Duke Energy is similar to Diablo Canyon. We would re-evaluate for any major component replacement/modification that would impact the neutron spectrum or for a change in dosimetry type. Generally, our neutron exposure in containment is minimal compared to neutron exposure during dry cask storage campaigns and work in/around ISFSIs (determined from RWP data and TLD results). Therefore, these are the neutrons we are most concerned with. All 3 of our stations’ ISFSIs have been re-evaluated within the last 5 years, but we will likely expand the scope to other areas due to ANI Bulletin 11-02.
Chris Courtenay Engineer, Duke Energy 980-875-5005 "To the optimist, the glass is half full. To the pessimist, the glass is half empty. To the engineer, the glass is twice as big as it needs to be." From: [email protected] [mailto:[email protected]] On Behalf Of Sewell, Linda Sent: Monday, March 25, 2013 11:30 AM To: '[email protected]' Subject: Powernet: RE: Quick Neutron Spectrum Re-Assessment Question Hi All, Diablo Canyon recently conducted a full neutron spectrum re-assessment as a result of our reactor head replacements and the associated changes in the neutron shield package. We have not done a power uprate. However, our design change process has that type of contingency in the evaluation process. Linda Linda M. Sewell, CHP Principal Health Physicist Pacific Gas & Electric Company Diablo Canyon Power Plant MS 119/1/117 PO Box 56 Avila Beach, CA 93424 P: 805.545.4315 | F: 805.545.2618| [email protected]<mailto:[email protected]> From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of Michael C Wynn Sent: Monday, March 25, 2013 3:53 AM To: [email protected]<mailto:[email protected]> Subject: Powernet: Quick Neutron Spectrum Re-Assessment Question Millstone Power Station has a quick question regarding neutron spectrum re-assessments. 1) Has your station conducted a full neutron spectrum re-assessment as a result of any power up rates? 2) And a brief explanation on your decision. Thank you in advance for your responses! Michael C. Wynn Supervisor Radiological Analysis Millstone Power Station Bldg. 437/2 Rope Ferry Road Waterford, CT 06370 Office: (860) 447-1791 Ext. 4815 Fax: (860) 444-4241 http://www.dom.com/ 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. ________________________________ PG&E is committed to protecting our customers' privacy. To learn more, please visit http://www.pge.com/about/company/privacy/customer/ ________________________________
