Pulsed Eddy Current for Rapid Scanning of Insulated Steel in CANDU® Reactors

用于快速扫描 CANDU® 反应器中绝缘钢的脉冲涡流

• 批准号: 531210-2018
• 负责人: Krause, Thomas
• 金额: $ 2.62万
• 依托单位: Royal Military College of Canada
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=698058
• 关键词: Pulsed; Eddy; Current; Rapid; Scanning

This project will focus on development of pulsed eddy current (PEC) inspection technology and development of analysis tools for variable multi-parameter conditions for both PEC and eddy current (EC) inspection data. Development will target rapid inspection of insulated steel pipe that makes up a large portion of balance of plant piping within CANDU® nuclear reactors and thick walled steel structures, including the calandria and shield tank assembly (CSTA), high pressure feed water heat exchanger and storage tanks. Pulsed eddy current (PEC) has demonstrated a capability to perform inspection of conducting ferromagnetic materials at large lift-offs. Development of PEC technology will be toward a rapid inspection capability for assessment of through-thickness general corrosion in steel pipe wall, without costly removal and replacement of insulation. This project will also investigate multi-parameter eddy current signal analysis, accounting for effects of permeability variations and resistivity on wall thickness assessment in PEC applications and for multi-variable parameters in EC steam generator (SG) inspection. Inspection and monitoring of pipe condition through insulation can be integrated with preventive maintenance programs, thereby enhancing pipe system management processes. Compensation for multi-parameter variations in PEC and EC signal analysis will enhance detection and flaw sizing capability, improving inspection reliability.

该项目将重点开发脉冲涡流 (PEC) 检测技术以及开发用于 PEC 和涡流 (EC) 检测数据的可变多参数条件的分析工具，开发目标是对构成绝缘钢管的快速检测。 CANDU® 核反应堆和厚壁钢结构内的大部分工厂管道，包括排管和屏蔽罐组件 (CSTA)、高压给水热交换器和脉冲涡流储罐。 (PEC) 已证明能够在大升程下对导电铁磁材料进行检查。PEC 技术的发展将致力于实现快速检查能力，以评估钢管壁的全厚度全面腐蚀，而无需进行昂贵的拆卸和更换。该项目还将研究多参数涡流信号分析，解释 PEC 应用中磁导率变化和电阻率对壁厚评估的影响以及 EC 蒸汽发生器 (SG) 检查和监测中的多变量参数。通过隔热层对管道状况进行的监测可以与预防性维护计划相结合，从而增强管道系统管理流程，对 PEC 和 EC 信号分析中的多参数变化进行补偿，从而增强检测和缺陷尺寸测量能力，从而提高检查可靠性。