METHOD FOR PREDICTION OF CORROSION RATE OF HEAT TRANSFER TUBE BY USE OF EDDY CURRENT TEST METHOD

• Main Authors: HUR DO-HAENG, CHOI MYUNG-SIK, LEE DEOK-HYUN, SHIM HEE SANG
• Format: Patent
• Language: English; Japanese
• Published: 21.04.2016
• Subjects: BLASTING; HEATING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; LIGHTING; MEASURING; MECHANICAL ENGINEERING; METHODS OF STEAM GENERATION; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS; STEAM BOILERS; STEAM GENERATION; TESTING; WEAPONS

PROBLEM TO BE SOLVED: To provide a method of predicting a corrosion rate of a heat transfer tube using an eddy current test method.SOLUTION: A method of predicting a corrosion rate of a heat transfer tube using an eddy current test method comprises: a process (process 1) of performing an eddy current MRPC probe inspection of a heat transfer material; a process (process 2) of evaluating a MRPC probe inspection signal generated in the process 1; and a process (process 3) of predicting a corrosion rate of the heat transfer tube material from a noise value in the MRPC inspection signal of the heat transfer tube evaluated in the process 2. When the method of predicting the corrosion rate of the heat transfer tube according to the present invention is used, criteria on the corrosion rate of the heat transfer tube can be established as requirements for a corrosion rate of the heat transfer tube in a primary system condition through an eddy current MRPC noise inspection of the heat transfer material, so that there is an effect that a heat transfer tube material having a low corrosion rate can be selected in a material selection process.SELECTED DRAWING: Figure 6 【課題】渦電流検査法を用いた伝熱管腐食量予測方法を提供する。【解決手段】渦電流検査法を用いた伝熱管の腐食量予測方法は、伝熱管材料の渦電流ＭＲＰＣプローブ検査を行なう工程（工程１）、工程１で生成されたＭＲＰＣプローブ検査信号を評価する工程（工程２）、および工程２で評価された伝熱管のＭＲＰＣ検査信号のノイズ値から伝熱管材料の腐食量を予測する工程（工程３）を含む。本発明の伝熱管腐食量予測方法を用いると、伝熱管材料の渦電流ＭＲＰＣノイズ検査を通じて、１次系統条件での伝熱管の腐食量に関する基準を要件とすることができ、腐食量を予測することができるので、材料選定工程で腐食量が少ない伝熱管材料を選定することができるという効果がある。【選択図】図６