BWR Scram Discharge System (Generic Letter 81-09)

                                UNITED STATES
                        NUCLEAR REGULATORY COMMISSION
                           WASHINGTON, D.C. 20555

                              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