Method of reducing errors when calculating the shape annealing function (SAF) of an ex-core detector of a nuclear power plant

• Main Author: Kim, Hyeong Heon
• Format: Patent
• Language: English; French; German
• Published: 05.04.2017
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR POWER PLANT; PHYSICS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

A method of reducing errors when calculating a shape annealing function (SAF) of an ex-core detector (70) of a nuclear power plant is provided. The method comprises 3-dimensionally modeling elements of the nuclear power plant comprising a nuclear reactor core (10), an ex-core detector (70) disposed in a nuclear reactor cavity (50), and nuclear reactor structures (20, 30, 40, 60) arranged between the nuclear reactor core (10) and the ex-core detector (70); predicting an arrival position for emitted neutrons, by using a Monte Carlo method when a neutron source arranged at the ex-core detector (70) and neutrons emitted towards the nuclear reactor core (10), the predicted arrival position indicating where the emitted neutron will arrive at the nuclear reactor core (10); and producing an SAF based on a correlation between the neutron source arranged at the ex-core detector (70) and the predicted arrival position of the neutrons.