Quick and Reliable Estimation of Power Distribution in a PHWR by ANN

Knowledge of the distribution of power in all the channels of a Pressurised Heavy Water Reactor (PHWRj as a result of a perturbation caused by one or more of the regulating devices is very important from the operation and maintenance point of view of the reactor. Theoretical design codes available for this purpose take several minutes to calculate the channel power distribution on modern PCs. Artificial Neural networks (ANNs) have been employed in predicting channel power distribution of Indian P HW Rs for any given configuration of regulating devices of the reactor. ANNs produce the result muchfaster and with good accuracy. This paper describes the methodology of ANN, its reliability, the validation range, and scope for its possible on-line use in the actual reactor