REACTOR OUTPUT MEASURING EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide output measuring equipment which can measure output distribution of a reactor with high precision. SOLUTION: In order to correct a calculated value of output distribution found from a core physics model on the basis of an output signal of aγ-ray thermometer 4, a heat release value converter 7, aγ-ray flux converted 8 and a local average output converter 10 for proximate fuel assemblies 10 are provided in a reactor output measuring equipment. The heat release value converter 7 maintains individual expressions of a converting function which convert each output signal of theγ-ray thermometer 4 into a heat release value per a unit weight of the detecting part of theγ-ray thermometer 4. Theγ-ray flux converter 8 converts the heat release value per a unit weight of a detecting part into aγ-ray flux contributing to the heat release of theγ-ray thermometer 4. The local average output converter 10 for proximate fuel assemblies converts the value of theγ-ray flux into a local average output of fuel assemblies proximate to theγ-ray thermometer 4 by using relational expressions incorporated in the coverter 10 beforehand or the core physics model.