United States Nuclear Regulatory Commission - Protecting People and the Environment

Generic Activity A-10 BWR Cracks (Generic Letter 80-50)



GL80050 

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

                               June 5, 1980 

ALL BWR LICENSEES 

Attached for your review and comment is the "For Comment" edition of NUREG-
0619, "BWR Feedwater Nozzle and Control Rod Drive Return Line Nozzle 
Cracking". The report provides the staff's resolution of the NRC's Generic 
Technical Activity A-10, which is an "Unresolved Safety Issue" pursuant to 
Section 210 of the Energy Reorganization Act of 1974. 

The generic study resulted from the inservice discovery of cracking in 
feedwater nozzles and control rod drive return line nozzles. 

NUREG-0619 describes the technical issues, the technical studies and 
analyses performed by the General Electric Company and the NRC staff, the 
staff's technical positions based on these studies, and the staff's plan for 
licensee and applicant implementation of the technical positions. 

Public comments are being solicited form interested organizations, groups, 
and individuals. These comments will be evaluated by the NRC staff prior to 
final implementation of this subject. All comments should be forwarded to 
Mr. Richard Snaider, Generic Issues Branch, Nuclear Regulatory Commission, 
Washington, D. C. 2055, by July 7, 1980. 

At the completion of the comment period, the staff will evaluate the 
comments received and, if needed, will issue a supplement or revision to 
NUREG-0619. The target for issuing the supplement or revisioni is late 
August 1980. 

Your comments should address the proposed implementation schedule as well as
the technical content. 

Because of the importance of resolving this issue, plants undergoing 
Systematic Evaluation Program (SEP) review will be required to implement 
changes in the same time frame as non-SEP plants. 

                                        Sincerely, 


                                        Darrell G. Eisenhut, Director 
                                        Division of Licensing 

Enclosure:
NUREG-0619

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