REACTOR CORE PAJWUERS CALCULATION BY TWO -GROUP THEORY

Reactor core for Nuclear Power Plant (1293 MWe) is of Pressurized Water
Reactor (PWR) type , with net electric output of 1200 MWe. The reactor is
designed by a German Company KWU (Krafts werk Union).
In order to introduce the methods of calculation of the reactor core
parameters to the students at the Institute of Nuclear Science and Technology,
and in addition to provide them with the basic knowledge of reactor technology
some of the M.Sc theses based on solely the core calculations.
In this article some of the parameters, such as, infinite multiplication
factor, effective multiplication factor, critical multiplication factor,
excess reactivity, boron concentration (as boric acid, burnable poison) to
compensate excess reactivity, and also thermal and fast flux distribution
in two dimensions (radial and axial) have been calculated by two group diffusion
theory.The results of the calculations agreed quite well with the results of
more advance methods•