ML14084A049
| ML14084A049 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 03/25/2014 |
| From: | Ed Miller Plant Licensing Branch II |
| To: | Murphy G Duke Energy Carolinas |
| Miller E, NRR/DORL/2-1, 415-2481 | |
| References | |
| EA-12-049 | |
| Download: ML14084A049 (2) | |
Text
From:
Miller, Ed To:
"Murphy, George M (George.Murphy2@duke-energy.com)"
Subject:
Draft RAI for AFW suction swap-over setpoint Date:
Tuesday, March 25, 2014 7:54:00 AM Attachments:
- George, The NRC staffs draft RAI for the subject LAR is attached to this e-mail. The draft RAI is not an official NRC staff request and is being provided to you to facilitate a subsequent conference call to determine: 1) If the questions clearly convey the NRC staff information needs; 2) Whether the regulatory basis for the questions is understood; and 3) Whether the information is already available in existing, docketed, correspondence. After youve had a chance to review the draft information request, please contact me to schedule the conference call.
Also, please note that these are questions from the instrumentation & Control portion of the review. There may be additional questions from the Balance of Plant portion. Given the truncated review schedule, I wanted to pass questions along as I received them.
Thank you.
Ed Miller (301) 415-2481
DRAFT REQUEST FOR ADDITIONAL INFORMATION MCGUIRE NUCLEAR STATION, UNITS 1 AND 2 PROPOSED CHANGES TO TECHNICAL SPECIFICATION 3.3.2 IN SUPPORT OF COMPLIANCE WITH NRC ORDER EA-12-049 DOCKET NOS. 50-369 AND 50-370 By letter dated September 12, 2013, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML13262A500), Duke Energy Carolinas submitted a license amendment request (LAR) to amend the Technical Specifications (TS) 3.3.2, Engineered Safety Feature Actuation System (ESFAS) Instrumentation, FUNCTION 6.f, Auxiliary Feedwater Pump Suction Transfer on Suction Pressure - Low (c) for McGuire Nuclear Station, Units 1 and 2, in support of plant modifications required to achieve compliance with the NRC Order EA-12-049, Order Modifying Licenses with Regard to Requirements of Mitigation Strategies for Beyond-Design-Basis External Events, dated March 12, 2012. In order for the NRC staff to complete its review of the LAR, the following additional information is requested.
- 1. Provide calculations including the various tolerances used in calculating the total loop uncertainties (TLUs), reference accuracy, and drift indicating how they comply with the requirements specified in Section 2.0 of this request, especially indicating how all these tolerances comply with the 95/95 confidence level specified in RG 1.105.
- 2. Provide representative plant procedures to demonstrate how the plant procedures comply with the TSTF-493 footnotes.