United States Nuclear Regulatory Commission - Protecting People and the Environment

Availability of NUREG-0933 "A Prioritization of Generic Safety Issues" (Generic Letter No. 84-03)

                                UNITED STATES
                       NUCLEAR REGULATORY COMMISSION 
                          WASHINGTON. D. C. 20553 

                              January 13, 1984

TO ALL LICENSEES OF OPERATING REACTORS, APPLICANTS FOR OPERATING LICENSES, 
  AND HOLDERS OF CONSTRUCTION PERMITS 

Gentlemen: 

SUBJECT:  AVAILABILITY OF NUREG-0933 "A PRIORITIZATION OF GENERIC SAFETY 
          ISSUES" (Generic Letter 84-03) 

This letter is to inform you that NUREG-0933, "A Prioritization of Generic 
Safety Issues," will be published in January, 1984, and may be purchased by 
calling (301) 492-9530 or by writing to the NRC/GPO Sales Program, Division 
of Technical Information and Document Control, U.S. Nuclear Regulatory 
Commission, Washington, D.C. 20555, or purchased from the National Technical
Information Service, Department of Commerce, 5258 Port Royal Road, 
Springfield, VA 22161. This report presents the priority rankings for a 
large number of generic safety issues related to nuclear power plants. The 
purpose of these rankings is to assist in the timely and efficient 
allocation of NRC resources for the resolution of those safety issues that  
have a significant potential for reducing risk. The safety priority rankings 
of HIGH, MEDIUM, LOW, and DROP have been assigned on the basis of risk 
significance estimates, the ratio of risk to costs and other impacts 
estimated to result if resolutions of the safety issues were implemented, 
and the consideration of uncertainties and other quantitative or qualitative 
factors, as discussed in the Introduction of the report. To the extent 
practical, estimates are quantitative. 

The report does not contain any new requirements or guidance for licensees 
or applicants but does list and briefly describe, for the purpose of 
completeness, some of the safety issues that have been resolved and were 
previously issued as requirements or guidance. Although changes to nuclear 
power plant designs or operation are assumed, the sole purpose in 
prioritizing the issues is to estimate costs and other impacts that might 
result if such changes were implemented. 

It is suggested that you review the safety issues listed in the report that 
have been removed from further consideration by the NRC (i.e., those issues 
with LOW or DROP priority rankings) or are in the process of resolution 
(i.e., those issues nearly resolved or with a HIGH or MEDIUM priority 
ranking). The purpose of your review would be to identify those issues that 
may have particular significance for your nuclear power plants. The priority
rankings in the report are based on generic assessments, i.e., assessments 
of plants thought to be typical of a class of,plants. Thus, the safety 
significance of an issue might be greater or less) for a specific plant 




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because of features of the design or operation that are different from those
assumed in the generic assessments. Based on your review, you may decide 
that some actions may be appropriate pending resolution by the NRC. 

No reply to this letter is required, except in those instances where you may
decide that action related to some safety issue is needed and would requite 
a modification of your Technical Specifications, license, or application in 
accordance with Paragraphs 50.90 and 50.91 of 10 CFR Part 50. 


                              Darrell G. Eisenhut, Director 
                              Division of Licensing  
                              Office of Nuclear Reactor Regulation   
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