SURFACE CONTAMINATION DENSITY DISTRIBUTION ARITHMETIC UNIT, METHOD, AND PROGRAM

• Main Authors: TAKAKURA KEI, KUME NAOTO, IKEDA TAKAHIRO, UCHINO KEIICHI
• Format: Patent
• Language: English; Japanese
• Published: 22.10.2020
• Subjects: MEASUREMENT OF NUCLEAR OR X-RADIATION; MEASURING; PHYSICS; TESTING

To provide an arithmetic technology that can check the validity of surface contamination density distribution calculated based on a measured space dose rate.SOLUTION: A surface contamination density distribution arithmetic unit 10 holds first space dose rate distribution data D1 and first structure data D2 in a target area, holds an arithmetic expression Y that is created through machine learning of the relationship between second space dose rate distribution data S1, second structure data S2, and second surface contamination density distribution data S3 in a model area 35, inputs the first space dose rate distribution data D1 and the first structure data D2 into the arithmetic expression Y and outputs the first surface contamination density distribution data D3 in the target area, gives an error component to each of input values constituting the first space dose rate distribution data D1, and detects whether or not a parameter of the arithmetic expression Y matches based on pieces of first surface contamination density distribution data D3, D3' that are output before and after the error components are given to the input values.SELECTED DRAWING: Figure 1 【課題】計測した空間線量率に基づいて演算した表面汚染密度分布の妥当性を確認することができる演算技術を提供する。【解決手段】表面汚染密度分布演算装置１０は、対象エリアにおける第１空間線量率分布データＤ１及び第１構造物データＤ２を保持し、モデルエリア３５における第２空間線量率分布データＳ１、第２構造物データＳ２及び第２表面汚染密度分布データＳ３の関係を機械学習して作成した演算式Ｙを保持し、この演算式Ｙに第１空間線量率分布データＤ１及び第１構造物データＤ２を入力し対象エリアの第１表面汚染密度分布データＤ３を出力し、第１空間線量率分布データＤ１を構成する入力値の各々に誤差成分を付与し、入力値に誤差成分が付与される前と後に出力された第１表面汚染密度分布データＤ３，Ｄ３´に基づいて演算式Ｙのパラメータの一致／不一致を検出する。【選択図】 図１