ML20151Y078
| ML20151Y078 | |
| Person / Time | |
|---|---|
| Issue date: | 10/14/1977 |
| From: | Henderson J, Moseley N, Reinmuth G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| PNO-77-184, NUDOCS 9809180092 | |
| Download: ML20151Y078 (1) | |
Text
&h Q4 (,y W h))&y PRELIMINARY NOTIFICATION October 14, 19/7 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-77-184 ;
This areliminary notificaticn constitutes EARLY notice of an event of POSSI 3LE safety or public interest sionificance. The information presented is as initially received without verification or evaluation and is basically all that is known by IE staff-on this date.
Facility: BWR Generic
Subject:
GE RELIEF VALVE CONTROL SYSTEM ANALYSIS By letter dated October 11,1977 General Electric Company reported under 10 CFR 21 that continuing analysis of system transients had disclosed i
. that reactor coolant system pressure transients under some conditions .
! differed from those previously analyzed. Relief valve actuation in i j response to these transients increases 1oads on the containment sup- !
pression pool structure. NRR now has this subject under review. l GE states that the degree of impact of this situation will vary from l'
plant to plant. At this time it appears that some plants may not be appreciably affected, but GE is committed to specific analyses for all GE BWRs in operation or under construction.
Contact:
JBHenderson, IE x27551 GWReinmuth, IE x?.2551,,NCMoseley, X,284,84 j Distribution:
Chairman Hendrie Transmitted H St W [ -
Commissioner Bradford h
7 Commissioner Kennedy S. J. Chilk, SE0Y C. C. Kammerer, CA Commissioner Gilinsky (ForDistribution) 6 Transmitted: NNBB9/97 P Bldg 9/ V I E. Volgenau, IE L. V. Gossick, EDO E. G. Case, NRR Region E ' W S. H. Hanauer, EDO *
.2 J. J. Fouchard, PA SS Bldg V.' N (MAIL) - -
W. G. Mcdonald, MIPC C. V. Smith, NMSS R. J. McTiernan, 01A
+
R. G. Ryan, OSP R. Minogue, SD H. K..Shapar, ELD i
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