ML12041A306
| ML12041A306 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 11/23/2011 |
| From: | Orf T Plant Licensing Branch II |
| To: | Abbott L, Wasik C Florida Power & Light Co |
| References | |
| Download: ML12041A306 (2) | |
Text
1 NRR-PMDAPEm Resource From:
Orf, Tracy Sent:
Wednesday, November 23, 2011 9:48 AM To:
Chris Wasik (Chris.Wasik@fpl.com)
Cc:
Abbott, Liz
Subject:
St. Lucie 1 and 2 EPUs draft RAI - Instrumentation and Controls Branch (EICB)
- Chris, Please see below.
- Thanks, Trace Tracy J. Orf, Project Manager St. Lucie Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Phone: (301) 415-2788 UNITS 1 and 2 FPL letters L-2011-464, dated November 1, 2011 for St. Lucie Unit 1 and L-2011-465, dated November 2, 2011 for St. Lucie Unit 2 EPU provide the revised calculations for the Steam Generator Low Level Trip for reactor protection system. These calculations do not include or address the rationale for not including the normal radiation errors pertaining to the level transmitters. The normal radiation effect (Rn) and the accident radiation effect (Ra) are listed under Elements of Uncertainty in Table 4-1 of the calculations. However, the calculations do not specifically address Rn terms. The calculations should clearly explain the basis for not including any error due to normal radiation. Without an explicit rationale, the staff considers these as unstated and unverified assumptions. Provide the justification for not including normal radiation in the calculations for normal (non-accident) case calculations.
Hearing Identifier:
NRR_PMDA Email Number:
263 Mail Envelope Properties (Tracy.Orf@nrc.gov20111123094700)
Subject:
St. Lucie 1 and 2 EPUs draft RAI - Instrumentation and Controls Branch (EICB)
Sent Date:
11/23/2011 9:47:39 AM Received Date:
11/23/2011 9:47:00 AM From:
Orf, Tracy Created By:
Tracy.Orf@nrc.gov Recipients:
"Abbott, Liz" <Liz.Abbott@fpl.com>
Tracking Status: None "Chris Wasik (Chris.Wasik@fpl.com)" <Chris.Wasik@fpl.com>
Tracking Status: None Post Office:
Files Size Date & Time MESSAGE 1223 11/23/2011 9:47:00 AM Options Priority:
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