This standard identifies and describes the specifications fordeveloping, preparing, and documenting nuclear data sets to be usedin reactor design calculations. The specifications include ~a!criteria for acceptance of evaluated nuclear data sets; ~b!criteria for processing evaluated data and preparation of processedcontinuous data and averaged data sets; and ~c! identification ofspecific evaluated, processed continuous, and averaged data setsthat meet these criteria for specific reactor types.
Nuclear data sets shall consist of basic microscopic nuclearphysics data that include but are not limited to the importantneutroninduced reactions. The data set, in the processed form, willbe primarily utilized as input to fission reactor core designcalculations but may have applications to other fields, such asshielding, dosimetry, or fusion studies. The specific types of datasets considered to fall within the scope of this standard are shownin Figure 1 and defined more precisely in Section 2, "Definitions."As indicated in Figure 1, the scope of this standard does notpertain to experimental techniques for the measurement of nucleardata or to the development of nuclear model theory. The scope doesnot apply to a few-group collapsed data set, which isrepresentative of a particular application except for a requirementfor the documentation of collapsed data sets when such data setsare prepared as part of the testing of the nuclear data setscovered by this standard. The distinguished features of data setsconsidered to fall within the scope of this standard are that theycan be represented as being applicable to a wide range of reactorcompositions, geometries, and spectra.