NRC-91-0083, Provides Summary Rept of Second Individual Plant Exam Milestone,Per & in Ref to Generic Ltr 88-20 Re Individual Plant Exams for Severe Accident Vulnerabilities
| ML20082B689 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 07/09/1991 |
| From: | Orser W DETROIT EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| CON-NRC-91-0083, CON-NRC-91-83 GL-88-20, NUDOCS 9107160286 | |
| Download: ML20082B689 (2) | |
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own w opersuons July 9. 1991 NRC-91-0083 U. S. Nuclear Regulatory C(r mission Attn: Document Control Deck Washington, D.C. 20555
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References:
- 2) UPC Generic Let ter 80-20. " Individual Plant Exatninationn for Sever e Accident Vulnerabilities."
dated November 23, 1988, and Supplement 1. datei August 29, 1989,
- 3) Detroit Edison Letter t o liRC, "Ferrai 2 Individual Plant Examination Pr ogr am for Severe Accident Vulne rabilit ies. " NRC 0213. dat ed October 25, 1989.
b) NRC Let ter to Dutroit Edison "Revies vf 60-Day Response t o Generic Let t er 88-20. Individual Plant Examitmtions (IFE) (TAC No. 74410)." dat ul January 18, 1990
- 5) Detroit Edison let ters to NRC. " Summary Progress Report of First IPE Milest one. NRC-91-0013. dat ed Janua ry 29, 1991.
Subject:
Etamary Progress Report of Second IPE Milestone By Reference 3. Detroit Edison provided its responce to NRC Generic Letter 88-20 (Reference 2). This response was found acceptable by the NRC in Reference 4 In that response Detroit Edison canmitted to provide brief stomary progress reporto on cornpletion of each of three IPE milestcnes. The first progress report was submitted on Janua ry 29. - 1991 (Reference 5). This letter la submitted to provide the stamary report of the second IPE milest one.
The activity required for the recond milestone regarding the modeling of internal floodit.g within the Level 1 PRA has been completed. This activity resulted in the identification of new initiating events and event tree rule modifications to prcduce new core dar' age sequences due to internal flooding as would be expected.
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USNRC July 9, 1992 URC-91-0083 Page 2 To date, there have imen no slusificant findings to report. The focus of r emaining IPE ef fort s will be t o cornplete the containtoent analysis, to exercise and acrutinize the model in the development of insight s, and to cornpile the final IPE report and t,upporting documentation.
If you have any quertionc, plentie contact Mr. Girija S. Shukla at (313) $06-4270.
Since rely,
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