PRECON program complex. Description of application. Instructions for programmers

The PRECON program complex realizing a series of improvements for the ARAMAKO-CI standard system for preparation of 26 group constants, used for computation of nuclear reactors and radiation shields, is described. Calculation of the resonance self-shielding of nuclide cross sections being part of a physical zone may be carried out for spectrum of an infinite medium with any specified composition. Possibilities for a more correct account of boundary resonance effects and those of neutron leakage from the core in the B2 approximation at the stage of constant preparation are introduced. The description of application and instructions for programmers with a brief delivery of constant preparation algorithm are presented. An example of test job formulation is presented