1. We have not had trouble with the clips breaking.
2. We have not implemented any type of double clip. In the few FME zones we would use tape. 3. We currently have not used a positive off-set/Bias in the two years we have used DMC 3000. Our only problem has been an accumulation of the 0.1 mR during the 6 month periods for workers that wear the DMC3000 the entry shift. 4. The improvements make the DMC 3000 much better. Besides the accumulated 0.1 mR DMC3000 (and mirion TLDs will report 0 mrem when the DMC3000 accumulated dose in six months might get up to 15 mR for some workers) .. the larger displays are nice but they due crack... the AA batteries are great compared to the DMC2000 batteries and retaining cap that would become loose(and the associated small wires attached to the battery ring. So far the transmitters for the DMC3000 have worker good with the DMC3000. We have not implemented the few neutron modules with the DMC3000 G3. We are waiting to implement sentinel 1.11 this summer. Michael Macho Radiation Protection Staff michael.ma...@luminant.com [cid:image003.jpg@01D2B95E.CDEF4480] SAFETY is first QUALITY SCHEDULE Luminant Power Comanche Peak Nuclear Power Plant 6322 North FM 56 or PO Box 1002 Mail Code 005A Glen Rose, TX 76043 (254)897-5698 /(254)897-8163 (817)559-1997 Cell From: Haniffy, Fred [mailto:fred.hani...@nexteraenergy.com] Sent: Tuesday, April 18, 2017 3:41 PM To: 'powernet@HPSpowernet.org' Subject: [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 lauren.alfo...@nexteraenergy.com<mailto:lauren.alfo...@nexteraenergy.com> 603-773-7319
