ML13308B417
| ML13308B417 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 04/11/1979 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Johari Moore SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| NUDOCS 7904260278 | |
| Download: ML13308B417 (1) | |
Text
pf R E 4.9 UNITED STATES NUCLEAR REGULATORY. COMMISSION REGION V SUITE 202, WALNUT CREEK PLAZA 1990 N. CALIFORNIA BOULEVARD WALNUT CREEK, CALIFORNIA 94596 April 11, 1979 Docket No. 50-206 Southern California Edison Company P. 0. Box 800 2244 Walnut Grove Avenue Rosemead, California 91770 Attention: Mr. J. B. Moore Vice President Gentlemen:
Enclosed is IE Bulletin No. 79-06, which requires action by you with regard to your pressurized water reactor facility(ies) with an operating license.
Based on our current understanding of the Three Mile Island accident sequence, and discussion with the designer of your pressurized water reactor, we have reason to believe that pressurizer level indication in your facility may not provide reliable information regarding level in the reactor coolant system under certain transient or accident condition.
You should immediately instruct your operating personnel accordingly.
In addition you should consider this possibility in responding to the enclosed Bulletin.
Should you have any questions regarding this Bulletin or the actions required by you, please contact this office.
Sincerely, R. H. Lngelken Director
Enclosure:
IE Bulletin No. 79-06 with Enclosures cc w/enclosure: