| 摘要 |
<p>An oscillation power range monitor has: an averaging section that assigns a plurality of LPRM readings input filtered to remove noise thereof from local power range monitors to calculate cell average value of the LPRM readings assigned to each cell; a time average processing section that calculates a cell time average value from the average value of each cell; a normalized cell value computing section that computes the normalized cell value for each cell from the cell time average value and the cell average value; a trip determining section that receives the normalized cell value, monitors oscillations of each cell output and outputs a scram trip when the normalized cell value exceeds a predetermined value; and an abnormality determining section that assigns a plurality of LPRM readings input and determines abnormality of each LPRM reading assigned to each cell based on the oscillations of the LPRM reading.</p> |
