NRC Generic Letter 81-09, BWR Scram Discharge System

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Janurary 23, 1981

ALL BWR LICENSEES

SUBJECT: BWR SCRAM DISCHARGE SYSTEM (GENERIC LETTER 81-09)

Reference:

(a) Order for Modification of License Concerning BWR Scram Discharge Systems dated January 9, 1981

This letter transmits the staff's Generic Safety Evaluation Report (SER)

Supplment 1 dated January 12, 1981 for your information. The supplement summarizes the results of our re-evaluation of the interim measures recommended in our SER on December 1, 1980. It provided the basis for continued operation of those plants with poor scram discharge colume to instrument volume drainage characteristics while an automatic air dump system is being installed, as required by reference (a).

Sincerely,

Darrell G. Eisenhut, Director Division of Licensing

Enclosure:

Generic Safety Evaluation Report (SER) Supplement 1

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