me at the contact information below. Thank you for your time, Lauren N.F. Alfonso RP Analyst Seabrook Station NextEra Energy [email protected]<mailto:[email protected]> 603-773-7319 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
