ML18038B504
| ML18038B504 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry, Sequoyah  |
| Issue date: | 03/18/1987 |
| From: | White S TENNESSEE VALLEY AUTHORITY |
| To: | Ebneter S NRC |
| Shared Package | |
| ML18038B503 | List: |
| References | |
| RTR-NUREG-1150 NUDOCS 9511080142 | |
| Download: ML18038B504 (2) | |
Text
AOQ SPQ~ l8 OQ4 6N 3B~ cookout Place N)R
$ 8 1987 Nr; S.
D. Ebnotor
- Director, TVA Projects Division IJ';S. Nuclear Regulatory Commission Washington, D.C.
20555
Dear Nr. Ebneter:
SEQUOYAH NUCLEAR PLANT - INDIVIDUALPLANT EVALUATION (IPE)
Enclosed aro the two requested copies of the IPE performed for TVA by Westinghouse.
This document is specifically directed at demonstrating, that Sequoyah is not an outlier plant in terms of core damage frequency or early containment failure.
NUREG 1150 had indicated that Sequoyah was potentially subject to early containment failure and concomitant large releases of radiation.
As you meow, the NRC Office of Research put NUREG 1150 out as a
preliminary draft document for industry review and comment.
In the course of
'th'e review of NUREG 1150 and the preparation of tho Sequoyah
- ZPE, we found numerous modeling and configuration errors which we have had Westinghouse troat in the IPE.
In addition, we take issue with the calculational methodology used by Sandia in NUREG 1150 and have problems in the dominant iiccjdent modes chosen and the unjustified use of nonmechanistic common cause
'failures.
',We,would like for you to arrange a meeting with the NRC Office of Research for
',the-purpose of providing our detailed comments on NUREG 1150. If you have any
'.',.q'uestions, please contact C.
H. Fox of my staff.
Very truly yours, TENNFSSEE VALLEY AUTHORITY S. A. White Nanager of Nuclear Power gAF,:NLG
'Enclosure (retained in SAW's office, LP 6N 38A-C)
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