LIST OF TABLES 1. Example of Priority System for Selection of Fuel Charge Batches. 11 2. BCD Input Datasets for REBUS-3 J.4 3. REBUS-3 BCD Input Error Checking. .. , 4. CPU Execution Times for Sample Problem on the IBM 3033 48 5. Modules Invoked by Standard Path Driver STP027 50 6.

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The ETOE-2/MC 2 -2/SDX multigroup cross-section processing codes have been designed to provide a comprehensive neutron cross-section processing capability for a wide range of applications including critical experiment analysis and core design calculations. Fundamental nuclear data from ENDF/B provide the primary input to the code system and the output consists of a user-specified CCCC ISOTXS multigroup cross-section data file, Great flexibility has been provided to the user in specifying the rigor of the calculation so that a unified cross-section processing system with a single data base is available which may be used for both preliminary survey scoping studies and rigorous design calculations.The principal program blocks of the code system include: a library processor and format converter between ENDF/B data and the KC 2 -2/SDX library; an ultra-fine-group fundamental mode calculation (MC 2 -2) which provides a composition dependent spectrum calculation and broad-group collapsing capability; a rigorous hyper-fine-group spatially heterogeneous resolved resonance calculation (RABANL) to supplement the more approximate NR approximation used in the ultra-fine-group treatement; and an intermediate group space-dependent capability (SDX).

Contents of CI16.CCCC.MASTER Library 16 2. Contents of C116.CCCC.SYSLIB 18 3. Contents of C116.CCCC.SYSLIB (from C116.ARC.SYSLIB) 19 4. Utility Modules in C116.CCCC.MODLIB 21 5. Object Code Segments in C116.CCCC.SEGLIB 24 6.