Definition of "Key Maintenance Personnel," (Clarification of Generic Letter 82-12) (Generic Letter 83-14)

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

                                March 7, 1983

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

Gentlemen: 

SUBJECT:  DEFINITION OF "KEY MAINTENANCE PERSONNEL," (CLARIFICATION OF 
          GENERIC LETTER 82-12) (GENERIC LETTER 83-14) 

Generic Letter 82-12, Nuclear Power Plant Staff Working Hours, forwarded 
revised pages of NUREG-0737 which incorporate the Commission policy on 
working hours. Tn that revision, it is stated that the restrictions on 
working hours shall apply to "the plant staff who perform safety-related 
functions (e.g., senior reactor operators, reactor operators, auxiliary 
operators, health physicists, and key maintenance personnel)." 

Several questions have been received regarding clarification of the term 
"key maintenance personnel." Following is our definition of the term: 

     Key maintenance personnel are those personnel who are responsible for 
     the correct performance of maintenance, repair, modification or 
     calibration of safety-related structures, systems or components, and 
     who are personnel performing or immediately supervising the performance 
     of such activities. 

The term applies to all personnel who are actually performing such 
functions, regardless of whether or not they are assigned to the shift crew.

The term "safety-related" contained in the above paragraph is the same 
definition as applied to electrical equipment contained in 10 CFR 
50.49(b)(1). 


                                   Darrell G. Eisenhut, Director 
                                   Division of Licensing 


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