Synergy of automation and human action in fuel handling control system of 500 MWe PHWR

On-line refueling process is carried out in PHWRs on a routine basis. Each refueling cycle involves a large number of sequential operations to be executed safely and satisfactorily and hence is time consuming. Operations on the system are performed as per the detailed prescribed procedures. This necessitates introduction of automation of these operations; however the extent of automation has to be based on consideration of professional motivation and psychological well-being of the operator. This paper describes the nature of fuel handling operations and how man and machine work together in a complementary manner to achieve the objectives. (author). 2 refs., 7 figs., 1 tab